Wikipedia
Anthomyzidae
The Anthomyzidae are small, slender, yellow to black flies with narrow and elongated wings, which may have distinct markings. Some species have greatly reduced wings. Fewer than 100 species are known, mostly from Europe. Although they occur in all major regions, they seem to be most varied in the Holarctic region.
Around 20 diverse genera have been placed in the family. Two, Teratomyza and Teratoptera, are now in the Teratomyzidae, and Cyamops and Stenomicra are in the Stenomicridae. Melanthomyza Malloch from Chile should probably not be retained in the family. The remaining genera are very similar to one another.