Abstract
A preliminary investigation on blackfly fauna was carried out in four provinces of the northern parts of Vietnam. A total of nine species are identified, of which six are newly recorded from this country : i.e., Simulium (Gomphostilbia) asakoae Takaoka et Davies, S. (G.) inthanonense Takaoka et Suzuki, S. (Simulium) hirtinervis Edwards, S. (S.) malayense Takaoka et Davies, S. (S.) quinquestriatum Shiraki, and S. (S.) tani Takaoka et Davies. This brings the total number of black fly species in Vietnam to 13 species.
