280 



PESTS OF ORCHARD AND SMALL FRUITS 



but later the entire leaf is destroyed, except 

 worms are three fourths to one inch long, naked 



Fig. 404. — The Spring Canker-worm. Original. 



moving, they arch the body so as to bring the 

 front. This species may be distin- 

 guished from the similar fall canker- 

 worm by the fact that the latter has 

 an additional pair of rather small pro- 

 legs near the hind end. 



the main veins. The 

 dark green, and some- 

 times rather dis- 

 tinctly striped. 

 They have a pair 

 of prolegs or clasp- 

 ers on the hind 

 end, a single pair 

 a short distance 

 forward of these, 

 but no other legs 

 from that point to 

 the three pairs of 

 true legs near the 

 front end of the 

 body. Thus, in 

 hind end up near the 



Fig. 405. — Adult female of the Spring Can- 

 ker-worm. Enlarged and natural size. Fig. 406. — Work of Canker- 

 Original, worms. Original. 



