KEY TO AMERICAN INSECT GALLS 



139 



E^.L.Beutenmuller 



Fig. 141. Diastrophus palls. 1. D. t u r g i d u s 1 Bass. 2. 3- D. kincaidi Gill. 4, 5. Black 

 berry root gall, D. r a d i c u m Bass. (After Beutm., Am.lMus. Nat. Hist.) 



