Simpsonichthys de Carvalho,

Wilson J. E. M. Costa, 2005, Simpsonichthys nielseni sp. n. (Teleostei: Cyprinodontiformes: Rivulidae): a new annual killifish from the São Francisco River basin, Brazil., Zootaxa 1039, pp. 57-64: 58

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Simpsonichthys de Carvalho


[[ Simpsonichthys de Carvalho  ZBK  ]]

Simpsonichthys de Carvalho  ZBK  is a speciose assemblage of Neotropical aplocheiloid annual killifishes, comprising 43 species from an area encompassing northeastern, central and eastern South America (Costa, in press). It includes several well-corroborated clades, often diagnosed by unique morphological characters (Costa, 1996, 2003, in press). The S. notatus  species group, diagnosed by a derived frontal squamation, includes seven species: S. notatus (Costa, Lacerda & Brasil)  and S. radiosus Costa & Brasil  ZBK  , from the Tocantins River basin and S. stellatus (Costa & Brasil)  , S. rufus Costa, Nielsen & De Luca  ZBK  , S. trilineatus (Costa & Brasil)  , S. auratus Costa & Nielsen  ZBK  , and S. similis Costa & Hellner  ZBK  , from the rio São Francisco River basin in Brazil and (Costa & Brasil, 2004; Costa, in press). A new species of this group is herein described.