[Studies on Aureum-group (Diptera, Simuliidae) in France (author's transl)].

The study of the male genitalia of blackflies of the complex "Aureum", from several areas of France, has shown four morphological types which are distinquishable by the structures of the ventral plate and of the sytles. These four are S. (E.) aureum Fries, 1824 sensu Rubzov, 1962, S. (E) angustipes Edwards, 1915, S. (E.) lantinum (Rubzov, 1962) and S. latizonum (Rubzov, 1956). S. aureum, sensu Rubzov and S. angustipes, Newly found in France, were collected in Brittany; S. latizonum was found in the south of the Massif Central and S. latinum in both regions. In each case the taxonomy and distribution are given. These four species have a large western palearctic distribution, and the regrouping of several recently described taxa would be useful within the complex "Aureum".