. . . . . . . . . "Nymphalis antiopa" . . "Populus tremuloides" . . "Don Sutherland. 2017. Nymphalis antiopa host plant Populus tremuloides. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/6764642> 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." .