The minute black scavenger flies or "dung midges", Scatopsidae, is a family of Nematoceranflies. Despite being distributed throughout the world, it is quite a small family with only around 250 described species in 27 genera although many await description and doubtless even more await discovery. These are generally small, sometimes minute, dark flies (from 0.6 to 5mm), generally similar to black flies (Simuliidae) but usually lacking the humped thorax characteristic of that family.
The family name Scatopsidae literally translates to "looks like feces" (from Greek skat "dung" and opsi "appearance"), but this seems to be a misinterpretation. It is derived from the genus Scatopse, which was misspelled as Scatops.
de Souza Amorim, D. (1998). Amber Fossil Scatopsidae (Diptera: Psychodomorpha). I. Considerations on Described Taxa, Procolobostema roseni, new species, from Dominican Amber, and the Position of Procolobostema in the Family. American Museum Novitates3227; 1-17. PDF fulltext