scholarly journals Genetic diversity in the Andes: variation within and between the South American species of Oreobolus R. Br. (Cyperaceae)

Alpine Botany ◽  
2017 ◽  
Vol 127 (2) ◽  
pp. 155-170 ◽  
Author(s):  
María Camila Gómez-Gutiérrez ◽  
R. Toby Pennington ◽  
Linda E. Neaves ◽  
Richard I. Milne ◽  
Santiago Madriñán ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
South American ◽  
The South ◽  
South American Species ◽  
The Andes

scholarly journals Revision of the bee genus Chlerogella (Hymenoptera: Halictidae), Part IV: A new species from southwestern Colombia

2014 ◽  
pp. 1
Author(s):  
Michael S. Engel ◽  
Victor H. Gonzalez ◽  
Ismael A. Hinojosa-Díaz
Keyword(s):  
New Species ◽  
South American ◽  
The South ◽  
South American Species ◽  
The Andes ◽  
A New Species

A new species of the diverse augochlorine bee genus Chlerogella Michener (Halictinae: Augochlorini) is described and figured from southwestern Colombia.  Chlerogella anchicaya Engel, Gonzalez, & Hinojosa-Díaz, new species, is similar to C. agaylei Engel and C. materdonnae Engel, both occurring on the eastern slopes of the Andes in Ecuador.  There are also some similarities with C. eumorpha Engel from the western Andean foothills in northern Ecuador, but differences in rostral length and male terminalia can distinguish these species.  Revised couplets are provided to the South American species of Chlerogella to permit identification of the new species.

Cnidochloa: A New Genus of Grasses from Brazil (Poaceae: Panicoideae: Paniceae)

2020 ◽  
Vol 105 (2) ◽  
pp. 183-194
Author(s):  
Fernando O. Zuloaga ◽  
Sandra S. Aliscioni ◽  
M. Amalia Scataglini
Keyword(s):  
New Genus ◽  
Phylogenetic Position ◽  
South American ◽  
The South ◽  
South American Species ◽  
Molecular Characters

Generic boundaries of the South American species Panicum longipedicellatum Swallen are explored and compared with allied genera of the tribe Paniceae. On the basis of morphological, anatomical, and molecular characters a new genus, Cnidochloa Zuloaga, is proposed. The phylogenetic position of the new genus within the Paniceae is evaluated.

Darwin wasps of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) of Mexico: genera Apechthis Förster, Itoplectis Förster and Pimpla Fabricius

Zootaxa ◽  
2021 ◽  
Vol 5071 (4) ◽  
pp. 451-491
Author(s):  
ANDREY I. KHALAIM ◽  
ENRIQUE RUÍZ-CANCINO
Keyword(s):  
Junior Synonym ◽  
South American ◽  
The South ◽  
South American Species ◽  
Identification Keys ◽  
First Time ◽  
Mexican Species

Mexican species of three pimpline genera, Apechthis Förster (one  species), Itoplectis Förster (six species) and Pimpla Fabricius (20 species, including one unidentified taxon), are reviewed. Four species of Pimpla are described as new to science: P. chamela sp. nov., P. oaxacana sp. nov., P. tequila sp. nov. and P. xalapana sp. nov. Pimpla thoracica Morley, 1914 is found to be a junior synonym of P. ellopiae Harrington, 1892 (syn. nov.). Apechthis zapoteca (Cresson) is recorded for the first time from Venezuela, Pimpla dimidiata (Townes) from Mexico, P. caeruleata Cresson, P. croceiventris (Cresson), P. sanguinipes Cresson and P. sumichrasti Cresson from Honduras, P. ichneumoniformis Cresson and P. viridescens Morley from Guatemala and Honduras, and P. punicipes Cresson from Panama. The South American species Pimpla caerulea Brullé and the Nearctic species P. pedalis Cresson are excluded from the Mexican fauna. Male of Itoplectis mexicana and female of Pimpla dimidiata are recorded for the first time. Identification keys to the species of Itoplectis and Pimpla occurring in Mexico are provided.  

scholarly journals On the Pleistocene Snow-Line Depression in the Arid Regions of the South American Andes

1971 ◽  
Vol 10 (59) ◽  
pp. 255-267
Author(s):  
Stefan L. Hastenrath
Keyword(s):  
Arid Regions ◽  
South American ◽  
The South ◽  
Temperate Latitude ◽  
The Andes ◽  
Western Cordillera ◽  
Snow Line ◽  
The Pacific ◽  
The Arid Regions ◽  
June July

AbstractField observations during a journey through the arid regions of the South American Andes in June-July 1969 are evaluated in conjunction with available air photographs and reports from adjacent regions of the High Andes. Results indicate an increase of the Pleistocene snow-line depression in the western Cordillera from about 700 m at lat. 12° S. to more than 1 500 m at lat. 30° S. The Pleistocene snow-line depression decreases from the Pacific to the Atlantic side of the Andes, but particularly strongly so on the poleward fringe of the arid region. From this geomorphic evidence it is suggested that the atmospheric circulation during the glacial period was characterized by an Equatorward displacement of the boundary between tropical easterlies and temperate-latitude westerlies.

Systematic revision of Calligrapha s. str. Chevrolat (Coleoptera: Chrysomelidae, Chrysomelinae)

Zootaxa ◽  
2021 ◽  
Vol 4953 (1) ◽  
pp. 1-111
Author(s):  
JESÚS GÓMEZ-ZURITA
Keyword(s):  
Leaf Beetle ◽  
South American ◽  
The South ◽  
South American Species ◽  
Systematic Revision ◽  
Generic Type ◽  
The Status ◽  
Taxonomic Changes ◽  
Current Species

In this work, the Chrysomelinae leaf beetle subgenus Calligrapha s. str. Chevrolat, 1836 is revised, offering redescriptions and keys for identification of twelve species currently considered in this group, allied to the South American species Calligrapha polyspila (Germar, 1821), the generic type of Calligrapha. The current species count results from important taxonomic changes. These include reversing a long-held synonymy, resurrecting the name Calligrapha mexicana Stål, 1859 stat. rev. for a species that is different from Chrysomela serpentina Rogers, 1856; upgrading the status of Polyspila serpentina var. discrepans Achard, 1923 to Calligrapha discrepans (Achard) stat. rev.; and formally proposing a number of new synonymies for several species, including: (1) Calligrapha discrepans (Achard) (= Calligrapha serpentina ssp. temaxensis Bechyné, 1952 syn. nov.); (2) Calligrapha fulvipes (Gistel, 1848) (= Calligrapha bajula Stål, 1860 syn. nov.; = Calligrapha nupta Stål, 1859 syn. nov.; = C. sponsa Stål, 1859 syn. nov.); and (3) Calligrapha polyspila (Germar) (= Polyspila polyspila var. bilineolata Achard, 1923 syn. nov.; = Polyspila polyspila var. plagata Achard, 1923 syn. nov.). 

Comparative anatomy of the gut of the South American species of Amitermes, with description of two new species and an identification key based on soldiers and workers

Zootaxa ◽  
2020 ◽  
Vol 4751 (1) ◽  
pp. 75-104
Author(s):  
MAURICIO M. ROCHA ◽  
ELIANA M. CANCELLO
Keyword(s):  
New Species ◽  
South America ◽  
Geographic Distribution ◽  
Comparative Anatomy ◽  
Distribution Patterns ◽  
South American ◽  
The South ◽  
South American Species ◽  
Two New Species ◽  
First Time

In this contribution we present updates on the taxonomy and morphology of the South American species of Amitermes. Two new species are described: Amitermes bandeirai, sp. n., from Brazil, and Amitermes lilloi, sp. n., from Argentina. Amitermes nordestinus is a junior synonym of Amitermes aporema. The imago of A. aporema is described for the first time. Detailed comparative gut anatomy of the eight species is presented for the first time. The geographic distribution of Amitermes in South America is expanded and the distribution patterns of some species are discussed. 

scholarly journals Svastra maculata sp. n. e notas sobre as espécies sul-americanas de Svastra Holmberg (Hymenoptera, Anthophoridae)

1998 ◽  
Vol 27 ◽  
Author(s):  
Danúncia Urban
Keyword(s):  
Junior Synonym ◽  
South American ◽  
The South ◽  
South American Species

São estudadas as espécies de Svastra Holmberg, da América do Sul: é descrita Svastra maculata sp. n., da Argentina; Svastra bombilans Holmberg, 1884 é considerada sinônimo únior de Svastra flavitarsis (Spinola, 1851); Svastra detecta Holmberg, 1884, permanece como boa espécie. ABSTRACT The South American species of the Neotropical genus Svastra are studied. Svastra maculata sp.n. from Argentina is described; Svastra bombilans (Holmberg, 1884 is considered junior synonym of Svastra latitarsis (Spinola, 1851) and Svastra detecta Holmberg, 1884 remains as a good species. RÉSUMÉ Les espêces du genre Svastra du Chile et de l'Argentina sont étudiés. Svastra maculata sp. n. est décrit. Svastra bombilans Holmberg, 1884. est considéré comme synonyme jeune de Svastra flavitarsis (Spinola, 185 1) et Svastra detecta Holmberg, 1884, une bonne espéce.

Studies in Pseudocyphellaria (Lichens). III. The South American Species

1993 ◽  
Vol 96 (1) ◽  
pp. 178
Author(s):  
John J. Engel ◽  
D. J. Galloway
Keyword(s):  
South American ◽  
The South ◽  
South American Species

scholarly journals Analysis of Hantavirus Genetic Diversity in Argentina: S Segment-Derived Phylogeny

2002 ◽  
Vol 76 (8) ◽  
pp. 3765-3773 ◽  
Author(s):  
Marlene C. Bohlman ◽  
Sergey P. Morzunov ◽  
John Meissner ◽  
Mary Beth Taylor ◽  
Kimiko Ishibashi ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Dominant Factor ◽  
South American ◽  
Protein Amino Acid ◽  
The Andes ◽  
Andes Virus ◽  
Virus Genotypes ◽  
The Common ◽  
High Level ◽  
Virus Strains

ABSTRACT Nucleotide sequences were determined for the complete S genome segments of the six distinct hantavirus genotypes from Argentina and for two cell culture-isolated Andes virus strains from Chile. Phylogenetic analysis indicates that, although divergent from each other, all Argentinian hantavirus genotypes group together and form a novel phylogenetic clade with the Andes virus. The previously characterized South American hantaviruses Laguna Negra virus and Rio Mamore virus make up another clade that originates from the same ancestral node as the Argentinian/Chilean viruses. Within the clade of Argentinian/Chilean viruses, three subclades can be defined, although the branching order is somewhat obscure. These are made of (i) “Lechiguanas-like” virus genotypes, (ii) Maciel virus and Pergamino virus genotypes, and (iii) strains of the Andes virus. Two hantavirus genotypes from Brazil, Araraquara and Castello dos Sonhos, were found to group with Maciel virus and Andes virus, respectively. The nucleocapsid protein amino acid sequence variability among the members of the Argentinian/Chilean clade does not exceed 5.8%. It is especially low (3.5%) among oryzomyine species-associated virus genotypes, suggesting recent divergence from the common ancestor. Interestingly, the Maciel and Pergamino viruses fit well with the rest of the clade although their hosts are akodontine rodents. Taken together, these data suggest that under conditions in which potential hosts display a high level of genetic diversity and are sympatric, host switching may play a prominent role in establishing hantavirus genetic diversity. However, cospeciation still remains the dominant factor in the evolution of hantaviruses.

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