Rheocricotopus (Psilocricotopus) bifasciatus Wang & Zheng, 1991

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 : 18

Rheocricotopus (Psilocricotopus) bifasciatus Wang & Zheng, 1991

Rheocricotopus bifasciatus Wang & Zheng, 1991: 100.

Rheocricotopus (Psilocricotopus) bifasciatus Wang, 2000: 639, Ashe and O’Connor 2012: 560.

Specimens examined.

Type material: Holotype, ♂, Chongqing City, Jinfo Mountain, 29°01'90"N, 107°16'20"E, 9.v.1986, sweeping, Wang XH. Paratype (1): 1♂, as holotype.

Additional material: 1♂, Sichuan Province, Yajiang County, 30°15'00"N, 101°02'00"E, 14.vii.1997, sweeping, Wang XH; 1♂, Hunan Province, Taoyuan County, 28°63'72"N, 111°13'79"E, 17.vii.2004, sweeping, Yan CC; 3♂♂, Ningxia Hui Autonomous Region, Jingyuan County, 35°66'33"N, 106°29'08"E, 7.viii.1987, sweeping, Wang XH; 1♂, Ningxia Hui Autonomous Region, Jingyuan County, 35°66'33"N, 106°29'08"E, 8.viii.1987, sweeping, Wang XH; 1♂, Gansu Province, Yuzhong County, 35°90'00"N, 104°11'00"E, 4.viii.1993, sweeping, Bu WJ.

Diagnosis.

This species can be separated from other members of the group by the following combination of characters: tergites I, II and IV pale brown, others dark brown; AR 0.90; wing anal lobe reduced; humeral pit large, ovoid; Costal extension 83 μm long.

Remarks.

The additional specimens are similar to the description of Wang and Zheng (1991). The species is recorded from Palearctic Region for the first time.

Distribution.

China (Chongqing Municipality, Sichuan, Hunan and Gansu Provinces, Ningxia Hui Autonomous Region).