Lecanium scale (Parentholecanium spp.)
Oystershell scale (Lepidosaphes ulmi)
San Jose scale (Quadraspidiotus perniciosus)
Description, biology and management Small soft insects with various scale coverings. Identify scale based on scale known from the host, and the description of the male, female and crawler shapes and color of eggs and crawlers.
For biology, life history, monitoring and management
See "Scale insect" in:
See Table 1 in: