. Les insectes nuisibles pour les fruits. Illustré de quatre cent quarante coupes de bois. Les insectes nuisibles. 280 LES INSECTES NUISIBLES À LA VIGNE. soap-suds ont également été recommandés, et méritent des procès. Par les froides matinées les scarabées sont relativement slug- gish et inactif, et peut alors être secouée de la vigne sur les draps et collectées et détruites. Ces insectes sont beaucoup plus abondants en certaines saisons que dans d'autres. No 151.-La Rose Ponderosa. Suhspiiiosus Macrodactylus (Fabr.). ^^son scarabée, communément connu sous le nom de la rose-bug, attaque le rose, et est également très nuisible à la vigne, l'Apple,

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. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. 280 INSECTS INJURIOUS TO THE GRAPE. soap-suds have also been recommended, and are deserving of trial. On chilly mornings the beetles are comparatively slug- gish and inactive, and may then be jarred from the vines on sheets and collected and destroyed. These insects are much more abundant in some seasons than in others. No. 151.—The Rose Beetle. Macrodactylus suhspiiiosus (Fabr.). ^^his beetle, commonly known as the rose-bug, attacks the rose, and is also very injurious to the grape-vine, the apple, cherry, peach, plum, etc. Its body (see Fig. 289) is a little ^ ^^ more than one-third of an inch Ions:, slender, and Fig. 289. • i- i i , tapenng a little towards each extremity. Its color is dull yellowish when fresh, arising from its being covered with a grayish-yellow down or bloom, and its long, sprawling legs are of a dull pale-reddish hue, with the joints of the feet tipped with black and armed with very long claws. The down on the body of the beetle is easily rubbed off, producing quite a change in its appearance, the head, thorax, and the under side of its body becoming of a shining black. Tliese beetles sometimes appear in swarms about the time of the blossoming of the rose, which in the Northern United States and Canada is usually during the second week in June; tliey remain about a month, at the end of which period the males become exhausted, drop to the ground, and perish^, while the females burrow under the surface, deposit their eggs, then reappear above ground, and shortly afterwards die also. Each female lays about thirty eggs, which are buried in the earth to the depth of from one to four inches ; the eggs are about one-thirtieth of an inch in diameter, whitish, and nearly globular. In about three weeks they hatch, and the young larvae at once begin to feed on such tender roots as are within their reach. They attain full growth in the autumn, when they ar

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