Zeuxidia amethystus amethystus

Butler 1865 - The Common Saturn

Koh Samui and Koh Pha Ngan.

A very large, and striking species, when seen flying. Its forewings have a broad iridescent blue band on the forewing, and a similarly coloured patch on the hindwing.

Not common on the islands, and can only be found in the dense forests. Like other members of this Family, it can be approached whilst feeding on the sugars from fermenting fallen fruits.

Flight Period



110 - 130mm

Early Stages

Only partially known. More detailed life history information is available from the following resources: S. Igarishi - Life Histories of Asian Butterflies, Volume.1 , Page 369.

Larval Foodplant



Thailand, Malaysia, Sumatra and Borneo