A Review of the South American Electric Fish Genus Porotergus (Gymnotiformes: Apteronotidae) with the Description of a New Species

Copeia ◽  
2010 ◽  
Vol 2010 (1) ◽  
pp. 165-175 ◽  
Author(s):  
Carlos David de Santana ◽  
William G. R. Crampton
Keyword(s):  
New Species ◽  
Electric Fish ◽  
South American ◽  
The South ◽  
A New Species

Taxonomy of the South American genus Pachypops Gill 1861 (Teleostei: Perciformes: Sciaenidae), with the description of a new species

Zootaxa ◽  
2002 ◽  
Vol 26 (1) ◽  
pp. 1 ◽  
Author(s):  
LILIAN CASATTI
Keyword(s):  
New Species ◽  
River Basins ◽  
Junior Synonym ◽  
Valid Species ◽  
Nominal Species ◽  
South American ◽  
The South ◽  
Haemal Spine ◽  
A New Species ◽  
Fin Spines

Pachypops is a South American freshwater sciaenid genus characterized by having two anal-fin spines, three mental barbels, an inferior mouth, a swimbladder with a pair of short appendages anteriorly and a pair of longer appendages projected posteriorly, and the haemal spine of the first caudal distinctly expanded. Three valid Pachypops species are recognized herein. Of the six nominal species previously assigned to Pachypops, two are herein recognized as valid (Perca fourcroi and Micropogon trifilis), two are assigned to other sciaenid genera (Pachypops adspersus and Pachypops cevegei) and two are considered junior synonyms (Corvina biloba and Pachypops camposi). A seventh nominal species, Pachyurus nattereri, formerly considered a valid species of Pachyurus, is determined to be a junior synonym of Pachypops fourcroi, and lectotype and paralectotypes are designated for it. Pachypops fourcroi occurs in the Orinoco, Amazonas, Essequibo, Corantijn, and Approuague River basins, and Pachypops trifilis in rivers of Guyana and middle and lower reaches of the Rio Amazonas basin. A third valid species, Pachypops pigmaeus n. sp., is herein described from tributaries of the Rio Amazonas, Brazil.

scholarly journals Priogymnanthus colombianus (Oleaceae), a new species and first record of genus to Colombia

Phytotaxa ◽  
2019 ◽  
Vol 399 (3) ◽  
pp. 195
Author(s):  
JOSÉ LUIS FERNÁNDEZ-ALONSO ◽  
PAULA ANDREA MORALES MORALES
Keyword(s):  
New Species ◽  
First Record ◽  
Dry Forest ◽  
South American ◽  
The South ◽  
A New Species ◽  
Iucn Criteria

Priogymnanthus colombianus, a new species and the first record of the South American genus of Oleaceae for Colombia is described and illustrated also we present a dichotomic key for the known species of genus. The new species differs from the three knowns for Priogymnanthus by: leaves oblong or oblong-elliptic, completely glabrous, petioles 10–17 (19) mm; inflorescences 15–20 (25) mm in length, with glabrous rachis, anthers about 3 mm length; fruits (10) 12–15 mm in diameter. P. colombianus occurs on premontane and dry forest in Colombia between 719 and 1213 m of elevation. Based on general threats to its ecosystems and few records found, we categorize the species as EN (endangered) following IUCN criteria.

The bee genus Ruizantheda (Hymenoptera: Halictidae), its scope and description of a new species

Zootaxa ◽  
2009 ◽  
Vol 2282 (1) ◽  
pp. 62-68
Author(s):  
ROCIO ANA GONZALEZ-VAQUERO ◽  
ARTURO ROIG-ALSINA
Keyword(s):  
New Species ◽  
South American ◽  
Santa Fe ◽  
The South ◽  
Diagnostic Characteristics ◽  
A New Species

The South American caenohalictine genus Ruizantheda is understood to comprise Halictus proximus Spinola, Halictus divaricatus Vachal, and the new species Ruizantheda centralis from Argentina. The new species is intermediate between the first two, bridging the gap in morphology observed in these rather different species. Diagnostic characteristics for the genus are indicated; a key and a comparative table of characters for the three species are given. The new species, which occurs in the provinces of Santa Fe, Santiago del Estero and Chaco, in Argentina, is described and illustrated.

A New Species of the South American Genus Nassauvia (Compositae: Mutisieae) from Chilean Patagonia

Brittonia ◽  
1988 ◽  
Vol 40 (3) ◽  
pp. 332 ◽  
Author(s):  
Mary T. Kalin Arroyo ◽  
Clodomiro Marticorena
Keyword(s):  
New Species ◽  
South American ◽  
The South ◽  
Chilean Patagonia ◽  
A New Species

A new species of Osteocephalus from Ecuador and a redescription of O. leprieurii (Duméril & Bibron, 1841) (Anura: Hylidae)

2002 ◽  
Vol 23 (1) ◽  
pp. 21-46 ◽  
Author(s):  
Walter Hödl ◽  
Karl-Heinz Jungfer
Keyword(s):  
New Species ◽  
Sexual Activity ◽  
Amazon Basin ◽  
French Guiana ◽  
Colour Change ◽  
South American ◽  
The South ◽  
A New Species

AbstractThe South American spiny-backed treefrog, Osteocephalus leprieurii, as previously understood, is a composite of several species. We redescribe it morphologically on the basis of specimens from French Guiana and add other data on the biology of the species. We describe O. mutabor n. sp., previously confused with O. leprieurii, from the Amazon Basin of Ecuador. The two species differ in coloration, vocalizations and ontogenetic colour change. Osteocephalus leprieurii is remarkable for bearing nuptial excrescences not only on the thumb, but also under the fingers and on the chin. The vocal sac is semicircular expanding posterolaterally. Osteocephalus mutabor n. sp. is characterized by numerous dark transversal bars on the dorsum and a semicircular vocal sac. The amount of keratinized tips on the dorsal granules in males of both species is dependent on sexual activity. Bajo el nombre de la rana arborícola de espalda espinosa Osteocephalus leprieurii, de Sur America, como se ha entendido anteriormente, se confundieron diferentes especies. Se describe de nuevo la especie morfológicamente en base a especimenes de la Guayana Francesa y se añaden otros datos sobre su biología. Describimos O. mutabor n. sp. de la Cuenca Amazónica Ecuatoriana. Ambas especies se diferencian en coloración, vocalizaciones y cambio ontogenético de color. Osteocephalus leprieurii se caracteriza por poseer excrecencias nupciales no solo en el pulgar, sino también bajo los dedos y la barbilla. El saco vocal es semicircular con expansión posterolateral. Osteocephalus mutabor n. sp. se caracteriza por tener rayas oscuras transversales en el dorso y un saco vocal semicircular. La cantidad de puntas queratinizadas en los gránulos dorsales de los machos de ambas especies depende de la actividad sexual.

A new species of Arthrobrachus Solier, Arthrobrachus arquatus n. sp. (Coleoptera: Melyridae) from the South American Transition Zone, Argentina

Zootaxa ◽  
2018 ◽  
Vol 4441 (3) ◽  
pp. 537
Author(s):  
PATRICIA M. ESTRADA
Keyword(s):  
New Species ◽  
Transition Zone ◽  
Adult Male ◽  
South American ◽  
The South ◽  
Central Chile ◽  
Male And Female ◽  
A New Species

A new species of Arthrobrachus Solier, A. arquatus n. sp. from Argentina, is described using external characters of the adult male and female including terminal segments of the abdomen and genitalia. Arthrobrachus arquatus n. sp. is morphologically close to A. tibialis Solier, 1849 from the Central Chile sub region, suggesting a phylogenetic connection. Comments on the possible origin of this relationship are made. 

A new species ofCinclodesfrom the Espinhaço Range, southeastern Brazil: insights into the biogeographical history of the South American highlands

Ibis ◽  
2012 ◽  
Vol 154 (4) ◽  
pp. 738-755 ◽  
Author(s):  
Guilherme H. S. Freitas ◽  
Anderson V. Chaves ◽  
Lílian M. Costa ◽  
Fabrício R. Santos ◽  
Marcos Rodrigues
Keyword(s):  
New Species ◽  
Southeastern Brazil ◽  
South American ◽  
The South ◽  
Espinhaço Range ◽  
History Of ◽  
History Of The South ◽  
A New Species

A new species and a new combination in the South American genus Lessingianthus (Vernonieae, Asteraceae) 

Phytotaxa ◽  
2014 ◽  
Vol 186 (4) ◽  
pp. 207
Author(s):  
Maria Betiana Angulo ◽  
Massimiliano Dematteis
Keyword(s):  
New Species ◽  
Detailed Analysis ◽  
Type Material ◽  
New Combination ◽  
South American ◽  
The South ◽  
A New Species

A detailed analysis of the type material of Vernonia oxyodonta clearly indicates that it is morphologically identical to Lessingianthus glabratus because it has glabrous leaves, pedunculate heads at the end of the inflorescence, outer phyllaries with acute apex and inner phyllaries with obtuse and mucronulate apex, and 30–40 florets per head. Consequently, all the specimens identified as V. oxyodonta are placed to a new species, L. pubescens. Also, V. pseudoincana is transferred to the genus Lessingianthus. This species belongs to the L. rubricaulis complex but can be distinguished from the remaining taxa of the group by its lanceolate leaves, grayish phyllaries, and habitat.

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