Nature biographies; the lives of some every-day butterflies; moths; grasshoppers and flies . ly a loop of silk to hold the front end of thebody in place, and a flat bunch of silk against the supportto which the hind end is attached. These chrysalids maybe found on fence boards, the sides of houses, barns or sheds, under sticks orstones, in almost anysituation to which theworm may have wan-dered before taking onthe chrysalis the variationsin colour clue to thebackground there isoften a colour variationdue to parasitism. Byputting some of thechrysalids in a glass jaryou are lik
Nature biographies; the lives of some every-day butterflies; moths; grasshoppers and flies . ly a loop of silk to hold the front end of thebody in place, and a flat bunch of silk against the supportto which the hind end is attached. These chrysalids maybe found on fence boards, the sides of houses, barns or sheds, under sticks orstones, in almost anysituation to which theworm may have wan-dered before taking onthe chrysalis the variationsin colour clue to thebackground there isoften a colour variationdue to parasitism. Byputting some of thechrysalids in a glass jaryou are likely to getw^hite butterflies fromthe healthy pupae, andtiny four-winged fliesfrom those infested withparasites. The curious larvae of the sphinx moths go into theground in autumn, soon changing to pup^ that remainin the soil through the winter. By so doing, they es-cape many enemies that would rejoice over such a supplyof food as one of these pupae would furnish. This is truenot only of the species that feed upon herbaceous plants,as in the case of the common tomato w^orm (Fig. 144), 158. Fig. 143. — The Turnus Butterfly. Insects in Winter. but also of those tliat feed upon the leaxes of pupa^ He in hollow cells in the earth without anysis^n of a cocoon or other coverinir.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1901
