Description of a new Hemigrammus Gill (Characiformes: Characidae) from the rio Madeira basin in Peru and Bolivia

Autor(es)

Ota, Rafaela P. ^[1] ; Lima, Flavio C. T. ^[2] ; Hidalgo, Max H. ^[3]

Afiliação do(s) autor(es)

^[1] Inst Nacl de Pesquisas da Amazonia, Programa Posgrad Biol Agua Doce & Pesca Interior, Av Andre Araujo 2936, BR-69060001 Manaus, Amazonas - Brazil

^[2] Univ Estadual Campinas Adao Jose Cardoso, Museu Zool, Caixa Postal 6109, BR-13083863 Campinas, SP - Brazil

^[3] Univ Nacl Mayor San Marcos, Museo Hist Nat, Av Arenales 1256, Lima 140434 - Peru

• Tipo de documento: Artigo Científico
• Fonte: Zootaxa; v. 4577, n. 2, p. 335-347, APR 5 2019.
• Citações Web of Science: 1

Resumo

We described herein a new Hemigrammus from the rio Madre de Dios and rio Mamore basins in southeastern Peru and Bolivia. The new species possess a color pattern similar to those belonging to the Hemigrammus lunatus species-group, i.e., a broad longitudinal dark stripe across the eye and a conspicuous, narrow dark stripe along the anal-fin basis. It can be easily diagnosed from the species belonging to this group by presenting the combination of the following characters: an oval, horizontally elongated humeral blotch, 6-7 upper branch and 10-12 lower branch gill-rakers, up to five cusps on broader maxillary teeth, and by lacking a midlateral dark stripe. Comments on its putative relationships are provided. Additionally, we updated the geographical distribution of Hemigrammus lunatus and H. machadoi based on an exhaustive survey of material deposited in collections. {[}Species Zoobank registration: urn:lsid:zoobank.org:act:A2ED5D61-84344A0F-BC5B-B496FB3DC191] (AU)

• Processo FAPESP: 13/20936-0 - Sistemática das piabas (gêneros Hemigrammus, Hyphessobrycon, Thayeria, Parapristella e Bryconella), com ênfase nas espécies do norte da América do Sul cis-andina
• Beneficiário: Flávio César Thadeo de Lima
• Modalidade de apoio: Bolsas no Brasil - Jovens Pesquisadores
• Processo FAPESP: 11/51532-7 - Sistemática das piabas (gênero Hemigrammus, Hyphessobrycon, Parapristella e Bryconella), com ênfase nas espécies do norte da América do Sul cisandina
• Beneficiário: Flávio César Thadeo de Lima
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores