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Anasimyia contracta

 
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stuart
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Joined: 11 May 2005
Posts: 737
Location: Peterborough, UK

PostPosted: Sat May 28, 2005 5:39 pm    Post subject: Anasimyia contracta Reply with quote

Anasimyia contracta Claussen & Torp, 1980

Identification ease/difficulty: 3

Sources of information
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stuart
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Joined: 11 May 2005
Posts: 737
Location: Peterborough, UK

PostPosted: Sun May 29, 2005 8:40 am    Post subject: Species account from the Provisional atlas Reply with quote

Species account from Provisional atlas of British hoverflies, Ball & Morris, 2000.

Anasimyia contracta Claussen & Torp, 1980

Biology: Larvae are of the ‘long-tailed’ type, living in ponds and ditches where decaying vegetation is abundant, especially in fen. Adults are rarely found far from the margins of breeding sites. This species seems to be very closely associated with Typha; the larvae have been found between submerged leaf sheaths, whilst adults have been recorded feeding on the pollen in Germany (Imhof, 1979) and are often found sitting on the leaves of the plant. They are also found at Iris pseudacorus, but possibly not feeding

Distribution: Separated from A. transfuga relatively recently (Stubbs, 1981), and earlier records are confused with that species. Recent records have shown that this is the more frequent of the pair, the recording scheme having received approximately twice as many records as for A. transfuga. It is widespread in southern Britain, extending northwards as far as Nairn in Scotland, though tending to be more frequent in the eastern lowlands
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