Skip to main content Skip to main navigation menu Skip to site footer
Type: Article
Published: 2024-06-04
Page range: 112-126
Abstract views: 90
PDF downloaded: 1

Two new species of the armored catfish genus Panaqolus (Siluriformes, Loricariidae) from the Ecuadorian Amazon

Centro MBUCV; Instituto de Zoología y Ecología Tropical; Facultad de Ciencias; UCV; Caracas; Venezuela; Current address: Avenida Descubrimientos; No.20; 5B; Torrejón de Ardoz; 28850; Madrid; Spain
Departamento de Biología; Facultad de Ciencias; Escuela Politécnica Nacional; Quito; Ecuador
Department of Environmental Biology; SUNY College of Environmental Science and Forestry; Syracuse; New York; 13210; USA
Pisces Andean piedmont Diversity Freshwater fishes Neotropics Taxonomy

Abstract

Currently four described species of genus Panaqolus have been reported from the Amazon River basin in Ecuador: P. albomaculatus (Kanazawa 1958), P. dentex (Günther 1868), P. gnomus (Schaefer & Stewart 1993) and P. nocturnus (Schaefer & Stewart 1993). Revision of specimens deposited at the fish collection of Museo de la Escuela Politécnica Nacional (MEPN), Quito, indicated the presence of two additional species, both new to science: P. orcesi n. sp. and P. pantostiktos n. sp. The new species are similar to each other, and to P. albomaculatus and P. nix Cramer & Rapp Py-Daniel 2015 in having the head, body, and fins covered with light dots. Diagnostic characters comprise differences in color pattern, including size and density of light dots on head, body, and fins; as well as various morphometric characters. Apparently, both new species reach larger sizes than previously described species of Panaqolus. The two new species can be included in the subgenus Panafilus (Lujan et al. 2017); they come from the Tigre and Napo River basins, two isolated tributaries in the western Amazon.

 

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), 1–80. https://doi.org/10.1111/j.1096-3642.2004.00109.x
  2. Barriga, R. (2012) Lista de peces de agua dulce e intermareales del Ecuador. Revista Politécnica, 30 (3), 83–119. [https://bibdigital.epn.edu.ec/handle/15000/5068]
  3. Boeseman, M. (1968) The genus Hypostomus Lacépède, 1803, and its Surinam representatives (Siluriformes, Loricariidae). Zoologische Verhandelingen, 99 (1), 1–89.
  4. Chockley, B.R. & Armbruster, J.W. (2002) Panaque changae, a new species of catfish (Siluriformes: Loricariidae) from eastern Peru. Ichthyological Exploration of Freshwaters, 13 (1), 81–90.
  5. Cramer, C.A. (2014) Redescription of Panaqolus purusiensis (LaMonte, 1935) (Siluriformes: Loricariidae) with identification key to the species of the genus. Neotropical Ichthyology, 12, 61–70. https://doi.org/10.1590/S1679-62252014000100006
  6. Cramer, C.A., Bonatto, S.L. & Reis, R.E. (2011) Molecular phylogeny of the Neoplecostominae and Hypoptopomatinae (Siluriformes: Loricariidae) using multiple genes. Molecular Phylogenetics and Evolution, 59 (1), 43–52. https://doi.org/10.1016/j.ympev.2011.01.002
  7. Cramer, C.A. & Rapp Py-Daniel, L.H. (2015) A new species of Panaqolus (Siluriformes: Loricariidae) from the rio Madeira basin with remarkable intraspecific color variation. Neotropical Ichthyology, 13 (3), 461–470. https://doi.org/10.1590/1982-0224-20140099
  8. Cramer, C.A. & de Sousa, L.M. (2016) A new species of tiger pleco Panaqolus (Siluriformes: Loricariidae) from the Xingu Basin, Brazil. PLoS ONE, 11, e0165388. https://doi.org/10.1371/journal.pone.0165388
  9. Fisch-Muller, S., Montoya-Burgos, J.I., Le Bail, P.-Y. & Covain, R. (2012) Diversity of the Ancistrini (Siluriformes: Loricariidae) from the Guianas: the Panaque group, a molecular appraisal with descriptions of new species. Cybium, 36 (1), 163–193.
  10. Fricke, R., Eschmeyer, W.N. & van der Laan, R. (eds.) (2024) Eschmeyer’s Catalog of Fishes: Genera, Species, References. Electronic version. Available from: http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatmain.asp (accessed 15 MarCH 2024)
  11. Isbrücker, I.J.H., Seidel, I., Pieter-Michels, J., Schraml, E. & Werner, A. (2001) Diagnose vierzehn neuer gattungen der familie Loricariidae Rafinesque, 1815 (Teleostei, Ostariophysi). Die Aquarien und Terrarienzeitschrift (DATZ), Sonderheft Harnischwelse, 2, 17–24. [https://hdl.handle.net/11245/1.188878]
  12. Kanazawa, H. (1958) A new species of catfish, family Loricariidae, from Ecuador. Copeia, 1958 (4), 327–328. https://doi.org/10.2307/1439967
  13. Lujan, N.K., Hidalgo, M. & Stewart, D.J. (2010) Revision of Panaque (Panaque), with descriptions of three new species from the Amazon Basin (Siluriformes, Loricariidae). Copeia, 2010 (4), 676–704. https://doi.org/10.1643/CI-09-185
  14. Lujan, N.K., Steele, S. & Velasquez, M. (2013) A new distinctively banded species of Panaqolus (Siluriformes: Loricariidae) from the western Amazon Basin in Peru. Zootaxa, 3691 (1), 192–198. https://doi.org/10.11646/zootaxa.3691.1.8
  15. Lujan, N.K., Armbruster, J.W., Lovejoy, N.R. & López Fernández, H. (2015) Multilocus molecular phylogeny of the suckermouth armored catfishes (Siluriformes: Loricariidae) with a focus on subfamily Hypostominae. Molecular Phylogenetics and Evolution, 82, 269–288. https://doi.org/10.1016/j.ympev.2014.08.020
  16. Lujan, N.K., Cramer, C.A., López-Fernández, H., Covain, R. & Fisch-Muller, S. (2017) Multilocus molecular phylogeny of the ornamental wood-eating catfishes (Siluriformes, Loricariidae, Panaqolus and Panaque) reveals undescribed diversity and parapatric clades. Molecular Phylogenetics and Evolution, 109, 321–336. https://doi.org/10.1016/j.ympev.2016.12.040
  17. Sabaj, M.H. (2023) Codes for Natural History Collections in Ichthyology and Herpetology (online supplement). Version 9.5. American Society of Ichthyologists and Herpetologists, Washington, D.C. Available from: https://asih.org, (accessed Nov 2023)
  18. Schaefer, S.A. & Stewart, D.J. (1993) Systematics of the Panaque dentex species group (Siluriformes: Loricariidae), wood-eating armored catfishes from tropical South America. Ichthyological Exploration of Freshwaters, 4 (4), 309–342.
  19. Tan, M., de Souza, L.S. & Armbruster, J.W. (2016) A new species of Panaqolus (Siluriformes: Loricariidae) from the rio Branco. Neotropical Ichthyology, 14, e150033. https://doi.org/10.1590/1982-0224-20150033