Calabria pine vole

The Calabria pine vole ("Microtus brachycercus") is a vole found in southern and central Italy initially described by Lehmann as a subspecies of "M. savii". Genetic tests in the Calabrian region found, although similar, the X chromosome is larger than that of samples of "M. savii" found elsewhere in Italy and the Y chromosome is twice the size, leading Galleni in 1994 to designate "M. brachycercus" as a separate species.