White Sage Leaf Gall Midge (Rhopalomyia audibertiae)
Map courtesy of iNaturalist — filtered to user billhubick.
About
Larvae use <em>Salvia</em> species. BugGuide: "Galls of R. audibertiae are conical, narrowing from the base, and the same color as the leaf. Galls of R. salviae are narrowly cylindrical and reddish."