- BND: Acmon Blue; Icaricia acmon (Westwood, [1851])
- BNA: Lupine Blue; Plebejus lupini
- NDC: ICAC
- Habitat: Exposed flats along upper slopes in badlands, where it patrols and takes nectar at its larval host, Eriogonum flavum
- Larval food: Eriogonum spp., also reportedly Astragalus, Lupinus
- Adult flight: Two broods, June and August, the second being synchronous and sympatric with flight of Apodemia mormo
- References: Royer 110, Ferris & Brown 206, Scott 411
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