scholarly journals A new species of Homonota (Squamata: Gekkota: Phyllodactylidae) from Paraguay

Holotipus ◽  
2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Hugo Cabral ◽  
◽  
Pier Cacciali ◽  
Keyword(s):  
New Species ◽  
South America ◽  
Phylogenetic Relationships ◽  
Morphological Analysis ◽  
Dna Analysis ◽  
Morphological Evidence ◽  
Southern South America ◽  
Comparative Morphological Analysis ◽  
Rocky Outcrops ◽  
A New Species

The 12 recognized species of the genus Homonota are geographically restricted to central and southern South America in Argentina, Brazil, Uruguay, Bolivia, and Paraguay. The phylogenetic relationships within the genus are well known where three groups are identified, each of them containing four species: the whitii group (Homonota darwinii, H. williamsii, H. whitii, and H. andicola), the borellii group (H. borellii, H. taragui, H. rupicola, and H. uruguayensis) and the horrida group (H. horrida, H. underwoodi, H. septentrionalis, and H. marthae). During fieldwork in Paraguay, we found a specimen of Homonota with unique morphological and geographical traits. Thus, we performed a comparative morphological analysis against specimens housed in different Paraguayan collections. Additionally, we performed a DNA analysis of our specimen to assess its relationships within the genus. Results suggest that this specimen represents a new species of the Homonota horrida group based on molecular and morphological evidence. The new species is characterized by a robust body, 10 longitudinal rows of strongly keeled scales separated by one or two granular scales, square-shaped mental scales, small postmental scales, one or two rows of rectangular scales in the upper eye scales, rostral scale divided, edge of auditory meatus serrated posteriorly, and black and brown background coloration with one white vertebral line and seven white transverse bands. The new species is restricted to Paraguarí Department, characterized by herbaceous grasslands with rocky outcrops.

scholarly journals Paspalum chilense (Poaceae, Paspaleae): A new species from southern South America

Phytotaxa ◽  
2015 ◽  
Vol 201 (3) ◽  
pp. 240
Author(s):  
María Paz Catanzaro ◽  
Marisa Graciela Bonasora ◽  
Pablo Rafael Speranza ◽  
Marcelo Medina-Nicolas ◽  
José F.M. Valls ◽  
...  
Keyword(s):  
New Species ◽  
South America ◽  
Molecular Evidence ◽  
Southern South America ◽  
The Core ◽  
A New Species

Paspalum chilense, a new species from Chile belonging to the informal Notata group, is described and illustrated on the basis of morphological, cytological and molecular evidence. Our evidence supports its affinity with P. barretoi and P. nummularium, from Brazil, from which it probably diverged by vicariant speciation. The limited available material of the new species was previously identified as P. pumilum or P. minus. A new key to the species of the core Notata group is provided.

A further contribution to the knowledge of Uroleucon species (Hemiptera, Aphididae) living on Adesmia (Fabaceae) in southern South America, with description of a new species from Chile

Zootaxa ◽  
2020 ◽  
Vol 4748 (3) ◽  
pp. 548-560
Author(s):  
M. PILAR MIER DURANTE ◽  
JAIME ORTEGO ◽  
CAROL D. VON DOHLEN ◽  
JUAN MANUEL NIETO NAFRÍA
Keyword(s):  
New Species ◽  
South America ◽  
Identification Key ◽  
Southern South America ◽  
Viviparous Female ◽  
A New Species

Uroleucon (Hemiptera, Aphididae, Macrosiphini) is a highly diverse and widely distributed genus. Most of its species are hosted by plants of the Asteraceae or Campanulaceae, but three species from the southern end of South America have specialized to live on plants of the genus Adesmia (Fabaceae). New morphological and chorological data are provided for U. adesmiae Mier Durante and Ortego and U. naheulhuapense Nieto Nafría & von Dohlen, with a description of the alate viviparous female of the latter species. U. australe Nieto Nafría & Mier Durante, sp. n. is described from apterous viviparous females, oviparous females and males from four localities in the Chilean regions of Aysén and Magallanes; it is very close to U. nahuelhuapense, both morphologically and genetically. Contrary to what is typical for aphids, the males of U. australe have a greater number of distinguishing characters than are found in viviparous females. A modification of the identification key to the apterous viviparous females of the known Uroleucon species in South America by Nieto Nafría et al. (2019) is presented. 

A new species ofZygodon(Orthotrichaceae) from southern South America

2006 ◽  
Vol 28 (2) ◽  
pp. 97-103 ◽  
Author(s):  
G. M. Calabrese ◽  
M. J. Elías ◽  
F. Lara
Keyword(s):  
New Species ◽  
South America ◽  
Southern South America ◽  
A New Species

A new, narrowly endemic species of Blumenbachia (Loasaceae subfam. Loasoideae) from Brazil

Phytotaxa ◽  
2015 ◽  
Vol 236 (2) ◽  
pp. 196 ◽  
Author(s):  
Tilo Henning ◽  
Samuel Siriani De Oliveira ◽  
Clemens Schlindwein ◽  
Maximilian Weigend
Keyword(s):  
New Species ◽  
South America ◽  
Endemic Species ◽  
Leaf Morphology ◽  
The Other ◽  
Flower Size ◽  
Unique Combination ◽  
Southern South America ◽  
In The Wild ◽  
A New Species

The genus Blumenbachia is restricted to Southern South America and comprises 10 species. Within that genus, monophyletic B. sect. Blumenbachia is a clearly delimited group of four previously known species. Here, a new species from Minas Gerais, Brazil, is described. Blumenbachia amana differs from the known species in ovoidal (versus spherical) capsules and in the unique combination of the inflorescence characters of B. insignis with the leaf morphology of B. latifolia, while approaching the flower size of B. catarinensis. Like all its close allies, the new species is facultatively autogamous, but pollinated by a highly specialized pollinator in the wild. It is geographically isolated from the other species and only known from two collections sites.

Bomarea rinconii (Alstroemeriaceae), a new species from the Talamanca Mountains in Chiriqui Province, Panama

Phytotaxa ◽  
2013 ◽  
Vol 105 (1) ◽  
pp. 21
Author(s):  
DANIEL ADOLFO CÁCERES GONZÁLEZ
Keyword(s):  
New Species ◽  
South America ◽  
Greater Antilles ◽  
Southern South America ◽  
The Andes ◽  
A New Species

Bomarea Mirbel (1804: 71; Alstroemeriaceae) includes 122 species (Govaerts 2013) and is divided into four subgenera (Hofreiter & Tillich 2002): Baccata (five species), Bomarea (ca. seventy species), Sphaerine(twelve species) and Wichuraea (eighteen species). Bomarea is distributed from Mexico and the Greater Antilles to southern South America (Gereau 1994). The centre of distribution of the genus is along the Andes from Colombia to Bolivia (Hofreiter 2008).

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.

On the taxonomy of southern South American species of the wolf spider genus Allocosa (Araneae: Lycosidae: Allocosinae)

Zootaxa ◽  
2017 ◽  
Vol 4216 (3) ◽  
pp. 261 ◽  
Author(s):  
MIGUEL SIMÓ ◽  
ARNO A. LISE ◽  
GABRIEL POMPOZZI ◽  
ÁLVARO LABORDA
Keyword(s):  
New Species ◽  
South America ◽  
Posterior Margin ◽  
Wolf Spider ◽  
South American ◽  
Southern Brazil ◽  
South American Species ◽  
Southern South America ◽  
First Time ◽  
A New Species

Three species of the genus Allocosa Banks, 1900 from southern South America are redescribed: Allocosa alticeps (Mello-Leitão, 1944), A. brasiliensis (Petrunkevitch, 1910) and A. senex (Mello-Leitão, 1945). The female of A. senex is described for the first time and the species is revalidated. A new species, A. marindia sp. nov. from southern Uruguay and southern Brazil is described. The new species is distinguished by the flattened terminal apophysis of the male bulb and the conspicuous pointed projections on the posterior margin of the female epigynum. The species inhabits in sandy estuarine and oceanic coasts with psammophile vegetation. 

A reassessment of Antarctic polydolopid marsupials (Middle Eocene, La Meseta Formation)

2009 ◽  
Vol 21 (3) ◽  
pp. 285-297 ◽  
Author(s):  
Laura Chornogubsky ◽  
Francisco J. Goin ◽  
Marcelo Reguero
Keyword(s):  
Spatial Distribution ◽  
New Species ◽  
South America ◽  
Middle Eocene ◽  
Early Eocene ◽  
West Antarctica ◽  
Southern South America ◽  
Early Oligocene ◽  
La Meseta Formation ◽  
A New Species

AbstractNew polydolopid marsupial specimens have been recovered from the La Meseta Formation, a late early Eocene to probably early Oligocene unit cropping out in the northern third of Seymour (Marambio) Island, at some 100 km off the northern Antarctic Peninsula. Our review of the original materials, as well as the new specimens from the same levels, led us to: 1) revalidate the genus Antarctodolops Woodburne & Zinsmeister 1984, 2) regard Eurydolops seymouriensis Case, Woodburne & Chaney 1988 as a junior synonym of Antarctodolops dailyi Woodburne & Zinsmeister, and 3) recognize a new species of this same genus: A. mesetaense. As previously stated, the polydolopid radiation might be related to the expansion of the Nothofagus flora, as both have the same spatial distribution in southern South America and West Antarctica.

scholarly journals Isoetes pedersenii, a new species from Southern South America

2010 ◽  
Vol 82 (2) ◽  
pp. 353-359 ◽  
Author(s):  
Cecilia Macluf ◽  
Esteban I. Meza Torres ◽  
Stella M. Solís
Keyword(s):  
New Species ◽  
South America ◽  
National Park ◽  
Southern South America ◽  
Herbarium Material ◽  
Electron Microscopes ◽  
Scanning Electron Microscopes ◽  
A New Species ◽  
Scanning Electron

The name Isoetes pedersenii H.P. Fuchs (Lycophyta), a species known only from the Mburucuyá National Park, Corrientes, Argentina, is validated. Observations were carried out on herbarium material with stereoscopic, light and scanning electron microscopes. The species is described and typified. A diagnosis and discussion about its distribution and its relationship with the morphology of other species of Isoetes are provided.

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