Disholcaspis quercusmamma (agamic)

Proteoteras willingana

Contarinia negundinis

Contarinia a-negundo-bead-gall

Disholcaspis quercusmamma

Twig gall. Light tan globular woody gall with a rough surface, found in groups of 3 or more. Bur oak. Summer. 

Proteoteras willingana

Twiggall, gradual swelling with entrance hole in bottom half. Boxelder. May to July.

Dasineura communis [sic--this seems to be a mistake?]

Midrib gall on lower leaf surface. Enlarged pouch-type gall with exit on upper leaf surface (fig. 65). Numerous maggots per gall. Boxelder. June to August. Dasineura communis Felt gouty vein gall 

Contarinia negundifolia [consistent with Felt's usage of this name, but the same source lists D communis as the midge responsible for the boxelder vein swelling gall elsewhere referred to as C negundifolia]

Hemispherical galls on midvein (fig. 66), light green with bluish tint. Boxelder. June to September. Contarinia negundifolia Felt boxelder leafgall

Key to shelterbelt insects in the northern great plains