New species of Creagrutus Gunther (Characiformes: Characidae) from rio Tapajos basin, Brazil, with comments on its phylogenetic position

Author(s)

Paiva Dagosta, Fernando Cesar ^[1] ; De Lima Pastana, Murilo Nogueira ^[2]

Affiliation

^[1] Univ Sao Paulo MZUSP, Museu Zool, PPG Sistemat Taxon Anim & Biodiversidade, BR-04218970 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Dept Biol, Lab Ictiol Ribeirao Preto, BR-14040901 Ribeirao Preto, SP - Brazil

• Document type: Journal article
• Source: Zootaxa; v. 3765, n. 6, p. 571-582, FEB 21 2014.
• Web of Science Citations: 7

Abstract

Creagrutus nigrotaeniatus n. sp. is described from the rio Juruena basin, upper rio Tapajos system, Mato Grosso State, Brazil. Creagrutus nigrotaeniatus differs from its congeners by having the dentigerous surface of the premaxilla longitudinally elongate from ventral view, 4-5 post-anal scales and 2-4 maxillary teeth. The new species also has the anterior margin of hyomandibula straight or slightly concave which is a unique condition within the genus, and possesses a series of non-exclusive osteological modifications (e. g. medial opening of the dentary foramen located distinctly anteroventral to the tip of Meckel's cartilage; anterior portion of the laterosensory canal segment in first infraorbital terminating distinctly posterior to the anterior margin of this bone; presence of the third posttemporal fossa within the epioccipital; one epural present). A comparison with Caiapobrycon tucurui is provided and the placement of the new species within Creagrutus and its close relationship with C. cracentis, C. gephyrus, and C. maxillaris are discussed. (AU)

• FAPESP's process: 12/22685-2 - Canals and pores of the cephalic laterosensory system of Characiformes (Ostariophysi): anatomy and phylogenetic information.
• Grantee: Murilo Nogueira de Lima Pastana
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 11/50282-7 - An inventory of the Characiform fish fauna (Teleostei, Ostariophysi) from South America
• Grantee: Naercio Aquino Menezes
• Support Opportunities: BIOTA-FAPESP Program - Thematic Grants
• FAPESP's process: 09/54931-0 - Improvement and management of biological specimen collections at the Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo
• Grantee: Carlos Alberto Garofalo
• Support Opportunities: Research Infrastructure Program - Biological specimen collections
• FAPESP's process: 11/23419-1 - Biogeographic history of the fishes from the Amazon Basin: a methodological comparative approach
• Grantee: Fernando Cesar Paiva Dagosta
• Support Opportunities: Scholarships in Brazil - Doctorate