Small rosette bud gall

Gall. — This is a deformed or aborted, usually lateral branchlet forming a small rosette, frequently with the tip more or less recurved, length 1.5 cm., diameter 1 cm.

Rosette-Bud-Gall Midge
Rhopalomyia ericameriae

This midge induces rosette bud galls with flaring and slightly recurved bracts on California goldenbush and Palmer's goldenbush. At first, leafy bracts are erect, but they recurve and turn brown with age.

Leafy rosette bud gall...Rhopalomyia ericameriae Felt

Adults were reared in April. Host: E. palmeri. Distr.: California