Journal of Natural History
Vol. 45, Nos. 27–28, July 2011, 1723–1744

Revalidation of Hepsetus cuvieri (Castelnau, 1861) (Characiformes: Hepsetidae) from the Quanza, Zambezi and southern part of the Congo ichthyofaunal provinces

Authors:

T.A. Zengeyaa, E. Decrub,c and E. Vrevenc∗
aDST-NRF Centre of Excellence for Invasion Biology (CIB), Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa; bK.U. Leuven, Laboratory of Animal Diversity and Systematics, Charles Deberiotstraat 32 B-3000 Leuven, Belgium; cRoyal Museum of Central Africa,Vertebrate Section, Ichthyology, Leuvensesteenweg 13 B-3080 Tervuren, Belgium
(Received 4 May 2010; final version received 26 January 2011; printed 12 May 2011)



Abstract

Hepsetus cuvieri (Castelnau, 1861), originally described from “lac N’gami” (Botswana) and synonymized with H. odoe (Bloch, 1794) by Roberts (1984), is revalidated. Hepsetus cuvieri can be readily distinguished from H. odoe based on a lower total number of gill rakers (8–13 versus 14–21); a generally higher num- ber of scales between the dorsal fin and the lateral line (101/2–111/2 versus 71/2–101/2) and a higher number of scales between the adipose fin and the lateral line (61/2–71/2 versus 41/2–61/2) and other characters. A neotype is designated, as the holotype of this nominal species is apparently lost. Hepsetus cuvieri is restricted to the Quanza, Zambezi ichthyofaunal provinces and the southern part of the Congo Basin, i.e. the Congo ichthyofaunal province.

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