Gill, R.J. 1997 . The Scale Insects of California: Part 3. The Armored Scales (Homoptera: Diaspididae). California Department of Food & Agriculture Sacramento, CA 307 pp.
Notes: Technical Series in Agricultural Biosystematics & Plant Pathology No. 1. Intended as field guide and laboratory manual; all California armored scale spp. listed; field characteristics; spp. which are similar; common hosts, distribution; biology; economic importance.