. Elementary textbook of economic zoology and entomology. Zoology; Insect pests. 432 ECONOMIC ZOOLOGY AND ENTOMOLOGY The best method of control is to gather the eggs during the winter and destroy them. The larvae seem to be very resistant to poisons, and when the arsenical sprays are used it is necessary to make them very strong. Climbing Cut-worms.—Several species of smooth-bodied cut-worms often climb the trees, eating the foliage or destroying the young fruit. Sometimes these cut-worms go in great X I. FIG. 205.—Green-fruit worms, Xyliiia grotci, at left, and Xylina anten- nata, at right. (
. Elementary textbook of economic zoology and entomology. Zoology; Insect pests. 432 ECONOMIC ZOOLOGY AND ENTOMOLOGY The best method of control is to gather the eggs during the winter and destroy them. The larvae seem to be very resistant to poisons, and when the arsenical sprays are used it is necessary to make them very strong. Climbing Cut-worms.—Several species of smooth-bodied cut-worms often climb the trees, eating the foliage or destroying the young fruit. Sometimes these cut-worms go in great X I. FIG. 205.—Green-fruit worms, Xyliiia grotci, at left, and Xylina anten- nata, at right. (Natural size; after Slingerland.) bands or armies traveling across the country and destroying all the vegetation in their path. The adults, which are moths that usually fly only at night, are mostly grayish or brownish, and are often called owlet-moths on account of the peculiar appear- ance of the eyes and head. About the only successful method of combating cut-worms after they have once gained foothold on the trees is to jar them off and destroy them. Fortunately they are attacked by several natural enemies which generally keep them in control. The Bud-moth (Tmctocera ocellana).—Often the unfolding leaves of fruit trees are tied together with silken webs making. 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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