. . . . . . . . . "Bombus melanopygus" . . "Arnica latifolia" . . "John Brew. 2011. Bombus melanopygus associated species with names lookup Arnica latifolia. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/135179> 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." .