. . . . . . . . . "Vespa crabro" . . "Hedera helix" . . "Stefano Doglio. 2014. Vespa crabro nectar plant Hedera helix. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/912510> 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." .