Human-associated-behavior
Guides
Asterocampa celtis
Hackberry Emperor
Asterocampa celtis, the Hackberry Emperor, is a North American brush-footed butterfly (Nymphalidae) whose life cycle is entirely dependent on hackberry trees (Celtis spp.). Adults are known for their rapid, erratic flight and frequent habit of landing on humans to feed on sweat. The species ranges across much of the eastern and central United States, with larvae feeding exclusively on hackberry foliage.