Open Access Open Access  Restricted Access Subscription or Fee Access


DOI: http://dx.doi.org/10.11646/zootaxa.4034.3.7

A new species of Pareiorhaphis (Siluriformes: Loricariidae) from the headwaters of the Arroio Garapiá, coastal drainage of Rio Grande do Sul state, Brazil

EDSON H. L. PEREIRA, PABLO A LEHMANN, LUCAS J. SCHVAMBACH, ROBERTO E. REIS

Abstract


Pareiorhaphis garapia, new species, is described based on specimens collected in the headwaters of the Arroio Garapiá, Rio Maquiné basin, a coastal drainage of Rio Grande do Sul State, southern Brazil. The new species is distinguished from all other Pareiorhaphis species in having the nuchal plate covered by thick skin, the exposed posterior process of the cleithrum comparatively narrow, and the last segment of the preopercular ramus of the latero-sensory canal reduced to an ossified tubule. The absence of a dorsal-fin spinelet, the reduced number of plates in the dorsal and mid-dorsal series of lateral plates, and morphometric traits also distinguish the new species from its congeners. The restricted geographic distribution of P. garapia, endemic to a headwater stream of the Rio Maquiné basin, and the syntopic occurrence of P. nudulus are discussed.

 


Keywords


Pisces, taxonomy, systematics, biodiversity, Neotropical, fish, conservation

Full Text:

PDF/A (3.77 MB)

References


Malabarba, L.R., Carvalho Neto, P., Bertaco, V.A., Carvalho, T.P., Santos, J.F. & Artioli, L.G.S. (2013) Guia de identificação dos peixes da bacia do rio Tramandaí. Via Sapiens, Porto Alegre, 140 pp.

Pereira, E.H.L., Vieira, F. & Reis, R.E. (2007) A new species of sexually dimorphic Pareiorhaphis Miranda Ribeiro, 1918 (Siluriformes: Loricariidae) from the rio Doce basin, Brazil. Neotropical Ichthyology, 5, 443–448.
http://dx.doi.org/10.1590/S1679-62252007000400003

Pereira, E.H.L., Vieira, F. & Reis, R.E. (2010) Pareiorhaphis scutula, a new species of neoplecostomine catfish (Siluriformes: Loricariidae) from the upper rio Doce basin, Southeastern Brazil. Neotropical Ichthyology, 8, 33–38.---

Pereira, E.H.L., Lehmann, A.P. & Reis, R.E. (2012) A new species of the neoplecostomine catfish Pareiorhaphis (Siluriformes: Loricariidae) from the coastal basins of Espírito Santo, eastern Brazil. Neotropical Ichthyology, 10, 539–546.
http://dx.doi.org/10.1590/S1679-62252012000300006

Pereira, E.H.L. & 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.

Reis, R.E., Malabarba, L.R. & Lucena, C.A.S. (2014) A new species of Rhamdella Eigenmann & Eigenmann, 1888 (Siluriformes: Heptapteridae) from the coastal basins of southern Brazil. Arquivos de Zoologia, 45, 41–50.
http://dx.doi.org/10.11606/issn.2176-7793.v45iespp41-50

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.

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.


Refbacks

  • There are currently no refbacks.


 
ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa