Biogéographie et écologie des crossopes (genre Neomys, Kaup 1889) ; Biogeography and ecology of the water shrews (genus Neomys) in Belgium and Luxemburg

As it was previously stated by Asselberg (1971), two species of the water shrews occur in Belgium. In fact, they are not easily distinguished from each other. That is why the author studied the frequency distribution of the mandibular length and the height of the ramus mandibulae in his Neomys samples. All of them were taken from barn owl pellets originating from southern Belgium. This morphological study shows that the mandidular height is a valuable discriminant character since 99.95 % of the water shrew mandibles are higher than 4.50 mm and 99.5 of the Miller's water shrew ones are smaller... Mehr ...