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After the first instar, they enter diapause and overwinter. Spruce budworms may overwinter twice, and thus enter diapause twice, when they are on a two-year life cycle. This can occur in the spruce-balsam forests of central and southern British Columbia and of the Rocky Mountains. Larvae have been observed to end the first diapause in the ...
Throughout most of its range, the western spruce budworm completes one cycle of development from egg to adult within 12 months. Moths emerge from pupal cases usually in late July or early August; in the southern Rockies, adults often begin emerging in early July. The adults mate, and within 7 to 10 days, the female deposits her eggs and then dies.
Choristoneura freemani Razowski, 2008, western spruce budworm; Choristoneura fumiferana (Clemens, 1865), eastern spruce budworm; Choristoneura griseicoma (Meyrick, 1924) Choristoneura hebenstreitella (Muller, 1764), mountain-ash tortricid; Choristoneura heliaspis (Meyrick, 1909) Choristoneura improvisana (Kuznetsov, 1973)
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.
Much of its development, adult life, ovipositing and mating occurs on this tree, making it a key aspect of the moth’s life cycle and habitat. [6] Consequently, the distribution of the moth is limited to regions with high density of white spruce trees, such as Canada and other Northern temperate regions.
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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.
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