. 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. POTATO PESTS 1729 to break up the breeding places will prac- tically eliminate all possibilities of in- jury. Solanum Root Louse TrifldapMs radicicola Essig General Appearance The apterous females are distinctly globular in shape, and vary from amber to cream-color and often with a fine, white, powdery covering. The winged forms are amber with he
. 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. POTATO PESTS 1729 to break up the breeding places will prac- tically eliminate all possibilities of in- jury. Solanum Root Louse TrifldapMs radicicola Essig General Appearance The apterous females are distinctly globular in shape, and vary from amber to cream-color and often with a fine, white, powdery covering. The winged forms are amber with head and thorax dark. The wings are also dusky. Length, 1 to 2 millimeters. Life History The lice are subterranean in their habits and are evident during the early spring and the entire summer. The winged forms appear in July and August. It has not been determined whether eggs are deposited or not, but so far the the writer has been unable to find any. E. O. Essig Tomato Sphinx. See Tomato Pests. Twelve-Spotted Cucumber Beetle. See Cucum'ber Pests. Western Army Worm. See Beet Pests. Western Potato Flea Beetle Epitrix suhscrinita Lee. A. L. Lovett. This potato flea beetle (see Fig. 1) is one of our very serious insects pests of the potato in the Northwest. The trouble it causes and the total injury it does are hard to estimate. The small black-brown beetles, which jump quickly like a flea when approached, are fairly well known. They eat small irregular holes in the foliage of the potato, tomato and other. crops. From these feeding punctures a fungus spreads. The total leaf surface thus destroyed is considerable, and where the attack is severe the food supply of the developing tubers is materially cut down. The larvae are small, white and thread-like. They occur below ground, feeding on the underground stems of the potato plant and also on the tubers. They give the potatoes a peculiar pimply ap- pearance, which may affect their commer- cial value. There are two generations in a sea
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