In the end, I finally had success with the skipper, a first for me. It really helped to have Mary lead us to an area where she had seen them before and especially explain to us where they like to perch, how they fly, etc. This one was territorial on exposed granite boulders.
Even with just that one species, it was a spectacularly successful morning, but we saw lots of stuff – most of which I finally have names for:
The buprestid beetle Acmaeodera solitaria
Giant Agave Bugs, Acanthocephala thomasi, feeding on the sap from Agave schottii flower stalks
Gray Bird Grasshopper, Schistocerca nitens
Great Spreadwing, Archilestes grandis
Unknown robberfly, genus Efferia
Mating robberflies, Promachus atrox. Notice that the female is feeding.
caterpillar of the White-lined Sphinx, Hyles lineata, feeding on buckwheat
unknown caterpillar in the genus Cucullia, feeding on either Aster or Erigeron...this is possibly C. postera, since that species is known to feed on Aster.
Western Pygmy-Blue, Brephidium exilis
Mormon Metalmark (or "Sonoran Metalmark"), Apodemia mormo