Choristoneura occidentalis occidentalis(ARCHOC)
Distribution details in Canada (Alberta)
Current pest situation evaluated by EPPO on the basis of information dated
2013: Present, restricted distribution
* Brunet B, Sperling FAH (2013) Identification and ecological characterisation of Choristoneura occidentalis (Lepidoptera: Tortricidae) populations in southwestern Alberta, Canada. The Canadian Entomologist 145, 521-528.
------- Defoliation of Pseudotsuga menziesii subps. glauca was first recorded in the Porcupine Hills of Southwestern Alberta in 2005. Also found on Picea glauca and a hybrid P. engelmannii x P. glauca.
------- Defoliation of Pseudotsuga menziesii subps. glauca was first recorded in the Porcupine Hills of Southwestern Alberta in 2005. Also found on Picea glauca and a hybrid P. engelmannii x P. glauca.
| 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 |