EXPLANATION OF PLATE 40. 



Drawn in colors by ELLA M. PALMER. 



1. Showing the feeding and spinning habits of gypsy moth cat- 



erpillars of different ages. The bark on the lower part 

 of the apple twig has been eaten by the young cater- 

 pillars early in the season. 



2. Showing the method of feeding upon a young growing shoot 



of white pine (Pinus strobus} . 



3. Red oak {Quercus rubra) leaf attacked by a nearly full- 



grown gypsy moth caterpillar. 



