. Insect pests of farm, garden and orchard . low stripe down the back, another along each side, and severalblack spots on each segment. The under side is white with aslight pinkish tinge, with a broad yellow median stripe, and is alsospotted with black. The moth has a wing expanse of about l\inches, is a pale yellowish color, with several brownish spots,varying in size and sometimes forming one or two irregular bandsacross the wings. Ldfe History.—^The eggs (Fig. 351a) are laid in midsummer on * Cymatophora ribearia Fitch. Family Geometridoe. INSECTS INJURIOUS TO CURRANT AND GOOSEBERRY 489 the
. Insect pests of farm, garden and orchard . low stripe down the back, another along each side, and severalblack spots on each segment. The under side is white with aslight pinkish tinge, with a broad yellow median stripe, and is alsospotted with black. The moth has a wing expanse of about l\inches, is a pale yellowish color, with several brownish spots,varying in size and sometimes forming one or two irregular bandsacross the wings. Ldfe History.—^The eggs (Fig. 351a) are laid in midsummer on * Cymatophora ribearia Fitch. Family Geometridoe. INSECTS INJURIOUS TO CURRANT AND GOOSEBERRY 489 the twigs of the infested plants and hatch as the bushes comeinto full leaf the next spring. The caterpillars become fullgrown in three or four weeks, when they pupate just beneaththe surface of the soil, and two or three weeks later themoths emerge. Control.—Hellebore is not as effective as against the saw-flylarvie and as the larvae usually appear before the fruit is setting,they may be better controlled by spraying with arsenicals. When. Fig. 351.—The currant span-worm {Cijmalomorpha riberia P^itch): 1, 2, larvae;3, pupa; a, egg; b, eggs on twig; c, moth—a, much enlarged, othersnatural size. (After Saunders.) the caterpillars are disturbed they drop from the foliage, lettingthemselves down by a silken thread and remaining suspended inmid-air until danger is over, when they reascend the habit may be utilized for their destruction by jarring thebush so that they will drop, and then passing a forked stick aroundit so that all the threads may be caught and the caterpillars maybe drawn out in groups and crushed with the foot. 490 INSECT PESTS OF FARM, GARDEN AND ORCHARD The Currant-fly * Currants and gooseberries sometimes turn red and dro]) pre-maturely, due to the injury of small maggots which may be foundwithin them. The insect has been troublesome in Maine and issometimes a serious pest in Colorado. It is a native insect and isprobably generally distributedth
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