Pest description and damage Pine needle scale are about 0.1 inch in length, elongate, pure white scale that 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. While pine needle scale is a serious pest of ornamental pines, it infests arborvitae, cedar, hemlock, spruce and Douglas-fir.
For biology, life history, monitoring and management
Pine (Pinus)-Pine needle scale
See "Scale insect" in:
See Table 1 in: