9\JPA- ■^^R.LIFF 



Fig. 1. Life Cycle of the Apple Maggot. 



Periods during which the species is found in the several 

 stages, under normal conditions, in New Hampshire. 



SUMMARY. 



PAGE 



Historical 9 



Source and Food Plants 11 



The known food plants of the apple maggot are the apple, 

 both wild and cultivated; hybrid crabs; haws; huckle- 

 berries and blueberries 12 



The maggot is probably a native American insect, with 



origin in one or more species of Cratoegus 14 



Distribution and Destructiveness 19 



The distribution of the maggot approximates the eastern or 



humid portion of the Transition Life Zone 19 



In Canada the species is present in certain sections of On- 

 tario, Quebec, New Brunswick and Nova Scotia 20 



