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Publication Data, Additional Information (status, external links, etc)
treatment citation Juan Marcos Mirande, Gastón Aguilera & María de las Mercedes Azpelicueta, 2007, A new species of Astyanax (Characiformes: Characidae) from the endorheic Río Salí basin, Tucumán, northwestern Argentina., Zootaxa 1646, pp. 31-39: 31-32
publication ID z01646p031
link to original citation http://www.zoobank.org/urn:lsid:zoobank.org:pub:D83848ED-9E15-4C2C-A228-0288B2CAFBB9
treatment provided by Thomas
document name 2007_Mirande_Aguilera_Azpelicueta_gg2.xml
persistent identifier http://treatment.plazi.org/id/30C4494B-0013-73E5-25EC-16A6ED2C83A7
additional text versions Plain XML   TaxonX
scientific name Astyanax
external databases ZBK
distribution map  

[[ AstyanaxZBK]]

In recent years, several species of AstyanaxZBK with similar counts of scales (33-36 on lateral line, 6-7/5-6 transverse) and anal fin-rays (iv-v + 21-23) to those of A. eigenmanniorum were described from eastern Brazil and northern Argentina (Almiron et al, 2002; Azpelicueta & Garcia, 2000; Azpelicueta et al. 2002a, 2002b, 2003; Casciotta et al., 2003; Casciotta & Almiron, 2004; Melo, 2001; Miquelarena et al., 2005; Miquelarena & Menni, 2005; Mirande et al., 2006). Several of these species, plus a few others, share the presence of gradually decreasing dentary teeth and variably expanded premaxillary teeth. This group of species is composed by A. giton EigenmannZBK and A. hastatus MyersZBK from eastern Brazil, A. ojiara Azpelicueta & GarciaZBK, A. troya Azpelicueta, Casciotta & AlmironZBK, A. leonidas Azpelicueta, Casciotta & AlmironZBK, A. pynandi Casciotta, Almiron, Bechara, Roux & Ruiz DiazZBK, A. ita Almiron, Azpelicueta & CasciottaZBK from northeastern Argentina, and A. chico Casciotta & AlmironZBK from northwestern Argentina. Additionally, all these species with the exceptions of A. hastatusZBK and A. itaZBK have hooks on anal, pelvic, pectoral, and/or dorsal, caudal fins.

The aim of this paper is to describe a new species from the endorheic Río Salí basin, northwestern Argentina, which shares with the mentioned species the gradually decreasing dentary teeth and expanded premaxillary teeth.

The genus AstyanaxZBK is currently diagnosed by a combination of several broadly distributed features among Characidae, and there are no studies supporting neither its monophyly nor the monophyly of some species complex within the genus. We assign this new species to genus AstyanaxZBK following its traditional definition (Eigenmann, 1917), considering that the new taxon shares some presumably apomorphic character states with species also assigned to this genus.

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