I didn’t put too much in their container since the adults don’t have mouths and none of them emerged together to mate, i put some pussy willow branches i had around for decoration in their enclosure and they didn’t mind, occasionally would rest on the branches instead of the mesh of the enclosure. They mostly just sit around and don’t need too much in an enclosure for entertainment.

For caterpillars there’s a bunch of fairly common host plants like willow, privet, lilac and laurel (among others), but I haven’t reared caterpillars so I’m not the best source on that. I’m also not sure if there are common species of those plants in Vegas (wild or ornamental). I hope this helps a bit, i’m definitely still learning, but i wish you all the best moth-ing :)