. . . . . . . . . "Pyrrharctia isabella" . . "Asteraceae" . . "Larry Clarfeld. 2016. Pyrrharctia isabella insect host plant Asteraceae. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/3788796> 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." .