THE HYBLAZA PARASITES. 345 
4. Does the fly on emerging at once pair, and do the 
females soon afterwards lay eggs in the Hyblea 
caterpillars? This is possible, since at the period i 
took the caterpillars they were of all sizes on the 
teak trees. 
How many eggs are laid by each fly ? 
. How many generations in the year are passed through 
; by— 
OV un 
(az) each of the ichneumon flies ? 
(0) the tachnid fly ? 
. Are these parasites plentiful in years of bad defoliation 
by Hyblza caterpillars ? 
Are these parasitic flies present in other parts of India 
where bad defoliating attacks are experienced from 
@yblza. They have at present only been reported 
from Nilumbur as noted above, 
“I 
oe 
Norz.—It should prove easy for those interested to breed out these 
flies by keeping some nearly full-grown Hyblza caterpillars in a hox and 
feeding them till they pupate. The flies will issue from the pupz if the 
caterpillars were parasitised. 
Most of my infected caterpillars died, as as did the parasites inside 
them, owing to the fact that they had to be transported some 2,000 miles up 
north from Nilumbur just at the time the latter were pupating. 
