Douglas-fir (Pseudotsuga)-Brown soft scale

Coccus hesperidum

Pest description and damage Scale insects are small (less than 0.125 inch in length) soft insects that live beneath waxy scales. These insects are often identified by the shape and size of their scales, the description of adult males and females, immature crawler stage, color of eggs, and host plant preferences. Brown soft scales are yellowish to dark brown insects (adults are usually darker) that range in length from 0.1 to 0.2 inches. They are found mainly on twigs, although young scales also may be found on the foliage, typically on the underside of needles. Scale insects suck plant sap and produce copious honeydew on which sooty mold may grow.

For biology, life history, monitoring and management

See "Scale insect" in:

Management-chemical control

See Table 1 in: