INSECTS. 277 



the branches entirel}' of leaves. The moth is a fairly large 

 one, has fore wings of i^urplish-grey with a buff patch at 

 the tips, and whitish hind wings. It lays its eggs in June 

 in groups on the upper sides of the leaves, and the cater- 

 pillars hatch in about fourteen days. When full grown 

 they measure nearly 2in. in length, are furnished with 

 silky hairs, and have yellow bodies, lined with black and 

 orange. On reaching maturity they descend to the earth 



OAK APPLE " GALLS 



Formed by the larvae of a midge (Teras terminals 

 the shoots. 



[Photo: H 

 ON OAK. 



piinctiirin 



\. Smi 



the rind of 



to change into pupiie, emerging as moths the following 

 June. 



Eemedies.— (1) Spread cloths or sheets under infested 

 trees, and vigorously shake the latter; then the caterpillars 

 will drop off and be easily caught. (2) Spraying the trees 

 in July with a Soap and Quassia solution (No. 14) will get 

 rid of them also. 



Elm-bark Beetle (Scolytus destructor).— The beetles 

 and larva? do injury to the bark of the elm similar to that 



