According to funet the Bornean ssp. is the nominate P. memnon memnon , although Fruhstofer have described memnoides 1903 from Borneo.
http://www.nic.funet.fi/pub/sci/bio/...x.html#machaon

Under P. memnon memnon is female form laomedon Cramer.
The description of f-laomedon matches well.

http://www.archive.org/stream/novita...e/314/mode/1up

As for the Charaxes, I think they are the same, since in peninsular Malaysia there are also 2 forms, one with the steely grey sheen.


TL Seow