Evolutionary divergence of Microtus liechtensteini (Rodentia, Arvicolidae) based on the first lower molar

Morphometrical analysis of the first lower molar (M1) confirmed Microtus liechtensteini (Wettstein, 1927) to be closer to M. multiplex than to M. subterraneus. In the terms of the inclination of the pitymyan rhombus, M. liechtensteini appeared to be more evolved than M. multiplex. Significant interpopulation variability was recorded as regards morphometrical analysis of M1 in M. liechtensteini: M. l. petrovi was larger than the nominate race M. l. liechtensteini, while populations from the sub-Mediterranean zone differed by more open anterior loop.