This gorgeous big brown moth has a wingspan of 10 cm (3.9 inches). Found this info ... which also explains why I wondered if it was a butterfly at first: "Erebus terminitincta is an impressive large moth. It has dark brown wings with large eye spots and a broad white band that curves round the centre of the fore wings and rear wings. The eyes are prominent and antennae are filaments held out in front. It has a fluttering flight and moves like a large black and white butterfly." (See reference website)
Hills overlooking Manila.