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Virginia pine sawny causes extensive defoliation of pine trees in the spring of the y$ar when the larvae feed upon the old growth needles before the new needles develop and grow. Pine trees are not usually killed by this insect but the trees become unsightly, generally lose their vigor after repeated attacks and show a decided slow down in growth rate. Trees repeatedly defoliated by this insect often become susceptable to attack by other insects and to disease which may kill them. The larvae, which feed heavily on the needles of pine trees in the spring of the year and particularly on Virginia Pine, are about one inch long, light to dark green in color and have black bands down their backs and sides with some black dots. Sawflies get their name from the characteristic saw-like blade which is used by the adult female insect to lay her eggs in the edges of pine needles.
Forester William C. Vernam stated that Virginia Pine sawfly defoliation in Fauquier, Loudoun and Rappahannock counties is expected to be light to negligible this spring. Considerable defoliation (over 50% of the foliage removed) is still expected in the counties of King Sc Queen, Essex,
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