Gracilentus mangshanensis 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 : 81-85

Gracilentus mangshanensis Irfan, Zhang & Peng , sp. n.

(ÞƜDZe)

Figures 103 , 104 , 315

Types. Holotype ♀, CHINA, Hunan Prov.: Mangshan NNR , 24.9517333°N, 112.9500167°E, 1294 m, 13.VIII.2014, H.Q. Yin et al. leg. Paratypes: 7♀, with same data as for holotype; 3♀, Mangshan NNR , 24.94948°N, 112.98438°E, 1327 m, 16.VIII.2014, H.Q. Yin et al. leg.; 1♀, Mangshan NNR , 24.97975°N, 112.99083°E, 1344 m, 17.VIII.2014, H.Q. Yin et al. leg.; 1♀, Mangshan NNR , 24.92725°N, 112.83375°E, 517 m, 19.VIII.2014, H.Q. Yin et al. leg.; 2♀, Mangshan NNR , 24.95880°N, 112.95920°E, 1116–1220 m, 21.VIII.2014, H.Q. Yin et al. leg.

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

Diagnosis. Gongylidium mangshanensis sp. n. resembles G. serratus in having the similar wave-like posterior margin of ventral plate and spermathecae ( Figs 103A–D ; Irfan et al. 2022, figs 126A–C), but can be distinguished by the dorsal plate funnel-shaped in G. mangshanensis sp. n. ( Fig. 103D ; vs. rectangular).

Description. Female (holotype, Figs 104A, B ): Total length: 2.83. Carapace 1.09 long, 0.92 wide, yellowish brown, cervical and radial grooves distinct. Clypeus 0.19 high. Chelicerae sclerotized, dark brown, with five promarginal and five retromarginal teeth. Sternum shield-like, yellowish brown with microsetae. Eyes: AER recurved, PER straight, slightly wider than AER. Eye sizes and interdistances: AME 0.05, ALE 0.08, PME 0.06, PLE 0.07, AME–AME 0.03, PME–PME 0.06, AME–ALE, 0.02, PME–PLE 0.05, AME–PME 0.04, ALE–ALE 0.31, PLE–PLE 0.35, ALE–PLE contiguous. Length of legs: I 5.34 (1.51, 1.81, 1.34, 0.68), II 5.07 (1.43, 1.69, 1.32, 0.63), III 3.5 (1.07, 1.05, 0.92, 0.46), IV 4.52 (1.31, 1.41, 1.23, 0.57). TmI and TmIV present. Tibial spine formula: 2-2-1-1. Opisthosoma 1.74 long, 1.05 wide, oval, pale, mid dorsally with longitudinal greenish band anteriorly followed by 3 transverse chevrons, ventral side pale.

Epigyne ( Figs 103A–D ): Ventral plate (VP) longer than wide protruding above the epigastric furrow posteriorly, posterior margin wave-like. Copulatory opening (CO) present dorsally at the posterior margin of the ventral plate. Dorsal plate (DP) longer tha wide, fused with ventral plate posteriorly; copulatory ducts (CD) present mesally, forming a spiral coiled loop, before joining the spermathecae, extending above the spermathecae anteriorly; spermathecae (S) globular, present anterolaterally, spaced by 2/3 of diameters; fertilization ducts (FD) small, extending mesally.

Male. Unknown.

Distribution. Known only from the type localities (Hunan Provinces, Fig. 315 ).

Figures

FIGURE 103. Gracilentus mangshanensis sp. n., female holotype. A, B Epigyne, ventral view; C Epigyne, lateral view; D Vulva, dorsal view. Abbreviations: CD—copulatory duct; CO—copulatory opening; DP—dorsal plate; FD—fertilization duct; S—spermatheca; VP—ventral plate.

FIGURE 104. Gracilentus mangshanensis sp. n., female holotype. A Habitus, dorsal view; B Habitus, ventral view.

FIGURE 315. Distribution of Linyphiidae species in Hunan Prov.: 1. Acanoides cornutus sp. n.; 2. Acanoides ningxiangensis sp. n.; 4. Auriculaiana yongshunensis sp. n.; 5. Baryphyma xiaoxiense sp. n.; 6. Bathyphantes paracymbialis Tanasevitch, 2014; 7. Bathyphantes pseudogracilis sp. n.; 8. Bifurcia ramosa (Li & Zhu, 1987); 9. Bolyphantes arcuatus sp. n; 10. Bolyphantes gladius sp. n.; 11. Capsulia tianmushana (Chen & Song, 1987); 12. Dicristatus cordatus sp. n.; 13. Diplocephalus circularis sp. n.; 14. Drapetisca boletus sp. n.; 15. Drapetisca nanpingensis sp. n.; 16. Drapetisca yuelushanensis sp. n.; 17. Erigone prominens Bösenberg & Strand, 1906; 18. Frontinella zhui Li & Song, 1993; 19. Gnathonarium dentatum (Wider, 1834); 20. Gnathonarium gibberum Oi, 1960; 21. Oedothorax fortis sp. n.; 22. Tapinocyba sulcata sp. n.; 23. Himalaphantes azumiensis (Oi, 1979); 24. Hylyphantes graminicola (Sundevall, 1830); 25. Kaestneria bicultrata Chen & Yin, 2000; 26. Lepthyphantes frondeus sp. n.; 27. Microlinyphia zhejiangensis (Chen, 1991); 3. Microneta acutalis sp. n.; 28. Nematogmus sanguinolentus (Walckenaer, 1841); 29. Nippononeta alpina (Li & Zhu, 1993); 30. Nippononeta coreana (Paik, 1991); 31. Oia baiyunensis sp. n.; 32. Oia lata sp. n.; 33. Oia yinae sp. n.; 34. Oilinyphioides triangularis sp. n.; 35. Paikiniana lurida (Seo, 1991); 36. Parameioneta bilobata Li & Zhu, 1993; 37. Prosoponoides sinensis (Chen, 1991); 38. Ryojius lianghekouensis sp. n.; 39. Ryojius nanyuensis (Chen & Yin, 2000); 40. Scotinotylus longiprojectus sp. n.; 41. Shaanxinus insectus sp. n.; 42. Shaanxinus longiembolus sp. n.; 43. Sinolinyphia henanensis (Hu, Wang & Wang, 1991); 44. Syedra yuelushanensis sp. n.; 45. Tenuiphantes taipingensis sp. n.; 46. Ummeliata feminea (Bösenberg & Strand, 1906); 47. Ummeliata insecticeps (Bösenberg & Strand, 1906); 48. Walckenaeria xingdouensis sp. n.; 49. Walckenaeria extenuata sp. n.; 50. Walckenaeria yanglinensis sp. n.; 51. Wuliphantes tongluensis (Chen & Song, 1988); 52. Yuelushannus diaotangensis sp. n.; 53. Yuelushannus jinyuanensis sp. n.; 54. Yuelushannus wenfengensis sp. n..