Report of the United States Entomological Commission for the Years ..., 5. köide,1886–1890. osaU.S. Government Printing Office, 1890 |
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Page 6
... thorax , and hind - body or abdomen . They usually have three pairs of legs attached to the mid - body or thorax , and two pairs of wings . Most insects pass through a series of changes . In the butterfly , for example , after hatching ...
... thorax , and hind - body or abdomen . They usually have three pairs of legs attached to the mid - body or thorax , and two pairs of wings . Most insects pass through a series of changes . In the butterfly , for example , after hatching ...
Page 68
... thorax , and the depressed portions of the elytra are of a dull coppery color . The head is sunk into the thorax to the eyes , is densely punctured , and is clothed in front with fine white hairs , which are directed downwards . Upon ...
... thorax , and the depressed portions of the elytra are of a dull coppery color . The head is sunk into the thorax to the eyes , is densely punctured , and is clothed in front with fine white hairs , which are directed downwards . Upon ...
Page 71
... thorax , the seven or eight terminal joints each with a more or less distinct , forwardly - directed , brown thorn ; the snout lying on the breast and varying according to sex ; abdominal joints with a more or less distinct row of small ...
... thorax , the seven or eight terminal joints each with a more or less distinct , forwardly - directed , brown thorn ; the snout lying on the breast and varying according to sex ; abdominal joints with a more or less distinct row of small ...
Page 72
... thorax and wing - covers , several of which punctures are in the centre of small black dots , which in places are confluent into small irregular spots . The head is of the same width as the anterior end of the thorax , and has a deep ...
... thorax and wing - covers , several of which punctures are in the centre of small black dots , which in places are confluent into small irregular spots . The head is of the same width as the anterior end of the thorax , and has a deep ...
Page 73
... thorax to its forward end . The scutel is ash - gray in its middle and black upon each side . The wing - cov- ers almost always show a large oblique and irregular triangular spot of black on their outer side forward of the middle , and ...
... thorax to its forward end . The scutel is ash - gray in its middle and black upon each side . The wing - cov- ers almost always show a large oblique and irregular triangular spot of black on their outer side forward of the middle , and ...
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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 burrow 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 posterior prolegs prothoracic segment punctured pupa pupated reddish Riley rounded scales 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 worm yellow yellowish
Popular passages
Page 739 - 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...
Page 356 - The eggs are soon hatched, and the grubs immediately burrow into the bark, devouring the soft inner substance that suffices for their nourishment till the approach of winter, during which they remain at rest in a torpid state. In the spring they bore through the sapwood, more or less deeply into the trunk, the general course of their winding and irregular passages, being in an upward direction from the place of their entrance.
Page 885 - ... also attacked the terminal branches and twigs of the same tree, eating off the leaves and leaving a mass of excrement on one side of the twig, within which they had spun a silken gallery in which the worm lived. On removing the bunches of diseased cones to Providence...
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 356 - 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 * Leptura picta, Drury; Clytusjiexuoeus, Fabricins.
Page 319 - They are limply dropped loosely upon the ground from whatever height the females may happen to be, and, during the latter part of autumn, where the insects are common, one hears a constant pattering, not unlike drops of rain, that results from the abundant dropping of these eggs, which in places lay so thick among and under the dead leaves that they may be scraped up in great quantities.
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 226 - The prothoracic segment, or that next to the head, is transversely oblong, being about twice as broad as long ; there is a pale dorsal corneous transversely oblong shield, being about two-thirds as long as wide, and nearly as long as the four succeeding segments; this plate is smooth, except on the posterior half, which is rough, with the front edge irregular and not extending far down the sides. Fine hairs arise from the front edge and side of the plate, and similar hairs are scattered over the...
Page 632 - Jier eggs, the female begins to eat a slit near the base of the leaf on each side of the midrib, and at right angles to it, so that the leaf may be folded together. Before beginning to roll up the leaf she gnaws the stem nearly off, so that after the roll is made, and has dried for perhaps a day, it is easily detached by the wind and falls to the ground. When folding the leaf, she tightly rolls it up, neatly tucking in the ends, until a compact, cylindrical solid mass of vegetation is formed. Before...
Page 37 - 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.