Characodon sp. 2 - under construction

English Name:

Amado Nervo Characodon

Mexican Name:

Mexclapique (erronously: Mexcalpique) de Amado Nervo

Original Description:

undescribed species

Holotype:

undescribed species

Terra typica:

undescribed species

Etymology:

undescribed species

The genus was erected by Günther in 1866. He didn't explain why he had chosen this name, but it is obvioulsy refering to the typical dentition. The name of the genus can be derived from the ancient Greek with Χάραξ (chárax), meaning "a pointed stake" and ὀδόντος (ódóntos), the genitive of ὁδούς (ódoús), the tooth. So the name of the genus can be translated with "a tooth like a pointed stake".

Synonyms:

Characodon lateralis Günther, 1866

Distribution and ESU's:

It was known from a spring and its effluent in Amado Nervo, that drains into the Arroyo La Ciénega, an affluent of the Río La Villa in Nombre de Díos. It disappeared from Amado Nervo due to a heavy drought. One subpopulation, the Amado Nervo subpopulation, is accepted and regarded Extinct in the Wild. The bold names are the ones officially used by the Instituto Nacional de Estadística y Geografía; nevertheless, other ones might be more often in use or better known and therefore prefered.

ESU ist short for Evolutionarily Significant Unit. Each unit expresses an isolated population with different genetic characteristics within one species. ESU's can be defined by Molecular genetics, Morphology and/or Zoogeography and help in indicating different phylogenetic lineages within a species. The abbreviation for an ESU is composed of three letters of the genus, followed by the first two letters of the species name and an ongoing number in each species.

Within Characodon sp. 2 we are able to distinguish one ESU. We use the ESU abbrevaitions given by John Lyons, who groups them as Characodon sp. as he wants to wait for final studies. Chrsp9 was found in a small spring and its outflow in Amado Nervo, a small town east of Nombre de Díos. It has to be treated as extinct in the wild.

The left map shows the Río San Pedro basin from the Hydrographic Region Presidio-San Pedro on a Mexico map. The Amado Nervo Goodeid is known from the Río Poanas (POA) subbasin, shown on the right map:

Habitat: