. . . . . . . . . "Papilio alexanor" . . "Ptychotis saxifraga" . . "stefanodirektor. 2017. Papilio alexanor eating Ptychotis saxifraga. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/7101027> on 05 Apr 2018." . . . . "http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world." .