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The family Sciomyzidae belongs to the typical flies (Brachycera) of the order Diptera. They are commonly called marsh flies, and in some cases snail-killing flies due to the food of their larvae. Here, the Huttoninidae, Phaeomyiidae, and Tetanoceridae are provisionally included in the Sciomyzidae. Particularly the latter seem to be an unequivocal part of this group and are ranked as a tribe of subfamily Sciomyzinae by most modern authors, while the former two are very small lineages that may or may not stand outside the family and are provisionally ranked as subfamilies here. Whether the Salticellinae and the group around ''Sepedon'' warrant recognition as additional subfamilies or are better included in the Sciomyzinae proper is likewise not yet entirely clear. Altogether, the main point of contention is the relationship between the "Huttoninidae", "Phaeomyiidae", Sciomyzidae ''sensu stricto'', and Helosciomyzidae, which were also once included in the Sciomyzidae. Sciomyzidae are found in all the ecozones, but are poorly represented in the Australasian and Oceanian regions. ==Description== For terms, see Morphology of Diptera. Sciomyzidae are small or medium-sized (2-14 mm), usually slender flies with predominantly dull grey, brown, reddish or yellow bodies, rarely black-lustrous. Their wings are hyaline, often with dark spots or a dark reticulated pattern. The head is semispherical or round. The antennae are usually elongated and the arista is pubescent or has shorter or longer hairs. Ocelli and ocellar bristles are present (absent in ''Sepedon''). The postvertical bristles are divergent or parallel. The one or two pairs of frontal bristles curve backward (the lower pair sometimes curving inward). Interfrontal bristles are absent, but interfrontal setulae are sometimes present. Vibrissae are absent. The wing is clear or with conspicuous markings. The costa is continuous and the subcosta is complete. Crossvein BM-Cu is present and the anal cell (cell cup) is closed. The tibiae almost always have a dorsal preapical bristle. 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「Sciomyzidae」の詳細全文を読む スポンサード リンク
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