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Ephydridae (shore fly, sometimes brine fly) is a family of insects in the order Diptera. Shore flies are tiny flies that can be found near seashores or at smaller inland waters, such as ponds. About 2,000 species have been described worldwide,〔Zatwarnicki T, Kahanpää J (2014) Checklist of the family Ephydridae of Finland (Insecta, Diptera). In: Kahanpää J, Salmela J (Eds) Checklist of the Diptera of Finland. ZooKeys 441: 339–346. (doi: 10.3897/zookeys.441.7448 )〕 including Ochthera. The petroleum fly, ''Helaeomyia petrolei'', is the only known insect whose larvae live in naturally occurring crude petroleum. Another notable species is ''Ephydra hians'' which lives in vast number at Mono Lake. ==Description== For terms see Morphology of Diptera Minute to small (0.9 to 7.0 mm.) flies, black or gray. Wings sometimes patterned. Costa with two interruptions in first section (near the humeral cross-vein and again near the end of vein 1.Second basal cell not separated from discal cell. Arista bare or with hairs on the upper side (plumose on the upper side). Mouth opening very large in some species. Ratio of vertical diameter of eye and height of gena (face index) widely used in identification of species. See (Family description and images ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ephydridae」の詳細全文を読む スポンサード リンク
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