Isoperla eximia Zapekina-Dulkeit, 1975

Isoperla eximia Zapekina-Dulkeit, 1975 . Tr. Gosud. Sapow. “Stolbij”, 10: 211; Zwick & Surenkhorloo, 2005. Acta. Zool. Aca- dem. Sci. Hung., 51(3), 253; Teslenko & Zhiltzova, 2006. Zootaxa, 1130(1), 8; Teslenko, 2009. Aquatic Insects, 31(Supplement 1): 699; Teslenko & Bazova, 2009. Entomol. Rev., 89(9): 1063; Teslenko & Zhiltzova, 2009. Russian Academy of Sciences, Vladivostok: Dalnauka: 272; Judson & Nelson, 2012. Zootaxa, 3541: 47; Yang & Li, 2018. Species Catalogue of China. Vol. 2. Animals, Insecta (III), Plecoptera: 49.

Type information. Holotype male, Russia, Lake Baikal Basin.

Distribution in China. Jilin Province, Antu Country, Yuhualin Area, Chanbai Mountains (Teslenko & Zhiltzova 2006).

Remarks. Adequate descriptions are available for the male and female. The male of this species has small hooked paraprocts, posteromedially produced tergum 10, a well-developed vesicle, and C-shaped aedeagal sclerite. The female has a moderately produced subgenital plate with a rounded posterior margin (see figs. 218–221 in Teslenko & Zhiltzova 2009 and figs. 321–324 in Judson & Nelson 2012). Color pattern: head pale with a subquadrate ocellar stigma extending to posterior of head; pronotum with four longitudinal brown stripes; legs pale (Judson & Nelson 2012).