PLATE 37.— LIFE HISTORY OF ELM-LEAF BEETLE. 



Adult beetles eating holes through leaves after emerging from their hibernating quarters in the 

 spring. 2. Egg mass on under side of leaf. 3. Larvae feeding on under side of leaves, giving 

 them a skeletonized appearance (1, 2, and 3 about -H natural size). 4. The curling of the 

 foliage of the elm as a result of the feeding of the larvse. 5. The contrast between sprayed 

 and unsprayed elms attacked by the elm-leaf beetle. The tree on the left was sprayed with 

 arsenate of lead May 20. 1909. The tree to the right, about 25 feet away, was not sprayed. 

 View taken August 10, 1909. 



