A new species of Utiaritichthys Miranda Ribeiro (Characiformes: Serrasalmidae) from the Serra dos Parecis, Tapajós drainage

Author(s)

Thiago N. A. Pereira ^[1] ; Ricardo M. C. Castro ^[1]

Affiliation

^[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras, Dept Biol, LIRP, BR-14040901 Ribeirao Preto, SP - Brazil

• Document type: Journal article
• Source: Neotropical Ichthyology; v. 12, n. 2, p. 397-402, 2014-06-00.

Abstract

Utiaritichthysesguiceroi is described from the upper portion of the rio Juruena, rio Tapajós drainage, Mato Grosso State, Central Brazil. The new species distinguished from its two congeners, U. sennaebragai Miranda Ribeiro and U. longidorsalis Jégu, Tito de Morais & Santos, by having 99 to 101 perforated scales on lateral line (vs. 69 to 83), presence of 17 to19 prepelvic spines (vs. 9-13 in U. sennaebragai and 28-31 in U. longidorsalis), 20 to 21 postpelvic spines (vs. 15 to 19 in U. sennaebragai, and 14 in U. longidorsalis), and 23 to 25 circumpeduncular scales (vs. 30-48 in U. sennaebragai, and 33-35 in U. longidorsalis). Furthermore, the new species differs from U. longidorsalis by having larger interdorsal width, and adipose-fin base length (11.8-15.6 vs. 7.1-7.9% of SL, and 4.2-5.8 vs. 3.7-3.8% of SL, respectively). (AU)

• 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: 04/09219-6 - Phylogenetic relationships in Characidae (Ostariophysi:Characiforms)
• Grantee: Ricardo Macedo Corrêa e Castro
• Support Opportunities: Research Projects - Thematic Grants