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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A new species of Chaetostoma (Siluriformes: Loricariidae) from the Orinoco basin with comments on Amazonian species of the genus in Colombia

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Urbano-Bonilla, Alexander [1] ; Ballen, Gustavo A. [2]
Total Authors: 2
[1] Pontificia Univ Javeriana, Fac Ciencias, Dept Biol, Lab Ictiol, Bogota - Colombia
[2] Univ Sao Paulo, Museu Zool, Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Fish Biology; v. 98, n. 4, SI JAN 2021.
Web of Science Citations: 0

Chaetostoma chimu sp. nov. is described from 119 specimens collected in the Andean foothills of the Orinoco River in Colombia. The new species can be distinguished from congeners by a combination of characters, including shape of cheek odontodes, presence of a supraoccipital excrescence, sexual dimorphism characters and colour pattern. In addition, this species can be distinguished from the sympatric and geographically close congeners of the Orinoco that have curved cheek odontodes (i.e., Chaetostoma anale, Chaetostoma formosae and Chaetostoma joropo), by presenting a generally larger orbital diameter and interorbital distance, details of sexual dimorphism and colour pattern. The type locality of specimens collected by Kjell von Sneidern in the mid-twentieth century in the Colombian Amazon is also clarified. Chaetostoma alternifasciatum and Chaetostoma vagum are proposed as junior synonyms of C. anale. An identification key for the species of Chaetostoma from cis-Andean drainages in Colombia is provided. The new species is herein categorized as Vulnerable (Vu) B1a (i, iii), following the IUCN criteria. (AU)

FAPESP's process: 16/02253-1 - Paleoichthyology of the Sincelejo formation (late Pliocene) in northern Colombia
Grantee:Gustavo Adolfo Ballen Chaparro
Support type: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 14/11558-5 - Fossil freshwater fishes and the biogeography of Northern South America
Grantee:Gustavo Adolfo Ballen Chaparro
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 16/19075-9 - Diversity and evolution of Gymnotiformes (Teleostei, Ostariophysi)
Grantee:Naercio Aquino Menezes
Support type: Research Projects - Thematic Grants