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

[[ Simpsonichthys de Carvalho ]]

Simpsonichthys de Carvalho 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 , from the Tocantins River basin and S. stellatus (Costa & Brasil) , S. rufus Costa, Nielsen & De Luca , S. trilineatus (Costa & Brasil) , S. auratus Costa & Nielsen , and S. similis Costa & Hellner , 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.