. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. GRAMINEOUS CROPS. 89 and tlioras. The beetles are commonly met with, on flowers, etc., in the daytime; and their larvae are too well-known everywhere, as wire-WORMS, being long and slender, with very tough skins, and feeding on the roots of ; The wire-worms gnaw, and sometimes destroy to a serious extent, the roots of various farm crops (grain and root, as well as fodder crops). The larvae (wire- worms) of the skip-jacks, or click-beetles, are long, slender, and eit
. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. GRAMINEOUS CROPS. 89 and tlioras. The beetles are commonly met with, on flowers, etc., in the daytime; and their larvae are too well-known everywhere, as wire-WORMS, being long and slender, with very tough skins, and feeding on the roots of ; The wire-worms gnaw, and sometimes destroy to a serious extent, the roots of various farm crops (grain and root, as well as fodder crops). The larvae (wire- worms) of the skip-jacks, or click-beetles, are long, slender, and either slightly flattened or cylindrical, usually covered. Fig. 36.—Click Beetles aud Wikewokms. A. Slater .spittator and larva. B. Elater obscurits and larva. C. Elater sanguineus. (AH nat. size.) with a hard, shining, ochre-coloured skin, and furnished with a horny head and three pairs of short legs. They live either three or five years, according to the supply of food. A scarcity of food means a prolonged existence in the larval stage. In the winter the larvae go deeper in the soil, to avoid the severity of frosts. At the expiration of the larval period, the wire-worms again go deeper in the soil, surround themselves in earth-cells, and there change to pupae. The pupae either hibernate until the following spring, or appear as perfect insects in from four- teen to twenty-one days' during the month of August " The eggs from which these grubs are hatched are laid. 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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Keywords: ., bookauthorgriffith, bookcentury1800, bookdecade1890, bookyear1890
