Delias melusina

Thanks Daniele for confirming :-)...!

I'm now convinced bayucca, especially with the torpedo-like patch. Melusina it is :-)

I think this is Delias melusina, male: Note the distance from margin to yellow spots on the hindwing (small/direct contact to margin, larger in Kuehni, no contact to margin, meaning a dark stripe between yellow and margin), the "torpedo-like" patch on the forewing and the row of spots and grey parts of the forewing, which all matches quite good with Melusina. The only difference: the spots on the forewing looks more like the ones from the female in Melusina, hte ones are slightly larger. http://www.delias-butterflies.com/index.php/groups/species-groups/group-xx/delias-melusina/

I have another possibility for you AmalludinSyahKono: Delias kuehni. Very similar to Delias melusina, but with a more marked black band on the outer hind wing, as in the case of your butterfly. What do you think? All the Delias sp. found in Sulawesi are listed here and I think this is the best match. http://www.delias-butterflies.com/distribution/indonesia/moluccas/sulawesi/