. . . . . . . . . "Hippodamia convergens" . . "Ambrosia psilostachya" . . "ellen hildebrandt. 2017. Hippodamia convergens host plant Ambrosia psilostachya. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/8508932> 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." .