Taxonomic revision of thorny catfish genus Hassar (Siluriformes: Doradidae)

Autor(es)

Birindelli, Jose L. O. ^[1] ; Fayal, Danielle F. ^[2] ; Wosiacki, Wolmar B. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Museu Zool, BR-04218970 Sao Paulo - Brazil

^[2] Museu Paraense Emilio Goeldi, Setor Ictiol, BR-66040170 Belem, PA - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Neotropical Ichthyology; v. 9, n. 3, p. 515-542, JUL-SEP 2011.
• Citações Web of Science: 9

Resumo

The genus Hassar (Doradidae) is diagnosed by a single exclusive feature: basioccipital with ventral ring-like arch surrounding aorta; and by the combination of several non-exclusive characters, including dark blotch in distal half of anterior branched rays of dorsal fin, and anteriormost postinfranuchal scutes reduced in size. Three nominal species are recognized and redescribed in Hassar: H. orestis from the Orinoco, Essequibo and Amazonas basins, excluding Tocantins and middle to upper Xingu drainages; H. wilderi from Tocantins; and H. affinis from northeastern Brazil, including Turiacu, Pindare-Mearim, Itapecuru and Parnaiba drainages. The nominal Hemidoras notospilus and Hassar ucayalensis are recognized as junior synonyms of Hassar orestis; Hassar woodi is considered a junior synonym of H. affinis; Hassar iheringi is recognized as a junior synonym of H. wilderi, and its type locality as originally reported is considered incorrect. A fourth new species, Hassar gabiru, is described from middle to upper Xingu river basin. Hassar is considered to be the sister taxon of Anduzedoras + Leptodoras. A detailed anatomical description and discussion of the phylogenetic relationships of Hassar among fimbriate-barbel doradids are provided. (AU)

• Processo FAPESP: 10/51250-9 - Relações filogenéticas do gênero Leporinus Agassiz (Ostarophysi, Characiformes, Anostomidae)
• Beneficiário: José Luís Olivan Birindelli
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado