. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. GBAMINEOUS CBOPS. 87 brown, and can be taken up and rolled by. ; ^ The larva of this insect is an exceedingly fat grub, about an inch and a half in length, and the thickness of one's little finger. It is provided with strong jaws, six jointed legs, and occasions considerable damage to grass lands during the three years it remains in the larval form. In the summer of the third year the grub burrows to a depth of three to four feet below ground; and in this retreat it m
. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. GBAMINEOUS CBOPS. 87 brown, and can be taken up and rolled by. ; ^ The larva of this insect is an exceedingly fat grub, about an inch and a half in length, and the thickness of one's little finger. It is provided with strong jaws, six jointed legs, and occasions considerable damage to grass lands during the three years it remains in the larval form. In the summer of the third year the grub burrows to a depth of three to four feet below ground; and in this retreat it makes a sort of cocoon formed of particles of the surround- ing materials, agglutinated together by a sticky secretion. Within this cocoon the larva turns to the pupal stage,. Fig. 35.—CooKOHiTEB {Melolontha vulgaris). finally changing to a perfect insect during the summer of the fourth year. The beetle (which feeds on the leaves of the vine, as well as those of the elm, oak, and other trees) is about one inch in length, of a blackish-brown colour. The abdomen has white stripes and ends in a tip (curved ventrally), which projects beyond the elytra (Fig. 35). .The antennae are terminated by clubs composed of seven leaf-like joints in the male, and six in the female. " In their perfect state the cockchafers only live about a week, and during this time they frequent trees, and feed upon the leaves. The female, however, when ready to 1 Wood's Illustrated Natural History, vol. iii. p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Griffiths, A. B. (Arthur Bower), 1859-. London : G. Bell
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