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families:brachycera:acalyptrates:tethinidae 2008/05/24 17:01 current
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 +====== Tethinidae ======
 +{{:families:image242.jpg?150 }}
 +===== Classification =====
 +BRACHYCERA, Muscomorpha Schizophora Acalyptratae, Carnoidea
 +
 +**Number of British species:** 10
 +
 +**Size:** [[families:size|T-S]]
 +
 +**Difficulty:** [[families:difficulty|3-4]]
 +===== Characters =====
 +Minute to small (1.5-3.5 mm), yellow to black flies with a grey, yellowish, or brownish pruinosity. Arista bare to short pubescent; ocelli present; Ocellar bristles present; Postvertical bristles converging; 1-5pairs of frontal bristles, the upper ones curving outward or backward, the lower pairs, if present, curving outward, forward and/or inward; interfrontal bristles present or absent; vibrissa-like bristles present, in some cases small and inconspicuous; in the subfamily Tethininae a small lustrous bulge in between the antennae and the anterior vibrissa-like bristle. Wing unmarked, with a pale yellow to brownish tinge; Costa with a subcostal break; vein Sc first running parallel to and then merging with R<sub>1</sub> just before the costa; crossvein BM-Cu absent or very faded; cell cup present but small. Tibiae without dorsal preapical bristle.
 +===== Biology =====
 +Tethinidae are almost exclusively halophilous flies, mainly found along the coast although they occur in saline inland habitats as well; only a few species are also known from habitats that are apparently without increased salinity (forests, meadows, deserts). They are often present in great numbers. Some species are recorded from secondarily man-created habitats, such as meadows polluted by industrial emissions, slaughterhouses and poultry farms, where they live synanthropically in alkaline damp places.
 +===== Identification =====
 +[[refs:c:collin_1960b|Collin (1960b)]], [[refs:c:collin_1966b|Collin (1966b)]], [[refs:i:irwin_et_al_2001|Irwin et al. (2001)]]
 
families/brachycera/acalyptrates/tethinidae.txt · Last modified: 2008/05/24 17:01 (external edit)     Back to top
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