This morning I found at least four (I swear I counted six the first time) of these swallowtail caterpillars on the one flat-leaf parsley bolt from last year's salad box. After a quick Google image search, I have decided to let them eat however much of the parsley flower buds they like! Very pretty, especially if these will have some blue on them.
After several tries, I finally cussed the digicam into focusing on one:
|swallowtail caterpillar on my flat leaf parsley|