Pest description and damage Lecanium scale are most noticed as they expand in spring. The female lecanium scale are about 0.13 inch in diameter and vary from reddish-brown to dark brown in color. The adults are oval and raised, resembling small "helmets," "turtles," or bumps on branches and stems. Male scale are smaller, fairly flat, and oblong. Pale yellow crawlers feed mostly on the underside of leaves.
For biology, life history, monitoring and management
See "Scale insect" in:
See Table 1 in: