The arrival of Papilio demoleus Linnaeus, 1758 in Cyprus in 2021 signalled the species' first appearance in a country of the European Union attributable to range expansion from mainland coastal regions to the east, rather than by human-mediated activity. Molecular work on the Cyprus taxon has shown this to belong to nominotypical P. demoleus demoleus, matching exactly results of similar work carried out on specimens from Mediterranean Syria. Breeding of Papilio demoleus on three species of Citrus at various urban locations in Cyprus has been confirmed, and from which observations it is apparent that two broods were achieved in late summer/autumn of 2021. As has been the experience in neighbouring Mediterranean Turkey and Syria, overwintering success is thought likely.

Recent years have witnessed considerable range expansion of the migratory Indo-Australian papilionid Papilio demoleus Linnaeus, 1758 from the Gulf States. Following dispersal / migration into central Syria, a rapid and extensive colonisation of the eastern Mediterranean coastlines of Syria soon ensued, with penetration into neighbouring regions of Turkey and Lebanon. Further westward spread had been anticipated and here we report on the species' first appearance in Cyprus. We hypothesise that westward trans-Mediterranean migration brought small numbers of immigrants to the island, and from the pristine nature of the individuals, it is considered that those seen in August 2021 were the progeny of an earlier, unnoticed migration. We also record the Levant's first known example of marine puddling by P. demoleus.