Chalcedon Checkerspot
Euphydryas chalcedona chalcedona
Insect
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CA Special Concern
California Species of Special Concern
Large checkered butterfly with orange and black wings. Bay Area native; caterpillars feed on native thistles; vital for seed-eating songbirds.
Plants that support Chalcedon Checkerspot
5 plants
California Figwort
Scrophularia californica
perennial herb
Larval Host
Bay Area native
Coast Indian Paintbrush
Castilleja affinis subsp. affinis + Diplacus aurantiacus
shrub
Larval Host
Bay Area native
Coast Range Mule-ears
Wyethia glabra
perennial herb
Larval Host
Bay Area native
Heart leaved keckiella
Keckiella cordifolia
shrub
Larval Host
Yellow Bush Penstemon
Keckiella antirrhinoides
perennial herb
Larval Host
Bay Area native