taxonID	type	description	language	source
C93C1B08116C52A793C6CCEBD227D53D.taxon	description	Figs 2, 3, 4, 5 J, 14 E, F	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
C93C1B08116C52A793C6CCEBD227D53D.taxon	diagnosis	Diagnosis and description. See Grismado et al. (2014).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
C93C1B08116C52A793C6CCEBD227D53D.taxon	distribution	Distribution. China (Xizang), India (West Bengal), Nepal (Fig. 1).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
10C194EB85235728AB8A6300B114E3E7.taxon	description	Figs 5 A – H, 6, 7, 14 A, B	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
10C194EB85235728AB8A6300B114E3E7.taxon	etymology	Etymology. The specific name is a noun in apposition taken from the type locality.	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
10C194EB85235728AB8A6300B114E3E7.taxon	diagnosis	Diagnosis. The new species is similar to T. bangla in the shape of the bulb but can be distinguished by the male epigastric region with a small wedge-shaped process (Fig. 5 D, arrow) vs. lacking, but with a row of enlarged setae (Fig. 2 G, arrow); the psembolus with serrated structure at the base (Fig. 6 M, arrow) vs. lacking, instead of cluster of fibers (Fig. 3 I); the reticulated abdominal scutum of the female (Fig. 7 A, C, E) vs. smooth (Fig. 4 A, C, E); and the very small globular structure of the endogyne (Fig. 14 B) vs. very large (Fig. 14 F).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
10C194EB85235728AB8A6300B114E3E7.taxon	description	Description. Male. Body: yellow, legs lighter; habitus as in Fig. 5 A – F; body length 1.59. Carapace (Fig. 5 A, E): 0.87 long, 0.72 wide; sides granulate. Eyes (Fig. 5 A, G): well developed; ALE separated from edge of carapace by one diameter. Mouthparts (Fig. 5 C, G, H): endites slender, distally not branched. Sternum (Fig. 5 C): surface reticulated. Abdomen: 0.63 long, 0.48 wide; sperm pore situated at level of anterior spiracles; apodemes present, posterior spiracles connected by groove; with small wedge-shaped process situated between anterior and posterior spiracles; epigastric region slightly elevated (Fig. 5 D, F). Palp (Fig. 6 A – N): orange; 0.68 long (0.21, 0.12, 0.11, 0.24); femur not enlarged (width / length = 0.46); bulb triangle; psembolus with several rows of serrated structure at base, psembolus proper surrounded by numerous fiber structures. Female (paratype, SYNU - 915). As in male except as noted. Body: habitus as in Fig. 7 A, C, E; body length 2.19. Carapace: 0.97 long, 0.79 wide; Abdomen: 1.37 long, 0.74 wide; dorsal and ventral scutum surface reticulated. Epigastric area (Figs 7 G, 14 A): with recurved, strongly sclerotized arches (sar). Endogyne (Fig. 14 B): with narrow, transverse sclerite (tsc); with anterior large T-shaped sclerite (as) and posterior small globular structure (glo); transverse bars (tba) with pair of lateral apodemes (ap).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
10C194EB85235728AB8A6300B114E3E7.taxon	distribution	Distribution. Known only from the type locality (Fig. 1).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
641F91A29E3F52D5A9F78E846222FE40.taxon	description	Figs 5 I, 8, 9, 10, 14 C, D	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
641F91A29E3F52D5A9F78E846222FE40.taxon	etymology	Etymology. The specific name is a noun in apposition taken from the type locality.	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
641F91A29E3F52D5A9F78E846222FE40.taxon	diagnosis	Diagnosis. Males of this new species are similar to those of T. triseta Tong & Li, 2000 in the branches of psembolus, but can be distinguished by the fused cymbium and bulb (Fig. 9 A – N) vs. cymbium well separated (Tong et al. 2020: fig. 12 A, B) and the coxae IV connected by radial furrow (Fig. 8 D) vs. not connected (Tong et al. 2020: fig. 11 F). Females of the new species can be distinguished from all congeners by the long, narrow posterior spiracles, which are situated at the anterior corner of the postgastric scutum (Fig. 10 C, E) vs. normal size, far away the anterior corner (e. g., Figs 4 G, 7 G, 13 G).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
641F91A29E3F52D5A9F78E846222FE40.taxon	description	Description. Male. Body: reddish-brown, legs yellow; habitus as in Fig. 8 A, C, E; body length 1.61. Carapace (Fig. 8 B, F): 0.81 long, 0.63 wide; sides smooth. Eyes (Fig. 8 B, H): eyes well developed; ALE separated from edge of carapace by 1.25 diameters. Mouthparts (Figs 8 D, H, 5 I): labium distally not branched, with large membranous area at anterior part. Sternum (Fig. 8 D): surface smooth, with large seta pits; with radial furrows between coxae I – II, II – III, III – IV and IV – IV. Abdomen (Fig. 8 G): 0.87 long, 0.55 wide; surface smooth; sperm pore situated between anterior and posterior spiracles; apodemes present, posterior spiracles connected by groove. Palp (Fig. 9 A – N): orange; 0.58 long (0.16, 0.13, 0.08, 0.21); femur elongated (width / length = 0.48); bulb and cymbium fused; psembolus including slender anterior branch (ab), slender dorsal branch (sdb), broad dorsal branch (bdb), and slender posterior branch (pb). Female (paratype, SYNU - 913). As in male except as noted. Body: habitus as in Fig. 10 A, C, E; body length 2.19. Carapace: 0.97 long, 0.79 wide. Abdomen: 1.37 long, 0.74 wide; posterior spiracles narrow and long (psp), situated at anterior corner of postgastric scutum. Epigastric area (Figs 10 G, 14 C): without recurved, strongly sclerotized arches. Endogyne (Fig. 14 D): with narrow, transverse sclerite (tsc); with an anterior large T-shaped sclerite (as) and a posterior small globular structure (glo); transverse bars (tba) with pair of strongly curved, thick lateral apodemes (ap).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
641F91A29E3F52D5A9F78E846222FE40.taxon	distribution	Distribution. Known only from the type locality (Fig. 1).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
44B6743B59B052AB844E77702FC87429.taxon	diagnosis	Diagnosis. See Tong et al. (2020).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
44B6743B59B052AB844E77702FC87429.taxon	distribution	Distribution. From Iran to the Korean Peninsula and south to Sumatra, Indonesia.	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
637D98E602BC57CC952DC91AEBCD039E.taxon	description	Figs 5 K, 11, 12, 13, 14 G, H	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
637D98E602BC57CC952DC91AEBCD039E.taxon	etymology	Etymology. The specific name is a noun in apposition taken from the type locality.	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
637D98E602BC57CC952DC91AEBCD039E.taxon	diagnosis	Diagnosis. The new species is similar to T. longling Tong, Zhang & Li, 2019 in the ridges on posterior part of the male sternum, the small slit of the male epigastric region and the T-shaped sclerite of the endogyne, but can be distinguished by the elongated male palpal femur (Fig. 12 D) vs. globular (Tong et al. 2019: fig. 13 A), the cluster of bristle-like structures (cbs) on the median area of the bulb (Figs 12 A, J) vs. lacking (Tong et al. 2019: fig. 13 A), the long, belt-like structure (bls) of the psembolus (Fig. 12 I) vs. many fiber-like lobes (Tong et al. 2019: fig. 13 B), and the transversally elongated membranous structure (tms) of the endogyne (Fig. 14 H) vs. lacking (Tong et al. 2019: fig. 24 J).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
637D98E602BC57CC952DC91AEBCD039E.taxon	description	Description. Male. Body: yellowish-brown, legs lighter; habitus as in Fig. 11 A, C, E; body length 1.64. Carapace (Fig. 11 B, F): 0.72 long, 0.58 wide; sides granulate. Eyes (Fig. 11 B, F): eyes well developed, nearly equal in size; ALE separated from edge of carapace by 1.4 diameters. Mouthparts (Figs 5 K, 11 D, H): endites distally branched. Sternum (Fig. 11 D): surface smooth; with several rows of ridges in posterior part. Abdomen (Fig. 11 A, C, E, G): 0.84 long, 0.49 wide; surface smooth; sperm pore situated at level of anterior spiracles; with small slit anterior of groove connecting posterior spiracles. Palp (Fig. 12 A – K): orange; 0.54 long (0.17, 0.10, 0.09, 0.16); femur elongated (width / length = 0.52); bulb triangle, with cluster of bristle-like structure (cbs) on median area; psembolus with long, belt-like structure (bls), a lateral curved branch (lb) and broad median branch (mb). Female. Same as male except as noted. Body: length 1.89; habitus as in Fig. 13 A, C, E. Carapace: 0.77 long, 0.63 wide. Abdomen: 1.06 long, 0.67 wide. Epigastric area (Figs 13 A, 14 G): with recurved, strongly sclerotized arches (sar). Endogyne (Fig. 14 H): with narrow, transverse sclerite (tsc) and broad, transversally elongated membranous structure (tms); with anterior slender sclerite (as) and posterior small globular structure (glo); transverse bars (tba) with pair of short lateral apodemes (ap).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
637D98E602BC57CC952DC91AEBCD039E.taxon	distribution	Distribution. Known only from the type locality (Fig. 1).	en	Shi, Songlu, Bian, Dongju, Tong, Yanfeng, Li, Shuqiang (2025): First record of the genus Trilacuna Tong & Li, 2007 (Araneae, Oonopidae) from Xizang, China, with descriptions of three new species and one newly recorded species. ZooKeys 1229: 213-232, DOI: 10.3897/zookeys.1229.145844
