About Diplolepis californica
Diplolepis californica, previously classified as Rhodites californicus and commonly called the leafy bract gall wasp, is a species of cynipid wasp. It induces galls on wild roses along the Pacific coast of North America. This wasp produces club-shaped bud galls, which naturalist Richard A. Russo notes are "distinguished from all others by the flat, leafy lobes that emanate from the main gall body and look like aborted leaflets". Every gall formed by this species contains multiple larval chambers. One known host plant for the leafy bract gall wasp is Rosa californica.