Horaga albimacula ssp?

Moore 1882 -

This is a new record for Thailand, and photographs from Koh Pha Ngan have been identified as being this species. It is very similar on the underside to H. chalcedonyx, and the easiest way to differentiate the two is by the upperside, which is brown in H. albimacula, but dusted blue, basally, in H. chalcedonyx.

However, there is no collected specimen available for study, so its exact identity can not be ratified at the moment.

This is a species found in secondary vegetation and is considered very rare.

Flight Period

        x     x     x  


22 - 24mm

Early Stages

Detailed life history information is available from the following resources. S Igarishi - Life Histories of Asian Butterflies, Volume2, Page 582.

Larval Foodplant

In Taiwan, the species has been bred on Glochodion philippicum (Euphorbiaceae) and Deutzia pulchra (Saxifragaceae)


As the subspecies found here is not known, it could be either H. a. viola, which is found in Myanmar and Laos, or the southern ssp. H. a. albistigmata which can be found in Malaysia. Koh Samui's location would suggest the latter, but it remains a matter of conjecture until a collected specimen is obtained.