86 SUMMARY OF THE REPORT ON THE POMELOE MOTH. 
and lay their eggs in the pith and pulp, with the result that 
large rotten patches spread from the entrance and exit holes. 
These insects are two or three species of flies, and a small 
brown beetle, all of which are attracted by any decaying fruit. 
PREVENTIVE MEASURES. 
The life history of the pomeloe moth shows that there is - 
only a period of its existence when there is any hope of destroy- 
ing it in useful numbers, and that is when it is in the cater- 
pillar stage inside the fruit. The eggs are small and so like 
‘the oil cells on which they are laid, that without a lens it is’ 
difficult to see them; inthe pupa state, which is passed be- 
neath the ground, they-are well out of reach, and in the per- 
fect stage, being strictly nocturnal and very inconspicuous, 
there would be little chance of doing any good. 
The only suggestion that I can make is to destroy all fruit 
that is seen to be inhabited by the caterpillars, or which falls 
from the trees. The destruction of the fruit which falls is of 
"importance not only as a means of killing the insects contain- 
ed in it, but also as preventing its serving for the rearing of 
-another brood. 
- As the eggs seem to be laid only on the fruit itself, it would 
appear that if the young fruits are put into bags, that they 
would have a chance of arriving at maturity. 
I am inclined to think that the wild species of citrus, 
known by the native name of dzmau kerbau, and which is 
apparently nearly allied to the pomeloe, c7trus decumana, is 
the natural food of these caterpillars, as it is a fairly common 
tree in the jungles of some parts of Pérak. 
L. WRAY, Jr. 
Curator, Pévak Museum. 
