Morgan, C.V.G., & Angle, B.J. 1968 Notes on the habits of the San Jose scale and the European fruit scale (Homoptera: Diaspididae) on harvested apples in British Columbia.. Canadian Entomologist 100: 499-503.

Notes: The habits of the San José scale, Aspidiotus perniciosus Comstock, and the European fruit scale A. ostreaeformis Curtis, on harvested apples in British Columbia are discussed under the following topics: stages found on apples, distribution and mortality on apples, influence on size, odor and skin of apples, discoloration of fruit, and appearance of scales on apples. The distribution and unique characteristics of these species on individual apple varieties are also discussed.