Volume 256, Issue 2 p. 165-179

A new species of horseshoe bat (Microchiroptera: Rhinolophidae) from south-central Africa: with comments on its affinities and evolution, and the characterization of rhinolophid species

F. P. D. Cotterill

Corresponding Author

F. P. D. Cotterill

Department of Mammalogy, Natural History Museum of Zimbabwe, P.O. Box 240, Bulawayo, Zimbabwe

Department of Zoology, University of Cape Town, Private Bag, Rondebosch, 7700 South Africa

*All correspondence to: Biodiversity Foundation for Africa, Secretariat: P O Box FM730, Famona, Bulawayo, Zimbabwe. E-mail: [email protected]Search for more papers by this author
First published: 28 February 2006
Citations: 13

Abstract

A new species of horseshoe bat, Rhinolophus sakejiensis, is described from south-central Africa, near the source of the Zambezi River in north-west Zambia. A distinct combination of noseleaf, cranial and baculum characters are diagnostic of the species. It is a member of the ferrumequinum group, and its evolutionary affinities lie closest to R. clivosus Cretzschmar, 1828 and particularly the West African R. hillorum Koopman, 1989. This discovery of a new species of Rhinolophus in the clivosus complex required reappraisal of these and other related taxa. Known only from high forest in West Africa, hillorum is the closest relative of sakejiensis collected in mesic savanna in south-central Africa. Comparisons of this new species with other large Afrotropical Rhinolophus shows that hillorum is specifically distinct from clivosus, and endorses the specific status of deckeni and silvestris. The contemporary taxonomy of Afrotropical Rhinolophus was incapable of accommodating this new taxon, and the latter part of this paper argues for a more objective characterization of rhinolophids as evolutionary species.