So the actual situation seems to be that the three taxa refer to two, not three species, with R. htunwini being a junior synonym of R. bipunctatus – possibly a restricted-range endemic of upland forest at the eastern end of the Himalayas, though it might occur south to Malaysia –, and R. namdaphaensis a junior synonym of R. rhodopus, a species that ranges widely from eastern India to the east and south and also occurs in lower-lying regions.
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Subsequently, frogs that matched the description of R. rhodopus were also found at Chiang Mai and in the Doi Chiang Dao mountains (Thailand), Buon Luoi (Vietnam), and Arunachal Pradesh (India).