Synopsis
The Andean and preandean regions are characterized by the presence of several endorheic drainage basins, each of which has evolved a characteristic fish fauna, some of which are poorly known or hitherto inaccessible. We describe here a new species of Trichomycterus from Aguarague National Park, Bolivia. Trichomycterus aguarague is considered to belong to a species assemblage comprised of T. alterus, T. boylei, T. ramosus, and T. belensis, a group diagnosed by three putative apomorphic conditions: (1) base of the maxillary barbel wide and engrossed like a skin flap or fold, (2) premaxillary bone smaller than maxilla, and (3) odontodes embedded in thick integument that covers interopercle. Alternatively, T. aguarague and T. alterus share an unusual number of five or fewer abdominal vertebrae, which is a synapomorphy for the group composed of Scleronema, Ituglanis, and the Stegophilinae+Tridentinae+Vandelliinae+Glanapteryginae+Sarcoglanidinae clade. The new species differs from all congeners in having the following combination of characters: caudal peduncle depth 13.5 – 16.0% SL, 15 or 16 pairs of ribs, 15 dorsal procurrent rays, 12 ventral procurrent rays, 8 pectoral fin rays; 9 anal fin rays; barbels and skin of trunk with numerous, minute thread-like papillae.
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References
G. Arratia (1990) The South American Trichomycterinae (Teleostei: Siluriformes), a problematic group G. Peters R. Hutterer (Eds) Vertebrates in the Tropics Museum Alexander Koening Bonn, Germany 395–403
G. Arratia (1998) ArticleTitleSilvinichthys, a new genus of trichomycterid catfishes from the Argentinean Andes, with redescription of Trichomycterus nigricans Ichthyological Exploration of Freshwaters 9 347–370
G. Arratia L. Huaquin (1995) ArticleTitleMorphology of the lateral line system and of the skin of diplomystid and certain primitive loricarioid catfishes and systematic and ecological considerations Bonner Zoologische Monographien 36 1–110
G. Arratia S. Menu-Marque (1984) ArticleTitleNew catfishes of the genus Trichomycterus from the high Andes of South America (Pisces, Siluriformes) with remarks on distribution and ecology Zoologische Jahrbuch, Systematik 11 493–520
J. Baskin (1973) Structure and relationships of the Trichomycteridae City University of New York New York 389
L. Casatti (2003) ArticleTitleBiology of a catfish, Trichomycterus sp. (Pisces, Siluriformes), in a pristine stream in the Morro do Diabo State Park, southeastern Brazil Studies Neotropical Fauna Environmental 38 105–110 Occurrence Handle10.1076/snfe.38.2.105.15928
L. Casatti R.M.C. Castro (1998) ArticleTitleA fish community of the Sao Francisco River headwaters riffles, southeastern Brazil Ichthyological Exploration of Freshwaters 9 229–242
R.M.C. Castro L. Casatti (1997) ArticleTitleThe fish fauna from a small forest stream of the upper Paraná River basin, southeastern Brazil Ichthyological Exploration of Freshwaters 7 337–352
W.J.E.M. Costa F.A. Bockmann (1993) ArticleTitleUn nouveau genre néotropical de la famille des Trichomycteridae (Siluriformes: Loricariodei) Revue Francaise Aquariologie 20 43–46
C.H. Eigenmann (1918) ArticleTitleThe Pygidiidae, a family of South American catfishes Memoirs of the Carnegie Museum 7 259–398
W.N. Eschmeyer (1998) Catalog of fishes California Academy of Sciences San Francisco 2905
L. Fernández (2000a) ArticleTitleRedescription of the teleost Trichomycterus barbouri (Eigenmann, 1911), occurrence in Argentina and comparison with related species (Ostariophysi: Siluriformes: Trichomycteridae) Studies of Neotropical Fauna & Environment 35 27–33 Occurrence Handle10.1076/0165-0521(200004)35:1;1-M;FT027
L. Fernández (2000b) ArticleTitleA new species of Trichomycterus from northwestern Argentina (Ostariophysi: Trichomycteridae) Ichthyological Exploration of Freshwaters 11 349–354
L. Fernández (2001) ArticleTitleNuevos registros Trichomycterus Valenciennes e Ituglanis Costa y Bockmann (Teleostei: Siluriformes) en Argentina, Paraguay y Bolivia Neotropica 47 103–105
L. Fernández S.A. Schaefer (2003) ArticleTitleTrichomycterus yuska, a new species from high elevations of Argentina (Siluriformes: Trichomycteridae) Ichthyological Exploration of Freshwaters 14 353–360
L. Fernández R.P. Vari (2000) ArticleTitleA new species of Trichomycterus (Teleostei: Siluriformes: Trichomycteridae) lacking a pelvic girdle from the Andes of Argentina Copeia 2000 990–996
L. Fernández R.P. Vari (2002) ArticleTitleA new species of Trichomycterus from the Andes of Argentina with a redescription of Trichomycterus alterus (Siluriformes: Trichomycteridae) Copeia 2002 739–747
A.E. Leviton R.H. Gibbs SuffixJr. E. Heal C.E. Dawson (1985) ArticleTitleStandards in herpetology and ichthyology. Part I. Standard symbolic codes for institutional resource collections in herpetology and ichthyology Copeia 1985 802–832
G.S. Myers (1944) ArticleTitleTwo extraordinary new blind nematognath fishes from the Río Negro, representing a new subfamily of Pygidiidae, with a rearrangement of the genera of the family, and illustrations of some previously described genera and species from Venezuela and Brazil Proceeding of the California Academy of Sciences 23 591–602
H. Ortega (1992) Biogeografía de los peces de aguas continentales del Perú, con especial referencia a especies registradas a altitudes superiores a los 1000 m K.R. Young N. Valencia (Eds) Biogeographia, ecología y conservación del bosque montano en el Perú Universidad Nacional Mayor de San Marcos Memorias del Museo Historia Natural 21, Lima, Perú 39–45
M.C.C. Pinna Particlede (1989) ArticleTitleA new sarcoglanidine catfish, phylogeny of its subfamily, and an appraisal of the phyletic status of the Trichomycterinae (Teleostei, Trichomycteridae) American Museum Novitates 2950 1–39
M.C.C. Pinna Particlede (1992) ArticleTitleA new subfamily of Trichomycterizdae (Teleostei, Siluriformes), lower loricarioid relationships and a discussion on the impact of additional taxa for phylogenetic analysis Journal of the Linnean Society, Zoology 106 175–229
M.C.C. Pinna Particlede (1998) Phylogenetic relationships of Neotropical Siluriformes (Teleostei: Ostariophysi); historical overview and synthesis of hypotheses L.R. Malabarba R.E. Reis R.P. Vari Z.M.S. Lucena C.A.S. Lucena (Eds) Phylogeny and Classification of Neotropical Fishes Edipucrs, Porto Alegre, Rio Grande do Sul Brazil 279–330
Ringuelet, R.A., R.A. de Aramburu & R. Aramburu. 1967. Los peces de agua dulce de la República Argentina. Comisión Nacional Investigación Científica Buenos Aires, 602 pp
S.A. Schaefer (2003) ArticleTitleRelationships of Lithogenes villosus Eigenmann, 1909 (Siluriformes, Loricariidae): evidence from high-resolution computed microtomography American Museum Novitates 3401 1–55 Occurrence Handle10.1206/0003-0082(2003)401<1:ROLVES>2.0.CO;2
W.R. Taylor G.C. Dyke ParticleVan (1985) ArticleTitleRevised procedures for staining and clearing small fishes and other vertebrates for bone and cartilage study Cybium 9 107–119
V. Tchernavin (1944) ArticleTitleA revision of some Trichomycterinae based on material preserved in the British Museum (Natural Histoty) Proceeding of the Zoological Society of London 114 234–275
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Fernández, L., Osinaga, K. A New Trichomycterus (Siluriformes: Trichomycteridae) from Aguarague National Park of the Bolivian Preandean Region, with Comments on Relationships within of the Genus. Environ Biol Fish 75, 385–393 (2006). https://doi.org/10.1007/s10641-005-5065-4
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DOI: https://doi.org/10.1007/s10641-005-5065-4