Red abdomen with about six black spots on its back. Wings are not transparent.
I'm calling this L. ciliatus because the it definitely has long hairs and red-spotted petals, but frankly the pics of this species and L. bicolor look almost identical to me, and I don't know where this transparent membrane between the calyx lobes that the keys mention is supposed to be.
I guess this is right but it's way late in the season or it...
I'm seeing what looks like a fused sheath at the base of the leaf, so I'm calling this L. curtipes instead of L. douglasii, but I would love confirmation if you know your milkvetches. This was a spreading plant growing in the rocky talus by the summit of Fremont Peak.
With a big bloom of chia.