Capnia nigra ( Pictet, 1833 )

Chen, Zhi-Teng & Du, Yu-Zhou, 2017, New species and a new record of Capniidae (Plecoptera) from Xinjiang Uygur Autonomous Region of northwestern China, Zootaxa 4311 (1), pp. 122-128 : 127

Capnia nigra ( Pictet, 1833)

Figs. 16–21 .

Perla nigra Pictet, 1833 . Ann.Sci.Nat. 28: 61.

Capnia conica Klapálek, 1909 . Cas. Ces. Spol. Entomol. 6: 101; Aubert, 1946. Mitt. Schweiz. Entomol. Ges. 20(1): 7–128.

Capnia maynari Navás, 1917 . Mem. R. Acad. Cienc. Artes Barcelona 3 13: 397; Aubert, 1952. Mitt. Schweiz. Entomol. Ges. 25(3): 239–250.

Capnia apicalis Navás, 1930 . Ark. Zool. 21A(7): 5.

Capnia nigra, Zwick, 1971 . Rev. Suiss. Zool. 78(4): 1139.

Material examined. 8 males and 2 females, China: Xinjiang Uygur Autonomous Region, Fuyun County, Riverside Park , Eerqisi River , 793m, 46.9865 N, 89.5247 E, 16 April, 2017, Hai-Yang Xue ( ICYZU).

Diagnosis and remarks. This species is the type of the genus Capnia Pictet, 1841 , and is widely distributed in the Palearctic Region ( DeWalt et al. 2017), including adjacent Mongolia and Russia. Both sexes of C. nigra are macropterous. The above record represent the first collections of this species from China. In dorsal view, males of this species can be distinguished from other Chinese Capnia species by the main epiproct sclerite having sinuous lateral margins and by tapered apex bearing an apicoventral denticle ( Figs. 16–20 ). Females of this species are identified by subgenital plate medially with a darkly sclerotized bar ( Fig. 21 ).

Figures

FIGURES 16 – 21. Capnia nigra (Pictet, 1833). 16. Male terminalia, dorsal view; 17. Male terminalia, lateral view; 18. Male terminalia, ventral view; 19. Male epiproct, dorsal view; 20. Male epiproct, lateral view; 21. Female terminalia, ventral view.