Pine (Pinus)-Pine needle scale

Chionaspis pinifoliae

See:

Common Pests of Nursery Crops

Pest description and crop damage Elongate, flat, white scale on leaves. May cause severe damage. Pine needle scale also attacks spruce, fir, and occasionally cedar.

See "Pine" in:

Christmas Tree Plantation Pests

Management-chemical control

See:

Chemical Control of Nursery Pests

Apply to control the immature crawler stage, usually in late spring to early summer. Scout for crawlers and gather life history data.

For more information

Johnson, W.T. and H.H. Lyon (1991), Insects That Feed on Trees and Shrubs, 2nd ed., Cornell University Press (p. 108).

PNW Nursery IPM: Pine needle scale (http://oregonstate.edu/dept/nurspest/pine_needle_scale.htm)