THE MELON FLY. 



17 



1. Cantaloupe. 



2. Watermelon. 



3. Pumpkin. 



4. Squash. 



5. Gourds. 



1. Eggplant. 



2. Water lemon 



flora sp.). 



1. Sycos sp. 



]. Kohlrabi. 



(Passi- 



CTJLTIVATED. 



Preferred. 



6. Chinese cucumber 



(Momordica sp.). 



7. Chinese melon. 

 S. Chayote. 



9. Cucumber. 



Occasionally infested. 



3. Orange. 



4. Fig. 



5. Papaya. 



10. Tomato. 



11. String beans. 



12. Cowpeas. 



6. Peach. 



7. Mango. 



8. Citrullus (Java). 



WILD. 



2. Momordica sp. 

 Erroneously recorded host fruits. 



2. Cabbage. 3. Peppers. 



CUCURBITACEOUS PLANTS. 



All the cucurbitaceous 

 plants are subject to severe 

 infestation, particularly 

 of the young fruits. 

 Cantaloupes are the most 

 susceptible, since the vines 

 as well as the fruit are 

 attacked badly at all 

 stages of growth, and the 

 fruits do not appear to 

 develop the resistance to 

 attack found among the 

 older watermelons, pump- 

 kins, and squashes. Ordi- 

 narily the cucumber is 

 resistant to attack when 

 very young, although it is 

 rare that cucumbers of- 

 fered for sale in Honolulu 

 do not show some evidence 

 of attack, even when 

 very carefully collected. 

 Cantaloupes and cucum- 

 bers may be used success- 

 fully by the female fly for 

 egg laying up to the time 



Fig. 16. — Various deformities of very young pump- 

 kins caused by infestations started before or just 

 after fertilization of the ovary. These fruits per- 

 sist for a time, owing to calluses developing about 

 points of attack, but they never reach a much 

 larger size and are ultimately destroyed by fungi 

 and secondary attack. (Authors' illustration.) 



