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Issue: Vol. 1372 No. 1: 4 Dec. 2006
Type: Articles
Published: 2006-12-04
DOI: 10.11646/zootaxa.1372.1.5
Page range: 53–68
Abstract views: 47
PDF downloaded: 47

Two new species of Isbrueckerichthys Derijst, 1996 (Siluriformes: Loricariidae) from the rio Paranapanema basin, Brazil

Programa de Pós-Graduação em Ciências Biológicas, Departamento de Biologia Animal e Vegetal, Centro de Ciências Biológicas, Universidade Estadual de Londrina, 86051-990, Londrina, PR. Brazil
Programa de Pós-Graduação em Ciências Biológicas, Departamento de Biologia Animal e Vegetal, Centro de Ciências Biológicas, Universidade Estadual de Londrina, 86051-990, Londrina, PR. Brazil
Laboratory of Ichthyology, Pontifícia Universidade Católica do Rio Grande do Sul, P.O. Box 1429, 90619-900, Porto Alegre, RS, Brazil
Museu de Zoologia da Universidade de São Paulo, P.O. Box 42594-970, São Paulo, SP, Brazil
Pisces Neotropics Paranapanema basin Neoplecostominae.

Abstract

Two new Isbrueckerichthys species from Paranapanema river basin are described, I. saxicola and I. calvus, respectively from ribeirão Jacutinga and rio Taquara affluents. Both species present all diagnostic characters of the genus, and differ from their congeners by having bicuspid teeth (vs. simple teeth in I. alipionis), hypertrophied odontodes along the lateral margin of head (vs. hypertrophied odontodes only at the anterior portion of snout in I. epakmos) and longer pectoral-fin spine and shorter caudal peduncle length in relation to I. duseni. The new species can be distinguished from each other by number of odontodes in each minute abdominal platelet (more than six in I. saxicola vs. at most six in I. calvus); by the presence of a plated area under the three first plates of the lateral line in I. saxicola vs. its absence in I. calvus in which this region is naked; by a exposed portion of cleithrum bordering the entire margin of the opercular opening in I. saxicola vs. bordering just the superior portion in I. calvus; and by presenting the exposed surface of supraoccipital plain or slightly convex in I. saxicola vs. strongly convex with an area without odontodes on the center in I. calvus.

References

  1. Armbruster, J.W. (2004) Phylogenetic relationships of the suckermouth armoured catfishes (Loricariidae) with emphasis on the Hypostominae and the Ancistrinae. Zoological Journal of the Linnean Society, 141, 1–80.

    Bockmann, F.A. & Ribeiro, A.C. (2003) Description of a new suckermouth armored catfish of the genus Pareiorhina (Siluriformes: Loricariidae), from southeastern Brazil. Ichthyological Exploration of Freshwaters, 14, 231–242.

    Boeseman, M. (1968) The Genus Hypostomus Lacépède, 1803, and its Surinam representatives (Siluriformes, Loricariidae). Museu de Historia Natural de Leiden (The Netherlands). Zoologische Verhandelingen, 99, 1–89.

    Derijst, E. (1996) Note on the type species of the mailed catfish genus Hemipsilichthys Miranda Ribeiro, 1918 (Pisces: Siluriformes; Loricariidae), with the introduction of Isbrueckerichthys nom. nov. Aquarium Wereld, 49, 62–64.

    Gosline, W.A. (1947) Contributions to the classification of the loricariid catfishes. Arquivos do Museu Nacional, 41, 79–134.

    Isbrücker, I.J.H. (1980) Classification and catalogue of the mailed Loricariidae (Pisces, Siluriformes). Verslagen en Technische Gegevens, Instituut voor Taxonomische Zoölogie, Universiteit van Amsterdam, 22, 1–181.

    Montoya-Burgos, J.L., S. Muller, C. Weber & J. Pawlowski. (1998) Phylogenetic relationships of the Loricariidae (Siluriformes) based on mitochondrial rRNA gene sequences. In: Malabarba, L.R., Reis, R.E., Vari, R.P., Lucena, Z.M.S. & Lucena, C.A.S. (Ed.), Phylogeny and Classification of Neotropical Fishes, Edipurcs, Porto Alegre, 363–374.

    Muller, S.F., Mazzoni, R. & Weber C. (2001) Genetic and morphological evidences for two new sibling species of Ancistrus (Siluriformes: Loricariidae) in upper rio Tocantins drainage, Brazil. Ichthyological Exploration Freshwaters, 12, 289–304.

    Oyakawa, O.T., Akama, A., Mautari, K.C. & Nolasco, J.C. (2006) Peixes de riachos da Mata Atlântica nas Unidades de Conservação do Vale do Rio Ribeira de Iguape no Estado de São Paulo, Editora Neotrópica, São Paulo, 201 pp.

    Pereira, E.H. (2005) Ressurrection of Pareiorhaphis Miranda Ribeiro, 1918 (Teleostei: Siluriformes: Loricariidae), and description of a new species from the rio Iguaçu basin, Brazil. Neotropical Ichthyology, 3, 271–276.

    Pereira, E.H. & Oyakawa, O.T. (2003) Isbrueckerichthys epakmos, a new species of loricariid catfish from the rio Ribeira de Iguape basin, Brazil (Teleostei: Siluriformes). Neotropical Ichthyology, 1, 3–9.

    Pereira, E.H. & Reis, R.E. (2002) Revision of the loricariid genera Hemipsilichthys and Isbrueckerichthys (Teleostei: Siluriformes), with descriptions of five new species of Hemipsilichthys. Ichthyological Exploration of Freshwaters 13, 97–146.

    Regan, C.T. (1920) XV – Pisces. Zoological Record [1918], 55, 1–19.

    Schaefer, S.A. (1997) The neotropical cascudinhos: systematics and biogeography of the Otocinclus catfishes (Siluriformes: Loricariidae). Proceedings of the Academy of Natural Sciences of Philadelphia, 148, 1–120.

    Weber, C. (1985) Hypostomus dlouhyi, nouvelle espèce de poisson-chat cuirassé du Paraguay (Pisces, Siluriformes, Loricariidae). Revue Suisse de Zoologie, 92, 955–968.