Dioryctria spp.
Pest description and crop damage Small, brownish cream larvae of shoot moths that bore into fresh green cones. They also may bore into trunk cambium, branches, and shoots.
See "Pine" in:
Christmas Tree Plantation Pests
Management-chemical control
See:
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).