Shell colour and banding polymorphism in <i>Cepaea nemoralis</i>(Gastropoda, Pulmonata, Helicidae) from the Moscow region

The shell colour and banding were analyzed in more than 2000 specimens of Cepaea nemoralis collected 11 localities Moscow the region. In colonies studied, snails with pink shells usually predominate, most often represented by phenotype 00000 (complete absence spiral bands). cases, yellow unbanded absent or single specimens. Brown shells, almost exclusively unbanded, found only 5 sites. On example from Zagoryanski Buch (Berlin), as well Sheremetievski Dolgoprudnyi, phenotypic composition newly formed that could have been their origins was compared. A decrease diversity noted.