EPPO Global Database

Choristoneura occidentalis occidentalis(ARCHOC)

Distribution details in Canada (British Columbia)

Situation
Current pest situation evaluated by EPPO on the basis of information dated 2005: Present, restricted distribution
First recorded in: 1909
Comments
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.
References
* 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.
Situation in neighbouring countries
Country State Status
United States of America Montana Present, no details view...
United States of America Wyoming Present, no details view...
United States of America Utah Present, no details view...
United States of America Present, restricted distribution view...
United States of America Arizona Present, no details view...
United States of America New Mexico Present, no details view...
United States of America California Present, no details view...
United States of America Washington Present, no details view...
United States of America Oregon Present, no details view...
United States of America Idaho Present, no details view...
United States of America Colorado Present, no details view...