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 
Fig. 18. — Damage to cucumbers by larva? of melon fly. (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 
