A new species of Curculionichthys (Siluriformes: Loricariidae) from the north edge of the Brazilian Shield, lower Amazon basin

• Main Authors: Suelen P. Gamarra, Bárbara B. Calegari, Roberto E. Reis
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Ictiologia 2019-05-01
• Series: Neotropical Ichthyology
• Subjects: Cascudinho; Neotropical; Peixes; Sistemática; Taxonomia
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000200201&lng=en&tlng=en

ABSTRACT A new species of Curculionichthys is described from the rio Curuá-Una basin, in the northern edge of the Brazilian Shield, State of Pará, Brazil. The new species is diagnosed from congeners by possessing a single rostral plate, by having darkened tooth-crowns, and by a series of morphometric and meristic data. A close examination of the species of Curculionichthys revealed the presence of hyperthrophied odontodes on both dorsal and ventral margins of the snout tip, which are illustrated by electronic microscopy. A discussion is provided on possible phylogenetic relationships of the new taxon. The new species is provisionally accessed as Least Concern (not threatened).