Host Plants
confirmed
LikelyBalsam Fir
Abies concolor
Douglas Fir
Pseudotsuga menziesii
Santa Lucia Fir
Abies bracteata
Grand Fir
Abies grandis
Balsam Fir
Abies magnifica
California Red Fir
Abies magnifica var. magnifica
Shasta Red Fir
Abies magnifica var. shastensis
Gray Alder
Alnus incana
Mountain Alder
Alnus incana ssp. tenuifolia
White Alder
Alnus rhombifolia
Red Alder
Alnus rubra
Sitka Spruce
Picea sitchensis
Fremont Cottonwood
Populus fremontii
Fremont Cottonwood
Populus fremontii ssp. fremontii
Quaking Aspen
Populus tremuloides
Black Cottonwood
Populus trichocarpa
Desert Peach
Prunus andersonii
Bitter Cherry
Prunus emarginata
Hollyleaf Cherry
Prunus ilicifolia
Hollyleaf Cherry
Prunus ilicifolia ssp. ilicifolia
Klamath Plum
Prunus subcordata
Chokecherry
Prunus virginiana
Western Chokecherry
Prunus virginiana var. demissa
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
Muller Oak
Quercus cornelius-mulleri
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
Pacific Oak
Quercus pacifica
Desert Oak
Quercus palmeri
Santa Cruz Island Oak
Quercus parvula
Shreve Oak
Quercus parvula var. shrevei
Tamalpais Oak
Quercus parvula var. tamalpaisensis
Huckleberry Oak
Quercus vacciniifolia
Interior Live Oak
Quercus wislizeni
Interior Live Oak
Quercus wislizeni var. frutescens
Interior Live Oak
Quercus wislizeni var. wislizeni
Bitter Gooseberry
Ribes amarum
Golden Currant
Ribes aureum
Golden Currant
Ribes aureum var. gracillimum
Stink Currant
Ribes bracteosum
Hillside Gooseberry
Ribes californicum
Hillside Gooseberry
Ribes californicum var. californicum
Wax Currant
Ribes cereum
Wax Currant
Ribes cereum var. cereum
Spreading Gooseberry
Ribes divaricatum
Straggly Gooseberry
Ribes divaricatum var. pubiflorum
White Flowering Currant
Ribes indecorum
Whitestem Gooseberry
Ribes inerme