Oilinyphia xinqiaoensis Irfan, Zhang & Peng

Irfan, Muhammad, Zhou, Gu-Chun, Peng, Xian-Jin & Zhang, Zhi-Sheng, 2025, Survey of Linyphiidae spiders (Arachnida: Araneae) from some Oriental Regions of China, Megataxa 15 (1), pp. 1-248 : 141

Oilinyphia xinqiaoensis Irfan, Zhang & Peng , sp. n.

(dzħ奥me)

Figures 182–183 , 307

Types. Holotype ♀, CHINA, Chongqing: Youyang Co., Xiaoba Town, Xinqiao Vill ., 28.837783°N, 108.723728°E, 924 m, 25.V.2017, G.C. Zhou et al. leg. ( HNU–CQ– IV– 1715 ). Paratype 1♀, with same data as for holotype ( HNU–CQ– IV–1715 ).

Etymology. The specific epithet is derived from the type locality; adjective.

Diagnosis. Oilinyphia xinqiaoensis sp. n. resembles O. hengji in having the spermathecae spaced by one diameter in epigyne (Figs 1821A–C; Zhao & Li 2014, figs 71A–C), but can be distinguished by the spermathecae oval in O. xinqiaoensis sp. n. ( Figs 182A–C ; vs. globular).

Description. Female (holotype, Figs 183A, B ): Total length: 1.62. Carapace 0.59 long, 0.49 wide, dark brown, round posteriorly, with long thick setae. Clypeus 0.16 high. Chelicerae with one promarginal and three retromarginal teeth. Sternum shield-like, black with microsetae. Eyes: AER recurved, PER slightly recurved. Eye sizes and interdistances: AME 0.06, ALE 0.06, PME 0.04, PLE 0.06, AME–AME 0.02, PME–PME 0.05, AME–ALE, 0.03, PME–PLE 0.05, AME–PME 0.06, ALE–ALE 0.27, PLE–PLE 0.28, ALE–PLE contiguous. Length of legs: I 2 (0.56, 0.62, 0.43, 0.39), II 1.98 (0.52, 0.61, 0.49, 0.37), III 1.59 (0.42, 0.49, 0.39, 0.29), IV 2.09 (0.59, 0.63, 0.50, 0.37). TmI 0.31 and TmIV 0.19. Tibial spine formula: 2- 2-2-2. Opisthosoma 1.24 long, 1.07 wide, oval, blackish brown, adorned with ridges and papillae.

Epigyne ( Figs 182A–C ): Ventral plate (VP) wide, extended mesally with a truncated end, median extension of the ventral plate almost rectangular posteriorly; copulatory ducts (CD) short, simple; spermathecae (S) spaced by one diameter; fertilization ducts (FD) short, turning upwards.

Male. Unknown.

Distribution. Known only from type localities (Chongqing, Fig. 307 ).

Figures

FIGURE 182. Oilinyphia xinqiaoensis sp. n., female holotype. A, B Epigyne, ventral view; C Vulva, dorsal view. Abbreviations: CD—copulatory duct; CO—copulatory opening; DP—dorsal plate; FD—fertilization duct; S—spermatheca; VP—ventral plate.

FIGURE 183. Oilinyphia xinqiaoensis sp. n., female holotype. A Habitus, dorsal view; B Habitus, ventral view.

FIGURE 307. Distribution of Linyphiidae species in Chongqing: 1. Bathyphantes paracymbialis Tanasevitch, 2014; 2. Diplocephalus circularis sp. n.; 3. Frontinella zhui Li & Song, 1993; 4. Gnathonarium dentatum (Wider, 1834); 5. Gongylidioides acuminatus sp. n.; 6. Gongylidioides ensis sp. n.; 7. Gongylidium uncatum sp. n.; 8. Himalaphantes azumiensis (Oi, 1979); 9. Hylyphantes graminicola (Sundevall, 1830); 10. Indophantes wushanensis Irfan, Wang & Zhang, 2023; 11. Lepthyphantes frondeus sp. n.; 12. Wulinggone qizimeiensis sp. n.; 13. Nematogmus ligulatus sp. n.; 14. Nematogmus sanguinolentus (Walckenaer, 1841); 15. Nippononeta alpina (Li & Zhu, 1993); 16. Nippononeta coreana (Paik, 1991); 17. Oia yinae sp. n.; 18. Oilinyphia xinqiaoensis sp. n.; 19. Oilinyphioides triangularis sp. n.; 20. Prosoponoides sinensis (Chen, 1991); 21. Scotinotylus guizhouensis sp. n.; 22. Sinolinyphia henanensis (Hu, Wang & Wang, 1991); 23. Syedra yuelushanensis sp. n.; 24. Ummeliata feminea (Bösenberg & Strand, 1906); 25. Ummeliata insecticeps (Bösenberg & Strand, 1906); 26. Walckenaeria sinuosa sp. n.; 27. Wuliphantes tongluensis (Chen & Song, 1988).