Appearance: Black above with row of pale spots along trailing edge of wings; more evident on females. Male above has blue iridescence on hindwing; much less obvious on females. Hindwing below has marginal row of 7 orange spots on bluish background. Flight is low and fluttery, flutters wings even when perched.
Size: Large; greater than 2 1/2 inches
Habitat: Foothills, fields, stream bottoms and gardens
Season: Early spring to late fall. Wanders north, especially seen along Front Range after a strong and persistent southerly flow
Larval Foodplant: Pipevines
Did You Know…
Caterpillars feed on noxious pipevines,and therefore adults are distastful to birds. Several species such as Spicebush Swallowtail, female Black Swallowtail and Eastern Tiger Swallowtail (black form) mimic the Pipevine.
Species Gallery (click to enlarge)