New species of Creagrutus (Ostariophysi; Characiformes; Characidae) from the Rio Xingu drainage, Brazil

Autor(es)

Netto-Ferreira, Andre L. ^{[1, 2]} ; Moreira, Cristiano R. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio Grande do Sul, Dept Zool, Lab Ictiol, Ave Bento Goncalves 9500, Sala 117, 66077-530, BR-91501970 Porto Alegre, RS - Brazil

^[2] Museu Paraense Emilio Goeldi, Ave Perimetral 1901, BR-66077530 Belem, PA - Brazil

^[3] Univ Fed Rio de Janeiro, Dept Vertebrados, Museu Nacl, BR-20940040 Rio De Janeiro, RJ - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Zootaxa; v. 4375, n. 2, p. 250-256, JAN 24 2018.
• Citações Web of Science: 2

Resumo

Creagrutus yudja is described from the Rio Xingu basin, Brazil. It is distinguished from its congeners by the lack of infraorbital 6, the shallower body (13.7-19.2% of SL), the presence of 34-36 perforated lateral line scales, and the presence of 4-6 post-anal scales. The inclusion of the new species on the available, morphology-based phylogenetic study of Creagrutus placed C. yudja as the sister-species of C. nigrotaeniatus, but the clade including those species is not recovered as sister to the pair C. cracentis + C. maxillaris, suggesting independent modifications of the dentition pattern typical of Creagrutus to a condition similar to the plesiomorphic characid condition within the genus. (AU)

• Processo FAPESP: 11/50282-7 - Inventário da fauna de Characiformes (Teleostei, Ostariophysi) da América do Sul
• Beneficiário: Naercio Aquino Menezes
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático