British Insects: the Families of Diptera
Adult insects. Very small to small; slender-bodied to robustly-built; not stilt-legged. The face in lateral view not deeply excavated between the antennae and the edge of the mouth. Antennae 3 segmented (the third segment rounded or globular); modified; with a non-annulated terminal segment; aristate (long); the arista apical to dorsal (being sometimes sub-apical). Ptilinal suture absent or weakly defined. The maxillary palps 1 segmented; porrect. Wings without a discal cell; without a sub-apical cell; without a closed anal cell. Sub-costa apparent; reaching the costa independently of vein 1 (almost?), or terminating blind. The leading edge veins not noticeably stronger than the rest. Wing vein 3 distally forked. Feet without a triple pad.
Larvae and pupae. The larvae terrestrial; saprophagous; hemicephalic. The pupae enclosed within a puparium.
Comments. Small brownish or yellowish, bristly flies, with a more or less spherical third antennal segment and sharply pointed wings.
Classification. Suborder Brachycera; Division Muscomorpha Aschiza; Superfamily Lonchopteroidea.
British representation. 7 species in Britain. Genera 1; Lonchoptera.
Illustrations. • Lonchoptera lutea: B. Ent. 761. • Lonchoptera lutea: B. Ent. 761, legend+text. • Lonchoptera lutea: B. Ent. 761, text cont.. • Lonchoptera lutea (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: 1st January 2012. http://delta-intkey.com’.