Hemigrammus Gill

Ricardo C. Benine & Guilherme A. M. Lopes, 2007, A new species of Hemigrammus Gill, 1858 (Characiformes: Characidae) from Rio Caura, Venezuela., Zootaxa 1610, pp. 53-59: 53

publication ID

z01610p053

publication LSID

lsid:zoobank.org:pub:8F7DB5AE-2937-4AA4-A1AD-6561D71A16B6

persistent identifier

http://treatment.plazi.org/id/525DE4AC-3A97-C637-A234-3CD9C867E23A

treatment provided by

Thomas

scientific name

Hemigrammus Gill
status

 

[[ Hemigrammus Gill  ]]

The genus Hemigrammus Gill, 1858  is one of the most diverse in the Characidae, presently with 45 species recognized as valid and widely distributed in Neotropical cis-andean river basins (Lima et al., 2003; Bertaco & Carvalho, 2005, Zarske et al. 2006). Currently allocated as incertae sedis in Characidae (see Lima et al., 2003), Hemigrammus  has not been investigated since the monograph of Géry (1977). Géry, based on the extensive revision of the genus presented by Marion Durbin Ellis in Eigenmann (1918), defined Hemigrammus  by the presence of premaxillary teeth in two rows, inner row with five or more teeth, scale sheath covering the caudal-fin lobes, and an incomplete lateral line. According to Bertaco & Carvalho (2005), the notable anatomical diversity within Hemigrammus  and the high number of species recognized are likely to be the major reasons behind the lack of phylogenetic analyses of its species, as well as of the genus among characids. Examination of several lots from Museo de Ciencias Naturales de Guanare, Venezuela, revealed a new and sexually dimorphic species of Hemigrammus  , which is described herein.