taxonID	type	description	language	source
03B787B68B5EBF6BB9FAFB89FD2BFDCB.taxon	description	Figs 1 A, 2 ‒ 5, Table 1	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B5EBF6BB9FAFB89FD2BFDCB.taxon	type_taxon	Type material. Holotype: female on slide. Thailand, Chaiyaphum province, Khon San district, Tham Prakai Phet (tham = “ cave ” in Thai), altitude 570 m a. s. l., 16.4842 ° N 101.7825 ° E, 30 November 2020 S. Jantarit, A. Nilsai, K. Sarakhamhaeng and K. Jantapaso leg. (sample # THA _ SJ _ CPM 03), dark zone of the cave, by entomological aspirator. Paratypes: same data as holotype, 10 specimens (four females, one male and five subadults on slides).	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B5EBF6BB9FAFB89FD2BFDCB.taxon	materials_examined	Additional material: same data as holotype, 6 specimens (in ethanol) deposited in NHM-PSU. and 6 paratypes (in ethanol) deposited in CRFS-UEPB. Holotype and eight paratypes on slides deposited at NHM-PSU, two paratypes (two subadults) on slides deposited at CRFS-UEPB.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B5EBF6BB9FAFB89FD2BFDCB.taxon	description	Description. Habitus (Fig. 1 A, 2 A). Large sized Entomobryidae. Body length 1.4 ‒ 1.9 mm (holotype 1.5 mm). Eyes absent. Color: whitish in alcohol. Body slender, not bent nor humped at the level of the Th. II., very elongated antennae, legs and furca. Th. II slightly larger than the Th. III; Abd. IV about 3.45 ‒ 4.33 times as long as the Abd. III along the dorsal midline. Pseudopores (Figs 3 H, 4 B ‒ F, 5 A ‒ B). Pseudopores present as round flat disks, smaller than mac sockets (Fig. 4 B), except for the coxae and manubrium where psp are as large as mac sockets. Pseudopores present on various parts of the body: antennae, head, tergites, coxae and manubrium. On antennae, psp located ventro-apically between the tip of antennal segments and the chaetae of the apical row, or just below the apical row of chaetae (two on Ant. I, 2 ‒ 3 on Ant. II, and three on Ant. III). On head, 1 ‒ 2 psp located externally on each peri-antennal area (Fig. 4 B). On tergites, 1 + 1 psp close to the axis from Th. II to Abd. IV (Figs 4 C ‒ F, 5 A ‒ B). Coxae I, II and III with 1 ‒ 2, 2 ‒ 3, and 1 ‒ 2 psp respectively, located close to longitudinal rows of chaetae. On manubrium, 2 + 2 dorso-apical ones on the manubrial plaques (Fig. 3 H). Clypeus and mouthparts (Figs 2 B ‒ C, 2 F ‒ G, 2 I). Clypeal area with three long, smooth prefrontal chaetae; 10 ‒ 12 rather short smooth chaetae of unequal size in the facial area, two of them short and ciliated laterally; and 1 + 1 long smooth lateral chaetae anteriorly (Fig. 2 I). Prelabral and labral chaetae 4 / 5, 5, 4, all thin and smooth; three median chaetae slightly longer than the two lateral ones (35 ‒ 39 vs. 27 ‒ 30 µm) (Fig. 2 G). Distal border of the apical nongranulated median area of the labrum with a relatively narrow, median U- or V-form intrusion into the granulated area dorsally (V-form in the fig. 2 G); apical edge without spines, lacking clear papillae (Fig. 2 G). Maxillary outer lobe with one basal and one apical chaetae (basal chaeta slightly thicker than the apical one) and three smooth sublobal hairs (55 ‒ 58 vs. 40 ‒ 44 µm) (Figs 2 C, G). Labial palp with 0, 5, 0, 4, 4 guards for papillae A ‒ E. Lateral process of labial palp subcylindrical, as thick as normal chaetae with tip beyond the apex of the labial papilla (Figs 2 B, F, G). Mandible apex strong, asymmetrical (left with four, right with five teeth). Antennae (Figs 2 A, D, E). Antennae very long, approximately 4.73 – 5.50 times as long as the cephalic diagonal. Antennal segments ratio as I: II: III: IV = 1: 2.0 – 3.10: 2.58 – 3.20: 6.60 – 8.50 (N = 4). Antennal segments not subdivided nor annulated. Antennal chaetal types not analysed in detail. Smooth spiny mic at the base of antennae: three dorsal, three ventral on Ant. I, one internal, one external and one ventral on Ant. II, one smooth ventral on Ant. I, smooth straight long chaetae on antennae present. Ant. I ventrally with many smooth spiny mic of various sizes in its basal part, many subcylindrical, hyaline sens in its middle to apical part, and many long smooth straight chaetae. Dorsal Ant. II with two paddle-like chaetae. Ant. III organ with five sens; sens one and four subequal, hyaline; sens five acuminate, dark and shorter; sens two and three swollen (Figs 2 A, E). Ant. IV very long, not subdivided, without the apical bulb. Subapical organite not much swollen, slightly enlarged apically, inserted dorsally (Figs 2 A, D). Dorsal head chaetotaxy (Figs 4 A, 4 C ‒ D). Dorsal cephalic chaetotaxy with five antennal chaetae (An 1 – 2, An 3 a 2, An 3 a; An 3 as mic), four anterior (A 0, A 2 – 3 and A 5), three median mac (M 1 – 2, M 4) and six sutural mac (S 2 – 4, 4 e, 5 – 6), Gr. II with two mac (Pi 1 – 2); 5 + 5 scale-like structures present below the sutural mac (sensu Jantarit et al. 2019), inside the integument (Fig. 4 D), (socket of scale-like structures not detected under SEM) (Fig. 4 C); a pair of short cephalic trichobothria, external and close to the middle of the head (Fig. 4 A). Ventral head chaetotaxy (Figs 2 F, 2 H). Chaetae of labial basis all smooth (mrel 1 l 2) chaetae m, e and l 1 subequal, r thin and shortest, ratio of r to m 0.13 ‒ 0.17, l 2 longest (Fig. 2 F). Postlabial chaetae X, X 3, as spiny mic; X 2 and X 4 absent (Fig. 2 H). Each side of the cephalic groove with 9 ‒ 11 chaetae, the anterior six always long and smooth, 7 th – 11 st small or long ciliated chaetae. Tergites (Figs 4 E ‒ F, 5 A ‒ E). Th. II with three (m 1, m 2, m 2 i) medio-medial, two (a 5, m 4) medio-sublateral and 20 posterior mac; 1 + 1 ms and 2 + 2 sens laterally (Fig. 4 E). Th. III with 22 mac, a 6, p 5 – 6 as mac, 2 + 2 sens laterally (Fig. 4 F). Abd. I with six (a 3, a 5, m 2 – 4, m 2 i) central mac, 1 + 1 ms and 1 + 1 sens laterally (Fig. 5 A). Abd. II with two (m 3, m 3 e) central and one (m 5) lateral mac, 2 + 2 tric without modified surrounding chaetae, 1 + 1 sens laterally and 1 + 1 sens above m 3 (Fig. 5 B). Abd. III with one (m 3) central, and three (am 6, pm 6, p 6) lateral mac. 3 + 3 tric without modified surrounding chaetae, 1 + 1 sens laterally, 1 + 1 sens near m 3 (Fig. 5 C). Abd. IV with five central mac (A 3, A 5 ‒ 6, B 5 ‒ 6), sometimes A 6 as mic (N = 2), and six (E 2 – 4, Ee 8, F 1, F 3 a) lateral mac, 2 + 2 tric and about 8 long S-like chaetae anteriorly (just two represented), without modified chaetae (Fig. 5 D). Abd. V with at least 6 obvious mac (a 5, m 2 – 3, m 5, p 1, p 3) and several mes to small mac, and 3 + 3 sens (Fig. 5 E). Abd. VI not analysed. S-chaetae formula from Th. II to Abd. V: 2 + ms, 2 / 1 + ms, 2, 2, ≈ 8, 3; ps and as sens on Abd. IV 1 / 3 as long as S-like chaetae (Figs 4 C – F, 5 A – C). Legs (Figs 3 A ‒ C, G, I, K). Legs long; tita of leg III (Fig. 3 C) slightly longer than tita of legs I (Fig. 3 A) and II (Fig. 3 B). Legs devoid of scales, covered with ordinary ciliated chaetae of various lengths and at least one mic of leg III near the ventro-distal region as smooth chaeta (Fig. 3 K). Tibiotarsi II and III with one large inner ciliate mac at 1 / 3 from basal side (Figs 3 G, I). Trochanteral organ with 14 ‒ 21 smooth, straight, unequal spine-like chaetae. The distal whorl of tita with 10 subequal ciliated mes, irregularly arranged, and usually dorso-apical clavate tenent hair present (one specimen claw III with pointed tenent hair). Smooth, thin and long chaeta close to the tenent hair absent. Ventro-distal smooth chaeta of tita III thick, erected, pointed, rather long. Claw slender and elongated. Unguis with a tiny unpaired inner tooth, a pair of subequal basal teeth at about 33 ‒ 38 % of inner edge from basis, and a tooth of outer edge at about 20 % from basis. Unguiculus without outer tooth, approximately 1 / 2 as long as the inner edge of the claw, rather swollen baso-externally, pointed apically (Figs 3 A ‒ C). Ventral tube (Figs 3 D ‒ E). Ventral tube about three times longer than wide. Lateral flaps with 7 ‒ 9 + 7 ‒ 9 rather long, smooth and thin chaetae (Fig. 3 E). Anterior face with 7 ‒ 9 + 7 ‒ 9 ciliated chaetae, two of them apically larger than the others (Fig. 3 E); posterior face with 2 + 2 long smooth distal chaetae, 1 unpaired smooth chaeta and 1 + 1 lateral smooth spines (as in Cyphoderus), 1 unpaired plus 2 + 2 smooth chaetae, 2 + 2 ciliate chaetae, 1 + 1 lateral smooth spines and 2 + 2 ciliate chaetae at the apex (Fig. 3 D). Furcal complex (Figs 3 F, H, J). Tenaculum with four large teeth of decreasing sizes from the basal to the distal one on each ramus, on a prominent, irregular corpus, with a postero-basal strong serrated chaeta bent distally. Mucrodens 1.34 ‒ 1.50 times longer than the manubrium. Furcula without smooth chaetae. Manubrium densely covered by ciliated chaetae both dorsally and ventrally. Manubrial plaque with 2 + 2 pseudopores and five ciliated chaetae (Fig. 3 H). Distal part of the ventral manubrium with 10 + 10 to 12 + 12 ciliate chaetae (Fig. 3 J). Dens without spines, annulated and covered with ciliated chaetae on both sides. Distal smooth part of dens as long as the mucro. Mucro strong and falcate, basal spine long, nearly reaching the tip of the mucronal tooth (Fig. 3 F). Genital plate. Female genital plate with 2 + 2 genital mic.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B5EBF6BB9FAFB89FD2BFDCB.taxon	biology_ecology	Ecology. Coecobrya satasookea sp. nov. was found in the dark zone of Tham Prakai Phet on the surface of the muddy ground, near the edge of a (seasonal) stream. It was also found in the upper levels of the cave (a small chamber with a passage) on stalagmites, clay, gravel and rock surfaces. This species was found mainly in eutrophic habitats with a rather large population size where piles of guano and organic matter were frequent. The temperature in the cave varies from 22.6 ‒ 27.1 ºC, while the chamber where the species was collected was 22.6 ‒ 24.8 ºC, with a humidity of 76 ‒ 78 %.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B5EBF6BB9FAFB89FD2BFDCB.taxon	etymology	Etymology. Coecobrya satasookea sp. nov. is named in honour of Chutamas Satasook, a director of the Princess Maha Chakri Sirindhorn Natural History Museum, who has been interested in natural sciences and has greatly supported the study of Collembola in Thailand.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B5EBF6BB9FAFB89FD2BFDCB.taxon	discussion	Remarks. Coecobrya satasookea sp. nov. belongs to the highly troglomorphic group of Thai Coecobrya species in presenting very long appendages (antennae, legs and furca), larger body size, and due to its blindness and depigmentation. This new species differs from other highly troglomorphic species especially in the number of posterior mac on Th. II (20), (see Table 1). It is most similar to C. whitteni and C. troglobia from caves in Khon Kaen province. The cave where this new species is found is, in a straight line, only about 44 km from C. whitteni from Tham Nayn Noi and about 41 km from C. troglobia from Tham Phaya Nakharat. They share similar morphological features like body and antennal length, in presenting long smooth straight chaetae on antennae, having the same number of prefontal clypeus chaetae, number of sublobal hairs on maxillary outer lobe, number of mac on Th. III, Abd. I, number of central mac on Abd. II, Abd. III and of lateral mac on Abd. III, having tenent hairs either clavate or pointed, and with the mucronal spine nearly reaching the mucronal apex (see Table 1 for a detailed comparison). However, C. satasookea sp. nov. differs from the two closely related species by presenting two paddle-like chaetae on Ant. II, (not present in the two described species); number of chaetae in facial area of clypeus (8 ‒ 10 s 2 C in C. satasookea sp. nov. vs 2 s 6 c in C. whitteni and 2 s 4 c in C. troglobia); number of dorsal head chaetae (An = five vs An = two in C. whitteni and An = four in C. troglobia); number of Gr. II chaetae (two vs four in both C. whitteni and C. troglobia); number of mac on medio-sublateral Th. II (two vs one in C. whitteni and four in C. troglobia); ms chaeta in Abd. III (present vs absent in both C. whitteni and C. troglobia) and number of claw inner teeth (two vs three in C. whitteni and four in C. troglobia).	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B55BF73B9FAFF49FF79FC2B.taxon	description	Figs 1 B, 6 ‒ 9, Table 1	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B55BF73B9FAFF49FF79FC2B.taxon	type_taxon	Type material. Holotype: female on slide. Thailand, Phrae province, Long district, unnamed cave, altitude 181 m a. s. l., approximately 18.02 ° N 099.94 ° E. 16 May 2018 S. Jantarit, A. Nilsai, K. Sarakhamhaeng and K. Jantapaso leg. (sample # THA _ SJ _ PRE 01), dark zone of the cave, by entomological aspirator. Paratypes: same data as holotype, four specimens (two females and two subadults on slides)	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B55BF73B9FAFF49FF79FC2B.taxon	materials_examined	Additional material: same data as holotype, six specimens (in ethanol) deposited in NHM-PSU and six specimens (in ethanol) deposited in CRFS-UEPB. Holotype and four paratypes on slides deposited in NHM-PSU.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B55BF73B9FAFF49FF79FC2B.taxon	description	Description. Habitus (Figs 1 B, 6 A). Medium sized Entomobryidae. Body length 1.3 ‒ 1.5 mm (holotype 1.3 mm). Eyes absent. Color: whitish in alcohol. Body slender, not bent nor humped at the level of Th. II., moderately long antennae, legs and furca. Th. II slightly larger than the Th. III; Abd. IV about 3.05 ‒ 3.93 times as long as the Abd. III along the dorsal midline. Pseudopores (Figs 7 A, 8 A, D, 9 A ‒ E). Pseudopores present as round flat disks, smaller than mac sockets (Fig. 7 A), except for the coxae and manubrium where psp are as large as mac sockets. Pseudopores present on various parts of the body: antennae, head, tergites, coxae and manubrium. On antennae, psp located ventro-apically between the tip of antennal segments and the chaetae of the apical row, or just below the apical row of chaetae (two on Ant. I, 2 ‒ 3 on Ant. II, and three on Ant. III). On head, 1 ‒ 2 psp located externally on each peri-antennal area (Fig. 8 A). On tergites, 1 + 1 psp close to the axis from Th. II to Abd. IV (Figs 8 D, 9 A ‒ E). Coxae I, II and III with 1 ‒ 2, 2 ‒ 3, and 1 ‒ 2 psp respectively, located close to longitudinal rows of chaetae. On manubrium, 2 + 2 dorso-apical ones on the manubrial plaques (Fig. 7 A). Clypeus and mouthparts (Figs 6 D ‒ E, G, 8 B). Clypeal area with nine chaetae arranged in three rows, with three rather long smooth chaetae in the prefrontal area; 1 + 1 rather short ciliated and 1 + 1 rather long smooth chaetae of subequal sizes in the facial area; and 1 + 1 rather long smooth lateral chaetae anteriorly (Fig. 6 G). Prelabral and labral chaetae 4 / 5, 5, 4, all thin and smooth; median three chaetae of the second line longer than the lateral ones (21 ‒ 23 vs. 9 ‒ 11 µm); median three chaetae of the third line longer than the lateral ones (23 ‒ 25 vs. 26 ‒ 28 µm) (Fig. 8 B). Distal border of the apical non-granulated median area of the labrum with a relatively narrow median U- or Vform intrusion (U form in the Fig. 8 B) into the granulated area dorsally; apical edge without spines, lacking clear papillae. Maxillary outer lobe with one basal and one apical chaetae (basal chaeta thicker than the apical one) and three smooth sublobal hairs (36 ‒ 38 vs. 17 ‒ 19 µm) (Fig. 6 E). Labial palp with 0, 5, 0, 4, 4 guards for papillae A ‒ E. Lateral process of labial palp subcylindrical, as thick as normal chaetae with tip beyond the apex of the labial papilla (Fig. 6 D). Mandible apex strong, asymmetrical (left with four, right with five teeth). Antennae (Figs 6 A, C). Antennae moderately long, approximately 2.4 – 2.6 times as long as the cephalic diagonal. Antennal segments ratio as I: II: III: IV = 1: 1.13 – 1.55: 1.16 – 1.33: 1.90 – 2.06 (N = 3). Antennal segments not subdivided nor annulated. Antennal chaetal types not analysed in detail. Smooth spiny mic at base of antennae: three dorsal, three ventral on Ant. I, one internal, one external and one ventral on Ant. II, one smooth ventral on Ant. I, smooth straight long chaetae on antennae present. Ant. I ventrally with many smooth spiny mic of various sizes in its basal part, many subcylindrical, hyaline sens in its middle to apical part, and many long smooth straight chaetae. Dorsal Ant. II with two paddle-like chaetae. Ant. III organ with five sens; sens one and four subequal, hyaline; sens five acuminate, dark and shorter; sens two and three swollen. Ant. IV not subdivided, without the apical bulb. Subapical organite not much swollen, slightly enlarged apically, inserted dorsally (Fig. 6 C). Dorsal head chaetotaxy (Fig. 8 A). Dorsal cephalic chaetotaxy with five antennal chaetae (An 1 – 2, An 3 a 2, An 3 a; An 3 as mic), four anterior (A 0, A 2 – 3 and A 5), three median (M 1 – 2, M 4) and eight sutural mac (S 0, S 1 – 4, 4 e, 5 – 6), Gr. II with five mac (Pi 1 – 3, Pa 1, Pp 1 a); 5 + 5 scale-like structures present below the sutural mac, inside the integument (like in Fig. 4 D), (socket of scale-like structures not detected under SEM) (like in Fig. 4 C); a pair of short cephalic trichobothria, external and close to the middle of the head (Fig. 8 A). Ventral head chaetotaxy (Figs 6 B, F, H). Chaetae of labial basis all smooth M 1 m 2 rel 1 l 2 (or Mimrel 1 l 2 sensu Zhang & Pan 2020), chaetae m, e and l 1 subequal, r thin and shortest, ratio of r to m 2 0.10 ‒ 0.19 (Figs 6 B, 6 F). Postlabial chaetae H 1 ciliated, X, X 2, X 4 as spiny mic; X 3 absent (Fig. 6 F). Each side of the cephalic groove with seven chaetae, the first anterior 1 st – 3 rd always long and smooth, 4 th – 7 th always ciliated, sometimes small or long chaetae (Figs. 6 F. 6 H). Tergites (Figs 8 D, 9 A – F). Th. II with four (m 1, m 1 i, m 2, m 2 i) medio-medial, four (a 5, m 4, m 4 i, m 4 p) mediosublateral and 34 posterior mac; 1 + 1 ms and 2 + 2 sens laterally (Fig. 8 D). Th. III with 40 mac, m 6 and m 6 ai as mac, 2 + 2 sens laterally (Fig. 9 A). Abd. I with eight (a 1, a 1 e, a 2 ‒ 3, a 5, m 2 – 4) central mac, 1 + 1 ms and 1 + 1 sens laterally (Fig. 9 B). Abd. II with five (a 2 ‒ 3, m 3, m 3 e, m 3 ep) central and one (m 5) lateral mac. 2 + 2 tric without modified surrounding chaetae, 1 + 1 sens laterally and 1 + 1 sens above m 3 (Fig. 9 C). Abd. III with two (a 2, m 3) central, and three (am 6, pm 6, p 6) lateral mac. 3 + 3 tric without modified surrounding chaetae, 1 + 1 sens laterally, 1 + 1 sens near a 2 (Fig. 9 D). Abd. IV with seven central mac (A 3, A 5 ‒ 6, B 4 ‒ 6, Sm) and nine (D 3, E 2, E 2 p, E 3 – 4, Ee 8, F 1 – 2, F 3 a) lateral mac, 2 + 2 tric and about 8 long S-like chaetae anteriorly, without modified chaetae (Fig. 9 E). Abd. V with at least eight obvious mac (a 5, m 2 ‒ 3, m 5, p 1, p 3 ‒ 5) and several mes or small mac, and 3 + 3 sens (Fig. 9 F). Abd. VI not analysed. S-chaetae formula from Th. II to Abd. V: 2 + ms, 2 / 1 + ms, 2, 2, ≈ 8, 3; ps and as sens on Abd. IV 1 / 2 as long as S-like chaetae (Figs 8 D, 9 A – F). Legs (Figs 7 C ‒ F, 8 C). Legs moderately long; tita of leg III slightly longer than tita of legs I and II. Legs devoid of scales, covered with ordinary ciliated chaetae of various lengths, mic not seen. Tibiotarsi II and III (Fig. 7 C) with one large inner ciliated mac at about 1 / 3 from basal side. Trochanteral organ with about 18 smooth, straight, unequal spinelike chaetae (Fig. 8 C). The distal whorl of tita with 9 ‒ 10 subequal ciliated mes, irregularly arranged, and dorso-apical pointed tenent hair present. Smooth, thin and long chaeta close to the tenent hair absent. Ventro-distal smooth chaeta of tita III thick, erected, pointed, rather short. Claw elongated. Unguis with one small unpaired inner tooth at 53 ‒ 61 %, and a pair of subequal basal teeth at about 46 ‒ 50 % of inner edge from basis. Unguiculus approximately 2 / 3 as long as the inner edge of the claw, narrow and not swollen baso-externally, pointed apically, with a few minute outer teeth, often inconspicuous in the middle of its length in claw II and III, without outer teeth in claw I (Figs 7 D ‒ F). Ventral tube (Figs 8 E ‒ G). Ventral tube two to three times longer than wide. Lateral flaps with 6 ‒ 8 + 6 ‒ 8 chaetae, all smooth chaetae of unequal sizes. (Fig. 8 E). Anterior face with 6 ‒ 8 + 6 ‒ 8 ciliated chaetae, 2 of them apically larger than the others (Fig. 8 G); posterior face with 2 + 2 more apical smooth chaetae 1 unpaired ciliated chaeta just under the pair of smooth chaetae, 1 + 1 smooth chaeta at the distal region, the middle chaetae with seven chaetae (three smooth and four ciliated chaetae of unequal sizes) (Fig. 8 F). Furcal complex (Figs 6 I, 7 A ‒ B). Tenaculum with four large teeth of decreasing sizes from the basal to the distal one on each ramus, on a prominent, irregular corpus, with a postero-basal strong serrated chaeta bent distally. Mucrodens 1.30 ‒ 1.33 times longer than the manubrium. Furcula without smooth chaetae. Manubrium densely covered by ciliated chaetae both dorsally and ventrally. Manubrial plaque with 2 + 2 pseudopores and two ciliated chaetae (Fig. 7 A). Distal part of the ventral manubrium with 10 + 10 ciliate chaetae (Fig. 7 B). Dens without spines, annulated and covered with ciliated chaetae on both sides. Distal smooth part of dens as long as the mucro. Mucro strong and falcate, basal spine long, beyond the tip of the mucronal tooth (Fig. 6 I). Genital plate. Female genital plate with 2 + 2 genital mic.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B55BF73B9FAFF49FF79FC2B.taxon	biology_ecology	Ecology. Coecobrya cavicola sp. nov. is restricted to the dark zone of the cave where it was found, in an oligotrophic environment with a rather large population of individuals. Most specimens were found on the cave floor, which was muddy ground, on stalagmites and on the rock walls. The temperature in the dark zone was 25.0 ‒ 26.2 ° C and the relative humidity was 85 ‒ 91 %.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B55BF73B9FAFF49FF79FC2B.taxon	etymology	Etymology. The name of the new species is derived from the Latin stem “ cav- ” which means “ hole ” and “ col- ” which means “ to dwell ”, referring to the habitat of this new species which is restricted to the subterranean environment.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B55BF73B9FAFF49FF79FC2B.taxon	discussion	Remarks. The overall profile of Coecobrya cavicola sp. nov. is intermediate between the non-troglomorphic and troglomorphic groups of species, as it is rather small, and its antennae are not elongated compared to other described highly troglomorphic species (see Table 3). However, here it is placed into the troglomorphic group as it has rather moderately long appendages, slender and elongated claws, as well as being eyeless and depigmented. It is also worth noting that its habitat is an oligotrophic area within the wet and humid dark zone of a cave. Among all the described troglomorphic Coecobrya species in Thailand, C. cavicola sp. nov. differs from them especially in the number of posterior mac on Th. II (20), and the number of mac on Abd. I (5), (Table 1). It is apparently closer to C. cavicta from a cave in Satun province, southern Thailand, by having similar antennal length (Ant. / head = 2.4 ‒ 2.6 times); long smooth straight chaetae on Ant. II present; number of dorsal head in A (4 mac) and M areas (3 mac); number of sublobal hairs of labial palp (3), number of mac on the medio-sublateral area of Th. II (3); lateral mac of Abd. III (3) and pointed tenent hairs. However, the new species is clearly different from C. cavicta in: the number of dorsal head mac of An area (2 vs 4); number of chaetae in Gr. II (5 vs 4); labial chaetae formula (M 1 m 2 rel 1 l 2 vs mrel 1 l 2); number of chaetae along the cephalic groove (3 s 1 ‒ 4 c vs 3 ‒ 4 s 7 ‒ 8 c); number of mac on medio-medial area of Th. II (4 vs 3); posterior mac of Th. II (34 vs 30 ‒ 31); mac on Th. III (40 vs 35); central mac on Abd. II (5 vs 3); central mac on Abd. III (2 vs 1); ms on And. III (present vs absent); lateral mac on Abd. IV (8 vs 11); number of smooth chaetae of the trochanteral organ (18 vs 15 ‒ 16); number of chaetae on manubrial plaque (2 vs 4); number of chaetae on ventraldistal part of manubrium (10 vs 13) and mucronal spine (beyond vs nearly reaching the mucronal apex).	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B4CBF7BB9FAFC0CFE12FAD3.taxon	description	Figs 1 C, 10 ‒ 12, Table 2	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B4CBF7BB9FAFC0CFE12FAD3.taxon	type_taxon	Type material. Holotype: female on slide. Thailand, Ratchaburi province, Chom Bung district, Tham Chom Pon, altitude 100 m a. s. l., 13.6256 ° N 099.5875 ° E, 25 November 2018 S. Jantarit, K. Sarakhamhaeng and K. Jantapaso leg. (sample # THA _ SJ _ PBR 03), entrance, middle and dark zones of the cave, by entomological aspirator. Paratypes: same data as holotype, 6 specimens (four females and two subadults on slides).	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B4CBF7BB9FAFC0CFE12FAD3.taxon	materials_examined	Additional material: same data as holotype, 20 specimens (in ethanol) in NHM-PSU and 24 specimens (in ethanol) in CRFS-UEPB. Holotype and six paratypes on slides deposited in NHM-PSU.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B4CBF7BB9FAFC0CFE12FAD3.taxon	description	Description. Habitus (Figs 1 C, 10 A, C, 12 A). Small sized Entomobryidae. Body length 1.0 ‒ 1.4 mm (holotype 1.4 mm). Eyes 1 + 1 well-developed (Figs 10 A, 10 C, 12 A). Color: whitish in alcohol. Body slender, not bent nor humped at the level of the Th. II, elongated antennae, legs and furca. Th. II slightly larger than the Th. III; Abd. IV about 3.16 ‒ 3.50 times as long as the Abd. III along the dorsal midline. Pseudopores (Figs 10 F, 12 A ‒ G). Pseudopores present as round flat disks, smaller than mac sockets, except for the coxae and manubrium where psp are as large as mac sockets (Fig. 10 F). Pseudopores present on various parts of the body: antennae, head, tergites, coxae and manubrium. On antennae, psp located ventro-apically between the tip of antennal segments and the chaetae of the apical row, or just below the apical row of chaetae (two on Ant. I, 2 ‒ 3 on Ant. II, and three on Ant. III). On head, 1 ‒ 2 psp located externally on each peri-antennal area (Fig. 12 A). On tergites, 1 + 1 psp close to the axis from Th. II to Abd. IV (Figs 12 B ‒ G). Coxae I, II and III with 1 ‒ 2, 2 ‒ 3, and 1 ‒ 2 psp respectively, located close to longitudinal rows of chaetae. On manubrium, 2 + 2 dorso-apical ones on the manubrial plaques (Fig. 10 F). Clypeus and mouthparts (Figs 10 E, 11 A ‒ B, 11 D ‒ E). Clypeal area with 11 chaetae arranged in three rows, with three rather long smooth chaetae in the prefrontal area; seven chaetae arranged asymmetrically (five smooth, rather long chaetae of unequal sizes, one ciliated and one mic; and 1 + 1 rather long smooth lateral chaetae anteriorly (Fig. 10 E). Prelabral and labral chaetae 4 / 5, 5, 4, all thin and smooth; one median shorter than the lateral ones (23 ‒ 25 vs. 18 ‒ 20 µm) (Fig. 11 B). Distal border of the apical non-granulated median area of the labrum with a relatively narrow median U- or V-form intrusion (V form in Fig. 11 B) into the granulated area dorsally; apical edge without spines, lacking clear papillae. Maxillary outer lobe with one basal and one apical chaeta (basal chaeta thicker than the apical one) and three smooth sublobal hairs (Fig. 11 A). Labial palp with 0, 5, 0, 4, 4 guards for papillae A ‒ E. Lateral process of labial palp subcylindrical, as thick as normal chaetae with tip beyond the apex of the labial papilla (Fig. 11 E). Mandible apex strong, asymmetrical (left with four, right with five teeth) (Fig. 11 D). Antennae (Figs 10 A – B, 10 D). Antennae moderately long, approximately 2.09 – 2.84 times as long as the cephalic diagonal (Fig. 10 A). Antennal segments ratio as I: II: III: IV = 1: 1.30 – 2.27: 1.40 – 1.75: 2.09 – 2.83 (N = 6). Antennal segments not subdivided nor annulated. Antennal chaetal types not analysed in detail. Smooth spiny mic at the base of antennae: three dorsal, three ventral on Ant. I, one internal, one external and one ventral on Ant. II, one smooth ventral on Ant. I, smooth straight long chaetae on antennae present. Ant. I ventrally with many smooth spiny mic of various sizes in its basal part, many subcylindrical, hyaline sens in its middle to apical part, and many long smooth straight chaetae. Dorsal Ant. II with 2 – 3 s-like chaetae (Fig. 10 D). Ant. III organ with five sens; sens one and four subequal, hyaline; sens five acuminate, dark and shorter; sens two and three swollen (Fig. 10 B). Ant. IV short, not subdivided, without the apical bulb. Subapical organite not much swollen, slightly enlarged apically, inserted dorsally. Dorsal head chaetotax y (Fig. 12 A). Dorsal cephalic chaetotaxy with five antennal chaetae (An 1 – 2, An 3 a 2, An 3 a; An 3 as mic), four anterior (A 0, A 2 – 3, A 5), three median (M 1 – 2, M 4) and eight sutural mac (S 0, S 1 – 4, S 4 e, S 5 – 6), sometimes S 5, S 6 as mic; Gr. II with three mac (Pi 1 – 3); 5 + 5 scale-like structures not present below the sutural mac inside the integument; a pair of short cephalic trichobothria, external and close to the middle of the head (Fig. 12 A). Ventral head chaetotaxy (Fig. 11 F). Chaetae of labial basis all smooth (mrel 1 l 2) chaetae m, e l 1 and l 2 subequal, r as mic, thin and shortest, ratio of r to m 0.46 (Fig. 11 F). Postlabial chaetae X 2 smooth, X long and smooth, and X 4 smooth chaetae, X 1 and X 3 absent. Each side of the cephalic groove with 6 – 8 chaetae, the anterior four always long and smooth, 5 th – 8 th always ciliated mixed of small to long chaetae (Fig. 11 F). Tergites (Figs 12 B – G). Th. II with three (m 1, m 2, m 2 i) medio-medial, four (a 5, m 4, m 4 i, m 4 p) medio-sublateral and 22 posterior mac; 1 + 1 ms and 2 + 2 sens laterally (Fig. 12 B). Th. III with 26 mac, a 6 i and m 6 i as mac, 2 + 2 sens laterally (Fig. 12 C). Abd. I with six (a 3, a 5, m 2 – 4, m 2 i) central mac, 1 + 1 ms and 1 + 1 sens laterally (Fig. 12 D). Abd. II with four (a 2, m 3, m 3 e, m 3 ep) central and one (m 5) lateral mac; 2 + 2 tric without modified surrounding chaetae; 1 + 1 sens laterally and 1 + 1 sens near m 3 (Fig. 12 E). Abd. III with one (m 3) central, and three (am 6, pm 6, p 6) lateral mac. 3 + 3 tric without modified surrounding chaetae, 1 + 1 sens laterally, 1 + 1 sens near m 3 (Fig. 12 F). bd. IV with seven central mac (A 3, A 6, B 4 ‒ 6, Si, Sm) and seven (D 3, E 2 – 4, Ee 8, F 1, F 3 a) lateral mac, 2 + 2 tric and about 12 long S-like chaetae anteriorly (only six represented), without modified chaetae (Fig. 12 G). Abd. V and VI not clearly seen in all specimens and not analysed. S-chaetae formula from Th. II to Abd. V: 2 + ms, 2 / 1 + ms, 2, 2, ≈ 12, 3; ps and as sens on Abd. IV 1 / 3 as long as S-like chaetae (Figs 12 B – G). Legs (Figs 10 I ‒ K, 10 H, 11 G). Legs long; tita of leg III (Fig. 10 K) slightly longer than tita of legs I and II. Legs devoid of scales, covered with ordinary ciliated chaetae of various lengths and one mic of leg III near the ventrodistal region as smooth chaeta (Fig. 10 H). Trochanteral organ with 21 ‒ 25 smooth, straight, unequal spine-like chaetae (Fig. 11 G). The distal whorl of tita with 8 ‒ 9 subequal ciliated mes, irregularly arranged, and usually dorsoapical clavate tenent hair present (one specimen with pointed tenent hair in claw I). Smooth, thin and long chaeta close to the tenent hair absent. Ventro-distal smooth chaeta of tita III thick, erected, pointed, rather short. Claw small, moderately elongated. Unguis with one strong unpaired inner tooth at about 70 % from base of the claw, and a pair of subequal basal teeth at about 57 ‒ 60 % of inner edge from basis. External edge of unguis with a strong tooth at about 50 % of claw I and II and about 20 % of claw III. Unguiculus approximately 1 / 2 as long as the inner edge of the claw, rather swollen baso-externally, pointed apically, with one tiny inner tooth at 15 % only in claw I, and at least five to six minute outer teeth, often inconspicuous in the middle of its length (Figs 10 I ‒ K). Ventral tube (Figs 11 C, 11 H). Ventral tube two to three times longer than wide. Lateral flaps with 6 ‒ 10 + 6 ‒ 10 chaetae, usually with 6 ‒ 8 long smooth chaetae; sometimes with 1 ‒ 2 ciliated present (in the holotype) (Fig. 11 C). Anterior face with 5 ‒ 6 + 5 ‒ 6 ciliated chaetae, 2 of them apically larger than the others (Fig. 11 H); posterior face with 2 + 2 long, smooth chaetae distally, the middle region with 2 + 2 mics, and 2 + 2 long and smooth chaetae proximally (Fig. 11 C). Furcal complex (Figs 10 F ‒ G, 11 I). Tenaculum with four large teeth of decreasing sizes from the basal to the distal one on each ramus, on a prominent, irregular corpus, with a postero-basal strong serrated chaeta bent distally. Mucrodens 1.22 ‒ 1.52 times longer than the manubrium. Furcula without smooth chaetae. Manubrium densely covered by ciliated chaetae both dorsally and ventrally. Manubrial plaque with 2 + 2 pseudopores and two or three ciliated chaetae (Fig. 10 F). Distal part of the ventral manubrium with 6 + 6 ciliate chaetae (Fig. 11 I). Dens without spines, annulated and covered with ciliated chaetae on both sides. Distal smooth part of dens as long as the mucro. Mucro strong and falcate, basal spine long, beyond the tip of the mucronal tooth (Fig. 10 G). Genital plate. Female genital plate with 2 + 2 genital mic.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B4CBF7BB9FAFC0CFE12FAD3.taxon	biology_ecology	Ecology. Coecobrya chompon sp. nov. was found on the floor of Tham Chom Pon, in an area covered by bat guano (a meso to eutrophic habitat), with a large number of individuals in the dark zone of a cave. The temperature in the chamber was 26.4 ‒ 26.6 ºC and the humidity was 75 ‒ 82 %. The cave is well known as an attractive show cave with a length of 290 m. At least 21 species of fauna are already recorded from Tham Chom Pon: one planarian, seven copepods, one beetle and one fly, plus 11 species of bat (Ellis, personal communication), the latter providing food sources for the subterranean invertebrates found in the cave, including the new species.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B4CBF7BB9FAFC0CFE12FAD3.taxon	etymology	Etymology. The name of the new species refers to the type locality where it was discovered.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
03B787B68B4CBF7BB9FAFC0CFE12FAD3.taxon	discussion	Remarks. Coecobrya chompon sp. nov. belongs to the boneti - group by presenting 1 + 1 eyes. Within this group, the new species differs from the others especially by the number of lateral mac chaetae on Abd. IV (7), (see Table 2). It looks closer to C. boneti (Denis, 1948) from Dalat, Vietnam by presenting 1 + 1 eyes, similar body length, presence of long smooth straight and s-like chaetae on antennae, labial chaetae formula (mrel 1 l 2), number of mac on dorsal head (An = 4, M = 3), medio-medial mac on Th. II (3), medio-sublateral mac on Th. II (3); mac on Abd. I (6), central mac of Abd. II (4), central mac in Abd. III (1), lateral mac on Abd. III (3), presence of ms on Abd. III, and number of ungual inner teeth (3). However, the new species clearly differs from C. boneti in a longer antennal length (2.1 ‒ 2.84 vs 1.9 ‒ 2.1); number of mac on Gr. II (3 vs 4); posterior mac on Th. II (15 ‒ 18 vs 20 ‒ 24); central mac on Abd. IV (7 vs 6); lateral mac in Abd. IV (7 vs 6); tenent hair (clavate vs pointed), number of chaetae in posterior face of ventral tube (18 ‒ 20 vs 8); number of smooth, spiny chaetae on trochanteral organ (21 ‒ 25 vs 11 ‒ 15); and mucronal spine (nearly vs reaching the mucronal apex). A discussion concerning the variability within the boneti - group is presented below.	en	Nilsai, Areeruk, Zeppelini, Douglas, Bellini, Bruno C., Lima, Estevam C. A., Jantarit, Sopark (2022): First record of the boneti-group of Coecobrya Yosii, 1956 (Collembola Entomobryidae) from Thailand, with the description of three new cave species of the genus. Zootaxa 5214 (3): 365-392, DOI: https://doi.org/10.11646/zootaxa.5214.3.3
