How is the Water Vole classified differently from the grassland-dwelling species of the Microtus genus?

Answer

It is classified in the genus Arvicola

While the Water Vole remains within the Arvicolinae subfamily, it is separated from the grassland-dwelling species of the Microtus genus by being placed in the genus Arvicola. This taxonomic distinction highlights the evolutionary divergence required to adapt to a semi-aquatic lifestyle, which differs significantly from the terrestrial and burrowing habits of the Microtus species.

How is the Water Vole classified differently from the grassland-dwelling species of the Microtus genus?
mammalclassificationrodenttaxaVole