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Neotropical Ichthyology

Print version ISSN 1679-6225On-line version ISSN 1982-0224

Abstract

PEREIRA, Edson H. L.  and  ZANATA, Angela M.. A new species of the armored catfish genus Pareiorhaphis Miranda Ribeiro (Siluriformes: Loricariidae) from the rio Paraguaçu, Bahia State, northeastern Brazil. Neotrop. ichthyol. [online]. 2014, vol.12, n.1, pp.35-42. ISSN 1679-6225.  http://dx.doi.org/10.1590/S1679-62252014000100003.

A new armored catfish species of the genus Pareiorhaphis is described from the middle and upper portions of rio Paraguaçu basin, coastal drainage of Bahia State, northeastern Brazil. The new species is readily distinguished from all its congeners by having two putative autapomorphies: (1) skin fold just posterior to each emergent tooth series of dentary formed by a single enlarged, flattened papilla, and (2) the midline of lower lip immediately behind the dentaries with small patch of distinct papillae arranged in a short median bump. In addition, the shallow caudal peduncle and comparatively lower number of teeth in each dentary also distinguishes the new species from all congeners. The new species is also compared to Pareiorhaphis bahianus, the geographically closest congener.

Keywords : Cascudos; Chapada Diamantina; Neoplecostominae; Neoplecostomus; Pareiorhaphis bahianus.

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