1918 



ENTOMOLOGICAL SOCIETY. 



39 



Five kinds of control measures were tested, but only one proved at all 

 satisfactory, namely dusting with Paris green mixed with 20 times or more its 

 bulk of air slaked or hydrated lime. Any other fine, moderately heavy substance 

 such as land plaster should do as well as the lime. I thought that possibly the 



Zebra caterpillar and moth. 



poison bran might work, though the feeding, or rather the resting habit of 

 remaining on the leaf except in wet weather, made it dou;btful whether they 

 would ever seek or find the bran. The result showed that while a few did come 

 in contact with it and died, about 90 per cent, did not. 



Codling Moth (Carpocapsd pomonella). 



A remarkable thing about this insect this year was the great number of side 

 injuries it caused all over the Province. This was especially noteworthy in 

 Niagara, because most of the side injuries there are ordinarily caused by the 

 second brood and are made during August and September, but this year about 



Dark castings at calyx end, 

 showing where Codling Moth 

 larva usually enters the apple. 



Adult Codling Moths, natural size. 

 land.) 



(After Slinger- 



90 per cent, of these were to be seen by about the first of August. I have notes 

 on this subject made on August 4th and again on September 15th and October 

 20th, and the estimate of the percentage of injured fruit on the first date is 

 almost the same as on the last. This shows that it was the first and not the 



