Ornithoptera aesacus

Obi Island Birdwing
Male, mounted specimen
CITES Appendix II (CITES)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Papilionidae
Genus: Ornithoptera
Species:
O. aesacus
Binomial name
Ornithoptera aesacus
Ney, 1903

Ornithoptera aesacus, the Obi Island birdwing, is an extremely rare species of birdwing butterfly, endemic to the Island of Obira (formerly Obi), Indonesia. While being a very rare species, they are commercially bred and traded.

The specific epithet of Ornithoptera aesacus, is named after Æsacus, the eldest son of Priam.