Economic entomology for the . economicentomolo00smit_0 Year: 1896 THE INSECT WORLD. 229 as to render unprofitable if it does not kill them. The beetles are long-lived, and hide during the day on the under side of the leaves on which they feed. Hence, collecting and destroying them is the most satisfactory remedy, while the use of a tobacco extract on the ground will act both as a fertilizer and to destroy the subterranean larvae. The clover-leaf beetle, Phytonomus pundatus, is another quite large species, dull brown in color, with indefinitely striped wing- FiG. 234. Clover-leaf b
Economic entomology for the . economicentomolo00smit_0 Year: 1896 THE INSECT WORLD. 229 as to render unprofitable if it does not kill them. The beetles are long-lived, and hide during the day on the under side of the leaves on which they feed. Hence, collecting and destroying them is the most satisfactory remedy, while the use of a tobacco extract on the ground will act both as a fertilizer and to destroy the subterranean larvae. The clover-leaf beetle, Phytonomus pundatus, is another quite large species, dull brown in color, with indefinitely striped wing- FiG. 234. Clover-leaf beetle, Phytonomus punctatus.—a, egg; b, b, larvae feeding; c, very young larva;/, cocoon, its net-like character shown at^/ h, pupa; i, beetle, on clover-stalk ; k, same, enlarged ; other letters refer to structural details. covers, and a short, stout beak. The larva is green, its form well shown in the figure, and it feeds chiefly at night, eating irregular holes in the leaves. When full grown it forms a peculiar net-like cocoon at or a little beneath the surface of the ground and pupates, becoming adult a few days thereafter. The insects hibernate in the larval stage, and their injury becomes manifest
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