Herbert, F.B. 1936 Insect pests of western oaks and their control.. Western Shade Tree Conference 3rd: 32-43.

Notes: Proceedings of the annual meeting held on March 19-20, 1930. Scale insects listed include Lecanium canadense, L. quercitronis, Asterolecanium variolosum, Mycetococcus ehrhorni, Chionaspis quercus and Kermes sp.