scholarly journals HEMIPTERA FROM MUSKOKA LAKE DISTRICT

1889 ◽  
Vol 21 (1) ◽  
pp. 1-11 ◽  
Author(s):  
E. P. Van Duzee
Keyword(s):  
Geographical Distribution ◽  
North American ◽  
Lake District ◽  
The North

This list is presented as a slight contribution to our knowledge of the geographical distribution of the North American Hemiptera. As our literature of this order is by no means overburdened with faunal lists, I trust that the present will find sufficient excuse for its appearance in the mater it contains. I have made every effort to have the list as accurate and complete as possible, under the circumstances. The material was accumulated during brief collecting tour in the Muskoka Lake District of Canada, in the interval from July 25th of August 3rd, 1888.

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.

BIOLOGICAL CHARACTER ANALYSIS, CLASSIFICATION, AND HISTORY OF THE NORTH AMERICAN CICINDELA SPLENDIDA HENTZ GROUP TAXA (COLEOPTERA: CICINDELIDAE)

1991 ◽  
Vol 123 (6) ◽  
pp. 1327-1353 ◽  
Author(s):  
Larry Aldo Schincariol ◽  
Richard Freitag
Keyword(s):  
Geographical Distribution ◽  
North American ◽  
Soil Types ◽  
The North ◽  
Species Overlap ◽  
Dominant Soil ◽  
Central United States ◽  
American Resident ◽  
History Of ◽  
Peak Abundance

AbstractComparisons of selected biological attributes were made to establish a phylogenetic basis for the classification of the Cicindela splendida Hentz group taxa. Recognized members of the group, C. splendida, C. limbalis Klug, and C. denverensis Casey, are spring-fall species, and northern populations emerge later during spring than southern populations. Despite differences in time of peak abundance, the three species overlap in time and space. The absence of large numbers of hybrids of these three species suggests that although closely related, their adults can distinguish from each other, and thus their rank as species should be retained.Comparison of geographical distribution of these species with that of dominant soil types revealed that they had similar soil preferences. The geographical distribution of all three species was smaller than the range of their preferred soil types, probably because of the same factors that influence their local distributions.Morphometric analyses of these species revealed a closer similarity between C. splendida and C. limbalis. In both sexes elytral pattern, percentage maculation, elytral colour, and non-sensory setae number collectively distinguish these species from each other, whereas body measurements, body ratios, sensory setae, and labral setae collectively fail to distinguish them.Based on plesiomorph/apomorph character polarization, and the C. purpurea Olivier group as outgroup, it was determined that C. denverensis represents an early lineage of the C. splendida group, whereas C. splendida and C. limbalis are more recent sister species.The ancestor of the C. splendida group probably evolved during late stages of the Tertiary Period as a North American resident and was a continental, riparian, cool-temperate form that ranged across Canada and northeastern and central United States. Extant forms speciated during the late Pleistocene as a result of spatial fragmentation of populations, isolation, and adaptation during glacial and interglacial periods.

THE GEOGRAPHICAL DISTRIBUTION OF THE GENUS GYMNOSPORANGIUM

1940 ◽  
Vol 18c (9) ◽  
pp. 469-488 ◽  
Author(s):  
Ivan H. Crowell
Keyword(s):  
North America ◽  
Geographical Distribution ◽  
Northern Hemisphere ◽  
North American ◽  
North American Species ◽  
Alternate Host ◽  
Alternate Hosts ◽  
Host Group ◽  
The North

This study of geographical distribution shows that species of the genus Gymnosporangium are found in the northern hemisphere only and occur most abundantly in the temperate portion. Each of the three major continents contains a distinctive Gymnosporangium flora and, with the exception of three species called the "tricontinental species", species occur naturally in one continent only. The genus contains about 48 species; 33 occur in North America, 15 in Asia and 6 in Europe (including the three tricontinental species in each case). Explanations of the types of geographical distribution of the North American species are given under four categories: (i) species that occupy all potential territory covered by the coincident ranges of their alternate hosts, (ii) species that are confined by the range of their "primary" telial host, (iii) localized species that are confined within a portion of the coincident ranges of their alternate host, and (iv) widely distributed species that are not limited in their range by either alternate host group.

The Iapetus suture in the British Isles

1989 ◽  
Vol 126 (1) ◽  
pp. 1-8 ◽  
Author(s):  
W. S. McKerrow ◽  
N. J. Soper
Keyword(s):  
Continental Crust ◽  
North American ◽  
Seismic Reflection ◽  
Plate Boundary ◽  
Surface Expression ◽  
Lake District ◽  
North West ◽  
The North ◽  
Iapetus Ocean ◽  
Seismic Reflection Profiling

AbstractThe position of the Iapetus Ocean suture can be traced between Ordovician fossil localities in the Southern Uplands and the Lake District which contain, respectively, distinct North American and European faunas. The Southern Uplands contains North American Caradoc faunas in the Northern Belt, and is considered to have been accreted onto the Laurentian (North American) margin between the Llandeilo and the end of the Wenlock. Deep seismic reflection profiling shows that a surface, probably parallel to the suture zone, dips down to the northwest from the Solway Line. In eastern Ireland, the surface trace of the suture coincides with the Navan Fault, which separates the Longford-Down massif from Ordovician sediments containing European faunas. The Navan–Silvermines Fault may represent the surface expression of the suture, but it is masked by Wenlock turbidites, which appear to have crossed over the plate boundary. Northward subduction of continental crust below the margin of Laurentia during the late Silurian may explain the influx of turbidite fans from the north or north west onto depressed crust to the south of the suture. Termination of subduction coincides with the widespread Acadian Orogeny in the Emsian (at 395±5 Ma).

Gibellina cerealis. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
C. Booth
Keyword(s):  
Rhizoctonia Solani ◽  
Geographical Distribution ◽  
North American ◽  
Crop Residues ◽  
Stem Rot ◽  
Foot Rot ◽  
Pseudocercosporella Herpotrichoides ◽  
Basal Stem Rot ◽  
The North ◽  
Sharp Eyespot

Abstract A description is provided for Gibellina cerealis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Gramineae, especially Triticum. DISEASE: White foot rot or basal stem rot of wheat often associated with Rhizoctonia solani (49, 2428; 51, 2349); the disease may be confused with sharp eyespot of wheat caused by Pseudocercosporella herpotrichoides (48, 2903). GEOGRAPHICAL DISTRIBUTION: Asia, Europe (Bulgaria, Hungary, Italy, Rumania, UK); the North American (Oregon) record is probably incorrect (16, 801). TRANSMISSION: By air-borne ascospores from diseased crop residues (37, 156).

ON THE GEOGRAPHICAL DISTRIBUTION OF NORTH AMERICAN LEPIDOPTERA

1886 ◽  
Vol 18 (10) ◽  
pp. 197-200
Author(s):  
Aug. R. Grote
Keyword(s):  
Geographical Distribution ◽  
North American ◽  
Related Species ◽  
New World ◽  
Great Range ◽  
The Real ◽  
Common Descent ◽  
Number Of Species ◽  
The North ◽  
Representative Species

The study of the forms referable to the first or European element in the North American Moths, is complicated by the circumstance of the great range in the character and amount of the differences separating the related species now living so widely apart. These related species are found, in fact, to offer also difficulties as to their correct nomenclature. We have seen that the term “representative species,” like that of “prophetic types,” hides the real significance of the inter-resemblance which is that of a common descent. In naming these “representative” forms we must be guided by the rule that where the differences are such that the species would be considered distinct if members of a common fauna, a different specific title must be given them, but where these differences are slight, and what, under the same supposition, would be considered only varietal, the species must be considered as still identical, though separated so long in time and by so wide a space. The study of those forms which are practically identical is, as we have seen, further complicated by the difficulty of deciding as to whether they may have been introduced since the discovery of the New World by the Spaniards, or whether the species have continued unaltered since the Tertiary in both America and Europe. While certain species such as Scoliopteryx are undoubtedly in this latter case, it is less easy to feel so sure with regard to this in instances like Dipterygia Pinastri and the various identical forms of Agrotis, but on the whole I am inclined to believe that the number of species artificially exchanged is very small, and that these identical species have simply proved more constant and are of an older type than the rest.

1588: The Bicalutamide Early Prostate Cancer Program: Findings of the North American Trial at 7.7 Years' Median Follow-Up

2006 ◽  
Vol 175 (4S) ◽  
pp. 511-512
Author(s):  
David G. McLeod ◽  
Ira Klimberg ◽  
Donald Gleason ◽  
Gerald Chodak ◽  
Thomas Morris ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
North American ◽  
Early Prostate Cancer ◽  
The North ◽  
Cancer Program
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