. . . . . . . . . "Centris aethyctera" . . "Stigmaphyllon retusum" . . "Richard Joyce. 2016. Centris aethyctera interaction->visited flower of Stigmaphyllon retusum. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/5028903> 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." .