Isoperla bimaculata Yang & Yang, 1996

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 bimaculata Yang & Yang, 1996

Isoperla bimaculata Yang & Yang, 1996 . Journal of China Agricultural University, 1(5): 116; Yang & Li, 2018. Species Catalogue of China. Vol. 2. Animals, Insecta (III), Plecoptera : 49.

Type information. Holotype female, China: Inner Mongolia, Xing’an League, Zhaqi (Jalaid Banner). 1983.VI.13.

Remarks. Only the female of this species was described by Yang & Yang (1996). The female was characterized by the V-shaped subgenital plate and the cleft sternum 9 ( Fig. 1 A–1B; see fig. 3 in Yang & Yang 1996), which is unusual in Isoperla and may be an artifact of the dried specimen. Color pattern of this species wasindicated as: head yellow, ocellar area with a dark stigma; pronotum yellow, laterally with two wide, dark stripes; legs pale brown; abdominal terga dark, sterna pale brown ( Yang & Yang 1996, in Chinese). New material needs to be examined to determine the status of this taxon, especially associated male with everted aedeagus.

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.