Nature biographies; the lives of some every-day butterflies; moths; grasshoppers and flies . and thus reaching the hmit of its food-supply. It thenspun a cocoon around itself, the outside of the cocoonbeing consequently covered by the skin of the late lower part of the skin generally splits apart longi- tudinally so that I the cocoon rests|_ upon and is at-tached to the this cocoonthe maggot changes. _^ to a pupa, and a y*, little later it again chano^es to an adultfour-winoed ichneu-mon-fly, which iscalled by entomolo-gists Linineria fti-gifiva. In choosing itsvictims thi
Nature biographies; the lives of some every-day butterflies; moths; grasshoppers and flies . and thus reaching the hmit of its food-supply. It thenspun a cocoon around itself, the outside of the cocoonbeing consequently covered by the skin of the late lower part of the skin generally splits apart longi- tudinally so that I the cocoon rests|_ upon and is at-tached to the this cocoonthe maggot changes. _^ to a pupa, and a y*, little later it again chano^es to an adultfour-winoed ichneu-mon-fly, which iscalled by entomolo-gists Linineria fti-gifiva. In choosing itsvictims this Limne-ria by no means con-fines itself to thesered-humped applecaterpillars. Earlyin the season it verycommonly attacksyoung Americantent caterpillars, inthe empty skin of which it makes its cocoon in thesame manner, while later in the season it attacks thelarvae of the fall web-worm and various other seems to prefer those species that live together incolonies. 12 A. I Fig. 120. — Colony of lo Caterpillars upon a Com-pound Leaf. Studies of Insect Parasites. The colonies of the larvae of the lo moth are alsoattacked by this parasite, notwithstanding the spiny cov-ering of the caterpillars. These lo larvae feed upon theleaves of quite a variety of trees, shrubs, and herbaceousplants. The larvae go to and from their feeding places insingle-file processions. Whennot feeding they rest togetheron the lower side of a leaf ingroups of a dozen or habit is well illustratedin Figure 120, which showsa compound leaf on which thecaterpillars have been feeding,while the colony has divideditself for resting into two com-panies of nearly equal numbersthat have stationed themselveson two of the whole leafletsthat remain. In Figure 121, asimilar colony is shown, largersize, upon an apple leaf. The habit of thus congregat-ing is probably a help in pre-venting the attacks of birds,especially in the case of suchspiny species as these lo larvae. But it is a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1901
