Midge galls 

 A twig swelling on Salix provisionally referred to Rhabdo- 



phaga nodula Walsh 

 Twig swelling on Salix provisionally referred to the genus Rhab- 



dophaga, adult unknown 

 Gall of Cystiphora viburnifolia Felt on Vibur- 

 num dentatum. Photo by Miss Cora H. Clarke 

 Gall of Dasyneura gleditschiae Felt on honey locust. 

 Photo by Miss Cora H. Clarke 



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