Morphometric Comparisons of Rana chensinensis from Shaanxi with Three Japanese Brown Frogs (Genus Rana)

Abstract

Rana chensinensis, a brown frog from Shaanxi, China, is morphometrically compared with Japanese relatives, R. ornativentris, R. dybowskii and R. pirica. All these species are characterized by 2n=24 chromosomes. Rana pirica, which has long been regarded as conspecific with R. chensinensis, is morphologically more remote from topotypes of the latter species than are the two remaining species.