S4 



FRUIT INSECTS 



which has been aptly Hkened to a grain of wheat. In New 

 York, at least, there is a partial second brood of flies appearing 

 in September. 



Remedial measures. 



As the eggs are inserted directly into the pulp beneath 

 the skin of the fruit, and as the maggots never leave 

 the apple until full-grown, it is impossible to kill them 



Vm. ."is. — Apples infested with apple maggot beginning to decay. 



with any poison or contact spray. The flies, however, can be 

 readily destroyed by having the fruit and leaves covered with 

 an arsenate of lead spray at the time of their emergence in early 

 July. As stated above, the flies do not begin oviposition until 

 three or four weeks after emergence ; during this time they feed 

 considerably on the waxy covering of the fruit and lap up drops 

 of moisture from the fruit and foliage. Experiments in New 

 York have shown that if the trees are sprayed the first week in 



