Stomylomyia Bigot, 1887

Greathead, D. J. & Evenhuis, N. L., 2001, Annotated keys to the genera of African Bombylioidea (Diptera: Bombyliidae; Mythicomyiidae), African Invertebrates 42 (1820), pp. 105-224 : 207-208

Stomylomyia Bigot

Stomylomyia Bigot, 1887 a : xxxi [1887b: xxxi]. Type-species: Stomylomyia leonina Bigot, 1887 [= Tomomyza europaea Loew, 1869 ], by monotypy.

Comments: Stomylomyia spp. are similar to Plesiocera spp. but have a interradial crossvein. The species examined also have an indication of a bisecting line, so their inclusion in this tribe needs to be reviewed.

Keys: Engel (1932 –7), Paramonov (1929).

Distribution: Palaearctic Region. North Africa: Egypt: 4 species; Stomylomyia aegyptiaca Bezzi , S. europaea (Loew) , S. nigrirostris Bezzi , S. pusilla Bezzi.

Villini Hull Type genus: Villa Lioy, 1864 .

The key character separating the Villini from the Exoprosopini is the absence of a spine-like pulvillus. Otherwise the two tribes are similar, except that the Villini most often lack an interradial vein (consequently only two submarginal cells), often have only a single flagellomere, and on the whole are smaller in size.

Until recently there was a tendency to lump species into the genera Villa and Hemipenthes , although other genera were proposed for distinctive species-groups, on the grounds that there was too much overlap in characters. However, examination of the genitalia and more subtle characters of the vestiture has enabled genera to be more convincingly delimited (Greathead 1981). Distribution patterns and host records tend to support the generic groupings recognised here and now generally accepted as valid.