Host Plants
confirmed
LikelyGray Alder
Alnus incana
Mountain Alder
Alnus incana ssp. tenuifolia
White Alder
Alnus rhombifolia
Red Alder
Alnus rubra
Resin Birch
Betula glandulosa
Water Birch
Betula occidentalis
Arching Ceanothus
Ceanothus arcuatus
Mountain Whitethorn
Ceanothus cordulatus
Buckbrush
Ceanothus cuneatus
Buckbrush
Ceanothus cuneatus var. cuneatus
Pine Mat
Ceanothus diversifolius
Fresno Ceanothus
Ceanothus fresnensis
Coast Whitethorn
Ceanothus incanus
Deerbrush
Ceanothus integerrimus
Deerbrush
Ceanothus integerrimus var. macrothyrsus
Lemmon's Ceanothus
Ceanothus lemmonii
Chaparral Whitethorn
Ceanothus leucodermis
Little Leaf Ceanothus
Ceanothus parvifolius
Pinemat
Ceanothus prostratus
Mahala Mats
Ceanothus prostratus var. occidentalis
Large Leaved Mahala Mat
Ceanothus prostratus var. prostratus
Dwarf Ceanothus
Ceanothus pumilus
Blueblossom Ceanothus
Ceanothus thyrsiflorus
Woollyleaf Ceanothus
Ceanothus tomentosus
Tobacco Brush
Ceanothus velutinus
Narrow Leaved Cottonwood
Populus angustifolia
Fremont Cottonwood
Populus fremontii
Quaking Aspen
Populus tremuloides
Black Cottonwood
Populus trichocarpa
Booth's Willow
Salix boothii
Brewer's Willow
Salix breweri
Mountain Willow
Salix eastwoodiae
Sandbar Willow
Salix exigua
Narrow-leaved Willow
Salix exigua var. exigua
Sandbar Willow
Salix exigua var. hindsiana
Geyer's Willow
Salix geyeriana
Goodding's Black Willow
Salix gooddingii
Jepson's Willow
Salix jepsonii
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
Tongueleaf Willow
Salix ligulifolia
Yellow Willow
Salix lutea
Dusky Willow
Salix melanopsis
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
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