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Rhinophoridae

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Classification

BRACHYCERA, Muscomorpha Schizophora Calyptratae, Oestroidea

Number of British species: 8

Size: M

Difficulty: 2

Characters

Small to large (2-11 mm) flies, often with many bristles; usually grey to black with some pruinosity or brownish yellow. Arista bare to plumose. Wing in some cases distinctly marked; vein M1 always curving forward; cell r4+5 sometimes petiolate. Lower calypter always small, ovoid, spoon-shaped, erect, laterally extended (i.e., not recumbent on the thorax). Subscutellum narrow and distinct, only weakly convex; meral bristles always present although fewer in number and less strong than in related families; posterior spiracle with a lining of long hair-like bristles, without lappets.

Biology

As far as known, the larvae live as endoparasitoids in terrestrial woodlice (Isopoda: Oniscidea). The eggs are deposited on trees, walls, underneath stones, etc., and after hatching the young larva actively searches for its host. Pupation takes place within the exoskeleton of the woodlouse which by that time is no more than an empty shell. The adults are often found at sunlit spots, on walls, flowers, windows, etc.

Identification

Bedding (1973), Emden (1954)

Note that van Emden's key to Rhinophoridae included the calliphorid genera Angioneura and Melanomya. Stevenia deceptoria was added to the British list in 2006 (Clemons,L. 2006. Stevenia deceptoria (Loew, 1847) (Diptera, Rhinophoridae) new to Britain. Dipterists Digest (Second series) 13, 119-122.

 
families/brachycera/calyptrates/rhinophoridae.txt · Last modified: 2009/04/01 16:10 by Laurence Clemons     Back to top
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