. . . . . . . . . "Papilio rutulus" . . "Ursus americanus" . . "Mike Patterson. 2011. Papilio rutulus associated species with names lookup Ursus americanus. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/2561335> 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." .