Diet Overlap

Papilio polyxenes (Eastern black swallowtail)
Battus philenor (pipevine swallowtail)

Common Diet

Asclepias syriaca (broadleaf milkweed)
Cirsium vulgare (Spear Thistle)

Common Habitat

Calvin College Ecosystem Preserve
Carlsbad Caverns National Park

Attributes / relations provided by
♦ 1Study of Northern Virginia Ecology