British Insects: the Families of Diptera


L. Watson and M. J. Dallwitz


Xylomyiidae, Solvidae. ~Stratiomyidae.


Adult insects. Antennae 2–6 segmented; ‘modified’; having the terminal segment annulated. The maxillary palps 1 segmented, or 2 segmented; porrect. Wings with a discal cell; without a sub-apical cell; with a closed anal cell. The anal cell relatively long. Wings with the fourth posterior cell closed. The costa extending around the entire wing. Wing vein 3 distally forked. The fork of wing vein 3 narrow, its lower branch reaching the wing margin near the apex. Feet with a triple pad beneath the tarsal claws.

Larvae and pupae. The larvae terrestrial; hemicephalic. The pupae without a puparium.

Comments. Thorax and abdomen yellow and black, legs yellowish. Hind tarsi spurred.

Classification. Suborder Brachycera; Division Tabanomorpha; Superfamily Stratiomyoidea.

British representation. 3 species in Britain. Genera 2; Solva, Xylomya.

Illustrations. • Xylomya and Solva (from Walker). • Xylomya maculata: as Subula(?) maculata, Stephens 1846.

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.’.