New species of Pyrrhulina (Teleostei: Characiformes: Lebiasinidae) from the eastern Amazon, Pará, Brazil

ABSTRACT A new species of Pyrrhulina is described based on 60 specimens from tributaries of the rio Amazonas: rio Anapu, rio Capim, rio Guamá and rio Xingu, and coastal drainages in the state of Pará, Brazil. The new species differs from all congeners by having the primary stripe (the horizontal stripe of dark pigmentation extending posteriorly from the snout) terminating at the distal edge of the opercle. In all other species of Pyrrhulina, the primary stripe is either restricted to the snout or continues beyond the head (i.e. at least the anteriormost four scales of the lateral line series).

摘要 基于采自巴西帕拉州亚马孙河支流（阿纳普河、卡皮姆河、瓜马河及欣古河）与沿海水系的60尾标本，记述亮脂鲤属（Pyrrhulina）一新种。该新种与所有同属物种的区别在于：其主条纹（自吻部向后延伸的深色色素水平条纹）终止于鳃盖骨（opercle）的远端边缘；而亮脂鲤属其余所有物种的主条纹要么仅局限于吻部，要么延伸至头部后方（至少可达侧线鳞列的前4枚鳞片）。