122 



FttniT INSECTS 





X 



^i 



i 



Fig. 132. 



Cocoons of the forest tent-caterpillar. 



Methods of control. 



In the forest little can be done to fight this insect. As a 



shade tree pest in villages and 

 cities spraying with arsenate of 

 lead, 8 pounds to 100 gallons of 

 water, while the larvae are still 

 small, would be effective. The 

 cocoons should be collected when- 

 ever found and placed in a box 

 covered with -^ inch mesh screen, 

 which will permit the escape of 

 the parasites while retaining the 

 moths. In some towns children 

 have been hired to collect the 

 Fig. 133. -Female moth of the cocooiis at ten cents a quart with 



forest tent-caterpillar. excellent results. 



