УДК 595.773.4 FAUNA AND BIOECOLOGY OF SNAIL-KILLING FLIES (DIPTERA SCIOMYZIDAE) IN THE CENTRAL BLACK SOIL REGION OF RUSSIA S. P. Gaponov Voronezh State University Поступила в редакцию 11.01.2016 г. <...> Fauna of the snail-killing flies in the Central Black soil Region includes 54 species from 21 genera; 15 species have been found in the region for the first time. some peculiarities of biology of the sciomyzidae and their relations with molluscs have been studied Keywords: snail-killing flies, fauna, phenology, Central Black soil Region Family sciomyzidae (snail-killing flies) contains about 600 species, of which 100-110 can be found in Russia. <...> Larvae of snail-killing flies are predators or parasitoids of molluscs; Sepedon knutsoni and Sepedonella nana use freshwater oligochaetes for their larval development [1]. species whose larvae attack aquatic molluscs are usually predators feeding on several prey [1, 2, 3]. species whose larvae are connected with semi-terrestrial or terrestrial snails or slugs are either parasitoids or predators with some features of parasitoids. <...> Based on the degree of environmental connections with water and the hosts (prey), sciomyzidae can be divided into aquatic, semi-aquatic (semi-terrestrial) and terrestrial ecological groups. <...> Larvae of Renocera, some Ilione and Eulimnia feed on fingernail clams (Heterodonta: sphaeriidae) under water [4, 5, 6, 7], while larvae of Hedria spp. attack aquatic pulmonate snails under water. <...> Many species are connected with marshes, swamplands, logged ponds, shallow rivers © Gaponov s. <...> P., 2016 54 with coastal vegetation, seasonal ponds, puddles, and ditches (Anticheta, Ilione albiseta, Renocera, some Pherbellia, Tetanocera). <...> Larvae of aquatic species of genera Sepedon, Hydromya, Dictya, Dictyodes, Ilione, Pherbellia, Hoplodictya, Neolimnia Dichetophora, Elgiva, Limnia, Pherbina, Psacadina and some Tetanocera [8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19] are usually predators and attack aquatic nonoperculate pulmonate snails slightly submerged in shallow and slow waters or aquatic vegetation mats. some species attack aquatic snails who expose their bodies on moist surfaces (Lymnaeidae, Physidae, Planorbidae, Bithyniidae, Bulinidae). <...> The operculum <...>