Erigone kazhiensis 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 : 52-57

Erigone kazhiensis Irfan, Zhang & Peng , sp. n.

(卡ŦÜēe)

Figures 67–69 , 316

Types. Holotype ♂ ( HNU–SCLT–18–01 ), CHINA, Sichuan Prov.: Ganzi Co., Litang Co., Kazhi Mountain , 30.14454°N, 100.63900°E, 4430 m, 30.IX.2018, M. Irfan & M. Liao leg.

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

Diagnosis. Erigone kazhiensis sp. n. resembles E. maritima in having the similar tibia in male palp ( Figs 67A–D , 68A, B ; Marusik et al. 2006, figs 11, 12, 14, 15), but can be distinguished by the anterior radical process somewhat triangular, distal part not extending above the tehulum in prolateral view in E. kazhiensis sp. n. ( Figs 67B, C , 68B ; vs. rod-like, tip slightly curved, extending above the tegulum); tegulum tip somewhat rectangular in retrolateral view in E. kazhiensis sp. n. ( Figs 67A–C , 68A, B ; vs. somewhat triangular).

Description. Male ( Figs 69A–D ): Total length: 2.59. Carapace 1.21 long, 0.95 wide, cephalic region slightly elevated 0.35 high, brown, fovea, cervical and radial grooves distinct. Clypeus 0.29 high. Chelicerae with four promarginal and four retromarginal teeth. Sternum longer than wide dark brown with microsetae. Eyes: AER recurved, PME slightly procurved. Eye sizes and interdistances: AME 0.05, ALE 0.07, PME 0.06, PLE 0.06, AME–AME 0.04, PME–PME 0.07, AME–ALE, 0.05, PME–PLE 0.08, AME–PME 0.06, ALE–ALE 0.34, PLE–PLE 0.36, ALE–PLE contiguous. Length of legs: I 2.86 (0.79, 1.04, 0.57, 0.46), II 2.62 (0.76, 0.92, 0.53, 0.41), III 2.29 (0.64, 0.76, 0.52, 0.37), IV 2.99 (0.88, 1.01, 0.65, 0.45). TmI 0.33 and TmIV 0.21. Tibial spine formula: 2-2-1-1. Opisthosoma 1.24 long, 0.91 wide, oval, brownish black, with irregular light brown patches.

Palp ( Figs 67A–D , 68A, B ): Femur almost as long as both patella and tibia, slightly curved, ventrally with two rows of teeth; patella longer than tibia, ventral patellar apophysis long with pointed tip, extending ventrally. Tibia with two reterolateral trichobothria, tibia central tooth column-shaped, dorsal tibial apophysis (DTA), round, prolateral tibial apophysis (PTA) longer than wide with blunt end; cymbium unmodified, narrow towards tip; paracymbium (PC) sclerotized, hook-shaped, distal tip slightly curved with blunt end; tegulum (T) with protegulum (PT) longer than wide, with blunt tip slightly covering the distal suprategular apophysis; distal suprategular apophysis (DSA) sclerotized, longer than wide, slightly curved. Embolic division: radix (R) with broad plate, sclerotized; anterior redical process (ARP) longer than wide, slightly curved with blunt end; embolic membrane (EM) small; median membrane (MM) transparent, covering the embolus in prolateral view. Embolus (E) long, sclerotized, S-shaped.

Female. Unknown.

Distribution. Known only from the type locality (Sichuan Province, Fig. 316 ).

Figures

FIGURE 68. Erigone kazhiensis sp. n., male holotype palp till femur. A dorsal view; B retrolateral view.

FIGURE 69. Erigone kazhiensis sp. n., male holotype. A Habitus, dorsal view; B Habitus, ventral view; C, D Habitus, lateral view.

FIGURE 316. Distribution of Linyphiidae species in Sichuan Prov.: 1. Collinsia inerrans (O. Pickard-Cambridge, 1885); 2. Erigone kazhiensis sp. n.; 3. Micrargus longiembolus sp. n..

FIGURE67. Erigone kazhiensissp.n.,male holotype.APalp,prolateral view; BPalp,retrolateral view; CPalp,ventral view;D Palp, dorsal view. Abbreviations: ARP—anterior radical process; DSA—distal suprategular apophysis; DTA—dorsal tibial apophysis; E—embolus; EM—embolic membrane; MM—median membrane; PC—paracymbium; PT—protegulum; PTA—prolateral tibial apophysis; R—radix; SPT—suprategulum; ST—subtegulum; T—tegulum; TCT— tibial central tooth; TP—tailpiece.