. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. INSECTS INJURIOUS TO THE PEAR. ATTAOKITO THE TEUNK. No. 65.—The Pear-tree Borer. JSgeria pyri (Harris). This IS a whitish grub, resembling that of the peach-tree borer, but much smaller, which feeds chiefly upon the inner layers of the bark of the pear-tree. Its presence may be (Jetected from its habit of throwing out castings resembling fine sawdust, which are readily seen upon the bark of the tree. Before the larva changes to a chrysalis it eats a passage through the bark, leaving only the thinnes
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. INSECTS INJURIOUS TO THE PEAR. ATTAOKITO THE TEUNK. No. 65.—The Pear-tree Borer. JSgeria pyri (Harris). This IS a whitish grub, resembling that of the peach-tree borer, but much smaller, which feeds chiefly upon the inner layers of the bark of the pear-tree. Its presence may be (Jetected from its habit of throwing out castings resembling fine sawdust, which are readily seen upon the bark of the tree. Before the larva changes to a chrysalis it eats a passage through the bark, leaving only the thinnest possible covering unbroken. Retiring towards the interior, it changes to a chrysalis, and late in the summer the chrysalis wriggles itself forward, and, pushing against the paper-like covering which conceals its place of retreat, ruptures it, and, projecting itself from the orifice, the moth soon bursts its prison-house and escapes, leaving nothing but the empty skin behind it. The moth (Fig. 146) is somewhat like a small wasp, of a purplish or bliiish-black color, with three golden-yellow stripes on its abdomen; the edges of the collar. Fig. 146. the shoulder-covers, and the fan-shaped brush on the tail are of the same golden-yellow hue. The wings, which, when expanded, measure more than half an inch across, are clear and glass-like, with their veins and fringes purplish black, and across the tips of the fore wings is a broad dark band with a coppery lustre. The under side is pale yellow. Remedies,—The trees should be examined in the spring, and if evidences of the presence of these larvae are found, they should be searched for and destroyed. As a preventive measure, paint the trees with the mixture of soft-soap and 140. 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 Saunders, William, 1836-1914. Phi
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1883
