Host Plants
confirmed
LikelyGray Alder
Alnus incana
Red Alder
Alnus rubra
Green Alder
Alnus viridis
Red Osier Dogwood
Cornus sericea
Quaking Aspen
Populus tremuloides
Chokecherry
Prunus virginiana
Balsam Fir
Abies concolor
Grand Fir
Abies grandis
Balsam Fir
Abies magnifica
California Red Fir
Abies magnifica var. magnifica
Vine Maple
Acer circinatum
Rocky Mountain Maple
Acer glabrum
Rocky Mountain Maple
Acer glabrum var. diffusum
Mountain Maple
Acer glabrum var. glabrum
Big Leaf Maple
Acer macrophyllum
Box Elder
Acer negundo
Mountain Alder
Alnus incana ssp. tenuifolia
White Alder
Alnus rhombifolia
Sitka Alder
Alnus viridis ssp. sinuata
Western Serviceberry
Amelanchier alnifolia
Glabrous Serviceberry
Amelanchier alnifolia var. pumila
Pacific Serviceberry
Amelanchier alnifolia var. semiintegrifolia
Pale Serviceberry
Amelanchier pallida
Service Berry
Amelanchier utahensis
Resin Birch
Betula glandulosa
Water Birch
Betula occidentalis
Brown Dogwood
Cornus glabrata
Pacific Dogwood
Cornus nuttallii
Western Dogwood
Cornus sericea ssp. occidentalis
Creek Dogwood
Cornus sericea ssp. sericea
Miner's Dogwood
Cornus sessilis
Beaked Hazelnut
Corylus cornuta
California Hazel
Corylus cornuta ssp. californica
California Ash
Fraxinus dipetala
Oregon Ash
Fraxinus latifolia
Tinker's Penny
Hypericum anagalloides
Gold-wire
Hypericum concinnum
Scouler's St. Johnswort
Hypericum scouleri
Little Leaf Mountain Laurel
Kalmia polifolia
Weeping Spruce
Picea breweriana
Sitka Spruce
Picea sitchensis
Narrow Leaved Cottonwood
Populus angustifolia
Fremont Cottonwood
Populus fremontii
Fremont Cottonwood
Populus fremontii ssp. fremontii
Black Cottonwood
Populus trichocarpa
Desert Peach
Prunus andersonii
Bitter Cherry
Prunus emarginata
Desert Range Almond
Prunus fasciculata
Hollyleaf Cherry
Prunus ilicifolia
Klamath Plum
Prunus subcordata
Western Chokecherry
Prunus virginiana var. demissa
Coast Live Oak
Quercus agrifolia
Coast Live Oak
Quercus agrifolia var. agrifolia
Scrub Oak
Quercus berberidifolia
Canyon Live Oak
Quercus chrysolepis
Blue Oak
Quercus douglasii
Nuttall's Scrub Oak
Quercus dumosa
Leather Oak
Quercus durata
Leather Oak
Quercus durata var. durata
Garry's Oak
Quercus garryana