Black Swallowtail Visitor, Caterpillar, and Eggs, probably
In my front yard today I noticed a raggedy swallowtail with most of the lower parts of her body torn away. I use the 'red eye' at the base of a black swallowtail's hindwings to identify it, so I couldn't be sure, but something said black swallowtail about this butterfly. So, I checked the rue nearby, didn't find anything, then went outside to check the rue in the garden and found a caterpillar, several instars along. I looked for more, but couldn't find any. I went in the house, stayed a while, and when I came back out, I looked again. I'm pretty sure I've found an egg on the rue in the front yard, and several on some wild chervil in a bed in the front yard. BST eggs are so small, I'm not absolutely positive these are eggs. I ordered and planted wild chervil last year, thinking it might be a host for black swallowtails, being in the carrot family. Its leaves are wider than what BSTs eat when they eat dill or fennel, and I was hoping it would hold up in the heat of summer, which dill and rue don't, at least not down here. The wild chervil has indeed held up, maybe too well. I've found out too late that it's considered invasive. It has spread (through seeds) all around the bed, so I may live to regret having planted it, but if it makes a good host plant for black swallowtails, it'll be worth pulling up some unwanted volunteers.
I tried to make a picture of what I think are eggs, but the camera wouldn't focus clearly on them. This new camera has a great zoom, but its macro setting is no better than the other cheaper point and shoots I've owned.
Here's the caterpillar -