396 OHIO EXPERIMENT STATION: BULLETIN 332 



PLATE XXXIII 



THE WHITE GRUB OR MAY BEETLE 



( Lachnosterna sp.) 



Fig. 1. — Adult beetles, slightly enlarged. 



Fig. 2. — Full grown larva, slightly enlarged. 



Fig. 3. — A young ash grove defoliated by May beetles, Wooster, Ohio, May, 

 1914. Ordinarily the damage is not so severe as shown in this illustration. 



Photograph, W. H. Goodwin. 



