Please use this identifier to cite or link to this item:
https://repositorio.inpa.gov.br/handle/1/17189
Title: | Redescription of Microsternarchus bilineatus (Fernández-Yépez, 1968) (Gymnotiformes: Hypopomidae, Microsternarchini), with the designation of a neotype |
Authors: | Fernarndes, Cristina Cox Williston, Andrew |
Issue Date: | 2017 |
metadata.dc.publisher.journal: | Proceedings of the Academy of Natural Sciences of Philadelphia |
metadata.dc.relation.ispartof: | Volume 165, Pags. 105-115 |
Abstract: | Microsternarchus bilineatus Fernández-Yépez, 1968 is a small, inconspicuous electric fish distributed in the Orinoco, Amazon and Tocantins basins. Its holotype and paratypes from Rió San José, a tributary of Rió Guariquito, Orinoco basin, Venezuela, are apparently lost. We examined 14 specimens collected in Rió San Bartolo, also a tributary of Rió Guariquito, 110 km by river from Rió San José. Because of its proximity to the type locality and apparent conformity to the original description, we used these newly collected specimens to redescribe M. bilineatus using external morphology, morphometrics, meristics, and osteology including high-resolution X-ray computed tomography. In order to address geographic variation we compared Rió San Bartolo specimens with others of, or close to, M. bilineatus from Casiquiare river and from two streams in Roraima state, Brazil. In our analysis specimens from distant localities differ in the interobital distance and mouth size, number of anal-fin rays and skeletal features in the dentary and cranial fontanelles. Detailed revision of the genus will require a stable description of type species. Therefore, we designate INHS 111262 as neotype for M. bilineatus. © 2017 by the Academy of Natural Sciences of Drexel University. |
metadata.dc.identifier.doi: | 10.1635/053.165.0107 |
Appears in Collections: | Artigos |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.