GYRINUS (GYRINULUS) CAVATUS SP.NOV. FROM NORTH AMERICA DESCRIBED AND COMPARED WITH GYRINUS (GYRINULUS) MINUTUS FABRICIUS (COLEOPTERA: GYRINIDAE)

1990 ◽  
Vol 122 (4) ◽  
pp. 651-657
Author(s):  
F.M. Atton
Keyword(s):  
United States ◽  
North America ◽  
Type Locality ◽  
Northern United States

AbstractGyrinus cavatus sp.nov. (type locality: Floral, Saskatchewan, Canada), from across Canada, is compared with G. minutus Fabricius. The two species are broadly sympatric in the northern boreal and transition forests, but G. cavatus is more abundant southward into the northern United States. Therefore, the subgenus Gyrinulus Zaitsev is not monobasic, but has three species in North America, including G. rockinghamensis LeConte.

PLATYGYMNOPA, A NEW GENUS OF EPHYDRIDAE REARED FROM DECAYING SNAILS IN NORTH AMERICA (DIPTERA)

1971 ◽  
Vol 103 (2) ◽  
pp. 266-270 ◽  
Author(s):  
Willis W. Wirth
Keyword(s):  
United States ◽  
New Species ◽  
North America ◽  
North Dakota ◽  
Type Species ◽  
New Genus ◽  
Type Locality ◽  
Northern United States

AbstractPlatygymnopa new genus, type species P. helicis new species, is described from the northern United States and southern Canada, with type locality McHenry Co., North Dakota. In Montana, P. helicis was reared from larvae feeding within dead snails (Physidae, Aplexa hypnorum (L.)).

Notes on larval instars and adult antennae of Neodiprion abietis (Hymenoptera: Diprionidae)

2003 ◽  
Vol 135 (5) ◽  
pp. 745-748
Author(s):  
S.Y. Li
Keyword(s):  
United States ◽  
North America ◽  
United States Of America ◽  
Physiological Study ◽  
Balsam Fir ◽  
Larval Instars ◽  
Neodiprion Abietis ◽  
Northern United States

The native balsam fir sawfly, Neodiprion abietis (Harris) (Hymenoptera: Diprionidae), occurs throughout Canada, Alaska, and the northern United States of America (Rose et al. 1994; Drooz 1985). This sawfly was originally described as Lophyrus abietis (Hymenoptera: Diprionidae) (Harris 1841), then transferred to the genus Diprion (Hymenoptera: Diprionidae) (MacGillivray 1916). Rohwer (1918) established the genus Neodiprion for Nearctic species of the genera Lophyrus and Diprion. Based on differences in size, color, and female genitalic characters between adults reared from the genera Abies, Picea, Pseudotsuga, and Tsuga (Pinaceae), Ross (1955) considered N. abietis as a complex. After a thorough morphological and physiological study, Knerer and Atwood (1972) concluded that there were five strains of N. abietis in North America: one western and four eastern.

scholarly journals The Canadian Archaeological Radiocarbon Database (Card): Archaeological 14C Dates in North America and Their Paleoenvironmental Context

Radiocarbon ◽  
2011 ◽  
Vol 53 (2) ◽  
pp. 371-394 ◽  
Author(s):  
K Gajewski ◽  
S Munoz ◽  
M Peros ◽  
A Viau ◽  
R Morlan ◽  
...  
Keyword(s):  
United States ◽  
North America ◽  
Large Scale ◽  
Geographic Location ◽  
Current Status ◽  
Archaeological Sites ◽  
Demographic Trends ◽  
European Contact ◽  
Northern United States ◽  
Population Numbers

Databases of accumulated paleoecological and archaeological records provide a means for large-scale syntheses of environmental and cultural histories. We describe the current status of the Canadian Archaeological Radiocarbon Database (CARD), a searchable collection of more than 36,000 14C dates from archaeological and paleontological sites from across North America. CARD, built by the late Dr Richard Morlan of the Canadian Museum of Civilization, consists of uncalibrated 14C data as well as information about the material dated, the cultural association of the date (e.g. Paleoindian, Archaic, Woodland), and its geographic location. The database can be used to study questions relating to prehistoric demography, migrations, human vulnerability to environmental change, and human impact on the landscape, but biases relating to sampling intensity and taphonomy must first be accounted for. Currently, Canada and the northern United States are well represented in the database, while the southern United States is underrepresented. The frequency of 14C dates associated with archaeological sites increases through time from 15,000 cal yr BP until European contact, which likely reflects, among other factors, both the destruction of older cultural carbon due to erosion and dissolution and increasing population numbers through time. An exploratory analysis of the dates reveals their distribution in both time and space, and suggests that the database is sufficiently complete to enable quantitative analysis of general demographic trends.

scholarly journals Introduced Japanese burrowing cricket (Orthoptera: Gryllidae: Velarifictorus (Velarifictorus) micado) range continues to expand in North America

2018 ◽  
Vol 27 (2) ◽  
pp. 177-181 ◽  
Author(s):  
David E. Bowles
Keyword(s):  
United States ◽  
North America ◽  
Great Plains ◽  
Ecological Impacts ◽  
Data Sources ◽  
Eastern United States ◽  
Remote Areas ◽  
Public Data ◽  
Human Habitation ◽  
Northern United States

Japanese burrowing cricket, Velarifictorus (Velarifictorus) micado (Saussure, 1877), was introduced into the eastern United States in 1959 and has since increased its distributional range to include the eastern Great Plains and the northern United States. Although generally thought of as an urban species associated with human habitation, some specimens are now being captured in more remote areas, which is attributed to this species sometimes being macropterous and dispersing through flight. Public data sources such as BugGuide and iNaturalist were found to be sound, passive tools for identifying the expanding range of this species in the Americas. Collection and observation in atypical habitats suggest that potential ecological impacts may be occurring.

BACILLUS THURINGIENSIS AS A MEANS OF CONTROL FOR THE EUROPEAN SKIPPER, THYMELICUS LINEOLA (LEPIDOPTERA: HESPERIIDAE)

1977 ◽  
Vol 109 (1) ◽  
pp. 37-38 ◽  
Author(s):  
J. N. McNeil ◽  
W. A. Smirnoff ◽  
M. Letendre
Keyword(s):  
United States ◽  
Bacillus Thuringiensis ◽  
North America ◽  
Control Method ◽  
Ecological Problems ◽  
Northern United States ◽  
Target Effects

To date no entirely satisfactory control method has been developed for the European skipper, Thymelicus lineola (Ochs.), which was first introduced into North America in London, Ont., around 1910 (Saunders 1916) and has since spread throughout much of Canada and northern United States (Arthur 1966; Burns 1966; McNeil et al. 1975). In Quebec this insect has reached epidemic proportions in several areas (McNeil et al. 1975) and while Sevin® has been utilized, its application causes certain undesirable off-target effects. It is therefore essential to develop a means of control which does not cause these ecological problems.

Late Pleistocene zoogeographic shifts and new collecting records for Helophorus arcticus Brown (Coleoptera: Hydrophilidae) in North America

1989 ◽  
Vol 67 (5) ◽  
pp. 1171-1179 ◽  
Author(s):  
Alan V. Morgan
Keyword(s):  
United States ◽  
North America ◽  
Late Pleistocene ◽  
First Record ◽  
Eastern Canada ◽  
Northern United States ◽  
Late Wisconsinan ◽  
Climatic Records

Helophorus arcticus Brown is a rare hydrophilid beetle, previously known from localities in subarctic and eastern Canada. New sites, including the first record for the province of Quebec, are described with the modern habitats, and climatic records are provided for the known range of the species. Fossil specimens of H. arcticus are known from both early and late Wisconsinan sites in southern Canada and the northern United States. The movement of the species is hypothesized from the last (Sangamonian) Interglacial to the present together with potential new collecting areas in subarctic North America.

A STUDY OF THE SPECIES OF CINTRACTIA ON CAREX, KOBRESIA, AND SCIRPUS IN NORTH AMERICA

1952 ◽  
Vol 30 (4) ◽  
pp. 410-435 ◽  
Author(s):  
D. B. O. Savile
Keyword(s):  
United States ◽  
New Species ◽  
North America ◽  
Canadian Arctic ◽  
Taxonomic Study ◽  
Canadian Arctic Archipelago ◽  
New Varieties ◽  
Northern United States ◽  
Northern Alaska ◽  
One New Species

This is a taxonomic study of Cintractia spp. on nearly one hundred host species, mainly in Canada, northern United States, and southern Alaska. Coverage is very incomplete for northern Alaska, Greenland, and parts of the Canadian arctic archipelago. Eighteen species and varieties are recognized including one new species, Cint. atratae, and four new varieties, Cint. carpophila vars. kenaica and verrucosa and Cint. caricis vars. intermedia and acutarum. Two recombinations are made. The biology and phylogeny of the group are also discussed.

scholarly journals A Nursery Study of Leafy Spurge (Euphorbiaspp.) Complex from North America

Weed Science ◽  
1983 ◽  
Vol 31 (6) ◽  
pp. 866-873 ◽  
Author(s):  
Duane H. Ebke ◽  
Melvin K. McCarty
Keyword(s):  
United States ◽  
North America ◽  
Leafy Spurge ◽  
Leaf Width ◽  
Northern United States ◽  
Width Measurements ◽  
Reproductive Characters ◽  
Taxonomic Keys

Live root material of leafy spurge (Euphorbiaspp.) was collected from 38 locations across northern United States, southern Canada, and from 1 location in Austria. These materials were established in a nursery at Lincoln, Nebraska along withE. agrariaM. Bieb. andE. cyparissiasL. # EPHCY. Nineteen vegetative and reproductive characters, taken from various taxonomic keys, were measured on plants established for a period of 3 yr. Data were compared with previous taxonomic keys ofEuphorbiaspecies. A key developed by A. Radcliffe-Smith was used to separate the nursery entries. Leaf width measurements were the most useful taxonomic criteria. Five morphologically separable taxa were observed:E. × pseudovirgata(Schur) Soó,E. esulaL. # EPHES,E. uralensisFisch. ex Link.,E. agrariaM. Bieb., andE. cyparissiasL.

STUDIES OF CANADIAN THELEPHORACEAE: IV. CORTICIUM ANCEPS IN NORTH AMERICA

1949 ◽  
Vol 27c (5) ◽  
pp. 241-252 ◽  
Author(s):  
H. S. Jackson
Keyword(s):  
United States ◽  
North America ◽  
Host Specialization ◽  
Tabular Form ◽  
Forest Reserve ◽  
Full List ◽  
History Of ◽  
Northern United States ◽  
Future Work

A parasitic basidiomycete, referred to Corticium anceps (Bres. & Syd.) Gregor, has been found to be common on a large number of hosts in the Timagami Forest Reserve, Ont. The same species is known to occur also in Quebec and in four of the northern United States. The fungus is transferred to the genus Ceratobasidium. The history of our knowledge of this parasite is reviewed, and a description and illustration of the fungus is provided as well as a discussion of the symptomology with illustrations of the effect on several hosts. A full list of the hosts on which the fungus has so far been found in North America, with the provinces and states in which collections have been made, is given in tabular form. The incompleteness of our knowledge with reference to host specialization, infection, and colonization of the host, and overwintering of the fungus is discussed and suggestions made for future work.

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