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Type: Articles
Published: 2005-12-16
Page range: 29–39
Abstract views: 42
PDF downloaded: 6

A new species of Jenynsia (Cyprinodontiformes: Anablepidae) from northwestern Argentina and its phylogenetic relationships

CONICET-Fundación Miguel Lillo, Sección Ictiología. Miguel Lillo 251. CP 4000. San Miguel de Tucumán, Tucumán, Argentina
CONICET-Fundación Miguel Lillo, Sección Ictiología. Miguel Lillo 251. CP 4000. San Miguel de Tucumán, Tucumán, Argentina
Pisces Jenynsia new species Tucumán Argentina phylogeny

Abstract

Jenynsia tucumana new species is described from the upper Río Salí basin, province of Tucumán, northwestern Argentina. The new species is diagnosed by the possession of a row of dark markings ranging from dots to small vertical stripes from the tip of adpressed pectoral fin to the posterior margin of the hypural. Also, the new species has a mandibular canal pore W and a symmetrical fifth anal-fin ray in adult males; whereas the females lack a urogenital swelling. According to a phylogenetic reanalysis of the genus, the new species is sister to most species of the subgenus Jenynsia, except for J. onca and possibly J. sanctaecatarinae.

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