Marsh flies
Scientific name: Sciomyzidae
Marsh flies
Scientific name: Sciomyzidae
Photo By Liam O'Brien , used under CC-BY-4.0 /Cropped and compressed from original
Description
Sciomyzidae are small or medium-sized (2 - 14 mm), usually slender flies with predominantly dull grey, brown, reddish or yellow body, rarely black-lustrous. Wings hyaline, often with dark spots or dark reticulate pattern. The head is semispherical or round. The antennae are usually elongate 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. There are one or two pairs of frontal bristles which 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. Tibiae almost always have a dorsal preapical bristle.
Species of Marsh flies
Photo By Liam O'Brien , used under CC-BY-4.0 /Cropped and compressed from original