Pest description and crop damage Small, brownish cream larvae of shoot moths bore into fresh green cones. May also bore into trunk cambium, branches, and shoots.
See "Spruce" in:
Christmas Tree Plantation Pests
Chemical Control of Nursery Pests
For more information
Johnson, W.T. and H.H. Lyon (1991), Insects That Feed on Trees and Shrubs, 2nd ed., Cornell University Press (p. 48-50).