410 OHIO EXPERIMENT STATION: BULLETIN 332 



PLATE XL 



WILLOW AND COTTONWOOD LEAP BEETLES 



Fig. 1. — The Spotted Willow Leaf Beetle (Lina interrupta). Three beetles 

 showing the extreme variability of the markings. 



After Riley. 



Fig. 2. — The Cottonwood Leaf Beetle (Lina scripta). Like the preceding, 

 this beetle varies greatly in its markings, I'anging from almost pure gold to 

 almost black. 



After Riley. 



Fig. 3. — Clusters of pupae of the spotted willow leaf beetle attached to the 

 mutilated leaves of willow. 



Fig. 4. — Willows almost completely defoliated by the spotted willow leaf 

 beetle at Wooster, Ohio. 



