Microlepidogaster discontenta, a new species of hypoptopomatine catfish

[Karsten S.]

Microlepidogaster discontenta, a new species of hypoptopomatine catfish (Teleostei: Loricariidae) from the rio São Francisco basin, Brazil

Bárbara B. Calegari, Ellen V. Silva and Roberto E. Reis

Abstract
Microlepidogaster discontenta, new species, is described from a creek tributary to the upper rio São Francisco basin, central Brazil, and constitutes the first record of the genus in that basin. It is distinguished from all congeners mainly by the odontodes on the caudal peduncle being conspicuously arranged in longitudinal lines (vs. odontodes on the caudal peduncle not arranged in longitudinal lines); and shorter pectoral-pelvic fins distance. Additionally, the new species differs from all congeners except M. longicolla by having a wide naked area on the snout tip (vs. an inconspicuous naked area or a rostral plate). Microlepidogaster discontenta is further distinguished from its congeners by a series of proportional measurements of the body and osteological features.

Ichthyol. Explor. Freshwaters, Vol. 25, No. 3, pp. 213-221, 4 figs., 2 tabs., December 2014, © 2014 by Verlag Dr. Friedrich Pfeil, München, Germany – ISSN 0936-9902

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