This species is widely distributed in central and southern China (Shaanxi, Gansu and Henan, south to southeastern Tibet, Yunnan, Guangxi, Guangdong and Jiangxi; Yang et al. 2003; Zhou et al. 2004). It extends to the eastern Himalayas and into northeastern Viet Nam, and perhaps northern Lao PDR (there is unresolved historical information that this species also used to exist in Lao PDR (Chebinaud 1942; J.W. Duckworth pers. comm.).