Midge Galls 



1 Subglobose vein gall on oak, produced by Cecidomyia sp., adult 



unknown ^ ^ ^ a r n., \ 



2 Gall on oak. Of Cmcticornia majalis O. S. (After Thompson) 



3 Oak pill gall, C i n c 1 1 c o r n i a p U u 1 a ? Walsh (After Thompson) 



I Clematis bud gall, C o n t a r . n i a cl e m a 1 1 d i s Felt. (After Thompson) 



5 Grape blister gall, Cecidomyia species. (After Weld) 



6Chokecherry midge, Contarinia virginianiae Felt. (Aftei 



Thompson) ■ r l • V^U rAf+rr 



7 Arrow-wood blister midge, Cystiphoraviburnifolia Felt. (After 



Clarke) 



8 Honey locust pod gall, Dasyneura gleditschiae O. S. (After 



9 LooseSife bud gall, Dasyneura lysimachiae Beutm. (After 



Clarke) 



260 



