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2. Choristoneura fumiferana - Wikipedia

   en.wikipedia.org/wiki/Choristoneura_fumiferana

   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. Eastern spruce budworm populations can experience significant oscillations, with large outbreaks sometimes resulting in wide scale tree ...

3. Choristoneura - Wikipedia

   en.wikipedia.org/wiki/Choristoneura

   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)

4. Choristoneura freemani - Wikipedia

   en.wikipedia.org/wiki/Choristoneura_freemani

   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.

5. Pest control - Wikipedia

   en.wikipedia.org/wiki/Pest_control

   Spruce budworm (adult and pupa shown), a serious pest of forests, can be monitored using pheromone traps Main articles: Mechanical pest control , Insect trap , and Crop rotation Mechanical pest control is the use of hands-on techniques as well as simple equipment and devices, that provides a protective barrier between plants and insects .

6. Biological pest control - Wikipedia

   en.wikipedia.org/wiki/Biological_pest_control

   The eastern spruce budworm is an example of a destructive insect in fir and spruce forests. Birds are a natural form of biological control, but the Trichogramma minutum, a species of parasitic wasp, has been investigated as an alternative to more controversial chemical controls. [64]

7. DDT - Wikipedia

   en.wikipedia.org/wiki/DDT

   An airplane spraying DDT over Baker County, Oregon as part of a spruce budworm control project, 1955 DDT spray log in Bosa . DDT is the best-known of several chlorine-containing pesticides used in the 1940s and 1950s. During this time, the use of DDT was driven by protecting American soldiers from diseases in tropical areas.