F-519925-6 
FIGURE 36.—Evidence of nitidulid attacks on oak: A, scars of overgrown 
attacks; B, pockets in the wood beneath scars shown on A. 
insects in eastern United States are discussed. Stehr (689) pub- 
lished keys to the identification of species occurring in Minnesota. 
The two-spotted lady beetle, Adalia bipunctata (L.), an intro- 
duced species, is an important predator of the pine needle, jun- 
iper, beech, and terrapin scales in the Northern States. Adults are 
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