. . . . . . . . . "Larus occidentalis" . . "Amphistichus argenteus" . . "Don Endicott. 2016. Larus occidentalis second associated species with names lookup Amphistichus argenteus. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/3288234> 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." .