A new species of the rodent genusNecromysAmeghino (Cricetidae: Sigmodontinae: Akodontini) from the Chaco Serrano grasslands of northwestern Argentina

2016 ◽  
Vol 97 (5) ◽  
pp. 1321-1335 ◽  
Author(s):  
J. Pablo Jayat ◽  
Guillermo D’Elía ◽  
Pablo E. Ortiz ◽  
Pablo Teta
Keyword(s):  
New Species ◽  
Northwestern Argentina ◽  
Chaco Serrano ◽  
A New Species

Description of a new species of Andaeschna (Odonata: Aeshnidae) from the Western Colombian Andes

Zootaxa ◽  
2019 ◽  
Vol 4615 (3) ◽  
pp. 594-600
Author(s):  
CORNELIO ANDRÉS BOTA-SIERRA ◽  
JULIANA SANDOVAL-H ◽  
FREDY PALACINO-RODRÍGUEZ
Keyword(s):  
New Species ◽  
National Park ◽  
Distal Segment ◽  
The Other ◽  
Northwestern Argentina ◽  
The Andes ◽  
Colombian Andes ◽  
Unique Shape ◽  
A New Species

Andaeschna is a small and poorly known genus of dragonflies that inhabits the Andes, from Venezuela to northwestern Argentina. Here we describe Andaeschna occidentalis sp. nov., first species of the genus recorded in the Western Andes, specifically from the Tatamá National Park in Colombia. Males of this species can be differentiated from the other four species in the genus by the unique shape of the distal segment of the vesica spermalis. Likewise, females can be distinguished by their smaller and broader cerci (slightly shorter than S9) and its subquadrate point. The discovery of this beautiful species expands the range of the genus, previously known only in the Eastern Andes. 

A new species of Astyanax (Characiformes: Characidae) from the endorheic RRo SalR basin, Tucumán, northwestern Argentina

Zootaxa ◽  
2007 ◽  
Vol 1646 (1) ◽  
pp. 31-39 ◽  
Author(s):  
JUAN MARCOS MIRANDE ◽  
GAST[N AGUILERA ◽  
MARQA DE LAS MERCEDES AZPELICUETA
Keyword(s):  
New Species ◽  
Short Distance ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Northwestern Argentina ◽  
Tooth Position ◽  
Maxillary Tooth ◽  
Fin Rays ◽  
A New Species ◽  
Pelvic Fin

Astyanax puka, new species from the endorheic RRo SalR basin, is diagnosed by the following combination of characters: shallow body (33.5–39.8 % SL), 36–38 perforated scales in lateral line, 6/5 transverse scales, 9–10 gradually decreasing dentary teeth, distally expanded premaxillary teeth, one distally expanded maxillary tooth with 7–9 cusps, short upperjaw length (34.5–37.8 % HL), short maxilla (20.7–23.3 % HL) expanded abruptly under maxillary tooth position, short postorbital distance (36.6–46.9 % HL), short distance between pelvic and anal-fin origins (17.1–20.6 % SL), 22–27 branched anal-fin rays, long caudal peduncle (13.3–16.5 % SL), bony hooks restricted to pelvic-fin rays 2 to 6 and anterior 6–13 branched anal-fin rays on mature males, and the presence of broad denticles on anterior, lateral, and posterior edges of first ceratobranchial gill rakers.

A new species of the Liolaemus darwinii group (Iguania: Liolaemidae) from Salta Province, Argentina

Zootaxa ◽  
2011 ◽  
Vol 2968 (1) ◽  
pp. 26 ◽  
Author(s):  
CRISTIAN SIMÓN ABDALA ◽  
ANDRÉS SEBASTIÁN QUINTEROS ◽  
FEDERICO ARIAS ◽  
SABRINA PORTELLI ◽  
ANTONIO PALAVECINO
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Sexual Dichromatism ◽  
New Taxon ◽  
Northwestern Argentina ◽  
Unique Color ◽  
Males And Females ◽  
A New Species

We describe a new species of the iguanian genus Liolaemus of Northwestern Argentina in Salta Province. This new lizard is a member of the L. boulengeri group, and within this group it is a member of the L. darwinii subgroup. With the addition of the species described here, the L. darwinii group now contains 19 species. Like most of the members of this group, the new taxon exhibits sexual dichromatism, showing a unique color pattern in males and females. The color pattern is characterized by the presence of a pre-scapular spot and lateral black stripes, unique within the L. darwinii group. Liolaemus diaguita sp nov inhabits a region where bushes are the predominant vegetation, in Quebrada de Las Conchas, in Guachipas Department, Salta Province, which has an elevation between 1200–2500 m.

ALFREDSTELZNERITE: A NEW SPECIES OF CALCIUM BORATE HYDRATE FROM THE SANTA ROSA MINE, SALTA, NORTHWESTERN ARGENTINA

2010 ◽  
Vol 48 (1) ◽  
pp. 123-128
Author(s):  
M. A. Galliski ◽  
M. A. Cooper ◽  
M. F. Marquez-Zavalia ◽  
F. C. Hawthorne
Keyword(s):  
New Species ◽  
Calcium Borate ◽  
Northwestern Argentina ◽  
A New Species

scholarly journals Endoparasites of Fat-Tailed Mouse Opossums (Thylamys: Didelphidae) from Northwestern Argentina and Southern Bolivia, with the Description of a New Species of Tapeworm

2008 ◽  
Vol 94 (5) ◽  
pp. 1098-1102 ◽  
Author(s):  
F. Agustín Jiménez ◽  
Janet K. Braun ◽  
Mariel L. Campbell ◽  
Scott L. Gardner
Keyword(s):  
New Species ◽  
Northwestern Argentina ◽  
A New Species

A new species of Xotodon (Notoungulata, Toxodontidae) from northwestern Argentina

2018 ◽  
Vol 38 (1) ◽  
pp. e1425882 ◽  
Author(s):  
Matías A. Armella ◽  
Daniel A. García-lópez ◽  
Lucía Dominguez
Keyword(s):  
New Species ◽  
Northwestern Argentina ◽  
A New Species

A new species of the genus Oxymycterus (Mammalia: Rodentia: Cricetidae) from the vanishing Yungas of Argentina

Zootaxa ◽  
2008 ◽  
Vol 1911 (1) ◽  
pp. 31-51 ◽  
Author(s):  
J. PABLO JAYAT ◽  
GUILLERMO D’ELÍA ◽  
ULYSES F. J. PARDIÑAS ◽  
M. DANIELA MIOTTI ◽  
PABLO E. ORTIZ
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Cytochrome B ◽  
Dna Sequences ◽  
White Spot ◽  
Advanced Level ◽  
Northwestern Argentina ◽  
Molecular Studies ◽  
A New Species

Morphological and molecular studies allowed us to recognize a new species of Oxymycterus from the southern end of the Yungas of Argentina. External morphologic traits allow the new species, Oxymycterus wayku, to be differentiated from O. paramensis and O. akodontius, the two currently recognized species for northwestern Argentina, as well as from the remaining species of the genus. Those traits include very dark general coloration, ears covered with nearly black hairs, a white spot on the chin, and claws on fore and hind feet long and robust. Cranial characteristics of the new species include wide and relatively shallow zygomatic notches, proportionally short incisive foramina and molar series, and a relatively robust braincase compared to O. paramensis. Phylogenetic analysis based on cytochrome b DNA sequences corroborates the distinctiveness of Oxymycterus wayku n. sp. Observed divergence values support this distinction. This new species is particularly important from a conservation viewpoint due to its rarity and the advanced level of alteration of its habitat.

scholarly journals Jenynsia luxata, a new species from Northwestern Argentina, with additional observations of J. maculataRegan and phylogeny of the genus (Cyprinodontiformes: Anablepidae)

2013 ◽  
Vol 11 (3) ◽  
pp. 565-572 ◽  
Author(s):  
Gastón Aguilera ◽  
Juan Marcos Mirande ◽  
Pablo A. Calviño ◽  
Luis Fernando Lobo
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
Phylogenetic Analyses ◽  
Northwestern Argentina ◽  
Pelvic Bones ◽  
New Information ◽  
Left And Right ◽  
Equal Weighting ◽  
A New Species

Jenynsia luxata, a new species from northwestern Argentina, is described. This species is diagnosable from all other Jenynsia by the medial processes of left and right pelvic bones relatively reduced and separated from each other. The new species resembles J. multidentata, but it is further distinguished from this species by the absence of a swelling between the urogenital opening and the anterior base of the anal fin in females and details of coloration. Phylogenetic analyses, both under implied and equal weighting, recover the subgenera Plesiojenynsia and Jenynsia as monophyletic units. New information on previously missing characters of Jenynsia maculata is added. These data and phylogenetic characters coded for the new species herein described contribute to a better resolution of the phylogenetic relationships within the subgenus Jenynsia, which is herein supported by additional synapomorphies relative to previous phylogenies.

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