Tachycines (Gymnaeta) gansu (Gorochov, 2010)

(Fig. 107)

Diestrammena (Gymnaeta) gansu Gorochov, 2010 . Far Eastern Entomologist, 212: 13–14, Fig. 4.

Distribution. China (S Gansu, upper part of Yantanghe)*.

Discussion. This species and T. (G.) beresowskii (Adelung, 1902), T. (G.) longicaudus, Karny, 1934, T. (G.) brevicaudus Karny, 1934 are all from China (Gansu). The epiphallus of T. (G.) brevicaudus is subquadrate, those of the other species are A-shaped. According to the original descriptions, we compared the male and females of these species. We believe further investigations are needed.