. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. ATTACKING THE LEAVES. 263 Fig. 272. with black dots and a polished surface. When young, the larva is paler, with less distinct markings; it feeds on the under side, of the leaf, and when alarmed can let itself down to the ground by a silken thread, regaining its position by the same thread when the danger is past. When nearly full grown, it sometimes con- ceals itself during the daytime within a folded leaf. Before effecting its next <}hange, it moulds for itself an â earthen cell, upon or just b
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. ATTACKING THE LEAVES. 263 Fig. 272. with black dots and a polished surface. When young, the larva is paler, with less distinct markings; it feeds on the under side, of the leaf, and when alarmed can let itself down to the ground by a silken thread, regaining its position by the same thread when the danger is past. When nearly full grown, it sometimes con- ceals itself during the daytime within a folded leaf. Before effecting its next <}hange, it moulds for itself an â earthen cell, upon or just below the surface, which is not lined with silk, and within this enclosure is transformed into a brown chrysalis, from which, in the early brood, the moth â escapes in a few days. There are usually two broods each year, the moths appearing on the wing in May and August, the caterpillars in June and July and in September. The moth is shown ate in the figure. It is a very beautiful -creature, of a deep blue-black color, with two large pale-yellow spots on each of the front wings, and two white spots on each of the hind wings. In the figure the female moth is repre- sented ; the male has the spots on the wings proportionately larger, and a conspicuous white mark along the tip of the abdomen. The shoulder-covers are yellow, and the legs partly orange. The wings, when spread, measure from an inch to an inch and a quarter or more across. This insect is very generally distributed, being found in most portions of the United States and Canada. Where the larva proves destructive, it may be subdued by syringing the foliage with Paris-green and water, in the proportion of a teaspoonful to two gallons, or powdered hellebore and water, in the proportion of one ounce to two 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 origin
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherphila, bookyear1883
