KEY TO AMERICAN INSECT GALLS 



201 



Oval twig gall, length i .5 cm, on Aster novae-angliae. Felt '15!, 

 P- 259 



Itonid. Rliopalomyia astericaulis Felt 

 Fusiform stem or branch gall, length i cm, diameter .4 cm. Fig. 228. Beutm. 

 '07c, p. 392 



Itonid. Aster stem gall, Neolasioptera ramuscula Beutm. 

 Fusiform, greenish brown, irregular stem swelling at or near the base of the leaf, 

 length I cm, diameter .6 cm, on Aster infirmus. Fig. 229. Felt 

 '07a, p. 153 



Itonid. Neolasioptera albitarsis Felt 



Fig. 230. 

 Horseweed blis- 

 ter midge, A s- 

 t e r o m y i a 

 m o d e s t a 

 Felt. (Author's 

 illustration) 



Fig. 231. 

 Horseweed stem 

 midge, N e o - 

 lasiopter a 

 erigerontis 

 Felt. (Original) 



' Fig. 232. 

 R ho p al o- 

 my i a e rige- 

 r o n t i s Felt. 

 Typical gall. 

 (Original) 



Fusiform stem gall, length 2 cm, diameter i cm, on Aster umbellatus- 

 Fyles 'II, p. 135 



Lepid. Gnorimoschema gallaediplopappi Fyles 

 Fusiform stem gall, length 3 cm, diameter 1.5 cm, usually near the ground, on 

 Aster divaricatus, Solidago latifolia and S. c a e s i a . 

 Busck '11, p. 6 



Lepid. Gnorimoschema gallaeasteriella Kell. 



Spindle-shaped, stem or root galls, length 15 mm, diameter 6 to 8 mm, near or 



beneath the surface of the ground, on Aster multiflorus. Busck 



'II, P- 5 



Lepid. Gnorimoschema subterranea Busck 



