Apple and Thorn Skeletonizer 
Hemerophila pariana Clerck 
Work on apple. The left-hand leaf shows rather serious injury 
and rolling on the right-hand side, the middle leaf rather general 
injury and rolling on both sides and the right-hand leaf less marked 
injury with some rolling and two cocoons near the tip of the leaf. 
(Author’s illustration from Cornell University Extension Bulletin 27) 
210 
