A New Species of Freshwater Crab of The Genus Fredius Pretzmann, 1967 from The Middle Amazon River Basin, Brazil (Crustacea: Decapoda: Pseudothelphusidae)

2009 ◽  
Vol 122 (1) ◽  
pp. 81-86 ◽  
Author(s):  
Célio Magalhães
Keyword(s):  
New Species ◽  
River Basin ◽  
Amazon River ◽  
Freshwater Crab ◽  
Amazon River Basin ◽  
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.

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).

Species of Ancistrus (Siluriformes, Loricariidae) from Ecuador, with the description of a new species from the Amazon River Basin

Zootaxa ◽  
2018 ◽  
Vol 4527 (2) ◽  
pp. 211
Author(s):  
FRANCISCO PROVENZANO R. ◽  
RAMIRO BARRIGA-SALAZAR
Keyword(s):  
New Species ◽  
River Basin ◽  
The Other ◽  
Amazon River ◽  
Amazon River Basin ◽  
Freshwater Systems ◽  
The Pacific ◽  
Coloration Pattern ◽  
Fish Collection ◽  
A New Species

To elucidate the species of the genus Ancistrus that inhabit freshwater systems of Ecuador, cataloged lots of the Fish Collection, Museo de la Escuela Politécnica Nacional (MEPN), in Quito, were analyzed. Four species were identified: Ancistrus alga (Cope, 1872), A. malacops (Cope, 1872), A. clementinae Rendahl, 1937, and a new species that herein is described. Ancistrus clementinae inhabits aquatic systems of the Pacific slope, mostly in the Guayas River drainage. The other three species live in freshwater systems that drain to the Amazon River Basin. Ancistrus alga inhabit the northern and central portions of eastern Ecuador. Ancistrus malacops has a broad distribution from north to south, but is absent from the Santiago River. Both species occasionally live in sympatry. The new species is restricted to the Santiago River, in Morona-Santiago province. Each species has unique external morphological features and/or a coloration pattern that allow unambiguous identification, at least of males. This paper provides a description of the new species, and a re-description and images of the other three. 

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.

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
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