There are several species of black and blue butterflies in the United States. It can be difficult to tell one from another.
Check out these photos to learn a few tips to telling black and blue swallowtail butterfly species from each other.
Click on the top few photos to see the entire photo. Some are photo strips of three or four butterflies.
Spicebush Swallowtail butterflies are missing an orange spot under its hind wings.
Pipevine Swallowtail butterflies have a tight ‘J’ shape of orange spots under its hind wings.
Eastern Black Swallowtails have blue dots on the top of their hind wings that are totally separated from each other.
Spicebush Swallowtail butterflies have blue that looks as if it was brushed on with an eye shadow brush.
Spicebush Swallowtail butterflies have larger white half-moons on the outer edges of the topsides of their hind wings.
Palamedes Swallowtail butterflies have a yellow line along their bodies and on the underside of their hind wings, running parallel to their bodies.
Black form Tiger Swallowtails have the tiger pattern in their wings. It is more difficult to see the markings when the butterfly isn’t in bright light. Tiger Swallowtail butterflies are normally slightly larger than Spicebush Swallowtail butterflies.