One new species of Fannia (Diptera, Fanniidae) from Yunnan, China with a key to the Fannia fuscinata-group in China.

Background The Fannidae includes over 400 described species, mainly known from the Holarctic Region. The number of species in the Oriental Region are underestimated. The Fannia fuscinata-group was established by Wang et al. in 2011, consisting of nine species at present. New information A new species of the genus Fannia (Diptera, Fanniidae) is described from Yunnan, part of the Oriental Region in China, namely Fannia menglaensis sp. nov. The detailed description, photographs and drawings of adults and male terminalia of F. menglaensis sp. nov. are provided. All specimens are preserved in the Museum of Beijing Forestry University. [ABSTRACT FROM AUTHOR]