Hyphessobrycon oritoensis (Characiformes: Characidae), a new species from the Putumayo River drainage, Colombian Amazon

Abstract

Hyphessobrycon oritoensis (Characiformes: Characidae) is described from the Putumayo River drainage of the Colombian Amazon. The new species belongs to the H. heterorhabdus group and is distinguished from all other known species by the following combination of characters: iii,8 dorsal–fin rays, iv, 26–27 anal–fin rays, 19 teeth on dentary, 35 scales in longitudinal series, 10–11 perforated scales in lateral line, 7 scales between lateral line and dorsal–fin origin, 14 predorsal scales and a dark lateral band that extends from the posterior border of the humeral spot to the tips of the middle caudal fin rays.

A new species of Hyphessobrycon Durbin from northeastern Brazil: evidence from morphological data and DNA barcoding (Characiformes, Characidae)

“…In addition, some artificial species groups of Hyphessobrycon were proposed based on the combination of character states (e.g., Weitzman and Palmer 1997, Zarske 2014, García-Alzate et al 2008a, b, 2013, Carvalho and Malabarba 2015) relying mainly on coloration patterns. However, in many cases, it is not possible to assign without reasonable doubt to which group a particular species belongs (Bragança et al 2015).…”

A new Hemigrammus from the upper Río Vaupés, Colombia (Characiformes: Characidae), with a discussion on the presence of an enlarged urogenital papilla in the family

“…Another species similar in colour pattern and scale counts to He. xaveriellus is Hyphessobrycon oritoensis García‐Alzate, Román‐Valencia & Taphorn, 2008, known only from the piedmont area of the Río Putumayo basin, Colombia (Garcia‐Alzate et al ., ). Similar to He.…”

“…Hemigrammus xaveriellus possessed well‐developed patches of small scales on both fin lobes, whereas the caudal fin in Hy. oritoensis , as expected by its generic assignment, was reported to be scaleless (Garcia‐Alzate et al ., , p. 45). Interestingly, although not mentioned in the original description, Hy.…”

<i>Hyphessobrycon taphorni</i> y <i>H. eschwartzae</i> (Teleostei: Characidae) dos nuevas especies de peces de la cuenca del río Madre de Dios, Perú

“…Mirande (2010) incluye al género dentro de la subfamilia Tetragonopterinae, aunque la resolución taxonómica y sus relaciones filogenéticas son tópicos todavía bajo investigación, en Hyphessobrycon aún no existe un consenso para definir su posición filogenética; sin embargo, algunos trabajos indican evidencias sobre unidades monofiléticas dentro de Hyphessobrycon (Mirande 2010, Javonillo et al 2010, Oliveira et al 2011. En Hyphessobrycon se reconocen seis grupos de especies basados en modelos de coloración (Géry1977), uno de estos es heterorhabdus, se caracteriza por presentar una banda oscura en la parte lateral del cuerpo, continua o no con una mancha caudal (García-Alzate et al 2008a, 2010a.…”