Abstract
Eight species of black flies including two new and four newly recorded ones were collected from Mindoro Island, the Philippines. One of the two new species, Simulium (Gomphostilbia) mindoroense sp. nov., described from the adults, pupae and mature larvae, represents the first species of the ceylonicum species-group so far recorded from the Philippines, and the second, S. (Simulium} halconense sp. nov., described from the adult female and pupa, is assigned to the melanopus species-group. Four species newly recorded from Mindoro Island are S. (S.) baltazarae Delfinado, S. (S.) taalense Takaoka, S. (Wallacellum) suyoense Takaoka and S. (W.) tuyense Takaoka.
