Wednesday, December 21, 2016

[Ichthyology • 2016] Moenkhausia conspicua • A New Species of Moenkhausia Eigenmann, 1903 (Characiformes: Characidae) from Amazon Basin, Brazil

 Moenkhausia conspicua 
 Soares & Bührnheim, 2016 


A new species of Moenkhausia is described from tributaries of the lower Amazon basin, Pará State, Brazil. The new species is morphologically similar to Moenkhausia collettiiM. copei, and Mvenerei by the presence of a dark horizontal stripe across the middle portion of the eye, a conspicuous slightly rounded humeral blotch, a dark longitudinal midlateral stripe and a dark stripe along the anal-fin base. However, the new species can be distinguished from M. collettii, M. copei, and M. venerei mainly by the number of cusps on the inner row of the premaxillary, maxillary and dentary teeth, and by the number of scales in transversal series above and below the lateral line.

Keywords: Pisces, taxonomy, color pattern, Hemigrammus barrigonaeHemigrammus lunatus group

FIGURE 1. Moenkhausia conspicua, holotype, INPA 38782, male, 33.9 mm SL, Brazil, Pará, Mojuí dos Campos, rio Curuá-Una basin. 

Distribution. Moenkhausia conspicua is known from the rio Curuá-Una and rio Moju, lower Amazon basin, Pará State, Brazil. 

Etymology. The specific epithet conspicua comes from the Latin, meaning visible, in allusion to the presence of two dark stripes, one extended along midbody and the other along the anal-fin basis. 

Isabel Matos Soares and Cristina Motta Bührnheim. 2016. A New Species of Moenkhausia Eigenmann, 1903 (Characiformes: Characidae) from Amazon Basin, Brazil. 
Zootaxa. 4208(4); 392–400. DOI: 10.11646/zootaxa.4208.4.6