Chionaspis pinifoliae
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. Pine needle scales are about 0.1 inch in length, elongate, white scales that are found on and feed on the needles. Heavily infested trees may appear "flocked." Infested needles turn yellow, then brown. Twigs and branches are killed. Repeated infestations may kill trees eventually. Pine needle scales may be found with black pineleaf scales, which is gray to black instead of white. The pine needle scale is a serious pest of ornamental pines and infests arborvitae, cedars, hemlock, spruces, and Douglas-fir.
For biology, life history, monitoring and management
See:
Pine (Pinus)-Pine needle scale
See "Scale insect" in:
Management-chemical control
See Table 1 in: