Seow, in this particular case, I don't think this is the Great Archduke (Lexias cyanipardus sandakana). Whilst the underside of this male, and probably the one that Anthony shot, does not have the pale blue colour, my view is that it's definitely not L. cyanipardus. I have specimens of L. cyanipardus from Panti Forest, and the underside is olive green shaded, instead of this reddish brown. The size also does not match.
Whilst Loke was shooting the underside, I was shooting the upperside of the same male that was in the drain. The upperside is quite obviously the common Archduke (Lexias pardalis dirteana). There may be a subspecies that does not have the blue scaling on the underside of the hindwings or just an aberration. Or is there another Lexias species that we're not aware of?
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