Two new species of the sisorid genus Oreoglanis Smith from Yunnan, China (Teleostei: Sisoridae)

Two new species of the genus Oreoglanis, O. jingdongensis and O. immaculatus are described from the Mekong and Salween River basins, respectively, of Yunnan Province, China. Oreoglanis jingdongensis can be distinguished from other Oreoglanis species by the following characters: lower lip with a distinct median notch, posterior edge smooth or with indentations; caudal fin lunate and lower lobe longer than upper lobe. Oreoglanis immaculatus can be distinguished from its congeners by the following features: lower lip with a strait median notch, posterior edge with indentations; caudal fin emarginate and lower lobe about the same length as upper lobe, having no yellow patches on sides of body below adipose fin.