CHAPTER VI 
How Insects TRANSFORM 
ALL insects, except two primitive groups of little importance, go 
through distinet changes of form in the life round of the individual. 
These changes constitute what is known as metamorphosis. 
Fic. 16.— Illustrating complete metamorphosis. Egg, larva or caterpillar, 
cocoon and pupa, and adult of the Rusty Tussock Moth, Hemerocampa 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 
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