. . . . . . . . . "Bombus citrinus" . . "Echinacea" . . "Jen Knutson. 2010. Bombus citrinus associated species with names lookup Echinacea. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/5290578> 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." .