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families:brachycera:acalyptrates:opomyzidae 2008/05/24 17:01 current
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 +====== Opomyzidae ======
 +{{:families:image158.jpg?150 }}
 +===== Classification =====
 +BRACHYCERA, Muscomorpha Schizophora Acalyptratae, Opomyzoidea
 +**Number of British species:** 17
 +**Size:** [[families:size|S]]
 +**Difficulty:** [[families:difficulty|2-3]] Panel
 +===== Characters =====
 +Small (2-5 mm), slender, yellow, brown, reddish or black coloured flies. Arista pubescent or with relatively long rays; ocelli present; Ocellar bristles present Postvertical bristles absent; 1 pair of frontal bristles, curving backward scattered interfrontal setulae present; vibrissae absent although //Geomyza// with a strong bristle near the vibrissal angle. Wing nearly always with an apical spot and/or darkly marked crossveins or marked all over; costa with a subcostal break; vein Sc usually incomplete but apical part sometimes visible as a thin line reaching the costa; crossvein BM-Cu present but usually incomplete; cell cup closed. Tibiae without dorsal preapical bristle.
 +===== Biology =====
 +In view of the larval food plants, i.e., grasses, the adults are mainly found in open habitats. The larvae live in the stems of grasses, a few species being a pest in agriculture.
 +===== Identification =====
 +[[refs:d:drake_1992|Drake (1992)]], [[refs:d:drake_1993|Drake (1993)]], [[refs:d:drake_2001a|Drake (2001a)]]
families/brachycera/acalyptrates/opomyzidae.txt · Last modified: 2008/05/24 17:01 (external edit)     Back to top
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