Many swallowtails have colorful names that help with identification ... The giant swallowtail caterpillar has a smeary black and white pattern, and when it’s still small, it’s easy to miss ...

Yes! The caterpillar most frequently found on parsley, dill, fennel, and related plants are the larval forms of the black swallowtail (Papilio polyxenes) butterfly. This species, sometimes known ...