370 OHIO EXPERIMENT STATION: BULLETIN 332 



PLATE XX 



THE FALL WEBWORM 



(Hyptiantria cunea) 



Fig. 1. — Adult, larvae and pupae, all slightly enlarged. The three illus- 

 trations of the larva indicate the variability in coloring of the insect in this 

 stage. 



After Riley. 



Fig. 2. — The silken web which encloses the cluster of feeding caterpillars. 



Fig. 3. — A sycamore tree practically defoliated by the fall webworm. The 

 discarded, unsightly webs may be seen still attached to the tree. 



