Exostigma, a New Genus of Astereae (Compositae) from Southern South America

2012 ◽  
Vol 37 (2) ◽  
Author(s):  
Gisela Snacho
Keyword(s):  
South America ◽  
New Genus ◽  
Southern South America

Revised circumscription of Nothofagus and recognition of the segregate genera Fuscospora, Lophozonia, and Trisyngyne (Nothofagaceae)

Phytotaxa ◽  
2013 ◽  
Vol 146 (1) ◽  
pp. 1 ◽  
Author(s):  
PETER B. HEENAN ◽  
ROB D. SMISSEN
Keyword(s):  
Phylogenetic Analysis ◽  
South America ◽  
Papua New Guinea ◽  
New Genus ◽  
New Caledonia ◽  
Sequence Data ◽  
Morphological Characters ◽  
New Combinations ◽  
Southern South America ◽  
Dna Sequence Data

The generic taxonomy of the Nothofagaceae is revised. We present a new phylogenetic analysis of morphological characters and map these characters onto a recently published phylogenetic tree obtained from DNA sequence data. Results of these and previous analyses strongly support the monophyly of four clades of Nothofagaceae that are currently treated as subgenera of Nothofagus. The four clades of Nothofagaceae are robust and well-supported, with deep stem divergences, have evolutionary equivalence with other genera of Fagales, and can be circumscribed with morphological characters. We argue that these morphological and molecular differences are sufficient for the four clades of Nothofagaceae to be recognised at the primary rank of genus, and that this classification will be more informative and efficient than the currently circumscribed Nothofagus with four subgenera.        Nothofagus is recircumscribed to include five species from southern South America, Lophozonia and Trisyngyne are reinstated, and the new genus Fuscospora is described. Fuscospora and Lophozonia, with six and seven species respectively, occur in New Zealand, southern South America and Australia. Trisyngyne comprises 25 species from New Caledonia, Papua New Guinea and Indonesia. New combinations are provided where necessary in each of these genera.

Description of Almafuerte, a new genus of ground spiders from South America (Araneae, Gnaphosidae)

Zootaxa ◽  
2017 ◽  
Vol 4338 (2) ◽  
pp. 263 ◽  
Author(s):  
CRISTIAN J. GRISMADO ◽  
NICOLÁS LÓPEZ CARRIÓN
Keyword(s):  
South America ◽  
New Taxa ◽  
Type Species ◽  
New Genus ◽  
Santa Fe ◽  
Southern South America ◽  
Central Argentina ◽  
First Time

A new genus of gnaphosid spiders, Almafuerte, gen. nov., is described for seven species from Southern South America. The new genus is diagnosed by a conspicuous retrolateral tegular projection on the male palp, and by having three teeth on the cheliceral retromargin. It comprises six species from Argentina, A. peripampasica sp. nov. (type species), from Central Argentina, also present in Uruguay, A. kuru sp. nov., from Santiago del Estero, A. vigorosa sp. nov., from Corrientes, A. goloboffi sp. nov., from Salta and Jujuy, A. remota sp. nov., from Santiago del Estero and Mendoza, and A. giaii (Gerschman & Schiapelli) comb. nov., here transferred from Echemus, from Santa Fe (the female is here described by the first time); and one species from Bolivia, A. facon sp. nov., from Cochabamba. Hypotheses of relationships of the new taxa are briefly discussed, in the context of the previously proposed groupings: the subfamilies Echeminae and Drassodinae (sensu Platnick 1990) and the “Echemus group” (sensu Murphy 2007). 

The genus Acellomyia González, a new taxonomic arrangement of its species and descriptions of a new genus and two new species from southern South America (Diptera: Tabanidae: Diachlorini)

Zootaxa ◽  
2017 ◽  
Vol 4337 (4) ◽  
pp. 523
Author(s):  
CHRISTIAN R. GONZÁLEZ
Keyword(s):  
Species Richness ◽  
New Species ◽  
South America ◽  
New Genus ◽  
Morphological Diversity ◽  
Southern Chile ◽  
Key To Species ◽  
Southern South America ◽  
Two New Species ◽  
Morphological Differences

The tabanid tribe Diachlorini (Diptera) is the most genus-rich tribe in the Tabanidae; the tribe is cosmopolitan, but the greatest species richness and morphological diversity are found in the Australasian and Neotropical Regions. A new arrangement for the species of Acellomyia González is given; Acellomyia lauta (Hine) is transferred to a new genus, Montismyia gen.n., based on its morphological differences from Acellomyia and geographical distribution. The morphological differences between Acellomyia and Montismyia gen. n. are discussed. Two new species, Acellomyia casablanca sp.n. and Acellomyia puyehue sp.n., are described from specimens collected in southern Chile. Comparison of the morphology of Acellomyia paulseni mapuche (Coscarón & Philip) stat.nov. indicate that they should be elevated to species rank. A key to species of Acellomyia is provided and diagnostic characters are illustrated. 

Paralonchothrix gen. nov., the first record of Echimyini (Rodentia, Octodontoidea) in the late Miocene of Southern South America

2021 ◽  
pp. 1-12
Author(s):  
Pedro PIÑERO ◽  
A. Itatí OLIVARES ◽  
Diego H. VERZI ◽  
Victor H. CONTRERAS
Keyword(s):  
South America ◽  
Late Miocene ◽  
New Genus ◽  
Sister Group ◽  
First Record ◽  
Northwestern Argentina ◽  
Southern South America ◽  
Evolutionary Pattern ◽  
Minimum Age ◽  
First Time

ABSTRACT Echimyidae is the most widely diversified family among hystricognath rodents, both in the number of species and variety of lifestyles. In the Patagonian Subregion of southern South America, extinct echimyids related to living arboreal species (Echimyini) are recorded up to the middle Miocene, whereas all the known southern fossils since the late Miocene are linked to terrestrial and fossorial lineages currently inhabiting the Chacoan open biome in eastern South America. In this work, we describe a new genus of echimyid rodent, Paralonchothrix gen. nov., from the late Miocene of northwestern Argentina and western Brazil. Its single recognised species, Paralonchothrix ponderosus comb. nov., is represented by two hemimandibles. One of them comes from a level of Loma de Las Tapias Formation, underlying a tuff dated at 7.0 ± 0.9 Ma (Huayquerian age, late Miocene); the other specimen comes from the ‘Araucanense’ of Valle de Santa María (type locality, Huayquerian age, late Miocene). A phylogenetic analysis linked Paralonchothrix to Lonchothrix, both being the sister group to Mesomys. Thereby, for the first time, an echimyid linked to living Amazonian arboreal clades is recognised for the late Miocene of southern South America. Paralonchothrix gen. nov. thus represents an exceptional record that raises the need to review the postulated evolutionary pattern for echimyids recorded at high latitudes since the late Miocene. The new genus provides a minimum age (ca.7 Ma) in the fossil record for the divergence between Mesomys and Lonchothrix. The palaeoenvironmental conditions inferred for the late Miocene in western and northwestern Argentina suggest savanna-type environments, with areas with more closed woodlands in peri-Andean valleys. The record of Paralonchothrix gen. nov. supports the hypothesis that this area would have maintained connections with tropical biomes of northern South America during the late Miocene.

Chusqueaspis Amouroux, gen. nov., a new genus of armoured scale insects (Hemiptera: Diaspididae) on bamboos in southern South America

2020 ◽  
Vol 59 (4) ◽  
pp. 731-746
Author(s):  
Paul Amouroux ◽  
Jiufeng Wei ◽  
Lucía E Claps ◽  
Roxanna D Normark ◽  
Benjamin B Normark
Keyword(s):  
South America ◽  
New Genus ◽  
Scale Insects ◽  
Southern South America ◽  
Armoured Scale Insects

Notocynodontium parvulum, a new genus and species of the Rhabdoweisiaceae (Bryophyta: Dicranidae) from southern South America

2020 ◽  
Vol 150 ◽  
pp. 97-108
Author(s):  
Juan Larraín ◽  
Guillermo M. Suárez ◽  
John C. Brinda ◽  
Ray Tangney ◽  
Matt von Konrat ◽  
...  
Keyword(s):  
South America ◽  
New Genus ◽  
New Genus And Species ◽  
Southern South America

Rediscovery of the holotype of Horvathinia lenti De Carlo, 1958, new junior synonym of H. pelocoroides Montadon, 1911 (Insecta: Hemiptera: Belostomatidae)

Zootaxa ◽  
2020 ◽  
Vol 4750 (2) ◽  
pp. 298-300
Author(s):  
CLAUDIA L. RODRIGUES ◽  
RAFAEL B. BRAGA ◽  
FELIPE F. F. MOREIRA
Keyword(s):  
South America ◽  
New Genus ◽  
Rio Grande ◽  
Junior Synonym ◽  
The Other ◽  
Single Specimen ◽  
Rio Grande Do Sul ◽  
New Genus And Species ◽  
Additional Species ◽  
Southern South America

Horvathinia pelocoroides Montandon, 1911 was described as a new genus and species based on two specimens collected in Brazil, one from Minas Gerais deposited in the Naturhistoriska Riksmuseet (Stockholm) and the other from Rio Grande do Sul deposited in the Magyar Természettudományi Múzeum (Budapest) (Montandon 1911). Subsequently, nine additional species were described based on a single specimen each, collected at different localities in southern South America: H. doellojuradoi De Carlo, 1930; H. pelleranoi De Carlo, 1930; H. castilloi De Carlo, 1938; H. meyeri De Carlo, 1938; H. bollei De Carlo, 1958; H. lenti De Carlo, 1958; H. schubarti De Carlo, 1958; H. forsteri Lauck, 1958; and H. argemii Schnack, 1972 (Schnack & Estévez 2005). 

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