Midge Galls 



1 White snake root flower buds from which was reared Lestodiplosi^ 



eupatorii Felt. 



2 Gall of Crataegus leaf from which was reared Lestodiplosis 



crataegifolia Felt. This midge is probably predaceous. (After 

 Thompson) 



3 Gall on Crataegus leaf from which was reared Lestodiplosis cra- 



taegifolia Felt. (After Thompson) 



4 Cherry leaf from which was reared Mycodiplosis cerasifolia 



Felt. (After Thompson) 



5 Beaked willow gall, Phytophaga rigidae O. S. 



6 Elm leaves deformed by Phytophaga ulmi Beutm. (After Thompson) 



7 Willow cabbage gall, Rhabdophaga brassicoides Walsh. 



8 Willow twig showing deformation, provisionally referred to Rhabdo- 



phaga globosa Felt . 



9 Nodule willow gall, Rhabdophaga nodula Walsh. 



264 



