EPPO Global Database

Choristoneura occidentalis occidentalis(ARCHOC)

Code created in: 2002-10-29

Basic information
  • Preferred name: Choristoneura occidentalis occidentalis
  • Authority: Freeman


The name of this species has been subject to some controversy (as this Nearctic species is not to be confused with an African species which had also been called at some point 'Choristoneura occidentalis'). Molecular studies (Fagua et al. 2019) led to the redescription of the genus Choristoneura, and reinstated the original name of this species. In addition, Brunet et al. (2017) proposed that C. occidentalis (univoltine populations) and C. biennis (biennial populations) should be referred to as C. occidentalis occidentalis and C. occidentalis biennis, respectively.

Other scientific names
Name Authority
Choristoneura freemani Razowski
Choristoneura occidentalis Freeman

Common names
Name Language
Western spruce budworm English
tordeuse occidentale de l'épinette French (CA)