T. oblongomaculatus is the only Troidesspecies found as far east as New Guinea. It has been assumed[by whom?] that the species originated in the Moluccas and later penetrated into Melanesia. It is a common species, the larva of which feed on Aristolochia tagala.
Parsons, M. 1983 Notes on the courtship of Troides oblongomaculatus papuensis (Papilionidae) in Papua New Guinea Journal of the Lepidopterists' Society 37:83-85 pdf
Kurt Rumbucher and Oliver Schäffler, 2005 Part 21, Papilionidae XI. Troides IV. helena-group. in Erich Bauer and Thomas Frankenbach Eds. Butterflies of the World. Keltern : Goecke & Evers ISBN978-3-937783-09-3