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confirmed
Likely
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Host Plants
confirmed LikelyLodgepole Pine
Pinus contorta
Quaking Aspen
Populus tremuloides
Douglas Fir
Pseudotsuga menziesii
Water Birch
Betula occidentalis
Beaked Hazelnut
Corylus cornuta
California Hazel
Corylus cornuta ssp. californica
Knobcone Pine
Pinus attenuata
Tamarack Pine
Pinus contorta ssp. murrayana
Coulter Pine
Pinus coulteri
Jeffrey Pine
Pinus jeffreyi
Sugar Pine
Pinus lambertiana
Ponderosa Pine
Pinus ponderosa
Monterey Pine
Pinus radiata
Foothill Pine
Pinus sabiniana
Fremont Cottonwood
Populus fremontii
Fremont Cottonwood
Populus fremontii ssp. fremontii
Black Cottonwood
Populus trichocarpa
Coast Douglas Fir
Pseudotsuga menziesii var. menziesii
Sandbar Willow
Salix exigua
Sandbar Willow
Salix exigua var. hindsiana
Red Willow
Salix laevigata
Shining Willow
Salix lasiandra
Tail-leaf Willow
Salix lasiandra var. caudata
Yellow Willow
Salix lasiandra var. lasiandra
Arroyo Willow
Salix lasiolepis
Lemmon's Willow
Salix lemmonii
Yellow Willow
Salix lutea
Scouler's Willow
Salix scouleriana
Sitka Willow
Salix sitchensis
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