Hisonotus insperatus, new species, is distinguished from all the other species of the genus Hisonotus Eigenmann and Eigenmann by the combination of a pair of rostral plates at the tip of the snout, the complete median plate series to base of the caudal fin, a lateral line that is continuous along the middle of the body, a pectoral spine smooth and lacking odontodes along its posterior dorsal margin for a distance more than one-half of its width, and a scapular bridge that is completely exposed, sometimes with a very reduced median pair of arrector fossae.
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1 September 2003
Hisonotus insperatus: New Species, from the Upper Rio Paraná Basin (Pisces: Ostariophysi: Loricariidae)
Heraldo A. Britski,
Júlio C. Garavello
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Copeia
Vol. 2003 • No. 3
September 2003
Vol. 2003 • No. 3
September 2003