. . . . . . . . . "Euphydryas chalcedona" . . "Scrophularia californica" . . "Liam O'Brien. 2016. Euphydryas chalcedona eating Scrophularia californica. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/2716686> 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." .