Fifth Report of the United States Entomological Commission: Being a Revised and Enlarged Edition of Bulletin No. 7, on Insects Injurious to Forest and Shade TreesU.S. Government Printing Office, 1890 - 957 pages |
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Page 15
... egg ( d ) was laid on the head , and the larva soon hatching , bored under the skin , entering the body so as finally to disappear out of sight . The eggs are laid either within or on the outside of the body of the host , usually some ...
... egg ( d ) was laid on the head , and the larva soon hatching , bored under the skin , entering the body so as finally to disappear out of sight . The eggs are laid either within or on the outside of the body of the host , usually some ...
Page 18
... eggs under the bark , the Platysoma oblongum introduces itself by the hole which has given entrance to the first named insect ; it lays its eggs in the gallery of the Bostri- chus , and from those eggs are born the carnivorous larvæ ...
... eggs under the bark , the Platysoma oblongum introduces itself by the hole which has given entrance to the first named insect ; it lays its eggs in the gallery of the Bostri- chus , and from those eggs are born the carnivorous larvæ ...
Page 19
... eggs . Influence of temperature on insect life . - The following statements are taken from Judeich and Nitsche's Lehrbuch , and will apply to insects in this country : " The influence of temperature may either work injuriously on insect ...
... eggs . Influence of temperature on insect life . - The following statements are taken from Judeich and Nitsche's Lehrbuch , and will apply to insects in this country : " The influence of temperature may either work injuriously on insect ...
Page 33
... Eggs were laid abundantly throughout the season . Many of these seemed unhealthy and failed to develop , probably because they were poisoned . Many hatched , but the young larvæ soon died . The eggs were seldom deposited on the young ...
... Eggs were laid abundantly throughout the season . Many of these seemed unhealthy and failed to develop , probably because they were poisoned . Many hatched , but the young larvæ soon died . The eggs were seldom deposited on the young ...
Page 54
... eggs that it becomes unwieldy and inert , falling from side to side as its position is shifted . A specimen which I once obtained extruded upwards of three hundred eggs within a few hours after its capture , its abdomen becoming ...
... eggs that it becomes unwieldy and inert , falling from side to side as its position is shifted . A specimen which I once obtained extruded upwards of three hundred eggs within a few hours after its capture , its abdomen becoming ...
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Common terms and phrases
abdominal abdominal segment anal antennæ apex August band bark basal base beetle beneath blackish body borer broad brownish Brunswick caterpillar Cecidomyia CERAMBYCIDE cocoon COLEOPTERA color costa Cynips dark brown darker discal dorsal dots edge eggs elytra Entom Entomologist Expanse of wings feeding female Fitch flattened fore wings forewings front galls gray green hairs Harris head HEMIPTERA hickory hind wings imago insect joint July June labrum larva Larva.-Body larvæ lateral lateral line leaf leaves legs Length LEPIDOPTERA male maple margin median mesothoracic middle moth nearly oblique Order COLEOPTERA Order LEPIDOPTERA outer pair pale paler palpi patch pine plate posterior prolegs prothoracic segment punctured pupa pupated reddish Riley rounded September side slender slightly species specimens spines spiracles spots spruce stripe surface third thorax tibiæ transverse trees trunk tubercles twigs vein warts whitish willow wing-covers wood worm yellow yellowish
Popular passages
Page 37 - Heat the solution of soap and add it boiling hot to the kerosene. Churn the mixture by means of a force-pump and spray-nozzle for five or ten minutes. The emulsion, if perfect, forms a cream, which thickens on cooling, and should adhere without oiliness to the surface of glass. Dilute, before using, one part of the emulsion with nine parts of cold water. The above formula gives three gallons of emulsion, and makes, when diluted, thirty gallons of wash.
Page 356 - ... 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 sawdust 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.
Page 475 - ... of the trunk and large branches during the whole of the warm season. They immediately fly into the top of the tree, and there feed upon the epidermis of the tender twigs, and the petioles of the leaves, often wholly denuding the latter, and causing the leaves to fall. They deposit their eggs, two or three in a place, upon the trunk and branches, especially about the forks, making slight incisions or punctures, for their reception, with their strong jaws. As many as ninety eggs have been taken...
Page 739 - Thing therein contained shall cease and be absolutely void, and the Lands and Premises hereby granted shall revert to and vest in us our heirs and Successors as if this our present Grant had not been made, any Thing herein before contained to the contrary in any wise notwithstanding.
Page 554 - The scale of the male resembles that of the female, excepting that it is only one-fourth as large ; the posterior side is prolonged into a flap, which is quite thin ; and the part which covers the larval skin Is often lighter than the remainder of the scale. Male. — The male is light yellow, with the thoracic band brown, and the eyes purplish black.
Page 336 - There are two or three pairs of lobes. The median lobes are well developed, but vary in outline ; the second lobe of each side is less than one-half as large as the median lobes, elongated, and with one or two notches on the lateral margin; the third lobe is still smaller and pointed, or is obsolete. There are two pairs of incisions of the margin, one between the first and second lobes of each side, and one between the second and third lobes ; they are small, but are rendered conspicuous by the thickenings...
Page 270 - ... composed of a slight web of silk intermingled with a few hairs. They remain in the cocoons in the chrysalis state through the winter, and are transformed to moths in the months of June and July. These moths are white, and without spots; the fore thighs are tawny yellow, and the feet blackish.
Page 831 - Moreover, as we have seen in the case of the attacks of the larch worm, the defoliation of spruces and firs repeated two and perhaps three summers is sufficient to either kill the tree outright, or so weaken it that bark-boring beetles can complete the work of destruction. We are now inclined to the opinion, then, that the Bud Tortrix is the sole or at least...
Page 104 - Scale of female. — The scale of the female is long, narrow at the anterior end, much widened posteriorly, and quite convex. The exuviae are brownish yellow; the secretion, of which the remainder of the scale is composed, is white; but all of my specimens appear dark gray, being more or less covered with the hairs of the stem to which the scale was attached and with dust. Length of scale, 2 mm. (.08 inch). Female. — The last segment of the female presents the following characters : The anterior...
Page 731 - ... trees, has proved fatal. In July the worm spins a whitish, thin, papery cocoon in the mass of exuding pitch, which seems to act as a protection to both the larva and the chrysalis.