Monday, December 22, 2025

[Entomology • 2025] Illiesonemoura wanglanga • A New Species of Illiesonemoura (Plecoptera: Nemouridae) from Sichuan, China

 

 Illiesonemoura wanglanga  
Rehman, Zhu & Du, 2025



ABSTRACT
A new species of Nemouridae stonefly, Illiesonemoura wanglanga Rehman, Zhu and Du sp. nov., is described from Wanglang Nature Reserve, Sichuan Province, China. The male, female, and nymph of this species are identified and thoroughly documented. This study includes a diagnosis, detailed descriptions of the terminalia, and a comparison of terminalia similarities with closely related species. Furthermore, the female of Illiesonemoura bituberculata Wang and Du, 2023 was recorded for the first time from Sichuan Province, along with updated illustrations of the male. In addition, we provide an identification key to the adult males of Chinese Illiesonemoura species. These findings provide valuable data for future identification and taxonomic studies.

KEYWORDS: Nemouridae, Nemourinae, Illiesonemoura, new species, China

 Illiesonemoura wanglanga Rehman, Zhu and Du sp. nov. holotype male.
 (A) head and pronotum, dorsal view; (B) head and pronotum, ventral view; (C) terminalia, dorsal view; (D) tergum 10 and epiproct, dorsal view; (E) terminalia, ventral view; (F) tergum 10 and paraproct, ventral view.

 Illiesonemoura wanglanga Rehman, Zhu and Du sp. nov.

 Illiesonemoura wanglanga Rehman, Zhu and Du sp. nov.
 (A) type locality habitat; (B) an adult Illiesonemoura sitting on a rock near flowing water; (C) adult habitus. (Photograph Ya-Fei Zhu).


A. Rehman, Y. F. Zhu and Y. Z. Du. 2025. A New Species and female record of Illiesonemoura (Plecoptera: Nemouridae) from China, with a key to Chinese species. The European Zoological Journal. 92(1); 1338-1346. DOI: doi.org/10.1080/24750263.2025.2567908 [21 Oct 2025]