I found this huge moth dead on the ground yesterday on Jeju Island, South Korea, where I work, and was wondering if anyone could identify it for me.
I guessed it was some kind of atlas moth from the size, but couldn't find any pictures like it on the internet and haven't seen anything like it before. Its wingspan is almost 16cm across and it has 4 clear 'windows' in its wings which are covered by transparent membrane. It also had what looked like an egg mass leaking from its abdomen and sticking it to the ground. I (and my biology students) would be very grateful for an ID if any of you lepidopterists recognise it. Lighter for scale.