期刊
NEOTROPICAL ICHTHYOLOGY
卷 15, 期 2, 页码 -出版社
SOC BRASILEIRA ICTIOLOGIA
DOI: 10.1590/1982-0224-20160166
关键词
Anostomidae; Characiformes; Morphology; South America; Taxonomy
类别
资金
- NSF [DEB - 1257898]
- Fundacao Araucaria [641/2014]
- CNPq [478900/2013-9, 420255/2016-8]
- South American Characiformes Inventory [FAPESP 2011/502827]
- All Catfish Species Inventory [NSF DEB-0315963]
- iXingu Project [NSF DEB-1257813]
- National Geographic Committee for Research and Exploration
- Aquatic Critter Inc.
- Projeto qualificacao taxonomica da base de dados da colecao de peixes do MCT-PUCRS para uso on-line (MCT/CNPq) [45/2012, 504177/2012-5]
- Division Of Environmental Biology
- Direct For Biological Sciences [1257813] Funding Source: National Science Foundation
Members of the Leporinus desmotes species complex can be distinguished from other barred or banded congeners by the combination of nine distinct black bars across the head and trunk and long, pointed, laterally compressed and upward curving symphyseal dentary teeth. A taxonomic reassessment of this complex revealed two new species, one from the Orinoco and Negro rivers of Venezuela and Brazil, and the other from the Xingu and Tapajos rivers of Brazil. Both species are similar to L. desmotes and L. jatuncochi, but differ significantly in body shape morphology, coloration, and/or circumpeduncular scale counts. Genetic evidence also contributes to the recognition of both new species. This contribution also maps the geographic distribution of the four known species, and highlights the presence of an unusual meristic polymorphism within Leporinus desmotes sensu stricto that may suggest the presence of even more unrecognized diversity.
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