. . . . . . . . . "Polygonia c-album" . . "Urtica dioica" . . "stefanodirektor. 2016. Polygonia c-album eating Urtica dioica. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/3061098> 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." .