I was referring to pic 1 all these while.
Pic 2 is clearly P. darlisa melema (form -darlisa).

The lepindex site at the BMNH still list Penthema binghami as a valid species.However the site is prone to errors as the entries are dependent on the data available and the interpretation of it.

In the Yutaka site, of the records taken from literatures, some are not properly verified.

At the mimetica site he had examined the holotype(original) in BMNH as well as the types for taxa annamitica & telearchides which are usually ssp of P. binghami.
It is telling that of the specimens of mimetica examined there are only two.
1 from Mukdarhan by a local catcher in 1985.
The other in Hup Bom by Godfrey in 1914 lodged in BMNH.
This means ssp mimetica is very rare in Thailand.

At the melema site, he had examined the holotype as well as paratypes(additional specimens lodged for reference.)
He had examined 20 specimens of both what he considered as f-binghami and f- darlisa from the Chiang Rai area taken by a local catcher.

I am quite confident that according to Yutaka pic 1 is f-binghami & pic is f-darlisa of Penthema darlisa melema.

As for P. darlisa mimetica Yutaka have only seen 2 specimens taken long ago.
The Cambodian records are not verified properly.

TL Seow