Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . n life-historyand habits. The adult, a handsome, brassy or cop-per-colored beetle, about four-fifths of an inch long,deposits eggs during the summer on the trunk of thewild and cultivated cherry. These eggs hatch intolarvae that bore through the bark to the sap wood,upon which they live. They gradually grow largeruntil, when full grown, [they resemble Fig. 10 then pupate, and shortly afterwards againchange to the beetle state. Remedies.—Fortunately this borer is rarely se
Insects and insecticidesA practical manual concerning noxious insects and the methods of preventing their injuries . n life-historyand habits. The adult, a handsome, brassy or cop-per-colored beetle, about four-fifths of an inch long,deposits eggs during the summer on the trunk of thewild and cultivated cherry. These eggs hatch intolarvae that bore through the bark to the sap wood,upon which they live. They gradually grow largeruntil, when full grown, [they resemble Fig. 10 then pupate, and shortly afterwards againchange to the beetle state. Remedies.—Fortunately this borer is rarely seri-ously injurious. Should it become so, the treatmentrecommended for the Flat-headed Apple-tree Borerwould be also applicable in this case. INJURING THE LEAVES. The Cherry Aphis. Myzus twigs and under surface of the leaves of thecherry are frequently thickly infested during May INJURING THE TRUNK. 73 and June by Finall, shining black plant-lice, thatsuck out the sap and deform the leaves. This insectis the Cherry Aphis. The wingless form is repre-sented much magnified at a, Fig. 31, and the winged. a b Fig. 31. Cherry Aphis: a, wingless female; b, winged female. Magnified. form at b of the same figure, the straight lines at theright indicating the natural size. The Cherry Aphis winters over on the twigs in theegg state. Early in spring the eggs hatch into young-aphides that crawl upon the bursting buds, insertingtheir tiny sap-sucking beaks into the tissues of theunfolding leaves. In a week or ten days they becomefull grown, and begin giving birth to young lice,which also soon develop, and repeat the process. Inthis way they increase with marvellous of these early spring forms are wingless, butduring June great numbers of winged lice appear,and late in June or early in July they leave thecherry, migrating to some other plant, although wedo not yet know what that other plant is. Here they 74 INSECTS AFFECTING THE CHERRY. continue developing throughout
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Keywords: ., bookcentury1800, bookdecade1890, bookidi, booksubjectinsecticides
