Three new species of Tovomita (Clusiaceae) from the Amazon River basin and first record of papillae for Tovomita

2016 ◽  
Vol 302 (8) ◽  
pp. 1121-1134 ◽  
Author(s):  
Lucas C. Marinho ◽  
Pedro Fiaschi ◽  
Francisco de Assis R. dos Santos ◽  
André M. Amorim
Keyword(s):  
New Species ◽  
River Basin ◽  
First Record ◽  
Amazon River ◽  
Amazon River Basin ◽  
Three New Species

Paypayrola Arenacea(Violaceae), a New Species with an Unusual Life-Form from a White Sand Savanna in the Amazon River Basin of Venezuela

2014 ◽  
Vol 19 (2) ◽  
pp. 175-184 ◽  
Author(s):  
Gerardo Aymard-C ◽  
Lisa M. Campbell ◽  
Gustavo A. Romero-González
Keyword(s):  
New Species ◽  
River Basin ◽  
Life Form ◽  
Amazon River ◽  
Amazon River Basin ◽  
White Sand ◽  
A New Species

A new species of Mastiglanis Bockmann 1994 (Siluriformes: Heptapteridae) from the Amazon River basin, Peru

Zootaxa ◽  
2020 ◽  
Vol 4820 (2) ◽  
pp. 323-336
Author(s):  
DARIO R. FAUSTINO-FUSTER ◽  
HERNÁN ORTEGA
Keyword(s):  
New Species ◽  
River Basin ◽  
Morphological Analysis ◽  
Valid Species ◽  
Amazon River ◽  
Freshwater Species ◽  
X Rays ◽  
Amazon River Basin ◽  
A New Species ◽  
Pelvic Fin

Mastiglanis is a genus of heptapterid catfish represented by two valid species. These freshwater species are widely distributed along the Amazon, Orinoco, and Maroni River basins. However, a taxonomic review of specimens collected in the Putumayo and Nanay rivers, Amazon River basin in Peru revealed a new species of Mastiglanis. A morphological analysis was completed for morphometric (36 measurements) and meristic (20 counts) data. Osteological counts and descriptions were made from clear and stained specimens and x-rays images. The new species of Mastiglanis differs from M. asopos and M. durantoni by having a long pelvic fin, short snout, eight branched anal-fin rays, and a higher number of vertebrae and gill rakers. The distribution of the new species is restricted to the upper Amazon River basin.

scholarly journals Revision of Tympanopleura Eigenmann (Siluriformes: Auchenipteridae) with description of two new species

2015 ◽  
Vol 13 (1) ◽  
pp. 1-46 ◽  
Author(s):  
Stephen J. Walsh ◽  
Frank Raynner Vasconcelos Ribeiro ◽  
Lúcia Helena Rapp Py-Daniel
Keyword(s):  
New Species ◽  
River Basin ◽  
The Body ◽  
Junior Synonym ◽  
Amazon River ◽  
Middle Portion ◽  
Amazon River Basin ◽  
Two New Species ◽  
Gas Bladder ◽  
Adult Body

The Neotropical catfish genus Tympanopleura, previously synonymized within Ageneiosus, is revalidated and included species are reviewed. Six species are recognized, two of which are described as new. Tympanopleura is distinguished from Ageneiosus by having an enlarged gas bladder not strongly encapsulated in bone; a prominent pseudotympanum consisting of an area on the side of the body devoid of epaxial musculature where the gas bladder contacts the internal coelomic wall; short, blunt head without greatly elongated jaws; and smaller adult body size. Species of Tympanopleura are distinguished from each other on the basis of unique meristic, morphometric, and pigmentation differences. Ageneiosus melanopogon and Tympanopleura nigricollis are junior synonyms of Tympanopleura atronasus. Tympanopleura alta is a junior synonym of Tympanopleura brevis. A lectotype is designated for T. brevis. Ageneiosus madeirensis is a junior synonym of Tympanopleura rondoni. Tympanopleura atronasus, T. brevis, T. longipinna, and T. rondoni are relatively widespread in the middle and upper Amazon River basin. Tympanopleura cryptica is described from relatively few specimens collected in the upper portion of the Amazon River basin in Peru and the middle portion of that basin in Brazil. Tympanopleura piperata is distributed in the upper and middle Amazon River basin, as well as in the Essequibo River drainage of Guyana.

A new phreatic catfish of the genus Phreatobius Goeldi 1905 from groundwaters of the Iténez River, Bolivia (Siluriformes: Heptapteridae)

Zootaxa ◽  
2007 ◽  
Vol 1626 (1) ◽  
pp. 51-58 ◽  
Author(s):  
LUIS FERNANDEZ ◽  
LISANDRO J. SAUCEDO ◽  
FERNANDO M. CARVAJAL-VALLEJOS ◽  
SCOTT A. SCHAEFER
Keyword(s):  
New Species ◽  
River Basin ◽  
River Mouth ◽  
Amazon River ◽  
Neural Spine ◽  
Amazon River Basin ◽  
Caudal Fin ◽  
Near Surface ◽  
Fin Ray ◽  
Fin Rays

Phreatobius sanguijuela, new species, is described from an artificial well located within the Río Paraguá drainage, a tributary of the Río Iténez, Bolivia. The new species is distinguished from its sole congener, P. cisternarum, by the absence of eyes, presence of 25–34 (versus 42–50) dorsal procurrent caudal-fin rays, 14–16 (versus 22–26) ventral procurrent caudal-fin rays, and 45–46 (versus 54–59) vertebrae. Both Phreatobius species are phreatic and known only from artificial wells penetrating near-surface aquifers of the Amazon River basin. Material of the new species represents the first records of Phreatobius from the upper Amazon, some 2000 km from reported locations of P. cisternarum near the Amazon River mouth. Phreatobius can be readily distinguished among siluriforms by the following combination of characters: dorsal and ventral procurrent caudal-fin rays extended rostrally, continuous with anal fin ventrally; caudal fin round; anal-fin rays unbranched; mouth prognathous, with jaws displaced dorsally on head; adductor mandibulae muscle hypertrophied, covering most of skull and posteriorly inserting onto first neural spine; first pectoral-fin ray soft, not spinous; bright red in life. This species is under severe threat from overexploitation by local people, who routinely capture and destroy it on the presumption that it represents a dangerous parasite.

scholarly journals The genus Pinnularia (Bacillariophyta, Pinnulariaceae) from Lago dos Tigres, Britânia, Goiás, Brazil

2016 ◽  
Vol 16 (1) ◽  
Author(s):  
Weliton José da Silva ◽  
Daiane Ruwer ◽  
Ina Nogueira ◽  
Bárbara Dunck
Keyword(s):  
River Basin ◽  
First Record ◽  
The State ◽  
Aquatic Systems ◽  
Amazon River ◽  
Taxonomic Study ◽  
Amazon River Basin ◽  
Parana River ◽  
Araguaia River ◽  
Infraspecific Taxa

Studies of the genus Pinnularia Ehrenb. are only incipient in central-western Brazil, especially in Goiás. Only 20 of the 170 taxa known from Brazil were recorded in this state until now. A taxonomic study of Pinnularia from Lago dos Tigres (Tocantins-Araguaia River Basin) recorded 20 specific and infraspecific taxa, distributed in 17 species, including P. instabilis whose lectotype is designated here. Only P. meridiana var. meridiana was previously recorded in aquatic systems of the state. Eighteen taxa are newly recorded for Goiás, and one is the first record in Brazil. The Pinnularia flora from Lago dos Tigres contains nine taxa in common with the Amazon River Basin flora, and seven other taxa that occur elsewhere in the Paraná River Basin.

Magosternarchus, a New Genus with Two New Species of Electric Fishes (Gymnotiformes: Apteronotidae) from the Amazon River Basin, South America

Copeia ◽  
1996 ◽  
Vol 1996 (3) ◽  
pp. 657 ◽  
Author(s):  
John G. Lundberg ◽  
Cristina Cox Fernandes ◽  
James Spurling Albert ◽  
Marcelo Garcia
Keyword(s):  
New Species ◽  
South America ◽  
River Basin ◽  
New Genus ◽  
Amazon River ◽  
Amazon River Basin ◽  
Two New Species ◽  
Electric Fishes

A new species of Hemigrammus (Characiformes: Characidae) from western Amazon River basin, Colombia

2019 ◽  
Author(s):  
Juan G. Albornoz‐Garzón ◽  
Alejandro Méndez‐López ◽  
Carlos DoNascimiento ◽  
Flávio C. T. Lima
Keyword(s):  
New Species ◽  
River Basin ◽  
Amazon River ◽  
Amazon River Basin ◽  
A New Species

scholarly journals A new species of Acestridium Haseman, 1911 (Loricariidae: Hypoptopomatinae) from the Eastern Amazon basin, Brazil

2007 ◽  
Vol 5 (4) ◽  
pp. 429-434 ◽  
Author(s):  
Mónica S. Rodriguez ◽  
Roberto E. Reis
Keyword(s):  
New Species ◽  
River Basin ◽  
Amazon Basin ◽  
Amazon River ◽  
Amazon River Basin ◽  
A New Species

Acestridium triplax, new species, is described from the Amazon River basin in Pará State, Brazil. The new species can be distinguished from all its congeners by having one series of middle abdominal plates between the lateral abdominal plates (vs no abdominal plates between the lateral abdominal plates).

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