Canadian Tiger Swallowtail Butterfly (Papilio canadensis)
Smaller than Eastern or Western Tiger Swallowtails. Upperside of forewing with relatively broad black stripes; underside with marginal yellow spots merged into continuous band. Hindwing with numerous orange scales. Extremely rare black female form. Hosts plants: Leaves of birch (Betula), aspen (Populus), and black cherry (Prunus).