The absence of a spot at the inner edge of the hindwing is rather confusing. I assume this is a Potanthus, as general features match. The veins are darkened and the spots in FW spot 4 and 5 are slightly overlapping on one side. This looks good for P. mingo to me. Initially I thought P.omaha, but the altitude at 1,300 metres is far too high. From Doi Inthanon, n Thailand, 15 Jul 24. Many thanks.