Since these things never seem to stay still, in flight characters are useful: buttery yellow, really big. If they stay still for a sec, two tails on each hindwing, pencil thin striping.

Did I get this right? Are there "dirty" acmons, and why isn't this a Lupine Blue?

Another small, greem, metallic bee, 5-8 mm, feedin on Acmispon. Halictidae?

Large black bee feeding on grindelia.

Many thanks to Liam for finding this and countless other butterflies today. Had a blast and learned a ton.

Parasite on chemise

A lifer for me...