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Western spruce budworm caterpillar, sixth (final) instar Adult moths are about 1 / 2 inch (12.7 mm) long and have a wing-spread of 7 / 8 to 1 1 / 8 inches (22 to 28mm). Moths of both sexes are similar in appearance, although the females are a bit more robust than males.
Choristoneura is a genus of moths in the family Tortricidae. ... 2008, western spruce budworm; Choristoneura fumiferana (Clemens, 1865), eastern spruce budworm;
Choristoneura fumiferana, the eastern spruce budworm, is a species of moth of the family Tortricidae native to the eastern United States and Canada. The caterpillars feed on the needles of spruce and fir trees.
Choristoneura orae, the spruce budworm, is a moth of the family Tortricidae. It is found in North America. Caterpillar Pupa Damage. The wingspan is about 24 mm.
Choristoneura occidentalis. Archips occidentalis [or Choristoneura occidentalis in some schemes] is a species of moth of the family Tortricidae.It is found in the Gambia, and possibly more broadly, such as Democratic Republic of Congo, Tanzania, and South Africa.
3640.97 – Choristoneura occidentalis complex, western spruce budworm complex 3641 – Choristoneura biennis , two-year-cycle budworm moth 3642 – Choristoneura orae
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It is the most commonly used pesticide and is used against other pests, including the western spruce budworm and other Choristoneura and the tent caterpillar. When Bt is taken internally, the insect is paralyzed, stops feeding, and dies of starvation or disease. Chemical pesticides are contact poisons and stomach poisons.