. . . . . . . . . "Trichopoda pennipes" . . "Eupatorium perfoliatum" . . "aarongunnar. 2016. Trichopoda pennipes nectar plant Eupatorium perfoliatum. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/3805338> 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." .