. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. APPLE PESTS 527 this aphid give birth to both winged and wingless forms. After the third brood no winged generations appear. All broods after the first are viviparous fe- males, that is, they give birth to living young. Each "stem mother" gives birth to about fifty at the rate of eight to ten per day, each new generation coming to matur
. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. APPLE PESTS 527 this aphid give birth to both winged and wingless forms. After the third brood no winged generations appear. All broods after the first are viviparous fe- males, that is, they give birth to living young. Each "stem mother" gives birth to about fifty at the rate of eight to ten per day, each new generation coming to maturity in about ten days or less. All this time no males have been present in the colony but some appear in the last brood in the fall and with this genera- tion eggs are produced which preserve the species over winter. Control For remedies see end of general article on aphids.—Ed. Oreen Fruit Worm or Green Apple Worm Xylena sp. The green fruit worm is a yellowish green, naked caterpillar, which eats into the sides of the small green apple, the results of which are shown in the cut. It also eats the leaves. When fully grown it is nearly an inch and a half long. Numerous reports from the Bitter Root valley indicate that considerable damage is done by them there. The caterpillars often make only small openings in the skin of the young apples, but instead of healing smoothly these wounds form a rusty or corky area, which has often been mistaken for the true apple scab by per- sons who have not seen the latter. Sim- ilar injury is sometimes done to the pear. Other Food Plants Besides the apple and the pear a con- siderable number of other plants are fed upon by this insect, including peach, plum, quince, currant, oak, wild cherry, box elder and rose. It is probable that other plants, at present unknown, are in- cluded in the diet of these caterpillars. With this list of food plants, it is appar- ent that we cannot hope to ever approach eradication and that our efforts should be dire
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