The Canadian Entomologist, Volúmenes11-12

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Entomological Society of Canada, 1879
 

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Página 196 - Canada, reported at the meeting of the Entomological Club of the American Association for the Advancement of Science at...
Página 153 - In the month of September these beetles gather on the locust trees, where they may be seen glittering in the sunbeams, with their gorgeous livery of black velvet and gold, coursing up and down the trunks in pursuit of their mates, or to drive away their rivals, and stopping every now and then to salute those they meet with a rapid bowing of the shoulders, accompanied by a creaking sound indicative of recognition or defiance. Having paired, the female, attended by her partner, creeps over the bark,...
Página 154 - ... fibrous fragments of wood, to get rid of which the grubs are often obliged to open new holes through the bark. The seat of their operations is known by the oozing of the sap and the dropping of the saw-dust from the holes. The bark around the part attacked begins to swell, and in a few years the trunks and limbs will become disfigured and weakened by large porous tumors, caused by the efforts of the trees to repair the injuries they have suffered.
Página 137 - ... southerly direction, find a similar explanation. They may be looked upon as continuations of the autumn flights. Hibernating in the temperate belt, they are awakened and aroused upon the advent of spring, to find the Milk-weeds not yet started, and they instinctively pass to more southern regions. There is a southward migration late in the growing season in congregated masses, and a northward dispersion early in the season through isolated individuals.
Página 138 - ... immediately," according to Mr. FWPutnam,* "collects a small amount of pollen mixed with honey, and in this deposits from seven to fourteen eggs, gradually adding to the pollen mass until the first brood is hatched. She does not wait, however, for one brood to be hatched before laying the eggs of another, but, as soon as food enough has been collected, she lays the eggs for a second.
Página 190 - It is a work which has involved great labor, and besides containing much that is new, covers the entire field of our knowledge in reference to this destructive pest. Prof. CV Riley, of Washington, has issued a special report on the Silk-worm, being a brief manual of instructions for the production of silk, with illustrations. Prof. AR Grote has written Preliminary Studies on the North American Pyralidae, and Samuel H. Scudder a Century of Orthoptera. Several additional numbers of Edwards' magnificent...
Página 113 - Bail before the association of naturalists, in 186i, which were illustrated by the exhibition of mould grown on mash, on which the fungus of the house-fly had been sown, and by a keg of beer brewed from such mash, and by a cake baked with this yeast. Both productions were declared perfect by all who tasted them — an experiment in which I...
Página 97 - Of all the wood-boring insects in our land this is by far the most pernicious, wounding the trees the most cruelly. The stateliest oaks in our forests are ruined, probably in every instance where one of these borers obtains a lodgment in their trunks.
Página 30 - In a paper published in the last volume of the "Transactions of the Academy of Sciences," of St. Louis, the life-history of several of our common blister-beetles is traced. The present paper gives a brief resume of the facts there recorded, showing that the beetles belonging to the genera Epicauta and...
Página 168 - ... homologies by the study of their hypodermic development. The second Concerns the mouth parts. The general homologies of these organs were clearly and accurately enough stated by Savigny, though one may perhaps have a right to consider the last word not yet said when one recalls Saussure's recent claim to have found in Hemimcrus a second labium.

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