I don't think this moth matches the S. felderi images on LBH. The AFD recognises the S. felderi and a synonym. I'm yet to see an image from real life identified as S. felderi online. BOLD apparently has none. The ALA has Sentica (genus) images but I;m not sure any match this moth.
I think that the concept of detailed diagnostic entomological drawings had not been developed before 1864, and Scotts' drawings were just sketches, so I think the fit is remarkably good. ,,,.....
I thought while close this moth didn't quite match P. baliodes. That's why I suggested the precise link above ie. https://biocache.ala.org.au/occurrences/c0e34473-085e-407e-8050-e0c0ff907d92 That is to an image identified as Pychanisa (genus) on the ALA..