[The morpho-karyotypic traits of 4 species of black flies (Diptera: Simuliidae)]

Karyotypes of four species of blackflies belonging to plesiomorphic superspecific taxa, Prosimulium pronevitshae, P. frontatum, Stegopterna richteri, Greniera dogieli have been studied. Structural peculiarities of polythene chromosomes of the salivary glands in older larvae have been analysed. Banding patterns of polythene chromosomes and descriptions of these karyotypes are given for the first time. Karyotypic features of the examined species are compared. Based on the comparative karyological analysis the differences between taxa and their possible relationships are revealed.