ORCHARD, GARDEN, AND FIELD INSECTS 133 



FIG. 126 

 THE CANKERWORM 



Treatment. The Clinton grape is most liable 

 to injury from this pest. Hence it is better to 

 grow other more resistant kinds. If the lice 

 disturb the roots, apply carbon disulphide, one 

 part of disulphide to three parts of hot water. 



Cover closely with earth the part treated, to 

 prevent the evaporation of the mixture. 



The Cankerworm is the larva of a moth. 

 Because of its peculiar mode of crawling, by 

 looping its body, it is often called the looping 

 worm or measuring worm (Fig. 127, c). These worms 

 are such greedy eaters that in a short time they can 

 so cut the leaves of an orchard as to give it a scorched 

 appearance. Such an attack practically destroys the 

 crop and does permanent injury to the tree. The 

 worm is green or brown and is striped lengthwise. If the 

 tree is jarred, the worm has a peculiar habit of dropping 



