a 



b ^ c 



Tussock moth (Xotohphus) 



a 



b c 



Hawk moth {Hyloiats kalmiae) 



a 



h c 



Yellow swallowtail, or tiger butterfly {I'apilio tnriius) 



a 



Fritillary {A rgynttis) 



Fig. 117. Development of Lepidoptera (moths and butterflies) 



The egg, a. hatches into a wormlike larva, or caterpillar, b. The lar\-a feeds voraciously 

 and grows very rapidly. On reaching full growth it curls up, secretes a hard covering, 

 and goes to sleep. In this resting stage, or fiipa, c, it may remain for months, giving no 

 outward sign of life whatever. At the end of the resting period the cover of the pupa 

 breaks open, and out crawls the fully formed insect, d. In some species the two sexes 

 have distinct forms or color patterns in the adult stage. In the tussock moth the adult 

 female is a sluggish, wingless animal. (All about % size) 



