Cercion yunnanensis spec. nov., a new damselfly from Yunnan, China (Zygoptera: Coenagrionidae)

Both sexes are described, illustrated and the new sp. is compared with Coenagrion impar Needham. Holotype 6, allotype 9: China, Yunnan prov., Zong-dian, 29-VII-1998, deposited at Shanxi University; paratypes of both sexes from same locality and date, deposited at Dali Teachers Training School, Dali, Yunnan, China. This is the eighth member of the genus known from China. The transfer of Coenagrion impar Needham to Cercion is suggested.