KEY TO AMERICAN INSECT GALLS 165 



Warty swellings on the leaves. Hoilgk. '13, p. 422, 424 



Acarid. Eriophyes negundi Hodgk. 



Phyllocoptcs splendidus Hodgk 



Balsaminaceae (touch-me-not family) 



Impatiens (balsam, jewel weed) 

 Globose, flower bud gall, length i cm. PL 7, fig. 4. Oslen Sacken '62, p. 204 



Itonid. Touch-me-not gall, Cecidomyia impatientis O. S. 

 Tumid, midrib fold, length 5 mm. PI. lo, fig. 8. Felt '07a, p. 105 



Itonid. Lasioptera impatientifolia Felt 

 Subglobular stem gall. Beutm. '08, p. 75 



Itonid. Lasioptera.fulva Beutm. 

 Enlarged stem infested with .^cidium impatientis. Felt 'o8e, p. 401 



Itonid. Mycodiplosis impatientis Felt 



Rhamnaceae (buckthorn family) 



Ceanothus (red root) 

 Loose, terminal bud gall, length 2 cm, diameter 1.5 cm. Felt 'i6d, p. 133 



Itonid. Redroot bud gall, Asphondylia ceanothi Felt 

 Thickened vein fold, sometimes confluent, light green, 5x3 mm 



Itonid. Cecidomyia sp. a28i8 

 Spindle-shaped stem enlargements, 10 to 15 mm long, 5 to 8 mm in diameter, 

 sometimes on branches, occasionally aborting flower clusters. 



Lepid. Red root stem gall, Stagmatophora ceanothiella 



Cosens 

 Vitaceae (vine family) 



Psedera (Virginia creeper, woodbine) 

 Infertile seeds. Crosby '09, p. 382 



Hym. Woodbine seed wasp, Prodecatoma phytophaga 



Crosby 

 Tumid, more or less irregular, sometimes winged midrib leaf gall, length i cm. 

 Fig. 171. Felt 'i3h, p. 216 



Itonid. Woodbine vein gall, Dasyneura parthenocissi 



Stebb. 

 A " nail gall " or pouch leaf galj tapering at both extremities. Chad wick '08, 

 p. 127 



Acarid. Eriophyes sp. 

 Irregular root gall, diameter 2 to 3 mm. Felt 'iij, p. 466 



Itonid. Woodbine root gall, Cecidomyia sp. 



Vitis (grape) 

 Fruit and bud galls 

 Shriveled berries and enlarged seeds. Crosby '09, p. 380 



Hym. Grape seed wasp, Evoxysoma vitis Saund. 

 Reared from grape seeds. Howard '95, p. 23 



Hym. Decatomidea cooki How. 

 Reared from enlarged, sometimes reddish, striped blossom buds, diameter 2 

 to 3 mm. Felt '09f, p. 15 



Itonid. Grape blossom midge, C o n t a r i n i a j o h n s o n i Sling. 



