A new species of Centromochlus (Siluriformes, Auchenipteridae, Centromochlinae) from the middle Rio Tocantins basin, Brazil.
A new species of the catfish genus Centromochlus (Auchenipteridae, Centromochlinae) is described. The new species is diagnosed by having numerous dark rounded blotches over the body and fins, dorsal-fin spine with serrations anteriorly and smooth posteriorly, anal fin of mature males with three unbranched and seven branched rays, anterior nuchal plate absent and posterior nuchal plate not extended ventrally. The new species is described from a small stream in the Estação Ecológica Serra Geral de Tocantins, a natural reserve in the centre of the Brazilian Cerrado, close to the watershed between the Rio Tocantins and the Rio São Francisco basins. The new species is possibly the sister taxon to the recently described Centromochlus meridionalis from the upper Rio Tapajós. Those two species share with Centromochlus perugiae, from the upper Amazon and upper Paraguay, derived features associated with the modified anal fin in sexually mature males.
Departamento de Biologia Animal e Vegetal, Universidade Estadual de Londrina, Caixa Postal 10011, 86057-970, Londrina, PR, Brazil.
J L O
JL
Birindelli
Instituto Nacional da Mata Atlântica, Av. José Ruschi, 4, Centro, 29650-000, Santa Teresa, ES, Brazil.|Programa de Pós-Graduação em Biologia Animal, Universidade Federal do Espírito Santo, Av. Marechal Campos, 1468, Prédio da Biologia, Campus de Maruípe, 29043-900, Vitória, ES, Brazil.
L M
LM
Sarmento-Soares
Museu de Zoologia da Universidade Estadual de Campinas "Adão José Cardoso", Caixa Postal 6109, 13083-863, Campinas, SP, Brazil.
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FC
Lima
D058500:Animal Fins; D000818:Animals; D001938:Brazil; D002397:Catfishes / Q000033:anatomy & histology / Q000145:classification*; D005260:Female; D008297:Male; D010802:Phylogeny; D012727:Sex Characteristics; D013045:Species Specificity
Doradoidea; Neotropical; Ostariophysi; Tatia; systematic; taxonomy