Caterpillar hosts plants: members of the elm family (Ulmaceae) including American elm and red elm, Ulmus; hackberry, Celtis; and members of the nettle family (Urticaceae) including false nettle, Boehmeria; hop, Humulus; nettle, Urtica
Adult food: prefers carrion, dung, rotting fruit, and tree sap
Habitat: city parks, fencerows, suburbs, wooded areas with some open space
Notes: females lay eggs singly or stacked under non-host leaves, caterpillars must search for host, hibernates as adult, some stay in north, others migrate south, males perch to locate females, puddles, name comes from the white marking on the underside of the hindwing - a distinct question mark shape.
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