Some Aspects of the Biology and Dispersal of the Pine Tortoise Scale, Toumeyella numismaticum (Pettit and McDaniel) (Homoptera: Coccidae)

1954 ◽  
Vol 86 (12) ◽  
pp. 570-575 ◽  
Author(s):  
F. B. Rabkin ◽  
R. R. Lejeune

The senior author conducted this investigation during 1937 and 1938 in the Sandilands Forest Reserve, Manitoba. The results were presented in an unpublished report (Rablrin, 1938). Owing to the current importance of this insect in Manitoba and the Lake States of the United States, it was considered advisable to publish those aspects of the work relating to life history and dispersal. This was undertaken by the junior author.

1960 ◽  
Vol 92 (7) ◽  
pp. 500-516 ◽  
Author(s):  
W. J. Turnock

The larch sawfly is a common defoliator of trees of the genus Larix throughout the Holarctic Region. In North America it has been reported from every province of Canada but in the United States it is confined to the northeastern States, the Lake States, and north-western Montana (Drooz, 1956). The northern limits of distribution have not been determined, but extend as far as 61° N. lat. north of Saskatchewan.


1892 ◽  
Vol 24 (11) ◽  
pp. 270-273
Author(s):  
E. W. Doran

Although this is a common insect in many parts of the United States, it is not generally found in great numbers in any locality, and, notwith standing its general distribution, the various staes of the insect seem not to have been describe or figured.While I am not yet able to clear up all the points in its history, I have studied the insect in all its stages, though I have not reared it from the egg to maturity, on account of the time required for it to develop—in all probability three years.


2019 ◽  
Vol 20 (1) ◽  
pp. 3-21
Author(s):  
Johanna Söderström

The article argues for the utility of life diagrams as a methodological and analytical tool across various life history projects. Using research on post-war political mobilization among former combatants (in Colombia, Namibia and the United States), the article demonstrates how a life diagram can modify the interview and become a useful analytical tool. During the interview the diagram helps both the research participant and the interviewer to compare different events, weigh various experiences, and ensure that all periods of the life are covered even if the interview is not done chronologically. During the analysis, the diagram offers a contrast with the transcript of the interview, and the shape of the life diagram can be compared across interviews in search of similar types. This visual turn can help address issues of empowerment, through promoting the research participants’ own interpretation of their lives.


1962 ◽  
Vol 94 (10) ◽  
pp. 1103-1107 ◽  
Author(s):  
C. E. Brown

The Bruce spanworrn, Operophtera bruceata (Hulst), is most common in the mid latitudes of the North American Continent; in Canada it occurs from Newfoundland to the interior of British Columbia (Prentice, In Press) and has been reported from Vermont and Wisconsin in the United States (Craighead, 1950.) Three outbreaks of this insect have been recorded in Alberta. The first occurred in 1903 (de Gryse, 1925) and was apparently of short duration. The second reported by Wolley Dod (1913) occurred in 1913 and denuded hundreds of acres of aspen poplar. Heavy defoliation in the third outbreak became evident in 1957 (Brown, 1957) but an examination of Forest Insect Survey records revealed that population buildup began about 1951. The outbreak continued to expand until 1958 and began to decline in 1959; by 1961 populations were again low except for one or two isolated areas where moderate to low populations persisted. At the peak of the outbreak in 1958 approximately 50,000 square miies were moderately or heavily infested and many more lightly infested.


2017 ◽  
Vol 12 (3) ◽  
pp. 293-314 ◽  
Author(s):  
Katie Dingeman ◽  
Yekaterina Arzhayev ◽  
Cristy Ayala ◽  
Erika Bermudez ◽  
Lauren Padama ◽  
...  

The United States deported 24,870 women in 2013, mostly to Latin America. We examine life history interviews with Mexican and Central American women who were apprehended, detained, and experienced different outcomes. We find that norms of the “crimmigration era” override humanitarian concerns, such that the state treats migrants as criminals first and as persons with claims for relief second. Removal and relief decisions appear less dependent on eligibility than geography, access to legal aid, and public support. Women’s experiences parallel men’s but are often worsened by their gendered statuses. Far from passively accepting the violence of crimmigration, women resist through discourse and activism.


2012 ◽  
Vol 144 (1) ◽  
pp. 93-107 ◽  
Author(s):  
Jan Ševčík ◽  
Jostein Kjærandsen ◽  
Stephen A. Marshall

AbstractThe cave-living and monobasic fungus gnat genusSpeoleptaEdwards is reviewed with a description of the first Nearctic species,Speolepta vockerothisp. nov., from Canada (caves in Ontario and British Columbia) and the United States (Alaska). Its morphology, life history, and biology are documented and compared with the single European speciesSpeolepta leptogaster(Winnertz). A further new species,Speolepta orientalissp.nov., is described based on a single male from northern Vietnam, representing the first record of this genus from the Oriental Region.


1870 ◽  
Vol 2 (4) ◽  
pp. 43-44
Author(s):  
V. T. Chambers

Seeing in the last number of the Canadian Entomologist, a description of the egss of A. Luna, reminds me to ask of you the explanation of a curious circumstance in the life-history of one bred by me from the larva last year. I will premise that I am writing without my notes, and therefore cannot give figures accurately, but can give the facts. There may be nothing very strange about it, but two of the best entomologists in the United States inform me that it is entirely new to them. It is this:–Some time in the latter part of the summer of 1868 I took, feeding on walnut leaves, a mature larva of A. Luna; from which I did not houi to rear the mature insect, because I counted on the larva over twenty eggs like those of a Tachina, Underneath some of the eggs I could discern with a lens a minute opening through which the fly-larva had entered the body of the Luna larva. The skin of the latter was more or less discoloured under each egg, but under some-under many in fact there was a dense black spot, sometimes two lines in diameter.


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