Mystery Moth

I was inspired to try and identify a lovely Moth I found on our bedroom window back in July after I saw the lengths fellow blogger Denis Wilson went to in order to identify a pretty mystery moth of his own (Scoliacma bicolora)

Denis went straight to the top and asked some of my CSIRO colleagues in the Australian National Insect Collection for advice.  I took a look at the reference Denis gave to Australian Moths On-line, and the diversity of Australian Moths is bewildering!  So, it looks like I will need to find a friendly expert too - maybe there is one out there in blog-land?! 

Post update - see the comments below for an i.d. (Nyctemera secundiana) and some useful info, thanks to fellow bloggers Martin and Denis!  The genus is commonly referred to in Australasia as the 'Magpie moth'.