Bui. 808, U. S. Dept. of Agriculture. 



Plate V. 



JoiNTWORM Flies of the Genus Harmolita. 



A, Characteristic gall of the rye jointworm (H. secalis) in rye (about natural size); B, larvse of 

 H. maculata in a cheat stem (about natural size); C, galls of H. elymivora in Elymus sp. (about 

 natural size). 



