Dagosta Fernando C P, Netto-Ferreira André L
Museu de Zoologia da Universidade de São Paulo (MZUSP), PPG Sistemática, Taxonomia Animal e Biodiversidade, Avenida Nazaré, 481, Ipiranga, 04218-970 São Paulo, SP, Brazil.; Email:
Instituto de Ciências Biológicas, Universidade Federal do Pará, Caixa Postal 479, 66075-110, Belém, PA, Brazil.; Email:
Zootaxa. 2015 Jan 20;3911(3):433-42. doi: 10.11646/zootaxa.3911.3.9.
A new species of Bryconamericus is described from the rio Teles Pires, a tributary of the rio Tapajós. The new taxon can be distinguished from its congeners by having a short anal fin with 11-13 branched rays, two maxillary teeth, four outer premaxillary teeth, and 34-38 perforated lateral-line scales. Other diagnostic characters of the species are the absence of a caudal-peduncle spot and the presence of a pigmented vertical band at the caudal-fin rays base. The phylogenetic position of the new species is inferred based in two available phylogenetic hypotheses, and a discussion on its generic placement is provided.
一种新的丽脂鲤属物种是从塔帕若斯河的支流特莱斯皮雷斯河描述的。这个新分类单元与其同属物种的区别在于,它有一个短的臀鳍,有11 - 13根分支鳍条,两颗上颌齿,四颗外上颌前齿,以及34 - 38片有孔侧线鳞。该物种的其他诊断特征是没有尾柄斑,并且在尾鳍鳍条基部有一条色素沉着的垂直带。基于两个可用的系统发育假说推断了新物种的系统发育位置,并对其属的归属进行了讨论。