scholarly journals THE LIFE-HISTORY OF THE NORTHERN MOLE-CRICKET—GRYLLOTALPA BOREALIS

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.

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.


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.


1877 ◽  
Vol 4 (11) ◽  
pp. 481-496
Author(s):  
Searles V. Wood

From no part of the world have we of late years derived more additions to the Geological Record than from North America. Besides important additions to the earliest pages of that record, the rich collections made by the United States Surveyors, both of fauna and flora, from the Cretaceous, Eocene, and Miocene deposits, have thrown much light upon the life history of the Earth; and it is even contended that they have bridged over the interval which, notwithstanding the Maestricht beds, the Pisolitic, and the Faxoe Limestones, still remains sharply marked between the Cretaceous and Tertiary formations of Europe so far as they have yet been examined.


Author(s):  
E. J. Allen

Amongst the numerous subjects which have occupied the attention of the fishery authorities of the United States, that of the great decline in the productiveness of the lobster fishing industry has received much consideration, and several competent naturalists have, in consequence, devoted themselves to a scientific study of the habits and life-history of the American species. This species (Homarus Americanus) is so nearly allied to the European lobster (Homarus vulgaris), that the results arrived at for it, with regard to such questions as the time of year at which spawning takes place, the length of time during which the eggs are carried by the female attached to the under side of the abdomen, and the time of year at which the eggs are hatched, might be expected to apply, to some extent at least, to the latter. That this is so, appears to be abundantly proved by Dr. Ehrenbaum's study of the lobsters which frequent the shores of Heligoland, and certain observations which I have been able to make on lobsters taken in the neighbourhood of Plymouth during the last two years, in the course of my work on the nervous system of the embryo, also tend to confirm this view.


1980 ◽  
Vol 112 (2) ◽  
pp. 217-218 ◽  
Author(s):  
Ray F. Morris

The wharf borer, Nacerdes melanura (L.) (Fig. I), is widely distributed throughout the world. It has been recorded in England, New Zealand, Denmark, Germany. Siberia, Japan, and the Bahama Islands (Balch 1937). Walker (1936) reported N. melanura from Syria, Shanghai, Korea, Japan, South Africa, Brazil, Argentina, Costa Rica, and the United States. In the United States, it has been found in most coastal states, and also in Michigan, Indiana, Missouri, Kansas, and New Mexico. In Canada, it is known to occur in Newfoundland, Nova Scotia, New Brunswick, Quebec, Ontario, Manitoba, and British Columbia. The life history of the wharf borer in Canada has been outlined in detail by Balch (1937) and Spencer (1957).


1951 ◽  
Vol 83 (5) ◽  
pp. 109-120 ◽  
Author(s):  
A. R. Brooks

A great number of papers and notes have been written on the root maggots attacking cabbage, cauliflower, turnip, and radish in Canada and the United States during the past 75 years. These deal chiefly with the occurrence, life-history, and control of the cabbage maggot, Hylemya brassicae (Bouché), or species which have been misidentified as that species. The Canadian work has followed the lead of Gibson and Treherne (1916), but in spite of the accumulation of information on the life-history of the species, on cultivation methods, and on insecticides, the pests of these cruciferous plants remain as noxious as ever.


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