. Insect pests of farm, garden and orchard . the leaves oftheyoungcorn, and hatchin from seven to ten eggs are flat, scale-like, and placed in rowsof from two to twenty-five, slightly overlappingeach other. They arcVioo inch long, by twothirds as wide, at first acreamy-white, but grad-ually becoming a reddishbrown. The young larvabores into the stalk, oftendestroying the bud,and then at or near theground, where it burrowsupward in the pith,seldom damaging thestalk above the thirdjoint. As the Ijorersgrow they become quiteactive and frequentlyleave and re-enter thestalk, thus making se
. Insect pests of farm, garden and orchard . the leaves oftheyoungcorn, and hatchin from seven to ten eggs are flat, scale-like, and placed in rowsof from two to twenty-five, slightly overlappingeach other. They arcVioo inch long, by twothirds as wide, at first acreamy-white, but grad-ually becoming a reddishbrown. The young larvabores into the stalk, oftendestroying the bud,and then at or near theground, where it burrowsupward in the pith,seldom damaging thestalk above the thirdjoint. As the Ijorersgrow they become quiteactive and frequentlyleave and re-enter thestalk, thus making sev-eral holes. The caterpil-lars become full grownin twenty to thirtydays, and are about one inch long, dirty-white, thickly coveredwith dark spots, each of which bears a short, dark mature caterpillar bores outward to the surface of the stalk,making a hole for the escape of the adult moth, which it coverswith silk, and then transforms to a pupa in its burrow. Thisoccurs during July, and the moths of the second generation emerge. Fig. 126.—Work of the larger com stalk-borer:a, general appearance of stalk infested bythe early generation of borers; b, samecut open to show pupa and larval burrow.(After Howard, U. S. Dept. Agr.) 174 INSECT PESTS OF FARM, GARDEN AND ORCHARD in seven to ten days. The second brood of larvae feed on the old
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
