Choristoneura occidentalis occidentalis(ARCHOC)
Distribution details in Canada (British Columbia)
Current pest situation evaluated by EPPO on the basis of information dated
2005: Present, restricted distribution
First recorded in: 1909
First recorded in: 1909
First recorded on Vancouver Island in 1909, then in other parts of British Columbia. It is at the northern limit of its natural range in British Columbia.
* Alfaro RI (1986) Journal of the Entomological Society of British Columbia 83, 19-26.
* Furniss RL, Carolin VM (1977) Western Forest Insects. USDA , Forest Service Miscellaneous Publication no. 1339, 654 pp.
* Harris JWE, Alfaro RI, Dawson AF, Brown RG (1985) Information Report, Pacific Forest Research Centre, Canada No. BC-X-257, 32 pp.
* Nealis V (2005) Diapause and voltinism in western and 2-year cycle spruce budworms (Lepidoptera: Tortricidae) and their hybrid progeny. The Canadian Entomologist 137, 584-597.
------- It is at the northern limit of its natural range in British Columbia and is associated most commonly with Pseudotsuga menziesii.
* Shepherd RF (1985) Recent advances in spruce budworms research. Proceedings of the CANUSA Spruce Budworms Research Symposium, Bangor, Maine, September 16-20, 1984, pp. 60-70.
* Unger LS (1995) Forest Pest Leaflet - Pacific Forestry Centre, Canadian Forest Service No. 31, 4 pp.
* Furniss RL, Carolin VM (1977) Western Forest Insects. USDA , Forest Service Miscellaneous Publication no. 1339, 654 pp.
* Harris JWE, Alfaro RI, Dawson AF, Brown RG (1985) Information Report, Pacific Forest Research Centre, Canada No. BC-X-257, 32 pp.
* Nealis V (2005) Diapause and voltinism in western and 2-year cycle spruce budworms (Lepidoptera: Tortricidae) and their hybrid progeny. The Canadian Entomologist 137, 584-597.
------- It is at the northern limit of its natural range in British Columbia and is associated most commonly with Pseudotsuga menziesii.
* Shepherd RF (1985) Recent advances in spruce budworms research. Proceedings of the CANUSA Spruce Budworms Research Symposium, Bangor, Maine, September 16-20, 1984, pp. 60-70.
* Unger LS (1995) Forest Pest Leaflet - Pacific Forestry Centre, Canadian Forest Service No. 31, 4 pp.
| Country | State | Status | |
|---|---|---|---|
| United States of America | Montana | Present, no details | |
| United States of America | Wyoming | Present, no details | |
| United States of America | Utah | Present, no details | |
| United States of America | Present, restricted distribution | ||
| United States of America | Arizona | Present, no details | |
| United States of America | New Mexico | Present, no details | |
| United States of America | California | Present, no details | |
| United States of America | Washington | Present, no details | |
| United States of America | Oregon | Present, no details | |
| United States of America | Idaho | Present, no details | |
| United States of America | Colorado | Present, no details |