Yuelushannus baishaensis

Yuelushannus baishaensis
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Linyphiidae
Genus: Yuelushannus
Species:
Y. baishaensis
Binomial name
Yuelushannus baishaensis
Irfan, Zhang, Cai & Zhang, 2025

Yuelushannus baishaensis is a species of dwarf spider in the family Linyphiidae, described in 2025 by Muhammad Irfan, Chang-Cheng Zhang, Yu-Jun Cai, and Zhi-Sheng Zhang.[1] It is endemic to Baisha in the Jiangjin District of Chongqing, China.

Etymology

The species name baishaensis refers to Baisha, the type locality where the species was first discovered.[1]

Diagnostic characteristics

Males of Yuelushannus baishaensis are distinguished by having a protegulum with two tooth-like projections on its side, compared to only one in the closely related species Yuelushannus barbatus.[1]

Additionally, the embolus, a narrow tube used for sperm transfer, is almost as long as the width of the tegulum, while in Y. barbatus, it is significantly shorter.[1]

The female of Y. baishaensis has an epigyne with a small, backward-curved scape, a structure absent in related species. Their spermathecae, the organs that store sperm, are nearly spherical, differing from the more elongated shape in similar spiders.[1]

References

  1. ^ a b c d e Irfan, Muhammad; Zhang, Chang-Cheng; Cai, Yu-Jun; Zhang, Zhi-Sheng (2025). "Four new species of Linyphiidae spiders (Arachnida: Araneae) from Jiangjin District of Chongqing, China". Zootaxa. 5647 (5): 435–450. doi:10.11646/zootaxa.5647.5.2.