18 
BULLETIN 643, TT. S. DEPARTMENT OE AGKICULTUKE. 
they are ready for market. Although cantaloupe growing has been 
abandoned practically in Hawaii since the advent of the melon fly, 
cucumbers are grown without protection of any sort. Practically all 
fruits reaching a size fit for salad use show evidences of attack at one 
or more spots, but 
the percentage of 
fruits rendered un- 
marketable is not- 
large enough to 
force the oriental 
growers to cover 
the young fruits, 
although it would 
appear disastrously 
large to American 
market gardeners, 
who place a high 
value on their time. 
During midwinter 
150 out of 153 cu- 
cumbers, ready for 
the market at Moi- 
liili, were found in- 
fested variously. 
All cucurbits grow 
with such rapidity 
in Hawaii that the 
oriental is willing to 
permit the pest to 
destroy fully 50 per 
cent of the fruits 
rather than go to the 
expense of covering 
each fruit as soon as 
or before it sets. To 
prevent wholesale in- 
jun^, all cucurbits 
except cucumbers 
must be covered be- 
fore or just after 
blooming. 
Aside from the 
cucurbits except canta- 
Fig. 17. — Cross section of young pumpkin, showing work 
of larvae of melon fly. Each affected area represents 
the location of a colony of larvee. (Authors' illus- 
tration.) 
fact that the seedlings and vines of all 
loupe and watermelon are attacked but slightly, there is little differ- 
ence in the susceptibility to attack of the 
fruits under 
