omg, these are so cool!
I was working in my herb garden this eveneing, taking advantage of the cool weather when I spotted them.
Six green, yellow and black caterpillars devouring my lovage! I was about ready to cut it back and dispose of the offending larvae when I decided to look in my butterfly book to see what they were first. I am so glad I did!
They are Black Swallowtail larvae! Six of them! Munching happily on the lovage! I decided to let them be, I really don't use the lovage that often and if they move on to my parsley....so be it.
I really love our Black Swallowtails and am so honored that they chose to lay eggs in my herb bed! I'll be watching them closely and if I can get any fun photos I'll post them.
Here is a link to what they look like. (It was so much easier to link than to post my own, blurry photo!)
Here is a link that might be useful: Black Swallowtail caterpillars