A new species of Isoperla (Plecoptera: Perlodidae) from the Qinling Mountains of northwestern China and notes on the Chinese species of the genus Author Chen, Zhi-Teng Author Song, Liang-Dong Author Feng, Wen-Tao text Zootaxa 2019 2019-08-05 4651 2 379 391 journal article 26085 10.11646/zootaxa.4651.2.11 2043bfdb-76a0-4a4a-bcea-c8d286d2a93b 1175-5326 3363145 459C44D9-55A5-4FD3-8245-8C08E2DC2631 Isoperla fengi Wu & Claassen, 1934 Isoperla fengi Wu & Claassen, 1934 . Bull. Pek. Soc. Nat. Hist., 9(2): 114; Wu, 1935a . Catalogus Insectorum Sinensium, 1: 301; Wu, 1938b . Plecopterorum Sinensium, a monograph of the stoneflies of China (Order Plecoptera ): 42; Claassen, 1940 . Mem. Cornell agric. Exp. Sta., 232: 200; Illies, 1966 . Das Tierreich, 82: 402; Yang & Li, 2018 . Species Catalogue of China . Vol. 2. Animals, Insecta (III), Plecoptera : 49. Type information. Holotype female, China : Jilin Province , Mt. Xiaobeishan. 1929.VI.19. Remarks. The holotype female is only known specimen of this species. Apparently, the female is characterized by the large, bilobed subgenital plate covering sternum 9, and by the paraprocts long triangular ( Fig. 1F ; see fig. 4 in Wu & Claassen 1934 ). Color pattern: head yellowish brown with a rounded yellow spot in ocellar area and with yellow areas inside the compound eyes; pronotum brown, medially with a broad, yellow, longitudinal stripe, lateral areas with dark brown rugosities; legs brown; ventral surface of body brown ( Wu & Claassen, 1934 ). Although only the female description is available, the uncommon shape of subgenital plate appears diagnostic. An associated male is required to complete the description of this species