scholarly journals A new Hasemania Ellis from the upper rio Paraná basin, with the redescription of Hasemania crenuchoides Zarske & Géry (Characiformes: Characidae)

2015 ◽  
Vol 13 (3) ◽  
pp. 479-486 ◽  
Author(s):  
Jane Piton Serra ◽  
Francisco Langeani
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Phylogenetic Relationships ◽  
Rio Grande ◽  
Minas Gerais ◽  
Dorsal Fin ◽  
Rio Grande Basin ◽  
Fin Rays ◽  
Paraná Basin ◽  
Parana Basin

A new Hasemania species is described from the headwaters of the rio Uberaba, rio Grande basin, State of Minas Gerais, Brazil. The new species is distinguished from its congeners by a combination of a black, vertically-elongate humeral spot, a single ossification in the position primitively occupied by infraorbitals four and five, four teeth on the inner series of premaxilla, and scales covering the anal-fin base. Hasemania crenuchoides is redescribed and its known geographic distribution is extended; it can be differentiated from other species of the genus by the combination of a black vertically-elongate humeral spot, ii,8 dorsal-fin rays, 11-14 branched anal-fin rays, the presence of separate infraorbitals four and five, and the presence of scales covering the anal-fin base. Phylogenetic relationships of H. crenuchoides and the new species within Hasemania are discussed.

scholarly journals Hyphessobrycon uaiso: new characid fish from the rio Grande, upper rio Paraná basin, Minas Gerais State (Ostariophysi: Characidae), with a brief comment about some types of Hyphessobrycon

2013 ◽  
Vol 11 (3) ◽  
pp. 525-536 ◽  
Author(s):  
Fernando R. Carvalho ◽  
Francisco Langeani
Keyword(s):  
New Species ◽  
New Records ◽  
Rio Grande ◽  
Minas Gerais ◽  
Dorsal Fin ◽  
Minas Gerais State ◽  
Fin Rays ◽  
Paraná Basin ◽  
Parana Basin ◽  
Pelvic Fin

Hyphessobrycon uaiso is described from the upper rio Paraná basin, rio Grande drainage, Minas Gerais State. The new species differs from its congeners by the short anal fin with 12-17 branched rays, and dorsal fin with ii,7-8 rays. Besides, it can be distinguished by the presence of i,5-6 pelvic fin rays, and by the coloration of the eyes (in life), slightly blue on the lower half and blackish on the upper half. New records of Hyphessobryconare recognized for the upper rio Paraná basin: H. eilyos Lima & Moreira, H. guarani Mahnert & Géry, and H. herbertaxelrodi Géry. The knowledge status about the ichthyofauna from the upper rio Paraná basin and comments about the type material of some species of Hyphessobrycon are briefly discussed.

Bunocephalus hertzi, a new banjo catfish from the upper Rio Paraná basin, Brazil (Siluriformes: Aspredinidae), with the redescription of Bunocephalus larai Ihering, 1930

Zootaxa ◽  
2020 ◽  
Vol 4742 (1) ◽  
pp. 105-116
Author(s):  
ANDRÉ L. H. ESGUÍCERO ◽  
RICARDO M. C. CASTRO ◽  
THIAGO N. A. PEREIRA
Keyword(s):  
New Species ◽  
Coracoid Process ◽  
Pectoral Fin ◽  
Caudal Fin ◽  
Type Series ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Paraná Basin ◽  
Parana Basin

Bunocephalus hertzi, new species, is described from two tributaries of the upper Rio Paraná basin. Because the type series of B. larai (the only other species of Bunocephalus in the basin) is lost, a redescription of B. larai is also provided herein. Bunocephalus larai and B. hertzi can be distinguished from all its congeners, except B. minerim, by the absence of an epiphyseal bar (vs. present). From B. minerim, both species can be distinguished by the presence of 10 principal caudal-fin rays (vs. 9). Bunocephalus hertzi can be differentiated from B. larai by the longer coracoid process size (11.9–16.2% vs. 6.7–9.8% SL), shorter maxillary barbel (just reaching the pectoral fin origin; 54.6–67.4% vs. 73.7–84.6% HL) and skull ornamentation represented by five bony protuberances between the posterior end of the occipital and the origin of the dorsal fin (vs. four bony protuberances). 

scholarly journals Iheringichthys syi (Siluriformes: Pimelodidae), a new pimelodid species from upper Paraná basin, Brazil

2012 ◽  
Vol 10 (1) ◽  
pp. 45-52
Author(s):  
María de las Mercedes Azpelicueta ◽  
Heraldo A. Britski
Keyword(s):  
New Species ◽  
Standard Length ◽  
Anterior Margin ◽  
Head Length ◽  
Dorsal Fin ◽  
Eye Diameter ◽  
Paraná Basin ◽  
Adipose Fin ◽  
Parana Basin ◽  
A New Species

We describe a new species of pimelodid catfish of the genus Iheringichthys from the upper Paraná basin, Brazil. Iheringichthys syi n. sp. is distinguished by the comparatively fine serration along the anterior margin of the pectoral-fin spine, an adpressed dorsal-fin remote from the adipose-fin origin, a large eye (23.2-31.2% of head length), narrow interorbital (16.2-23.0% of head length), long snout (42.0-51.0% of head length), long postorbital length (30.6-34.0% of head length), low adipose fin (4.8-7.8% of standard length), eye diameter 97.0-140.0% of interorbital length, and body with numerous, small dots irregularly scattered on flanks, especially marked on anterior half of flank.

scholarly journals Astyanax totae, a new characid species (Teleostei: Characidae) from the upper rio Iguaçu basin, southeastern Brazil

2005 ◽  
Vol 3 (3) ◽  
pp. 383-388 ◽  
Author(s):  
Carolina Ferreira Haluch ◽  
Vinícius Abilhoa
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Southeastern Brazil ◽  
Caudal Fin ◽  
Dark Stripe ◽  
Fin Rays ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species ◽  
Small Tributary

A new species of characid fish, Astyanax totae, is described from a small tributary in the upper drainage of the rio Iguaçu, Paraná basin, Brazil. The new species is distinct from most species of Astyanax by the vertically elongated humeral spot, slightly expanded above the lateral line to posterodorsal margin of opercle, followed by a midlateral dark stripe expanded from the humeral region to the median caudal-fin rays, maxilla with 2 to 5 teeth (usually 3) and 15 to 18 branched anal-fin rays.

Description of a new species of the Melanorivulus pictus species-group (Cyprinodontiformes: Rivulidae) from the Rio Paraná basin in Brazil

Zootaxa ◽  
2020 ◽  
Vol 4852 (1) ◽  
pp. 125-132
Author(s):  
ERIC VENTURINI YWAMOTO ◽  
DALTON TAVARES BRESSANE NIELSEN ◽  
CLAUDIO OLIVEIRA
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Rio Grande ◽  
Species Group ◽  
Sao Paulo ◽  
Paulo State ◽  
Paraná Basin ◽  
Parana Basin ◽  
Ventral Area ◽  
A New Species

A new species of the genus Melanorivulus belonging to the Melanorivulus pictus species group is herein described, from a tributary of the Rio Grande, Rio Paraná basin, São Paulo State, Brazil. The new species can be distinguished from all other species of the Melanorivulus pictus species group by the unique presence of sides of body of males light bluish gray with 10–12 oblique red bars, 8 of which chevron-like, bifurcated and complete, i.e., running from dorsum to ventral area, and 2–4 incomplete, with vertices of the chevron-like bars along midbody, pointing forward. Comments on the putative relationships of the new species, as well as concerning its conservation status, are presented. 

scholarly journals A new species of Bryconamericus (Characidae: Stevardiinae: Diapomini) from the upper rio Paraná basin, Brazil

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
Fernando C. Jerep ◽  
Oscar A. Shibatta
Keyword(s):  
New Species ◽  
Valid Species ◽  
Sexually Dimorphic ◽  
Body Depth ◽  
Fin Rays ◽  
Paraná Basin ◽  
Parana Basin ◽  
Cis And Trans ◽  
In Cis ◽  
A New Species

ABSTRACT Bryconamericus is the most diverse genus within Stevardiinae, comprising 61 valid species distributed in Cis- and Trans-Andean basins from Panama in Central America to northern Argentina in South America. Three species are known from the upper rio Paraná basin: B. exodon, B. iheringii, and B. turiuba. Herein we describe a new species of Bryconamericus from the upper rio Paraná basin inhabiting tributaries of Ivaí, Piquiri, and Tibagi basins, Paraná State, Brazil. The new species differs from its congeners by the presence of unaligned teeth in the outer tooth row of the premaxilla; a single, vertical, dorsally expanded and rounded humeral spot; 36-39 pored scales in the longitudinal series; body depth 31.6-37.9% SL; anal-fin base length 24.8-30.1% SL; number of branched anal-fin rays 19-22, and bony hooks on pelvic- and anal-fin rays of sexually dimorphic males. The new species is syntopic with other Stervadiinae in the upper rio Paraná basin such as B. iheringii, B. turiuba, Piabarchus stramineus, and Piabina argentea.

Neoplecostomus canastra, a new catfish (Teleostei: Siluriformes) species from upper Rio Paraná basin

Zootaxa ◽  
2017 ◽  
Vol 4294 (2) ◽  
pp. 226 ◽  
Author(s):  
FÁBIO F. ROXO ◽  
GABRIEL S. C. SILVA ◽  
CLÁUDIO H. ZAWADZKI ◽  
CLAUDIO OLIVEIRA
Keyword(s):  
New Species ◽  
Molecular Techniques ◽  
The Body ◽  
Head Length ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Interorbital Width ◽  
Paraná Basin ◽  
Adipose Fin ◽  
Parana Basin

In this study, we describe a new species of Neoplecostomus from córrego Tamborete, municipality of Capitólio, Minas Gerais state, upper rio Paraná basin. The new species is distinguished from its congeners by the presence of conspicuous dark spots all over the body. Moreover, the new species can be diagnosed by the absence of moderate keels along each lateral series of plates, presence of developed adipose fin, absence of enlarged, fleshy folds between dentaries, dorsal-fin spinelet larger than dorsal-fin spine, lacking enlarged odontodes along lateral margins of snout and along ridges before eyes, having reduced number of dentary teeth, having two irregular and conspicuous rows of large and transversally-flattened papillae, just posterior to dentary teeth, smaller mandibullary width/head length, smaller Interorbital width/mandibullary width, smaller number of lateral-line plates, higher and lower number of dentary teeth depending of the species compared, absence of a conspicuous sexual dimorphism, absence of a conspicuous horseshoe-shaped light blotch posterior to the supraoccipital, with a central dark area which rarely contacts the edge of the light area, smaller mandibulary width/head length, smaller Interorbital width/Mandibullary width and a greater Caudal peduncle length/Caudal peduncle depth. Furthermore, we used DNA barcoding techniques of 2% threshold criteria and GMYC model to distinguish the new species from its congeners. These molecular techniques were unable to distinguish the new species from N. langeanii and N. selenae from N. botucatu, that were differentiated using external morphology. 

Hepaticites iporangae n. sp., Rio Bonito Formation, Early Permian (Sakmarian), Paraná Basin, Brazil, Western Gondwana

2011 ◽  
Vol 85 (2) ◽  
pp. 360-368 ◽  
Author(s):  
Fresia Ricardi-Branco ◽  
Rafael Souza Faria ◽  
André Jasper ◽  
Margot Guerra-Sommer
Keyword(s):  
New Species ◽  
South America ◽  
Rio Grande ◽  
Climatic Conditions ◽  
Formal Description ◽  
Early Permian ◽  
Rio Grande Do Sul ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species

The formal description of a liverwort from the Paraná Basin is presented. The fossil was found in the Rio Bonito Formation, Early Permian (Sakmarian), and is identified as a new species of the genus Hepaticites, named H. iporangae n. sp. The samples studied were collected from the macrofossil-rich roof-shale layer of the Quitéria Outcrop in the municipality of Encruzilhada do Sul, state of Rio Grande do Sul, Brazil. H. iporangae is one of the oldest liverworts reported from South America. The fossil described here provides more evidence of the relative diversity of liverworts in Paleozoic Gondwana despite the severe climatic conditions during the glaciations of the Permo-Carboniferous.

A new species of Otothyropsis (Siluriformes: Loricariidae) from the upper Río Paraná basin, Paraguay, with a discussion of the limits between Otothyropsis and Hisonotus

Zootaxa ◽  
2017 ◽  
Vol 4244 (2) ◽  
pp. 231 ◽  
Author(s):  
BÁRBARA B. CALEGARI ◽  
WALTER GILL MORLIS ◽  
ROBERTO E. REIS
Keyword(s):  
New Species ◽  
Morphological Traits ◽  
Posterior Border ◽  
Posterior Portion ◽  
Dorsal Fin ◽  
Coloration Pattern ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species ◽  
Fin Spines

Otothyropsis dialeukos is described from Itá creek, tributary to the upper Río Paraná basin, Paraguay. The new species is distinguished from its congeners by having a unique caudal-fin coloration pattern composed of a brown to almost black background with roundish hyaline blotches in the middle of the outermost branched rays and a hyaline posterior border interrupted in middle rays; abdomen entirely covered by enlarged plates, without naked areas; longer pectoral- and dorsal-fin spines; absence of a raised crest of enlarged odontodes on the posterior portion of the parieto-supraoccipital, and other morphometric and meristic features. Morphological traits and geographic distributions of all species of Otothyropsis and Hisonotus are analyzed and a discussion on the limits between those genera is presented. 

scholarly journals A new long-finned Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the lower rio Paraná basin, Brazil

2014 ◽  
Vol 12 (1) ◽  
pp. 71-79 ◽  
Author(s):  
Luiz F. C. Tencatt ◽  
Marcelo R. Britto ◽  
Carla S. Pavanelli
Keyword(s):  
New Species ◽  
Dorsal Fin ◽  
Paraná Basin ◽  
Probable Occurrence ◽  
Itaipu Dam ◽  
Parana Basin ◽  
A New Species

A new species of Corydoras is described from the lower rio Paraná basin, just downstream from Itaipu Dam, Brazil, close to Paraguay boundary. The new species can be distinguished from most of its congeners by the infraorbital 2 with a posterior laminar expansion conspicuously reduced, first and second dorsal-fin branched rays conspicuously elongated in males, mesethmoid entirely covered by skin, and by the presence of four to six irregular black or brownish blotches on the midline of the flank. The probable occurrence of the new species in the floodplain of the upper portion of the rio Paraná drainage is discussed.

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