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New data on the distribution of the endemic Asian rodents zokors (Myospalax sp.) in Eastern Russia (Transbaikalia and Khanka Plain) based on new taxonomic, genetic and morphological research are presented in this article. Both karyotype and mtDNA markers and morphological characteristics (craniometry) were used for species identification. The following four distinct species inhabit this region: Myospalax aspalax, Myospalax armandii, and Myospalax epsilanus in south Transbaikalia and Myospalax psilurus in Khanka Plain. Maps of species distribution and a list of localities for genetically and morphologically typed specimens are presented.