Powell, J.A., & Hogue, C.L. 1979 . California Insects. (California Natural History Guides, No. 44). University of California Press Berkeley 388 pp.
Notes: Among the 600 most common insects, and more than 200 species of scales, that are singled out for mention in this book are Aonidiella aurantii, Dactylopius coccus, Gossyparia spuria, Icerya purchasi, Pseudoccus longispinus and Quadraspidiotus perniciosus. Brief descriptions, illustrations and comments are given for each species.