188 



AGRICULTURE ON THE PACIFIC SLOPE 



The active caterpillar or 

 worm is called a larva. 

 While it is resting and 

 changing into a moth (or 

 butterfly), it is called a 

 pupa. Figure 101 shows a 

 pupa which has no cocoon. 

 Figure 98 shows a cocoon 

 inside of which was a pupa 

 FIG. 100. Eggs of a California which has just become a 



oak caterpillar. (Enlarged.) 



large moth. 



A moth or butterfly passes through four stages: 

 (1) egg, (2) larva (caterpillar or worm), in which stage 

 it crawls about and gorges itself 

 with food, (3) pupa (with or 

 without cocoon), in which stage 

 it rests and might be thought to 

 be dead, (4) winged insect (moth 

 or butterfly). 



The codling moth. If we put some 

 young wormy apples into a fruit jar, 

 we shall after a time see the worms 

 come out and make cocoons. Later 

 we shall see that out of these cocoons 

 come moths which are known as 

 codling moths. They lay their eggs 

 in the orchards, and the first worms 

 which hatch out in the spring enter 



FIG. 101. Pupa of to- 



the apple blossoms and feed awhile in ma to sphinx moth. 



