Sorry Fluorite, I have to disagree with you on this one.
I've been through Endo & Kishida's "Day Flying Moths - Chalcosiinae and Epicopeia" (vol. 8 of the Endless Collection Series, 1999) and there is no way this is a Psaphis of any species. The antennae are too pectinate for Zygaenidae, the wing shape is too broad and the pattern lacks the yellow/black combination for Psaphis. In my opinion, based on Holloway's Moths of Borneo (vol. 9), the moth in the photo is a good match for the male of Dysphania glaucescens, based on the extension of the yellow patch from the tornus beyond the postmedial fascia towards the base of the hindwing, the inclination of the yellow markings on the abdomen and the relative widths of sectioning between veins of the hindwing postmedial fascia below the discal cell (this last character separates D. glaucescens from the similar Dysphania transducta).