Isoperla curvispina (Wu, 1938)

Isoperla curvispina Wu, 1938a . Bull. Pek. Soc. Nat. Hist., 13(1): 56; Wu, 1938b. Plecopterorum Sinensium, a monograph of the stoneflies of China (Order Plecoptera): 194; Claassen, 1940. Mem. Cornell agric. Exp. Sta., 232: 126; Illies, 1966. Das Tierreich, 82: 424; Zwick, 1973a. Das Tierreich, 94: 243; Yang & Li, 2018. Species Catalogue of China. Vol. 2. Animals, Insecta (III), Plecoptera: 49.

Type information. Holotype male, China: Jilin Province, 1928.VI.28.

Remarks. Both male and female descriptions are available. The male paraprocts are long, hook-shaped, curved upward and anteriorly over tergum 10; the vesicle of the male well-developed, recessed, and deeply pedunculate. The female has a broad subgenital plate, which with a shallow emargination on posterior margin (Figs. 1 C–1E; see figs. 283–285 in Wu 1938a). Color pattern: head brown; pronotum brown and subquadrate, with dark brown rugosities; legs pale brown; ventral surface of body brown (Wu 1938a).