Microrasbora Annandale, a new genus record in China, with description of a new species (Teleostei: Cyprinidae)

A new species of genus Microrasbora Annandale (1918), M. microphthalma, is described from the Nanwan River, a tributary of the Ruili River, Irrawaddy drainage, in southwest Yunnan province, China. This new species is the first record of the genus Microrasbora in China. Microrasbora microphthalma can be distinguished from the other species of Microrasbora by the following combination of characters: 15-16 predorsal scales, eye diameter/head length 27-38%, eye diameter/interorbital width 70-93%, predorsal length/ standard length 60-68%, the preanal length/ standard length 65-71% and the origin of dorsal fin is posterior of that of the ventral fin.