460 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 4 



Eragrostis minor 

 Probably a stem gall Neolasioptera agrosHs n. sp. 



Erigeron canadensis (horseweed) 

 Reared from minute bud galls usually and also from a scarcely discolored, incon- 

 spicuous, blister mine Asterotnyia modesta Felt> 



Fusiform stem gall Neolasioptera erigerontis Felt. 



Eriogonum 

 Elongate bud swelling Cecidomyia sp. 



Eupatorium 

 Green conical leaf galls, length, 4 mm.; diameter, 1.5 mm. 



Hyperdiplosis eupalorii Felt. 



Eupatorium perfoliatum (thoroughwort, boneset) 



Reared from apparently normal florets Clinorhyncha eupatoriflaroe Felt. 



Reared from florets Contarinia perfoliata Felt. 



Oval stem gall, length, 1 to 1.5 cm Neolasioptera perfoliata Felt. 



Reared from apparently the same gall Brachyneura eupalorii Felt. 



Eupatorium purpureum (Joe-pyeweed, trumpetweed) 

 Oval, blossom bud gall, length, 1 cm Dasyneura purpurea Felt. 



Eupatorium urtic^folium (white snake root) 



Globose, flower, bud galls, length, 6 mm Lestodiplosis eupalorii Felt. 



Subglobular stem gall, length, 1.5 cm Neolasioptera eupatorii Felt. 



Similar gall Asphondylia eupatorii n. sp. 



Euphorbia (spurge) 

 Subcylindric fruit gall, length, 5 mm.; diameter, 1 mm Cecidomyia sp. 



Eurotia 

 Irregular bud galls Cecido7nyia sp. 



Fagus (beech) 

 Under decaying bark Miastor americana Felt. 



Ficus (wild fig) 



Reared from a decaying branch Holoneurus occidentalis Felt. 



Lasiopteryx schwarzi Felt. 

 Hyperdiplosis americana Felt. 



Fragaria (strawberry) 

 Reniform petiole gall, length, 8 to 21 mm Cecidomyia sp. (reniformis Steb.) 



Fraxinus (ash) 



Subglobular leaf galls, diameter, 5 mm Lasioptera fraxinifolia Felt. 



Same gall as above Cecidomyia pellex O. S. 



Apparently from the same gall Colpodia temeritatis Felt. 



Large, tumid, midrib gall, length 5 to 15 mm Contarinia canadensis Felt. 



Same gall as above Dasyneura tumidosoe Felt. 



