White ghostly moth

[Elizabeth]

Ghostlike but beautiful. Please id this moth. It feeds on the wild cinnamon tree.
-Elizabeth

[hkmoths]

Arctornis sp.

Lymantriidae.

Not really possible to say which species without dis-section of the genitalia.

Take a look at Jeremy Holloway's Moths of Borneo (vol 5. Arctornithini - gallery (http://www.mothsofborneo.com/part-5/arctornithini/gallery.php)) to see just how much diversity there is in the genus, and how many are very similar to the species in your photo!

The diversity in Hong Kong is also quite high - there are at least a dozen similar species.

cheers,

Roger.

[Elizabeth]

Just to share:
This is the caterpillar of the white ghostly moth...
5423

And this is the pupa of it. Its cast off fur coat is in the back ground.
5424

-Elizabeth