Renildo R. de Oliveira, Lucia Rapp Py-Daniel, Claudio H. Zawadzki and Jansen Zuanon
Two new species of Ancistrus are described from Amazon basin: A. krenakarore from rio Itapacurá, a tributary of the right margin of the lower rio Tapajós drainage; and A. karajas from small headwater streams of rio Parauapebas, a tributary of left margin of lower rio Tocantins drainage, both from Pará State, Brazil. The two new species differ from all congeners except A. jataiensis, A. parecis, A. reisi, A. tolima, A. tombador, A. verecundus and A. vericaucanus by the absense or vestigial adipose fin (vs. presence of a fully-developed fin). The new species differ from all congeners without adipose fin by the presence of only one preadipose plate and by a combination of morphometric characters; and differ from each other by color pattern.
Quelle: Ichthyol. Explor. Freshwaters, Vol. 27, No. 1, pp. 67-80, 4 figs., 1 tab., April 2016 (kostenpflichtig)
Neu in der Datenbank: Ancistrus krenakarore, Ancistrus karajas