. . . . . . . . . "Aceria boycei" . . "Ambrosia psilostachya" . . "James. 2015. Aceria boycei host Ambrosia psilostachya. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/1914754> 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." .