CHAPTER VI 



How Insects Transform 



All insects, except two primitive groups of little importance, go 

 through distinct changes of form in the Ufe round of the individual. 

 These changes constitute what is known as metamorphosis. 



Fig. 16. — Illustrating complete metamorphosis. Egg, larva or caterpillar, 

 cocoon and pupa, and adult of the Rusty Tussock Moth, Hejnerocampa an- 

 tiqua Linn. Original. 



Thus, the cabbage butterfly lays an egg. From the egg hatches a 

 tiny " worm " or larva. The larva grows, and in due time changes 



19 



