. Elementary textbook of economic zoology and entomology. Zoology; Insect pests. INSECTS INJURIOUS TO FOREST TREES 507 trained forest rangers and caretakers than by the usual methods of the economic entomologist. The few insects described in the following paragraphs are perhaps the most important of the commoner pests of shade trees, but there are many others of similar habits which may be found by keen-eyed and persevering students. The remedies for these others will be of the same general nature as those recommended for the insects described, although modifications of them may need to be mad
. Elementary textbook of economic zoology and entomology. Zoology; Insect pests. INSECTS INJURIOUS TO FOREST TREES 507 trained forest rangers and caretakers than by the usual methods of the economic entomologist. The few insects described in the following paragraphs are perhaps the most important of the commoner pests of shade trees, but there are many others of similar habits which may be found by keen-eyed and persevering students. The remedies for these others will be of the same general nature as those recommended for the insects described, although modifications of them may need to be made to fit particular cases. Government and state bulletins will give further and more detailed information about the pests briefly described here and also about others likely to be found on the trees. The Gipsy-moth (Port hetriadis par).—One of the very worst of the many shade tree and woodland pests is the gipsy-moth,. FIG. 238.—Gipsy-moth, Port/iclria dispar, adult female. (About 1/4 larger than natural size.) which was introduced into this country from Europe about 1868. Fortunately it spreads slowly and as yet occurs only in the New England states. The federal government and the states concerned are now spending more than a million dollars a year in trying to control this pest. But in spite of all their efforts the insect is gradually widening the boundaries of the infested areas, and other localities may in time suffer from its ravages. The brownish-yellow, slender-bodied, male moth flies readily, but fortunately the large, sluggish female cannot fly, although. 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 Kellogg, Vernon L. (Vernon Lyman), 1867-1937; Doane, Rennie Wilbur, 1871-. New York, H. Holt and company
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