A new species of Eigenmannia Jordan & Evermann (Gymnotiformes: Sternopygidae) from rio Tapajos, Brazil, with discussion on its species group and the myology within Eigenmanniinae

Author(s)

Wanderley Peixoto, Luiz Antonio ^[1] ; Ohara, Willian M. ^{[1, 2]}

Affiliation

^[1] Univ Sao Paulo, Museu Zool, Secao Peixes, Sao Paulo, SP - Brazil

^[2] Univ Fed Rondonia, Dept Engn Pesca, Presidente Medici, Rondonia - Brazil

• Document type: Journal article
• Source: PLoS One; v. 14, n. 8 AUG 14 2019.
• Web of Science Citations: 0

Abstract

A new species of Eigenmannia is described from the rio Mutum, tributary of upper rio Juruena, rio Tapajos basin, Comodoro, Mato Grosso, Brazil. The new species is distinguished from all congeners by coloration pattern, position of the mouth, number of scales rows above lateral line, number of premaxillary and dentary teeth, number of precaudal vertebrae, orbital diameter, mouth width, relative depth of posterodorsal expansion on infra orbitals 1+2 and relative size of coronomeckelian bone. Comments on potentially useful characters in phylogenetic studies derived from musculature, discussion on Eigenmannia species-group and the first dichotomous key for Eigenmannia are provided. (AU)

• FAPESP's process: 16/19075-9 - Diversity and evolution of Gymnotiformes (Teleostei, Ostariophysi)
• Grantee: Naercio Aquino Menezes
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 13/22473-8 - Endemism and biogeographic analysis of fishes from Madeira River basin
• Grantee: Willian Massaharu Ohara
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 18/05084-1 - Evolution of the skeletal musculature of the Gymnotiformes (Teleostei: Ostariophysi)
• Grantee: Luiz Antonio Wanderley Peixoto
• Support Opportunities: Scholarships in Brazil - Post-Doctoral