Hemlock (Tsuga)-Pine needle scale

Chionaspis pinifoliae

Pest description and damage Pine needle scale are 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

See:

Pine (Pinus)-Pine needle scale

See "Scale insect" in:

Common Landscape Pests

Management-chemical control

See Table 1 in:

Chemical Control of Landscape Pests