Cryptoperla aculeata ( Wu, 1973 )

Mo, Raorao, Liu, Ruijun, Wang, Guoquan, Li, Weihai & Murányi, Dávid, 2021, Two new and one poorly known species of the Cryptoperla formosana species group (Plecoptera: Peltoperlidae) from China, Zootaxa 5032 (2), pp. 237-246 : 238-239

Cryptoperla aculeata ( Wu, 1973)

( Fig. 1)

Peltoperla aculeata Wu, 1973: 100 .

Cryptoperla aculeata ( Wu, 1973) : Stark, 1989: 517; Yang & Li, 2018: 53; Chen, 2020: 587. Complementary description. The holotype and paratype (allotype) suffered dehydration damage but were otherwise intact. Their color pattern was obscured due to their condition. Ocelli were positioned far from each other, the distance between them being more than twice the diameter of an ocellus ( Figs. 1a, 1c).

Male terminalia ( Fig. 1b). Basal cercal segment long but stout, inner margin without long bristles but covered with long hairs on the whole surface; apical multidentate spur with a longer apical and three shorter basal teeth ( Fig. 1b). Aedeagus cannot be studied due to the poor condition of the specimen.

Female terminalia ( Figs. 1c, 1d). Subgenital plate parabolic and reaching beyond midlength of segment 10 with a narrow, bare, slightly sclerotized marginal band. Sternum 9 is deeply emarginate ( Fig. 1d).

Type material. Holotype: male ( IZCAS), China: Yunnan Province, Dai Autonomous Prefecture of Xishuangbanna , Menghai County, 1200‒1600 m, 22.04096 N, 100.34836 E, 1958.VII.18, leg. Shuyong Wang. Paratype: 1 female (allotype, IZCAS), same locality and data as holotype. Additional paratypes (one male and three females from Sichuan Province, and one male and one female from Gansu Province) were not found .

Distribution. China: Yunnan, Sichuan and Gansu Provinces, on the basis of the original description ( Wu 1973). The presence of this species in Sichuan and Gansu provinces should be confirmed.

Remarks. Multidentate spur of male basal cercal segment of this species is similar to the Vietnamese C. curvata Stark & Sivec, 2007a , the widespread C. fraterna ( Banks, 1938) , and the Thai C. karen Stark, 1989 , but can be easily distinguished from them by the lack of long bristles of basal cercal segment. The female subgenital plate is a common type. The subgenital plate of the female allotype is not fully in agreement with the original description and figures (compare fig. 4 in Wu 1973 and Fig. 1d). In Wu’s figure and description, the subgenital plate is very large and with a medial notch on the posterior margin. The original figure may not be referring to the allotype from Yunnan but to a paratype from Sichuan or Gansu.