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Rajendra tripartita
Nice spot, please consider to add to Butterflies and Moths of Indonesia mission: http://www.projectnoah.org/missions/2158...
Does look very similar, though the markings don't blend in this one. Variability could perhaps be the reason.
Interesting one. Looks like an Arctiidae, Lithosiinae, but I am not sure. Did not find a reasonable match. Nuwan??