Papilio phestus
Papilio phestus is a species of swallowtail butterfly from the genus Papilio that is found on Solomon Islands, New Britain, New Ireland, New Hanover Island, and Admiralty Island.

Description
The subcostal of the hindwing branches off from the cell at a greater distance from the base than in P. ambrax. Palpi black or with a little white scaling. Male: similar to P.ambrax , but the hind¬
wing beneath always with pure white discal spots and above always with a rather large red anal spot. Female:forewing as in the male without white marginal spots or these extremely small. The white area of the hind¬
wing smaller than in the ambrax female and purer white than in those specimens of ambrax in which the white area is reduced; the veins intersecting it always black. Larva similar to that of ambrax, but according to Ribbe’s figure the abdominal bands are interrupted above as in the western forms of polytes, and the longitudinal stripe is grey with blackish bordering.Karl Jordan in  Seitz.

Biology
The larvae feed on Citrus species.

Subspecies
Papilio phestus phestus (New Ireland, New Hanover)
Papilio phestus parkinsoni Honrath, 1886 Male the white band of the hindwing above broad, beneath on the contrary the discal spots reduced in number and size.Female with large white patch on the forewing. (New Britain)
Papilio phestus reductus Rothschild, 1915 (Admiralty Islands)
Papilio phestus minusculus Ribbe, 1898 (Solomon Islands to New Georgia Group) Males from the Solomon Islands have usually the band on the hindwing narrower and also more deeply incised and the veins are mostly thinly but distinctly black.

Biogeographic realm
This species is located in the Australasian realm.

Taxonomy
Papilio phestus is  a member of the polytes species-group. The clade members are

Papilio polytes Linnaeus, 1758
Papilio ambrax Boisduval, 1832
Papilio phestus Guérin-Méneville, 1830

See also
 East Melanesian Islands

References

Ebner, J.A. (1971). Some notes on the Papilionidae of Manus Island, New Guinea 1971 Journal of the Lepidopterists' Society 1971 Volume 25 :73-80  Figure. notes on  reductus Rothschild, 1915

External links
Butterfly corner Images from Naturhistorisches Museum Wien

phestus
Butterflies described in 1830
Taxa named by Félix Édouard Guérin-Méneville
Butterflies of Oceania
Lepidoptera of New Guinea