from ... leaf galls from Salvia (Ramona) californica and S. nivea [Felt later refers to "S. nivea (or leucophylla)"]

A very different leaf gall, apparently produced by the same midge, occurs on the margins of moderately well-developed leaves. It is a typical thin-walled, tubular gall with a length of about 6 mm., a diameter of 1.5 mm. The interior is occupied by an elongate larval chamber. Basally the gall is concolorous with the leaf, the distal third being purplish, the slightly curved apex a little lighter.

A modification of the first type of gall is seen on the aborted leaflets of S. nivea (or leucophylla). These galls are irregularly obconical, with a length of about 7 mm., a diameter of 3 mm. and are more or less confluent, otherwise nearly as described above.

Tubular outgrowth of leaf ... Rhopalomyia spp.
Sages in western North America evidently support many kinds of galls formed by Rhopalomyia spp., and several kinds are represented in the USNM. Galls are monothalamous even though they may form close aggregates... Two species of gall midges have been described from Salvia.

R. audibertiae Felt. Galls are conical, narrowing from base, and the same color as the leaf... Host: S. apiana. Distr.: Baja California and Mexico.

R. salviae Felt. Galls are cylindrical and reddish... Host: S. "californica" [S. apiana] Distr.: California.