Rheocricotopus (Psilocricotopus) imperfectus Makarchenko & Makarchenko, 2005

Liu, Wenbin, Lin, Xiaolong & Wang, Xinhua, 2014, A review of Rheocricotopus (Psilocricotopus) chalybeatus species group from China, with the description of three new species (Diptera, Chironomidae), ZooKeys 388, pp. 17-34 : 23

Rheocricotopus (Psilocricotopus) imperfectus Makarchenko & Makarchenko, 2005

Rheocricotopus (Psilocricotopus) imperfectus Makarchenko & Makarchenko, 2005: 126; Makarchenko and Makarchenko 2011: 120, Ashe and O’Connor 2012: 564.

Specimens examined.

1♂, Hubei Province, Shennongjia Forest Region, 31°74'56"N, 110°67'53"E, 19.vii.1997, sweeping, Du YZ; 1♂, Hubei Province, Lichuan City, 30°29'37"N, 108°93'20"E, 30.vii.1999, sweeping, Ji BC; 12♂♂, Shaanxi, Baoji City, Feng County, Tsinling Mountains, 34°23'44"N, 106°90'01"E, 28-30.vii.1994, sweeping, Bu WJ; 1♂, Shaanxi, Ankang City, Ningshan County, Huoditang Town, 33°43'38"N, 108°44'81"E, 12.viii.1994, sweeping, Bu WJ; 1♂, Shaanxi, Ankang City, Ningshan County, Xunyangba Town, 33°54'82"N, 108°54'77"E, 17.viii.1994, sweeping, Bu WJ; 10♂♂, Ningxia Hui Autonomous Region, Guyuan City, Jingyuan County, Liupan Mountain, 35°78'97"N, 106°28'93"E, 6-7.viii.1987, sweeping, Wang XH.

Diagnosis.

This species can be separated from other members of the group by the following combination of characters: AR 0.47; humeral pit large and rounded; acrostichal absent; anal point of hypopygium sharply triangular, with 10 setae along the edges; gonostylus slightly curved, with roundish triangular crista dorsalis.

Remarks.

Chinese specimens mainly agree with the description of Makarchenko and Makarchenko (2005), but Chinese specimens with more setae in R (4-8) than the specimens in Russia (R with 3 setae).

Distribution.

China (Hubei and Shaanxi Provinces, Ningxia Hui Autonomous Region), Russia (Far East).