SUSCEPTIBILITY OF ARGENTINE MELANOPLINES (ORTHOPTERA: ACRIDIDAE) TO ENTOMOPOXVIRUSES (ENTOMOPOXVIRINAE) FROM NORTH AMERICAN AND AFRICAN GRASSHOPPERS

1993 ◽  
Vol 125 (6) ◽  
pp. 1127-1129 ◽  
Author(s):  
C.E. Lange ◽  
D.A. Streett
Keyword(s):  
North American ◽  
South American ◽  
Pest Species ◽  
The South ◽  
Land Bridge ◽  
Important Species ◽  
Different Parts

Grasshoppers are responsible for considerable agricultural losses in different parts of Argentina (C.O.P.R. 1982). Most of the pest species in Argentina belong to the subfamily Melanoplinae. It is generally accepted that South American melanoplines are derived from a nearctic stock that crossed the Panamanian land bridge (Carbonell 1977). The genus Dichroplus Stål is one of the largest genera within the South American Melanoplinae (Ronderos and Cigliano 1990). Dichroplus contains several economically important species and is believed to be closely related to the nearctic genus Melanoplus Stål (Vickery 1989).

ON THE GEOGRAPHICAL DISTRIBUTION OF NORTH AMERICAN LEPIDOPTERA

1886 ◽  
Vol 18 (11) ◽  
pp. 213-220
Author(s):  
Aug. R. Grote
Keyword(s):  
Geographical Distribution ◽  
North American ◽  
North American Species ◽  
South American ◽  
Seasonal Temperature ◽  
The South ◽  
Old World ◽  
The North

Again, the genera Citheronia and Eacles are a South American element in our fauna, while the typical Attacinæ, such as Actias, probably belong to the Old World element in our fauna, together with all our Platypteryginœ. Among the Hawk Moths the genera Philampelus and Phlegethontius are of probable South American extraction, though represented now by certain strictly North American species. Mr. Robert Bunker, writing from Rochester, N. Y., records the fact that Philampelus Pandorus, going into chrysaiis Augnst 1, came out Sept. 10 as a moth, showing that in a warmer climate the species would become doublebrooded. And this is undoubtedly the case with many species the farther we go South, where insect activities are not interrupted so long and so strictly by the cold of winter. Since the continuance of the pupal condition is influenced by cold, a diminishing seasonal temperature for ages may have originally affected, if not induced, the transformations of insects as a whole. Butterflies and Moths which are single brooded in the North become double brooded in the South.

Ecogeography and the Great American Interchange

Paleobiology ◽  
1991 ◽  
Vol 17 (3) ◽  
pp. 266-280 ◽  
Author(s):  
S. David Webb
Keyword(s):  
North America ◽  
South America ◽  
North American ◽  
Mammalian Fauna ◽  
The South ◽  
Land Bridge ◽  
Southern Mexico ◽  
The North ◽  
Land Mammal ◽  
The Impact

When the isthmian land bridge triggered the Great American Interchange, a large majority of land-mammal families crossed reciprocally between North and South America at about 2.5 Ma (i.e., Late Pliocene). Initially land-mammal dynamics proceeded as predicted by equilibrium theory, with roughly equal reciprocal mingling on both continents. Also as predicted, the impact of the interchange faded in North America after about 1 m.y. In South America, contrary to such predictions, the interchange became decidedly unbalanced: during the Pleistocene, groups of North American origin continued to diversify at exponential rates. Whereas only about 10% of North American genera are derived from southern immigrants, more than half of the modern mammalian fauna of South America, measured at the generic level, stems from northern immigrants. In addition, extinctions more severely decimated interchange taxa in North America, where six families were lost, than in South America, where only two immigrant families became extinct.This paper presents a two-phase ecogeographic model to explain the asymmetrical results of the land-mammal interchange. During the humid interglacial phase, the tropics were dominated by rain forests, and the principal biotic movement was from Amazonia to Central America and southern Mexico. During the more arid glacial phase, savanna habitats extended broadly right through tropical latitudes. Because the source area in the temperate north was six times as large as that in the south, immigrants from the north outnumbered those from the south. One prediction of this hypothesis is that immigrants from the north generally should reach higher latitudes in South America than the opposing contingent of land-mammal taxa in North America. Another prediction is that successful interchange families from the north should experience much of their phylogenetic diversification in low latitudes of North America before the interchange. Insofar as these predictions can be tested, they appear to be upheld.

A NEW WATER-BUG FROM CANADA

1897 ◽  
Vol 29 (3) ◽  
pp. 56-56
Author(s):  
William H. Ashmead
Keyword(s):  
New Species ◽  
Fresh Water ◽  
North American ◽  
South American ◽  
The South ◽  
Water Stream ◽  
The North ◽  
Water Species

The interesting new species of water-bug described below was received some time ago from Abbé P. A. Bégin, of Sherbrooke, Canada. It was captured swimming on a fresh-water stream some little distance above Sherbrooke, and is of more than ordinary interest, from the fact that it belongs to the genus Halobatopsis, Bianchi, a genus not yet recognized in the North American fauna, and only recently characterized, being based upon the South American Halobates platensis, Berg., also a fresh-water species.

scholarly journals Editorial

Collectivus ◽  
2017 ◽  
Vol 4 (2) ◽  
pp. 6-10
Author(s):  
Adriano Díez Jiménez ◽  
Adriana Consuegra Ascanio
Keyword(s):  
Latin America ◽  
Social Reality ◽  
Southern Cone ◽  
South American ◽  
The South ◽  
Social Phenomena ◽  
Panoramic Vision ◽  
The Social ◽  
America Latina ◽  
Different Parts

Este nuevo número de la revista Collectivus, presenta una gran diversidad en los temas abordados en cada uno de los artículos trabajados por autores desde distintas partes del Cono Sur, de modo que, el volumen 4, número 2 ofrece una visión panorámica en la comprensión de los contextos y fenómenos sociales que confluyen en el escenario sudamericano, acompañada de un ejercicio reflexivo profundo y pertinente acerca de la realidad social en América Latina. AbstractThis new issue of the magazine Collectivus, presents a great diversity in the topics addressed in each of the articles worked by authors from different parts of the Southern Cone, so that, volume 4, number 2 offers a panoramic vision in the understanding of the contexts and social phenomena that converge in the South American scenario, accompanied by a deep and pertinent reflective exercise about the social reality in Latin America. 

The North American Species of Diathrausta Lederer (Lepidoptera: Pyralidae)

1956 ◽  
Vol 88 (10) ◽  
pp. 579-583
Author(s):  
Eugene Munroe
Keyword(s):  
North American ◽  
North American Species ◽  
South American ◽  
The South ◽  
The North ◽  
Geographical Race ◽  
Geographic Race ◽  
Lepidoptera Pyralidae

Dyar (1913) listed Diathrausta reconditalis (Walker) as a “form” of the South American D. nerinalis (Walker) and described as new the “form” harlequinalis from Arizona. From the context it is evident that in that paper Dyar used “form” as equivalent to geographic race, and the form names he proposed there can accordingly be treated as valid trinomina. Haimbach (1915), apparently in ignorance of Dyar's paper, described Diathrausta montana from Colorado. This was sunk by Barnes and McDunnough (1917) as a synonym of harlequinalis. Barnes and McDunnough listed harlequinalis as a geographical race of reconditalis, but did not follow Dyar in uniting these with nerinalis.

LIVER PATHOLOGY IN CHILDREN WITH AIDS: A COMPARISON BETWEEN THE SOUTH AMERICAN AND NORTH AMERICAN POPULATION

2002 ◽  
Vol 21 (1) ◽  
pp. 79-87
Author(s):  
R. A. Morotti ◽  
M. Tata ◽  
R. Drut ◽  
S. Siminovich ◽  
D. Menezes ◽  
...  
Keyword(s):  
North American ◽  
North American Population ◽  
South American ◽  
Liver Pathology ◽  
American Population ◽  
The South
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