. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. ATTACKING THE BRANCHES. 241 origin; hence by grafting the more susceptible varieties on these hardier sorts, the ill effects produced by the lice may in some measure be counteracted. The roots recommended to be used as stocks are those of Concord, Clinton, Herbemont, Cun- ningham, Norton's Virginia, Rentz, Cynthiana, and Taylor. The Clinton, one of the varieties recommended, is particularly liable to the attacks of the gall-producing type of Phylloxera, but the lice are seldom found to any great ext
. Insects injurious to fruits. Illustrated with four hundred and forty wood-cuts. Insect pests. ATTACKING THE BRANCHES. 241 origin; hence by grafting the more susceptible varieties on these hardier sorts, the ill effects produced by the lice may in some measure be counteracted. The roots recommended to be used as stocks are those of Concord, Clinton, Herbemont, Cun- ningham, Norton's Virginia, Rentz, Cynthiana, and Taylor. The Clinton, one of the varieties recommended, is particularly liable to the attacks of the gall-producing type of Phylloxera, but the lice are seldom found to any great extent on its roots, and the vine is so vigorous a grower that a slight attack would not produce any perceptible injury. Fig. 248. ATTAOKINa THE BEANOHES. Uo. 126.—The Grrape-vine Bark-louse. Pulvinaria innumerahilis Kathvon. Durinp; the month of June there are sometimes found on the branches of the grape-vine, brown, hemispherical scales, from under one end of which there protrude^ a cotton-like substance, which increases in size until the beginning of July, by which time it has become a mass about four timfe as large as the scale. (See Fig. 248.) This cottony matter contains the eggs of the in- sect, and very soon there issue from it minute, oval, yellowish-white lice, which distribute themselves over the branches, to which they attach themselves, and shortly become stationary, sucking the juices. This species is believed to be the same as the European scale-insect of the vine. These scales are not usually found in any great abundance, and may be readily scraped off with a knife or other suitable instrument, which should be done before the young lice escape. 16. 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. Philadelphia, J. B. Lippincott & Co
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