Pruche de l'Ouest
The larvae feed on "Picea glauca", "Picea engelmannii", "Pinus" species (including "Pinus albicaulis", "Pinus banksiana", "Pinus contorta", "Pinus monticola", "Pinus ponderosa"), "Pseudotsuga menziesii" and "Tsuga heterophylla".