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Arrowhead blue butterfly

(c) Bill Bouton, some rights reserved (CC BY-NC-ND)

Arrowhead blue butterfly

Glaucopsyche piasus

insectView on iNaturalist

CA: Endangered, CA Special Concern

California Endangered; Species of Special Concern

Plants that support Arrowhead blue butterfly

2 plants

Broad-leaved Lupine

Lupinus latifolius var. latifolius

critical

perennial herb

Specialist on lupine hosts, larvae feed on flower buds and foliage

Bay Area nativeKeystone species

Silver bush lupine

Lupinus albifrons

critical

shrub

Critical larval food plant for caterpillars

Bay Area nativeKeystone species