Aeromachus propinquus Alphéraky, 1897

(Fig 4C)

Aeromachus propinquus Alphéraky, 1897: 118 (Type locality: Wa Ssu Kou, Sichuan); Evans, 1949: 244; Huang, 2003: 15; Yuan et al. 2015: 330; Wu & Hsu, 2017: 1349.

Aeromachus chinensis Elwes & Edwards, 1897: 189 . (Synonymized by Evans, 1949)

Syrichthus thibetanus Austaut, 1900: 48 . (Synonymized by Evans, 1949)

Material examined. 2 males, altitude 1806 m, 25. VI . 2018, Chawalong Village, Xizang Autonomous Region, P. R. China, leg. Chenglong Cao (SCAU) .

Diagnosis. Aeromachus propinquus differs from the other species in the genus by hindwing underside with small elliptical blackish spots separated by prominent white spots in space Sc+R 1 – CuA 2. Male genitalia (Fig 5C): this species is distinct from its congeners by uncus narrow and valva with dorso-distal projection short and pointed.

Distribution: China (Tibet *, Sichuan, Yunnan).