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Type: Articles
Published: 2012-03-22
Page range: 52–58
Abstract views: 45
PDF downloaded: 19

Cordylancistrus santarosensis (Siluriformes: Loricariidae), a new species with unique snout deplatation from the Río Santa Rosa, Ecuador

Department of Biological Sciences, Auburn University, 331 Funchess, Auburn, AL 36849, USA, Telephone: (334) 844–9261, FAX: (334) 844-9234
Department of Biological Sciences, Auburn University, 331 Funchess, Auburn, AL 36849, USA, Telephone: (334) 844–9261, FAX: (334) 844-9234
Hemichordata Ancistrini suckermouth armoured catfish Ecuador South America Neotropics

Abstract

Cordylancistrus santarosensis is described based on five specimens from the Río Santa Rosa, Ecuador. This species canbe distinguished from all other members of the Chaetostoma group by having plates on the tip of the snout (except for acentral region at the extreme anterior edge), but lacking plates laterally on the head. This snout plating condition is intermediate between the fully plated snout of other Cordylancistrus and the unplated snout of Chaetostoma.

References

  1. Armbruster, J.W. (2003) Peckoltia sabaji, a new species from the Guyana Shield (Siluriformes: Loricariidae). Zootaxa, 344, 1–12.

    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.

    Armbruster, J.W. (2008) The genus Peckoltia with the description of two new species and a reanalysis of the phylogeny of the genera of the Hypostominae (Siluriformes: Loricariidae). Zootaxa, 1822, 1–76.

    Armbruster, J.W. & Taphorn, D.C. (2011) A new genus and species of weakly armored catfish from the Upper Mazaruni River, Guyana (Siluriformes: Loricariidae). Copeia, 2011, 46–52.

    Goloboff, P.A., Farris, J.S. & Nixon K.C. (2008) TNT, a free program for phylogenetic analysis. Cladistics, 24, 774–786.

    Lujan, N.K. & Armbruster, J.W. (2011) Two new genera and species of Ancistrini (Siluriformes: Loricariidae) from the Western Guiana Shield. Copeia, 2011, 216-225.

    Lundberg, J.G., Marshall, L.G., Guerrero, J., Horton, B., Claudia, M.C.S.L. & Wesselingh, F. (1998) The stage for Neotropical fish diversification: A history of tropical South American rivers. In: Malabarba, L.R., Reis, R.E., Vari, R.P., Lucena, Z.M. & Lucena, C.A.S. (Eds), Phylogeny and Classification of Neotropical Fishes, Edipucrs, Porto Alegre, Brazil, pp. 13–48.

    Provenzano, F. & Milani, N. (2006) Cordylancistrus nephelion (Siluriformes, Loricariidae), a new and endangered species of suckermouth armored catfish from the Tuy River, north-central Venezuela. Zootaxa, 1116, 29–41.

    Sabaj Pérez, M.H. (editor). (2010) Standard symbolic codes for institutional resource collections in herpetology and ichthyology: an Online Reference. Verson 2.0 (8 November 2010). Electronically accessible at http://www.asih.org/, American Society of Ichthyologists and Herpetologists, Washington, DC.

    Salcedo, N.J. (2006) Two new species of Chaetostoma (Siluriformes: Loricariidae) from the Huallaga River in central Peru. Ichthyological Exploration of Freshwaters, 17, 207–220.

    Taylor, W.R. & Van Dyke, G.C. 1985. Revised procedures for staining and clearing small fishes and other vertebrates for bone and cartilage study. Cybium, 9, 107–119.