Insects injurious to fruits . ATTACKING THE BRANCHES. Fig No. 9.—The Woolly-louse of the Apple. Schizoneura lanigera (Hausm.). This is the same species as the apple-root plant-louse (No, 1),Out in this form the insects attack the trunk and limbs of theapple-tree, living in clusters, and secreting over themselvessmall patches of a cotton-like covering. (See Fig. 13, wherethe insects are represented magnified.)They are often found about the baseof twigs or suckers springing fromthe trunk, and also about the base ofthe trunk itself, and around recentwounds in the bark. In autumn theycommonly affe
Insects injurious to fruits . ATTACKING THE BRANCHES. Fig No. 9.—The Woolly-louse of the Apple. Schizoneura lanigera (Hausm.). This is the same species as the apple-root plant-louse (No, 1),Out in this form the insects attack the trunk and limbs of theapple-tree, living in clusters, and secreting over themselvessmall patches of a cotton-like covering. (See Fig. 13, wherethe insects are represented magnified.)They are often found about the baseof twigs or suckers springing fromthe trunk, and also about the base ofthe trunk itself, and around recentwounds in the bark. In autumn theycommonly affect the axils of the leaf-stalks (Fig. 13), towards the ends oftwigs, and sometimes multiply to suchan extent as to cover the whole un-der surface of the limbs and also ofthe trunk, the tree looking as thoughwhitewashed. They are said to affect most those trees which. 28 INSECTS INJURIOUS TO THE APPLE. yield sweet fruit. Tliis woolly-louse is very common iuEurope, especially in Germany, the north of France, andEngland, where it is more destructive than in this country,and, although generally known there under the name ofthe American Blight, it is believed to be indigenous toEurope, and to have been originally brought from Europeto America. It appears to thrive only in comparatively coldclimates, and in this country occurs in this form most abun-dantly in the New England States. Under each of the little patches of down there is usuallyfound one large female with her young. When fully grownthe female is nearly one-tenth of an inch long, oval in form,with black head and feet, dusky legs and antennae, and yel-lowish abdomen. She is covered with a white, mealy powder,and has a tuft of white down growing upon the hinder part ofher back, which is easily detached. During the summer theinsects are wingless, and the young are produced alive, butabout the mid
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