KEY TO AMERICAN INSECT GALLS 



139 



ELBautenmuller 



Fig. 141. Diastrophus galls, i. D. tfu r g i d u s' Bass. 2, 3- D. k i n c a i d i Gill. 4. S- Black 

 berry root gall, D. r a d i,'c ujin Bass. (After Beutm., Am. Mus. Nat. Hist.) . , 



