This is first time our blog accept photo butterfly from genus Cupha. The sub species identify as Cupha erymanthis nagara, Fruhstorfer, 1904. Species Chupa erymanthis describe first time by Drury at year 1773, and the sub species from sumatra and borneo named by Fruhstorfer at year 1904 as Cupha erymanthis nagara, Fruhstorfer, 1904.
Confirmation identification from book :
Illustrations of exotic entomology containing upwards of six hundred and fifty figures and descriptions of foreign insects, interspersed with remarks and reflections on their nature and properties. By Dru Drury. A new ed., brought down to the present state of the science, with the systematic characters of each species, synonyms, indexes, and other additional matter. By J. O. Westwood.Published 1837.
Illust. Nat. Hist. Exot. Insects 1: index, : 29, pl. 15, f. 3-4
Credit Photo :
Barlian, location : muko muko regency, south west sumatra, (border land rejang land), bengkulu province, indonesia.
special thank for Gan Cheong Weei, to let me know this ID.