Gill, R.J. 1988 . The Scale Insects of California: Part 1. The Soft Scales (Homoptera : Coccoidea : Coccidae). California Dept. of Food & Agriculture Sacramento, CA 132 pp.
Notes: Abstract: Technical Series in Agricultural Biosystematics & Plant Pathology No. 1. Intended as field guide and laboratory manual; all California soft scale spp. listed; field characteristics; spp. which are similar; common hosts, distribution; biology; economic importance; biological control; 137 figs including 90 in color.