Atrophaneura (Byasa) adamsoni takakoae

Uehara 2006 - The Adamson's Rose

Koh Samui only.

Recently described, this subspecies is, in fact, the only one whose scientific description is derived from a Koh Samui specimen. The earliest known specimen from Samui was caught at Hin Lad Waterfall, near Na Thon by Masashi Maruyama in August 1986. However, the earliest specimen known was caught at Nakhon Sri Thammarat, further down the east coast of mainland Thailand in 1972. No other specimens have been found there, and, though there has been a report of a specimen from the neighbouring island of Koh Phangan, Koh Samui remains the only place in the world where this can be found on a reliable basis.

Its life history is unknown, and discovering this must be considered a matter of extreme urgency, as most of the sites where this butterfly has been found are designated for development.

This species is easily mistaken for three other species found on the Island, Pachliopacta aristolochia asteris and a female form of both Papilio memnon agenor and Papilio polytes romulus.

Flight Period

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Early Stages


Larval Foodplant



Koh Samui only (possibly Koh Phangan). Other subspecies found in Myanmar and Thailand (Kaeng Krachan northwards).