A new record of the Evoron vole (Rodentia, Arvicolinae: Alexandromys evoronensis) in the Far East

Abstract

Alexandromys evoronensis is the endemic vole of the Russian Far East. The range of the species is still unclear. Previously, this species was found in two intermontane areas of the Khabarovsk Krai and one area of the Amur Oblast. We recorded this species in a new location in August 2021 and August 2022. It is a small intermountain area of the western spurs of the Bureinsky Range, in the Tyrma River valley, Khabarovsk Krai (50°01'17.55''N, 132°03'02.60''E). A total of eight Evoron voles were caught here. Karyotyping of one female (2n = 36) revealed a similarity with the karyotype of the Argi chromosomal race of the A. evoronensis. New records of the voles in the Tyrma River valley expand the range of Evoron vole and indicate more southerly habitats than previously stated.

Keywords

• Russian Far East
• fauna
• Evoron vole
• new findings
• new record
• karyotype