Host Plants
confirmed
LikelyVine Maple
Acer circinatum
Gray Alder
Alnus incana
Quaking Aspen
Populus tremuloides
Douglas Fir
Pseudotsuga menziesii
Gray Willow
Salix bebbiana
Western Hemlock
Tsuga heterophylla
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
Red Alder
Alnus rubra
Green Alder
Alnus viridis
Sitka Alder
Alnus viridis ssp. sinuata
Resin Birch
Betula glandulosa
Water Birch
Betula occidentalis
Beaked Hazelnut
Corylus cornuta
California Hazel
Corylus cornuta ssp. californica
Weeping Spruce
Picea breweriana
Engelmann Spruce
Picea engelmannii
Sitka Spruce
Picea sitchensis
Fremont Cottonwood
Populus fremontii
Fremont Cottonwood
Populus fremontii ssp. fremontii
Black Cottonwood
Populus trichocarpa
Coast Douglas Fir
Pseudotsuga menziesii var. menziesii
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
Garry's Oak
Quercus garryana var. breweri
Oregon White Oak
Quercus garryana var. garryana
Oregon White Oak
Quercus garryana var. semota
Black Oak
Quercus kelloggii
Valley Oak
Quercus lobata
Santa Cruz Island Oak
Quercus parvula
Shreve Oak
Quercus parvula var. shrevei
Deer Oak
Quercus sadleriana
Huckleberry Oak
Quercus vacciniifolia
Interior Live Oak
Quercus wislizeni
Interior Live Oak
Quercus wislizeni var. frutescens
Interior Live Oak
Quercus wislizeni var. wislizeni
Cuyamaca Raspberry
Rubus glaucifolius
Rough Fruit Berry
Rubus lasiococcus
Western Raspberry
Rubus leucodermis
Thimbleberry
Rubus parviflorus
Salmon Berry
Rubus spectabilis
California Blackberry
Rubus ursinus
Booth's Willow
Salix boothii
Brewer's Willow
Salix breweri
Mountain Willow
Salix eastwoodiae
Sandbar Willow
Salix exigua
Sandbar Willow
Salix exigua var. hindsiana
Geyer's Willow
Salix geyeriana