New species of Characidium (Characiformes: Crenuchidae) from the Rio Tapajos and Rio Xingu drainages, Para, Brazil

Author(s)

Mendonca, Marina B. ^[1] ; Netto-Ferreira, Andre L. ^[2]

Affiliation

^[1] Museu Paraense Emilio Goeldi, BR-66077530 Belem, PA - Brazil

^[2] Fed Univ Para, Inst Ciencias Biol, BR-66075110 Belem, PA - Brazil

• Document type: Journal article
• Source: Zootaxa; v. 4021, n. 1, p. 187-194, SEP 24 2015.
• Web of Science Citations: 4

Abstract

Characidium nana is described from the Rio Xingu and Rio Tapajos drainages. The new species is distinguished from all its congeners by the absence of the inner series of dentary teeth, the absence of the parietal branch of the supraorbital laterosensory canal, the incomplete lateral line, the lack of an adipose fin, the presence of a conspicuous dark blotch on caudal peduncle as well as an evident dark, midlateral stripe, and the presence of 12 circumpeduncular scales. The relationships of the new species and its inclusion among the species of clade C4 are discussed. (AU)

• FAPESP's process: 10/19088-7 - Taxonomic review and phylogeny of the genus Pyrrhulina (Teleostei: Characiformes: Lebiasinidae)
• Grantee: André Luiz Netto Ferreira
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• 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