Ariadna ariadne pallidor

Fruhstorfer 1899 - The Angled Castor

Koh Samui and Koh Pha Ngan.

The most common of the Ariadne species on Samui. Differs from A. isaeus by the white spot near the fore wing apex, and from A. merione by having only a single black discal line on both wings. Typical of the Genus, it is to be found in forests and forest edges.

Flight Period

xxxx   xxxxxxx


38 - 45mm

Early Stages

Fully known. More detailed life history information is available from the following resources: S. Igarishi - Life Histories of Asian Butterflies, Volume.1 , Page 376.

Larval Foodplant

Ricinus communis - Castor Oil Plant, Cnesmone javanica (both Euphorbiaceae)


N. E. India, to S. China and Peninsular Thailand. Other subspecies in Sri Lanka, Peninsular India and throughout Sundaland and Lesser Sunda Islands.