Species: Athyma asura Moore, 
Common name(s): The Studded Sergeant
Photography location: Cuu Thac-Tu Son (Hoa Binh Prov.)
The genus Athyma is represented in Vietnam by 15 species – perius, pravara, asura, larymna, kanwa, jina, opalina, orientalis, selenophora, zeroca, whitei, cama, nefte, ranga and punctata (Monastyrskii & Devyatkin, 2016).
A. asura is a distinctive Athyma with hindwings showing a series of white postdiscal white spots, each of them bears a small black spots in the middle.
My camera bag was a fine bait; this specimen poses patiently while sucking sweat