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New Hepsetus Species and Rehabilitation of H. cuvieri

Posted: Fri Nov 11, 2011 5:43 pm
by Mark Smith
A revision of the West African Hepsetus (Characiformes: Hepsetidae) with a description of Hepsetus akawo sp. nov. and a redescription of Hepsetus odoe (Bloch, 1794)
E. Decrua, E. Vreven & J. Snoeks in Journal of Natural History, 46 (1-2) [2012]: 1-23.

Abstract:

"Within the genus Hepsetus, a new species from the eastern part of West Africa is described. Hepsetus akawo sp. nov. is mainly distinguished from Hepsetus odoe by a smaller number of lateral line scales [43–51 vs 50–60 (exceptionally 49)] and a shallower head depth [38.0–45.6 (mean 42.0) % head length vs 41.4–49.0 (44.6) % head length] (positively allometric). Hepsetus akawo sp. nov. differs mainly from the recently rehabilitated Hepsetus cuvieri by: a higher number of gill rakers (17–23 vs 8–13); and a lower number of scales between the dorsal fin and the lateral line (7½–9½ vs 10½–11½). Within West Africa, the distribution area of the new species is restricted to the Sassandra River (Ivory Coast) in the west up to the Cross River (Cameroon) in the east. The species is entirely allopatric with H. odoe, which has a far more restricted distribution than previously thought and occurs from the Senegal River (Senegal) in the west to the Cavally River (Ivory Coast) in the east."

Interesting paper. Does anyone know when Hepsetus cuvieri was rehabilitated? Might anyone have photos of all three for comparison/contrasting?

Re: New Hepsetus Species and Rehabilitation of H. cuvieri

Posted: Sun Nov 13, 2011 12:48 am
by Florent
Revalidation of Hepsetus cuvieri (Castelnau, 1861) (Characiformes: Hepsetidae) from the Quanza, Zambezi and southern part of the Congo ichthyofaunal provinces

Journal of Natural History

Volume 45, Issue 27 & 28, 2011, Pages 1723 - 1744

Authors: T. A. Zengeya; E. Decru; E. Vreven

DOI: 10.1080/00222933.2011.560724

Abstract: http://www.informaworld.com/smpp/conten ... rm=abslink

Re: New Hepsetus Species and Rehabilitation of H. cuvieri

Posted: Sun Nov 13, 2011 9:00 am
by Mark Smith
Many thanks Florent!