Lauxaniidae

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Classification

BRACHYCERA, Muscomorpha Schizophora Acalyptratae, Lauxanioidea

Number of British species: 54

Size: S

Difficulty: 2 Panel

Characters

Small to medium sized (2-7 mm), often rather plump, dull or partially lustrous flies; body colour varying from yellow to brown or black, or with a combination of colours. Arista bare, pubescent, or with long rays; ocelli present; Ocellar bristles present; Postvertical bristles converging, in rare cases parallel (e.g. among a few specimens of Cnemacantha muscaria (Fallen)); 1-2 pairs of frontal bristles, curving backward, the lower pair in some cases curving inward; interfrontal bristles absent; vibrissae absent but some genera, e.g. Trigonometopus, with strong bristles near the vibrissal angle. Wing usually unmarked, in a number of species with spots along the veins, in some cases entirely marked; Costa continuous; vein Sc complete; crossvein BM-Cu present; cell cup closed. Usually all tibiae with dorsal preapical bristle but in a few cases tibia of hind legs without such bristle.

Biology

As far as known the larvae live on micro-organisms in bracket fungi and mushrooms, in rotting vegetable matter, in some cases as miners or in nests of birds. The majority of species are found in shaded spots in moist woodlands, marshes, banks, etc. Some species of Homoneura, Minettia and Calliopum are adapted to drier, more open habitats like dunes and grasslands.

Identification

 
families/brachycera/acalyptrates/lauxaniidae.txt · Last modified: 2008/05/24 17:00 (external edit)     Back to top
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