The Schaus Swallowtail Butterfly, because of the decline of its tropical hardwood hammock habitat of Miama-Dade and Monroe counties in Florida, was listed on the threatened species list in 1976. Other causes for the situation included increased mosquito control practices. Its situation was changed to endangered in 1984. Two hurricanes, Andrew in 1992 and Georges six years later, further impacted the numbers to perhaps a few dozen. It habitat is subtropical dry forests, including areas formerly farmed and since re-grown. Adults feed on the nectar from the blossoms of wild tamarind, cheese shrub, and guava.