As many moths in Singapore are wide-ranging Indo-Australian species these websites are worth bookmarking.
http://lepidoptera.butterflyhouse.com.au/moths.html
http://www.papua-insects.nl/insect%2...20families.htm
http://tai-herminiinae.blogspot.com/...post_4558.html
Specific families.
Sphingidae
http://www.sphingidae-museum.com/dat...=anceus&subsp=
https://tpittaway.tripod.com/china/china.htm
Saturniidae.
http://wildsilkmoth-indonesia.com/pic_mala/malar.html
TL Seow: Cheers.