. . . . . . . . . "Andrena crataegi" . . "Rosaceae" . . "jgibbs. 2014. Andrena crataegi associated species with names lookup Rosaceae. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/4164609> 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." .