Abstract
A new species of Jupiaba is described from rio Curuá, a tributary of the rio Iriri, rio Xingu basin, Pará State, Brazil. The new species is distinguished from its congeners by the unique combination of teeth cusps of similar size, dentary teeth gradually decreasing in size towards posterior portion, color pattern consisting of dark markings on the base of the majority of lateral body scales, inconspicuous dark elongate humeral blotch and conspicuous dark round blotch on the caudal peduncle, and 21 to 24 branched anal-fin rays. The new species is very similar, and possibly sister taxon to J. meunieri. Comments on the endemism of the fish fauna of the upper rio Curuá are given.
Highlights
Jupiaba Zanata is a characid genus that comprises fishes bearing spine-like pelvic bones which protrude anteroventrally through the body wall in some species
The new species belongs to the genus Jupiaba, a monophyletic unit defined by a series of synapomorphies (Zanata, 1997; Zanata & Lima, 2005), which include the presence of elongate pelvic bone, developed as a spine and with its anteriormost portion free from the musculature
It is noteworthy that J. kurua shares with J. acanthogaster, J. atypindi, J. keithi, J. maroniensis, J. meunieri, J. minor, J. pinnata, and J. poekotero the presence of premaxillary and maxillary teeth somewhat compressed, with cusps of similar size, and dentary teeth decreasing gradually in size posteriorly
Summary
Jupiaba Zanata is a characid genus that comprises fishes bearing spine-like pelvic bones which protrude anteroventrally through the body wall in some species. The resulting material, deposited at MNRJ, is labeled as from “rio Cachimbo”, what may refer to the nowadays called rio Braço Norte, a tributary of the right bank of rio Peixoto de Azevedo, in the rio Teles Pires drainage. Zanata (1997), examining the material collected by Bockerman in Serra do Cachimbo, recorded three other Jupiaba species as occurring in the area (i.e., at the rio Braço Norte): J. apenima Zanata, J. poranga Zanata, and J. polylepis (Günther). One of them, collected in the rio Jamanxim, rio Peixoto de Azevedo and the lower rio Curuá (below the great falls, see discussion), is tentatively identified as Jupiaba meunieri (and referred as J. cf meunieri), a species originally described by Géry et al (1996) from French Guiana. Comments on the fish endemism of the upper rio Curuá at Serra do Cachimbo are provided
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