EPPO Global Database

Choristoneura occidentalis occidentalis(ARCHOC)

Distribution details in United States of America (Colorado)

Current pest situation evaluated by EPPO on the basis of information dated 1994: Present, no details
* Furniss RL, Carolin VM (1977) Western Forest Insects. USDA , Forest Service Miscellaneous Publication no. 1339, 654 pp.

* Hadley, K. S. (1994) Bulletin of the Torrey Botanical Club 121 (1), 47-61.

* Hadley, K. S.; Veblen, T. T. (1993) Canadian Journal of Forest Research 23 (3), 479-491.

* Swetnam, T. W.; Lynch, A. M. (1989) Forest Science 35 (4), 962-986.

* Weber, U. M.; Schweingruber, F. H. (19950 Trees: Structure and Function 9 (4), 204-213.
Situation in neighbouring countries
Country State Status
Canada Present, restricted distribution view...
Canada Alberta Present, restricted distribution view...
Canada British Columbia Present, restricted distribution view...