The Eastern Tiger Swallowtail (Papilio glaucus) and the Eastern Giant Swallowtail (Papilio cresphontes) are two distinct butterfly species that are difficult to identify but can be differentiated by several features.
Eastern Giant Swallowtail (Papilio cresphontes)
Largest butterfly in North America
The caterpillars of this butterfly species feed on various Citrus trees, including Lemon (Citrus limon), Lime (Citrus aurantifolia), Orange (Citrus sinensis), Grapefruit (Citrus × paradisi), and other related species.
Wild Lime (zanthoxylum fagara) provides food for Eastern Giant & Schaus’ Swallowtail butterfly larva, and can replace Japanese Boxwood in the yard or garden.