Papilio is a genus in the swallowtail butterfly family, Papilionidae, as well as the only representative of the tribe Papilionini. The word papilio is Latin for butterfly.[1]
It includes the common yellow swallowtail (Papilio machaon), which is widespread in the Northern Hemisphere and the type species of the genus, as well as a number of other well-known North American species such as the western tiger swallowtail (Papilio rutulus). Familiar species elsewhere in the world include the Mormons (Papilio polytes, Papilio polymnestor, Papilio memnon, and Papilio deiphobus) in Asia, the orchard and Ulysses swallowtails in Australia (Papilio aegeus, Papilio ulysses, respectively) and the citrus swallowtail of Africa (Papilio demodocus).
Older classifications of the swallowtails tended to use many rather small genera. More recent classifications have been more conservative, and as a result a number of former genera are now absorbed within Papilio, such as Achillides, Eleppone, Druryia, Heraclides (giant swallowtails), Menelaides, Princeps, Pterourus (tiger swallowtails), and Sinoprinceps. The genus as recognized by modern systems has about 200 members. The genus Chilasa is regarded as a subgenus of Papilio by some workers, as are the baggy-tailed swallowtails (Agehana), although the latter taxon is usually considered a subgenus of Chilasa.
Many of the larvae resemble bird droppings during a development stage. Adults are edible to birds and some species are mimics.[2]
In their larval form, members of Papilio typically feed upon plants of Rutaceae including common ornamental and agriculturally important species such as Citrus species, Murraya species, Choisya species and Calodendrum species. Caterpillars sequester terpenoids from their diet to produce a foul smelling oil used in defence.
Listed alphabetically within groups.[3]
subgenus: Papilio Linnaeus, 1758
species group: machaon
subgenus: Princeps Hübner, [1807]
species group: antimachus
species group: zalmoxis
species group: nireus
species group: cynorta
species group: dardanus
species group: zenobia
species group: demodocus
species group: echerioides
species group: oribazus
species group: hesperus
species group: menestheus
species group: incertae sedis
species group: noblei
species group: demolion
species group: anactus
species group: aegeus
species group: godeffroyi
species group: polytes
species group: castor
species group: fuscus
species group: helenus
species group: memnon
species group: protenor
species group: bootes
subgenus: Chilasa Moore, [1881]
species group: agestor
species group: clytia
species group: veiovis
species group: laglaizei
species group: unnamed
subgenus: Achillides Hübner, [1819]
species group: paris
species group: palinurus
species group: unnamed
species group: ulysses
subgenus: Heraclides Hübner, [1819]
species group: anchisiades
species group: thoas
species group: torquatus
species group: unnamed
subgenus: Pterourus Scopoli, 1777
species group: troilus
species group: glaucus
species group: zagreus
species group: scamander
species group: homerus
subgenus: Sinoprinceps Hancock, 1983
species group: xuthus Hancock, 1983
Many species originally described in the genus Papilio have now been reclassified. For a list of selected former species see List of former species in the genus Papilio.