robusta (Crawford, 1914)

Type locality: USA, Arizona, California, Colorado, Washington.

Additional distribution: Idaho, Montana, Oregon, South Dakota, Utah, Wyoming; Canada, British Columbia.

Host plant: Ceanothus fendleri, C. cordulatus, C. velutinus, C. integerrimus .

Parasitoids: Prionomitus mitratus and Psyllaephagus sp.