KEY TO AMERICAN INSECT GALLS I93 



On Solidago canadensis and S. s e r o t i n a 



Gall composed of numerous small cells and with a diameter of 2.5 cm. 

 Felt '151, p. 245 

 Itonid. Goldenrod rosette midge, R h o p a 1 o m y i a c a p i t a t a 



Felt 

 Reared from the same gall. Felt '151, p. 248 



Itonid. Rhopalomyia inquisitor Felt 



On Solidagograminifolia 



Moderately loose apical bud gall, diameter i to 1.5 cm, resembles that 

 of Oedaspis polita. Fig. 2-16, pi. 5, fig. 5. Osten Sacken '69, 

 p. 299; Felt 'i6d, p. 127 



Itonid. Nun midge, A s p h o n d y 1 i a m o n a c h a O. S. 

 Presumably reared from the same gall. Felt 'o8e, p. 327 



Itonid. Camptoneuromyia flavescens Felt 

 Gall similar to the above, possibly inquiline. Felt '15J, p. 269 



Itonid. Rhopalomyia lanceolata Felt 



On Solidago sempervirens ' 



Small, loose apical bud gall as described above. Osten Sacken '69, p. 299- 

 Felt 'i6d, p. 127 



Itonid. .Nun midge, Asphondylia monacha O. S. 



On Solidago altissima 



Small, rosette gall, length 12 to 18 mm, and containing a small larval cell. 

 Stebb. '10, p. 52 



Dipt. Small rosette gall, Oedaspis polita Lw. 

 Oedaspis atra Lw. 

 Leaf galls 



Galls attached to one or at most two leaves and producing a marked deformity 

 On Solidago graminifolia 



Gall fusiform, sessile, ribbed, greenish, with red markings, length 6 mm. 

 Felt 'i5i, p. 254 



Itonid. Goldenrod ribbed gall, Rhopalomyia fusiformis 



Felt 

 Gall fusiform, stemmed, green, red-marked, length 13 to 14 mm. Felt 

 '151, p. 262 



Itonid. Goldenrod stemmed gall, Rhopalomyia pedicellata 



Felt 



On Solidago puberla or S. juncea 



Gall oval, irregular, greenish, composed of clusters of root leaves, length i 

 . cm. Felt 'i5e, p. 178 



Itonid. Dasyneura radifolii Felt 



On Solidago rugosa 



Gall fusiform, sessile, green, red-marked, length 1.6 mm. Fig. 217. Felt 



•'151. P- 239 



Itonid. Clarke's goldenrod gall, Rhopalomyia c 1 a r k e i 



ielt 



