Sinisterigone, Irfan & Zhang & Peng, 2022

Irfan, Muhammad, Zhang, Zhi-Sheng & Peng, Xian-Jin, 2022, Survey of Linyphiidae (Arachnida: Araneae) spiders from Yunnan, China, Megataxa 8 (1), pp. 1-292 : 256

Sinisterigone gen. nov. (ǺẮƦø)

Type species: Sinisterigone circularis sp. nov. ( AE ḆǺẮƦ)

Etymology. The genus name comes from the Latin adjective “ Sinister ”, meaning “the left”, referring to embolus curved in clock wise direction in left male palp. Gender is masculine.

Diagnosis. Sinisterigone gen. nov. can be distinguished from any other Erigoninae genus by the embolic division with long, curved anterior radical process and the filiform embolus. Copulatory ducts with long coiled spirals extending anteriorly before joining to the spermathecae ( Figs 291A–D , 292A, B , 293A–C ).

Figures

FIGURE 291. Sinisterigone circularis sp. nov., male palp of holotype. A prolateral view B retrolateral view C ventral view D dorsal view.

FIGURE 292. Sinisterigone circularis sp. nov., male (one of paratypes). A Embolic division, dorsal view B Embolic division, ventral dorsal view.

FIGURE 293. Sinisterigone circularis sp. nov., female (one of paratypes). A, B Epigyne, ventral view C Vulva, dorsal view.