INSECTS. 



283 



Oak.leaf Roller Moth (Tortrix viridana).— This 

 moth is the i^arent of caterpillars which in some seasons 

 do an immense deal of mischief to the foliage of oak trees. 

 The moth is sm^ll in size, has light green fore and silvery- 

 grey hind wings. It appears in June, lays its eggs on 

 the leaf buds during the summer, and these hatch out 

 the following spring. The caterpillars are half an inch 

 long, greenish-grey, and have the habit of rolling the 

 leaves round so as to form a cvlinder or tube, in which 



OAK IJOLLER MOTH, 



[Photo: J. G. Blakey. 

 LARY.E AND PUP.E. 



them. 



A destructive pest, the InrvfB of wliicli roll the leaves together and devour 



they feed and remain till they are full grown, then let 

 themselves down to the earth to pupate by a thread. 



Remedies. — Thoroughly drenching the trees with a Soap 

 and Quassia (No. 14), Kerosene (No. 16), or Paris Green 

 (No. 11) preparation, is the only effectual remedy. 



Pine Beetle (Hylurgus piniperda). — This beetle is 

 about half an inch long and of a pitchy colour. Tt makes 



