The Thai website clearly shows the typical posture with the large spiny hind legs raised.
This plus the white banded abdomen & fringed wings indicates it has to be Stathmmopodinae after all.

A crosscheck with NHM shows only a few species of Snellenia.
Eliminating the Australian ones (which appear to be endemic) brings up 4 species. 1 spp S. latipes- Brazilian.

S. coccinea TL Himalaya.
S. tarsella TL Himalaya.
S. ignispergens. TL japan.

TL Seow