(Coccidae: Homoptera)
Issue No. 144
G. W. Dekle
May, 1974
Introduction
Scale insects are plant parasites. Whenever infestations become established on ornamental plants, plant quality is affected. Severe infestations found in commercial greenhouses may result in a quarantine of all infested plants. The key presented here is based on external characteristics of the soft scales and is for use with a hand lens. It has been prepared for plant specialists, plant quarantine inspectors, county agents, and commercial nurserymen.