Short-pilose, oval or spherical gall (247b)...... Asphondylia gemmae Gagne
Galls are ovoid, monothalamous, about 3 mm diameter, and occur in summer and fall on buds, flowers, or fruit. Host: A. canescens. Distr.:California. Ref.: Hawkins et al. (1986).
”- Raymond J. Gagne: (1989) The plant-feeding gall midges of North America©