Asiagone xingdouensis 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 : 12

Asiagone xingdouensis Irfan, Zhang & Peng , sp. n.

(gŭ亚ēe)

Figures 7 , 8 , 312

Types: Holotype ♀ ( HNU–T20170520 ), CHINA, Hubei Prov.: Enshi Co., Xingdou MNNR , 30.039022°N, 109.14274°E, 1114 m, 20.V.2017, G.C. Zhou et al. leg.

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

Diagnosis. Asiagone xingdouensis sp. n. resembles A. perforata Tanasevitch, 2014 in having a notch at the ventral plate and the ventral & dorsal plates are fused in epigyne ( Figs 7A–C ; Zhao & Li, 2014, fig. 3A), but can be distinguished by the spermathecae present postero-lateral in A. xingdouensis sp. n. ( Figs 7A–C ; vs. present antero-laterally) copulatory ducts kidney-shaped in A. xingdouensis sp. n. ( Figs 7A–C ; vs. sinuous).

Description: Female ( Figs 8A, B ): Total length: 1.45. Carapace 0.58 long, 0.53 wide, dark brown, cephalic region dorsally with fovea, cervical and radial grooves distinct. Clypeus 0.11 high. Chelicerae with five promarginal and six retromarginal teeth. Sternum wider than long, dark brown with microsetae. Eyes: AER recurved, PER slightly procurved and wider than AER. Eye sizes and interdistances: AME 0.03, ALE 0.06, PME 0.05, PLE 0.05, AME–AME, 0.02, PME–PME 0.03, AME–ALE, 0.03, PME–PLE, 0.03, ALE–ALE 0.24, PLE–PLE, 0.26, ALE–PLE contiguous. Length of legs: I 1.61 (0.48, 0.52, 0.33, 0.28), II 1.51 (0.45, 0.46, 0.31, 0.29), III 1.27 (0.38, 0.39, 0.26, 0.24), IV 1.73 (0.54, 0.59, 0.35, 0.25). Tibial spine formula: 2-2-1-1. TmI 0.19 and TmIV present. Opisthosoma 1.09 long, 0.76 wide, dark greenish, oval.

Epigyne ( Figs 7A–C ): The ventral plate (VP) rectangular in outline, with a conspicuous opening at the centre of the ventral plate. The ventral and dorsal plates (DP) are fused posteriorly; copulatory ducts (CD) form a long, curved loop before joining the spermathecae. Spermathecae (S) globular, head almost touching the posterior margin of the ventral plate. Fertilization ducts (FD) present mid dorsally.

Male. Unknown.

Distribution. Known only from type locality (Hubei Province, Fig. 312 ).

Figures

FIGURE 7. Asiagone xingdouensis 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 8. Asiagone xingdouensis sp. n., female holotype. A Habitus, dorsal view; B Habitus, ventral view.

FIGURE 312. Distribution of Linyphiidae species in Hubei Prov.: 2. Asiagone xingdouensis sp. n.; 3. Bathyphantes paracymbialis Tanasevitch, 2014; 4. Bifurcia cochlearis sp. n.; 5. Capsulia tianmushana (Chen & Song, 1987); 6. Dicristatus cordatus sp. n.; 7. Diplocephalus circularis sp. n.; 8. Erigone prominens Bösenberg & Strand, 1906; 9. Frontinella zhui Li & Song, 1993; 10. Gnathonarium dentatum (Wider, 1834); 11. Gongylidioides ensis sp. n.; 12. Gongylidioides microdontus sp. n.; 13. Gongylidium dawolongense sp. n.; 14. Gongylidium minutum sp. n.; 15. Gongylidium uncatum sp. n.; 16. Houshenzinus rimosus Tanasevitch, 2006; 17. Hylyphantes graminicola (Sundevall, 1830); 18. Indophantes wushanensis Irfan, Wang & Zhang, 2023; 1. Microneta maliuxiensis sp. n..