It is hard to be sure ,but I think it is probably T. besta.
Have a look at Yutaka's website. After more than a decade of collecting in Thailand he state the records in Thailand of T. augias are doubtful.
See under note in the webpage on T. augias.
http://yutaka.it-n.jp/hes/92910001.html
What this meant is that T. augias is very rare & all previous records in Thailand are probably T. besta.
TL Seow;Cheers.
PS Correct examples of T. augias seem always to have FW spot 4 & 3 widely overlapping on the underside.
https://www.neutron.phys.ethz.ch/Lep...AZ11-1495R.jpg
https://www.neutron.phys.ethz.ch/Lep...AZ11-1495V.jpg
http://1.bp.blogspot.com/-Hp7OPF_eJ6...as-augias).jpg