Entomocorus melaphareus, a new species of auchenipterid catfish (Osteichthyes: Siluriformes) from the lower and middle reaches of the rio Amazonas

Abstract

A new species of auchenipterid catfish, Entomocorus melaphareus, is described. The new species is readily distinguished from its two congeners, Entomocorus benjamini Eigenmann, 1917, and E. gameroi Mago Leccia, 1983, by having darkly pigmented, rather than hyaline, pectoral and pelvic fins. Entomocorus melaphareus is known from the margins of the lower and middle rio Amazonas, and is the only species of the genus known from the main channel of that river.Uma nova espécie de bagre da família Auchenipteridae é aqui descrita com base em dois exemplares coletados recentemente no baixo e médio rio Amazonas. Entomocorus melaphareus se distingue das demais espécies do gênero pelo colorido escuro de suas nadadeiras peitoral e pélvica, contrastando com as nadadeiras hialinas de Entomocorus benjamini Eigenmann, 1917 e E. gameroi Mago Leccia, 1983. Esta é a única espécie do gênero Entomocorus conhecida na calha do rio Amazonas.

Phylogenetic relationships of the South American Doradoidea (Ostariophysi: Siluriformes)

“…From 1998 to 2000, Vari & Ferraris (1998) revised Epapterus, recognizing two valid species; Ferraris & Vari (1999) revised Auchenipterus, describing two new species; Soares-Porto et al (1999) described Gelanoglanis nanonocticolus; Soares-Porto (2000) described Centromochlus macracanthus; and Ferraris & Vari (2000) described Pseudepapterus gracilis as a new species from the Caura River in Venezuela. Later on, Akama & Ferraris (2003) described Entomocorus malaphareus as a new species from the Amazon; Sarmento-Soares & Buckup (2005) described Glanidium bockmanni; and Ferraris et al (2005) revised Auchenipterichthys, currently with three valid species. In 2006, Reis & Borges (2006) revised Entomocorus, describing one new species from the Pantanal; and Vari & Ferraris (2006) described Tetranematichthys wallacei.…”

“…In mature males of the auchenipterid Entomocorus, the first ray of the pelvic fin is modified, enlarged and elongate (Ferraris, 1988: #PV2, Royero, 1999Akama & Ferraris, 2003;Akama, 2004: #170). The first ray of pelvic fin is not modified in mature males of all other examined species.…”

Systematics of the Jaguar catfish genus Liosomadoras Fowler, 1940 (Auchenipteridae: Siluriformes)

“…Measurements and meristic follow Akama & Ferraris (2003). Standard Length (SL) is expressed in mm and other measurements are expressed as either percentage of standard length or, for subunits of head, percentage of head length.…”

Relações filogenéticas da superfamília Doradoidea (Ostariophysi, Siluriformes)

“…Ferraris et al (2005) revisaram o gênero Auchenipterichthys, reconhecendo 3 espécies válidas. Reis & Borges (2006) descreveram uma espécie de Entomocorus e rediagnosticaram outras 3, sendo uma delas recentemente descrita (Akama & Ferraris, 2003). Vari & Ferraris (2006) (Ferraris, 2007;Sarmento-Soares & Martins-Pinheiro, 2008;Peixoto & Wosiaki, 2010;Ribeiro & Rapp Py-Daniel, 2010 Taylor & Van Dyke, 1985), ou preparados como esqueletos secos utilizando uma colônia de dermestídeos (para estudo osteológico).…”