APPLE INSECTS 



13 



the fore wing and a pencil of black hairs on the upper surface 

 of the hind wing. The moths continue to emerge for a period 

 of several weeks, but the majority appear about a week after 

 the petals fall from the apple blossoms, the exact time depend- 

 ing on the character of the sc^ason. If the weather is warm, 

 egg-laying begins in 

 from 3 to 5 days, but 

 if it is cold, the moths 

 may remain inactive 

 for a long period. The 

 average life of the moth 

 is about 10 days, and 

 each female lays from 

 30 to over 100 eggs. 



The glistening, flat, 

 oval, scale-like eggs 

 (Fig. 9) of the spring generation are laid mostly on the upper 

 and under surfaces of the leaves, although a few may be found 

 on the fruit and branches. The egg is about oV inch in diameter, 



Fkj. 9. 



Two viows of the codli 

 shell (X22 and X 7). 



IH.th 



Fig. 10. 



Newly hatched codliu-moth larva (X -44). 



or about half the size of a pinhead. The egg-laying period 

 extends over several weeks, as is the case with the emergence of 

 the moths, but the majority are laid about two weeks after the 

 falling of the petals. The spring brood eggs hatch in 6 to 10 



