Well, I checked on my Sulphur cats today after I had high tea (yummy). And I can't believe no one called me out on this. And that I missed it myself, although I'm blaming it on the poor lighting combined with the Old Fashioned I had with dinner. The caterpillar I saw in the morning that was molting was definitely a Cloudless Sulphur. Green, yellow stripe. The pair I saw later in the day are Orange-Barred Sulphurs. I took a better shot of them a few minutes ago.
I didn't see the Cloudless Sulphur today, but they can blend well, so I'm not too worried. I tried to check as much of the plant as I could. I keep expecting for the valets to ask me what I'm looking at, but maybe they're used to eccentric rich people in Naples. The plant did get egg-bombed, though. See all those little football-shaped things on the edges of the leaves? Sulphur eggs!