. . . . . . . . . "Orgyia definita" . . "Alnus incana rugosa" . . "christine123. 2013. Orgyia definita insect host plant Alnus incana rugosa. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/9533197> 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." .