1 8 Irregular blister gall of Asteromyia on Aster laevis, adult 



unknown 



19 Blister leaf gall of Asteromyia laeviana Felt on 



Aster laevis 



20 Blister leaf gall provisionally identified as that of Aster- 



omyia rubra Felt, a rather lighter type 



2 1 Gall of Rhopalomyia clarkeae Felt on S o 1 i d a g o 



r u g s a , natural size 

 2ifl Same gall, enlarged 



217 



