Wild Black Cherry Cats
When I got some fresh cherry leaves for my red-spotted purple cats, I didn't notice the cherry dagger moth caterpillar on it. After I got it in the cage, I saw it and started to put it back onto a cherry tree, but changed my mind - I'll raise the moth myself. Red-spotted purples co-exist on cherry trees with many other leps - tiger swallowtails, cherry dagger moths, cecropia moths, tent caterpillars, etc. It reminded me of what a great host tree Prunus serotina is!
Here's a close-up of the little cherry dagger moth -
The last instar for cherry dagger moths looks very different from the one in the picture, so I'll get to see that one in the flesh.