02784nab a2200289 a 4500 AR-ReUNN 20260702003057.0 260630s2006 ag |||||||||||||||||eng eng Vari, Richard P. 147579 Ferraris Jr., Carl 147580 The South American catfish genus Auchenipterus Valenciennes, 1840 - Ostariophysi : Siluriformes : Auchenipteridae - : monophyly and relationships, with a revisionary study / Carl J. Ferraris Jr., Richard P. Vari 2006 64 páginas Disponible en caja 22 no 9 de INICNE The Neotropical catfishes of the genus Auchenipterus Valenciennes (1840) are reviewed. The genus is hypothesized to be a monophyletic assemblage on the basis of the shared presence of grooves in the ventral surface of the head that accommodate adducted mental barbels. A possible second synapomorphy, the presence of papillae on the dorsal and medial surface of the ossified maxillary barbel of mature males, is tentatively advanced pending discovery of adult males of three species. Contrary to previous hypotheses which considered Auchenipterus to consist of a maximum of five species, we recognize 11 species, including two previously undescribed forms, A. britskii and A. menezesiAuchenipterus is broadly distributed through the Río Orinoco, Rio Amazonas, and Río de La Plata basins, and the coastal drainages of the Guianas, with one species in the Rio Pindaré-Mirim and Rio Parnaíba basins of northeastern Brazil. Auchenipterus nuchalis, previously thought to be broadly distributed across the range of the genus, is found to rather have a restricted distribution in the eastern portions of the Amazon basin, the lower portions of the Rio Tocantins, and lower courses of some rivers in Suriname and French Guiana. Citations of A. nuchalis from elsewhere in the range of the genus are of other species. Euanemus Müller & Troschel (1842) and Ceratocheilus Miranda Ribeiro (1918) are considered synonyms of Auchenipterus. Euanemus colymbetes Müller & Troschel (1842) is considered a synonym of Auchenipterus dentatus Valenciennes (1840), and A. paysanduanus Devincenzi (1933) is placed into the synonymy of A. nigripinnis Boulenger (1895). A neotype is designated for Hypopthalmus nuchalis Spix & Agassiz (1829). Lectotypes are designated for Euanemus colymbetes and Auchenipterus nigripinnis. Inland Waters 117440 Freshwater Fish 117439 Peces de Agua Dulce 6471 Catfish 147560 Rio de la Plata 7617 Argentina 4258 Zoological Journal of the Linnean Society v. 126 (1999) 234702 ART (INICN)36126 234703 234703 234703 AR-ReUNN spa AR-ReUNN aacr2