. Injurious insects of the orchard, vineyard, field, garden, conservatory, household, storehouse, domestic animals, etc., with remedies for their extermination . e the leaves begin to appear, the eggs aredeposited in a small slit or opening made by the ovipositor ofthe female fly in the surface of the leaf. These are hatchedin about ten days. INSECTS INFESTING THE PEAR TREE. 121 The young caterpillar (Fig. 98) commences to feed by eatinga short track, apparently under the surface of the leaf; iteventually makes an opening in which it feeds until one fourthgrown, or six days old; it then leaves
. Injurious insects of the orchard, vineyard, field, garden, conservatory, household, storehouse, domestic animals, etc., with remedies for their extermination . e the leaves begin to appear, the eggs aredeposited in a small slit or opening made by the ovipositor ofthe female fly in the surface of the leaf. These are hatchedin about ten days. INSECTS INFESTING THE PEAR TREE. 121 The young caterpillar (Fig. 98) commences to feed by eatinga short track, apparently under the surface of the leaf; iteventually makes an opening in which it feeds until one fourthgrown, or six days old; it then leaves this opening and com-mences feeding on the edge of the leaf, and as there are oftenfrom one to eight on a leaf, they move from one leaf toanother until full grown, which is in about twenty-two daysfrom the time they were hatched. When the larva, or cater-piller, ceases to eat, it descends to the earth and crawls belowthe surface and makes a tough, dark-brown oval cocoon. Inthis cocoon it hibernates, in the larval state, until the nextSpring. Caterpillar (larva); length, six lines ; color, green ;head, yellowish-green ; eyes, black ; twenty legs. Fig. Fig. 98.—Pear leaf, caterpillar and 122 INSECTS INFESTING THE PEAR TREE. Fig. 99. Fig. 99. — Pear-leaf Saw-fl}-—colors,black and yellow. Perfect insect ( Fig. 99)—length of body,three and three fourths lines; expanseof wings, about seven lines; color, headand thoiax black, abdomen yellowish,with a black transverse band on the dor-sal half of each segment; wings transpa-rent, wdth a brownish hue. There is, apparently, only one broodeach year. Remedies.—As soon as. the larv« appear, spray as directedin No. 61, or 65; also, see No> 62.
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Keywords: ., bookcentury1800, bookdecade1880, bookidinjuriousins, bookyear1883
