KEY TO AMERICAN INSECT GALLS 173 



Loasaceae (loasa family) 



Mentzelia 



Reared from flower buds. Ent., 33:302; Felt 'i6d, p. 149 



Itonid. Asphondylia mentzeliae Ckll. 



Cactaceae (cactus family) 



Opuntia (prickly pear) 



Very large,, swollen fruit. Felt 'i6d, p. 148 



Itonid. Asphondylia arizonensis Felt 

 Swollen fruit. Fig. 181. Cockerell '07, p. 324; Felt 'i6d, p. 122 



Itonid. Asphondylia betheli Ckll. 

 Swollen leaves. PI. 5, fig. 6. Felt 'o8e, p. 124, 'i6d, p. 144 



Itonid. Asphondylia opuntiae Felt 

 Decayed, frequently yellowish spots at the base of spines. Fig. 182. Felt 

 'loa, p. 10 



Itonid. Cactus midge, Itonida opuntiae Felt 



Elaeagnaceae (oleaster family) 



Shepherdia canadensis 



Oval bud gall. Felt 'i6g, p. 414 



Itonid. Asphondylia shepherdiae Felt 



Myrtaceae (myrtle family) 



Eugenia 

 Deformed fruit. Felt 'i2d, p. 106 



Itonid. Dasyneura eugeniae Felt 

 Hairy, globose leaf gall, diameter 1.5 mm. Felt '13a, p. 175 



Itonid. Cystodiplosis eugeniae Felt 



Lythraceae (loosestrife family) 

 Decodon (swamp loosestrife) 



Globose bud gall, .length 3-5 mm. Wells, '14, p. 291 



Itonid. ? D a s y n e u r a sp, 



Onagraceae (evening primrose family) 

 Zauschneria 



Rosette gall. Fig. 183. Felt 'i2e, p. 152 



Itonid. Thecodiplosis zauschneriae Felt 



Umbelliferae (parsley family) 

 Cicuta (water hemlock) 



White larvae, probably on leaves. Felt, 'iij, p. 458 



Itonid . Cecidomyia sp. 



