A new species and female record of <i>Illiesonemoura</i> (Plecoptera: Nemouridae) from China, with a key to Chinese species

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.https://zoobank.org/urn:lsid:zoobank.org:pub:13A1866B-3C44-470D-B536-5169D8E02BCE