Gall. β
Ovoid, hypertrophied leaf buds, length 10 to 11 mm., diameter 7 to 8 mm., two or three frequently being confluent, monothalamous, green or somewhat purplish and externally with short, recurved, aborted leaflets covered with a rather thick, gray arachnose pubescence. Apparently the same species was reared from a similar more globose leaf bud gall at once distinguishable by the absence of pubescence.
β- EP Felt: (1916) New Western Gall MidgesΒ©
Reference: https://www.biodiversitylibrary.org/page/8184693#page/225/mode/1up