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, ranging 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. 



