364 OHIO EXPERIMENT STATION: BULLETIN 332 



PLATE XVII 



THE WHITE MAEKED TUSSOCK MOTH 



{Hemcrocampa leucostigma) 



Fig. 1. — A full-grown larva about twice natural size. This illustration 

 shows very plainly the three pencils of long black hairs and the sparse black 

 hairs intermingled with the white tufts on the sides of the body. Note also 

 the insert in Fig. 2. The four white tussocks on the back which do not show 

 so plainly in Fig. 1, are shown more plainly here. 



Fig.2. — A cluster of cocoons in a cavity in the trunk of a small tree. 



Fig. 3. — A large willow tree showing a profuse infestation of cocoons and 



egg-masses of the tussock moth. 



