Systematic Variation in the Megachiropteran -nosed Bats Nyctimene cyclotis and N. certans

Abstract

Twenty-four adult specimens of Nyctimene cyclotis Andersen and 36 of Nyctimene certans An- dersen were measured and analyzed using both univariate and multivariate statistical programs. The holotypes of both taxa were examined and measured (both skulls incomplete) and compared with complete specimens. The two species share dental, ear-shape, and pelage characteristics; they occur sympatrically and are shown to be distinct from each other and from other members of the genus when compared with Nyctimene cephalotes and N. papuanus.