THE MELON FLY. 



19 



Hawaiian conditions. Inasmuch as the fly has been permitted to 

 increase unchecked since its introduction, it has become so abundant 

 that slight differences in inherent resistance to attack are not evident 



Pig. 18. — Damage to cucumbers by larvae of melon 



(Authors' illustration.) 



among host fruits growing in the field. The infestation is ex- 

 cessive in all unprotected fruits. If by chance pumpkins, squashes, 

 and watermelons escape infestation until they are from 4 to 6 inches 



