scholarly journals Squamata, Serpentes, Micrurus silviae Di-Bernardo, Borges-Martins and Silva, 2007: presence confirmation in Paraguay

Check List ◽  
2011 ◽  
Vol 7 (6) ◽  
pp. 809 ◽  
Author(s):  
Pier Cacciali ◽  
Daniel Espínola ◽  
Silvia Centrón Viñales ◽  
Irene Gauto Espínola ◽  
Hugo Cabral
Keyword(s):  
South America ◽  
Rio Grande ◽  
South American ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Southern South America ◽  
Natural Grassland

Micrurus silviae is a coralsnake with a triadal pattern, and is one of the eight species found in southern South America. In Paraguay there are six taxa recorded: M. altirostris, M. baliocoryphus, M. frontalis, M. pyrrhocryptus, M. corallinus, and M. lemniscatus carvalhoi. Here we present a record of M. silviae, an additional and seventh species for the country. Previously M. silviae was known only from Rio Grande do Sul state, in southern Brazil. The specimen was found in South American Mesopotamian Grasslands ecoregion, with natural grassland in the Department of Itapúa.

scholarly journals Occurrence of Cabassous tatouay (Cingulata, Dasypodidae) in Rio Grande do Sul and its potential distribution in southern Brazil

2015 ◽  
Vol 105 (2) ◽  
pp. 235-241 ◽  
Author(s):  
Stefan V. de Oliveira ◽  
Luiz L. C. Corrêa ◽  
Felipe B. Peters ◽  
Fábio D. Mazim ◽  
Felipe M. Garcias ◽  
...  
Keyword(s):  
South America ◽  
Rare Species ◽  
Ecological Niche ◽  
Potential Distribution ◽  
Ecological Niche Modeling ◽  
Rio Grande ◽  
Niche Modeling ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Southern South America

ABSTRACT Cabossous tatouay Desmarest, 1804 is considered a rare species in southern South America, and Rio Grande do Sul State, Brazil, records of the species are scarce and inaccurate. This study reports 40 localities for C. tatouay, and provides a map of the species' potential distribution using ecological niche modeling (ENM). The ENM indicated that in this region C. tatouay is associated with open grasslands, including the areas of "Pampas" and the open fields in the highlands of the Atlantic Forest. This study contributes to the information about the greater naked-tailed armadillo in southern Brazil, and provides data key to its future conservation.

scholarly journals On the fossil Remains of Panochthus Burmeister, 1866 (Xenarthra, Cingulata, Glyptodontidae) from the Pleistocene of southern Brazil

2015 ◽  
Vol 87 (1) ◽  
pp. 15-27 ◽  
Author(s):  
José D. Ferreira ◽  
Martín Zamorano ◽  
Ana Maria Ribeiro
Keyword(s):  
South America ◽  
Rio Grande ◽  
Species Level ◽  
External Morphology ◽  
Latitudinal Distribution ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Diagnostic Features ◽  
New Material

The genus Panochthus represents the last lineage of "Panochthini" recorded in the Pleistocene. This genus has a wide latitudinal distribution in South America, and in Brazil it occurs in the southern and northeastern regions. In this paper we describe new material (isolated osteoderms and caudal tube fragments) assigned to Panochthus from the state of Rio Grande do Sul (southern Brazil) and discuss some taxonomic issues related to Panochthus tuberculatus and Panochthus greslebini based on this material . The occurrence of P. greslebini is the first for outside the Brazilian Intertropical Region. In addition, we describe new diagnostic features to differentiate the osteoderms of P. greslebini and P. tuberculatus. Unfortunately, it was not possible to identify some osteoderms at the species level. Interestingly, they showed four distinct morphotypes characterized by their external morphology, and thus were attributed to Panochthus sp. Lastly, we conclude that in addition to P.tuberculatus registered to southern Brazil, there is another species of the genus, assignable to P. cf. P. greslebini. Our analysis reinforce the reliability of caudal tube characters for the classification of species of Panochthus.

scholarly journals Rediscovery of Sporophila frontalis (Verreaux, 1869) (Aves, Thraupidae) in the state of Rio Grande do Sul, southern Brazil

Check List ◽  
2017 ◽  
Vol 13 (2) ◽  
pp. 2069
Author(s):  
João Paulo Gava Just ◽  
Ricardo Dossa Colvero ◽  
Jairo José Zocche
Keyword(s):  
South America ◽  
Geographical Distribution ◽  
Atlantic Forest ◽  
Habitat Loss ◽  
Rio Grande ◽  
Species Range ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Pet Trade ◽  
Made In

The Buffy-fronted Seedeater, Sporophila frontalis (Verreaux, 1869) (Aves, Thraupidae), is a threatened passerine endemic to the Atlantic Forest of southeastern South America. Habitat loss and illegal capture for the pet trade has reduced the geographical distribution of this species. The Brazilian state of Rio Grande do Sul represents the southernmost limit of this species’ range. There, S. frontalis was last recorded in 1883, and currently this species is thought to be as extirpated in this state. After 133 years, we report photographic and audiotape records of S. frontalis, made in the municipalities of Maquiné and Mampituba, Rio Grande do Sul.

scholarly journals Further notes on the morphology and distribution of Neopaxillus echinospermus (Agaricales, Basidiomycota) in Southern Brazil

Check List ◽  
2016 ◽  
Vol 12 (1) ◽  
pp. 1834 ◽  
Author(s):  
Alexandre Gonçalves dos Santos Silva-Filho ◽  
Gilberto Coelho ◽  
Vagner Gularte Cortez
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
South America ◽  
Rio Grande ◽  
Morphological Features ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Scanning Electron

Neopaxillus echinospermus is a common but poorly understood agaric species from South America (Argentina, Bolivia, Brazil and Paraguay). In this paper, we discuss conflicting morphological features reported in the literature and expand the distribution of the species to Seasonal Deciduous and Semideciduous Forests from Rio Grande do Sul and Paraná states, respectively, in Southern Brazil. Hyphal structure of the pileipellis, presence of cheilocystidia and caulocystidia, presence of clamp connections and oleiferous (thrombopleurous) hyphae, and the basidiospore morphology under scanning electron microscopy are illustrated and discussed in detail.

scholarly journals Studies on a small collection of planorbid snails from southern south America

1969 ◽  
Vol 3 (5) ◽  
pp. 265-267
Author(s):  
Frederico S. Barbosa ◽  
Dalva A. Mello
Keyword(s):  
South America ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Porto Alegre ◽  
Southern South America ◽  
Negative Results ◽  
Small Collection

Snails belonging to Biomphalaria genus were collected from some regions of Southern South America as follows: Resistencia, province of Chaco, Argentina; Assumpcion, Paraguay; Department of Maldonado of Caneloni, Uruguay; and Pôrto Alegre, Rio Grande do Sul, Brazil. The material was classified as Biomphalaria peregrina (Orbigny) twice from Uruguay and once in Brazil; B. tenagophila (Orbigny), from Argentina and Brazil; and B. straminea (Dunker) in Paraguay. Negative results were obtained from the exposition of the abone refered snail specimens to miracidia of S. mansoni from Pernambuco, Brazil.

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. 

scholarly journals High-resolution phylogenetics and phylogeography of human immunodeficiency virus type 1 subtype C epidemic in South America

2011 ◽  
Vol 92 (7) ◽  
pp. 1698-1709 ◽  
Author(s):  
Nazle Mendonca Collaço Véras ◽  
Rebecca R. Gray ◽  
Luis Fernando de Macedo Brígido ◽  
Rosângela Rodrigues ◽  
Marco Salemi
Keyword(s):  
Human Immunodeficiency Virus ◽  
South America ◽  
Human Immunodeficiency Virus Type ◽  
Virus Type ◽  
Rio Grande ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Subtype C ◽  
Immunodeficiency Virus

Human immunodeficiency virus type 1 subtype C (HIV-1C) represents 30–65 % of HIV infections in southern Brazil, and isolated cases of HIV-1C infection have also been reported in Argentina, Uruguay, Paraguay and Venezuela. Phylogenetic studies have suggested that the Brazilian subtype C epidemic was initiated by the introduction of closely related strains. Nevertheless, because of sampling limitations, the point of entry and the timing of subtype C introduction into Brazil, as well as the origin of the founder lineage, remain controversial. The present study investigated the origin, spread and phylogeography of HIV-1C in South America. Phylogenetic analysis showed a well-supported monophyletic clade including all available strains from Brazil, Uruguay and Argentina. Only one lineage from Venezuela was unrelated to the epidemic involving the other three countries. Molecular clock and likelihood mapping analysis showed that HIV-1C introduction in Brazil dated back to the period 1960–1970, much earlier than previously thought, and was followed by a nearly simultaneous star-like outburst of viral lineages, indicating a subsequent rapid spread. Phylogeographic patterns suggested Paraná or Rio Grande do Sul as the possible entrance points of subtype C and an asymmetrical gene flow from Paraná to Sao Paulo, Santa Catarina and Rio Grande do Sul, as well as from Rio Grande do Sul to Sao Paulo fostered by the strong inter-connectivity between population centres in southern Brazil. The study illustrates how coupling phylogeography inference with geographical information system data is critical to understand the origin and dissemination of viral pathogens and potentially predict their future spread.

scholarly journals Crustacea Isopoda collected during the Oc/S "Almirante Saldanha" cruises in southern South America: I. Species of Serolis (Flabellifera, Serolidae)

1976 ◽  
Vol 25 (1) ◽  
pp. 113-130 ◽  
Author(s):  
Plínio Solhes Moreira
Keyword(s):  
South America ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Southern Limit ◽  
Southern South America ◽  
First Time

This paper reports on part of the species of the marine isopod genus Serolis (Crustacea, Flabellifera, Serolidae) collected from benthic stations performed during one of the cruises of the Brazil ian Navy Oc/S "Almirante Saldanha" along southern South America. The species reported are Serolis polccris Richardson, 1911, Serolis elliptica Sheppard, 1933, Serolis uaperta Moreira, 1971, and Serolis foresti Bastida & Torti, 1970. A complete synonymy is given for each of these species, as well as the main distinctive characteristics enabling its ready recognition. Some remarks are provided on features not lengthned treated on previous accounts. The geographi cal distribution of all named taxa is given. Serolis uaperta is for the first time reported from off State of Rio Grande do Sul (Brazil) and Uruguay, extending considerably southernwards its southern limit of distribution. Both Serolis foresti and Serolis elliptica are also for the first time recorded from off Uruguay.

Rhamnidium riograndense (Rhamnaceae), a new species from southern Brazil

Phytotaxa ◽  
2021 ◽  
Vol 510 (1) ◽  
Author(s):  
MAURÍCIO FIGUEIRA ◽  
BIANCA SCHINDLER
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Rio Grande ◽  
South American ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
South American Species ◽  
Present Information ◽  
Rocky Habitats ◽  
A New Species

A new species, Rhamnidium riograndense, from southern Brazil, is here described and illustrated. We present information about its distribution, habitat, phenology, conservation status and a key for all the South American species of the genus is provided. The new species is endemic to the central part of the state of Rio Grande do Sul, in the transition between Paraná and Pampean provinces in rocky habitats, mostly mountain slopes, where only four populations are currently known.

Novelties in Croton (Euphorbiaceae) from southern South America

Phytotaxa ◽  
2021 ◽  
Vol 496 (2) ◽  
pp. 189-194
Author(s):  
EDUARDO VALDUGA ◽  
MARTIN MOLZ ◽  
INÊS CORDEIRO ◽  
JOÃO IGANCI
Keyword(s):  
South America ◽  
New Record ◽  
Rio Grande ◽  
Taxonomic Revision ◽  
Field Work ◽  
The State ◽  
Rio Grande Do Sul ◽  
Type Specimens ◽  
Southern South America ◽  
Moist Forest

During a taxonomic revision of the genus Croton from the Pampas grasslands, some necessary taxonomic adjustments were identified and are here presented. The study was based on new collections, field work and analyses of protologues and type specimens. We treat C. allemii as a synonym of C. triqueter, C. stenotrichus as a synonym of C. hilarii, and we designate a lectotype for C. stenotrichus. Croton lombardianus is newly reported for Brazil and C. macrobothrys as a new record for the Atlantic Moist Forest in the state of Rio Grande do Sul. Updated information on the geographic distributions of these species is also provided. 

Sign in / Sign up

Export Citation Format

Share Document