Byasa rhadinus is a species of butterfly from the family Papilionidae.
[3] Originally described as Papilio mencius Felder, 1862 subsp.
rhadinus Jordan, 1928, this butterfly was considered conspecific with Atrophaneura mencius (e.g., Collins & Morris 1985, Fujioka et al. 1997).
It has been reclassified as a viable species by Chou (1994).
This Papilionidae-related article is a stub.