Colecciones Biológicas, Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, Boyacá, Colombia.
Museu de Zoologia da Universidade Estadual de Campinas "Adão José Cardoso", São Paulo, Brazil.
J Fish Biol. 2019 Sep;95(3):932-939. doi: 10.1111/jfb.14091. Epub 2019 Jul 26.
A new species of Hemigrammus is described from the Amazon Basin near Leticia, Departamento Amazonas, Colombia. In common with some congeners and some Hyphessobrycon spp., the new species colour pattern lacks a humeral blotch but has a caudal-peduncle blotch. It can be distinguished from congeners with a similar colour pattern by having: a relatively deep body (30.2%-39.0% L ), 20-24 branched anal-fin rays, 6-8 perforated scales of the lateral line, anal-fin base without a conspicuous black stripe, 3-5 maxillary teeth, maxillary teeth with 1-3 cusps, a thin longitudinal midlateral line and a well-defined oval shaped caudal blotch, extending from caudal peduncle into the lower caudal-fin rays. Comparisons with congeners and with Hyphessobrycon species sharing the same general colour pattern are presented.
本文描述了产自哥伦比亚亚马逊河流域莱蒂西亚附近的一个新的半线脂鲤属物种。与一些近缘种和一些 Hyphessobrycon spp.一样，新物种的颜色图案缺乏肩斑，但有尾柄斑。它可以通过以下特征与具有相似颜色图案的近缘种区分开来：身体相对较深（30.2%-39.0% L），20-24 根分枝的臀鳍鳍条，6-8 个侧线穿孔鳞片，臀鳍基部没有明显的黑色条纹，3-5 个上颌齿，上颌齿有 1-3 个齿突，一条细的纵向侧线和一个定义明确的椭圆形尾斑，从尾柄延伸到下尾鳍的鳍条。与近缘种和具有相同一般颜色模式的 Hyphessobrycon 种进行了比较。
