Peces Criollos - Freshwater Fishes of Argentina Peces Criollos - Freshwater Fishes of Argentina
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Trichomycterus ytororo sp.nov. from Argentina

Trichomycterus ytororo
Trichomycterus ytororo, holotype and below a paratype (photo from publication)

new species:
Trichomycterus ytororo Terán, Ferrer, Benitez, Alonso, Aguilera & Mirande, 2017

published in:
Terán, G.E., J. Ferrer, M. Benitez, F. Alonso, G. Aguilera & J.M. Mirande (2017):
Living in the waterfalls: A new species of Trichomycterus (Siluriformes: Trichomycteridae) from Tabay stream, Misiones, Argentina.
Plos One 12 (6): e0179594

abstract (from publication):
A new species assigned to the genus Trichomycterus from the area of the waterfalls of Tabay stream, Paraná River basin, Misiones, Argentina, is described. Trichomycterus ytororo sp. nov. is distinguished from all other species in the genus by the presence of 31–35 dorsal procurrent caudal-fin rays and the combination of some external characters such as: coloration, number of pectoral–fin rays and pores of the laterosensory canals. The new taxon belongs to a presumably monophyletic group of species composed of T. crassicaudatus, T. igobi, and T. stawiarski based on the presence of 24 or more thickly ossified and rigid procurrent caudal-fin rays with a slender distal tip extending along the tips of at least ten neural spines.

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