scholarly journals A new species of the catfish genus Centromochlus (Siluriformes: Auchenipteridae: Centromochlinae) from the upper rio Paraná basin, Brazil

2015 ◽  
Vol 13 (1) ◽  
pp. 77-86 ◽  
Author(s):  
Luisa Maria Sarmento-Soares ◽  
José Luís Olivan Birindelli
Keyword(s):  
New Species ◽  
South America ◽  
Sao Paulo ◽  
São Paulo ◽  
Coastal Rivers ◽  
Paraná Basin ◽  
Adipose Fin ◽  
Parana Basin ◽  
A New Species

Centromochlus comprises twelve species, distributed in the main inland watersheds of South America, including the Orinoco, Essequibo, coastal rivers of Suriname, Amazon, upper Paraná and São Francisco basins. The new species is described from the upper rio Paraná based on material collected in 1965 during the construction of the UHE Ilha Solteira, São Paulo, Brazil. The new species is easily distinguished from all congeners due to absence of adipose fin, a condition otherwise restricted to Gelanoglanis nanonocticolus, among centromochlin catfishes. The new species comprises small catfishes (adults ranging from 35 to 39 mm SL), in which modified anal fin of males is devoid of denticulations or spines, and most posterior rays reduced in length. In addition, Tatia simplex Mees is transferred to Centromochlus and its generic reassignment discussed.

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.

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. 

A new species of Petunia (Solanaceae) from Corrientes, Argentina

Phytotaxa ◽  
2019 ◽  
Vol 414 (6) ◽  
pp. 289-295
Author(s):  
JULIÁN ALEJANDRO GREPPI ◽  
JUAN CARLOS HAGIWARA ◽  
JOÃO RENATO STEHMANN
Keyword(s):  
New Species ◽  
South America ◽  
Sandy Soils ◽  
Southern South America ◽  
Fruiting Stage ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species

We describe and illustrate a new species of Petunia, P. correntina, from southwestern Corrientes, Argentina, in southern South America. The species has funnel-form corolla with whitish-green tube and purple lobes, apex of longer filaments nearly straight, apex of medium filaments curved laterally and opposite each other, connivent anthers, bluish pollen, stigma located between anthers of the large and medium stamens and inflexed pedicels in fruiting stage. This suit of characters is unique into the genus. Few populations are known, inhabiting sandy soils of the Paraná basin. A key to the Argentinian species of Petunia with purple corolla is given.

Schellwienella clarkei (Orthotetida, Brachiopoda): a new species from the Devonian of the Paraná Basin, Brazil

2021 ◽  
pp. 1-15
Author(s):  
João Marcelo Pais de Rezende ◽  
Peter E. Isaacson
Keyword(s):  
New Species ◽  
South America ◽  
Shell Structure ◽  
Southern Brazil ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species

Abstract Devonian orthotetides from South America have often been uncritically assigned to a limited number of broadly described species. Schellwienella clarkei n. sp. is described from the Ponta Grossa Formation, Paraná Basin, southern Brazil. These brachiopods had been identified as Schuchertella agassizi. Schellwienella clarkei n. sp. differs from Schuchertella agassizi on the basis of shell structure, dental plates, and cardinalia. UUID: http://zoobank.org/90ebc242-42c3-4bd7-9b63-461df05b6f28

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.

scholarly journals Description of a new species of Tatia from rio Tocantins drainage, central Brazil, with notes on Tatia simplex Mees, 1974 (Siluriformes, Auchenipteridae)

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Jordson de Souza e Souza ◽  
Luisa M. Sarmento-Soares ◽  
André L. Colares Canto ◽  
Frank Raynner V. Ribeiro
Keyword(s):  
New Species ◽  
South America ◽  
Valid Species ◽  
Caudal Peduncle ◽  
Central Brazil ◽  
Coastal Rivers ◽  
Adipose Fin ◽  
Peduncle Length ◽  
A New Species

ABSTRACT Tatia comprises twenty-five valid species, distributed in the main inland watersheds of South America, including the Orinoco, Essequibo, and coastal rivers of Suriname, Amazon, upper rio Paraná and São Francisco basins. A new species is described from tributaries of upper rio Manuel Alves on uplands of Serra Geral do Tocantins plateau, Tocantins State, Brazil. It is promptly distinguished from all congeners, except Tatia britskii, due to absence of an adipose fin. It differs from T. britskii by the longer caudal peduncle length (24.1–30.5% SL, mean 25.3 vs. 20.0–22.7, mean 20.9); caudal peduncle depth (10.9–16.8 SL, mean 14.1 vs. 9.4–10.5, mean 9.8), and anterior cranial border with mesethmoid width equals its length (vs. width approximately three times its length in T. britskii). Additionally, information regarding the poorly known species Tatia simplex originally described from rio das Mortes, is provided.

New species of Neoplecostomus (Neoplecostomini: Loricariidae) lacking adipose fin from upper Rio Paraná basin, central Brazil

Zootaxa ◽  
2019 ◽  
Vol 4544 (1) ◽  
pp. 93
Author(s):  
GABRIEL S. C. SILVA ◽  
LAIS REIA ◽  
CLÁUDIO H. ZAWADZKI ◽  
FABIO F. ROXO
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Lower Lip ◽  
Central Brazil ◽  
Paraná Basin ◽  
Adipose Fin ◽  
Parana Basin ◽  
A New Species

In the present study, we describe a new species of Neoplecostomus from central Brazil. The new species is known from Córrego Cachoeira a right tributary of the upper Rio Paraná basin. It can be distinguished from all congeners by absence of adipose fin or azygous plates on the dorsum surface of the caudal peduncle. Additionally, the new species differs from N. botucatu and N. paranensis by having a dark caudal fin with a unique v-shaped hyaline vertical area and a larger lower lip. A discussion on the morphological variation of adipose fin among species of Neoplecostomus is also provided. 

A plant fossil assemblage of Lycopodiopsis cf. derbyi from the Corumbataí Formation, Paraná Basin, São Paulo State, Brazil

2021 ◽  
Author(s):  
Thaís Silvana de Carvalho ◽  
Marcelo Adorna Fernandes ◽  
Frésia Ricardi-Branco ◽  
Aline Marcele Ghilardi ◽  
Bernardo de Campos Pimenta e Marque Peixoto ◽  
...  
Keyword(s):  
Sao Paulo ◽  
São Paulo ◽  
Fossil Assemblage ◽  
Paulo State ◽  
Plant Fossil ◽  
Paraná Basin ◽  
São Paulo State ◽  
Parana Basin

A new species of the highland frog genus Holoaden (Amphibia, Strabomantidae) from cloud forests of southeastern Brazil

Zootaxa ◽  
2013 ◽  
Vol 3599 (2) ◽  
pp. 178-188 ◽  
Author(s):  
ITAMAR A. MARTINS ◽  
HUSSAM ZAHER
Keyword(s):  
New Species ◽  
Body Size ◽  
High Altitude ◽  
Ventral Surface ◽  
Sao Paulo ◽  
Southeastern Brazil ◽  
São Paulo ◽  
Cloud Forests ◽  
Serra Do Mar ◽  
A New Species

A new species of the genus Holoaden is described from the Atlantic forest of the state of São Paulo, Brazil, being restricted to primary or slightly disturbed high altitude cloud forests along the northeastern portion of the Serra do Mar. The typelocality is determined as Estação Ecológica de Bananal, in the Municipality of Bananal, State of São Paulo, Brazil. The new species is characterized by its moderate body size (female 42.6–44.2 mm SVL; male 37.2–38.5 mm SVL) with long and slender limbs, a head wider than long, a highly glandular dorsum, covered by well developed macroglands that extend to the internasal region, thigh and tibia, and an intense dark brown dorsal coloration and dark grey ventral surface.

scholarly journals A new Xenacanthiformes shark (Chondrichthyes, Elasmobranchii) from the Late Paleozoic Rio do Rasto Formation (Paraná Basin), Southern Brazil

2014 ◽  
Vol 86 (1) ◽  
pp. 135-145 ◽  
Author(s):  
VICTOR E. PAULIV ◽  
ELISEU V. DIAS ◽  
FERNANDO A. SEDOR ◽  
ANA MARIA RIBEIRO
Keyword(s):  
New Species ◽  
Longitudinal Section ◽  
Optical Microscope ◽  
Late Paleozoic ◽  
Southern Brazil ◽  
Fossil Assemblage ◽  
Transversal Section ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species

The Brazilian records on Xenacanthiformes include teeth and cephalic spines from the Parnaíba, Amazonas and Paraná basins. This work describes a new species of Xenacanthidae, collected in an outcrop of Serrinha Member of Rio do Rasto Formation (Wordian to Wuchiapingian), Paraná Basin, municipality of Jacarezinho, State of Paraná. The teeth of the new species are two or three-cuspidated and the aboral surface show a smooth concavity and one rounded basal tubercle. The coronal surface presents one semi-spherical and subcircular coronal button, and also two lateral main cusps and one central (when present) with less than one fifth of the size of the lateral cusps in the labial portion. The lateral cusps are asymmetric or symmetric, rounded in transversal section, lanceolate in longitudinal section, devoid of lateral carinae and lateral serrations, and with few smooth cristae of enameloid. In optical microscope the teeth show a trabecular dentine (osteodentine) base, while the cusps are composed by orthodentine, and the pulp cavities are non-obliterated by trabecular dentine. The fossil assemblage in the same stratigraphical level and in the whole Rio do Rasto Formation indicates another freshwater record for xenacanthid sharks.

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