Ornithoptera croesus lydius
 
Ornithoptera croesus, also called Wallace's Golden Birdwing is a butterfly from Australasia / Indomalaya ecozone (Australia). The first description was in 1859 by Wallace. The wingspan is about 17 – 20 cm. This butterfly is a member of the family PAPILIONIDAE. Ornithoptera croesus is black. It has large orange or red areas on the wings. The females are brown and have some white and yellow spots. They are significant-larger than the males. Ornithoptera croesus (Wallace's Golden Birdwing, Goldroter Vogelschwingenfalter) is a butterfly from the Australasia / Indomalaya (Australia) ecozone. The distribution is restricted on Moluccas.