identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
244487DDD711C16AFC0644DDFB70F92A.text	244487DDD711C16AFC0644DDFB70F92A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Acanthogonatus Karsch 1880	<div><p>Genus Acanthogonatus Karsch, 1880</p> <p>Acanthogonatus Karsch, 1880: 391. — Raven 1985: 83 (transferred from the Barychelidae Simon, 1889 to the Nemesiidae). — Opatova et al. 2020: 701 (transferred to the Pycnothelidae).</p> <p>Tryssothele Simon, 1902: 7.</p> <p>TYPE SPECIES. — By original designation, Acanthogonatus francki Karsch, 1880.</p> <p>DIAGNOSIS. — See Goloboff (1995): 73.</p></div> 	https://treatment.plazi.org/id/244487DDD711C16AFC0644DDFB70F92A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Signorotto, Fiorella;Mancini, Mariana;Ferretti, Nelson	Signorotto, Fiorella, Mancini, Mariana, Ferretti, Nelson (2023): A new small Acanthogonatus Karsch, 1880 (Mygalomorphae, Pycnothelidae) species from Argentinean Patagonia: description of A. messii Signorotto & Ferretti n. sp. and its phylogenetic placement. Zoosystema 45 (17): 499-512, DOI: 10.5252/zoosystema2023v45a17, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/zoosystema2023v45a17_0.pdf
244487DDD711C169FCDA465FFDD7FA75.text	244487DDD711C169FCDA465FFDD7FA75.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Acanthogonatus notatus (Mello-Leitao 1940)	<div><p>Acanthogonatus notatus (Mello-Leitão, 1940)</p> <p>(Fig. 1)</p> <p>Chubutia notata Mello-Leitão, 1940b: 4, f. 1-5 (Dm).</p> <p>Acanthogonatus notatus – Goloboff 1995: 113, f. 100A-E (removed male from synonym of A. patagonicus, contra Gerschman &amp; Schiapelli, 1970: 152, sub Tryssothele).</p> <p>TYPE MATERIAL. — Holotype. Argentina • 1 ♂; Chubut, Gobernador Costa; 8.III.39; M. Birabén leg.; MLP 14260; examined.</p> <p>ADDITIONAL MATERIAL EXAMINED. — Argentina • 1 ♂; Argentina, Chubut, Lago Muster; XI.2017; CAI.</p> <p>DIAGNOSIS. — See Goloboff (1995: 113).</p></div> 	https://treatment.plazi.org/id/244487DDD711C169FCDA465FFDD7FA75	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Signorotto, Fiorella;Mancini, Mariana;Ferretti, Nelson	Signorotto, Fiorella, Mancini, Mariana, Ferretti, Nelson (2023): A new small Acanthogonatus Karsch, 1880 (Mygalomorphae, Pycnothelidae) species from Argentinean Patagonia: description of A. messii Signorotto & Ferretti n. sp. and its phylogenetic placement. Zoosystema 45 (17): 499-512, DOI: 10.5252/zoosystema2023v45a17, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/zoosystema2023v45a17_0.pdf
244487DDD712C165FF18449CFA89F803.text	244487DDD712C165FF18449CFA89F803.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Acanthogonatus messii Signorotto & Mancini & Ferretti 2023	<div><p>Acanthogonatus messii Signorotto &amp; Ferretti n. sp.</p> <p>(Figs 2-6)</p> <p>urn:lsid:zoobank.org:act: F7886060-729F-4F17-A16B-565DB20641DA</p> <p>TYPE MATERIAL. — Holotype. Argentina • 1 ♂; Chubut, Escalante (<a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-67.79444&amp;materialsCitation.latitude=-45.84833" title="Search Plazi for locations around (long -67.79444/lat -45.84833)">near Rada Tilly</a>); 45°50’54”S, 67°47’40”W; 24.XI.2018; N. Ferretti leg.; found walking during night; UNS-M0658.</p> <p>Paratypes. Argentina • 3 ♀; same data as the holotype; 24.XI.2018; excavated from burrows; UNS-M0657 • 1 ♂; same data as the holotype; 24.XI.2018; kept alive, became adult in 7.XII.2019, died in XII.2019; UNS-M0656.</p> <p>ETYMOLOGY. — The specific name is a patronym in honor of Lionel Andrés Messi, an Argentine professional footballer and one of the greatest players of all times, unique winner of seven Ballons d’or.</p> <p>DIAGNOSIS. — Males can be distinguished from the known species, excepting A. chilechico, by the palpal bulb, with basal portion narrower and keel of embolus slightly-developed (Fig. 4 A-D), and by the presence of strong spines on ventral metatarsus I (Fig. 3H, I). Males differ from those of A. chilechico by the presence of labial cuspules (Fig. 3E) and from A. birabeni by the presence of strong spines on ventral metatarsus I (Fig. 3H, I). Males resemble those of A. notatus by the coloration with dark chevron on dorsal abdomen (Fig. 3C), but can be distinguished by the curved embolus without small teeth on apical region (Fig. 4C) and presence of strong spines on ventral metatarsus I (Fig. 3I). Females differ from the known species of the genus by the shape of the spermathecae, with short oval receptacles, and digitiform internal expansions from their base (Fig. 5H).</p> <p>DESCRIPTION</p> <p>Male holotype</p> <p>Color pattern. In life, carapace light brown with dark striae and margins, legs light brown with lighter coxae and trochanter, abdomen light brown with dorsal black chevron; in ethanol, carapace brown with dark striae and margins, abdomen with dorsal black chevron and ventrally light brown (Fig. 2C, D), in ethanol, carapace brown with dark striae and margins, abdomen with dorsal black chevron and ventrally light brown (Fig. 3C, D).</p> <p>Cephalothorax. Total length 9.19. Carapace 4.31 long, 3.47 wide, thoracic region raised. Abdomen 4.66 long, 2.63 wide. Clypeus very narrow, 0.08. Fovea slightly procurved (Fig. 3A), 0.3 long. Eye tubercle 0.59 long, 0.94 wide, slightly elevated. Anterior eye row procurved, posterior row recurved (Fig. 3F). Eyes sizes and interdistances: AME 0.17, ALE 0.2, PME 0.13, PLE 0.18, AME-AME 0.2, AME-ALE 0.06, PME-PME 0.45, PME-PLE 0.03, ALE-PLE 0.13. Chelicerae 2.19 long, 1.43 wide, with 5 small teeth in prolateral row. Rastellum weak formed by long attenuate setae. Intercheliceral tumescence small with 14 thin setae (Fig. 3G). Labium 0.67 long, 0.72 wide, with 7 cuspules (Fig. 3E). Maxillae with 21/18 blunt cuspules on internal basal angle (Fig. 3E). Sternum oval (Fig. 3B), 2.15 long, 1.61 wide. Sternal sigilla: anterior and medium of same size and close to margin, posterior the largest and distant from margin by c. 1 × length.</p> <p>Measurements. Palp: femur 1.95/ patella 0.93/ tibia 1.36/ cymbium 0.88/ total 4.49; legs: I: femur 3.49/ patella 2.06/ tibia 2.26/ metatarsus 3.32/ tarsus 2.19/ total 13.32; II: 3.62/ 1.75/ 2.58/ 3.23/ 2.14/ 13.32; III: 3.65/ 1.86/ 2.6/ 4.23/ 2.45/ 14.79; IV: 3.87/ 1.98/ 3.57/ 4.84/ 3.12/ 17.38.</p> <p>Spination. Palp: tibia: d1-1, p1-1, v2-3. Tarsi of legs I-IV, 0. I: femur: d1-1-1-1-1-1-1-1-1-1; patella: p1-1-1; tibia: p1-1-2-2ap (on common base), r1-1, v2-1-1-1-1-1; metatarsus: v1-2-1. II: femur: d1-1-1-1-1-1-1-1, p1; patella: p1-1-1; tibia: p1-1-1, r1-1, v1-1-1-1-1-1-2ap, metatarsus: d1, p1-1-1, r1-1, v1-1-1-1-1. III: femur: d1-1-1-1-1-1-1, p1-1-1; patella: p1-1-1, r1; tibia: d1, p1-1, r1-1, v2-1-1-3ap; metatarsus: d1-1-1-1-1, p1-1-1-1, r1-1-1ap, v1-1-2ap. IV: femur: d1-1-1-1-1, p1-1-1, r1-1; patella: p1-1, r1; tibia: d1-1-1, p1-1, r1, v1-1-1-1-3ap; metatarsus: d2-1-1-1-1, p1-1-1, r1-1, v2-1-1-3ap. Tarsi I-IV flexible. Scopulae on tarsi I-IV light; I, II entire, III divided by two rows of thin setae, IV divided by three rows of thin setae. Scopulae of metatarsus I entire on 1/2 of length; II entire on 1/3 of length; III, IV absent. Metatarsal preening combs absent from legs I-IV. STC with double row of teeth: I: 12 13 12 12; II: 14 14 12 13; III: 14 13 13 13; IV: 14 14 14 12. Four spinnerets: PMS 0.5 long; PLS: basal segment 1.08 long, median 0.38 long, apical 0.43 long.</p> <p>Palp. Cymbium with elongate dense setae, denser at tip; tibia dorsally with two elongated setae (Fig. 4E, F), ventrally with a deep excavation on apical third; bulb with tegulum globose, embolus thin, slightly curved to retrolateral face on apical half, one well-developed keel, c. 1/3 of embolus length, sperm duct very sinuous (Fig. 4 A-D).</p> <p>Female (paratype UNS-M0657)</p> <p>Color pattern. In life, carapace brown with dark striae and margins, abdomen light brown with dorsal black chevron (Fig. 2A, B); in ethanol, carapace brown with dark striae and margins (Fig. 5A), abdomen with dorsal black chevron and ventrally light brown (Fig. 5C, D).</p> <p>Cephalothorax. Total length 11.93. Carapace 6.43 long, 5.03 wide, thoracic region raised. Abdomen 5.51 long, 3.28 wide. Clypeus very narrow, 0.13. Fovea slightly procurved, 0.7 long. Eye tubercle 0.71 long, 1.3 wide, slightly elevated. Anterior eye row procurved, posterior row recurved (Fig. 5F). Eyes sizes and interdistances: AME 0.2, ALE 0.34, PME 0.18, PLE 0.25, AME-AME 0.26, AME-ALE 0.11, PME-PME 0.58, PME-PLE 0.05, ALE-PLE 0.12. Chelicerae 2.85 long, 2.14 wide, with 5 small teeth in prolateral row. Rastellum weak formed by long attenuate setae. Labium 0.85 long, 0.9 wide, with 1 cuspule (Fig. 5E). Maxillae with 36/34 blunt cuspules on internal basal angle. Sternum oval (Fig. 5B), 3.08 long, 2.5 wide. Sternal sigilla: anterior slightly smaller than medium and close to margin, posterior the largest and distant from margin by c. 1 × length.</p> <p>Measurements. Palp: femur 3.22/ patella 1.82/ tibia 2.04/ cymbium 1.92/ total 9; legs: measurements: I: femur 4.58/ patella 3.04/ tibia 2.87/ metatarsus 3.07/ tarsus 1.64/ total 15.2; II: 4.29/ 2.75/ 2.29/ 2.82/ 1.96/ 14.11; III: 3.81/ 2.29/ 2.08/ 3.64/ 2.29/ 14.11; IV: 4.67/ 2.93/ 3.46/ 4.31/ 2.5/ 17.87.</p> <p>Spination. Palp: tibia: p1ap, v4ap. Tarsi of legs I-IV, 0. I: femur:d1-1-1-1-1-1-1, p1; patella: 0; tibia: p1, v1ap; metatarsus: 0. II: femur: d1-1-1-1; patella: 0; tibia: v1-1; metatarsus: v1-1. III: femur: d1; patella: p1-1; tibia: r1, v1-1ap; metatarsus: d1, p1-1, r1-1, v1-1ap. IV: femur: 0; patella: 0; tibia: r1, v1ap; metatarsus: p1, r1. Scopulae on tarsi I-IV light; I, II entire, III divided by three rows of thin setae, IV divided by four rows of thin setae. Scopulae of metatarsus I, II entire and on full length; III on 1/5 of length; IV absent. Metatarsal preening combs absent from legs I-IV (Fig. 5G). STC with double row of teeth: I: 8 8 8 7; II: 7 8 8 7; III: 9 8 8 8; IV: 8 8 8 6. Four spinnerets: PMS 0.83 long; PLS: basal segment 1.31 long, median 0.40 long, apical 0.55 long.</p> <p>Spermathecae. Each with one globose oval dome with very short duct from which arises an elongated digitiform receptaculum (Fig. 5H).</p> <p>DISTRIBUTION AND NATURAL HISTORY</p> <p>Known only from the type locality (Fig. 6A). The open burrows from females (Fig. 6B, C) were found at night at about 21:00 h in a sandy area with small shrubs. Burrow entrances had a diameter of approximately 15 mm and spiders were actively feeding. One adult male was found walking in the area at 21:50 h in a sandy area close to the female burrows, which is indicative of the reproductive period of the species in November.</p> <p>CLADISTIC ANALYSIS</p> <p>Search with implied weighting (IW) (k-values = 3.122, 3.665, 4.124, 4.877, 5.972 and 7.237) resulted in 3 equally parsimonious trees with 111 steps. The remaining k-values (8.253, 12.832, 16.117 and 25.376) resulted in 8 equally parsimonious trees with 113 steps. The strict consensus of IW resulted in a tree with 113 steps, CI = 42 and RI = 66. The tree in Figure 7 is the most consistent topology from the sensitivity analysis (script iw.run) and correspond to the results of the IW analyses using K-value (concavity) of 16.117.</p></div> 	https://treatment.plazi.org/id/244487DDD712C165FF18449CFA89F803	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Signorotto, Fiorella;Mancini, Mariana;Ferretti, Nelson	Signorotto, Fiorella, Mancini, Mariana, Ferretti, Nelson (2023): A new small Acanthogonatus Karsch, 1880 (Mygalomorphae, Pycnothelidae) species from Argentinean Patagonia: description of A. messii Signorotto & Ferretti n. sp. and its phylogenetic placement. Zoosystema 45 (17): 499-512, DOI: 10.5252/zoosystema2023v45a17, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/zoosystema2023v45a17_0.pdf
244487DDD71FC162FF514194FAABFA0F.text	244487DDD71FC162FF514194FAABFA0F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Acanthogonatus Karsch 1880	<div><p>IDENTIFICATION KEY FOR ACANTHOGONATUS KARSCH, 1880 UPDATED FROM INDICATTI ET AL. (2015)</p> <p>Males</p> <p>Males of A. alegre Goloboff, 1995, A. brunneus (Nicolet, 1849), A. incursus (Chamberlin, 1916), A. juncal Goloboff, 1995, A. mulchen Goloboff, 1995, A. parana Goloboff, 1995, A. peniasco Goloboff, 1995, A. tolhuaca Goloboff, 1995 and A. vilches Goloboff, 1995 are unknown.</p> <p>1. ITC IV absent............................................................................................................................................. 2</p> <p>— ITC IV present.......................................................................................................................................... 16</p> <p>2. Apophysis with two apical laminar spines on the same base; palpal tibia with two dorsal sinuous long setae; bulb with no keels, or with lateral keels............................................................................................................... 3</p> <p>— No tibial apophysis of any kind; ITC I absent; forests in southern Chile and Argentina.............................................................................................................................................................. A. confusus Goloboff, 1995</p> <p>3. Bulb with a lateral keel forming a concavity; central Chile (regions IV, V)........... A. huaquen Goloboff, 1995</p> <p>— Bulb different.............................................................................................................................................. 4</p> <p>4. Dorsal abdomen yellowish with a chevron; apical article of PLS short, triangular; Argentina (dry regions of Patagonia) and southern Chile.................................................................................................................... 5</p> <p>— Dorsal abdomen with pattern formed by numerous mottles; apical article of PLS longer, digitiform; Argentina (north of Patagonia).................................................................................................................................... 9</p> <p>5. Large spiders (about 20 mm total length, carapace over 9 mm; bulb with two lateral flanges delimiting concave triangular area; palpal tibia rather elongate)...................................................... A. patagonicus (Simon, 1905)</p> <p>— Medium to small spiders (total length 15 mm or smaller, carapace below 6 mm); bulb variable; palpal tibia shorter......................................................................................................................................................... 6</p> <p>6. Bulb with low lateral keels (or with single keel); metatarsi I with at least 1 or 2 ventral spines..................... 7</p> <p>— Bulb with more developed lateral keels; metatarsi I with no ventral spines..... A. notatus (Mello-Leitão, 1940)</p> <p>7. Bulb with a single keel; patella III with 1-1-1 P........................................................................................... 8</p> <p>— Bulb with a double keel; patella III with only 0-0-1; slightly larger (carapace length about 5 mm)............................................................................................................................................ A. chilechico Goloboff, 1995</p> <p>8. Bulb with slightly developed keel, maxillae without cuspules................................ A. birabeni Goloboff, 1995</p> <p>— Bulb with well-developed keel, maxillae with more than 15 cuspules..... A. messii Signorotto &amp; Ferretti n. sp.</p> <p>9. Dorsal abdomen blackish with yellowish whitish oblique lines; bulb with widened, flanged tip; extremely common in central-southern Chile (regions IV-VIII)........................................................ A. pissii (Simon, 1889)</p> <p>— Dorsal abdomen with only white dots not forming continuous lines, or mottled; bulb with narrower tip, flanged in the base or without flanges.................................................................................................................... 10</p> <p>10. Bulb with no keels; total length c. 13 mm; central Argentina (Córdoba, San Luis, San Juan, and Buenos Aires)................................................................................................................... A. centralis Goloboff, 1995</p> <p>— Bulb with serrated, curved and long embolus; central Chile Uruguay and southern Brazil......................... 11</p> <p>11. Metatarsus I slightly curved downward; central Chile......................................... A. quilocura Goloboff, 1995</p> <p>— Metatarsus I straight.................................................................................................................................. 12</p> <p>12. Presence of flanges along the embolus....................................................................................................... 13</p> <p>— Absence of flanges on embolus.................................................................................................................. 14</p> <p>13. One flange on palpal embolus apex; southern Brazil............ A. ericae Indicatti, Lucas, Ott &amp; Brescovit, 2008</p> <p>— Bulb with three perpendicular flanges along embolus................................................ A. francki Karsch, 1880</p> <p>14. Bulb with a winglike projection; PLS apical segment digitiform............................. A. recinto Goloboff, 1995</p> <p>— Bulb different; PLS apical segment triangular............................................................................................ 15</p> <p>15. Presence of tibial spur on tibia I; Uruguay and southern Brazil.................................................................................................................................................................. A. tacuariensis (Pérez-Miles &amp; Capocasale, 1982)</p> <p>— Absence of tibial spur on tibia I; Argentina (Patagonia)....................................... A. fuegianus (Simon, 1902)</p> <p>16. Anterior tibia with dense prolateral shield of setae..................................................................................... 17</p> <p>— Anterior tibia without such shield............................................................................................................. 19</p> <p>17. Palpal tibia widest in basal third, and then uniformly tapering; retrolateral thicker setae present along apical 2/3 of article................................................................................................................................................ 18</p> <p>— Palpal tibia of uniform width along medial half, more abruptly narrowed in the apical third; retrolateral thicker setae present only on apical third.......................................................................... A. hualpen Goloboff, 1995</p> <p>18. Bulb with its basal portion rounded, abruptly tapered to form embolus base; basal portion of the bulb duct strongly sinuous.............................................................................................. A. patagallina Goloboff, 1995</p> <p>— Bulb with its basal portion not rounded, tapering more gradually to form embolus base basal portion of the bulb duct little sinuous.................................................................................... A. nahuelbuta Goloboff, 1995</p> <p>19. Tibia I with a strong apical retrolateral megaspine; palpal bulb with twisted embolus; total length less than 5 mm; Brazil (Rio de Janeiro)............... A. minimus Indicatti, Folly-Ramos, Vargas, Lucas &amp; Brescovit, 2015</p> <p>— Tibia I with no retrolateral megaspine; palpal bulb with slightly curved embolus; total length more than 13 mm...................................................................................................................................................... 20</p> <p>20. No apophysis on anterior tibia............................................................................. A. confusus Goloboff, 1995</p> <p>— Low prolateral tibial apophysis, bearing two spines on common base........................................................ 21</p> <p>21. Palpi long, about three times of the cymbium length; embolus c. half-length of palpal bulb................................................................................................................................................. A. subcalpeianus (Nicolet, 1849)</p> <p>— Palpi normal, about two times of the cymbium length; embolus c. 2/3 length of palpal bulb................................................................................................................................ A. campanae (Legendre &amp; Calderón, 1984)</p> <p>Females</p> <p>Females of A. birabeni, A. chilechico and A. patagallina are unknown.</p> <p>1. Claw tufts present; Peru................................................................................................................ A. incursus</p> <p>— Claw tufts absent......................................................................................................................................... 2</p> <p>2. ITC IV absent............................................................................................................................................. 3</p> <p>— ITC IV present.......................................................................................................................................... 17</p> <p>3. Patella IV with 1-1-1................................................................................................................................... 4</p> <p>— Patella IV with 0-0-1 or (more often) no spines at all.................................................................................. 7</p> <p>4. Spermathecae thick, sclerotized..................................................................................................... A. peniasco</p> <p>— Spermathecae slightly sclerotized................................................................................................................. 5</p> <p>5. Spermathecae cactus like; Argentina.............................................................................................. A. centralis</p> <p>— Spermathecae different; Chile...................................................................................................................... 6</p> <p>6. Spermathecae with short duct, slightly curved from the internal side............................................... A. francki</p> <p>— Spermathecae without basal dome, long twisted receptaculum duct................................................ A. recinto</p> <p>7. Apical article of PLS triangular.................................................................................................................... 8</p> <p>— Apical article of PLS longer, digitiform...................................................................................................... 11</p> <p>8. Spermathecae branched (bi- or trifurcated).................................................................................. A. fuegianus</p> <p>— Spermathecae with a basal mound or protuberance..................................................................................... 9</p> <p>9. Small spiders (total length about 12, carapace length 5-6 mm); carapace slightly patterned, with margins and medial line lighter; lateral stripes of dorsal abdominal chevron conspicuous; general coloration yellowish... 10</p> <p>— Larger spiders (total length well over 20 mm, carapace length 10 mm or more); carapace not appreciably patterned; dorsal abdominal pattern limited mostly to cardiac area; general coloration brown with golden hairs................................................................................................................................................ A. patagonicus</p> <p>10. Scopula IV absent................................................................................. A. messii Signorotto &amp; Ferretti n. sp.</p> <p>— Scopula IV light............................................................................................................................. A. notatus</p> <p>11. Spermathecae with a main branch and a lateral secondary internal branch arising from middle of main branch....................................................................................................................................................... 12</p> <p>— Spermathecal duct arising from the inner side of basal mound or protuberance......................................... 13</p> <p>12. Main spermathecal branch widened distally; central Argentina...................................................... A. centralis</p> <p>— Main spermathecal branch not widened distally; eastern Argentina (Entre Rios)............................. A. parana</p> <p>13. Dorsal abdomen blackish with yellow-white oblique lines; spermathecae with low basal dome; central and southern Chile (regions IV-VIII)........................................................................................................ A. pissii</p> <p>— Dorsal abdomen with white dots or spots not forming continuous lines, or yellowish with darker mottles.... 14</p> <p>14. Small spiders (total length about 10 mm, carapace 4 mm or smaller); spermathecae weakly sclerotized, very short duct; patella III with p0-1-1 spines.......................................................................................... A. juncal</p> <p>— Larger (total length 20 mm or more, carapace 8 mm or more); patella III with p1-1-1 spines................... 15</p> <p>15. Spermathecae with blunt basal mound, and duct strongly curved at the base.............................. A. quilocura</p> <p>— Spermathecae with basal mound tapering more gradually.......................................................................... 16</p> <p>16. Carapace brownish, dorsal abdomen irregularly mottled; with (weak) rastellum; spermathecae with basal dome narrow, duct strong curvate to inner side; central Chile................................................................ A. huaquen</p> <p>— Carapace reddish, dorsal abdomen with oblique lines of dots; rastellum absent......................................... 17</p> <p>17. Spermathecae with short copulatory ducts, arising from basal dome side; Uruguay and southern Brazil......................................................................................................................................................... A. tacuariensis</p> <p>— Spermathecae with short copulatory ducts, arising from the basal dome apex; southern Brazil........... A.ericae</p> <p>18. ITC I present............................................................................................................................................ 19</p> <p>— ITC I absent.............................................................................................................................................. 26</p> <p>19. Spermathecae very long, twisted; fovea T-shaped; Brazil (Rio de Janeiro)...................................... A. minimus</p> <p>— Spermathecae short, not twisted; fovea normal, procurved........................................................................ 20</p> <p>20. Spermathecae two wide (but flat) plates..................................................................................................... 21</p> <p>— Spermathecae different.............................................................................................................................. 22</p> <p>21. Sternum long; spermathecae fused, without copulatory duct, with shallow medial notch............. A. mulchen</p> <p>— Sternum normal........................................................................................................................................ 23</p> <p>22. Color uniform blackish; patella III with p0-1-1 spines................................................................. A. tolhuaca</p> <p>— Color brownish, with mottled abdomen; patella III with p0-1-1 or p1-1-1 spines....................... A. brunneus</p> <p>23. Spermathecae strongly sclerotized, with a wide cavity, opening through wide passage................................ 24</p> <p>— Spermathecae weakly sclerotized, flat and with no appreciable cavity; duct opening not conspicuous........ 25</p> <p>24. Spermathecae finger like, strongly curved......................................................... A. nahuelbuta and A. hualpen</p> <p>— Spermathecae wider, shaped like two pockets.................................................................................. A. vilches</p> <p>25. Carapace patterned, legs ringed; spermathecae with short copulatory ducts, arising from the external side of basal dome............................................................................................................................ A. subcalpeianus</p> <p>— Carapace and legs uniform brown; spermathecae single, undivided; central Chile (regions IV, V)..................................................................................................................................................................... A. campanae</p> <p>26. Epigastrium posteriorly produced; spermathecae long; northern Chile (Region II)............................ A. alegre</p> <p>— Epigastrium normal; spermathecae shorter; southern Chile (Regions VIII-X) and Argentina (Neuquén)............................................................................................................................................................. A. confusus</p></div> 	https://treatment.plazi.org/id/244487DDD71FC162FF514194FAABFA0F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Signorotto, Fiorella;Mancini, Mariana;Ferretti, Nelson	Signorotto, Fiorella, Mancini, Mariana, Ferretti, Nelson (2023): A new small Acanthogonatus Karsch, 1880 (Mygalomorphae, Pycnothelidae) species from Argentinean Patagonia: description of A. messii Signorotto & Ferretti n. sp. and its phylogenetic placement. Zoosystema 45 (17): 499-512, DOI: 10.5252/zoosystema2023v45a17, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/zoosystema2023v45a17_0.pdf
