. . . . . . . . . "Bombus flavifrons" . . "Spiraea douglasii" . . "amawal. 2017. Bombus flavifrons associated species with names lookup Spiraea douglasii. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/7036887> 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." .