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Taxonomy of the plesiolebiasine killifish genera Pituna, Plesiolebias and Maratecoara (Teleostei: Cyprinodontiformes: Rivulidae), with descriptions of nine new species
Taxonomy of the plesiolebiasine killifish genera Pituna, Plesiolebias and Maratecoara (Teleostei: Cyprinodontiformes: Rivulidae), with descriptions of nine new species
Author
WILSON J. E. M. COSTA
Laboratório de Ictiologia Geral e Aplicada, Departamento de Zoologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68049, CEP 21944-970, Rio de Janeiro, Brasil. E-mail: wcosta@acd.ufrj.br
Table of contents
Abstract ...............................................................................................................................................................................2 Resumo ................................................................................................................................................................................2 Introduction .........................................................................................................................................................................2 Material and methods ..........................................................................................................................................................3 Tribe Plesiolebiasini Costa ..................................................................................................................................................4 Key to species of the tribe Plesiolebiasini ...........................................................................................................................4 Pituna Costa .................................................................................................................................................................4 Key to species of the genus Pituna ..............................................................................................................................5 Pituna brevirostrata, new species ......................................................................................................................6 Pituna poranga Costa .........................................................................................................................................9 Pituna compacta (Myers) .................................................................................................................................11 Pituna schindleri, new species .........................................................................................................................13 Pituna obliquoseriata, new species ..................................................................................................................16 Pituna xinguensis Costa & Nielsen, new species .............................................................................................18 Plesiolebias Costa ......................................................................................................................................................20 Key to species of the genus Plesiolebias ...................................................................................................................20 Plesiolebias fragilis, new species ....................................................................................................................21 Plesiolebias altamira Costa & Nielsen, new species .......................................................................................25 Plesiolebias filamentosus Costa & Brasil, new species ...................................................................................27 Plesiolebias canabravensis Costa & Nielsen, new species .............................................................................29 Maratecoara Costa ....................................................................................................................................................31 Key to species of the genus Maratecoara ..................................................................................................................32 Maratecoara lacortei (Lazara) ........................................................................................................................32 Maratecoara formosa Costa & Brasil ..............................................................................................................34 Maratecoara splendida, new species ...............................................................................................................36 Discussion .........................................................................................................................................................................38 Acknowledgments .............................................................................................................................................................41 Literature cited ..................................................................................................................................................................41
Abstract
The seasonal plesiolebiasine killifish genera Pituna Costa, Plesiolebias Costa, and Maratecoara Costa, endemic to cen- tral and northeastern Brazil, are revised. A key is provided for the identification of plesiolebiasine genera, and keys are also included for species of the three revised genera. Six species are recognized in Pituna: P. brevirostrata n. sp. from the rio Paranaíba drainage, rio Paraná basin; P. poranga Costa from the rio Araguaia basin; P. compacta Myers from the rio Tocantins basin; P. schindleri n. sp. from the rio Parnaíba basin; P. obliquoseriata n. sp. from the rio das Mortes drain- age; and P. xinguensis Costa & Nielsen n. sp. from the rio Xingu basin. Four new species of Plesiolebias are described, complementing a recent revision of the genus (Costa, 1998c): P. fragilis n. sp., from the middle rio Araguaia basin; P. altamira Costa & Nielsen n. sp., from the rio Xingu basin; P. filamentosus Costa & Brasil n. sp., from the rio Tocantins floodplains; and P. canabravensis Costa & Nielsen n. sp., from the rio Canabrava floodplains, rio Tocantins basin. Three species are recognized in Maratecoara: M. lacortei (Lazara), from the Araguaia–das Mortes basin; M. formosa Costa & Brasil, from the middle rio Tocantins floodplains; and M. splendida n. sp. from the rio Canabrava floodplains, rio Tocantins basin.
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[[File:Costa 2007 Plesiolebiasini.pdf]]
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