Diptera of the American Museum Congo Expedition. Part 1, Bibionidae, Bombyliidae, Dolichopodidae, Syrphidae and Trypaneidae. Bulletin of the AMNH ; v. 57, article 2. ; Bibionidae, Bombyliidae, Dolichopodidae, Syrphidae and Trypaneidae ; Diptera of the Belgian Congo