White Pine Sawfly
Neodiprion pinetum |
| USDA Forest Service. 1979. A guide to common insects and diseases of forest trees in the northeastern United States. Northeast. Area State Priv. For., For. Insect and Disease Management., Broomall, PA. p. 123, illus. |
The white pine sawfly prefers eastern white pine, but also attacks mugho, red, pitch, and shortleaf pines. It feeds on old and new foliage of trees of all sizes in plantations and mixed stands. Mortality can follow complete defoliation.
Adults emerge in spring and the females deposit eggs in the needles. Larvae are present between mid-June and late July and sometimes for a second generation between mid-August and late September. Larvae are white with four rows of square black spots along the length of the body; their heads are black. Pupation is in the duff or soil under the host tree. There is one, and sometimes a partial second generation each year.
Larva(e)
E. Bradford Walker, Vermont Department of Forests, Parks and Recreation |
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