Yew (Taxus)-Lecanium scale

Lecanium spp.

Pest description and damage Lecanium scales are most noticed as they expand in spring. As females swell in the spring they produce considerable honeydew. The 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, stems, and the underside of leaves. Male scale are smaller, fairly flat, and oblong. Crawlers are pale yellow and overwinter on stems of host plant.

For biology, life history, monitoring and management

See:

Management-chemical control

See Table 1 in: