Might be a Tagiades litigiosus litigiosus (Water Snow Flat).... look like species #280.

C&P 4 pg 344

Key for separation of the species of Tagiades:

para 16: Upper hindwing tonal area reaches above vein 4: marginal spots at the end of veins 1b,2 and 3 subequal,ill defined and usually conjoined .

Horace shot match Plate 53 fig 27 except for the white abdomen.

specimens IDed as Tagiades litigiosus and have white abdomen are as follows:


Tagiiades at HK site

Tagiiades litigiosus at Thaibug site