THE MEDITERRANEAN FRUIT FLY. 
19 
well-grown though green-colored fruits of the Moa variety, the peel 
of which had become cracked, thus causing a break in nature's normal 
protection to the pulp. Figure 15 is a cross section of a Moa banana, 
showing the tunnels made through the pulp by the larvse, and the 
darkened decayed areas about the tunnels. Adults have been reared 
also from another variety of cooking bananas. 
Because flies have been reared from cooking bananas, it is not 
considered safe to permit their export to the coast, and they have 
been placed on the 
list of quarantined 
fruits by the Federal 
Horticultural Board. 
The Chinese and Blue- 
fields bananas may 
still be exported from 
Hawaii, provided 
they are grown and 
inspected before ship- 
ment in accordance 
with Federal regula- 
tions. So far as is 
known, the " apple" 
and the " ice-cream" 
bananas common in 
Hawaii are not in- 
fested. 
COFFEE. 
Coffee cherries as 
they ripen are favor- 
ite hosts of the Medi- 
terranean fruit fly. 
Fortunately, the 
larvse attack only the 
pulp surrounding the 
beans or seeds, and 
in no way affect the 
value of the latter (see (Original.) 
fig. 11, b). Chemical analyses of beans from infested and uninfested 
cherries, tasting tests of coffee made from similar roasted beans, and 
weighings made of dried beans have failed to reveal any ill effect to 
the beans themselves due to fruit-fly attack. 
The unrestricted development of larvae within coffee cherries, 
however, does bring about certain losses to the grower and mill 
owner. Before parasites were introduced cherries became infested 
Fig. 17.— Sweet bell pepper infested by Mediterranean fruit-fly larvse. 
Note that the upper right-hand portion of fruit has decayed as a 
result of attack. This decay later extends to all parts of the fruit. 
