Isoperla curvispina (Wu, 1938)

Chen, Zhi-Teng, Song, Liang-Dong & Feng, Wen-Tao, 2019, A new species of Isoperla (Plecoptera: Perlodidae) from the Qinling Mountains of northwestern China and notes on the Chinese species of the genus, Zootaxa 4651 (2), pp. 379-391 : 381

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).

Figures

FIGURE 1. Drawings of older Isoperla species from China tracing original literature. A. I. bimaculata, female head and pronotum, dorsal view; B. I. bimaculata, female terminalia, ventral view; C. I. curvispina, male terminalia, dorsal view; D. I. curvispina, male terminalia, ventral view; E. I. curvispina, female terminalia, ventral view; F. I. fengi, female terminalia, ventral view; G. I. nanchana, male terminalia, ventral view; H. I. neimongolica, male head and pronotum; I. I. neimongolica, male terminalia, dorsal view; J. I. neimongolica, male terminalia, ventral view; K. I. ordosi, male terminalia, dorsal view; L. I. ordosi, male terminalia, ventral view; M. I. sowerbyi, female terminalia, ventral view; N. I. yangi, male terminalia, dorsal view; O. I. yangi, male terminalia, ventral view; P. I. yangi, female terminalia, ventral view.