Includes Parthenolecanium corni
Pest description and damage Lecanium scale are most noticed as the female scale expand in size in the spring. As females swell in the spring, they produce large egg masses under the scale and release considerable honeydew that coats nearby foliage. Female lecanium scale are about 0.125 inch in diameter and vary from red to dark brown in color. They are oval and raised, resembling small "helmets," "turtles," or bumps on branches, and stems. Male scale are smaller, fairly flat, and oblong. The crawlers are pale yellow and feed on the undersides of leaves. They also produce honeydew.
For biology, life history, monitoring and management
See:
See "Scale insect" in:
Management-chemical control
See Table 1 in: