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Chersonesia risa belongs to the family Nymphalidae in the sub-family Cyrestinae. These little butterflies flit regularly from spot to spot, but never stray far from their favoured places. They will often perch momentarily on the underside of a leaf before fluttering daintily to another leaf nearby, on which they settle with wings fully outspread and held flat against the surface. At other times they like to land on the ground, usually on wet leaf litter, and will spend long periods probing among the rotting vegetation, at all times keeping their wings outspread.
This species breeds in primary rainforest at elevations between above 800m. At lower altitudes it is gradually replaced by C.rahria, in which the outer lines on the forewings are wavy rather than straight.