Thursday, November 24, 2016

[Ichthyology • 2016] Parotocinclus dani • A New Species of Parotocinclus (Siluriformes, Hypoptopomatinae) from the rio Tapajós basin, Brazil

 Parotocinclus dani 
Roxo, Silva & Oliveira, 2016  

A new species of Parotocinclus is described from three small tributaries of the rio Tapajós basin, Mato Grosso State, Brazil. The new species can be distinguished from its congeners by presenting the following characters: (1) a triangular dark blotch at the anterior base of the dorsal fin, (2) the absence of an adipose fin but presence of one small platelet at typical adipose-fin region, (3) the abdomen completely covered by dermal plates, (4) a pectoral girdle totally exposed, (5) a single series of bicuspid teeth, and (6) the higher number of bicuspid premaxillary and dentary teeth.

Keywords: Biodiversity, Cascudinhos, freshwater, Neotropical fish, taxonomy

Figure 1. Parotocinclus dani, MZUSP 120737, 27.3 mm SL, holotype from small tributary of rio Peixoto de Azevedo, rio Tapajós basin, municipality of Peixoto de Azevedo, Mato Grosso State, Brazil. 

Distribution: The new species is known from three drainages of rio Tapajós in Mato Grosso State, Brazil (Fig. 4). Two from the rio Teles Pires, in the municipality of Paranaíta and from a small tributary of rio Peixoto de Azevedo, in the municipality of Peixoto de Azevedo.

Etymology: The specific name “dani” is in honor of Daniela Fernandes Roxo, FF Roxo’s sister.

Fábio Fernandes Roxo, Gabriel Souza da Costa e Silva and Claudio Oliveira. 2016. Description of A New Species of Parotocinclus (Siluriformes, Hypoptopomatinae) from the rio Tapajós basin.
ZooKeys. 634; 125-136 DOI: 10.3897/zookeys.634.9917

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