Papilio dardanus, the Saharan swallowtail, African swallowtail, mocker swallowtail or flying handkerchief, is a species of butterfly in the family Papilionidae (the swallowtails). The species is broadly distributed throughout Sub-Saharan Africa. The British entomologist E. B. Poulton described it as "the most interesting butterfly in the world".
Molecular studies have provided evidence that this species' closest relative is Papilio phorcas, with Papilio constantinus being the next closest (see images below). It is a member of the Papilio genus of which Papilio appalachiensis and Papilio xuthus are also members.
Papilio dardanus is the nominal member of the dardanus species group. The members of the clade are:
Papilio dardanus Brown, 1776
Papilio constantinus Ward, 1871
Papilio delalandei Godart, [1824]
Papilio phorcas Cramer, [1775]
Papilio rex Oberthür, 1886
