I think that this is either Alucita phricodes or A. pygmaea, both of which have only been reported in northern Australia. Butterfly House suggests that A. phricodes has lighter hind wing plumes which this one does not have. It looks like an A. pygmaea reported on ALA but it looks more like A. phricodes reported on Butterfly House.
I agree its most probably an Alucita genus moth (A Many-plumed Moth), but I'm not sure we can be conclusive regarding which species. A. phricoides (Wonga Wonga Vine P. pandorana) and A xanthodes seem likely.
The ALA shows A, phricodes has been submitted by D. Hobern at Aranda in the ACT and there are two records there for Melbourne. The recorded food plant for this species Pandorea pandorana has been widely planted in native gardens in Canberra and probably Melbourne. On a second look I think there is a close match in patterning as John Bromilow suggests. I don't think the costa pattern of A. pygmaea matches.