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Issue: Vol. 1350 No. 1: 2 Nov. 2006
Type: Articles
Published: 2006-11-02
DOI: 10.11646/zootaxa.1350.1.2
Page range: 21–31
Abstract views: 85
PDF downloaded: 3

Cnesterodon holopteros (Cyprinodontiformes: Poeciliidae: Poeciliinae), a new species from the Republic of Uruguay

Laboratório de Ictiologia Sistemática, Universidade Federal do Tocantins, Campus de Porto Nacional, Rua 3, Quadra 17, s/n, Jardim dos Ipês, Caixa Postal 136, 77.500-000 Porto Nacional, TO, Brazil
Krumpfhalde 47, 88448 Attenweiler, Germany
Senen Rodríguez 773, Las Piedras 23000, Canelones, Uruguay
Pisces Neotropical Ichthyofauna taxonomy phylogeny live-bearing killifishes

Abstract

Cnesterodon holopteros new species is described from the río Uruguai drainage. The new species is distinguished from its congeners by: (1) a series of small dark brown dots along predorsal portion of first, second or third lateral scale row, associated with vertical bars along body sides; (2) eight or nine (rarely seven) dark brown vertical bars (from one to three scales in depth) along lateral surface of body in females, which may extend nearly down to belly (i.e., at level of ventral profile); (3) bony style at male gonopodium tip long and gently arched, narrowing towards tip to form a distal filament and bearing a V-shaped membrane restricted to its proximal third; (4) four branchiostegal rays in females; and (5) unbranched pelvic-fin rays.

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