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Diptera Classification
Ephydridae
SUMMARY
Small to moderate-sized flies, length 1-11 mm, usually dull and dark coloured, but unusually diverse in body structure, vestiture, and ornamentation, making this family difficult to characterize; female usually larger than male. Pseudopostocellar setae divergent or lacking. Arista bare, pubescent, or pectinate; aristal rays on dorsum only, except in Asmeringa Becker and in some Ptilomyia Coquillett. Wing with humeral and subcostal breaks; Sc vein rudimentary; vein R1 merging with C before middle of wing; cells bm and dm not separated by a crossvein; Cell cup absent. Anepisternum setulose. Preapical dorsal seta lacking on fore and hind tibiae. (Wirth et al 1987, Mathis & Zatwarnicki 1998)