True stalk-eyed flies are members of the family Diopsidae, first described by Fothergill[REF] and named by Carl Linnaeus in 1775 [REF].
The African genus Centrioncus (once placed in Sepsidae, but then moved to Diopsidae) was once recommended to be treated as a separate family, Centrioncidae, a sister group of the diopsids,[REF] but since then this lineage has usually been treated as a subfamily [REF].