Zootaxa 3166: 59–68 (2012) www.mapress.com/zootaxa/
Copyright © 2012 · Magnolia Press
Article
ISSN 1175-5326 (print edition) ZOOTAXA
ISSN 1175-5334 (online edition)

A new Alestopetersius (Characiformes: Alestidae) from the Kwilu River (Kasai basin) of central Africa; with a phylogeny for the genus and synonymy of Duboisialestes

Authors

JOSÉ JUSTIN MBIMBI MAYI MUNENE1 & MELANIE L.J. STIASSNY 2
1Faculté des Sciences, Département de Biologie, Université de Kinshasa, B.P 190 Kin XI, Democratic Republic of Congo. E-mail: jjmbimbi@yahoo.fr
2 American Museum of Natural History, Department of Ichthyology, Central Park West at 79th Street, New York, New York 10024, USA. E-mail: mljs@amnh.org



FIGURE 4. Alestopetersius conspectus, new species (A) AMNH 253473, ♂, preserved holotype, 52.9 mm SL, (B) ♂ paratype, immediately post mortem, (C) AMNH 253477, ♀, preserved paratype, 47.5 mm SL, (D) ♀ paratype, immediately post mortem.

Abstract

A new Alestopetersius is described from the Kwilu River in the Kasai basin of the Democratic Republic of Congo. Alestopetersius conspectus, new species, is readily distinguished from all congeners based on attributes of squamation and col- oration. It is distinguished from “Duboisialestes” tumbensis by tooth morphology and in the possession of a distinctive caudal-fin pigmentation patterning consisting of a median black band extending to the caudal-fin margin and flanked by dense black bands in both upper and lower fin lobes. “Duboisialestes” bifasciatus, which shares similar caudal-fin pig- mentation patterning, is distinguished from A. conspectus by the absence of a broad mid-lateral band on the body, and by tooth morphology. Results from an analysis of the relationships and generic composition of the Alestidae provide support for the monophyly for Alestopetersius inclusive of the members of the genus Duboisialestes, which are placed into syn- onomy with the former.

PDF zum runterladen
[[File:Mbimbi_and_Stiassny_2012.pdf]]