Report, Temas3-5 |
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Términos y frases comunes
abdomen antennæ anteriorly appears apple band bark base beetle black dot black spots blackish borer broad brown BUPRESTIS burrow caterpillar cavity cell cherry chestnut chestnut colored cocoon Coleoptera common currant curved cylindrical dull dusky edge eggs elevated EMPEROR MOTH female Fitch flattened fore wings gall-fly galls genus gray green grub hairs half Harris Harris's Treatise hazelnut head HICKORY hind wings Homoptera Hymenoptera inch inner margin insects joints July June larva larvæ leaf leaves legs length Lepidoptera limbs locust male middle moth New-York numerous oblique outer margin oval ovipositor pale yellow paler pine preceding punctures pupa resembling round SCALE INSECT segment shanks shining short side similar slender slightly sometimes species specimens stalks stripe surface suture tawny yellow thick thorax transverse TREE-HOPPER trees TRUNK twigs veins weevil whilst whitish width wing covers wing-covers wood worm yellow color yellowish
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Página 63 - But they soon learned that what is sauce for the goose is not always sauce for the gander...
Página 55 - The females of these insects do not extrude their eggs. Clinging closely to the leaf with their heads towards its base, they die, their distended abdomens appearing like a little bag filled with eggs. The outer skin of the abdomen soon perishes and disappears, leaving the mass of eggs adhering to the side of the leaf, but completely covered over and protected by the closed wings of the dead fly.
Página 18 - ... operation, requiring much skill and calculation, for the limb must not break and fall while he is in the act of gnawing it apart, or he will be crushed by being at the point where it bends and tears asunder, or will fall from the cavity there when it breaks open and separates. To avoid such casualties, therefore, he must after severing it have time to withdraw himself back into his hole in the limb and plug the opening behind him before the limb breaks and falls.
Página 19 - ... his descent therein to the ground. It is quite probable that he does not always sever the limb sufficiently in the first instance for it to break and fall. Having cut it so much as he deems prudent, he withdraws and commences feeding upon the pith of the limb above the place where it is partially severed, until a high wind occurs. If the limb is not hereby broken, as soon as the weather becomes calm he very probably returns and gnaws off an additional portion of the wood, repeating this act again...
Página 52 - ... body ; the latter part of July changing to its perfect form with wings fully grown, and then no longer covering itself with foam, but continuing to the end of the season, puncturing and drawing its nourishment from the bark as before. The perfect insect a flattened oval treehopper, 0.40 long, with its wing covers held in form of a roof, its color brown from numberless blackish punctures upon a pale ground, a smooth whitish line along the middle of its back, and a small smooth whitish spot in...
Página 7 - ... of the trunk, boring the wood here usually in a longitudinal direction, and moving backwards and forth in its burrow, enlarging it by gnawing its walls as it increases in size, whereby the excavation comes to present nearly the same diameter through its whole length.
Página 19 - ... been aware that the weaker sappy fibers outside next to the bark could not be relied upon for sustaining a limb of this size, as they are where the limb is smaller. With such consummate skill and seemingly superterrestrial intelligence does this philosophical little carpenter vary his proceedings to meet the circumstances of his situation in each particular case!
Página 47 - 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 hereinbefore contained to the contrary in any wise notwithstanding.
Página 46 - ... of May that they are abroad in the greatest numbers, and it is chiefly at that time that their eggs are deposited. Young thrifty-growing pines are its favorite resort, and among these it selects those that are most vigorous, and whose topmost shoot has made the greatest advance the preceding year.
Página 18 - ... can bring them into his service. He accordingly severs the limb so far that it will remain in its position until a strong gust of wind strikes it, whereupon it will break off and fall. But the most astonishing part of this feat remains to be noticed. The limb which he cuts off is sometimes only a foot in length and is, consequently quite light ; sometimes ten feet long, loaded with leaves, and very heavy. A man by carefully inspecting the length of the limb, the size of its branches, and the...