Papilio candensis is a very important species to the diversification of swallowtails! A species of swallowtail that can be found in the Appalachia region (Papilio appalachiensis) is a hybrid species from Papilio candensis and Papilio glaucus. These interbreeding species have resulted in a new species that has a mosaic phenotype, which is hypothesized to be caused by the combination of sex-linked traits (Kunte et al., 2011).

• The Canadian Tiger Swallowtail was not recognized as its own species until the early 1990's . Before then sources believed that the Canadian Tiger Swallowtail was a subspecies of the Eastern Tiger Swallowtail. The two types of swallowtails are very closely related though. One remarkable difference between the Canadian Tiger Swallowtail and the Eastern Tiger Swallowtail, is that the Canadian Tiger swallowtail can strive in colder temperatures than the Eastern Tiger Swallowtail. But, vice versa, the Eastern Tiger Swallowtail can survive higher temperatures and heat.