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Article
Published: 2022-06-07

A new species of Microlepidogaster (Loricariidae: Hypoptopomatinae) from rio Pardo, a coastal drainage in eastern Brazil

IFPR—Instituto Federal do Paraná, Campus Londrina, Rua João XXIII, 600, 86060-370 Londrina, PR, Brazil. 2MZUEL—Museu de Zoologia da Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR-445, Km 380, Campus Universitário, 86057-970 Londrina, PR, Brazil.
Pisces Biodiversity Cascudinhos Freshwater fish Neotropical Taxonomy Teleostei

Abstract

A new species of Microlepidogaster is described from rio Pardo drainage, a coastal basin in eastern Brazil. This species can be differentiated from its congeners by having the following unique features: 1) anterior portion of snout with a large odontode-free band extending laterally from the anterior tip of snout to the postrostral plate 2; 2) transverse process of second dorsal-fin pterygiophore exposed and bearing odontodes; and 3) exposed area of pectoral girdle extended to the mesial symphysis, with odontodes mainly distributed in the coracoid ventral expansion. The new species is further distinguished by several other morphological non-exclusive features. Recently, some Microlepidogaster species were reallocated to Rhinolekos. The taxonomic changes involving these genera is herein discussed.

 

References

  1. Arratia, G. & Gayet, M. (1995) Sensory canals and related bones of tertiary siluriform crania from Bolivia and North America and comparison with recent forms. Journal of Vertebrate Paleontology, 15, 482–505. https://doi.org/10.1080/02724634.1995.10011243
    Britski, H.A. & Garavello, J.C. (2002) Parotocinclus jumbo, a new species of the subfamily Hypoptopomatinae from northeastern Brazil (Ostariophysi: Loricariidae). Ichthyological Exploration of Freshwaters, 13 (3), 279–288.
    Calegari, B.B. & Reis, R.E. (2010) A new species of Microlepidogaster (Siluriformes: Loricariidae: Hypoptopomatinae) from the upper rio Paraná basin, Brazil. Neotropical Ichthyology, 8 (3), 625–630. https://doi.org/10.1590/S1679-62252010000300007
    Calegari, B.B., Silva, E.V. & Reis, R.E. (2014) Microlepidogaster discontenta, a new species of hypoptopomatine catfish (Teleostei: Loricariidae) from the rio São Francisco basin, Brazil. Ichthyological Exploration of Freshwaters, 25 (3), 213–221.
    Carvalho, T.P., Lehmann A, P. & Reis, R.E. (2008) Gymnotocinclus anosteos, a new uniquely-plated genus and species of loricariid catfish (Teleostei: Siluriformes) from the upper rio Tocantins basin, central Brazil. Neotropical Ichthyology, 6 (3), 329–338. https://doi.org/10.1590/S1679-62252008000300006
    Cope, E.D. (1871) Some anatomical points of importance in the classification of the siluroids of the Amazon. Proceedings of the Academy of Natural Sciences of Philadelphia, 23, 112–113.
    Eigenmann, C.H. & Eigenmann, R.S. (1889) Preliminary notes on South American Nematognathi, II. Proceedings of the California Academy of Sciences, 2, 28–56.
    Haseman, J.D. (1911) Descriptions of some new species of fishes and miscellaneous notes on others obtaines during the expedition of the Carnegie Museum to Central South America. Annals of the Carnegie Museum, 7 (17), 315–328.
    Martins, F.O. (2016) Filogenia de Hisonotus Eigenmann & Eigenmann, 1889 (Loricariidae: Hypoptopomatinae). Unpublished D. Phil. Thesis, Universidade Estadual Paulista Júlio de Mesquita Filho, São José do Rio Preto, 244 pp.
    Martins, F.O., Andrade, B.N., Rosa, A.C. & Langeani, F. (2014) Chauliocheilos saxatilis, a new genus and species of Hypoptopomatinae from rio Jequitinhonha basin, with a unique labial appendix (Teleostei: Loricariidae). Ichthyological Exploration of Freshwaters, 25 (3), 193–204.
    Martins, F.O., Britski, H.A. & Langeani, F. (2014) Systematics of Pseudotothyris (Hypoptopomatinae: Loricariidae). Zoological Journal of the Linnean Society, 170, 822–874. https://doi.org/10.1111/zoj.12107
    Martins, F.O., Calegari, B.B. & Langeani, F. (2013) Microlepidogaster arachas, a new species of the hypoptopomatinae catfish (Siluriformes: Loricariidae) from the upper rio Paraná basin, Brazil. Zootaxa, 3608 (5), 379–388. https://doi.org/10.11646/zootaxa.3608.5.6
    Martins, F.O., Cherobim, A.M., Andrade, B.N. & Langeani, F. (2017) Microlepidogaster negomata, a new hypoptopomatine catfish (Loricariidae: Hypoptopomatinae) from Rio São Francisco basin, southeastern Brazil. Zootaxa, 4276 (2), 233–244. https://doi.org/10.11646/zootaxa.4276.2.5
    Martins, F.O. & Langeani, F. (2011) Rhinolekos, a new genus with three new species of Hypoptopomatinae (Siluriformes: Loricariidae) from upper rio Paraná. Neotropical Ichthyology, 9 (1), 65–78. https://doi.org/10.1590/S1679-62252011000100004
    Martins, F.O. & Langeani, F. (2011) Microlepidogaster dimorpha, a new species of Hypoptopomatinae (Siluriformes: Loricariidae) from the upper rio Paraná system. Neotropical Ichthyology, 9 (1), 79–86. https://doi.org/10.1590/S1679-62252011000100005
    Martins, F.O., Rosa, A.C. & Langeani, F. (2014) Microlepidogaster discus, a new species of Hypoptopomatinae (Siluriformes: Loricariidae) from the rio Jequitinhonha basin, southeastern Brazil. Zootaxa, 3873 (5), 560–570. https://doi.org/10.11646/zootaxa.3873.5.6
    Ministério do Meio Ambiente (MMA) (2000) Avaliação e ações prioritárias para a conservação da biodiversidade da Mata Atlântica e Campos sulinos. MMA/SBF, Brasília, 40 pp.
    Reis, R.E., Britski, H.A., Britto, M.R., Buckup, P.A., Calegari, B.B., Camelier, P., Delapieve, M.L.S., Langeani, F., Lehmann, P.A., Lucinda, P.H.F., Marinho, M., Martins, F.O., Menezes, N.A., Moreira, C.R., De Pinna, M.C.C., Pavanelli, C.S., Py-Daniel, L.H.R. & Sousa, L.M. (2019) Poor taxonomic sampling undermines nomenclatural stability: A reply to Roxo et al. (2019). Zootaxa, 4701 (5), 497–500. https://doi.org/10.11646/zootaxa.4701.5.10
    Reis, R.E. & Schaefer, S.A. (1998) New cascudinhos from southern Brazil: systematics, endemism, and relationships (Siluriformes, Loricariidae, Hypoptopomatinae). American Museum novitates, 3254, 1–25.
    Roxo, F.F., Ochoa, L.E., Sabaj, M.H., Lujan, N.K., Covain, R., Silva, G.S.C., Melo, B. F., Albert, J. S., Chang, J., Foresti, F., Alfaro, M.E. & Oliveira, C. (2019) Phylogenomic reappraisal of the Neotropical catfish family Loricariidae (Teleostei: Siluriformes) using ultraconserved elements. Molecular Phylogenetics and Evolution, 135, 148–165. https://doi.org/10.1016/j.ympev.2019.02.017
    Sabaj, M.H. (2020) Codes for Natural History Collections in Ichthyology and Herpetology. Copeia, 108 (3), 593–669. https://doi.org/10.1643/ASIHCODONS2020
    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.
    Schaefer, S.A. (1998) Conflict and resolution: impact of new taxa on phylogenetic studies of the neotropical cascudinhos (Siluroidei: Loricariidae). In: Malabarba, L.R., Reis, R.E., Vari, R.P., Lucena, Z.M.S. & Lucena, C.A.S. (Eds.), Phylogeny and Classification of Neotropical Fishes. Edipucrs, Porto Alegre, pp. 375–400.
    Taylor, W.R. & Van Dike, G.C. (1985) Revised procedures for staining and clearing small fishes and other vertebrates for bone and cartilage study. Cybium, 9 (2), 107–119.