Chalcedon Checkerspot
Euphydryas chalcedona
CA Special Concern
California Species of Special Concern
Medium butterfly with bold red-orange and cream checkerboard pattern. Host plant-specific to paintbrush and owl's clover. Locally variable populations indicate specialized habitat requirements in Bay Area foothills.
Plants that support Chalcedon Checkerspot
61 plants
California Chia
Salvia columbariae
annual
Larval Host
Chinese Houses
Collinsia heterophylla
annual
Larval Host
Coast Wallflower
Erysimum capitatum
perennial herb
Larval Host
Common Woolly Sunflower
Eriophyllum lanatum var. achilleoides
perennial herb
Larval Host
Heart leaved keckiella
Keckiella cordifolia
shrub
Larval Host
Indian Warrior
Pedicularis densiflora
perennial herb
Larval Host
Interior Goldenbush
Ericameria linearifolia
shrub
Larval Host
Silver bush lupine
Lupinus albifrons
shrub
Larval Host
Sonoma Mountain Pride
Penstemon newberryi var. sonomensis
perennial herb
Larval Host
Yellow Bush Penstemon
Keckiella antirrhinoides
perennial herb
Larval Host
Yerba Santa
Eriodictyon californicum
shrub
Larval Host
Blue Dips
Dichelostemma capitatum
geophyte
Larval Host
Brewer's Ragwort
Packera breweri
perennial herb
Larval Host
Butterfly Mariposa Lily
Calochortus venustus
geophyte
Larval Host
California Ash
Fraxinus dipetala
tree
Larval Host
California Seathrift
Armeria maritima ssp. californica
perennial herb
Larval Host
California Wild Rose
Rosa californica
shrub
Larval Host
California goldfields
Lasthenia californica
annual
Larval Host
California pearly everlasting
Pseudognaphalium californicum
perennial herb
Larval Host
Canyon Dudleya
Dudleya cymosa
succulent
Larval Host
Canyon Sunflower
Venegasia carpesioides
perennial herb
Larval Host
Chamise
Adenostoma fasciculatum
shrub
Larval Host
Clustered Broomrape
Aphyllon fasciculatum
perennial herb
Larval Host
Common Fiddleneck
Amsinckia menziesii
annual
Larval Host
Deerbrush
Ceanothus integerrimus
perennial herb
Larval Host
Distant Phacelia
Phacelia distans
annual
Larval Host
Dotseed Plantain
Plantago erecta
annual
Larval Host
Exserted Indian Paintbrush
Castilleja exserta subsp. exserta
annual
Larval Host
Foothill Penstemon
Penstemon heterophyllus
perennial herb
Larval Host
Frying Pans
Eschscholzia lobbii
perennial herb
Larval Host
Glandular Layia
Layia glandulosa
perennial herb
Larval Host
Golden yarrow
Eriophyllum confertiflorum
shrub
Larval Host
Mountain Coyote Mint
Monardella odoratissima
perennial herb
Larval Host
Narrowleaf mule ears
Wyethia angustifolia
perennial herb
Larval Host
Ninebark
Physocarpus capitatus
shrub
Larval Host
Oregon Bigroot
Marah oregana
vine
Larval Host
Popcorn-flower
Plagiobothrys nothofulvus
annual
Larval Host
Rayless Arnica
Arnica discoidea
perennial herb
Larval Host
Sticky Monkey Flower
Diplacus aurantiacus
shrub
Larval Host
Sugarbush
Rhus ovata
perennial herb
Larval Host
Texas Indian Paintbrush
Castilleja foliolosa
perennial herb
Larval Host
Vervain
Verbena lasiostachys var. scabrida
perennial herb
Larval Host
Whitehead Mule-ears
Wyethia helenioides
perennial herb
Foliage
Woodland Sunflower*
Layia gaillardioides
annual
Larval Host
Woolly Mule's Ears's
Wyethia mollis
perennial herb
Larval Host
American Cow-parsnip
Heracleum maximum
perennial herb
Nectar
Bird's-eye Gilia
Gilia tricolor subsp. tricolor
annual
Nectar
Blue Field Gilia
Gilia capitata
annual
Nectar
California Coffeeberry
Frangula californica
shrub
Larval Host
California Goldenrod
Solidago velutina ssp. californica
perennial herb
Nectar
California Lilac (Blue Blossom)
Ceanothus thyrsiflorus
shrub
Larval Host
California Yampah
Perideridia californica
perennial herb
Larval Host
Dense-flower Indian Paintbrush
Castilleja densiflora subsp. Densiflora
annual
Nectar
Ithuriel's Spear
Triteleia laxa
geophyte
Nectar
Mariposa Lily (Yellow)
Calochortus luteus
geophyte
Nectar
Ocean Spray
Holodiscus discolor
shrub
Larval Host
Pink Honeysuckle
Lonicera hispidula
vine
Nectar
Ruby Chalice Clarkia
Clarkia rubicunda
annual
Nectar
Sky Lupine
Lupinus nanus
annual
Nectar
Tarweed
Madia elegans
annual
Nectar
Woodbalm
Lepechinia calycina
shrub
Nectar