taxonID	type	description	language	source
03B4126EE86BFFA6EEC8FDC5FEE2FAC8.taxon	type_taxon	(type species by monotypy: I. fuscus Perty, 1833).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE86BFFA6EEC8FDC5FEE2FAC8.taxon	type_taxon	Type species Idiops fuscus Perty, 1833	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE86BFFA6EEC8FDC5FEE2FAC8.taxon	synonymic_list	Composition Idiops includes 102 species, of which 24 occur in the Neotropical region, including the four new species herein described: I. fuscus Perty, 1833, the type species, I. argus Simon, 1889, I. bonapartei Hasselt, 1888, I. cambridgei Ausserer, 1875, I. camelus (Mello Leitão, 1937), I. carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017, I. clarus (Mello-Leitão, 1946), I. duocordibus sp. nov., I. germaini Simon, 1892, I. guri sp. nov., I. harti (Pocock, 1893), I. hirsutipedis Mello-Leitão, 1941, I. minguito Ferretti, 2017, I. mocambo sp. nov., I. nilopolensis Mello-Leitão, 1923, I. opifex (Simon, 1889), I. petiti (Guérin, 1838), I. piluso Ferretti, Nime & Mattoni, 2017, I. pirassununguensis Fukami & Lucas, 2005, I. sertania sp. nov., I. siolii (Bücherl, 1953), I. rastratus (O. Pickard-Cambridge, 1889), I. rohdei Karsch, 1886 and I. tolengo Ferretti, 2017.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE86BFFA6EEC8FDC5FEE2FAC8.taxon	distribution	Distribution South America, Africa, Syria, Israel, Yemen, India, Myanmar and Thailand. Here we present the updated distribution of the Neotropical species of the genus (Figs 3 – 4).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE86BFFA6EEC8FDC5FEE2FAC8.taxon	diagnosis	Diagnosis The species of Idiops differ from all other Idiopinae by having the coxae without spines and by the chelicerae with a row of large teeth along the retromargin and small teeth concentrated in the basal third of the promargin and arranged in a row or randomly (Fig. 5 A – B; except I. harti (Pocock, 1893 )). Idiops harti differs from all other species of the genus by having only one prolateral row of large teeth (Fig. 5 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE86BFFA6EEC8FDC5FEE2FAC8.taxon	description	Description Small to medium sized spiders, with Neotropical species with total length ranging between 5.4 mm and 19.1 mm. Brown color, with variation between yellowish brown and almost entirely black (Fig. 2 A – F). Anterior lateral eyes close to clypeal edge (Fig. 6 A). Chelicerae with a prolateral row of large teeth and a retrolateral row of smaller teeth (Fig. 6 B), retrolateral teeth occupying basal third of chelicerae, arranged in a row (Fig. 5 A) or randomly (Fig. 5 B), except I. harti, with retrolateral teeth absent (Fig. 5 C), and rastellum consisting of a distinct process with large spines (Fig. 6 C). Legs with three tarsal claws, paired claws with teeth and third claw smooth (Fig. 6 D). Adhesive scopula absent, pseudoscopula present in males (Fig. 6 D). Sternum with two anterior pairs of small marginal sigillae. Abdomen oval, without ornaments or sclerotic spots (Fig. 2 A – F). Four spinnerets; posterior lateral spinnerets trisegmented and with a domed apical segment, posterior median spinnerets with one short segment. Males with enlarged palpal tibia, with retrolateral depression bordered by robust spines (Fig. 6 E – F). Copulatory bulb presents an embolus with median curvature, subapical torsion, apical expansion, usually in flattened shape (embolar lamella) (Fig. 7 E – F) or pointed shape (distal embolar tooth) (Fig. 19 E) (with the exception of I. petiti; Fig. 26 E – F). Leg I with a double tibial apophysis, with apical branch wider than basal branch (Fig. 6 G) (with the exception of I. germaini; Fig. 18 H), with putative slit organ between the two branches (Fig. 6 H – I). Metatarsus I smooth (with the exception of I. duocordibus sp. nov., I. petiti and I. pirassununguensis, which have a subapical prolateral projection (Figs 17 I, 26 I, 27 I )). Idiops females have cuspules on labium and maxillae. In I. duocordibus sp. nov., I. opifex and I. rastratus, cuspules occupy entire ventral region of maxillae (Figs 17 K, 29 K). Tibia III presents dorsal depression in I. fuscus, I. camelus, I. pirassununguensis and I. rohdei. Spermathecae with sclerotized basal area, divided into two outward-sloping ducts, each one connected to rounded terminal receptacles (Fig. 7 L) (with the exception of I. duocordibus sp. nov., I. petiti and I. siolii; Figs 17 L, 26 L, 34 C) that have receptacles with lobular expansions.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE86BFFA6EEC8FDC5FEE2FAC8.taxon	biology_ecology	Natural history Spiders of the genus Idiops live in tubular silk-lined burrows, which are closed by a hinged lid (operculum), which functions as a trapdoor (Fig. 1 A – F, H – L). The burrows, which can be found on ravines (Fig. 1 G) and on the ground (Fig. 1 L), are dug with the help of the rastellum and first legs (Coyle et al. 1992). The opercula are usually camouflaged with mosses (Fig. 1 A – D), grains of sand and clay (Fig. 6 E – F), and small leaves and pieces of dry grass (Fig. 6 H – K) (Coyle et al. 1992; Dippenaar-Schoeman 2002). These burrows provide a suitable microclimate that protects the spiders from predators, parasites and microbial infections, and behave as effective expansions for ambushing prey (Dippenaar-Schoeman 2002; Pérez-Miles & Perafán 2017). Idiops spiders live in a variety of habitats, ranging from dry environments with scattered vegetation and harder soils to more humid environments with dense vegetation and softer soils (Dippenaar-Schoeman 2002; Gupta et al. 2013; RFF pers. obs.). Some species can occasionally be found in termite mounds or in soil deposited near the base of trees (Gupta et al. 2015) and inside tree bark and rotten trunks (Pickard-Cambridge 1889: fig. 5; pers. obs.). Finally, some species can be found in degraded environments, often close to human dwelling and agricultural environments (Mirza & Sanap 2012; Gupta et al. 2013). In Brazil, specimens of Idiops were found in urban vegetation fragments, located even in large cities, such as São Paulo (I. camelus), Rio de Janeiro (I. germaini) and Brasília (I. pirassununguensis) (RFF pers. obs.). Females and juveniles spend most of their lives in the burrows, leaving only during events of capturing prey and disposing of undigested parts. Males, after reaching adulthood, leave their burrows and wander in search for females to copulate (Dippenaar-Schoeman 2002; Pérez-Miles & Perafán 2017). Although less common, it is possible to find males living in individual burrows (Siliwal et al. 2020; RFF pers. obs.). It is common to find several nearby burrows, with spiders often belonging to the same population (Dippenaar-Schoeman 2002), with records reaching the density of 20 individuals per m ² for I. bombayensis Siliwal, Molur & Biswas, 2005 (Mirza & Sanap 2012). At night, the spiders position themselves near the opening, with the trapdoor slightly ajar and wait for the prey that, upon approaching and being noticed, is captured and taken inside (Coyle et al. 1992). If disturbed, the spider closes the operculum firmly, holding the trapdoor with its anterior legs, and as a last resort, goes to the bottom of the burrow (Dippenaar-Schoeman 2002; Pérez-Miles & Perafán 2017; pers. obs.). In case there is an egg sac inside the burrow, the female positions itself on top of it to better protect its contents. The egg sac is usually oval and can contain up to 250 eggs held together by thick silk lining (as in I. joida Gupta, Das & Siliwal, 2013) (Gupta et al. 2013). In cases of adverse environmental events, these spiders can abandon their burrows, migrate to apparently more stable environments and build new burrows (Dippenaar-Schoeman 2002; Pérez-Miles & Perafán 2017).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE867FFA1EECEFEE2FB7DFB03.taxon	description	Figs 2 A – B, 4 C, 6 A, 7 – 8	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE867FFA1EECEFEE2FB7DFB03.taxon	diagnosis	Diagnosis Males of I. fuscus (Figs 7 A – I) differ from other Neotropical species of the genus, except I. clarus and I. pirassununguensis, by having palpal tibia with a prominent projection at the base of the retrolateral depression (Fig. 7 C). Differs from I. clarus and I. pirassununguensis by the strong curvature of the median portion of the embolus in dorsal view (also present in I. nilopolensis). Differs from I. nilopolensis by the distal portion of the embolus having a pronounced embolar lamella with differentiated dorsal and ventral edges (also present in I. rastratus) (Figs 7 D – F, 8 E – F). The females differ from other Neotropical species by the aspect of the spermathecae, composed of two ducts slightly curved outward, with a soft and nonsclerotized basal portion and a median and apical portion strongly sclerotized and by the receptacula with a much larger diameter than the duct width (Fig. 7 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE867FFA1EECEFEE2FB7DFB03.taxon	materials_examined	Type material Holotype BRAZIL – Piauí • MNHN. Should be in the MNHN, lost. Neotype (here designated) BRAZIL – Piauí • ♂; Bom Jesus, Reserva Natural Serra do Teimoso; 8 ° 52 ′ 52.6 ″ S, 44 ° 58 ′ 12 ″ W; 12 Jul. – 2 Aug. 2000; F. Curcioi and M. Pixo leg.; IBSP 11887. Remark: Despite an intensive search, the type specimen of Idiops fuscus was not found in the MNHN, being considered lost. In accordance with the criteria of the ICZN Code (ICZN 1999), a neotype is designated here, because the type is lost and the original description is inadequate to stabilize the species. This neotype was based on a specimen collected near the type locality, in the state of Piauí, Brazil. Other material examined BRAZIL – Maranhão • 1 ♂; Carolina, Campus Hotel Rilton; 7 ° 19 ′ 58 ″ S, 47 ° 28 ′ 8 ″ W; 10 Dec. 2005; UFMT. – Piauí • 1 ♀; São Raimundo Nonato; 9 ° 0 ′ 54 ″ S, 42 ° 41 ′ 56 ″ W; 6 Dec. 1994; R. Bertani and D. Pinz leg.; IBSP 9574 • 3 ♂♂ (SEM); União, Campus OMVAPI Ltda; 4 ° 35 ′ 9 ″ S, 42 ° 51 ′ 50 ″ W; 2006; J. Queiroz et al. leg.; CHNUFPI 0036 • 2 ♂♂; same collection data as for preceding; CHNUFPI 0030, CHNUFPI 0038 • 1 ♂; Guaribas, Parque Nacional da Serra das Confusões; 9 ° 12 ′ 55.5 ″ S, 43 ° 29 ′. 1 ″ W; 14 Dec. 2010; F. S. Silva leg.; CHNUFPI 4033 • 1 ♂; Guaribas, Parque Nacional da Serra das Confusões; 9 ° 13 ′ 12.3 ″ S, 43 ° 29 ′ 26.7 ″ W; 9 – 15 Dec. 2010; L. S. Carvalho leg.; CHNUFPI 4034 • 1 ♂; Guaribas, Parque Nacional da Serra das Confusões; 9 ° 13 ′ 32.4 ″ S, 43 ° 27 ′ 46.9 ″ W; 10 Dec. 2010; F. S. Silva leg.; CHNUFPI 4032. – Ceará • 1 ♂; Crato, Parque Estadual Sítio do Fundão; 7 ° 13 ′ 3 ″ S, 39 ° 20 ′ 21 ″ W; May 2016; IBSP 218297. – Pernambuco • 2 ♂♂; Caruaru, Brejo; 8 ° 16 ′ 58 ″ S, 35 ° 58 ′ 33 ″ W; Nov. 2010; H. Amorin leg.; IBSP 243978, IBSP 243980 • 1 ♂; Serra Talhada; 7 ° 59 ′ 9 ″ S, 38 ° 17 ′ 45 ″ W; Nov. 2010; H. Amorin leg.; IBSP 243979. – Bahia • 1 ♀; Santa Inês, BR 420; 13 ° 15 ′ 48.7 ″ S, 39 ° 47 ′ 2.8 ″ W; 18 Jun. 2018; P. H. Martins and E. A. Araújo leg.; UFMG 24028 • 1 ♀; Brumado, Magnesita; 14 ° 10 ′ 51.5 ″ S, 41 ° 42 ′ 0.7 ″ W; 24 Feb. 2017; P. Martins leg.; UFMG 24029. – Mato Grosso • 1 ♂; Chapada dos Guimarães; 15 ° 27 ′ 39 ″ S, 55 ° 45 ′ 0 ″ W; 23 Mar. 2001; C. Strussmann leg.; MCTP 12212. – Minas Gerais • 1 ♂; Itaobim; 16 º 31 ′ 58.6 ″ S, 41 º 30 ′ 37.5 ″ W; 25 Nov. 2011; I. L. F. Magalhães et al. leg.; UFMG 10098. – Mato Grosso do Sul • 4 ♂♂; Corumbá, Serra do Amolar; 17 ° 94 ′ 32 ″ S, 57 ° 55 ′ 47 ″ W; 8 – 12 May 2001; C. Strussmann leg.; MCTP 12193 • 1 ♀; Bonito; 21 ° 7 ′ 15 ″ S, 56 ° 28 ′ 55 ″ W; Oct. 2002; C. A. Rheims leg.; IBSP 225943 • 1 ♂; Bonito, Abismo Anhumas; 21 ° 08 ′ 60 ″ S, 56 ° 36 ′ 00 ″ W; Oct. 2002; C. A. Rheims leg.; IBSP 243976 • 2 ♂♂; same collection data as for preceding; IBSP 243974 • 3 ♂♂; same collection data as for preceding; IBSP 243975.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE867FFA1EECEFEE2FB7DFB03.taxon	description	Description Male (neotype IBSP 11887) HABITUS. See Fig. 7 A. MEASUREMENTS. TBL 11.2, CL 5.3, CW 5, LL 0.7, LW 1, SL 3, SW 2.7. COLOR. Brown carapace and legs, light brown sternum and coxae (Fig. 7 A – B), grayish brown abdomen. PROSOMA. Carapace and ocular arrangement as shown in Fig. 7 A. Eye distance AME-ALE 0.6. Eye diameters: AME 0.3, ALE 0.3, PME 0.2, PLE 0.3. Thoracic fovea procurved (Fig. 7 A). Labium and sternum without cuspules (Fig. 7 B). Basal segment of chelicerae with a prolateral row of 10 large teeth and a retrolateral row of 10 small teeth, grouped in basal half, rastellum with 10 – 12 spines, distal ones longer (Fig. 8 A – B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 7 G. Leg I with double tibial apophysis composed of a short, thickened basal branch with a small tapered spine and an apical branch composed of a base twice the size of the basal branch, a thickened apical spine followed by two smaller spines (Figs 7 H – I, 8 C). Pseudoscopula: tarsus I with apical half with weak coverage (Fig. 7 G); tarsus II, III and IV fully covered. PALP. Tibia with conspicuous retrolateral depression and spines distributed along margin (Fig. 7 C); embolus with torsion in apical portion, followed by a pronounced lamella, with upper and lower edges with different sizes (Figs 7 D – F, 8 E – F). PALP AND LEG MEASUREMENTS. Palp = 8.8 (3, 1.4, 3, 1.4), I = 22.1 (6.6, 3, 4.7, 5, 2.8), II = 18.9 (5.7, 2.5, 3.9, 4.4, 2.4), III = 16.6 (4.5, 2.3, 2.8, 4.6, 2.4), IV = 22.7 (5.9, 2.7, 5.2, 6, 2.9). SPINATION. Palp: Ti r 20, Ta d 0 - 0 - 8. Leg I: Pa v 0 - 0 - 4, Mt v 0 - 12, Ta p 0 - 1 - 1, r 1 - 1 - 1. Leg II: Ti v 0 - 1 - 1 - 2, Mt v 1 - 2 - 1 - 3, Ta p 1 - 1 - 2, r 1 - 1 - 3. Leg III: Fe d 1 - 2 - 2, Pa p 3 - 2 - 4, r 0 - 0 - 4, Ti d 0 - 1 - 0, v 1 - 2 - 2, p 1 - 1 - 4, r 1 - 1 - 2, Mt v 2 - 2 - 1 - 3, p 1 - 1 - 1, r 3 - 1 - 0, Ta p 1 - 2 - 3, r 0 - 1 - 1. Leg IV: Fe d 1 - 1 - 2, Ti v 1 - 1 - 3, Mt v 1 - 1 - 1 - 3, Ta p 1 - 1 - 4, r 0 - 0 - 2. Female (IBSP 9574) HABITUS. See Fig. 7 J. MEASUREMENTS. TBL 18.9, CL 8.2, CW 6.9, LL 1.2, LW 1.5, SL 4.7, SW 4. COLOR. Brown carapace and legs, light brown sternum and coxae (Fig. 7 J – K), grayish brown abdomen. PROSOMA. Carapace and ocular arrangement as shown in Fig. 7 J. Eye tubercle: 1.75 long, 1.83 wide. Distance AME-ALE 1. Eye diameters: AME 0.4, ALE 0.4, PME 0.3, PLE 0.5. Thoracic fovea procurved (Fig. 7 J). Labium with 7 cuspules (Fig. 7 K). Maxilla with 56 cuspules, distributed over anterior ventral half (Fig. 7 K). Basal segment of chelicerae with a prolateral row of 10 large teeth and a retrolateral row of 10 small teeth, grouped in basal half. Robust rastellum, presenting 18 – 20 short and thick spines on a tubercle. PALP AND LEG MEASUREMENTS. Palp = 12.3 (4.2, 2.7, 2.8, 2.6), I = 13.6 (4.6, 2.9, 2.9, 2.3, 0.9), II = 12.95 (4.3, 2.9, 2.5, 2.2, 1), III = 13.8 (3.7, 3.1, 2.3, 2.9, 1.85), IV = 19.4 (5.4, 3.8, 4.1, 4, 2.1). SPINATION. Palp: Fe p 0 - 0 - 2, Pa p 0 - 0 - 1, Ti p 3 - 6 - 7, r 3 - 5 - 12, Ta v 0 - 0 - 7, p 7 - 7 - 7, r 11 - 9 - 7. Leg I: Ti p 3 - 4 - 8, r 3 - 6 - 12, Mt p 9 - 6 - 5, r 8 - 7 - 5, Ta v 0 - 0 - 5, p 4 - 3 - 2, r 4 - 2 - 2. Leg II: Ti p 3 - 3 - 5, r 1 - 1 - 1, Mt p 9 - 7 - 7, r 3 - 3 - 2, Ta v 0 - 0 - 3, p 4 - 5 - 2, r 3 - 1 - 0. Leg III: Pa p 3 - 5 - 10, r 0 - 0 - 2, Ti v 0 - 0 - 2, p 1 - 3 - 3, r 0 - 2 - 6, Mt v 1 r- 1 r- 2, p 7 - 1 - 1, r 7 - 2 - 1, Ta v 0 - 3 - 8. Leg IV: Pa p 17 - 0 - 0, Ti v 1 - 1 - 1, Mt v 1 - 1 - 1 - 3, Ta v 0 - 3 - 8. SPERMATHECAE. Duct with apical half thicker than its basal half, oval receptacula (Fig. 7 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE867FFA1EECEFEE2FB7DFB03.taxon	distribution	Distribution Brazil. Widely distributed, occurring in areas with phytophysiognomies in the Caatinga and Cerrado. Records for Central-West region (Mato Grosso, Mato Grosso do Sul), Northeast region (Bahia, Ceará, Maranhão, Paraíba, Pernambuco and Piauí) and the northern part of Minas Gerais (Fig. 4 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE863FFA0EECDFADFFD44FA60.taxon	description	Figs 4 B, 9	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE863FFA0EECDFADFFD44FA60.taxon	diagnosis	Diagnosis Females of Idiops argus differ from the other Neotropical species by having the spermathecae with a unique morphology within the genus, with a long and spiral duct followed by an oval receptacle (Fig. 9).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE863FFA0EECDFADFFD44FA60.taxon	materials_examined	Type material Lectotype (here designated) VENEZUELA – Carabobo • ♀; Puerto Cabello, San Esteban; 1889; E. Simon leg.; MNHN 4169. Paralectotypes VENEZUELA – Carabobo • 1 ♀, 2 juvs; same collection data as for lectotype; MNHN 4169 a. Holotype of I. fulvipes Simon, 1889 VENEZUELA – Miranda • juv.; La Silla de Caracas, Parque Nacional El Ávila; 10 ° 32 ′ 0 ″ N, 66 ° 52 ′ 0 ″ W; 1889; MNHN.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE863FFA0EECDFADFFD44FA60.taxon	discussion	Remark: The type specimen of Idiops fulvipes was examined and recognized as a juvenile of I. argus. Although the spermathecae were presented by Dupérré & Tapia (2021: fig. 15 c – d), we detected that it is a pre-adult female of I. fulvipes.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE863FFA0EECDFADFFD44FA60.taxon	description	Description Male Unknown. Female (MNHN 4169) MEASUREMENTS. TBL 13.7, CL 6.7, CW 5.6, LL 0.9, LW 1.2, SL 3.9, SW 3.5. COLOR. Carapace, sternum and legs brownish. Abdomen ventrally brownish and dorsally gray. PROSOMA. Eye tubercle: 1.9 long; 1.7 wide. AME-ALE distance 1.2. Eye diameters: AME 0.3, ALE 0.5, PME 0.3, PLE 0.4. Thoracic fovea procurved. Labium with six cuspules. Maxilla with 54 cuspules, distributed over anterior ventral half. Basal segment of chelicerae with a prolateral row of 8 large teeth and 6 retrolateral small teeth, grouped in basal half. PALP AND LEG MEASUREMENTS. Palp = 11.4 (3.9, 2.4, 2.4, 2.4), I = 12.48 (4.04, 2.80, 2.64, 2.04, 0.96), II = 11.1 (3.68, 2.52, 2.16, 1.84, 0.92), III = 11.2 (3.2, 2.6, 1.8, 2, 1.6), IV = 15.9 (4.3, 3.1, 3.5, 3.2, 1.8). SPINATION. Palp: Fe p 0 - 0 - 1, Pa p 0 - 0 - 1, r 0 - 0 - 1, Ti p 8 - 7 - 13, r 7 - 7 - 12, Ta v 0 - 0 - 3, p 13 - 12 - 9, r 13 - 8 - 9. Leg I: Ti p 6 - 8 - 10, r 6 - 7 - 15, Mt p 12 - 10 - 7, r 11 - 9 - 8, Ta v 0 - 1 - 6, p 4 - 4 - 2, r 5 - 4 - 2. Leg II: Ti p 3 - 5 - 8, r 1 - 1 - 1, Mt p 13 - 11 - 6, r 1 - 2 - 2, Ta v 0 - 2 - 4, p 5 - 4 - 3, r 4 - 2 - 1. Leg III: Pa p 6 - 7 - 12, r 0 - 0 - 3, Ti v 2 - 2 - 2, p 2 - 3 - 6, r 1 - 2 - 4, Mt v 2 - 2 - 2, p 5 - 3 - 2, r 2 - 2 - 1, Ta v 0 - 4 - 11. Leg IV: Pa p 29 - 3 - 0, Ti v 1 - 1 - 2, Ta v 4 - 5 - 10. SPERMATHECAE. Long spiral ducts and bean-shaped receptacula (Fig 9).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE863FFA0EECDFADFFD44FA60.taxon	distribution	Distribution Venezuela. Carobobo and Miranda (Fig. 4 B).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87DFFBEEE1FFEE2FCDAFDEB.taxon	description	Figs 4 B, 10	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87DFFBEEE1FFEE2FCDAFDEB.taxon	diagnosis	Diagnosis The female of Idiops cambridgei differs from that of the other Neotropical species by the spermathecae having ducts with strong outward curvature in the transition between duct and receptacle, and small receptacula, with diameter slightly larger than the width of the duct (Fig. 10).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87DFFBEEE1FFEE2FCDAFDEB.taxon	materials_examined	Type material Holotype COLOMBIA • ♀; Bogotá; 1889; BMNH 1890.7.1.321.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87DFFBEEE1FFEE2FCDAFDEB.taxon	description	Description Male Unknown. Female (holotype BMNH 1890.7.1.321) MEASUREMENTS. TBL 12.9, CL 7, CW 5.4, LL 0.9, LW 1.2, SL 3, SW 3. COLOR. Carapace and legs brown. Sternum, coxae and abdomen brownish. PROSOMA. Eye tubercle: 1.4 long; 1.3 wide. AME-ALE distance 0.5. Eye diameters: AME 0.3, ALE 0.3, PME 0.2, PLE 0.3. Thoracic fovea procurved. Labium with 16 cuspules. Maxilla with 114 cuspules, distributed throughout ventral area. Basal segment of chelicerae with a prolateral row of 6 large teeth and 3 retrolateral small teeth, grouped in basal half. PALP AND LEG MEASUREMENTS. Palp = 8.3 (2.9, 1.8, 1.8, 1.8), I = 9.9 (3.4, 2.4, 1.9, 1.3, 0.9), II = 8.7 (2.9, 2, 1.7, 1.3, 0.8), III = 8.4 (2.4, 1.9, 1.5, 1.6, 1), IV = 11.2 (3.3, 2.3, 2.4, 2.1, 1.1). SPINATION. Palp: Fe p 0 - 0 - 3 ap, r 0 - 0 - 3 ap, Pa p 0 - 0 - 1, Ti p 5 - 5 - 7, r 2 - 4 - 7, Ta p 7 - 6 - 6, r 8 - 9 - 8. Leg I: Fe r 0 - 0 - 3, Ti p 5 - 5 - 5, r 4 - 4 - 8, Mt p 7 - 6 - 7, r 3 - 3 - 2, Ta p 3 - 2 - 1, r 2 - 1 - 1. Leg II: Ti p 2 - 4 - 3, r 3 - 3 - 1, Mt p 10 - 6 - 4, r 4 - 3 - 1, Ta p 3 - 2 - 2, r 2 - 0 - 0. Leg III: Pa p 5 - 9 - 25, r 0 - 1 - 1, Ti p 5 - 13 - 19, r 4 - 4 - 6, Mt v 0 - 1 - 2, p 8 - 5 - 5, r 5 - 0 - 1, Ta v 0 - 0 - 4. Leg IV: Pa p 31 - 31 - 23, Ti v 0 - 0 - 2, Mt v 1 - 2 - 3 ap, Ta v 0 - 3 - 3. SPERMATHECAE. Spherical receptacula. Duct with basal translucent area and median area sclerotized (Fig. 10).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87DFFBEEE1FFEE2FCDAFDEB.taxon	distribution	Distribution Colombia. Known only from the type locality (Fig. 4 B).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87CFFB8EE72FDB1FAF2FD3D.taxon	description	Figs 2 C – D, 5 A, 6 D, H – I, 11 – 12	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87CFFB8EE72FDB1FAF2FD3D.taxon	diagnosis	Diagnosis Males of Idiops camelus (Fig. 11 A – I, 12) differ from other Neotropical species by having the apical half of the embolus tapering (Fig. 11 D – F), with the presence of a distal embolar tooth (also present in I. clarus and I. germaini) close to the opening of the sperm duct (Fig. 12 E – F). Differs from I. clarus and I. germaini by having the apical portion of the embolus more expanded (Fig. 12 E – F). Females (Fig. 11 J – L) have spermathecae with spherical receptacles slightly wider than the ducts, with a subtle constriction between duct and receptacle (Fig. 11 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87CFFB8EE72FDB1FAF2FD3D.taxon	materials_examined	Type material Holotype of Pseudidiops camelus Mello-Leitão, 1937 BRAZIL – São Paulo • ♀; Corumbataí; IBSP 3429. Holotype of Idiops montealegrensis Soares, 1944 BRAZIL – São Paulo • ♂; Amparo, Monte Alegre, Fazenda Santa Maria; Nov. 1942; F. Lane leg.; MZSP 326. Other material examined BRAZIL – Minas Gerais • 1 ♀; Lima Duarte, Parque Estadual de Ibitipoca; 21 ° 43 ′ 0 ″ S, 43 ° 54 ′ 0 ″ W; 21 Oct. 1995; R. Baptista leg.; MNRJ • 1 ♀; Monte Verde, trail south of Monte Verde; 22 ° 51 ′ 27 ″ S, 46 ° 1 ′ 46 ″ W; V. Ghirotto leg.; CAD 827 • 8 ♂♂; Itajubá, Horto Florestal Anhumas; 22 º 25 ′ 36 ″ S, 45 º 28 ′ 10 ″ W; Mar. 2010; W. C. G. G. Castro leg.; UFMG 4274 • 7 ♂♂; same collection data as for preceding; UFMG 4270 • 7 ♂♂; same collection data as for preceding; UFMG 4272 • 7 ♂♂; same collection data as for preceding; UFMG 4275 • 8 ♂♂; same collection data as for preceding; UFMG 4273 • 8 ♂♂; same collection data as for preceding; UFMG 4271 • 2 ♂♂; Cristina, Parque Ecológico Municipal; 22 º 12 ′ S, 45 º 11 ′ W; Sep. 2009; C. G. G. Castro leg.; UFMG 4232 • 1 ♂; Nova Lima, RPPN Mata Samuel de Paula; 20 º 00 ′ S, 43 º 52 ′ W; 18 Oct. 2006; J. P. P. P. Barbosa et al. leg.; UFMG 2530 • 1 ♀; Bueno Brandão, 1.5 km from Socorro / Bueno Brandão; 22 ° 26 ′ 27 ″ S, 46 ° 21 ′ 3 ″ W; 22 Jul. 2010; R. P. Indicatti and B. Gambaré leg.; IBSP 210359 • 2 ♂♂; Delfim Moreira, Fazenda Boa Esperança; 22 º 34 ′ 33 ″ S, 45 º 19 ′ 19.7 ″ W; 3 Apr. 2014; A. Nogueira et al. leg.; IBSP 210175 • 1 ♀; Viçosa, Campus UFV, Recanto de Cigarras; 20 ° 45 ′ 37 ″ S, 42 ° 52 ′ 4 ″ W; 6 Mar. 2013; E. S. Barreto, A. A. Zaccaro and G. M. Diniz leg.; IBSP 221797. – Rio de Janeiro • 13 ♂♂, 1 ♀, 2 juvs; Itatiaia, Parque Nacional do Itatiaia; 22 ° 22 ′ 31 ″ S, 44 ° 39 ′ 44 ″ W; 20 – 30 May 2013; R. P. Indicatti and F. U. Yamamoto leg.; IBSP 225155 • 1 ♀; Itatiaia, Parque Nacional do Itatiaia; 22 ° 22 ′ 31 ″ S, 44 ° 39 ′ 44 ″ W; 19 – 21 Mar. 2019; R. F. Ferreira, R. Indicatti, A. G. Lima and I. Meireles leg.; CAD 289 • 1 ♂; Itatiaia, Parque Nacional do Itatiaia, Cachoeira Poranga; 22 º 26 ′ 25.7 ″ S, 44 º 36 ′ 40 ″ W; 17 Apr. 2014; R. Pinto da Rocha, A. Benedeti, D. Chiviri and J. Cabra leg.; IBSP 210439 • 2 ♂♂; Itatiaia, Parque Nacional do Itatiaia, Casa Jardim Botânico; 22 º 27 ′ 07 ″ S, 44 º 36 ′ 35 ″ W; 17 Apr. 2014; R. Pinto da Rocha, A. Benedeti, D. Chiviri and J. Cabra leg.; IBSP 210440. – Sao Paulo • 2 ♀♀; São José do Barreiro, Parque Nacional da Serra da Bocaina, behind the accommodation; 23 ° 2 ′ 30 ″ S, 44 ° 39 ′ 42 ″ W; 24 – 26 Mar. 2019; R. F. Ferreira, A. Galleti, I. Meirelles and R. Indicatti leg.; CAD 830 • 1 ♂; São José do Barreiro, Parque Nacional da Serra da Bocaina; 22 º 43 ′ S, 44 º 36 ′ W; 28 Apr. – 3 May 2002; Equipe Biota leg.; IBSP 12372 • 1 ♂; Salesópolis, Estação Biológica de Boracéia; 23 º 39 ′ S, 45 º 53 ′ W; Jun. 2003; J. P. L. Guadanucci leg.; MZSP 27668 • 1 ♂; Salesópolis, Estação Biológica de Boracéia; MZSP 21159 • 2 ♂♂; Salesópolis, Estação Biológica de Boracéia; 11 May. 2003; J. P. L. Guadanucci leg.; MZSP 22005 • 8 ♂♂; Salesópolis, Estação Biológica de Boracéia; 7 Mar. 2003; J. P. L. Guadanucci leg.; MZSP 23714 • 1 ♀; Salesópolis, Estação Biológica de Boracéia; Dec. 1949; I. Travassos leg.; MZSP 11326 • 1 ♂; Salesópolis, Estação Biológica de Boracéia; Mar. 2006; M. U. Prado et al. leg.; IBSP 14547 • 1 ♀; Mogi-Salesópolis Road, Km 91; 25 Jun. 2002; R. Martins et al. leg.; IBSP 13111 • 1 ♂; Amparo, Fazenda Santa Maria; 22 ° 42 ′ 3 ″ S, 46 ° 45 ′ 50 ″ W; Nov. 1942; F. Lane leg.; MZSP 326 • 4 ♀♀; Iperó, Floresta Nacional de Ipanema; 23 ° 25 ′ 49 ″ S, 47 ° 37 ′ 22 ″ W; 10 – 14 Oct. 2019; J. P. L. Guadanucci, R. P. Indicatti and A. Galleti-Lima leg.; CAD 828 • 3 ♂♂; Santa Gertrudes, Fazenda Paraguaçu; 22 ° 27 ′ 25 ″ S, 47 ° 31 ′ 48 ″ W; J. H. B. Medeiros leg.; IBSP 243977 • 1 ♀; Barra Bonita; 22 ° 29 ′ 42 ″ S, 48 ° 33 ′ 28 ″ W; 6 Nov. 1979; O. Froelich leg.; MZSP 13876 • 2 ♂♂; Botucatu, Fazenda Edgardia, Mata do Bixiguento; 22 ° 50 ′ 25.08 ″ S, 48 ° 20 ′ 48.25 ″ W; Apr. 2014; R. C. B. Paradero leg.; IBSP 229983 • 4 ♂♂; Luis Antonio, Estação Ecológica de Jataí; 21 ° 37 ′ 3 ″ S, 47 ° 45 ′ 55 ″ W; 6 – 12 Dec. 2009; A. G. Cristovão leg.; IBSP 220958 • 3 ♂♂; same collection data as for preceding; IBSP 220944 • 1 ♂; same collection data as for preceding; IBSP 220949 • 3 ♂♂; Luis Antonio, Estação Ecológica de Jataí; 3 – 7 Oct. 2009; A. G. Cristovão leg.; IBSP 220948 • 5 ♂♂; same collection data as for preceding; IBSP 220961 to 220963, IBSP 220966 to 220967 • 8 ♂♂; Luis Antonio, Estação Ecológica de Jataí; Jan. 2010; A. G. Cristovão leg.; IBSP 243964, IBSP 243966 to 243972 • 2 ♂♂; same collection data as for preceding; IBSP 43965 • 2 ♂♂; Jacareí, Campos Vila Branca, UNIVAP; 23 ° 13 ′ S, 45 ° 58 ′ W; 2007; N. M. C. Velho et al. leg.; IBSP 141829 • 33 ♂♂; same collection data as for preceding; IBSP 141786, IBSP 141788 to 141791, IBSP 141796, IBSP 141798 to 141800, IBSP 141804 to 141810, IBSP 141818 to 141821, IBSP 141823 to 141828, IBSP 141831 to 141832, IBSP 141834 to 141835, IBSP 141837 to 141838, IBSP 143973 • 2 ♂♂; same collection data as for preceding; IBSP 141792 • 2 ♂♂; same collection data as for preceding; IBSP 141794 • 2 ♂♂; same collection data as for preceding; IBSP 141802 • 2 ♂♂; same collection data as for preceding; IBSP 141822 • 2 ♂♂; same collection data as for preceding; IBSP 141830 • 1 ♀; Mococa; 21 ° 28 ′ 4 ″ S, 47 ° 0 ′ 18 ″ W; 6 Mar. 1991; J. A. Azevedo leg.; IBSP 11834 • 1 ♂; Itapecerica da Serra; 23 ° 43 ′ 1 ″ S, 46 ° 50 ′ 56 ″ W; IBSP 212207 • 1 ♂; Mairiporã, Parque Estadual da Serra da Cantareira; 23 º 25 ′ S, 46 º 37 ′ W; 24 Feb 2001; C. L. Firmo leg.; MCN 41851 • 2 ♂♂; Mairiporã, Parque Estadual da Serra da Cantareira, Pinheirinho; 23 º 25 ′ S, 46 º 37 ′ W; 17 Dec. 2000; MZSP 25748, MZSP 26029 • 3 ♂♂; Mairiporã, Parque Estadual da Serra da Cantareira, Pinheirinho; 24 Feb. 2001; MZSP 26030 to 26032 • 2 ♂♂; Mairiporã, Parque Estadual da Serra da Cantareira, Pinheirinho; 27 Apr. 2001; MZSP 26035 to 26036 • 1 ♂; Mairiporã, Parque Estadual da Serra da Cantareira, Pinheirinho; 1 Jul. 2001; MZSP 26033 • 1 ♂; Mairiporã, Parque Estadual da Serra da Cantareira, Pinheirinho; 27 May 2001; MZSP 26034 • 1 ♂; Paraibuna, Sitio Amici; 23 ° 23 ′ 9 ″ S, 45 ° 39 ′ 43 ″ W; 13 Jul. 2003; M. B. da Silva leg.; MZSP 21820 • 1 ♀; Jaú; 22 ° 17 ′ 45 ″ S, 48 ° 33 ′ 28 ″ W; 21 Dec. 2011; A. M. Giroti leg.; IBSP 210069 • 1 ♂; Paraibuna, Sitio Amici; 2008; A. M. Giroti leg.; IBSP 151641 • 1 ♀; Campinas, Condomínio Caminhos de San Conrado; 22 ° 54 ′ S, 47 ° 3 ′ W; 9 Jan. 2019; V. Ghirotto leg.; CAD 831 • 1 ♀; Campinas; 24 Aug. 1974; O. Froelich leg.; MZSP 13880 • 1 ♂; Jundiaí, Parque Estadual Serra do Japi; 23 º 17 ′ S, 46 º 59 ′ W; 13 Nov. 2007; J. Sobjac leg.; UFMG 6475 • 1 ♂; Itirapina; 22 ° 15 ′ 10 ″ S, 47 ° 49 ′ 22 ″ W; 19 Jul. 2000; G. Machado leg.; MZSP 20612 • 1 ♂; Estação Ecológica de Itirapina; 22 ° 13 ′ 10 ″ S, 47 ° 53 ′ 54 ″ W; 4 – 9 Oct. 2001; E. S. Cunha leg.; IBSP 13380 • 1 ♂; Santo André, Reserva Biológica do Alto da Serra de Paranapiacaba; 23 º 46 ′ S, 46 º 18 ′ W; 20 Mar. 2007; M. U. Prado et al. leg.; IBSP 14566 • 1 ♀; Santo André, Reserva Biológica do Alto da Serra de Paranapiacaba; 17 Nov. 2006; M. U. Prado et al. leg.; IBSP 14567 • 1 ♀; São Carlos; 22 ° 0 ′ 0 ″ S, 47 ° 53 ′ 27 ″ W; 9 Jun. 1946; F. Salto leg.; MZSP E- 3095 • 1 ♂; Itapevi, Condomínio Trensurb; 23 ° 32 ′ 56 ″ S, 46 ° 56 ′ 2 ″ W; 27 Oct. 2000; V. Onofrio and D. M. B. B. Batesti leg.; IBSP 123524 • 1 ♂; Itapevi, Condomínio Trensurb; 2000; V. Onofrio and D. M. B. B. Batesti leg.; IBSP 123525 • 1 ♀; Mogi das Cruzes; 23 º 31 ′ 26,27 ″ S, 46 º 11 ′ 0,685 ″ W; 30 Oct. 2009; R. Quadros leg.; UFMG 6265 • 9 ♂♂; Mogi das Cruzes, Parque Natural Municipal Serra do Itapety; 23 º 29 ′ S, 46 º 12 ′ W; 13 Nov. – 19 Dec. 2003; Equipe Biota leg.; IBSP 13391, IBSP 13393, IBSP 13395 to 13396, IBSP 13398 to 13399, 13401 to 13403 • 1 ♂; same locality as for preceding; 5 Jun. 2003; IBSP 13392 • 2 ♂♂; Mogi das Cruzes, Parque Natural Municipal Serra do Itapety; May 2003; P. Goldoni et al. leg.; IBSP 10189 to 10190 • 1 ♂; Itapevi, Parque Natural Municipal Serra do Itapety; Feb. – Mar. 2004; P. Goldoni et al. leg.; IBSP 11781 • 2 ♂♂; Itapevi, Parque Natural Municipal Serra do Itapety; 2014 – 2015; C. C. Barbosa leg.; IBSP 258651 to 258652 • 1 ♂; São Bernardo do Campo; 23 ° 41 ′ 38 ″ S, 46 ° 33 ′ 54 ″ W; 17 Apr. 2009; Pref. Mun. SB Campo leg.; IBSP 151640 • 2 ♀♀; Socorro, Gruta do Anjo; 22 ° 35 ′ 27 ″ S, 46 ° 31 ′ 44 ″ W; 19 – 26 Dec. 2010; R. P. Indicatti and B. Gambaré leg.; IBSP 210350 to 210351 • 1 ♀; São Paulo; 23 º 25 ′ S, 46 º 37 ′ W; 5 Feb. 1996; L. A. Leme et al. leg.; IBSP 10569 • 1 ♂; São Paulo; 21 Oct. 2004; R. M. Nori leg.; IBSP 11040 • 1 ♂; São Paulo; 20 Oct. 2002; D. P. C. Souza leg.; IBSP 9961 • 1 ♂; São Paulo; Oct. 1971; A. Guarnieri leg.; IBSP 2113 • 1 ♂; São Paulo; 3 Oct. 1991; N. Cochrane leg.; IBSP 8256 • 1 ♀; São Paulo; 1937; A. Franci leg.; IBSP 3723 • 1 ♀; São Paulo, Serra da Cantareira; 27 Aug. 1999; F. L. da Silva leg.; IBSP 9579 • 1 ♂; São Paulo, Parque Estadual da Serra da Cantareira; 23 º 25 ′ S, 46 º 37 ′ W; 17 Dec. 2000; C. L. Firmo leg.; MCN 41849 • 1 ♂; São Paulo, Parque Estadual da Serra da Cantareira; 27 Apr. 2001; A. D. Brescovit leg.; MCN 41850 • 11 ♂♂; São Paulo, Parque Estadual da Serra da Cantareira; 3 Mar. – 5 Jul. 2000; S. Favorito et al. leg.; MZSP 21316 • 2 ♂♂; same collection data as for preceding; MZSP 21324 • 2 ♂♂; same collection data as for preceding; MZSP 21325 • 2 ♂♂; same collection data as for preceding; MZSP 21314 • 3 ♂; same collection data as for preceding; MZSP 21322 • 6 ♂♂; same collection data as for preceding; MZSP 21323 • 2 ♂♂; same collection data as for preceding; MZSP 21313 • 4 ♂♂; same collection data as for preceding; MZSP 21326 • 2 ♂♂; same collection data as for preceding; MZSP • 2 ♂♂; same collection data as for preceding; MZSP 21309 • 6 ♂♂; same collection data as for preceding; MZSP 21306 • 7 ♂♂; same collection data as for preceding; MZSP 21305 • 8 ♂♂; same collection data as for preceding; MZSP 21304 • 5 ♂♂; same collection data as for preceding; MZSP 21320 • 18 ♂♂; same collection data as for preceding; MZSP 21307, MZSP 21315, MZSP 21329, MZSP 21333, MZSP 21335 to 21336, MZSP 21338 to 21342, MZSP 21345 to 21346, MZSP 21348 to 21352 • 2 ♀♀; same collection data as for preceding; MZSP 21311, MZSP 21330 • 2 ♂♂; same collection data as for preceding; IBSP 13088 • 6 ♂♂; same collection data as for preceding; IBSP 13082, IBSP 13084, IBSP 13087, IBSP 13089, IBSP 13094 to 13095, IBSP 13095 • 1 ♂; São Paulo, Parque Estadual da Serra da Cantareira; 29 Apr. 2001; R. Pinto da Rocha leg.; MCN 41848 • 1 ♀; São Paulo, Parque Estadual da Serra da Cantareira; 18 Aug. 1999; F. L. da Silva leg.; IBSP 7913 • 1 ♂; São Paulo, Parque Estadual da Serra da Cantareira; 24 Jan. 2001; F. L. da Silva leg.; IBSP 130688 • 1 ♂; same locality as for preceding; 27 Apr. 2001; F. L. da Silva leg.; IBSP 130689 • 1 ♂; São Paulo, Parque Estadual da Serra da Cantareira; 1 Aug. 2001; F. L. da Silva leg.; IBSP 130690 • 1 ♂; same locality as for preceding; 1 Jul. 2001; IBSP 130687 • 1 ♂; same locality as for preceding; 27 May 2001; IBSP 130686 • 1 ♂; same collection data as for preceding; IBSP 130691 • 9 ♂♂; São Paulo, Parque Estadual da Serra da Cantareira; 17 Jul. 2000 – 1 Aug. 2001; C. L. Firmo leg.; MZSP 24046, MZSP 26027, MZSP 26037, MZSP 26039 to 26040, MZSP 26042, MZSP 26044 to 26046 • 2 ♂♂; same collection data as for preceding; MZSP 26041, MZSP 26038 • 5 ♂♂; São Paulo, Parque Estadual da Serra da Cantareira, Pedra Grande; 23 º 25 ′ S, 46 º 37 ′ W; 17 Dec. 2000 – 1 Jul. 2001; C. L. Firmo leg.; MZSP 26023 to 26026, MZSP 26028 • 1 ♂; São Paulo, Parque Estadual da Serra da Cantareira, Pedra Grande; 25 Aug. – 3 Sep. 2000; C. C. Aires et al. leg.; MZSP 21328 • 1 ♀; São Paulo, Parque Estadual do Jaraguá; 23 ° 27 ′ 34.3 ″ S, 46 ° 46 ′ 2.8 ″ W; Apr. 2015; R. P. Indicatti and J. P. L. Guadanucci leg.; CAD 598 • 1 ♀; same locality as for preceding; Mar. 2015; R. P. Indicatti and J. P. L. Guadanucci leg.; CAD 605 • 1 ♀; São Paulo, Parque Estadual do Jaraguá; 18 Jul. 2010 – 31 Aug. 2012; R. P. Indicatti leg.; IBSP 171840 • 6 ♂♂; same collection data as for preceding; IBSP 171802, IBSP 171842 to 171843, IBSP 171845 to 171847 • 1 ♂; São Paulo, Jardim Botânico de São Paulo; 23 ° 38 ′ 30.7 ″ S, 46 ° 37 ′ 14.2 ″ W; 20 Oct. 1950; Kulmann leg.; MZSP 7800 • 1 ♀; São Paulo, Ipiranga; 23 ° 35 ′ 07.8 ″ S, 46 ° 35 ′ 56.4 ″ W; 5 Jan. 1998; MZSP 16060 • 1 ♀; São Paulo, Santo Amaro; 23 º 25 ′ S, 46 º 37 ′ W; 16 – 17 Dec. 1966; P. de Biasi leg.; MZSP 5399 • 1 ♀; São Paulo, Campus USP; 23 ° 33 ′ 34 ″ S, 46 ° 43 ′ 26 ″ W; 10 Sep. 1975; O. Froelich leg.; MZSP 13886 • 1 ♂; São Paulo, Mata do Viveiro; 1980; MZSP 19530 • 1 ♂; São Paulo, Instituto de Pesquisas Energéticas e Nucleares; 12 Aug. 1991; P. I. Spencer leg.; IBSP 9576 • 2 ♂♂; São Paulo, Campus Instituto Butantan; 23 º 33 ′ S, 46 º 43 ′ W; 12 – 13 Nov. 2012; Equipe IBSP leg.; IBSP 210144 • 1 ♂; São Paulo, Campus Instituto Butantan; 30 Jul. 2009; F. P. Santos leg.; IBSP 210130 • 1 ♂; São Paulo, Campus Instituto Butantan; IBSP 9592 • 1 ♂; São Paulo, Campus Instituto Butantan; 20 Oct. 1988; A. Hoge leg.; IBSP 9563 • 1 ♂; São Paulo, Campus Instituto Butantan; 7 Aug. 2003; D. Candiani and C. S. Fukushima leg.; IBSP 9835 • 1 ♂; São Paulo, Campus Instituto Butantan; Sep. 1992; C. Bertin leg.; IBSP 9590 • 2 ♂♂; São Paulo, near the Instituto Butantan; 30 Oct. 2003; IBSP 12344 • 3 ♂♂; São Paulo, Parque da Previdência; 23 º 34 ′ S, 45 º 43 ′ W; May 2000 – Feb. 2001; D. Candiani leg.; IBSP 14398, IBSP 14742 to 14743 • 2 ♀♀; São Paulo, Parque Ilha dos Eucaliptos, Represa Guarapiranga; 23 ° 40 ′ 17 ″ S, 46 ° 43 ′ 39 ″ W; 7 – 13 Apr. 2005; I. Cizauskas leg.; IBSP 13788, IBSP 13790 • 4 ♂♂; São Paulo, Parque do Estado; 23 ° 38 ′ 24.6 ″ S, 46 ° 37 ′ 3.1 ″ W; 26 Jul. – 1 Aug. 2002; Valvassori leg.; IBSP 13340 to 13342, IBSP 13345 • 13 ♂♂; São Paulo, Parque dos Príncipes; 23 º 25 ′ S, 46 º 37 ′ W; 2005; IBSP 13234 b • 1 ♂; São Paulo, Morumbi; 23 ° 36 ′ 0 ″ S, 46 ° 43 ′ 12 ″ W; Oct. 1968; O. Mamino leg.; IBSP 293 • 1 ♂; São Paulo, Parque Estadual Alberto Loefgren, Mandaqui; 23 ° 27 ′ 33 ″ S, 46 ° 38 ′ 2 ″ W; May 1973; IBSP 102438 • 1 ♀; highway Raposo Tavares, Km 21; 21 Jul. 1977; P. Alicke leg.; IBSP 104270 • 10 ♂♂; Cotia, Reserva do Morro Grande; 23 ° 38 ′ 58.12 ″ S, 46 ° 57 ′ 45.99 ″ W; Jul. 2006; C. Bragagnollo leg.; MZSP 28831 • 9 ♂♂ (SEM); same collection data as for preceding; MZSP 28832 • 3 ♂♂; same collection data as for preceding; MZSP 28823 • 2 ♀♀; Itapetininga, Estação Ecológica de Angatuba; 23 ° 24 ′ 57 ″ S, 48 ° 21 ′ 39 ″ W; 11 – 16 Nov. 2002; C. Firmo et al. leg.; IBSP 258658 to 258659 • 2 ♂♂; Itanhaém, Estação Ecológica São Camilo, Suarão; 24 º 10 ′ 60 ″ S, 46 º 46 ′ 60 ″ W; Dec. 2010; G. Aparecida and M. Pessoa leg.; IBSP 224494 to 224495 • 1 ♂; Peruíbe, Estação Ecológica da Juréia Itatins, Núcleo Arpoador; 24 º 23 ′ 13 ″ S, 47 º 1 ′ 3,3 ″ W; 21 – 26 Apr. 2012; G. Azevedo and J. P. P. P. Barbosa leg.; UFMG 11788. – Santa Catarina • 4 ♂♂; Balneário Camboriú; 26 º 59 ′ 27 ″ S, 48 º 38 ′ 38.6 ″ W; Jun. 2009 – Jun. 2010; M. Zucatelli leg.; IBSP 245677 to 245680.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87CFFB8EE72FDB1FAF2FD3D.taxon	description	Description Male (MZSP 26023) HABITUS. See Fig. 11 A. MEASUREMENTS. TBL 12.8, CL 7, CW 5.9, LL 0.9, LW 1.2, SL 3.4, SW 4. COLOR. Brownish carapace and legs, sternum and coxae yellow brown (Fig. 11 A – B), abdomen brown. PROSOMA. Carapace and ocular arrangement as shown in Fig. 11 A. Eye tubercle: 1.6 long; 1.5 wide. Distance AME-ALE 0.9. Eye diameters: AME 0.4, ALE 0.4, PME 0.4, PLE 0.5. Thoracic fovea procurved (Fig. 11 A). Labium and sternum without cuspules (Fig. 11 B). Basal segment of chelicerae with a prolateral row of 9 teeth, 7 large and 2 small, and 6 small retrolateral teeth (Fig. 12 A). Salient rastellum, presenting 12 – 13 spines of the same size (Fig. 12 A – B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 11 G. Leg I with double tibial apophysis, with wider apical branch, thickened base and conical distal area (Figs 11 H – I, 12 C). Pseudoscopula: tarsus I – III covered, IV absent. PALP. Tibia with conspicuous retrolateral depression, bordered by short spines, with the exception of the spines of the basal and apical ends, which are twice the size of the others (Fig. 11 C); embolus with subapical torsion and presence of a small lamella at spermatic duct opening (Figs 11 D – F, 12 E – F). PALP AND LEG MEASUREMENTS. Palp = 10.6 (3.6, 2, 3.5, 1.5), I = 19.7 (5.9, 2.8, 4.4, 4.3, 2.3), II = 24 (6.3, 2.9, 5.4, 6.1, 3.3), III = 18.3 (4.6, 2.8, 3.1, 4.9, 2.9), IV = 24.9 (6.6, 3,3, 5.4, 6.3, 3.3). SPINATION. Palp: Ti r 3 - 3, Ta d- 0 - 0 - 6. Leg I: Ti r 0 - 1 - 2, Mt p 5 - 3 - 2, r 1 - 1 - 2, Ta p 4 - 3 - 1, r 3 - 2 - 2. Leg II: Ti v 1 - 2 - 1 - 2, Mt p 0 - 0 - 1, r 1 - 1 - 3, Ta p 0 - 1 - 2, r 0 - 2 - 3. Leg III: Pa p 4 - 5 - 7, r 0 - 0 - 3, Ti v 0 - 2 - 0 - 4, p 1 - 2 - 2, r 0 - 1 - 3, Mt v 2 - 3 - 2 - 3, p 3 - 3 - 3, r 3 - 1 - 3, Ta p 1 - 2 - 5, r 0 - 2 - 3. Leg IV: Pa p 17 - 4 - 0, Ti v 0 - 2 - 0 - 4, Mt v 1 - 2 - 2 - 3, Ta v 2 - 4 - 11. Female (IBSP 9579) HABITUS. See Fig. 11 J. MEASUREMENTS. TBL 18.4, CL 8.3, CW 8, LL 1.5, LW 1.8, SL 5.4, SW 4.9. COLOR. Brownish carapace and legs, sternum and coxae yellow brown (Fig. 11 J – K), abdomen brown. PROSOMA. Carapace and ocular arrangement as shown in Fig. 11 J. Eye tubercle: 2 long; 2 wide. Distance AME-ALE 1.3. Eye diameters: AME 0.4, ALE 0.6, PME 0.3, PLE 0.6. Thoracic fovea procurved (Fig. 11 J). Labium with 2 – 5 cuspules (Fig. 11 K). Maxilla with 48 cuspules, distributed over the anterior ventral half (Fig. 11 K). Basal segment of chelicerae with a prolateral row of 6 large teeth and a retrolateral row with 4 small teeth. PALP AND LEG MEASUREMENTS. Palp = 14.3 (4.8, 3.2, 3.1, 3.2), I = 16.7 (5.4, 3.7, 3.6, 2.8, 1.2), II = 14.9 (4.9, 3.4, 3, 2.3, 1.3), III = 15.6 (4.3, 3.7, 2.4, 3.1, 2.1), IV = 21.6 (6.1, 4.4, 4.5, 4.3, 2.3). SPINATION. Palp: Fe p 0 - 0 - 1, Pa p 0 - 0 - 1, Ti p 9 - 6 - 12, Ta p 14 - 11 - 10. Leg I: Ti p 7 - 7 - 10, r 8 - 7 - 13, Mt p 11 - 9 - 7, r 12 - 8 - 13, Ta v 0 - 0 - 5, p 6 - 5 - 3, r 6 - 4 - 3. Leg II: Ti p 4 - 4 - 7, r 2 - 1 - 7, Mt p 8 - 4 - 2, r 12 - 8 - 10, Ta v 0 - 0 - 9, p 6 - 1 - 2, r 6 - 5 - 3. Leg III: Pa p 5 - 5 - 17, r 0 - 1 - 4, Ti v 1 - 1 - 1, p 4 - 5 - 12, r 1 - 3 - 10, Mt v 1 - 2 - 2, p 11 - 3 - 3, r 8 - 2 - 1, Ta v 0 - 1 - 4, p 0 - 1 - 3, r 0 - 0 - 1. Leg IV: Pa p 65 - 7 - 0, Ti v 2 - 1 - 3, Mt 1 - 3 - 2, p 0 - 1 - 0, Ta v 1 - 5 - 11. SPERMATHECAE. Receptacula with evident granules. Duct with sclerotized apical portion (Fig. 11 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87CFFB8EE72FDB1FAF2FD3D.taxon	distribution	Distribution. Brazil. Mainly distributed in Atlantic Forest phytophysiognomies, with records for Southeast region (center-south of Minas Gerais, Rio de Janeiro and São Paulo) and northeast of Santa Catarina (Fig. 3 D).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87AFFB6EDD0FCE3FE6FFBDA.taxon	description	Figs 3 B, 6 D – E, 13 – 14	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87AFFB6EDD0FCE3FE6FFBDA.taxon	diagnosis	Emended diagnosis The male of Idiops carajas (Figs 13 A – I, 14) differs from the other Neotropical species, except I. petiti, by the palpal tibia having spines concentrated on the basal half of the retrolateral depression (Figs 13 C, 14 D), apophysis with a narrow rectangular apical branch (Figs 13 G – H, 14 C) and by the presence of a lateral lamella that extends along the median portion of the embolus (Figs 13 E – F). Differs from I. petiti by having the subapical portion of the embolus thickened in dorsal view (Fig. 13 D) and the arrow-shaped apical end in retrolateral view (Figs 13 E – F, 14 E). Females (Fig. 13 J – L) are distinguished from congeners, except I. petiti, by having the spermathecae with a sclerotized trapezoidal base. Differs from I. petiti by the ducts having a thickened basal half and shorter apical half and by the rounded receptacles, separated from the ducts by a strong constriction (Fig. 13 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87AFFB6EDD0FCE3FE6FFBDA.taxon	materials_examined	Type material Holotype BRAZIL – Pará • ♂; Parauapebas, FLONA Carajás Serra Norte, cave GEM- 1758; 5 ° 52 ′ 0.00 ″ S, 49 ° 52 ′ 60.00 ″ W; 23 Nov. 2010; R. A. Zampaulo leg.; IBSP 166619. Paratype BRAZIL – Pará • 1 ♀; same collection data as for holotype; IBSP 166620. Other material examined BRAZIL – Amazonas • 1 ♂; Benjamin Constant; 4 ° 22 ′ 58 ″ S, 70 ° 1 ′ 51 ″ W; 2014; P. S. Pompeu et al. leg.; IBSP 243963. – Pará • 1 ♂ (SEM); Paraoapebas, Serra Norte, Serra de Carajás; 5 ° 52 ′ S, 49 ° 53 ′ W; 29 Mar. – 6 Apr. 1989; N. Degallier leg.; MPEG 0109 • 1 ♂; Flona Carajás, Cave N 3 - 033; 6 ° 6 ′ 34.92 ″ S, 50 ° 11 ′ 40.11 ″ W; 5 – 17 Mar. 2013; Equipe Carste leg.; IBSP 174029 • 1 ♂; Melgaço, Igarapé do Laranjal; 1 ° 48 ′ 21.44 ″ S, 50 ° 43 ′ 0 ″ W; 7 Apr. 1998; J. A. R. Bernardi and R. A. J. Rocha leg.; MPEG 0111 • 1 ♂; Almeirim, Rio Jari; 00 ° 41 ′ 25.93 ″ S, 52 ° 49 ′ 9.21 ″ W; 17 – 23 Aug. 2004; T. Gardner leg.; MPEG 7592 • 1 ♂; Almeirim, Rio Jari; 3 Apr. 2005; T. Gardner leg.; MPEG 7589 • 1 ♂; Almeirim, Rio Jari; 2004; T. C. S. Avila Pires leg.; MPEG 7591 • 2 ♂♂; Almeirim, Rio Jari; 22 Mar. 2005; T. Gardner & M. A. Ribeiro Junior leg.; MPEG 7587, MPEG 7590 • 1 ♂; Tucuruí, Base IV; 3 ° 46 ′ 4 ″ S, 49 ° 40 ′ 22 ″ W; 8 – 22 Feb. 1980; T. Gardner leg.; MPEG 0115. – Mato Grosso • 1 ♂; Chapada dos Guimarães; 15 ° 27 ′ 39 ″ S, 55 ° 45 ′ 0 ″ W; 18 Jun. 2000; C. Strussmann leg.; MCTP 11192 • 1 ♂; Porto Estrela; 15 ° 19 ′ 26 ″ S, 57 ° 13 ′ 40 ″ W; 5 May 2019; J. R. Lema, D. Castro and M. Pessoa-Silva leg.; IBSP 249141. – Mato Grosso do Sul • 1 ♂; Corumbá, Morro Santa Cruz; 19 ° 12 ′ 07.6 ″ S, 57 ° 36 ′ 09.9 ″ W; Jun. 2003; V. L. Ferreira leg.; MCTP 17591. – Tocantins • 1 ♂; Ananás; 6 ° 13 ′ 34.70 ″ S, 48 ° 25 ′ 2.39 ″ W; 21 Apr. 2009; W. U. Oliveira and M. D. Miranda leg.; UFMG 5749.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87AFFB6EDD0FCE3FE6FFBDA.taxon	description	Emended description Male and female recently described by Fonseca-Ferreira et al. (2017). New data on the male and female are included. Male (holotype IBSP 166619) PROSOMA. Basal segment of chelicerae with a prolateral row of 9 teeth, 6 large and 3 small, and 5 small retrolateral teeth (Fig. 14 A); salient rastellum, presenting 12 – 13 short, thick spines with larger distal ends (Fig. 14 B). Female (paratype IBSP 166620) PROSOMA. Basal segment of chelicerae with a prolateral row of 9 large teeth and 5 small retrolateral teeth; robust rastellum, presenting approximately 25 short and thick spines on a tubercle.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE87AFFB6EDD0FCE3FE6FFBDA.taxon	distribution	Distribution Brazil. Distributed in the phytophysiognomies of Amazon and Cerrado, with records from the west of Central-west region (Mato Grosso, Mato Grosso do Sul) and from the North region (Amazonas, Pará and Tocantins) (Fig. 3 B).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE877FFB2EE01FEE2FDC0FC6F.taxon	description	Figs 3 C, 6 B, 15 – 16	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE877FFB2EE01FEE2FDC0FC6F.taxon	diagnosis	Emended diagnosis Males (Fig. 15 A – H) and females (Fig. 15 I – K) of Idiops clarus differ from the other Neotropical species by having the posterior lateral eyes separated from the median eye group (Fig. 15 A, I) and by the rounded sternum (Fig. 15 B). Males also differ from others by having the palpal tibia short and thick, with a projection at the base of the retrolateral depression (also present in I. fuscus and I. pirassunsunguensis) (Fig. 15 C) and by the presence of a distal embolar tooth close to the opening of the sperm duct (also present in I. germaini) (Fig. 16 E). Females differ by the aspect of the spermathecae with the extensive basal area divided by a non-sclerotized portion and by ducts distant from each other and a sclerotized area in the transition between duct and receptacle (Fig. 15 K).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE877FFB2EE01FEE2FDC0FC6F.taxon	materials_examined	Type material Holotype URUGUAY – Florida • ♂; San Gabriel; A. Juambeltz leg.; MHNM. The type specimen was not found in the MHNM, probably lost. Other material examined URUGUAY – Rivera • 1 ♂ (SEM); Rivera, Near Vichadero; 31 ° 48 ′ S, 54 ° 43 ′ W; 23 Nov. 1959; C. C., P. S. M. and A. M. leg.; FCE 0340. – Cerro Largo • 1 ♂; Arroyo Chui del Tacuarí; 32 ° 32 ′ 42 ″ S, 54 ° 2 ′ 45 ″ W; 15 Nov. 1972; A. S. P., C. C., L. Z. C. and N. E. L. leg.; MNHN 295. – Río Negro • 1 ♂; Tres Arboles; 32 ° 26 ′ S, 56 ° 42 ′ W; 1 Apr. 2009; Stora Enso / Trampa PC; FCE 1075 • 1 ♂; Tres Arboles; 1 Apr. 2009; Stora Enso / Trampa PB 2; FCE 1085 • 2 ♂♂; Tres Arboles; 1 Mar. 2009; Stora Enso / Trampa PC; FCE 1115 • 1 ♂; Tres Arboles; 1 Feb. 2009; Stora Enso / Trampa PB 4; FCE 1118 • 2 ♂♂; Tres Arboles; 1 Mar. 2009; Stora Enso / Trampa ECD; FCE 1152 • 1 ♂; Tres Arboles; 1 Mar. 2009; Stora Enso / Trampa PB; FCE 1161 • 4 ♂♂; 1 Jan. 2009; Stora Enso / Trampa MB and EC; FCE 1171. – Treinta y Tres • 1 ♂; Santa Clara de Olimar; 32 ° 55 ′ S, 54 ° 58 ′ W; 12 Jan. 1960; L. C. Zolessi and A. Spiritoso leg.; FCE 0337. – Lavalleja • 1 ♀, 1 juv.; Aguas Blancas; 34 ° 32 ′ S, 55 ° 24 ′ W; 9 Nov. 1958; FCE 0339. – Canelones • 1 ♂; Ruta 11 Km 144; 34 ° 35 ′ 09 ″ S, 55 ° 50 ′ 23 ″ W; 26 Jun. 2010; F. Costa and F. Pérez-Miles leg.; FCE 1015 • 1 ♂; Piedras de Afilar; 34 ° 45 ′ 33 ″ S, 55 ° 31 ′ 32 ″ W; 19 – 26 Apr. 2010; M. González leg.; trampa pitfall; FCE 1021. – Maldonado • 1 ♀; Sierra de las Animas; 34 ° 42 ′ S, 55 ° 19 ′ W; 23 Feb. 1969; L. C. Zolessi leg.; FCE 0335 • 1 juv.; Sierra de las Animas; 21 Mar. 1971; FCE 0336 • 1 ♀; Sierra de las Animas; 34 º 42 ′ S, 55 º 19 ′ W; 21 Mar 1971; FCE 0338 • 2 ♀♀, 2 juvs; Sierra de las Animas; 2 Nov. 1969; L. C. Zolessi leg.; FCE 0342 • 1 ♀; Sierra de las Animas; 11 Feb. 1970; L. C. de Zolessi leg.; MNHN 373 • 1 ♂; Sierra de las Animas; 21 Mar. 1971; S. Etcheverrigaray leg.; MNHN 718. – Montevideo • 1 ♂; Prado, Liceo Bauzá; 34 ° 51 ′ S, 56 ° 12 ′ W; 19 Apr. 2002; A. Mignone leg.; FCE 0341.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE877FFB2EE01FEE2FDC0FC6F.taxon	description	The specimens registered for Argentina and reviewed by Ferretti et al. 2017 were not examined here. Despite this, they were included in the species distribution map. Description Male (FCE 0341) HABITUS. See Fig. 15 A. MEASUREMENTS. TBL 11, CL 5.7, CW 4.8, LL 0.6, LW 1.2, SL 3, SW 2.9. COLOR. Carapace, legs and sternum light brown (Fig. 15 A – B), abdomen gray. PROSOMA. Carapace and ocular arrangement as shown in Fig. 15 A. Eye tubercle: 1.4 long; 1.6 wide. Distance AME-ALE 0.8. Eye diameters: AME 0.3, ALE 0.4, PME 0.3, PLE 0.3. Thoracic fovea procurved. Labium and sternum without cuspules (Fig. 15 B). Basal segment of chelicerae with a prolateral row of 5 large teeth and retrolateral row with 9 small teeth (Fig 15 A), rastellum with 8 spines, distal spines are longer (Fig. 16 B). LEGS. Tibia and metatarsus I as shown in Fig. 15 H. Leg I with an apical branch of tibial apophysis with a short and triangular basal spine, and an apical branch with a conical spine twice the size of basal spine. Pseudoscopula: tarsus I divided into rows of thick hair; tarsus II – IV totally covered. PALP. Tibia with conspicuous retrolateral depression, with projection on basal portion and larger spines concentrated on basal and apical portions (Figs 15 G, 16 C); embolus with subapical torsion and presence of a small embolar tooth close to spermatic duct opening (Figs 15 D – F, 16 E – F). PALP AND LEG MEASUREMENTS. Palp = 9.3 (3, 1.6, 3.1, 1.6), I = 21.3 (5.9, 3.2, 4.3, 5, 2.9), II = 19.7 (5, 2.5, 3.4, 4.2, 2.6), III = 14. 9 (3.5, 2.3, 2.3, 4, 2.8), IV = 21.2 (5.4, 2.9, 4.5, 5.4, 3). SPINATION. Palp: Ti r 24, Ta d 0 - 0 - 4. Leg I: Fe d 1 - 1 - 2, Ti v 1 r- 1 r- 2 r, Mt 1 r- 2 r- 1 ap, Ta r 2 - 1 - 0. Leg II: Fe d 1 - 1 - 2, Ti v 0 - 2 r- 1 r- 1, Mt v 1 r- 1 r- 1 r- 2, Ta p 0 - 0 - 1, r 2 - 2 - 0. Leg III: Fe d 1 - 1 - 1, Pa d 1 - 1 - 0, p 3 - 5 - 8, r 0 - 0 - 2, Ti v 0 - 1 r- 0 - 2, p 1 - 1 - 4, r 1 - 1 - 2, Mt v 3 - 4 - 0 - 4, p 3 - 2 - 2, r 0 - 1 - 2, Ta p 0 - 4 - 8, r 0 - 4 - 8. Leg IV: Fe d 1 - 1 - 2, Pa p 16 - 3 - 0, Ti v 1 - 2 - 2, Mt v 1 - 2 - 1 - 3, Ta p 2 - 3 - 6, r 0 - 0 - 2. Female (FCE 0338) HABITUS. See Fig. 15 I. MEASUREMENTS. TBL 17.3, CL 7.5, CW 6.3, LL 1.2, LW 1.6, SL 4.4, SW 4.3. COLOR. Carapace, legs and sternum light brown (Fig. 15 I – J), abdomen gray. PROSOMA. Carapace and ocular arrangement as shown in Fig. 15 I. Eye tubercle: 2.2 long; 2.7 wide. Distance AME-ALE 1. Eye diameters: AME 0.4, ALE 0.6, PME 0.5, PLE 0.7. Thoracic fovea procurved. Labium with 4 – 6 cuspules (Fig. 15 J). Maxilla with 83 cuspules, distributed over the anterior ventral half (Fig. 15 J). Basal segment of chelicerae with a prolateral row of 5 large teeth and a retrolateral row with 7 small teeth, grouped at basal half. PALP AND LEG MEASUREMENTS. Palp = 12.2 (4.1, 2.6, 2.7, 2.8), I = 13.3 (4.2, 3, 2.9, 2.2, 1), II = 11.1 (3.4, 2.7, 2.3, 2, 1), III = 12 (3.3, 2.6, 1.7, 2.4, 2), IV = 15.8 (4.1, 3.4, 3.3, 3.2, 1.8). SPINATION. Palp: Fe p 0 - 0 - 2, Pa p 0 - 0 - 1, Ti p 7 - 8 - 11, r 3 - 10 - 13, Ta v 0 - 0 - 6, p 12 - 10 - 8, r 12 - 10 - 12. Leg I: Ti p 5 - 5 - 8, r 6 - 8 - 12, Mt p 11 - 8 - 10, r 9 - 8 - 7, Ta v 0 - 6 - 7, p 4 - 5 - 2, r 5 - 4 - 3. Leg II: Ti p 2 - 7 - 6, r 2 - 4 - 1, Mt p 10 - 9 - 7, r 4 - 5 - 3, Ta v 0 - 1 - 7, p 4 - 5 - 3, r 4 - 2 - 1. Leg III: Pa p 5 - 5 - 16, r 0 - 0 - 2, Ti p 5 - 7 - 10, r 3 - 7 - 10, Mt v 0 - 0 - 2, p 12 - 7 - 6, r 7 - 5 - 4, Ta v 0 - 6 - 22. Leg IV: Pa p 30 - 5 - 0, Ti v 0 - 1 - 1 - 2, Mt v 0 - 2 - 5 - 3, Ta v 1 - 9 - 14. SPERMATHECAE. Duct with basal portion shorter than apical portion and non-sclerotized spherical receptacles with evident granules (Fig. 15 K).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE877FFB2EE01FEE2FDC0FC6F.taxon	distribution	Distribution Uruguay and Argentina (Fig. 3 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE870FF8FED38FC3DFD4EFE83.taxon	description	urn: lsid: zoobank. org: act: D 3387 D 49 - 8 B 8 B- 42 C 0 - ADB 9 - 88 D 5 A 8 A 78 B 62 Figs 3 B, 17 A – L	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE870FF8FED38FC3DFD4EFE83.taxon	diagnosis	Diagnosis Males and females of Idiops duocordibus sp. nov. differ from the other Neotropical species by the light brown coxae and trochanters, contrasting with the brown body (Fig. 17 A – L). The male resembles that of I. rohdei by the short metatarsus I with prolateral curvature and with a slight prolateral projection on the apical half (Fig. 17 I), but differs by the tibial apophysis with a triangular apical branch twice the size of the basal branch (Fig. 17 G – H) and by the weakly curved embolus (Fig. 17 D). The female (Fig. 17 J – L) differs from those of the other species by having the spermathecae with bilobed receptacles in the shape of a heart (Fig. 17 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE870FF8FED38FC3DFD4EFE83.taxon	etymology	Etymology The specific epithet refers to the heart-shaped receptacles of the female genitalia.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE870FF8FED38FC3DFD4EFE83.taxon	materials_examined	Type material Holotype BRAZIL – Pará • ♂; Vitória do Xingu, Ilha Taboca; 3 ° 23 ′ 12.7 ″ S, 51 ° 57 ′ 26.2 ″ W; 3 Nov. 2000; F. Oliveira leg.; MPEG 0124. Paratypes BRAZIL – Pará • 1 ♂; Almeirim, Reserva de Itapeguara; 0 ° 32 ′ 04.9 ″ S, 52 ° 48 ′ 14.8 ″ W; Dec. 2001; MPEG 0122 • 1 ♀; Arapari, Rio Tocantins, left bank; 4 ° 52 ′ 23.6 ″ S, 49 ° 31 ′ 39.5 ″ W; 14 Mar. 1984; W. L. Overal leg.; MPEG 0123. Other material examined BRAZIL – Amazonas • 1 ♂; Manaus, Reserva Florestal Adolpho Ducke; 3 ° 0 ′ 27 ″ S, 59 ° 56 ′ 22.92 ″ W; 9 Sep. 1991; H. Höfer and T. Gasnier leg.; INPA 4592 • 1 ♂; Manaus, Reserva Florestal Adolpho Ducke; 14 – 24 Jul. 1991; A. D. Brescovit leg.; MCN 21485. – Pará • 2 ♂♂; Vitória do Xingu, Ilha Taboca; 3 ° 23 ′ 12.7 ″ S, 51 ° 57 ′ 26.2 ″ W; 23 Nov. 2000; F. Oliveira leg.; MPEG 0112, MPEG 0114.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE870FF8FED38FC3DFD4EFE83.taxon	description	Description Male (holotype MPEG 0124) HABITUS. See Fig. 17 A. MEASUREMENTS. TBL 10, CL 4.6, CW 4, LL 0.5, LW 0.7, SL 2.4, SW 2.2. COLOR. Carapace brown, light brown coxae and trochanter (Fig. 17 A – B). Abdomen dark gray. PROSOMA. Carapace and ocular arrangement as shown in Fig. 17 A. Eye tubercle: 0.68 long; 1.08 wide. AME-ALE distance 0.63. Eye diameters: AME 0.32, ALE 0.34, PME 0.13, PLE 0.22. Thoracic fovea procurved (Fig. 17 A). Labium and sternum without cuspules (Fig. 17 B). Basal segment of chelicerae with a prolateral row of 5 small teeth equally distributed, rastellum with 5 spines (Fig. 17 B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 17 G. Leg I with double tibial apophysis. Leg I tibial apophysis with apical branch twice the size of basal branch and with a conspicuous spine (Fig. 17 G – I). Pseudoscopula: tarsus I weakly covered (Fig. 17 G), tarsus II – IV totally covered. PALP. Tibia with thickened median portion and with larger spines concentrated in basal portion of retrolateral depression (Fig. 17 C), embolus elongated, tapered, and slightly curved, with torsion on apical portion (Fig. 17 D – F), keel along embolus length extending to apical portion (Fig. 17 D). PALP AND LEG MEASUREMENTS. Palp = 6.9 (2.3, 1.3, 2.4, 0.9), I = 13.4 (4.3, 1.9, 3, 2.9, 1.3), II = 11.3 (3.5, 1.8, 2.5, 2.5, 1), III = 10 (2.7, 1.5, 1.9, 2.6, 1.3), IV = 13.6 (3.9, 1.9, 3.5, 3.1, 1.2). SPINATION. Palp: Ti r 39, Ta d 0 - 0 - 3. Leg I: Pa v 0 - 1 - 2, r 1 - 2 - 3, Ti v 1 - 2 - 3, r 1 - 2 - 6, Mt v 1 - 4 - 7, p 0 - 0 - 2, p 0 - 1 - 1, r 4 - 4 - 5, Ta v 0 - 1 - 0, p 0 - 2 - 3, p 1 - 2 - 3, r 4 - 4 - 3. Leg II: Pa v 0 - 0 - 3, d 0 - 0 - 1, Ti v 2 - 3 - 7, d 3 - 4 - 8, Mt v 4 - 6 - 8, d 5 - 6 - 7, p 1 - 2 - 4, r 0 - 2 - 3, Ta p 1 - 3 - 3, r 2 - 2 - 3. Leg III: Pa v 0 - 0 - 2, Ti v 1 - 2 - 3 r 0 - 1 - 0, Mt v 3 - 6 - 7, d 0 - 0 - 2, p 2 - 2 - 3, r 1 - 2 - 4, Ta p 3 - 4 - 4, r 1 - 3 - 3. Leg IV: Pa v 0 - 0 - 3, Ti v 1 - 2 - 2, Mt v 1 - 4 - 8, p 0 - 0 - 1, r 0 - 2 - 3, Ta v 2 - 4 - 5, p 0 - 1 - 2, r 2 - 3 - 2. Female (paratype MPEG 0123) HABITUS. See Fig. 17 J. MEASUREMENTS. TBL 9.9, CL 5.5, CW 4,8, LL 0.9, LW 1.2, SL 3.4, SW 2.9. COLOR. Brown carapace and trochanter, remainder of leg light brown (Fig. 17 J – L). Abdomen dark gray. PROSOMA. Carapace and ocular arrangement as shown in Fig. 17 J. Eye tubercle: 0.7 long; 1.1 wide. AME-ALE distance 0.9. Eye diameters: AME 0.3, ALE 0.3, PME 0.2, PLE 0.4. Thoracic fovea procurved (Fig. 17 J). Labium with with 13 cuspules (Fig. 17 K). Maxilla with 117 cuspules, distributed throughout the maxillae, with larger spines on anterior half (Fig. 17 K). Basal segment of chelicerae with a prolateral row of 6 large teeth and 2 retrolateral small teeth, grouped in basal half, rastellum with 16 – 18 short and thick spines (Fig. 17 K). PALP AND LEG MEASUREMENTS. Palp = 6.4 (2.3, 1.2, 1.6, 1.3), I = 7.4 (2.5, 1.5, 1.6, 1, 0.8), II = 6.5 (2.3, 1.6, 1.2, 0.9, 0.5), III = 7 (1.9, 1.6, 1.3, 1.4, 0.8), IV = 9.5 (2.6, 1.7, 2.1, 2.2, 0.9). SPINATION. Palp: Pa p 0 - 0 - 1, Ti p 4 - 7 - 7, r 4 - 6 - 8, Ta p 10 - 8 - 7, r 10 - 7 - 9. Leg I: Ti p 4 - 4 - 5, r 3 - 5 - 8, Mt p 8 - 7 - 8, r 5 - 5 - 6, Ta p 3 - 4 - 2, r 5 - 4 - 0. Leg II: Ti v 1 - 1 - 2, p 3 - 3 - 4, r 0 - 1 - 3, Mt v 1 - 1 - 2, p 6 - 7 - 9, r 2 - 2 - 1, Ta p 2 - 3 - 3, r 2 - 1 - 0. Leg III: Pa p 4 - 5 - 10, Ti v 0 - 0 - 2, p 2 - 4 - 6, r 4 - 4 - 6, Mt v 1 - 1 - 2, d 0 - 0 - 2, p 3 - 3 - 3, r 0 - 2 - 1. Leg IV: Ti v 1 - 1 - 2, Mt v 1 - 1 - 3, vp 0 - 0 - 2, Ta v 0 - 1 - 2, p 1 - 1 - 2. SPERMATHECAE. Single sclerotized base that is divided into two divergent ducts, receptacula strongly sclerotized (Fig. 17 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE870FF8FED38FC3DFD4EFE83.taxon	distribution	Distribution Brazil. Distributed in phytophysiognomies in the Amazon, with records for the North region (western Amazonas and northwestern Pará) (Fig. 3 B)	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84DFF8CEE26FE59FAFDFCD9.taxon	description	Figs 3 D, 5 B, 18 – 19	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84DFF8CEE26FE59FAFDFCD9.taxon	diagnosis	Diagnosis Males of Idiops germaini differ from those of other Neotropical species of Idiops by the long and slender palpal tibia, with the retrolateral depression restricted to the apical portion (Figs 18 C, 19 D), and by having the tibial apophysis reduced to two long spines inserted on a low tubercle (Figs 18 G – I, 19 C). Females with spermathecae composed of short ducts and fully sclerotized receptacles, almost twice the diameter of the duct (Fig. 18 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84DFF8CEE26FE59FAFDFCD9.taxon	materials_examined	Type material Holotype BRAZIL – Rio de Janeiro • ♂; Rio de Janeiro; P. Germain leg.; MNHN 417. Paratype BRAZIL – Rio de Janeiro • 1 ♀; same collection data as for holotype; MNHN 9977. Other material examined BRAZIL – Rio de Janeiro • 1 ♂ (SEM); Nova Iguaçu, Parque Municipal de Nova Iguaçu; 22 ° 45 ′ 35 ′′ S, 43 ° 27 ′ 6 ′′ W; 20 May 2004; R. L. C. Baptista leg.; MNRJ • 1 ♂; Nova Iguaçu, Parque Municipal de Nova Iguaçu; 20 Jun. 2004; R. L. C. Baptista leg.; MNRJ • 1 ♂; Nova Iguaçu, Parque Municipal de Nova Iguaçu; Jan. 2001; R. L. C. Baptista leg.; MNRJ • 1 ♀; Nova Iguaçu, Parque Municipal de Nova Iguaçu; 22 Jan. 2005; D. R. Pedroso leg.; MNRJ • 1 ♀; Paraty, Parque Nacional da Serra da Bocaina, Trilha da Cachoeira Sete Quedas; 23 ° 2 ′ 30 ″ S, 44 ° 39 ′ 42 ″ W; 24 – 26 Mar. 2019; R. F. Ferreira, A. Galleti, I. Meirelles and R. Indicatti leg.; CAD 832 • 1 ♀; Angra dos Reis, Distrito de Serra DʼAgua; 23 ° 0 ′ 25 ″ S, 44 ° 19 ′ 4 ″ W; 25 Nov. 2010; C. A. S. Souza et al. leg.; CHNUFPI 0040 • 1 ♀; Mata da Tijuca; 13 Aug. 1977; M. Júlio leg.; UFPB Ar 418.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84DFF8CEE26FE59FAFDFCD9.taxon	description	Description Male (holotype MNHN 417) HABITUS. See Fig. 18 A. MEASUREMENTS. TBL 12, CL 6.8, CW 6.1, LL 0.8, LW 1.1, SL 3.8, SW 3.3. COLOR. Brown carapace and legs, brownish sternum and coxae (Fig. 18 A – B), gray abdomen. PROSOMA. Carapace and ocular arrangement as shown in Fig. 18 A. Eye tubercle: 1.4 long; 1.4 wide. Distance AME-ALE 0.6. Eye diameters: AME 0.4, ALE 0.3, PME 0.2, PLE 0.4. Thoracic fovea procurved (Fig. 18 A). Labium and sternum without cuspules (Fig. 18 B). Basal segment of chelicerae with a prolateral row of 8 teeth, seven larger and one small, and a retrolateral row with 9 small teeth, grouped in basal half (Fig. 19 A), with distal rastellum with 10 spines, with same size (Fig. 19 B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 18 G. PALP. Tibia with a shallow retrolateral depression and spines concentrated at basal half of depression (Figs 18 C, 19 D); elongated embolus with median curvature (Fig. 18 E – F) and a small distal embolar tooth close to sperm duct opening (Fig. 19 E – F). PALP AND LEG MEASUREMENTS. Palp = 12 (4.4, 2, 4.2, 1.4), I = 22.9 (7.2, 3.4, 5.4, 4.8, 2.1), II = 19.9 (6.4, 2.9, 4.4, 4.4, 1.8), III = 17.2 (4.6, 2.6, 3.3, 4.7, 2), IV = 24 (6.7, 3.4, 5.6, 5.9, 2.4). SPINATION. Palp: Ti r 3 - 4, Ta d 0 - 0 - 4. Leg I: Fe d 1 - 2 - 2, Ti p 0 - 0 - 1, r 0 - 2 - 2, Mt p 0 - 0 - 2, r 2 - 2 - 4, Ta p 1 - 1 - 1, r 2 - 1 - 2. Leg II: Fe d 1 - 2 - 2, Ti v 1 - 1 - 3 ap, Mt p 0 - 1 - 2, r 2 - 2 - 2, Ta p 0 - 1 - 1, r 2 - 2 - 4. Leg III: Fe d 1 - 1 - 1, Pa p 2 - 5 - 6, r 0 - 0 - 3, Ti v 1 - 2 - 2, p 1 - 2 - 4, r 0 - 1 - 2, Mt vv 2 - 1 - 4 ap, p 3 - 2 - 2, r 2 - 1 - 1, Ta p 2 - 3 - 3, r 1 - 2 - 3. Leg IV: Fe d 1 - 1 - 2, Pa p 13 - 3 - 0, Ti v 1 - 1 - 3, Mt v 1 - 1 - 1 - 3, Ta p 2 - 2 - 4, r 0 - 0 - 2. Female (paratype MNHN 9977) HABITUS. See Fig. 18 J. MEASUREMENTS. TBL 16.6, CL 9.1, CW 6.7, LL 1.5, LW 1, SL 4.8, SW 4. COLOR. Brown carapace and legs, brownish sternum and coxae (Fig. 18 J – K), gray abdomen. PROSOMA. Carapace and ocular arrangement as shown in Fig. 18 J. Eye tubercle: 2.3 long; 2.8 wide. Distance AME-ALE 0.9. Eye diameters: AME 0.3, ALE 0.5, PME 0.3, PLE 0.5. Thoracic fovea procurved (Fig. 18 J). Labium with 2 cuspules (Fig. 18 K). Maxilla with 28 cuspules, with larger cuspules concentrated in anterior prolateral and retrolateral extremities (Fig. 18 K). Basal segment of chelicerae with a prolateral row of 6 large teeth and a retrolateral row with 13 small teeth, grouped in basal half, rastellum with 14 spines, distal ones longer (Fig. 18 K). PALP AND LEG MEASUREMENTS. Palp = 11.9 (4, 2.6, 2.6, 2.7), I = 13.3 (4.5, 2.9, 2.7, 2.2, 1), II = 11.8 (3.8, 2.7, 2.2, 2, 1), III = 12.9 (3.5, 2.9, 1.9, 2.6, 2), IV = 17.6 (4.8, 3.5, 3.7, 3.5, 2.1). SPINATION. Palp: Pa p 0 - 0 - 1, Ti p 4 - 9 - 11, r 4 - 7 - 13, Ta v 0 - 0 - 6, p 14 - 9 - 8, r 11 - 11 - 10. Leg I: Ti p 3 - 8 - 11, r 3 - 7 - 15, Mt p 11 - 8 - 6, r 11 - 7 - 9, Ta v 0 - 0 - 6, p 5 - 4 - 2, r 6 - 5 - 0. Leg II: Ti p 1 - 3 - 6, r 0 - 1 - 1, Mt p 10 - 10 - 10, r 5 - 4 - 2, Ta v 0 - 0 - 4, p 5 - 5 - 4, r 3 - 2 - 0. Leg III: Pa p 3 - 5 - 7, r 0 - 0 - 2, Ti p 4 - 4 - 4, r 0 - 3 - 4, Mt v 1 p- 0 - 0 - 2, p 5 - 0 - 3, r 5 - 1 - 1, Ta v 0 - 2 - 7. Leg IV: Pa p 30 - 5 - 0, Ti v 0 - 1 - 2, Mt v 1 - 1 - 1 - 3 ap, Ta v 0 - 2 - 6. SPERMATHECAE. Ducts with translucent basal half and sclerotized apical half and spherical receptacula (Fig. 18 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84DFF8CEE26FE59FAFDFCD9.taxon	distribution	Distribution Brazil. Found in Atlantic Forest phytophysiognomies, with records for the state of Rio de Janeiro (Fig. 3 D).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84EFF88EDEAFC86FC8AFD4B.taxon	description	urn: lsid: zoobank. org: act: A 7664 A 49 - 43 C 0 - 4157 - BC 48 - B 98 BFB 58252 B Figs 3 C, 20 – 21	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84EFF88EDEAFC86FC8AFD4B.taxon	diagnosis	Diagnosis The male of Idiops guri sp. nov. differs from those of other Neotropical species by having the palpal tibia with the retrolateral depression shallow and delimited by spines of decreasing lengths towards the apical portion (Figs 20 C, 21 D) and by the presence of a hook-shaped projection near the sperm duct opening in retroventral view (Fig. 21 E – F). The female differs from the other species by the horseshoe-shaped spermathecae, with ducts curved inward and with sclerotization at the transition between the duct and the receptacle, and oval and weakly sclerotized receptacles (Fig. 20 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84EFF88EDEAFC86FC8AFD4B.taxon	etymology	Etymology The specific epithet is a tribute to southern Brazil, the region where the species is distributed. The word ʻguriʼ, which is of Tupi-Guarani origin, is commonly used in the region to refer to a child or a lad. It also alludes to the tiny size of the specimens.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84EFF88EDEAFC86FC8AFD4B.taxon	materials_examined	Type material Holotype BRAZIL – Rio Grande do Sul • ♂; São Francisco de Paula, Cento de Pesquisas e Conservação da Natureza Pró Mata; 29 ° 27 ′ – 29 ° 35 ′ S, 50 ° 08 ′ – 50 ° 15 ′ W; 1 May 2001; R. Ott leg.; MCN 39594. Paratypes BRAZIL – Paraná • 1 ♂; Londrina, Parque dos Godoy; 23 ° 26 ′ S, 51 ° 15 ′ W; 5 Jan. 1999; J. Lopes and I. M. Madri leg.; MCTP 11840. – Santa Catarina • 1 ♂; Chapecó, Floresta Nacional de Chapecó; 27 ° 06 ′ 10.5 ″ S, 52 ° 46 ′ 48.8 ″ W; 10 Mar. 2004; M. Scartezini leg.; IBSP 126721. – Rio Grande do Sul • 1 ♂; Viamão, Parque Estadual de Itapuã; 30 ° 22 ′ 6 ″ S, 50 ° 59 ′ 52 ″ W; 28 May 2004; A. C. K. Ferreira et al. leg.; MCTP 16937. Other material examined BRAZIL – Paraná • 2 ♂♂ (SEM); Cornélio Procópio, Parque Estadual Mata São Francisco; 28 ° 08 ′ 47.3 ″ S, 50 ° 34 ′ 19.5 ″ W; 2009; J. L. Chavari leg.; IBSP 220523 • 1 ♂; Cornélio Procópio, Parque Estadual Mata São Francisco; 8 May 2009; N. G. Cipola leg.; IBSP 150273 • 1 ♂; Londrina, Parque dos Godoy; 23 ° 26 ′ S, 51 ° 15 ′ W; 13 Apr. 1999; J. Lopes and I. M. Madri leg.; MCTP 11815 • 1 ♂; Londrina, Parque dos Godoy; 16 Mar. 1999; J. Lopes and I. M. Madri leg.; MCTP 11816 • 2 ♂♂; same collection data as for preceding; MCTP 11820 • 1 ♂; Londrina, Parque dos Godoy; 30 Mar. 1999; J. Lopes and I. M. Madri leg.; MCTP 11817 • 1 ♂; Ponta Grossa, Parque Estadual de Vila Velha; 25 ° 14 ′ 17 ″ S, 50 ° 0 ′ 39 ″ W; 22 Nov. 1986; Equipe Profaupar leg.; MCN 20668 • 2 ♂♂, 1 juv.; Três Barras do Paraná, Foz do Córrego Três Barras; 25 ° 25 ′ 8 ″ S, 53 ° 10 ′ 51 ″ W; 24 Feb. – 24 Mar. 1993; A. B. Bonaldo leg.; MCN 23420. – Santa Catarina • 1 ♂; Chapecó, Floresta Nacional de Chapecó; 27 ° 06 ′ 10.5 ″ S, 52 ° 46 ′ 48.8 ″ W; 10 Mar. 2004; M. Scartezini leg.; IBSP 126735 • 2 ♂♂; same collection data as for preceding; IBSP 126732 • 2 ♂♂; same collection data as for preceding; IBSP 126729 • 8 ♂♂; same collection data as for preceding; IBSP 126723 to 126724, IBSP 126726 to 126728, IBSP 126730 to 126731, IBSP 126733. – Rio Grande do Sul • 2 ♀♀; São Francisco de Paula; Potreiro Velho; 29 ° 26 ′ 52 ″ S, 50 ° 35 ′ 2 ″ W; Feb. 2002; L. Bertocello; MCTP 17532, MCTP 23469 • 1 ♀; São Francisco de Paula, Centro de Pesquisas e Conservação da Natureza Pró-Mata; 29 ° 27 ′ – 29 ° 35 ′ S, 50 ° 08 ′ – 50 ° 15 ′ W; 18 May 2002; R. Ott leg.; MCTP 18549 • 2 ♂♂; Itaara; 29 ° 36 ′ 36 ″ S, 53 ° 45 ′ 54 ″ W; Apr. 2017; A. A. Lise leg; MCTP 20798 to MCTP 20799 • 1 ♂, 1 juv.; São Francisco de Paula, Centro de Pesquisas e Conservação da Natureza Pró-Mata; 1 May 2001, R. Ott leg.; MCN 39594 a • 2 ♂♂, São Francisco de Paula, Centro de Pesquisas e Conservação da Natureza Pró-Mata; 3 Feb. 2001; R. Ott leg.; MCN 39593 • 1 ♂; Derrubadas, Parque Estadual do Turvo; 27 ° 8 ′ 44 ″ S, 53 ° 53 ′ 10 ″ W; 7 May 2004; R. Ott leg.; MCN 40380 • 3 ♂♂; Morrinhos do Sul, Tres Passos; 29 ° 21 ′ 54 ″ S, 49 ° 56 ′ 6 ″ W; 1 Nov. 2006; A. Gonçalves et al. leg.; MCN 52357 to 52358 • 1 ♂; Dom Pedro de Alcântara; 29 ° 22 ′ 8 ″ S, 49 ° 51 ′ 0 ″ W; 25 Apr. 2006; A. Gonçalves et al. leg.; MCN 52356 • 2 ♂♂; Viamão, Parque Estadual de Itapuã; 30 ° 22 ′ 6 ″ S, 50 ° 59 ′ 52 ″ W; 15 Apr. 2004; A. C. K. Ferreira et al. leg.; MCTP 16939, MCTP 16946 • 2 ♂♂; same collection data as for preceding; MCTP 16948 • 14 ♂♂; Viamão, Parque Estadual de Itapuã; 30 Apr. 2004; A. C. K. Ferreira et al. leg.; MCTP 16638 • 12 ♂♂; same collection data as for preceding; MCTP 16936 • 1 ♂; Viamão, Parque Estadual de Itapuã; 18 Apr. – 8 May 2007; R. Moraes leg.; MCTP 29969 • 2 ♂♂; Porto Alegre, Reserva Biológica de Lami; 30 ° 15 ′ S, 51 ° 05 ′ W; 23 Mar. – 2 Apr. 2006; MCN 46338 • 1 ♂; Porto Alegre, Reserva Biológica de Lami; 23 Mar. – 12 Apr. 2006; R. Moraes leg.; MCN 56824 • 4 ♂♂; Porto Alegre, Jardim Botânico; 5 Mar. – 5 Apr. 2013; G. O. Silva leg.; MCN 49909 to 49911; MCN 49913 • 1 ♂; Herval; 32 ° 1 ′ 26 ″ S, 53 ° 23 ′ 45 ″ W; 27 – 28 Apr. 2013; Equipe Sisbiota leg.; MCN 48527.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84EFF88EDEAFC86FC8AFD4B.taxon	description	Description Male (holotype MCN 39594) HABITUS. See Fig. 20 A. MEASUREMENTS. TBL 5.3, CL 2.5, CW 2.4, LL 0.4, LW 0.6, SL 1.4, SW 1.3. COLOR. Yellowish brown carapace and legs, gray abdomen (Fig. 20 A – B). PROSOMA. Carapace and ocular arrangement as shown in Fig. 20 A. Eye tubercle: 0.4 long; 0.5 wide. AME-ALE distance 0.3. Eye diameters: AME 0.1, ALE 0.2, PME 0.1, PLE 0.12. Thoracic fovea procurved (Fig. 20 A). Labium and sternum without cuspules (Fig. 20 B). Basal segment of chelicerae with a prolateral row of 5 small teeth equally distributed, rastellum with 11 – 12 spines, distals largest (Fig. 21 A – B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 20 G. Tibial apophysis of leg I with short basal branch with small triangular spine and apical branch twice as large as basal branch (Fig. 20 G – I), with elongated spine in digitiform shape (Fig. 21 C). Pseudoscopula: tarsus I – IV totally covered. PALP. Tibia with larger spines arranged on basal half of retrolateral depression (Fig. 20 C), embolus with keel in retrolateral view, embolus with subapical torsion, followed by lateral lamella close to opening of sperm duct (Figs 20 D – F, 21 E – F). PALP AND LEG MEASUREMENTS. Palp = 3.8 (1.2, 0.6, 1.4, 0.6), I = 7.5 (2.2, 1.2, 1.7, 1.4, 1), II = 6.8 (2.2, 1, 1.4, 1.2, 1), III = 6.2 (1.7, 1, 1, 1.5, 1), IV = 8 (1.9, 1, 2, 1.9, 1.2). SPINATION. Palp: Ti r 13. Leg I: Pa v 0 - 0 - 1, Ti r 0 - 1 - 2 Mt v 0 - 0 - 1, p 0 - 0 - 1, r 1 - 1 - 2, Ta p 0 - 0 - 1 r 0 - 1 - 0. Leg II: Pa v 0 - 0 - 3, Ti v 1 - 1 - 3, p 0 - 0 - 2, Mt v 1 - 1 - 3, p 0 - 0 - 1, Ta p 0 - 0 - 1. Leg III: Pa p 1 - 2 - 2, Ti v 0 - 0 - 2, p 0 - 1 - 1, r 0 - 0 - 1, Mt v 0 - 1 - 2, p 0 - 1 - 2, r 0 - 1 - 2, d 0 - 1 - 2. Leg IV: Pa 0 - 0 - 1, Ti v 1 - 1 - 2, p 0 - 0 - 1, r 0 - 0 - 1, Mt v 0 - 1 - 2, p 0 - 0 - 1, r 0 - 0 - 2, Ta p 0 - 0 - 1, r 0 - 0 - 1. Female (MCTP 23469) HABITUS. See Fig. 20 J. MEASUREMENTS. TBL 8.4, CL 4.2, CW 3.7, LL 0.7, LW 0.9, SL 2.5, SW 2.5. COLOR. Brown carapace and legs, gray abdomen (Fig. 20 J – K). PROSOMA. Carapace and ocular arrangement as shown in Fig. 20 J. Eye tubercle: 0.5 long; 0.9 wide. AME-ALE distance 0.7. Eye diameters: AME 0.2, ALE 0.3, PME 0.2, PLE 0.3. Thoracic fovea procurved (Fig. 20 J). Labium with 4 cuspules (Fig. 20 K). Maxilla with 29 cuspules, distributed over anterior ventral half, with 8 large cuspules at anterior ventral retrolateral end and 5 large cuspules at anterior ventral prolateral end (Fig. 20 K). Basal segment of chelicerae with a prolateral row of 5 large teeth. Rastellum with 11 – 12 thick spines, distals largest. PALP AND LEG MEASUREMENTS. Palp = 6.9 (2.5, 1.3, 1.5, 1.6), I = 7.7 (2.5, 1.6, 1.8, 1, 0.8), II = 6.6 (2.2, 1.4, 1.2, 1.1, 0.7), III = 7.3 (2, 1.6, 1.2, 1.5, 1), IV = 9.7 (2.6, 2, 1.8, 2, 1.3). SPINATION. Palp: Ti r 5 - 4 - 5, p 2 - 4 - 6, Ta r 4 - 6 - 6, p 7 - 6 - 5. Leg I: Mt r 3 - 4 - 5, p 2 - 3 - 3, Ta v 0 - 0 - 3, r 5 - 4 - 6, p 2 - 4 - 2. Leg II: Ti r 2 - 3 - 3, p 2 - 4 - 2, Mt r 6 - 4 - 5, p 5 - 5 - 5, Ta v 0 - 0 - 3, r 3 - 2 - 1, p 2 - 4 - 2. Leg III: Pa p 3 - 5 - 8, Ti p 0 - 2 - 3, Mt d 2 - 4 - 4, v 1 - 2 - 2, p 4 - 2 - 1, Ta v 0 - 1 - 3, p 0 - 2 - 0. Leg IV: Pa p 12 - 0 - 0, Ti v 1 - 1 - 1, Mt v 1 - 2 - 2, p 0 - 0 - 1, Ta v 0 - 3 - 4. SPERMATHECAE. Duct with translucent median portion and receptacle with evident granules and medial half slightly expanded (Fig. 20 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84EFF88EDEAFC86FC8AFD4B.taxon	distribution	Distribution Brazil. Found mainly in Atlantic Forest phytophysiognomies, with records for the South region (Paraná, Santa Catarina and Rio Grande do Sul) (Fig. 3 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84AFF87EE3BFD10FC5AFBEB.taxon	description	Figs 4 B, 5 C, 22	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84AFF87EE3BFD10FC5AFBEB.taxon	diagnosis	Diagnosis The female of Idiops harti differs from that of other species of the genus by having the spermathecae with short ducts (same length as the diameter of the receptacula) and a well-marked division between them, by having the receptacula shaped like a bean (Fig. 22) and by having only an internal row of large teeth on the chelicera (Fig. 5 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84AFF87EE3BFD10FC5AFBEB.taxon	materials_examined	Type material Holotype TRINIDAD AND TOBAGO • ♀; Trinidad; J. H. Hart leg.; BMNH 1893.3.25.1.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84AFF87EE3BFD10FC5AFBEB.taxon	description	Description Male Unknown. Female (holotype BMNH 1893.3.25.1) MEASUREMENTS. TBL 18.8, CL 12.2, CW 9.8, LL 0.8, LW 1.3, SL 5.8, SW 5.6. COLOR. Carapace and legs light brown. Abdomen brown. PROSOMA. Eye tubercle: 1.7 long; 1.1 wide. AME-ALE distance 0.7. Eye diameters: AME 0.44, ALE 0.4, PME 0.3, PLE 0.4. Thoracic fovea procurved with 7 cuspules. Maxilla with 104 cuspules, distributed through ventral area. Basal segment of chelicerae with a prolateral row of 6 large teeth and one small retrolateral tooth (Fig. 4 C). PALP AND LEG MEASUREMENTS. Palp = 10.6 (3.6, 2.4, 2.3, 2.3), I = 12.8 (4.3, 2.8, 2.9, 1.9, 0.9), II = 11.5 (3.9, 2.5, 2.3, 1.8, 1), III = 8.6 (2.4, 1.9, 1.5, 1.8, 1), IV = 15.8 (4.5, 2.9, 3.5, 3.3, 1.6). SPINATION. Palp: Fe p 0 - 0 - 2, Pa p 0 - 1 - 1, Ti p 6 - 5 - 9, r 3 - 6 - 8, Ta p 8 - 6 - 9, r 9 - 8 - 7. Leg I: Ti p 3 - 3 - 8, r 3 - 5 - 6, Mt p 6 - 4 - 4, r 5 - 5 - 3, Ta p 3 - 1 - 1, r 1 - 2 - 1. Leg II: Ti p 3 - 4 - 6, r 1 - 1 - 3, Mt p 6 - 5 - 6, r 2 - 2 - 4, Ta p 2 - 3 - 1, r 2 - 2 - 1. Leg III: Fe d 0 - 0 - 1, Pa p 3 - 5 - 9, r 0 - 1 - 0, Ti v 0 - 0 - 2, p 2 - 4 - 7, Mt v 0 - 0 - 2, p 2 - 1 - 3, r 1 - 2 - 1. Leg IV: Pa p 0 - 0 - 1, Ti v 1 - 1 - 2, r 1 - 1 - 1, Mt v 1 - 2 - 1 - 3. SPERMATHECAE. Short ducts, receptacula wider than long (Fig. 22 A).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE84AFF87EE3BFD10FC5AFBEB.taxon	distribution	Distribution Trinidad and Tobago. Known only from the type locality (Fig. 3 B).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE845FF85EDCBFBB4FDA1FCAC.taxon	description	urn: lsid: zoobank. org: act: 9 A 7 CB 56 E- 31 BD- 4122 - 81 D 0 - D 514069399 D 6 Figs 3 B, 23 A – I	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE845FF85EDCBFBB4FDA1FCAC.taxon	diagnosis	Diagnosis The male of Idiops mocambo sp. nov. differs from other Neotropical species by anterior region of the carapace in a pointed shape (Fig. 23 A), sternum with distinct black edges (Fig. 23 B) and by the apical branch of the tibial apophysis in rectangular shape (Fig. 23 G – H).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE845FF85EDCBFBB4FDA1FCAC.taxon	etymology	Etymology The specific epithet refers to the location where the holotype specimen was collected.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE845FF85EDCBFBB4FDA1FCAC.taxon	materials_examined	Type material Holotype BRAZIL – Pará • ♂; Belém, Mocambo; 1 ° 27 ′ 21 ″ S, 48 ° 30 ′ 14 ″ W; 4 Nov. 2002; A. B. Bonaldo leg.; MPEG 0110. Paratype BRAZIL – Amazonas • 1 ♂; Manaus, Reserva Florestal Adolpho Ducke; 3 ° 0 ′ 27 ″ S, 59 ° 56 ′ 22.92 ″ W; 9 Sep. 1991; H. Höfer and T. Gasnier leg.; INPA 4593. Other material examined BRAZIL – Amazonas • 1 ♂; Road Am- 010, Km 54; 3 ° 3 ′ 45 ″ S, 59 ° 59 ′ 19 ″ W; 6 – 10 Nov. 1997; J. Vidal et al. leg.; INPA 4594. – Pará • 1 ♂; Barcarena; 1 ° 30 ′ 21 ″ S, 48 ° 37 ′ 33 ″ W; MPEG 1106.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE845FF85EDCBFBB4FDA1FCAC.taxon	description	Description Male (holotype MPEG 0110) HABITUS. See Fig. 23 A. MEASUREMENTS. TBL 7.9, CL 3.8, CW 3, LL 0.5, LW 0.7, SL 1.9, SW 1.7. COLOR. Brown carapace and legs, except for coxae and trochanters, which are light brown (Fig. 23 A – B). PROSOMA. Carapace and ocular arrangement as shown in Fig. 23 A. Eye tubercle: 0.5 long; 0.9 wide. AME-ALE distance 0.5. Eye diameters: AME 0.2, ALE 0.3, PME 0.2, PLE 0.2. Thoracic fovea procurved (Fig. 23 A). Labium and sternum without cuspules (Fig. 23 B). Basal segment of chelicerae with a prolateral row of 5 large teeth and 2 small retrolateral teeth, grouped on basal half, rastellum with 16 – 18 short and thick spines. LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 23 G. Leg I with double tibial apophysis, apical branch twice the size of basal branch (Fig. 23 G – I). Pseudoscopula: tarsus I – IV totally covered. PALP. Tibia with spines distributed along margin of retrolateral depression, with large spines at apical and basal ends (Fig. 23 C); embolus with lamelliform apical half, keel in retrolateral view and torsion close to sperm duct opening (Fig. 23 D – F). PALP AND LEG MEASUREMENTS. Palp = 7.1 (2.5, 1, 2.6, 1), I = 11.7 (3.4, 1.9, 2.6, 2.6, 1.2), II = 10.3 (2.8, 1.5, 2.3, 2.5, 1.2), III = 9.8 (2.6, 1.4, 1.9, 2.6, 1.3), IV = 12.6 (3.2, 1.8, 3, 3.2, 1.4). SPINATION. Palp: Ti r 25, Ta 0 - 0 - 1. Leg I: Pa v 0 - 0 - 2, Ti v 0 - 0 - 2, r 1 - 2 - 3, Mt p 0 - 0 - 1, r 2 - 2 - 2, Ta p 1 - 1 - 1, r 1 - 1 - 1. Leg II: Ti v 2 - 2 - 3, Mt v 3 - 3 - 3, r 1 - 1 - 2, Ta p 0 - 2 - 0, r 1 - 1 - 0. Leg III: Ti v 0 - 2 - 3, Mt v 1 - 2 - 4, p 1 - 3 - 4, Ta p 0 - 2 - 1. Leg IV: Ti v 1 - 1 - 3, Mt v 1 - 2 - 4, p 1 - 3 - 6, Ta p 1 - 1 - 1.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE845FF85EDCBFBB4FDA1FCAC.taxon	distribution	Distribution Brazil. Distributed in phytophysiognomies in the Amazon, with records for the North region (eastern Amazonas and Pará) (Fig. 3 B).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE847FF82EE7FFC72FB7EFEA5.taxon	description	Figs 3 D, 24 A – L	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE847FF82EE7FFC72FB7EFEA5.taxon	diagnosis	Diagnosis Males of Idiops nilopolensis differ from those of other Neotropical species by the strong curvature of the median portion of the embolus in dorsal view (Fig. 24 D – F; also present in I. fuscus). Differs from I. fuscus by having the embolus with a thickened basal half and by the small embolar lamella (smaller than in I. fuscus) close to spermatic duct opening (Fig. 24 D – F). The female differs from those of other species by having the spermathecae with a translucent duct and without constriction between the duct and the sclerotized receptacles (Fig. 24 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE847FF82EE7FFC72FB7EFEA5.taxon	materials_examined	Type material Holotype BRAZIL – Rio de Janeiro • ♀; Rio de Janeiro; Nov. 1923; H. Blanc de Freitas leg.; MNRJ 10. Lost before the 2018 fire (Moreira et al. 2010: 34). Neotype (here designated) BRAZIL – Rio de Janeiro • ♂; Nova Iguaçu, Parque Municipal de Nova Iguaçu; 22 ° 45 ′ 35 ′′ S, 43 ° 27 ′ 6 ′′ W; 21 Jul. 2004; R. Baptista leg.; MNRJ. Remark: The type specimen of Idiops nilopolensis was lost in the MNRJ long before the 2018 fire. In accordance with the criteria of the ICZN Code (ICZN 1999), a neotype is designated here, because the type is lost and the original description is inadequate to stabilise the species. This neotype is based on a specimen collected near the type locality, in the state of Rio de Janeiro, Brazil. Other material examined BRAZIL – Rio de Janeiro • 1 ♀; same locality as for neotype; 1 Nov. 2004; MNRJ.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE847FF82EE7FFC72FB7EFEA5.taxon	description	Description Male (neotype MNRJ) HABITUS. See Fig. 24 A. MEASUREMENTS. TBL 16.9, CL 7.3, CW 6.4, LL 0.6, LW 1.2, SL 3.9, SW 3.5. COLOR. Body uniformely light brown (Fig. 24 A – B). PROSOMA. Carapace and ocular arrangement as shown in Fig. 24 A. Eye tubercle: 0.8 long; 1 wide. AME-ALE distance 0.9. Eye diameters: AME 0.4, ALE 0.4, PME 0.2, PLE 0.4. Thoracic fovea procurved (Fig. 24 A). Labium and sternum without cuspules (Fig. 24 B). Basal segment of chelicerae with a prolateral row of 7 large teeth and 3 small retrolateral teeth, grouped on basal half, rastellum with 16 – 18 spines, the distal ones longer. LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 20 G. Leg I with double tibial apophysis. Apical branch twice the size of basal branch and with a conspicuous spine (Fig. 24 H – I). Pseudoscopula: tarsus I – IV totally covered. PALP. Tibia with retrolateral conspicuous depression and spines concentrated at basal and apical portions (Fig. 24 C); embolus with basal torsion and opening of sperm duct in shape of a quill tip (Fig. 24 D – E). PALP AND LEG MEASUREMENTS. Palp = 11.8 (4.3, 2.2, 3.8, 1.5), I = 28.4 (8.5, 3.8, 6.6, 6.7, 2.8), II = 26.9 (7.8, 3.4, 6, 6.3, 3.1), III = 23.7 (6.1, 3.3, 4.3, 6.4, 3.6), IV = 32.6 (8.4, 3.7, 7.9, 8.6, 4). SPINATION. Palp: Ti r 20, Ta d 0 - 0 - 1. Leg I: Mt p 0 - 0 - 2, r 2 - 2 - 4, Ta p 2 - 2 - 2, r 3 - 3 - 4. Leg II: Mt p 0 - 0 - 2, r 0 - 3 - 3, Ta p 2 - 3 - 3, r 3 - 4 - 5. Leg III: Fe d 2 - 1 - 1, Pa p 2 - 4 - 5, Ti d 2 - 2 - 1, v 1 - 2 - 2, p 4 - 4 - 6, Mt d 2 - 2 - 5, v 3 - 4 - 5, p 3 - 4 - 6, r 2 - 2 - 4, Ta p 3 - 4 - 2, r 3 - 3 - 6. Leg IV: Ti v 1 - 2 - 3, p 0 - 0 - 1, Mt v 2 - 4 - 6, p 1 - 2 - 4, Ta p 1 - 4 - 6. Female (MNRJ) HABITUS. See Fig. 24 J. MEASUREMENTS. TBL 15.7, CL 6.2, CW 5.7, LL 0.9, LW 1.3, SL 3.9, SW 3.4. COLOR. Brown carapace and legs, brownish sternum and coxae (Fig. 24 J – K), gray abdomen. PROSOMA. Carapace and ocular arrangement as shown in Fig. 24 J. Eye tubercle: 1.2 long; 0.8 wide. AME-ALE distance 1. Eye diameters: AME 0.2, ALE 0.3, PME 0.2, PLE 0.4. Thoracic fovea procurved (Fig. 24 J). Labium with 2 cuspules (Fig. 24 K). Maxilla with 48 cuspules, distributed over anterior ventral half, with 6 large cuspules at anterior ventral retrolateral end and 6 large cuspules at anterior ventral prolateral end (Fig. 24 K). Basal segment of chelicerae with a prolateral row of 7 large teeth and 5 small retrolateral teeth, grouped on basal half, rastellum with 22 short and thick spines (Fig. 24 K). PALP AND LEG MEASUREMENTS. Palp = 11.4 (4, 2.4, 2.4, 2.6), I = 12.2 (3.7, 2.8, 2.6, 1.7, 1.4), II = 11.4 (3.6, 2.5, 2.3, 1.6, 1.4), III = 13.6 (4.1, 2.5, 2.2, 2.1, 2.7), IV = 15.7 (4.4, 3.1, 3.1, 3.2, 1.9). SPINATION. Palp: Ti p 4 - 10 - 12, r 4 - 6 - 8, Ta p 6 - 8 - 7, r 10 - 13 - 9. Leg I: Ti v 0 - 2 - 2, p 4 - 5 - 6, r 1 - 3 - 9, Mt v 2 - 2 - 3, p 6 - 6 - 9, r 4 - 3 - 5, Ta v 0 - 0 - 3, p 2 - 3 - 3, r 4 - 3 - 5. Leg II: Fe v 0 - 0 - 2, Pa v 0 - 0 - 1, Ti v 1 - 1 - 2, p 4 - 5 - 6, r 0 - 0 - 1, Mt v 1 - 2 - 1, p 4 - 6 - 9, r 1 - 2 - 1, Ta v 0 - 1 - 3, p 4 - 4 - 4, r 4 - 4 - 2. Leg III: Pa d 0 - 0 - 2, Ti p 2 - 3 - 2, r 0 - 0 - 3, Mt v 0 - 0 - 1, r 3 - 1 - 1, 4 - 4 - 3, Ta v 0 - 4 - 3, p 0 - 2 - 3. Leg IV: Fe d 0 - 0 - 2, v 0 - 0 - 3, Ti v 1 - 1 - 3, Mt v 3 - 4 - 6, p 1 - 2 - 3, Ta v 3 - 3 - 4, p 1 - 2 - 3. SPERMATHECAE. Short and narrow sclerotized base, ducts with same width as receptacles (Fig. 24 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE847FF82EE7FFC72FB7EFEA5.taxon	distribution	Distribution Brazil. Found in Atlantic Forest phytophysiognomie in the state of Rio de Janeiro (Fig. 3 D).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE840FF81EE3EFE79FCDDFD31.taxon	description	Figs 4 B, 25	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE840FF81EE3EFE79FCDDFD31.taxon	diagnosis	Diagnosis The female of Idiops opifex differs from that of all other Neotropical species of the genus, except I. rastratus and I. duocordibus sp. nov., by presenting cuspules on the entire maxillae ventral face. Differs from I. rastratus by the non-sclerotized spermathecae base (Fig. 25 A) and from I. duocordibus sp. nov. by the spherical receptacula (Fig. 25).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE840FF81EE3EFE79FCDDFD31.taxon	materials_examined	Type material Holotype FRENCH GUIANA • ♀; Cayenne; MNHN 5340. The holotype is damaged, apparently smashed.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE840FF81EE3EFE79FCDDFD31.taxon	description	Description Male Unknown. Female (holotype MNHN 5340) Measurements. TBL 11, CL 5.4, CW 5.2, LL 0.9, LW 1.3, SL 2.9, SW 3.3. COLOR. Carapace and legs brown. Abdomen dark gray. PROSOMA. Eye tubercle: 1.7 long; 1.8 wide. AME-ALE distance 1. Eye diameters: AME 0.3, ALE 0.3, PME 0.2, PLE 0.4. Thoracic fovea procurved. Labium with 23 cuspules. Sternum destroyed. Maxilla with 160 cuspules, distributed through ventral area. Basal segment of chelicerae with a prolateral row of 5 large teeth and 4 small retrolateral basal teeth. PALP AND LEG MEASUREMENTS. Palp = 10.6 (3.6, 2.3, 2.5, 2.2), I = 11.6 (3.8, 2.7, 2.6, 1.8, 0.7), II = 10 (3.4, 2.4, 2, 1.6, 0.6), III = 10.7 (3.3, 2.4, 1.8, 2, 1.2), IV = 14.1 (4.4, 2.8, 3, 3.7, 1.2). SPINATION. Palp: Fe p 0 - 0 - 3, Pa p 0 - 1 - 0, Ti p 7 - 9 - 9, Ta v 0 - 0 - 2, p 11 - 10 - 8, r 12 - 9 - 7. Leg I: Ti p 5 - 7 - 11, r 4 - 4 - 5, Mt p 9 - 7 - 6, r 9 - 5 - 6, Ta v 0 - 0 - 3, p 5 - 2 - 1, r 5 - 2 - 0. Leg II: Pa r 0 - 0 - 1, Ti p 3 - 5 - 5, r 2 - 3 - 3, Mt p 10 - 9 - 5, r 5 - 4 - 3, Ta p 3 - 3 - 1, r 3 - 1 - 0. Leg III: Pa p 2 - 3 - 9, r 0 - 0 - 1, Ti v 0 - 0 - 2, p 4 - 4 - 10, r 3 - 4 - 8, Mt v 0 - 0 - 2, p 4 - 4 - 6, r 2 - 0 - 0, Ta v 0 - 0 - 6. Leg IV: Pa p 8 - 2 - 0, Mt v 1 - 1 - 1 - 3, Ta v 0 - 0 - 6. SPERMATHECAE. Duct length similar to diameter of spherical receptacles, close to each other, with basal half thicker than apical half and with sclerotization at transition between duct and receptacle (Fig. 25).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE840FF81EE3EFE79FCDDFD31.taxon	distribution	Distribution French Guyana. Know only from type locality (Fig. 4 B).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE843FF9EEE35FCEFFE38FC8E.taxon	description	Figs 3 B, 26	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE843FF9EEE35FCEFFE38FC8E.taxon	diagnosis	Diagnosis The male of Idiops petiti differs from that of other Neotropical species, except I. carajas, by having the palpal tibia with spines concentrated in the basal half of the retrolateral depression (Fig. 26 C), the tibial apophysis with a narrow apical branch and rectangular in shape (Fig. 26 G – H) and by the presence of a lateral lamella that extends along the median portion of the embolus (Fig. 26 E – F). Differs from I. carajas by having the subapical portion of the embolus thin and straight (Fig. 26 E – F) and the metatarsus of the leg I slightly curved and with a small prolateral projection on the apical half (Figs 26 I). Females are distinguished from congeners, except I. carajas, by having the spermathecae with a large sclerotized trapezoidal base and V-shaped ducts (Fig. 26 L). Differs from I. carajas by its large oval-shaped receptacula (Fig. 26 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE843FF9EEE35FCEFFE38FC8E.taxon	materials_examined	Type material Holotype of Acanthodon petitii Guérin, 1838 BRAZIL – Pará • ♀; Santarém; BMNH 1890.7.1.320. Holotype of Acanthodon santaremia O. Pickard-Cambridge, 1896 BRAZIL – Pará • juv.; Santarém; Mar. 1896; O. P. - Cambridge leg.; BMNH 1896.12.13.66. Holotype of Idiops crulsi Mello-Leitão, 1930 BRAZIL – Pará • ♀; Oriximná, Rio Cuminá; G. Cruls leg.; MNRJ 0007. Lost in the fire of 2018.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE843FF9EEE35FCEFFE38FC8E.taxon	discussion	The type specimen of Idiops petiti was originally deposited in a dry collection and subsequently rehydrated and stored in alcohol. Although clearly an adult female, the specimen has lost many legs and the spermathecae, because the abdomen was stuffed with cotton. This prevented a more detailed description. The type specimen of I. santaremius was examined and recognized as a juvenile of I. petiti.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE843FF9EEE35FCEFFE38FC8E.taxon	materials_examined	Other material examined BRAZIL – Amazonas • 2 ♂♂; Manaus, Fazenda Esteio; 2 ° 23 ′ 3.00 ″ S, 59 ° 51 ′ 15.00 ″ W; 6 Nov. 1985; B. C. Klein leg.; INPA 4590 to 4591 • 1 ♂; Benjamin Constant; 4 ° 22 ′ 58 ″ S, 70 ° 1 ′ 51 ″ W; 2014; P. S. Pompeu leg.; IBSP 243961 • 1 ♂; Jutaí, near the Rio Jutaí; 5 º 38 ′ 21.7 ″ S, 69 º 10 ′ 58.8 ″ W; 14 – 19 Mar. 2006; M. S. Hoogmoed leg.; MPEG 2579. – Pará • 2 ♂♂; Belterra, Flona Tapajós, Km 83; 3 ° 31 ′ 1 ″ S, 55 ° 4 ′ 23 ″ W; 2010; J. L. Freitas leg.; IBSP 218829, IBSP 218868 • 1 ♂; Almeirim, Jari; 1 ° 1 ′ 33.122 ″ S, 52 ° 34 ′ 2.785 ″ W; MPEG 7588 • 1 ♂; Senador José Porfirio; Trilha do Censo, Margem Direita, Rio Xingu; 2 ° 35 ′ 27 ″ S, 51 ° 57 ′ 14 ″ W; 25 Feb. 2001; MPEG 0113 • 1 ♂; Senador José Porfirio; Trilha do Acampamento, Margem Direita, Rio Xingu; 25 Feb. 2001; MPEG 0116 • 1 ♂; Jacareacanga, UHN de São Manoel; 9 ° 13 ′ 32 ″ S, 56 ° 59 ′ 56 ″ W; 16 Feb. 2009; W. U. Prado leg.; UFMG 3205 • 1 ♂; Jacareacanga; 21 Feb. 2009; W. U. Prado leg.; UFMG 3206. – Rondônia • 1 ♀; Monte Negro, LC 25, Km 10; 10 ° 14 ′ 49 ″ S, 63 ° 24 ′ 16.8 ″ W; 19 Dec. 2013; P. H. Martins leg.; UFMG 24031.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE843FF9EEE35FCEFFE38FC8E.taxon	description	Description Male (MPEG 0116) HABITUS. See Fig. 26 A. MEASUREMENTS. TBL 17.2, CL 7.4, CW 6.7, LL 0.9, LW 1.4, SL 4, SW 3.6. COLOR. Carapace and legs reddish brown, with yellowish coxae, brownish sternum; abdomen grey (Fig. 26 A – B) PROSOMA. Carapace and ocular arrangement as shown in Fig. 26 A. Eye tubercle: 0.7 long; 1.3 wide. AME-ALE distance 0.9. Eye diameters: AME 0.4, ALE 0.4, PME 0.2, PLE 0.4. Thoracic fovea procurved (Fig. 26 A). Labium and sternum without cuspules (Fig. 26 B). Basal segment of chelicerae with a prolateral row of 8 large teeth and 4 small retrolateral teeth, grouped in basal half, rastellum presenting 12 – 13 spines of same size. LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 26 G. Leg I with double tibial apophysis. Apical branch twice the size of basal branch and with a conspicuous spine (Fig. 26 H – I). Pseudoscopula: tarsus I – IV totally covered. PALP. Elongated palpal bulb with slightly curved embolus and without torsion of subapical portion (Fig. 26 D – F). PALP AND LEG MEASUREMENTS. Palp = 12 (3.8, 3.3, 3.21, 1.7), I = 22 (6.8, 3.5, 5.1, 4.8, 1.8), II = 18.9 (6, 3, 4.4, 3.8, 1.7), III = 17 (4.7, 2.9, 3, 4.3, 2.1), IV = 24.2 (6.9, 3.6, 5.9, 5.1, 2.7). SPINATION. Palp: Ti r 19, Ta d 0 - 0 - 4. Leg I: Fe d 1 - 2 - 1, Pa v 0 - 1 - 5, Ti v 10 - 15 - 16, p 0 - 1 - 0, Mt v 6 - 8 - 14, p 0 - 0 - 5, r 0 - 0 - 4, Ta p 3 - 4 - 4, r 5 - 6 - 6. Leg II: Fe d 1 - 2 - 1, Pa p 0 - 0 - 2, Ti v 5 - 7 - 12, p 2 - 2 - 9, r 1 - 2 - 4, Mt v 6 - 6 - 7, p 3 - 5 - 10, r 3 - 3 - 4, Ta p 4 - 4 - 4, r 6 - 6 - 7. Leg III: Fe d 1 - 2 - 1, Ti p 2 - 3 - 6, Mt r 6 - 3 - 8, Ta p 5 - 8 - 8, r 2 - 4 - 7. Leg IV: Fe d 1 - 2 - 1, Ti v 1 - 2 - 3, r 0 - 1 - 2, Mt v 1 - 3 - 3, p 1 - 2 - 5, r 0 - 3 - 5, Ta p 5 - 5 - 8, r 5 - 5 - 8. Female (UFMG 24031) HABITUS. See Fig. 26 J. MEASUREMENTS. TBL 13, CL 5.8, CW 4.9, LL 0.8, LW 2, SL 3.5, SW 3.5. COLOR. Carapace and legs brown, light brown sternum (Fig. 22 J – K). Abdomen grey. PROSOMA. Carapace and ocular arrangement as shown in Fig. 26 J. Eye tubercle: 0.6 long; 1 wide. AME-ALE distance 0.8. Eye diameters: AME 0.2, ALE 0.3, PME 0.2, PLE 0.4. Thoracic fovea procurved (Fig. J). Labium with 3 cuspules (Fig. 26 K). Maxilla with 30 cuspules, distributed throughout anterior ventral half (Fig. 26 K). Basal segment of chelicerae with a prolateral row of 7 large teeth and 4 small retrolateral teeth, grouped in basal half. Rastellum well developed, presenting 14 – 16 robust spines (Fig. 26 K). PALP AND LEG MEASUREMENTS. Palp = 9.6 (3, 2, 2.2, 2.4), I = 10.2 (2.8, 2.2, 2.3, 1.7, 1.2), II = 10.2 (3.3, 2.2, 2, 1.3, 1.4), III = 11.3 (3, 2.3, 2, 2.3, 1.7), IV = 15.2 (4, 3, 3.2, 2.9, 2.1). SPINATION. Palp: Ti p 5 - 6 - 9, r 6 - 8 - 12, Ta p 6 - 7 - 8, r 8 - 8 - 9. Leg I: Pa v 0 - 0 - 2, Ti v 1 - 2 - 1, p 4 - 6 - 9, r 4 - 6 - 11, Mt v 2 - 1 - 1, p 8 - 6 - 8, r 10 - 3 - 4, Ta v 0 - 0 - 1, p 3 - 4 - 4, r 4 - 3 - 2. Leg II: Ti v 1 - 1 - 1, p 3 - 7 - 7, r 0 - 1 - 2, Mt v 1 - 1 - 1, p 7 - 5 - 4, r 1 - 2 - 2, Ta v 0 - 1 - 1, p 4 - 4 - 3, r 2 - 2 - 1. Leg III: Fe d 0 - 0 - 1, Pa d 0 - 0 - 1, p 4 - 5 - 8, r 0 - 0 - 1, Ti v 0 - 1 - 2, p 3 - 4 - 5, r 0 - 1 - 4, Mt v 2 - 1 - 2, p 2 - 3 - 2, r 2 - 2 - 1, Ta v 1 - 2 - 3, p 0 - 0 - 3. Leg IV: Fe d 0 - 0 - 1, Pa p 12 - 4 - 2, Ti v 1 - 1 - 2, Mt v 2 - 3 - 5, p 0 - 1 - 2, Ta v 1 - 2 - 3, p 0 - 3 - 6. SPERMATHECAE. Ducts with weakly sclerotized basal half and thickened and sclerotized apical half; asymmetric receptacula, with expansion of medial half (Fig. 26 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE843FF9EEE35FCEFFE38FC8E.taxon	distribution	Distribution Brazil. Widely distributed in the Amazon region, with records for the North region (Amazonas, Pará and Rondônia) (Fig. 3 B).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE85CFF9AEDBEFC5CFD13FB10.taxon	description	Figs 2 E – F, 4 C, 6 G, 27 – 28	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE85CFF9AEDBEFC5CFD13FB10.taxon	diagnosis	Diagnosis Males of Idiops pirassununguensis differ from those of other Neotropical species by having the tibial apophysis with a robust apical branch and a prominent spine in prolateral view (Figs 27 H – I, 28 C), metatarsus I long with a prolateral projection on the apical half (Fig. 27 I) and the embolus with a prominent lamella that expands along the apical half, with a constriction near the sperm duct opening (Figs 27 D – F, 28 E – F). Females differ by having the spermathecae with long vertical ducts, and strong sclerotization on the transition between duct and receptacula, with the same diameter as ducts (Fig. 27 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE85CFF9AEDBEFC5CFD13FB10.taxon	materials_examined	Type material Holotype BRAZIL – São Paulo • ♂; Pirassununga; Nov. 1997; P. Valdujo leg.; IBSP 9565. Other material examined BRAZIL – Amapá • 7 ♂♂; Mazagão; 0 ° 6 ′ 54 ″ S, 51 ° 17 ′ 20 ″ W; 3 Dec. 2003; R. A. da Silva leg.; MCTP 16519. – Amazonas • 2 ♂♂; Manaus, PAE Lago Grande; 3 ° 3 ′ 45 ″ S, 59 ° 59 ′ 19 ″ W; 2 – 7 Jul. 2007; Projeto Geoma 2 leg.; INPA 6914, INPA 6916 • 1 ♀; Manaus, PAE Lago Grande; 5 May 2007; A. L. Tourinho and R. Saturnino leg.; INPA 6915. – Pará • 1 ♂; Parauapebas; 6 ° 4 ′ 4 ″ S, 49 ° 54 ′ 7 ″ W; Sep. 2008; C. A. R. Souza leg.; IBSP 225254. – Rondônia • 1 ♂; Pimenta Bueno; 11 ° 40 ′ 21 ″ S, 61 ° 11 ′ 37 ″ W; Jul. 2000; L. Carvalho leg.; IBSP 13335 • 2 ♂♂; same collection data as for preceding; IBSP 13337 • 4 ♂♂; Vilhena; 12 ° 44 ′ 26 ″ S, 60 ° 8 ′ 45 ″ W; Sep. 1999; L. Carvalho leg.; IBSP 14400 • 2 ♂♂; same collection data as for preceding; IBSP 14401, IBSP 14403 • 2 ♂♂; same collection data as for preceding; IBSP 14402. – Maranhão • 1 ♂; Caxias, Área de Proteção Ambiental Municipal do Inhamum; 04 ° 53 ′ 30 ′′ S, 43 ° 24 ′ 53 ″ W; 2 – 5 Oct. 2007; Lima-Lobato leg.; IBSP 130947 • 1 ♂; same collection data as for preceding; IBSP 129120. – Goiás • 2 ♂♂ (SEM); Caldas Novas, UHE Corumbá; 17 ° 42 ′ 50 ″ S, 48 ° 32 ′ 22 ″ W; 12 – 23 Aug. 1996; M. T. I. Rodrigues et al. leg.; MZSP 15651. – Piauí • 5 ♂♂; Alvorada do Gurguéia, Fazenda Escola UFPI; 8 ° 22 ′ 11.5 ″ S, 43 ° 51 ′ 30.2 ″ W; 4 – 12 Sep. 2018; D. B. S. Barbosa et al. leg.; CHNUFPI 2715 • 5 ♂♂; same collection data as for preceding; CHNUFPI 2713 • 12 ♂♂; same collection data as for preceding; CHNUFPI 2714 • 15 ♂♂; same collection data as for preceding; CHNUFPI 2576 to 2590 • 2 ♂♂; Castelo do Piauí, Fazenda Bonito, ECB Rochas Ornamentais do Brasil LTDA; 5 ° 13 ′ 59 ″ S, 41 ° 41 ′ 14.5 ″ W; 11 Dec, 2005; F. M. Oliveira-Neto et al. leg.; MPEG 2336 • 2 ♂♂; same collection data as for preceding; MPEG 2339, MPEG 2401 • 1 ♂; Castelo do Piauí, Fazenda Bonito, ECB Rochas Ornamentais do Brasil LTDA; 5 º 13 ′ 47.7 ″ S, 41 ° 41 ′ 36.6 ″ W; MPEG 2337 • 1 ♂; Castelo do Piauí, Fazenda Bonito, ECB Rochas Ornamentais do Brasil LTDA; 5 º 14 ′ 12.8 ″ S, 41 ° 41 ′ 0.8 ″ W; MPEG 2338 • 2 ♂♂; Castelo do Piauí, Fazenda Bonito, ECB Rochas Ornamentais do Brasil LTDA; 5 ° 19 ′ 19 ″ S, 41 ° 33 ′ 10 ″; CHNUFPI CASTa 0226 • 1 ♂; same collection data as for preceding; CHNUFPI CASTa 0225 • 1 ♂; Castelo do Piauí, Fazenda Bonito, ECB Rochas Ornamentais do Brasil LTDA; 5 ° 13 ′ 46.7 ″ S, 41 ° 41 ′ 29.9 ″ W; 25 Oct. 2005; F. M. Oliveira-Neto et al. leg.; CHNUFPI 4024 • 2 ♂♂; Castelo do Piauí, Fazenda Bonito, ECB Rochas Ornamentais do Brasil LTDA; 5 ° 13 ′ 59 ″ S, 41 ° 41 ′ 14.5 ″ W; 8 May 2005; F. M. Oliveira-Neto et al. leg.; CHNUFPI 4028 • 2 ♂♂; same collection data as for preceding; CHNUFPI 2712 • 3 ♂♂; same collection data as for preceding; CHNUFPI 4025 to 4027 • 1 ♀; Guaribas, Parque Nacional da Serra das Confusões; 9 ° 13 ′ 16 ″ S, 43 ° 29 ′ 21 ″ W; Oct. 2006; P. R. R. Silva et. al. leg.; CHNUFPI 4029 • 1 ♂; same collection data as for preceding; CHNUFPI 4030 • 2 ♂♂; Gilbués, Olhos Dágua da Santa, PN Serra das Confusões; MZSP 19974 • 1 ♂; São Raimundo Nonato, Parque Nacional Serra da Capivara; 8 ° 25 ′ 0 ″ S, 42 ° 20 ′ 0 ″ W; 27 Oct. – 9 Nov. 2012; R. Recoder and M. Teixeira Jr. leg.; IBSP 167608 • 1 ♂; Uruçuí, Vale do Rio Pratinha, 40 km from Uruçuí; 7 ° 50 ′ 08 ″ S, 44 ° 27 ′ 05 ″ W; M. P. D. Santos et al. leg.; CHNUFPI 2711 • 1 ♂; Uruçuí; Fazenda União, Topo da Chapada, 40 km from Uruçuí; 7 ° 41 ′ 41 ″ S, 44 ° 26 ′ 30 ″ W; 26 Oct. 2007; F. M. Oliveira-Neto leg.; CHNUFPI 2710. – Paraíba • 5 ♂♂; São José dos Cordeiros, RPPN Almas; 7 ° 28 ′ 45 ″ S, 36 ° 54 ′ 18 ″ W; 2008 – 2009; A. Vasconcelos leg.; IBSP 228197, IBSP 228200 to 228201, IBSP 228205, IBSP 228207 • 2 ♂♂; same collection data as for preceding; IBSP 228202 • 2 ♂♂; same collection data as for preceding; IBSP 228199 • 3 ♂♂; same collection data as for preceding; IBSP 228193. – Sergipe • 1 ♂; Canindé do São Francisco, Fazenda São José-Olhos Dʼágua, UHE de Xingó; 9 ° 37 ′ 25 ″ S, 37 ° 47 ′ 54 ″ W; 31 Oct. 2000; L. Ianuzzi leg.; IBSP 10183. – Mato Grosso • 2 ♂♂; Pontes e Lacerda; 15 ° 19 ′ 10.38 ″ S, 59 ° 17 ′ 33.70 ″ W; 5 – 10 Oct. 2013; R. A. K. Ribeiro leg.; UFMT • 2 ♂♂; Vila Bela da Santíssima Trindade, Córrego Areias; 14 ° 50 ′ 29.9 ″ S, 69 ° 39 ′ 01.2 ″ W; 2 – 4 Nov. 2013; R. A. K. Ribeiro leg.; UFMT • 1 ♂; Lucas do Rio Verde, PCH Canoa Quebrada; 12 ° 47 ′ S, 56 ° 00 ′ W; V. Azaias leg.; UFMT. – Minas Gerais • 1 ♂; Santana do Riacho, Parque Nacional Serra do Cipó; 19 ° 22 ′ 1 ″ S, 43 ° 32 ′ 17 ″ W; Oct. 2004; UFMG 1740 • 2 ♂♂; Santa Luzia; 19 ° 46 ′ 12 ″ S, 43 ° 51 ′ 3 ″ W; 9 Oct. 2004; UFMG 1730, UFMG 1732 • 1 ♂; Santa Luzia, 19 º 46 ′ 43.52 ″ S, 43 º 50 ′ 26.56 ″ W; 17 Sep. 2011; B. R. N. Leg keys; UFMG 8471 • 1 ♀; Morro do Pilar; 19 º 12 ′ 56 ″ S, 43 º 22 ′ 34 ″ W; 6 Aug. 2011; P. H. Martins leg.; UFMG 11296 • 1 ♀; Morro do Pilar; 19 º 12 ′ 56 ″ S, 43 º 22 ′ 34 ″ W; 29 Jul. 2011; P. H. Martins leg.; UFMG 11297 • 1 ♀; Santana do Riacho; 19 º 10 ′ 8 ″ S, 43 º 42 ′ 57 ″ W; 9 Jul. 2011; P. H. Martins leg.; UFMG 11264 • 2 ♂♂, 1 ♀; Santana do Riacho, Parque Nacional Serra do Cipó; 19 ° 21 ′ 06.8 ″ S, 43 ° 36 ′ 38.8 ″ W; 17 – 21 Oct. 2018; R. F. Ferreira, A. Galleti, P. H. Martins and V. Ghirotto leg.; CAD 833 • 1 ♀; Diamantina, Campus JK; 18 ° 14 ′ 56 ″ S, 43 ° 36 ′ 0 ″ W; 7 Mar. 2010; W. F. Silva leg.; CAD 27 • 1 ♂; São Gonçalo do Rio Preto, Parque Estadual do Rio Preto; 18 ° 10 ′ 29.97 ″ S, 43 ° 20 ′ 41.25 ″ W; 20 – 25 Oct. 2010; G. Monteiro, F. Sá, W. F. Silva and J. P. L. Guadanucci leg.; CAD 275 • 1 ♀; São Gonçalo do Rio Preto, Parque Estadual do Rio Preto; 14 Jan. 2010; J. P. L. Guadanucci, W. F. Silva, D. Moura, R. F. Ferreira and D. Weinmann leg.; CAD 14 • 1 ♂; Belo Horizonte, Campus UFMG; 19 ° 52 ′ 19 ″ S, 43 ° 57 ′ 58 ″ W; 27 Nov. 1999; E. S. S. Álvares leg.; UFMG 606 • 2 ♂♂; Belo Horizonte, Campus UFMG; 10 – 25 Sep. 2000; E. S. S. Álvares leg.; UFMG 607 • 1 ♂; Belo Horizonte, Campus UFMG; 30 Aug. 2000; E. S. S. Álvares leg.; UFMG 608 • 2 ♂♂; Belo Horizonte, Campus UFMG; 26 Sep. 2009; I. L. F. Magalhães leg.; UFMG 3211 • 1 ♂; Belo Horizonte, Reserva Biológica UFMG; IBSP 14488 • 1 ♂; Belo Horizonte, Campus UFMG, Centro Pedagógico UFMG; Jul. 2002; C. Torres leg.; IBSP 13659. – São Paulo • 1 ♂; Araraquara; 21 ° 47 ′ 38 ″ S, 48 ° 10 ′ 33 ″ W; 30 Sep. 1988; IBSP 9562 • 1 ♂; Ribeirão Preto; 21 ° 10 ′ 40 ″ S, 47 ° 48 ′ 36 ″ W; 24 Nov. 2004; IBSP 12337 • 1 ♂; Santo Antônio do Aracanguá; 20 ° 56 ′ 13 ″ S, 50 ° 29 ′ 45 ″ W; IBSP 14314 • 1 ♂; São Paulo, Parque dos Príncipes; 23 ° 25 ′ S, 46 ° 37 ′ W; IBSP 13324 • 1 ♂; Rio Pequeno; 23 ° 33 ′ S, 46 ° 43 ′ W; IBSP 3346 • 1 ♂; São Roque; 23 ° 31 ′ 44 ″ S, 47 ° 08 ′ 06 ″ W; 2 Aug. 2011; A. B. Canute leg.; IBSP 9133.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE85CFF9AEDBEFC5CFD13FB10.taxon	description	Emended description Male and female recently described by Fukami & Lucas (2005). New data on the male and female are included here: Male (UFMG 607) HABITUS. See Fig. 27 A. COLOR. Carapace with dark brown spots on anterior half, mainly on cephalic area near eyes (Fig. 27 A). PROSOMA. Carapace and ocular arrangement as shown in Fig. 27 A. Eye tubercle: 0.6 long; 1 wide. AME-ALE distance 0.8. Basal segment of chelicerae with a prolateral row of 6 large teeth and 4 small retrolateral teeth, grouped in basal half (Fig. 28 A); rastellum presenting 12 spines of same size (Fig. 28 B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 27 G. Pseudoscopula: on tarsus I divided into rows of strong setae; tarsus II – IV totally covered. PALP. Tibia with expansion of basal half of retrolateral depression (Figs 27 C, 28 D). Palpal bulb with short embolus with a strongly inclined basal portion and incomplete subapical torsion (Fig. 27 D – F). SPINATION. Palp: Ti r 24, Ta d 0 - 0 - 4. Leg I: Fe d 1 - 1 - 2, Ti v 1 r- 1 r- 2 r, Mt 1 r- 2 r- 1, Ta r 2 - 1 - 0. Leg II: Fe d 1 - 1 - 2, Ti v 0 - 2 r- 1 r- 1, Mt v 1 r- 1 r- 1 r- 2, Ta p 0 - 0 - 1, r 2 - 2 - 0. Leg III: Fe d 1 - 1 - 1, Pa d 1 - 1 - 0, p 3 - 5 - 8, r 0 - 0 - 2, Ti v 0 - 1 r- 0 - 2, p 1 - 1 - 4, r 1 - 1 - 2, Mt v 3 - 4 - 0 - 4, p 3 - 2 - 2, r 0 - 1 - 2, Ta p 0 - 4 - 8, r 0 - 4 - 8. Leg IV: Fe d 1 - 1 - 2, Pa p 16 - 3 - 0, Ti v 1 - 2 - 2, Mt v 1 - 2 - 1 - 3, Ta p 2 - 3 - 6, r 0 - 0 - 2. Female (UFMG 11264) HABITUS. See Fig. 27 J. MEASUREMENTS. TBL 19.1, CL 9.8, CW 8.8, LL 1.5, LW 1.8, SL 5.4, SW 4.8. COLOR. Similar to that of male, except sternum and coxae brownish and dark gray abdomen (Fig. 27 J – K). PROSOMA. Carapace and ocular arrangement as shown in Fig. 27 J. Eye tubercle: 2.2 long; 1.9 wide. AME-ALE distance 1.4. Eye diameters: AME 0.4, ALE 0.5, PME 0.3, PLE 0.6. Thoracic fovea procurved (Fig. 27 J). Labium with 6 cuspules (Fig. 27 K). Maxilla with 92 cuspules, distributed over anterior ventral half, with 15 large cuspules at anterior prolateral end and 18 large cuspules at anterior retrolateral end (Fig. 27 K). Basal segment of chelicerae with a prolateral row of 6 large teeth and a retrolateral row with 3 small teeth, grouped in basal third, rastellum presenting 22 – 24 spines of same size (Fig. 27 K). PALP AND LEG MEASUREMENTS. Palp = 14.4 (4.8, 3.1, 3.2, 3.3), I = 16.4 (5.3, 3.6, 3.6, 2.6, 1.3), II = 14.7 (4.8, 3.4, 2.9, 2.4, 1.2), III = 15.1 (4.1, 3.5, 2.4, 3.1, 2), IV = 20.3 (5.4, 4.1, 4.4, 4.2, 2.2). SPINATION. Palp: Ti p 5 - 12 - 13, r 7 - 12 - 14, Ta v 0 - 0 - 3, p 12 - 10 - 8, r 12 - 14 - 8. Leg I: Ti p 5 - 7 - 8, r 7 - 8 - 12, Mt p 12 - 9 - 11, r 11 - 10 - 9, Ta v 0 - 0 - 6, p 5 - 4 - 2, r 5 - 4 - 2. Leg II: Ti p 3 - 6 - 6, r 1 - 3 - 3, Mt p 12 - 9 - 12, r 5 - 5 - 6, Ta v 0 - 0 - 5, p 7 - 4 - 3, r 6 - 3 - 1. Leg III: Pa p 3 - 4 - 8, r 0 - 0 - 3, Ti v 1 - 1 - 1, p 2 - 3 - 6, r 0 - 2 - 4, Mt v 2 - 2 - 2, p 6 - 2 - 2, r 8 - 1 - 2, Ta v 0 - 6 - 15. Leg IV: Pa p 37 - 4 - 0, Ti v 1 - 1 - 2, Mt v 2 - 2 - 2, Ta v 2 - 4 - 13. SPERMATHECAE. Ducts with non-sclerotized basal region, thicker than apical portion; sclerotized apical portion; spherical and non-sclerotized receptacula, with evident granules (Fig. 27 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE85CFF9AEDBEFC5CFD13FB10.taxon	distribution	Distribution Brazil. Widely distributed, with areas in the phytophysiognomies of the Amazon, Caatinga and Cerrado. Records for Central-West region (Distrito Federal and Goiás), North region (Amazonas, Amapá, Pará and Rondônia), Northeast region (Bahia, Maranhão, Paraíba, Piauí and Sergipe) and Southeast region (Minas Gerais and São Paulo) (Fig. 4 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE858FF96EE49FAC8FB5BFDF2.taxon	description	Figs 4 C, 6 F, 29 – 30	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE858FF96EE49FAC8FB5BFDF2.taxon	diagnosis	Diagnosis The male of Idiops rastratus resembles that of I. fuscus by the shape of the palpal bulb, but differs by having the embolus curvature less accentuated (Fig. 29 D – F) and the absence of a projection at the base of the retrolateral depression of the palpal tibia. The female differs from that of other species (except Idiops opifex and I. duocordibus sp. nov.) by the strong cuspules on the entire ventral face of the maxillae (Fig. 29 K). Differs from I. opifex by the aspect of the spermathecae, with a shorter duct and a slightly larger receptacle compared to the diameter of the duct (Fig. 29 L). Differs from I. duocordibus sp. nov. by the unmodified and rounded receptacle (Fig. 29 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE858FF96EE49FAC8FB5BFDF2.taxon	materials_examined	Type material Syntypes BRAZIL – Rio de Janeiro • 4 ♀♀; Serra dos Órgãos; W. Baker leg.; BMNH 1890.1.20.1 to 1890.1.20.4. Other material examined BRAZIL – Bahia • 2 ♂♂; Feira de Santana, Serra de São José; 12 ° 16 ′ 1 ″ S, 38 ° 58 ′ 1 ″ W; 2009 – 2010; G. de Ferreira leg.; IBSP 258656 to 258657 • 1 ♀, 1 juv.; Porto Seguro, Arraial dʼAjuda; 16 ° 27.643 ′ S, 39 ° 08.298 ′ W; 24 – 27 Feb. 2005; Expedição Arachné leg.; MNRJ • 18 ♂♂; Una; 15 ° 17 ′ 34 ″ S, 39 ° 4 ′ 30 ″ W; Dec. 1999; K. Kato leg.; MZSP 24233 • 11 ♂♂; same collection data as for preceding; MZSP 24218 • 15 ♂♂, 2 ♀♀; same collection data as for preceding; MZSP 24214 • 13 ♂♂; same collection data as for preceding; MZSP 24216 • 7 ♂♂; same collection data as for preceding; MZSP 24219 • 7 ♂♂; same collection data as for preceding; MZSP 24221 • 10 ♂♂; same collection data as for preceding; MZSP 24292 • 7 ♂♂; same collection data as for preceding; MZSP 24211 • 2 ♂♂, 1 ♀; same collection data as for preceding; MZSP 24282 • 2 ♂♂; same collection data as for preceding; MZSP 24212 • 5 ♂♂, 1 ♀; same collection data as for preceding; MZSP 24210 • 6 ♂♂; same collection data as for preceding; MZSP 24284 • 3 ♂♂ (SEM); same collection data as for preceding; MZSP 24215 • 6 ♂♂; same collection data as for preceding; MZSP 24675 • 5 ♂♂; same collection data as for preceding; MZSP 24220 • 3 ♂♂; same collection data as for preceding; MZSP 24213 • 5 ♂♂; same collection data as for preceding; MZSP 24217 • 4 ♂♂; same collection data as for preceding; MZSP 24288 • 3 ♂♂; same collection data as for preceding; MZSP 24273 • 2 ♂♂; same collection data as for preceding; MZSP 24222 • 4 ♂♂; same collection data as for preceding; MZSP 24275 • 3 ♂♂; same collection data as for preceding; MZSP 24276 • 6 ♂♂; same collection data as for preceding; MZSP 24287. – Minas Gerais • 1 ♂; Nova Lima, Serra da Moeda, Cave PBR _ 10 _ 11; 20 º 09 ′ 20 ″ S, 43 º 58 ′ 24 ″ W; 15 – 20 Mar. 2010; R. Bessi leg.; IBSP 196034. – Espírito Santo • 2 ♂♂; Linhares, Reserva Natural Vale; 19 ° 6 ′ 54 ″ S, 39 ° 56 ′ 20 ″ W; 27 – 30 Apr. 2010; J. P. P. P. Barbosa et al. leg.; IBSP 234713. – Rio de Janeiro • 1 ♀; Teresópolis, Parque Nacional da Serra dos Órgãos; 23 ° 27 ′ 33 ″ S, 46 ° 38 ′ 2 ″ W; 10 – 22 Nov. 2010; R. P. Indicatti and F. U. Yamamoto leg.; IBSP 243973. – São Paulo • 36 ♂♂; Bananal, Estação Biológica de Bananal; 22 ° 15 ′ – 22 ° 37 ′ S, 44 ° 07 ′ – 44 ° 22 ′ W; 13 – 25 Apr. 2004; A. E. Monteiro leg.; MZSP 23781 • 39 ♂♂; same collection data as for preceding; MZSP 23732 • 1 ♀; Bananal, Estação Biológica de Bananal; 2010; J. M. Pereira leg.; IBSP 245408.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE858FF96EE49FAC8FB5BFDF2.taxon	description	Description Male (MZSP 24282) HABITUS. See Fig. 29 A. MEASUREMENTS. TBL 11.2, CL 5.5, CW 5.2, LL 0.7, LW 1, SL 3, SW 2.6. COLOR. Carapace and legs reddish brown, with yellowish coxae, brownish sternum (Fig. 29 A – B), abdomen dorsally dark gray and ventrally brownish. PROSOMA. Carapace and ocular arrangement as shown in Fig. 29 A. Eye tubercle: 1.3 long; 1.4 wide. Distance AME-ALE 0.5. Eye diameters: AME 0.5, ALE 0.3, PME 0.2, PLE 0.4. Thoracic fovea procurved (Fig. 27 A). Labium and sternum without cuspules (Fig. 29 B). Basal segment of chelicerae with a prolateral row of 5 large teeth and 4 – 5 small retrolateral teeth in basal third (Fig. 30 A), with proeminent rastellum, with 7 – 8 spines, with larger ones in distal region (Fig. 30 B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 29 G. Basal branch of tibial apophysis with additional tooth (Fig. 30 C). Pseudoscopula: tarsus I smooth, II weakly covered, III – IV densely covered. PALP. Tibia with conspicuous retrolateral depression and with larger spines concentrated on basal half (Figs 29 C, 30 D); embolus with apical lamella with a differentiated dorsal and ventral border (Figs 29 D – F, 30 E – F). PALP AND LEG MEASUREMENTS. Palp = 9 (3.2, 1.6, 3, 1.2), I = 20.7 (6.4, 3, 4.9, 4.4, 2), II = 16,5 (5.3, 2, 3.6, 3.8, 1.8), III = 15.13 (4.1, 2.1, 3, 3.9, 1.9), IV = 21.7 (6, 2.7, 5.3, 5.3, 2.4). SPINATION. Palp: Ti r 36, Ta d- 0 - 0 - 4. Leg I: Ti v 1 r- 1 r- 2 r- 1 ap, Mt v 35 - 3, Ta v 45, p 2 - 3 - 3, r 4 - 3 - 1. Leg II: Ti v 1 r- 1 r- 3 r- 2, Mt v 4 - 6 - 5 - 3 ap, p 0 - 1 - 1, Ta p 3 - 4 - 2, r 3 - 3 - 4. Leg III: Pa p 1 - 2 - 7, r 0 - 1 - 2, Ti v 1 - 2 - 2 - 1 ap, p 1 - 1 - 1, r 1 - 1 - 1, Mt v 2 - 4 - 3 - 4, p 0 - 0 - 2, r 1 - 1 - 1, Ta p 2 - 3 - 2, r 3 - 4 - 2. Leg IV: Pa p 6 - 1 - 0, Ti v 1 - 1 - 4, Mt v 1 - 1 r- 1 - 3, Ta p 2 - 1 - 3, r 0 - 1 - 2. Female (BMNH 1890.1.20.1) HABITUS. See Fig. 29 J. MEASUREMENTS. TBL 13, CL 5.8, CW 4.9, LL 0.8, LW 2, SL 3.5, SW 3.5. COLOR. Carapace and legs reddish brown, with yellowish coxae, brownish sternum (Fig. 29 J – K), abdomen dorsally dark gray and ventrally brownish. PROSOMA. Carapace and ocular arrangement as shown in Fig. 29 J. Eye tubercle: 1.7 long; 1.5 wide. Distance AME-ALE 0.9. Eye diameters: AME 0.5, ALE 0.4, PME 0.3, PLE 0.4. Thoracic fovea procurved (Fig. 29 J). Labium with 14 cuspules. Maxilla with 113 cuspules, distributed throughout ventral region (Fig. 29 K). Basal segment of chelicerae with a prolateral row of 5 large teeth and a retrolateral row with 9 small teeth, grouped in basal third, rastellum with 12 – 14 spines, distal ones longer. PALP AND LEG MEASUREMENTS. Palp = 11.4 (3.9, 2.4, 2.7, 2.4), I = 12.7 (4.4, 2.7, 2.7, 1.9, 1), II = 10.8 (3.3, 2.5, 2.2, 1.8, 1), III = 11.4 (3.4, 2.4, 1.9, 2.3, 1.4), IV = 16.2 (4.8, 2.9, 3.6, 3.1, 1.8). SPINATION. Palp: Ti r 36, Ta d- 0 - 0 - 4. Leg I: Ti v 1 r- 1 r- 2 r- 1 ap, Mt v 35 - 3, Ta v 45, p 2 - 3 - 3, r 4 - 3 - 1. Leg II: Ti v 1 r- 1 r- 3 r- 2 ap, Mt v 4 - 6 - 5 - 3, p 0 - 1 - 1, Ta p 3 - 4 - 2, r 3 - 3 - 4. Leg III: Pa p 1 - 2 - 7, r 0 - 1 - 2, Ti v 1 - 2 - 2, p 1 - 1 - 1, r 1 - 1 - 1, Mt v 2 - 4 - 3 - 4, p 0 - 0 - 2, r 1 - 1 - 1, Ta p 2 - 3 - 2, r 3 - 4 - 2. Leg IV: Pa p 6 - 1 - 0, Ti v 1 - 1 - 4, Mt v 1 - 1 r- 1 - 3, Ta p 2 - 1 - 3, r 0 - 1 - 2 SPERMATHECAE. Base divided by non-sclerotized area. Ducts short and slightly narrower than receptacles, which are spherical and with evident granules (Fig. 29 L).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE858FF96EE49FAC8FB5BFDF2.taxon	distribution	Distribution Brazil. Mainly distributed in Atlantic Forest phytophysiognomies along the coastal zone, with records for the Southeast region (east of São Paulo, Espírito Santo and Rio de Janeiro) and Northeast region (center-south of Bahia). Only one record for the central region of Minas Gerais (Fig. 4 C)	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE854FF94EE35FDA9FD5DF9EC.taxon	description	Figs 3 C, 31	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE854FF94EE35FDA9FD5DF9EC.taxon	diagnosis	Diagnosis The male of Idiops rohdei differs from that of other Neotropical species by the rectangular shape in dorsal view of the apical branch of the tibial apophysis (Fig. 31 H) and by the short metatarsus I with a projection on the apical half (Fig. 31 I). The female differs in having the spermathecae with ducts slightly curved outward in the median portion and elongated bean-shaped receptacles (Fig. 31 J – K).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE854FF94EE35FDA9FD5DF9EC.taxon	materials_examined	Type material Holotype PARAGUAY • ♀; R. Rohde leg.; ZMB 6230. Other material examined PARAGUAY • 1 ♂; Departamento Amambay, 33 km SW of Pedro Juan Caballero, Parque Nacional Cerro Corá, camping area; 22 ° 38 ′ 04.6 ″ S, 56 ° 01 ′ 33.8 ″ W; 22 Oct. 2019; A. Pérez-González, A. Ojanguren, D. J. Guerrero and J. Kochalka leg.; IBNP- 2444. Remark: The description of Idiops rohdei was based on a female specimen from Paraguay, without any further details about its locality. We had access to a male specimen from Parque Nacional Cerro Corá, mid-eastern Paraguay. The female holotype and the male specimen share the overall body coloration, especially close to the eye tubercle, which is dark brown. We decided to consider them as cospecifics, pending the availability of more specimens from Paraguay or nearby regions to support our decision.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE854FF94EE35FDA9FD5DF9EC.taxon	description	Description Male (IBNP- 2444) HABITUS. See Fig. 31 A. MEASUREMENTS. TBL 6.3, CL 3.3, CW 3.1, LL 0.5, LW 0.6, SL 1.8, SW 1.7. COLOR. Carapace and legs reddish brown, with dark brown ocular tubercle, yellowish coxae, brownish sternum (Fig. 31 A – B), abdomen dorsally dark gray and ventrally brownish. PROSOMA. Carapace and ocular arrangement as shown in Fig. 31 A. Eye tubercle: 0.6 long; 0.8 wide. Distance AME-ALE 0.5. Eye diameters: AME 0.3, ALE 0.3, PME 0.1, PLE 0.2. Thoracic fovea procurved (Fig. 31 A). Labium and sternum without cuspules (Fig. 31 B). Basal segment of chelicerae with a prolateral row of 4 larger teeth, and a small, retrolateral row with 2 small teeth, grouped in basal half, rastellum with 3 spines (Fig. 31 B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 31 G. Pseudoscopula: tarsus II – IV fully covered. PALP. Tibia with spines distributed along margin of retrolateral depression, with larger spines on basal and apical portions (Fig. 31 C), embolus with a keel in dorsal and retrolateral view, embolus strongly curved dorsally with abrupt reduction in thickness in its apical half, incomplete torsion at spermatic duct opening (Fig. 31 D – F). PALP AND LEG MEASUREMENTS. Palp = 2.8 (1, 0.5, 0.9, 0.4), I = 4.2 (1.4, 0.7, 1, 0.8, 0.3), II = 3.5 (1, 0.6, 1, 0.6, 0.3), III = 4.1 (1.5, 0.6, 0.7, 0.8, 0.5), IV = 4.4 (1, 0.7, 1.2, 1, 0.5). SPINATION. Palp: Ti r 25. Leg I: Fe d 1 - 2 - 2, Pa v 0 - 0 - 1, Ti v 1 - 1 - 2, p 0 - 0 - 1, r 2 - 2 - 2, Mt v 1 - 1 - 1, p 0 - 0 - 1, r 2 - 2 - 2, Ta v 3 - 6 - 5, p 0 - 1 - 1, r 2 - 2 - 1. Leg II: Pa v 0 - 0 - 2, Ti v 2 - 1 - 3, r 1 - 2 - 2, Mt v 4 - 3 - 4, p 0 - 0 - 3, r- 2 - 2, Ta p 0 - 1 - 1, r 2 - 1 - 1. Leg III: Pa p 0 - 0 - 3, Ti v 0 - 2 - 2, Mt v 0 - 1 - 3, p 0 - 0 - 1, Ta r 1 - 0 - 1. Leg IV: Pa p 0 - 0 - 6, Ti p 0 - 0 - 2, Mt v 0 - 2 - 4, Ta p 1 - 1 - 2. Female (holotype ZMB 6230) MEASUREMENTS. TBL 13.9, CL 6.8, CW 5.8, LL 1, LW 1.4, SL 4.2, SW 3.7. COLOR. Carapace and legs red brown. Eye tubercle dark brown. Sternum brown. PROSOMA. Eye tubercle: 1.7 long; 1.5 wide. AME-ALE distance 1. Eye diameters: AME 0.4, ALE 0.3, PME 0.3, PLE 0.4. Thoracic fovea procurved. Labium with 5 cuspules. Maxilla with 58 cuspules, distributed throughout anterior ventral half. Basal segment of chelicerae with a prolateral row of 6 large teeth and 11 small retrolateral teeth, grouped in median area. PALP AND LEG MEASUREMENTS. Palp = 11.2 (3.7, 2.3, 2.6, 2.6), I = 13.1 (4.4, 2.9, 2.8, 2, 1), II = 11.7 (4, 2.7, 2.2, 1.8, 1), III = 12.6 (3.8, 2.7, 1.8, 2.6, 1.7), IV = 17.3 (4.9, 3.3, 3.7, 3.4, 2). SPINATION. Palp: Fe p 0 - 0 - 2, Pa p 0 - 1 - 0, Ti p 7 - 7 - 12, r 6 - 11 - 12, Ta v 6 - 11 - 12. Leg. I: Ti p 6 - 5 - 8, r 4 - 7 - 15, Mt p 10 - 7 - 7, r 11 - 8 - 7, Ta v 0 - 0 - 7, p 4 - 4 - 4, r 4 - 4 - 0. Leg II: Ti p 3 - 4 - 7, r 1 - 2 - 4, Mt p 13 - 7 - 9, r 5 - 5 - 5, Ta v 0 - 0 - 6, p 5 - 5 - 3, r 5 - 3 - 0. Leg III: Pa p 6 - 5 - 12, r 0 - 0 - 3, Ti v 0 - 0 - 2, p 0 - 4 - 8, r 0 - 3 - 3, Mt v 2 - 2 - 3, p 10 - 4 - 3, r 5 - 2 - 1, Ta v 4 - 8 - 9. Leg IV: Pa p 39 - 0 - 0, Ti v 1 - 1 - 1, Mt v 1 - 1 - 7, r 0 - 0 - 1, Ta v 4 - 6 - 11. SPERMATHECAE. Bean-shaped receptacula with conspicuous granules, long, translucent ducts (Fig. 31 J – K).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE854FF94EE35FDA9FD5DF9EC.taxon	distribution	Distribution Paraguay. Departamento Amambay (Fig. 3 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE856FF91EDDEF9B3FE05F91B.taxon	description	urn: lsid: zoobank. org: act: 8 C 6 CC 368 - 27 DF- 45 A 0 - 9164 - 2 CA 32 C 4 D 0 F 39 Figs 4 C, 32 – 33	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE856FF91EDDEF9B3FE05F91B.taxon	diagnosis	Diagnosis Males of Idiops sertania sp. nov. differ from those of other Neotropical species by having the robust embolus with a wide basal half, strongly curved dorsally, with torsion at the apical end and a conspicuous embolar lamella close to the opening of the sperm duct (Figs 32 D – F, 33 E – F) and by having the palpal tibia elongated (similar to I. germaini) (Fig. 32 C). Differs from I. germaini by having large spines distributed along the margin of the retrolateral depression (Figs 32 C, 33 D) and by the robust tibial apophysis (Fig. 32 H).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE856FF91EDDEF9B3FE05F91B.taxon	etymology	Etymology The term ʻsertaniaʼ, referenced in the specific epithet, is a tribute to the ʻsertãoʼ of Brazil, a large region of the country where these spiders occur. The term sertão refers to culturally diverse regions, far from the coast and large cities, and generally associated with rural regions with little human occupation.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE856FF91EDDEF9B3FE05F91B.taxon	materials_examined	Type material Holotype BRAZIL – Minas Gerais • ♂; Januária, Parque Nacional Cavernas do Peruaçu; 15 ° 10 ′ 0 ″ S, 44 ° 22 ′ 0 ″ W; 3 – 25 Jan. 2008; M. T. Junior and R. S. Recoder leg.; IBSP 15348. Paratypes BRAZIL – Amazonas • 1 ♂; Nova Aripuanã, Santa Maria, Margem esquerda, Rio Arapuanã; 5 ° 47 ′ 52 ′′ S, 60 ° 15 ′ 55 ′′ W; May 2002; M. Trefaut leg.; MZUSP 21511. – Piauí • 1 ♂; Guaribas, Parque Nacional da Serra das Confusões; 9 ° 13 ′ 16 ″ S, 43 ° 29 ′ 21 ″ W; Oct. 2006; P. R. R. Silva et al. leg.; CHNUFPI 4031. – Ceará • 1 ♂; Crato, Floresta Nacional do Araripe; 07 ° 27 ′ 07.3 ″ S, 39 ° 19 ′ 52.4 ″ W; 2018; R. Azevedo leg.; IBSP 227617. – Minas Gerais • 1 ♂; same collection data as for holotype; IBSP 15346. Other material examined BRAZIL – Piauí • 5 ♂♂ (SEM); Bom Jesus, Estação Ecológica de Uruçuí-Una; 08 ° 52 ′ 5 ″ S, 44 ° 57 ′ W; 19 – 29 Jan. 2001; G. G. Martinelle leg.; MZSP 21546 • 2 ♂♂; União, Campus COMVAPI Ltda; 4 ° 35 ′ 9 ″ S, 42 ° 51 ′ 50 ″ W; 2006; J. Queiroz et al. leg.; CHNUFPI 0032, CHNUFPI 0035 • 2 ♂♂; same collection data as for preceding; CHNUFPI 0037 • 3 ♂♂; same collection data as for preceding; CHNUFPI 0034 • 2 ♂♂ (SEM); same collection data as for preceding; CHNUFPI 0039 • 2 ♂♂; same collection data as for preceding; CHNUFPI 0033 • 1 ♂; same collection data as for preceding; 4 ° 38 ′ 6 ″ S, 42 ° 50 ′ 19 ″ W; CHNUFPI 4035 • 2 ♂♂; same collection data as for preceding; CHNUFPI 0031. – Ceará • 1 ♂; Crato, Parque Estadual Sítio do Fundão; 07 ° 13 ′ 3 ″ S, 39 ° 20 ′ 21 ″ W; 2018; R. Azevedo leg.; IBSP 218294 • 2 ♂♂; Crato, Floresta Nacional do Araripe; 07 ° 27 ′ 07.3 ″ S, 39 ° 19 ′ 52.4 ″ W; 2018; R. Azevedo leg.; IBSP 218307, IBSP 227583. – Paraíba • 1 ♂; Areia, Mata do Pau Ferro; 06 ° 67 ′ 45.8 ″ S, 35 ° 55 ′ 27 ″ W; 5 Aug. 2011; S. B. R. Alencar et al. leg.; CHNUFPI 0041. – Bahia • 1 ♂; Contendas do Sincorá, Floresta Nacional Contendas do Sincorá; 13 ° 55 ′ 08,7 ″ S, 41 ° 07 ′ 13,8 ″ W; 12 – 14 Jan. 2012; I. L. F. Magalhães et al. leg.; IBSP 271351 – Tocantins • 1 ♂; Palmas, Taquarussu; 10 ° 19 ′ S, 48 ° 9 ′ W; Equipe IBSP leg.; IBSP 10415 • 1 ♂; Porto Nacional, Área urbana, UHE Luiz Eduardo Magalhães; 10 ° 42 ′ 28 ″ S, 48 ° 25 ′ 1 ″ W; Equipe IBSP leg.; IBSP 10437. – Goiás • 6 ♂♂; Caldas Novas, UHE Corumbá; 17 ° 42 ′ 50 ″ S, 48 ° 32 ′ 12 ″ W; 12 – 23 Aug. 1996; M. T. I. Rodrigues et al. leg.; MZSP 15656 • 2 ♂♂; Colinas do Sul, Serra da Mesa; 14 ° 01 ′ S, 48 ° 12 ′ W; 2 – 15 Dec. 1995; Silvestri, Dietz and Campaner leg.; MZSP 28851 • 1 ♂; Catalão, Barragem, Serra do Facão; 17 ° 31 ′ 51.07 ″ S, 47 ° 33 ′ 29.57 ″ W; Jul. 2013; R. B. Martines and R. M. C. Silveira leg.; UFMG 4442 • 4 ♂♂; Catalão, Barragem, Serra do Facão; 17 ° 35 ′ 34 ″ S, 47 ° 37 ′ 16 ″ W; Jul. 2011; R. B. Martines and R. M. C. Silveira leg.; UFMG 4441 • 1 ♂; Catalão, Barragem, Serra do Facão; 17 ° 51 ′ 40 ″ S, 47 ° 37 ′ 38 ″ W; Jul. 2012; R. B. Martines and R. M. C. Silveira leg. UFMG 4440. – Mato Grosso • 1 ♂; Chapada dos Guimarães; 15 ° 27 ′ 39 ″ S, 55 ° 45 ′ 0 ″ W; 20 – 30 Sep. 2000; C. Strussmann leg.; MCTP 11557 • 2 ♂♂; Chapada dos Guimarães; 20 – 29 Sep. 2000; C. Strussmann leg.; MCTP 13614 • 2 ♂♂; Chapada dos Guimarães; 20 – 28 Sep. 2000; C. Strussmann; MCTP 13661; 2 ♂♂; Poconé; 16 ° 15 ′ 25 ″ S, 56 ° 37 ′ 22 ″ W; 2010 – 2012; D. Batistella leg., Winkler extractor; IBSP 249196. – Mato Grosso do Sul • 1 ♂; Três Lagoas, Fazenda Canaã; 20 ° 45 ′ 04 ″ S, 51 ° 40 ′ 42 ″ W; Dec. 1967; F. Lane leg.; MZSP 7575. – Minas Gerais • 2 ♂♂; Januária, Parque Nacional Cavernas do Peruaçu; 15 ° 10 ′ 0 ″ S, 44 ° 22 ′ 0 ″ W; 3 – 25 Jan. 2008; M. Teixeira-Junior and R. S. Recoder leg.; IBSP 15345, IBSP 15347 • 2 ♂♂; same collection data as for preceding; IBSP 210881.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE856FF91EDDEF9B3FE05F91B.taxon	description	Description Male (holotype IBSP 15348) HABITUS. See Fig. 32 A. MEASUREMENTS. TBL 15.6, CL 7.7, CW 6.9, LL 1, LW 1.3, SL 4, SW 3.7. COLOR. Dark brown carapace, reddish brown legs, light brown sternum, abdomen gray (Fig. 32 A – B). PROSOMA. Carapace and ocular arrangement as shown in Fig. 32 A. Eye tubercle: 0.9 long; 1.2 wide. AME-ALE distance 1. Eye diameters: AME 0.2, ALE 0.4, PME 0.2, PLE 0.5. Thoracic fovea procurved (Fig. 32 A). Labium and sternum without cuspules (Fig. 32 B). Basal segment of chelicerae with a prolateral row of 6 large teeth and 6 small retrolateral teeth, grouped in the basal half, proeminent rastellum with 11 – 12 spines, distals largest (Fig. 33 A – B). LEGS. Tibia, metatarsus and tarsus I as shown in Fig. 32 G. Leg I with tibial apophysis with apical branch twice the size of basal branch (Figs 32 H – I, 33 C). Pseudoscopula: tarsus I weakly covered, II – IV totally covered. PALP. Tibia with conspicuous retrolateral depression and large spines distributed along its entire length (Figs 32 C, 33 D); embolus with keel in retrolateral view (Fig. 32 E). PALP AND LEG MEASUREMENTS. Palp = 10.2 (2.4, 2.2, 3.9, 1.7), I = 23.6 (7.2, 3.3. 4.9, 5.4, 2.8), II = 20.8 (6.4, 2.9, 4.4, 4.8, 2.3), III = 19.3 (5.3, 2.5, 3.6, 5, 2.9), IV = 27 (7.1, 3.4, 6, 7, 3.5). SPINATION. Palp: Ti r 20, Ta d 0 - 0 - 2. Leg I: Pa v 4, Ti v 4 - 5 - 4, Mt r 1 - 1 - 4, p 0 - 0 - 4, Ta r 3 - 4 - 3, p 1 - 3 - 2. Leg II: Pa p 0 - 0 - 4, r 0 - 0 - 3, Ti v 6 - 5 - 7, Mt p 0 - 2 - 3, r 2 - 3 - 4, Ta p 2 - 2 - 3, r 4 - 3 - 4. Leg III: Pa p 1, Ti v 1 - 2 - 2, p 0 - 0 - 1, Mt v 2 - 4 - 5, p 2 - 2 - 2, Ta r 4 - 4 - 5. Leg IV: Pa v 0 - 0 - 2, Ti v 1 - 1 - 3, Mt v 9 - 9 - 11, d 1 - 1 - 2, r 0 - 0 - 3, p 0 - 1 - 2, Ta p 3 - 3 - 7, r 0 - 0 - 2.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE856FF91EDDEF9B3FE05F91B.taxon	distribution	Distribution Brazil. Widely distributed, with areas covering the phytophysiognomies of the Amazon, Caatinga and Cerrado. Records for Central-west region (Goiás, Mato Grosso and Mato Grosso do Sul), North region (Amazonas), Northeast region (Bahia, Ceará and Piauí) and Southeast region (northern part of Minas Gerais) (Fig. 4 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE853FFEFEE3EF8C0FD81FCA2.taxon	description	Figs 3 B, 34	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE853FFEFEE3EF8C0FD81FCA2.taxon	diagnosis	Diagnosis The female of Idiops siolii differs from that of other Neotropical species by having the spermathecae with ducts with a thickened median portion and mushroom-shaped receptacles (Fig. 34 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE853FFEFEE3EF8C0FD81FCA2.taxon	materials_examined	Type material Holotype BRAZIL – Pará • ♀; Belém, Campus do IAN - Embrapa Amazônia Oriental; IBSP 3123. Lost in the fire of 2010. Neotype (here designated) BRAZIL – Pará • ♀; Melgaço, Flona Caxiuanã, Estação Científica Ferreira Penna, Plote B; 1 ° 47 ′ 32.3 ″ S, 51 ° 26 ′ 2.5 ″ W; 6 – 11 Apr. 2002; MPEG 1012. Remark: The type specimen of Idiops siolii was lost in the 2010 IBSP fire. In accordance with the criteria of the ICZN Code (ICZN 1999), a neotype is designated here, because the type is lost and the original description is inadequate to stabilise the species. The neotype is a specimen collected near the type locality, in the state of Pará, Brazil.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE853FFEFEE3EF8C0FD81FCA2.taxon	description	Description Male Unknown. Female (neotype MPEG 1012) HABITUS. See Fig. 34 A. MEASUREMENTS. TBL 13.8, CL 7.6, CW 6.6, LL 1.1, LW 1.5, SL 4.4, SW 3.7. COLOR. Carapace and legs reddish brown, with yellowish coxae, reddish brown sternum (Fig. 34 A – B). Abdomen gray. PROSOMA. Carapace and ocular arrangement as shown in Fig. 34 A. Eye tubercle: 0.7 long; 1.4 wide. AME-ALE distance 1. Eye diameters: AME 0.21, ALE 0.5, PME 0.2, PLE 0.4. Thoracic fovea procurved. Labium with 3 cuspules (Fig. 34 B). Maxilla with 31 cuspules, distributed throughout anterior ventral half (Fig. 34 B). Basal segment of chelicerae with a prolateral row of 8 large teeth and 4 small retrolateral teeth, grouped in basal half; rastellum with 20 – 22 short spines of same size (Fig. 34 B). PALP AND LEG MEASUREMENTS. Palp = 12.5 (4.2, 2.7, 2.7, 2.9), I = 13.8 (4.5, 2.8, 3, 2.1, 1.4), II = 13.2 (4.3, 3, 2.5, 2, 1.4), III = 12 (4.1, 2.3, 2.8, 2, 0.8), IV = 18.4 (4.4, 3.9, 4, 3.6, 2.5). SPINATION. Palp: Ti p 7 - 9 - 12, r 6 - 10 - 10, Ta p 12 - 10 - 11, r 14 - 12 - 9. Leg I: Ti p 3 - 7 - 10, r 9 - 8 - 10, Mt p 11 - 8 - 11, r 3 - 9 - 8, Ta v 0 - 0 - 3, p 5 - 4 - 3, r 5 - 5 - 4. Leg II: Pa p 5 - 5 - 12, Ti v 1 - 1 - 1, p 2 - 4 - 6, r 0 - 2 - 3, Mt v 2 - 2 - 3, d 2 - 2 - 2, p 6 - 4 - 2, r 2 - 3 - 1, Ta v 2 - 4 - 5, p 0 - 2 - 5, r 0 - 1 - 1. Leg III: Ti v 1 - 1 - 0, r 0 - 1 - 1, p 2 - 6 - 7, Mt v 2 - 2 - 4, p 9 - 7 - 9, r 2 - 2 - 2, Ta v 0 - 0 - 3, p 5 - 5 - 2, r 1 - 0 - 0. Leg IV: Ti v 0 - 0 - 1, Mt v 0 - 1 - 2, p 1 - 2 - 3, r 0 - 1 - 1, Ta v 2 - 1 - 2, p 1 - 5 - 5, r 0 - 2 - 2. SPERMATHECAE. V-shaped ducts with sclerotized portion between duct and receptacles. Bilobed ducts sclerotized, with evident granules (Fig. 34 C).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE853FFEFEE3EF8C0FD81FCA2.taxon	distribution	Distribution Brazil. Known only for the region of Belém and Melgaço (Pará), in the phytophysiognomies of the Amazonian region (Fig. 3 B)	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE82DFFEFEE11FC23FCC7FA61.taxon	discussion	Remark The female holotype from Suriname is deposited in National Museum of Natural History of Leiden. It was not possible to obtain the type specimen for loan. The examination of the type through photos revealed it to be an immature female specimen of Idiopinae. Moreover, the original description does not warrant species recognition, as it includes only generic level characteristics. Because of this, we consider I. bonapartei species inquirenda.	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
03B4126EE82DFFEFEE11FC23FCC7FA61.taxon	distribution	Distribution Suriname. Known only from the type locality (Fig. 5 B).	en	Fonseca-Ferreira, Rafael, Guadanucci, José Paulo Leite, Yamamoto, Flávio Uemori, Brescovit, Antonio Domingos (2021): Taxonomic revision of the Neotropical spiders of the genus Idiops Perty, 1833 (Araneae, Idiopidae), with description of four new species. European Journal of Taxonomy 780 (1): 1-71, DOI: 10.5852/ejt.2021.780.1581, URL: http://dx.doi.org/10.5852/ejt.2021.780.1581
