Midge Galls 



1 Ash leaves inhabited by Arthrocnodax sambucifolia Felt, the 



deformation probably produced by a mite, Eriophyes sp. (After 

 Thompson) 



2 Cone-flower gall, Asphondylia conspicua O. S. 



3 Sunflower purse gall, Asphondylia globulus O. S. (After Weld) 



4 Adherent capsule gall on Solidago, inhabited by the nun midge, Asphon- 



dylia monacha O. S. and Camptoneuromyia adhesa 

 Felt 



5 Gall of nun midge, Asphondylia monacha O. S., on narrow-leaved 



goldenrod 



6 Cactus infested by Asphondylia opuntiae Felt. (After Essig) 



7 Gall ofAsteromyia sp. on lonactis lineariifolius. (After 



Clarke) 



8 Blister gall of PCaryomyia species on hickory 



9 Gall of spruce bud midge, Rhabdophaga swainei Felt. (After 



Swaine) 



