The Megamerinidae are a family of flies (Diptera) with about 11 species in three genera. They are small and are marked by an elongated, basally constricted abdomen. The family has been variously placed in the past within the superfamilies

Diopsoidea The Diopsoidea are a small but diverse cosmopolitan superfamily of acalyptrate muscoids, especially prevalent in the tropics. Some flux exists in the family constituency of this group, with the Strongylophthalmyiidae and Tanypezidae formerly bei ...

Nerioidea Nerioidea is a superfamily of Acalyptratae flies. Description As flies, Nerioidea undergo complete metamorphosis with the four life stages of egg, larva, pupa and adult. The adult stage has three body segments (head, thorax and abdomen), three ...

and more recently in

Opomyzoidea The Opomyzoidea are a superfamily of flies. Biology Opomyzoids show a range of lifestyles including mining plant leaves (many Agromyzidae), feeding in grass stems ( Anthomyzidae and Opomyzidae), forming plant galls (''Fergusonina''), feeding o ...

but the evolutionary relationships remain unclear.

Description

For terms see Morphology of Diptera
These are slender, medium-sized flies, with long abdomens. The hind femora are thickened, and bear two rows of spinules on the lower side. The costa is entire and the anal cell is elongated. They have no ocelli.

Biology

The biology of immature Megamerinidae is poorly known, but larvae have been recorded as predators living under bark or decaying vegetation.

References

;Citations ;Sources
Family description
* Hennig. 1941. Megamerinidae. In: Lindner, E. (Ed.). ''Die Fliegen der Paläarktischen Region'' 5,39,1-4. Keys to Palaearctic species but now needs revision (in German). {{Taxonbar, from=Q5320288 Schizophora Opomyzoidea