INSECTS Ixjruious TO SHADE TREES. 



77 



Fig. 31. The Maple Pseudococcus : a, the cottony masses covering the 



adult females on leaf ; 6, young of both sexes on bark 



From Howard. U. S. Dept. Agl. 



Remedial Measures. 



When the infested leaves drop to the ground they should 

 IK- regularly raked up and burnt. In the cities and towns 

 where water pressure is available, a solid jet from a hose on 

 the infested trunk will wash out and destroy the Wasll w i th 

 vast majority of the specimens, leaving not hose - 

 (in.iigh to d<> any harm. In winter the tree trunks may be 

 sprayed with one of the niiscible oils like "Scalecide," di- 

 lm< d with ten. parts of water and applied with sufficient force 



