across the wings. The adult fly appears about the first of July and 

 commences to lay its eggs on all parts of the apple, the cheek how- 

 ever being preferred. As the flies emerge at all times between the 

 first of July and the last of September, the egg laying continues 

 through the same period, and the fruit in which the eggs are laid 

 may be an early or a late variety according to the time of emergence 

 of the fly. Each female lays on the average from 300 to 400 eggs ; 

 the fly first puncturing the skin of the apple with her sharp ovipos- 

 itor, generally on the shady side, as the skin is not apt to be tough 

 upon that side, then in this puncture a single egg is deposited. 



The eggs hatch in four or five days and the young greenish white 

 larvae begin their feeding. They burrow in all directions through 



Apple showing work of the maggot. 



the apple by means of two black curved hooks which are situated 

 just above the mouth. By a vertical motion of the head they rasp 

 the fruit with these hooks and suck up the juices thus liberated. 

 While the larvae are small and the fruit is still growing, the tunnels 

 which they make largely heal, but when they grow larger and the 

 fruit approaches maturity the tunnels turn brown thus showing the 

 presence of the maggot. "Finally they involve the whole fruit ren- 

 dering it a worthless mass of disgusting corruption held together by 

 the peel." 



