Five species of black flies are newly recorded from Myanmar: Simulium
(Gomphostilbia) gombakense Takaoka & Davies, S. (G.) siamense Takaoka & Suzuki, S.
(Simulium) chanyae Takaoka & Choochote, S. (S.) nigrifacies Datta and S. (S.) tani Takaoka
& Davies (complex). This increases the number of species of black flies from Myanmar from
23 to 28. The male and pupa of S. (S.) chanyae are described for the first time. The pupa of this
species is characterized by having the wall-pocket-shaped cocoon without anterolateral
windows, separating it from most other species of the Simulium multistriatum speciesgroup.