KEY TO AMF.UICAN INSECT GALLS 



179 



Subglobular, white ash leaf galls, diameter 5 mm. Felt 'o8e, p. 327 



Itonid. L a s i o p t e r a f r a x i n i f o 1 i a Felt 

 Apparently from the same gall. Felt 'o8e, p. 416 



Itonid. Colpodia temeritatis Felt 

 Inhabiting a similar gall. Fig. 190. Osten Sacken '62, p. 199 



Itonid. Ash bullet gall, Cecidomyia pellex O. S. 

 Large, tumid midrib gall on white ash, length 5 to 15 mm. Fig. 191. Felt 

 'o8e, p. 394 



Itonid. Ash midrib gall, Contarinia canadensis Felt 

 Probably reared from the same gall. Felt '156, p. 155 



Itonid. Dasyneura tumidosae Felt 

 Reared from tightly-rolled leaves of white ash. Felt 'i5e, p. 133 



Itonid. Dasyneura fraxinifolia Felt 

 Reared from badly rolled leaves. Fig. 192. Felt 'i5e, p. 203 



Itonid. Rhizomyia fraxinifolia Felt 



Pig. 192. Rhizo- 

 myia fraxinifo- 

 lia Felt. Deformed 

 head. (Original) 



Fig. 193. Ash petiole midge, Phyto- 

 phaga fraxini Felt. (Original) 



Reared from badly rolled leaves of white ash, probably predaceous. Felt 'o8e, 

 p. 408 



Itonid. Lestodiplosis fraxinifolia Felt 

 Badly curled, purple-streaked terminal leaves. PI. 15, fig. 3. Felt 'iim, p. 39 

 Hemip. Ash psyllid, Psyllopsis fraxinicola Forst. 

 Reared from base of leaf petioles of white ash. Fig. 193. Felt '151, p. 206 



Itonid. Ash petiole midge, Phytophaga fraxini Felt 

 Lobulate deformations of the staminate flowers of white ash, diameter 6 to 12 mm. 

 PI. 15, fig. 9. Felt '06b, p. 633 



Acarid. Ash flower gall, Eriophyes fraxiniflora Felt 

 Elongate capsule or vein galls on the leaves, pinkish above, whitish beneath, 

 on one side of the vein, on white ash. Chadwick '08, p. 134 



Acarid. Eriophyes sp. 

 Typical capsule leaf galls, small, irregular, circular and light green in color, 

 opening below. Chadwick '08, p. 134 



Acarid. Eriophyes sp. 



