KEY TO AMERICAN INSECT GALLS 



99 



ELBeute n m u \ier 



Pig- 93- Oak apples. 1-4. Amphibolips melanocera Ashm. s, 6. Scrub oak gall, 

 A. ilicjfoliae Bass. 7-10. A. cinerea Ashm. (After Beutm., Am. Mus. Nat. Hist.) 



