. . . . . . . . . "Andrena crataegi" . . "Spiraea" . . "Jim Spetz. 2017. Andrena crataegi nectar / pollen delivering plant Spiraea. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/6480802> 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." .