Photo 9. Typical bags containing overwintering eggs. Note that each bag is attached securely to the twig by a band of silk. Bag at left on arborvitae was photographed in early September just after eggs were laid; bag at right on Virginia pine was photographed in April prior to egg hatch -- note sign of weathering on the overwintered bag.

Photo 9.
Typical bags containing overwintering eggs. Note that each bag is attached securely to the twig by a band of silk. Bag at left on arborvitae was photographed in early September just after eggs were laid; bag at right on Virginia pine was photographed in April prior to egg hatch — note sign of weathering on the overwintered bag.