DISCOVERY OF NEMERITIS HOLMGREN (HYMENOPTERA: ICHNEUMONIDAE) IN EASTERN NORTH AMERICA

1990 ◽  
Vol 122 (6) ◽  
pp. 1267-1268
Author(s):  
P.M. Sanborne
Keyword(s):  
North America ◽  
Research Centre ◽  
Eastern North America ◽  
The West ◽  
European Species ◽  
Established Species ◽  
Insect Collection

In 1983, while sorting Campopleginae in the Canadian National Insect Collection, Biosystematics Research Centre, Ottawa, Ont., I discovered two females of a species of Nemeritis Holmgren. In North America this genus was previously known only from the west (Townes 1970) so it was surprising to see specimens collected in Maine (Sherman Mills, 24.VI–4.VII.1973, G. Heinrich). A survey of the genus showed that these specimens are indistinguishable from the European species N. lativentris Thompson. It is impossible to determine whether or not this is a recently established species as I have been unable to locate more specimens.

A comparison of earthquake damage areas as a function of magnitude across the United States

1993 ◽  
Vol 83 (4) ◽  
pp. 1064-1080 ◽  
Author(s):  
G. A. Bollinger ◽  
M. C. Chapman ◽  
M. S. Sibol
Keyword(s):  
United States ◽  
North America ◽  
Ground Motion ◽  
Epicentral Distance ◽  
The United States ◽  
Western United States ◽  
Eastern North America ◽  
Similar Response ◽  
Eastern United States ◽  
The West

Abstract This study investigates the relationship between earthquake magnitude and the size of damage areas in the eastern and western United States. To quantify damage area as a function of moment magnitude (M), 149 MMI VI and VII areas for 109 earthquakes (88 in the western United States, 21 in the eastern United States and Canada) were measured. Regression of isoseismal areas versus M indicated that areas in the East were larger than those in the West, at both intensity levels, by an average 5 × in the M 4.5 to 7.5 range. In terms of radii for circles of equivalent area, these results indicate that damaging ground motion from shocks of the same magnitude extend 2 × the epicentral distance in eastern North America compared to the West. To determine source and site parameters consistent with the above results, response spectral levels for eastern North America were stochastically simulated and compared with response spectral ordinates derived from recorded strong ground motion data in the western United States. Stress-drop values of 200 bars, combined with a surficial 2-km-thick low velocity “sedimentary” layer over rock basement, produced results that are compatible with the intensity observations, i.e., similar response spectral levels in the east at approximately twice their epicentral distance in the western U.S. distance. These results suggest that ground motion modeling in eastern North America may need to incorporate source and site parameters different from those presently in general use. The results are also of importance to eastern U.S. hazard assessments as they require allowance for the larger damage areas in preparedness and mitigation programs.

NOTES ON SOME FLORIDA COLEOPTERA WITH DESCRIPTIONS OF NEW SPECIES

1928 ◽  
Vol 60 (3) ◽  
pp. 60-73 ◽  
Author(s):  
W. S. Blatchley
Keyword(s):  
New Species ◽  
North America ◽  
West Coast ◽  
The Other ◽  
Eastern North America ◽  
The West ◽  
Southern Florida

My last general paper on Florida Coleoptera was prepared in the autumn of 1924, and appeared in the Canadian Entomologist for July, 1925. Since that was written my time has been largely devoted to the final preparation and publication of the “Heteroptera of Eastern North America.” During the three years which have elapsed I have spent the winters at Dunedin on the west coast of Florida, but have made three additional collecting trips, of three or four weeks each, to Royal Palm Park. One of these was in December, the other two in March and April. This park comprises an area of 4,000 acres lying in extreme southern Florida, about 40 miles northeast of Cape Sable.

The youngest styliolines and nowakiids (Late Devonian) currently known from New York

1986 ◽  
Vol 60 (3) ◽  
pp. 689-700 ◽  
Author(s):  
Ellis L. Yochelson ◽  
William T. Kirchgasser
Keyword(s):  
New York ◽  
North America ◽  
Wall Structure ◽  
Eastern North America ◽  
Late Devonian ◽  
Appalachian Region ◽  
The West ◽  
First Report

This is the first report of styliolines in the Angola Shale Member of the West Falls Formation in western New York. These specimens are of late Frasnian age and are the youngest individuals known from the Appalachian Region. This upward extension of range places the extinction of styliolines in eastern North America more in accord with their time of extinction in Europe. Nowakiids have also been found in the younger Hanover Shale Member, in the upper part of the Java Formation, also of late Frasnian age. These are the youngest known nowakiids from the Appalachians. Within the limits of preservation, the external characters and wall structure of the Angola styliolines are comparable with those of older specimens. The associated rare small annulated nowakiids and homotcenids have a laminated wall structure fundamentally different from that of the styliolines.

Factors affecting variation in the primary song of North American solitary vireos (Aves: Vireonidae)

1981 ◽  
Vol 59 (10) ◽  
pp. 2001-2009 ◽  
Author(s):  
Ross D. James
Keyword(s):  
North America ◽  
North American ◽  
Pure Tone ◽  
Song Learning ◽  
Eastern North America ◽  
The West ◽  
Separate Species ◽  
Factors Affecting ◽  
Gradual Shift ◽  
Species Isolation

Tape recordings of the primary song of eight subspecies of solitary vireo were examined sonagraphically. Within one population all birds sing a small number of song phrases in common but each bird has a slightly different repertoire of additional phrases. Populations closest together share the most phrases, but even among widely separate groups or subspecies a few of the same phrases may be found. Song learning appears to maintain local uniformity of song while, with drift and recombination, providing opportunities for the development of new song phrases. Only in eastern North America are primary song phrases pure in tone with a gradual shift of frequency-modulated phrases in both grayish and yellowish subspecies in the west. The presence of pure tone phrases in eastern North America probably contributes to and is maintained by the need for species isolation from yellow-throated vireos and does not indicate that eastern and western birds may be separate species. Climate and habitat appear to have little influence on song variability among subspecies.

Conversion of Sn to Lg at a continental margin

1975 ◽  
Vol 65 (1) ◽  
pp. 235-244 ◽  
Author(s):  
Bryan L. Isacks ◽  
Christopher Stephens
Keyword(s):  
North America ◽  
Gulf Of Mexico ◽  
Continental Margin ◽  
West Indies ◽  
Wave Train ◽  
Eastern North America ◽  
Substantial Fraction ◽  
The West ◽  
Short Period ◽  
Period Wave

abstract Examination of the seismic phase Sn from earthquakes in the West Indies as recorded by numerous stations in eastern North America reveals that a substantial fraction of the short-period energy carried by Sn across the suboceanic lithosphere of the Atlantic is fed into the continental crust near the continental margin and travels into North America as the crustal phase Lg. As distance within the continent increases, the Lg part of the short-period wave train becomes predominant, and can be identified at stations in northern Canada as far as 58° from the sources. Several estimates of the average Q for the attenuation of Lg in eastern North America agree upon values in the range of 600 to 1,400. Hydrophone recordings at Bermuda indicate an average Q as high as 4,000 for the attenuation of Sn in the suboceanic lithosphere. Conversion of Sn to Lg also appears to occur near the margin between the continental U.S. and the Gulf of Mexico. In this case, Sn travels northward across the Gulf from earthquakes located near the border between Mexico and Guatemala.

Working With Wilmsen: Paleoindian End Scraper Design and use at Nobles Pond

2013 ◽  
Vol 78 (3) ◽  
pp. 407-432 ◽  
Author(s):  
Mark F. Seeman ◽  
Thomas J. Loebel ◽  
Aaron Comstock ◽  
Garry L. Summers
Keyword(s):  
North America ◽  
Tool Design ◽  
Eastern North America ◽  
The West ◽  
Organization Of Work ◽  
Large Sample ◽  
Form And Function ◽  
The Many ◽  
And Function

AbstractThis study is an investigation of tool design and the organization of work. Here we further test Wilmsen’s (1970) conclusion that early Paleoindian tools—specifically, hafted end scrapers—were redesigned to facilitate the processing of a broader range of resources as colonizing populations moved into the forested environments of eastern North America from the west. We use a large sample from the Nobles Pond site, morphometic variables, and high-powered microwear to evaluate the effects of design and reduction as they bear on this generalization. Results do not support Wilmsen’s model, and, more generally, we conclude that an understanding of form and function in reductive technologies comes not only from an appreciation of the planned, stage-like change that is inherent in the design of reliable tools, but also from a consideration of the many contingencies and particular work situations that arise in the lives of mobile foragers.

Ochotona (Lagomorpha) from Late Quaternary Cave Deposits in Eastern North America

1996 ◽  
Vol 45 (1) ◽  
pp. 93-101 ◽  
Author(s):  
Jim I. Mead ◽  
Frederick Grady
Keyword(s):  
North America ◽  
Late Pleistocene ◽  
Late Quaternary ◽  
Ice Sheets ◽  
Late Glacial ◽  
Eastern North America ◽  
Large Species ◽  
The West ◽  
Northeastern North America ◽  
Large Form

AbstractPikas (Ochtona)—small gnawing mammals, related to rabbits—range today throughout parts of the Northern Hemisphere, but had a wider distribution during the Pleistocene. Nine caves from northeastern North America (a region not occupied by pikas today) have Pleistocene deposits containing remains of Ochotona. We examine 526 fossil specimens (ranging in age from approximately 850,000 to 8670 yr B.P.) from five of these caves. Two morphological forms of Ochotona lived in northeastern North America during the late Pleistocene—a large species (probably O. whartoni) and a small species (probably O. princeps).Ochotona of glacial age are not necessarily indicative of talus slopes and mesic communities. O. princeps-like of the Irvingtonian of West Virginia were living with an amphibian-reptilian assemblage found in the area today, implying winters not much, if at all, colder than at present. Late glacial and postglacial change in climate south of the ice sheets in effect would have isolated Ochotona in eastern North America, where they were unable to retreat to the west or north. Whereas western pika had the option of moving up in elevation, into boreal islands, eastern forms became restricted to ever-diminishing habitats, culminating in extinction and extirpation. Radiocarbon ages imply that Ochotona lived in eastern North America during the late Pleistocene (late Rancholabrean) and into the earliest Holocene. We describe the youngest remains of Ochotona in eastern North America and the youngest for the extinct large form, O. whartoni.

The millipede family Striariidae Bollman, 1893: III. Four new species of Striaria Bollman, 1888 (Diplopoda, Chordeumatida, Striariidae) from Idaho, USA

Zootaxa ◽  
2021 ◽  
Vol 4920 (3) ◽  
pp. 395-406
Author(s):  
WILLIAM A. SHEAR
Keyword(s):  
New Species ◽  
North America ◽  
Eastern North America ◽  
Western North America ◽  
Appalachian Region ◽  
The West ◽  
Northern Idaho

The millipede genus Striaria Bollman, 1888 heretofore had been thought to be confined to the Appalachian region of eastern North America, is replaced in western North America by species of the genus Amplaria Chamberlin, 1941. Collections from northern Idaho show that this is not the case, and that at least four species of Striaria occur in the west. These species are described herein as Striaria aculeata n. sp., S. bombillus n. sp., S. vagabundus n. sp. and S. orator n. sp.  

scholarly journals Cortinarius subgenus Leprocybe, unexpected diversity and significant differences in species compositions between western and eastern North America

2021 ◽  
Author(s):  
J. Ammirati ◽  
K. Liimatainen ◽  
D. Bojantchev ◽  
U. Peintner ◽  
R. Kuhnert-Finkernagel ◽  
...  
Keyword(s):  
North America ◽  
North American ◽  
Molecular Data ◽  
North American Species ◽  
Eastern North America ◽  
Type Specimens ◽  
European Species ◽  
The North ◽  
Morphological And Molecular Data

The focus of this paper is the North American species of Cortinarius in subg. Leprocybe. Eighteen species, including twelve new ones, and two tentative (aff.) species, are delimited based on morphological and molecular data (DNA ITS-LSU sequences). Existing type specimens of species in subg. Leprocybe were also studied, and neo- or epitypes designated for C. cotoneus, C. melanotus, C. phrygianus and C. venetus to stabilize the nomenclature. In addition, to improve the infrasubgeneric classification of Leprocybe three new sections are proposed: sect. Fuscotomentosi, sect. Melanoti and sect. Squamiveneti. This study adds substantial information to the knowledge of subg. Leprocybe in North America against a background of European species. To date only two species, C. phrygianus and C. squamivenetus have been reported from both continents.

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