A new species of Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from the rio Tocantins-Araguaia basin, Brazil

[Acanthicus]

Cláudio Henrique Zawadzki, Renildo Ribeiro de Oliveira and Tiago Debona

Abstract:

Hypostomus delimai is described from the rio Tocantins, Tocantins State, and from the rio Araguaia, Pará, and Tocantins States, Brazil. The new species is distinguished from all other Hypostomus species, except from H. carinatus, H. hoplonites, and H. watwata, by the presence of five to eight (mode seven) predorsal plates limiting posterior border of the supraoccipital bone (vs. one to three plates). It can be distinguished from H. carinatus, H. hoplonites, and H. watwata by having pale spots
over darker background on body and fins (vs. dark spots over lighter background). The species was only found in the middle stretches of the rio Tocantins-Araguaia basin. The first collection of specimens assigned to the new species was done in the rio Tocantins before the construction of the TucuruÃ* dam. Recently additional material was collected in the rio Araguaia, in a habitat that soon will be flooded for the construction of the Santa Isabel hydroelectric power station.

Die gesamte Beschreibung ist kostenfrei, und hier die Quelle: https://www.ufrgs.br/ni/NIv11n01/v11n1a08.pdf

Es würde mich nicht wundern, wenn Hypostomus delimai schon bei uns aufgetaucht ist, da sie syntop mit H. faveolus und S. cf. emarginata vorkommen soll.


lg Daniel