Only certain subsets of swallowtails practice mimicry. Species differ in whether one or both sexes is mimetic, and whether the mimicry is monomorphic or polymorphic. A phenomenon which has received particular attention is female-limited polymorphism, in which only the females of a species are mimetic and polymorphic, often mimicking different, distantly-related aposematic butterflies. This polymorphism is seen in Papilo dardanus, the African swallowtail butterfly, whose females have three different morphs for wing color pattern: a black-and-white pattern for Batesian mimicry, a black-and-yellow pattern that resembles the males of the species, and a pattern with orange patches that resembles the elderly males of the species. Given that the males of the species, which do not have Batesian mimicry, are preyed upon much more frequently by predators than the females, an ongoing question is why females would exhibit the non-mimetic wing pattern, which would seemingly lower their fitness compared to the mimicry form. The Pipevine Swallowtail exhibits Batesian mimicry as well.