Eastern Tiger Swallowtail on Mountain Laurel
Papilio glaucus
Bradford County, PA
The Tiger Swallowtail is one of our largest and most
immediately recognizable of butterflies. They are also common enough
that nearly everyone has seen one. Nearly five inches across and
patterned with bold yellow and black stripes, it is easy to see where the
Tiger Swallowtail got its name. The caterpillars feed on the leaves
of cherry, tulip trees, and lilacs, while the adults drink nectar from
a wide variety of flowering plants. They are often drawn to gardens.
The caterpillars of this species are just as distinctive as the adults,
the caterpillars being a light green and possessing large black and orange
eyespots. Tigers are not the only Swallowtail native to the state.
They are joined by Black Swallowtail, Pipevine Swallowtail, and Spicebush
Swallowtail, although the latter three are less common and less boldly
colored.