Borers 143 



feed on the leaves and maturing fruits, sometimes making 

 quite large holes in the fruit where they make frequent 

 visits to feed. With the coming of cold weather these 

 adults hide under bits of rubbish or in the grass, where 

 they find protection during their period of hibernation. 



This insect is one of the most difficult to combat of the 

 many that attack fruit. This is so because of its feeding 

 habits and general life history. One means which is quite 

 often advised as a means of control is to jar the infested 

 trees. The insects drop from the trees when disturbed, 

 and may be caught on sheets and destroyed. 



Cultivation during mid-summer is a method of dispos- 

 ing of large numbers, as when done while the larvae are in 

 the pupal stage their pupal cells will be destroyed and the 

 larvae killed by the exposure to the light and attacks of 

 predaceous insects. 



Recent experiments have shown that spraying trees 

 with arsenate of. lead is a very effective means of con- 

 trolling this insect. The methods used in combatting the 

 codling moth are such as to keep the curculio in check, 

 and it has been the universal experience that sprays applied 

 at high pressure are much more efficient than those ap- 

 plied as a mist at low pressure. Even when controlled in 

 the most efficient manner now known it is not possible to 

 destroy as great a percentage of these insects as it is of 

 codling moth. 



Apple Curculio 



The habits of this insect are quite similar to those of 

 the plum curculio, and means of controlling the latter will 

 prove quite as effective. 



Borers 



Flat headed and round headed borers are both found 

 in the trunks of apple trees, working under the bark and 

 into the wood of the trees, usually near the ground. They 

 cannot be controlled by spraying, although lime-sulphur 

 solution at high pressure to the trunks will aid in reducing 



