Starting young orchards . 237 are covered with long, yellowish hairs. They grow rapidly, andwhen ready to pupate seek some sheltered place and constructfragile cocoons of web and hairs. The moths are nocturnal intheir habits. They vary considerably in color, some being purewhite and others white with black spots on their wings. Two broods of the caterpillars appear in a single season;one in the spring and the other in the fall. The fall brood isusually much more numerous and destructive. The caterpillarsattack a great variety of trees and shrubs, but seem to be especi-ally fond of the leaves o
Starting young orchards . 237 are covered with long, yellowish hairs. They grow rapidly, andwhen ready to pupate seek some sheltered place and constructfragile cocoons of web and hairs. The moths are nocturnal intheir habits. They vary considerably in color, some being purewhite and others white with black spots on their wings. Two broods of the caterpillars appear in a single season;one in the spring and the other in the fall. The fall brood isusually much more numerous and destructive. The caterpillarsattack a great variety of trees and shrubs, but seem to be especi-ally fond of the leaves of apple, pear and quince. In some sections of this state there is a midsummer broodwhich feeds almost exclusively on the leaves of the sour-gumor sorrel-tree, Oxydendrum arhoreum. This seasonal formproduces but one generation of caterpillars annually. Webworms, as well as tent-caterpillars, are likely to be ex-cessively abundant for a period of a few years and then becomeso reduced in numbers, by parasites and other natur
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Keywords: ., bookcentury1900, bookdecade1900, bookidstartingyoungorc116unse
