There aren’t any left. Sniff sniff.
I wonder if the community bed is a bad spot for the host plants? I’ve seen butterflies near the nice sunny spot, but also lots of insects–and birds. Maybe they’re sitting ducks out there? Next time, I’ll move them all into the play area dill patch…
http://www.bbg.org/gardening/article/inviting_caterpillars_into_your_garden
The caterpillars may have gone to form chrsalids(sp?)…check to see if they are around, but in another form.