INSECTS AND INSECTICIDES. 



13 



woolly egg-clusters in pruning season has proved very success- 

 ful in combating this pest in certain sections, while in other 



FIG. 9. Tussock Moth, caterpillar. 



b 



Fio. 10. Tussock Moth. 



a. Female moth. ft. Young larva, c. Female pupa. 

 d. male pupa. 



FIG. 11. Tussock 

 Moth, male. 



sections it is held in check by parasites which attack these egg- 

 clusters. In very badly infested orchards spraying can be 

 resorted to, and the arsenate of lead solution will be found a 

 good remedy. 



Tent Caterpillars. These caterpillars are at times very abun- 

 dant and cause a great deal of damage to the foliage of 



Female moth. Larva. 



FIG. 12. Tent Caterpillar (CIMocampa tylvatirci). 



fruit trees. The presence of the caterpillars can easily be 

 detected by the tents or webs which the colony of worms spin 

 in the tops of the trees. Collecting and burning these tents, 



