KEY TO AMERICAN INSECT GALLS 



195 



Fusiform, stemmed, red-marked, green gall, length 13 to 14 mm. Felt '151, 

 p. 262 



Itonid. Goldenrod stemmed gall, Rhopalomj'ia pedicellata 



Felt 



I 



#• 



A 



u\ « 



^Mi 



Fig. 218. Goldenrod 

 stem midge, L a s i - 

 optera cylindri- 

 g a 1 1 a e Felt. (Au- 

 thor's illustration) 



Fig. 219. Knotty goldenrod gall, 

 Lasiopterasolidaginis O. S. 

 One gall broken open to show interior. 

 (Origmal) 



Subglobular, green gall near the tip, diameter 1.5 cm. Felt 'isi, p. 264 



Itonid. Rhopalomyia lobata Felt 



