Lexias pardalis dirteana

Corbet 1941 - The Common Archduke

Koh Samui and Koh Pha Ngan.

The two Lexias species found on Samui are impossible to tell apart on the wing. The most obvious difference is that this species has orange tips to its antennae, and the other has black tips. Both species show strong sexual dimorphism.

This is a common forest species, and can often be found, in season, feeding of fallen fruit.

Flight Period



65 - 90mm

Early Stages

Fully known. More detailed life history information is available from the following resource: ButterflyCircle Blog (courtesy of Dr. Horace Tan.)

Larval Foodplant

Cratoxylum cochinchinense (Guttiferae), Hypericum monogynum (Hypericaceae)


Peninsular Thailand and the Malay Peninsular. Other subspecies in N. E. India, Burma, N. Thailand. Also China, Hainan, Indo-China, Sundaland and the Philippines.