The Scarlet Mormon (Papilio deiphobus rumanzovia) is a butterfly of the Papilionidae family. It is found in the Philippines, but has been recorded as a vagrant to southern Taiwan.
The species was named by Johann Friedrich von Eschscholtz after Nicholas Rumanzow, Chancellor of the Russian Empire. It has traditionally been regarded as a species of its own rather than a subspecies of Papilio deiphobus; the former treatment is still preferred by some.
The wingspan is 120�140 mm. The male strongly resembles the male Papilio ascalaphus, but lacks the tail at the bottom wing. In contrast, the female has distinct red markings on the wings.