Papilio antimachusPhoto by Luis Miguel Bugallo Sánchez (Lmbuga Commons)(Lmbuga Galipedia); CC-BY-SA-3.0 The Giant African Swallowtail (Papilio antimachus) is a species of giant butterfly in the family of swallowtail butterflies. As a giant butterfly, Papilio antimachus belongs to the family Papilionidae and has a wingspan of between 7.1 and 9.1 inches. It is not unusual to see wings that can measure 10 inches or more from tip to tip.