Microglanis nigrolineatus, a new species from northwestern Argentina (Ostariophysi: Pseudopimelodidae)

TERÁN, GUILLERMO ENRIQUE; JARDULI, LUCAS RIBEIRO; ALONSO, FELIPE; MIRANDE, JUAN MARCOS; SHIBATTA, OSCAR AKIO

ICHTHYOLOGICAL EXPLORATION OF FRESHWATERS

VERLAG DR FRIEDRICH PFEIL

Año: 2016 vol. 27 p. 193 - 202

0936-9902

Microglanis nigrolineatus, new species, is described from streams of Bermejo River basin, northwestern Argentina. It is distinguished from all congeners by a combination of characters including a unique coloration pattern: a thin dark line that runs along middle body from vertical line through dorsal-fin origin to end of adipose fin, delimiting two dark-brown areas ending in a dark blotch crossing entire body depth just anterior to caudal-fin origin and dorsal region of head uniformly dark, lacking a paler area on nuchal region. Also, thorn serrae on anterior margin of pectoral-fin spine are short.