AnimaliaAraneaeHypochilidaeLinYejieLiShuqiangTaxonomic studies on the genus Ectatosticta (Araneae, Hypochilidae) from China, with descriptions of two new speciesZookeys2972020954172910.3897/zookeys.954.52254AD8B7D44-D710-5F24-85FD-C90139F8C4D8 Ectatosticta xuanzang http://zoobank.org/3A050541-598F-4349-8B86-C21E11F5B0CB sp. nov.Figs 5D, 6G–K, 7C, D, 8Type material.

Holotype ♀(IZCNS-Ar40373), China, Tibet Autonomous Region, Lhoka, Cona County, Marmang, Lebugou, Yelang Valley, 27.8682N, 91.8110E, elevation ca. 3118 m, 12.X.2019, Yejie Lin leg. Paratypes 5♀ (IZCNS-Ar40374–Ar40378), same data as holotype.

Etymology.

The species is named after Xuanzang, a character in the classic Chinese novel Journey to the West, noun.

Diagnosis.

Females of E. xuanzang sp. nov. can be distinguished by the ratio of the length of the inner spermathecae to the outer spermathecae of almost 1:3 (Figs 5D, 6G–K) (vs. almost 1:1 in E. davidi and 1:2 to 1:1 in E. deltshevi (Figs 5A, B, 6A–C, F)) and the ratio of leg I length to the carapace length is almost 1:8 (vs. almost 1:6 in E. wukong sp. nov. and E. deltshevi and 1.7 in E. davidi).

10.3897/zookeys.954.52254.figure648BF284D-B45C-5B51-816B-B93ADA83FD5B

Ectatosticta spp., variation of female genitalia (red line, inner spermathecae (A–C, F–K) or spermathecae (D, E); green line, outer spermathecae) A–CE. deltshevi, females from Qinghai (type locality) D, EE. wukong sp. nov., paratypes FE. davidi, females from Shaanxi G–KE. xuanzang sp. nov., paratypes. Scale bars: 0.1 mm.

https://binary.pensoft.net/fig/436978Description.

Female. Total length 12.59, carapace 6.03 long, 3.60 wide, opisthosoma 6.22 long, 4.40 wide. Eye sizes and interdistances: AME 0.15, ALE 0.31, PME 0.29, PLE 0.28, AME–AME 0.19, AME–ALE 0.37, PME–PME 0.42, PME–PLE 0.27, AME–PME 0.07, ALE–PLE 0.06. Clypeus height 0.45. Chelicerae with seven (n = 3) or eight (n = 3) promarginal and 6–9 (6(n = 1), 7(n = 4), 9(n = 1)) retromarginal teeth. Leg measurements: Leg I: 51.47 (15.45 + 16.28 + 12.95 + 6.79), leg II: 47.88 (14.03 + 16.22 + 11.60 + 6.03), leg III: 37.66 (11.67 + 12.50 + 9.04 + 4.45), leg IV: 44.23 (12.31 + 14.49 + 12.11 + 5.32). Leg formula: 1243.

Female genitalia (Figs 5D, 6G–K) simple, with two pairs of slightly curved spermathecae. Inner spermathecae small, outer spermathecae curved, three times the length of inner spermathecae.

10.3897/zookeys.954.52254.figure752FA32A3-D911-54C9-878D-F647A8981EF7

Photos of live Ectatosticta spp. AE. deltshevi, female from Qinghai BE. deltshevi and web CE. xuanzang sp. nov., holotype from Tibet DE. xuanzang and web E Egg sac F A typical web of Ectatosticta. Egg sac marked with green arrow, spider marked with red arrow and assembled nymphs marked with yellow rectangle.

https://binary.pensoft.net/fig/436979Male.

Unknown.

Distribution.

Known only from the type locality.

National history.

In damp rocky areas, hiding between huge stones. They build simple sheet webs without a tube-retreat.

10.3897/zookeys.954.52254.figure80544F0A4-66EB-5D40-9FE1-8C4D4EFF73DF

Distribution records of Ectatosticta species from China. 1E. davidi2E. deltshevi3E. wukong sp. nov. 4E. xuanzang sp. nov.

https://binary.pensoft.net/fig/43698010.3897/zookeys.954.52254.figure578F643C6-F11C-5107-835A-12776678E23E

Ectatosticta spp., dorsal view of female genitalia AE. davidi, female from Shaanxi BE. deltshevi, female from Qinghai (type locality) CE. wukong sp. nov., paratype DE. xuanzang sp. nov., holotype.

https://binary.pensoft.net/fig/436977