
Heteropsis sp. Marojejy, Madagascar
Based on this list of butterfly species of Madagascar...
https://en.wikipedia.org/wiki/List_of_butterflies_of_Madagascar
...my guess is that this one may be from the Heteropsis or Strabena genus, but finding an exact match is a challenge due to a lack of reference images. Key identification clue is a single black eye with single white dot and a red/orange outline. Unfortunately, I don't have any other perspective.
Update: identified by David Lees from the Natural History Museum, South Kensington.

''Heteropsis erebina'' is a butterfly in the Nymphalidae family. It is found in northern Madagascar. The habitat consists of forests and forest margins.
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