Eggs: Pine spittlebugs overwinter as eggs inserted in dead twigs or slits cut into the bark of living stems. The eggs hatch in early May and the young nymphs migrate to the tender one-year-old growth.
Nymphs: The nymphs begin to produce the frothy spittle from their anus.
The young nymphs are yellowish with black markings; older nymphs become more brown. Several nymphs may join together in one large spittle mass and the nymphs constantly abandon old masses to make new ones.
The young nymphs are yellowish with black markings; older nymphs become more brown. Several nymphs may join together in one large spittle mass and the nymphs constantly abandon old masses to make new ones.
The nymphs mature by July and soon leave the spittle in order to molt into the winged adult.
Adults: The adults do not form spittle masses but quickly jump and fly if disturbed. The adults are mottled gray with two faint parallel lines running across the wings
