Butterflies on the mistflower

Late this afternoon, I went outside to soak up some sunshine. While I relaxed on our bench, I watched the butterflies flit around the fragrant mistflower. Surely, I thought to myself, these must be the last of this year's butterflies, mostly skippers (I think). I got up and scrunched down beside the flowers for a closer look. So pretty! Camera time! I spotted some bees, too....

Fiery skipper
(Hylephila phyleus)

Clouded skipper
Lerema accius

I'm guessing a Mexican cactus fly (Copestylum mexicanum)...
UPDATE: On Bugguide.net, a reply to my ID inquiry: "You've nailed it. And it's a girl."
Ron Hemberger

A rare queen (they're mostly gone now)

A frisky red admiral (my favorite butterfly)

And a lone bee!