[Wikipedia] Wildlife & Livestock Food Source, Galls: Parts of the plant, including the foliage and fruit, are food for wild animals such as mule deer, black bears, and many resident and migrating birds, as well as livestock.[7]
Two insects induce galls on California coffeeberry: a moth, Sorhagenia nimbosa, induces swelling along the leaf midrib, and a midge of the genus Asphondylia induces flower-bud galls. (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/28/2025).