Abstract
A new species of the genus Leporinus Agassiz, 1829 (Characiformes, Anostomidae) is described. The new species is similar to Leporinus amblyrhynchus, L. taeniatus, L. taeniofasciatus, L geminis, L. unitaeniatus, L. vanzoi, by having a dark longitudinal midlateral stripe and dark transversal bars on dorsum. However, the new species is distinguished from Leporinus amblyrhynchus by having four teeth on dentary (vs. three); from L. taeniatus by having 12 circumpeduncular scale series (vs. 16) and 37 to 39 scales on lateral line (vs. 36 to 37); from L. taeniofasciatus by having 12 circumpeduncular scale series (vs. 16); from L. geminis, L. unitaeniatus and L. vanzoi by having three teeth on premaxilla (vs. four), 37 to 39 scales on lateral line (vs. 40 to 43), four or five scale series above lateral line (vs. six), and 12 circumpeduncular scale series (vs. 16). The new species is distributed in the rio Teles Pires and rio Jamanxim, rio Tapajós basin, and rio Jari, clearwater tributaries of the lower portion of the Brazilian Amazon.References
Birindelli, J.L.O. & Britski, H.A. (2009) New species of the genus Leporinus Agassiz (Characiformes: Anostomidae) from the rio Curuá, rio Xingu basin, Serra do Cachimbo, Brazil, with comments on Leporinus reticulatus. Neotropical Ichthyology, 7(1), 1–10.
Britski, H.A. (1976) Sobre uma nova espécie de Leporinus da Amazônia. Acta Amazonica, 6(4) (Suplemento), 87–89.
Britski, H.A. & Garavello, J.C. (1978) Sobre Leporinus octofasciatus Steindachner da bacia do Paraná (Pisces, Anostomidae). Papéis Avulsos de Zoologia, 31(16), 237–250.
Britski, H.A. & Birindelli, J.L.O. (2008) Description of a new species of the genus Leporinus Spix (Characiformes: Anostomidae) from the rio Araguaia, Brazil, with comments on the taxonomy and distribution of L. parae and L. lacustris. Neotropical Ichthyology, 6(1), 45–52.
Buckup, P.A. & Santos, G.M. (2010) Ictiofauna da ecorregião Tapajós-Xingu: fatos e perspectivas. Boletim da Sociedade Brasileira de Ictiologia, 98, 3-–9.
Castilhos, Z.C., Bidone, E.D. & Lacerda, L.D. (1998) Increase of the background human exposure to Mercury through fish consumption due to gold mining at the Tapajós river region, Pará State, Amazon. Bulletin of the Environmental Contamination and Toxicology, 61, 202–209.
Feitosa, F.S. (2011) Taxonomia e distribuição dos peixes anostomídeos na bacia do rio Tapajós, Brasil. Unpublished MSc. Dissertation, Instituto Nacional de Pesquisas da Amazônia, Manaus, 77 pp.
Garavello, J.C. & Britski, H.A. (2003). Family Anostomidae. In: Reis, R.E., S.O. Kullander & Ferraris Jr., C.J. (Eds.). Check List of the Freshwater Fishes of South and Central America. Edipucrs, Porto Alegre, pp. 71–86.
Garavello, J.C. & Santos, G.M. (2009). Two new species of Leporinus Agassiz, 1829 from Araguaia-Tocantins system, Amazon basin, Brazil (Ostariophysi, Anostomidae). Brazilian Journal of Biology, 69(1), 109–116.
Sidlauskas, B.L. & Vari, R.P. (2008) Phylogenetic relationships within the South American fish family Anostomidae (Teleostei, Ostariophysi, Characiformes). Zoological Journal of the Linnean Society, 154, 70–210.
Sidlauskas, B.L., Mol, J.H. & Vari, R.P. (2011) Dealing with allometry in linear and geometric morphometrics: a taxonomic case study in the Leporinus cylindriformis group (Characiformes: Anostomidae) with description of a new species from Suriname. Zoological Journal of the Linnean Society, 162, 103–130.