British Insects: the Families of Diptera
| British Insects: the Families of Diptera | |
Clythiidae.
Flat-footed Flies.
Adult insects. Very small to small. Antennae 3 segmented (the third segment elongate and often pyriform); ‘modified’; the terminal segment not annulated. Antennae aristate; the bristle apical. Ptilinal suture absent or weakly defined. Eyes meeting above the antennae (males), or not meeting. The maxillary palps 1 segmented; porrect. Vibrissae absent. Wings with a discal cell, or without a discal cell; without a sub-apical cell; with a closed anal cell. The anal cell short. Sub-costa apparent; reaching the costa independently of vein 1. The leading edge veins not noticeably stronger than the rest. Vein 3 not forked. Feet without a triple pad.
Larvae and pupae. Larvae terrestrial; mycophagous (living in fungi); acephalic. Pupa enclosed within a puparium.
Comments. Wings with a thickened costal vein. Small, thinly-haired flies, usually having the basal three or four segments of the hind tarsi dilated. Often dancing in the air in companies.
Classification. Suborder Brachycera; Division Muscomorpha Aschiza; Superfamily Platypezoidea.
British representation: Genera 10; 30 species.
Illustrations: • Callomyia and Polyporivora (from Walker).
To view the illustrations with detailed captions, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. British insects: the families of Diptera. Version: 9th April 2007. http://delta-intkey.com’.
