Bui. 808, U. S. Dept. of Agriculture. 
Plate VI 
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A 
Jointworm Flies of the Genus Harmolita. 
A, Characteristic galls of H. elymicola in Elymus sp., slightly reduced; B, two types 
of injury to Agropyron sp. by H. atlantica, those to the left being sheath galls and 
the long stems to the right being stem galls, slightly reduced; C, Typical galls of 
the Festuca jointworm (H. festucae), about natural size; D, E, characteristic galls 
of H. elymophthora, enlarged slightly. (Photographs D and E by Mr. C. N. Ainslie.) 
