The lymnaeid snails fauna (Gastropoda: Lymnaeidae) of the east of European Russia and Urals

The original and published data of the gastropods fauna of Lymnaeidae family of the East of European Russia and Urals are summarized. Recent list of Lymnaeidae has 45 species. The most richly represented of the genus Lymnaea (9 subgenera and 42 species). The genus Aenigmomphiscola has three types. Among the subgenera of the genus Lymnaea of the subgenus especially diverse Peregriana - their order has 19 views. The subgenus Stagnicola includes 10 species, Myxas - 3, Corvusiana, Lymnaea s.str., Galba and Radix - 2, Ladislavella and Sibirigalba one mind. Thirty six species of them were found in the East of European Russia, including the Western macroslope of the Urals. Of these, 32 species are revealed in the Volga basin (including the Kama). In the North-East of European Russia (the basins of the Mezen, Vychegda, and Pechora) found 21 species. Thirty three species found in the Eastern Urals. Taxo-nomic and nomenclatural status of some species of Lymnaeidae family is discussed. Spatial patterns of change in the amount of the fauna and ratio of zoogeographical groups are analyzed. Most of the fauna are species with Euro-Siberian, European and Siberian type of areal. In directions from West to East and from South to North reduces the absolute number and proportion of species with a European type of areal, while increasing the contribution shirokopalyj Siberian and North European elements.