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families:brachycera:acalyptrates:platystomatidae 2008/05/24 17:01 current
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 +====== Platystomatidae ======
 +{{:families:image178.jpg?150 }}
 +===== Classification =====
 +BRACHYCERA, Muscomorpha Schizophora Acalyptratae, Tephritoidea
 +**Number of British species:** 2
 +**Size:** [[families:size|S-M]]
 +**Difficulty:** [[families:difficulty|1]] Scheme
 +===== Characters =====
 +Small to large (3-11 mm), dark flies, in //Platystoma// with brown wings with numerous hyaline dots and stout, microtrichose body and usually bright yellow ventral part of abdomen, in //Ravellia// with dark banded or spotted wings and shiny, narrow body. Head round to distinctly flattened arista bare to pubescent; ocelli present; Ocellar bristles reduced or absent; Postvertical bristles reduced or absent; 1-2 pairs of frontal bristles; scattered interfrontal setulae present; vibrissae absent but sometimes vibrissa-like bristles present. Costa with a humeral break, otherwise continuous; vein Sc complete, crossvein BM-Cu present; cell cup closed. Tibiae without dorsal preapical bristle. Female with oviscape, non retractable basal segment of the ovipositor.
 +===== Biology =====
 +The larval habitats are rather diverse, most species feeding on rotting plant materials or on roots in the soil, some species living under the bark of deciduous trees; larvae of //Rivellia// feed on the root nodules in legumes. The adults are also found in various habitats such as woodland, moist meadows dunes, etc., often resting on tree trunks, stones and leaves, in the latter case preferring the lower side. The adults feed on the juice exuding from dung and carrion, on nectar, honeydew, fruit and on sap exuding from tree wounds.
 +===== Identification =====
 +[[refs:c:clements_1990|Clements (1990)]]
families/brachycera/acalyptrates/platystomatidae.txt · Last modified: 2008/05/24 17:01 (external edit)     Back to top
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