New record of Heraclides a. astyalus (Godart) (Lepidoptera: Papilioninae: Papilionini) on the northern São Francisco river, Brazil

A single male of Heraclides a. astyalus was collected in the Catimbau National Park, Buique, Pernambuco, located in the semi-arid region of northeastern Brazil. It is the first record for the species in the Caatinga domain and the first record for the subspecies in latitudes above the Sao Francisco river.