Photographed in Mae Hong Son, nw Thailand, mid elevation forest. This could well be something common, but I am having issues identifying it. My initial thoughts in the field were Neptis hylas, but the position of the small spot on the edge of the costa is too offset to be this species.

The underwing dark edges to the white bars rule our Neptis soma.

This left me wondering if this might be Neptis capnodes? (The sub marginal spots being rather elongated).
Another possibility might be Neptis Sappho, but the underside of this species is rusty-red as far as I know, although the specimen looks worn.

Comments on this appreciated.
With thanks.

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