KEY TO AMERICAN INSECT GALLS 



207 



Tubular, axillary bud gall, length 10 to 25 mm. Fig. 238. Felt 'i3(l, p. 418 



Itonid. Tubular bud gall, H o r m o m y i a h e 1 i a n t h i Brodie 

 Reared from undetected gall. Felt 'oye, p. 7 



Itonid. Neolasioptcra helianthi Felt 



A ctinomeris alternijolia 



Globose bud gall. Beutm. '07c, p. 391 



Itonid. Cecidomvia ? verbesinae Beutm 



Helenium (sneezeweed) 

 Apical rosette gall, length 2 to 3 cm. Beutm. '07c, p. 383. Felt 'i6d, p. 137 



Itonid. Asphondylia autumnalis Beutm. 

 Small stems with the pith tunneled by orange-colored larvae 



Itonid. Cecidomyia sp. a274 



i^-i, ;.r.„ V "-"^ ■ , . 

 t^:~ *^ . '1 '■- ' -t 



^■kr ^- ". - • Vs-ik 



Fig. 239. R h o - 

 palomyia alti- 

 c o 1 a Ckll. (Au- 

 thor's illustration) 



Fig. 240. p i a r t h - 

 ronomyia flcc- 

 c o s a Felt. (Original) 



Fig. 241. 

 Dia r t h - 

 ronomyi a 

 calif o r - 

 n i c a Felt. 

 Three galls. 

 (Original) 



Fig. 242. Rhopa. lo-"^ 

 myia betheliana 

 Ckll. Cluster of galls. 

 (Original) 



Achillea (yarrow) 



Florets apparently normal. Felt 'o8e, p. 333 



Itonid. Yarrow flower midge, Clinorhyncha millefolii 



Wachtl. 

 Irregularly oval, flower bud gall with a whitish pubescence, length 7 mm. 



Itonid. ?Rhopaloniyia millefolii H. Lw. 



Anthemis (chamomile) 

 Larvae in flower heads. Felt 'iij, p. 453 



Itonid. Cecidomyia sp. 



