Peces Criollos - Freshwater Fishes of Argentina Peces Criollos - Freshwater Fishes of Argentina
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Australoheros forquilha sp.nov.

Australoheros forquilha - holotype
Australoheros forquilha, holotype

new species from Argentina:
Australoheros forquilha Rican & Kullander, 2008

type locality:
Brazil, Rio Grande do Sul. Rio Forquilha, Rio Uruguai drainage, road from Maximiliano de Almeida to Machadinho

distribution in Argentina:
Argentina, Misiones, Río Soberbio, Río Uruguay drainage, Soberbio (non-type material)

published in:
Rican, O. & S.O. Kullander (2008): The Australoheros (Teleostei: Cichlidae) species of the Uruguay and Paraná River drainages. Zootaxa 1724: 1–51

abstract (from publication):
Australoheros Rican and Kullander, 2006 includes four described species - Australoheros facetus (Jenyns, 1842), Australoheros tembe (Casciotta, Gómez & Toresani, 1995), Australoheros scitulus (Rican & Kullander, 2003) and Australoheros kaaygua Casciotta, Almirón & Gómez, 2006. Four additional species are newly described in this paper based on results presented in Rican and Kullander (2006): Australoheros forquilha sp. nov., from the tributaries of the Upper Río Uruguay in Brazil; Australoheros charrua sp. nov. and Australoheros minuano sp. nov., from the tributaries of the Middle Río Uruguay in Brazil and Uruguay, and Australoheros guarani sp. nov. from the Río Paraná tributaries in Paraguay. Sympatric species are not found closely related and all sister species have allopatric distributions. Four species groups are recognized based on phylogenetic hypotheses generated from morphological and cyt b characters; the forquilha group - A. forquilha, A. tembe; the scitulus group - A. scitulus, A. charrua; the kaaygua group - A. kaaygua, A. minuano; and the facetus group - A. facetus, A. guarani.

distribution (from publication):
Australoheros forquilha is endemic to the tributaries of the Upper Uruguay in Brazil and its southernmost locality is in the Río Soberbio, an Argentinian tributary of the Middle Río Uruguay just below the Moconá falls separating the Middle and Upper Rio Uruguay. It shares its distribution with A. kaaygua in the Río Uruguay basin.
 

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