Host Plants
confirmed
LikelySugarberry
Celtis laevigata
Quaking Aspen
Populus tremuloides
Sandbar Willow
Salix exigua
Jepson's Willow
Salix jepsonii
Red Willow
Salix laevigata
Shining Willow
Salix lasiandra
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
Gray Alder
Alnus incana
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
Western Hackberry
Celtis reticulata
Dwarf Ash
Fraxinus anomala
California Ash
Fraxinus dipetala
Oregon Ash
Fraxinus latifolia
Chaparral Ash
Fraxinus parryi
Velvet Ash
Fraxinus velutina
Narrow Leaved Cottonwood
Populus angustifolia
Fremont Cottonwood
Populus fremontii
Fremont Cottonwood
Populus fremontii ssp. fremontii
Black Cottonwood
Populus trichocarpa
Gray Willow
Salix bebbiana
Booth's Willow
Salix boothii
Shortfruit Willow
Salix brachycarpa
Short-fruited Willow
Salix brachycarpa var. brachycarpa
Brewer's Willow
Salix breweri
Drummond's Willow
Salix drummondiana
Mountain Willow
Salix eastwoodiae
Narrow-leaved Willow
Salix exigua var. exigua
Sandbar Willow
Salix exigua var. hindsiana
Geyer's Willow
Salix geyeriana
Goodding's Black Willow
Salix gooddingii
Coastal Willow
Salix hookeriana
Tail-leaf Willow
Salix lasiandra var. caudata
Yellow Willow
Salix lasiandra var. lasiandra
Arroyo Willow
Salix lasiolepis
Lemmon's Willow
Salix lemmonii
Tongueleaf Willow
Salix ligulifolia
Yellow Willow
Salix lutea
Dusky Willow
Salix melanopsis
Snow Willow
Salix nivalis
Sierra Willow
Salix orestera
Alpine Willow
Salix petrophila
Tea Leaved Willow
Salix planifolia
Mackenzie's Willow
Salix prolixa
Scouler's Willow
Salix scouleriana
Sitka Willow
Salix sitchensis
Tracy's Willow
Salix tracyi
California Mountain Ash
Sorbus californica
Mountain Ash
Sorbus scopulina
Western Mountain Ash
Sorbus sitchensis
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