Insects injurious to fruits . location in which topass the chrysalis state. It frequently bores into decayingAvood, and is fond of taking refuge in corn-cobs; it is alsosaid to burrow under ground sometimes. In confinement itbores readily into pieces of cork, excavating with its jaws achamber but little larger than the chrysalis which is to restin it, and when finished the chamber is provided with a capor cover composed of minute fragn)ents of cork united by aglutinous secretion. On lifting this lid, there will be seen adark-brown chrysalis, about seven-tenths of an inch the mot
Insects injurious to fruits . location in which topass the chrysalis state. It frequently bores into decayingAvood, and is fond of taking refuge in corn-cobs; it is alsosaid to burrow under ground sometimes. In confinement itbores readily into pieces of cork, excavating with its jaws achamber but little larger than the chrysalis which is to restin it, and when finished the chamber is provided with a capor cover composed of minute fragn)ents of cork united by aglutinous secretion. On lifting this lid, there will be seen adark-brown chrysalis, about seven-tenths of an inch the moth escapes from the chrysalis late in thesame season, but commonly it remains in this condition untilthe following spring. This insect is subject to the attacks of a two-winged j)ara-site, a species of Tachina, not unlike the common house-fly inappearance. (See Fig. 270, which shows the insect in its threestages of larva, pupa, and fly; also the anterior segments of» caterpillar, with eggs in position.) This parasite is also. ATTACKING THE LEAVES. 261 found on the army-worm and several other caterpillars. Itis ab< ut a quarter of an inch long, with a white face, large,reddish eyes, a dark, hairy body,four dark lines down the thorax,and patches of a grayish shadealong the sides of the parent fly deposits her eggs onthe back of the caterpillar, usuallya short distance behind the head, se-curely fastened by a glutinous sub-stance secreted with them. Fromthese hatch tiny grubs, which eat their way into the bodyof the caterpillar, feed upon its substance, and finally de-stroy it, the grubs, when mature, escaping from the body oftheir victim and changing to oval, smooth, dark-brown a large proportion of the caterpillars are infested bythis friendly parasite; otherwise they would soon become asource of much annoyance to grape-growers. Where artificial remedies are required, the vines may besyringed with hellebore and water or Paris-green and water,as direc
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Keywords: ., bookcentury1900, bookdecade1900, bookidin, booksubjectinsectpests
