Midge Galls 



1 Subglobose vein gall on oak, produced by C e c i d o m y i a sp., adult 



unknown 



2 Gall on oak, of Cincticornia majalis O. S. (After Thompson) 



3 Oak pill gall, Cincticornia pilula? Walsh. (After Thompson) 



4 Clematis bud gall, Contarinia clematidis Felt. (After Thompson) 



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



6 Chokecherry midge, Contarinia virginianiae Felt. (After 



Thompson) 



7 Arrow-wood blister midge, Cystiphora viburnifolia Felt. (After 



Clarke) 



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



Clarke) 



9 Loosestrife bud gall, Dasyneura lysimachiae Beutm. (After 



Clarke) 



260 



