We are all used to seeing caterpillars hide themselves away and emerge as butterflies or moths, but the species featured in ...

There are more than 120 species of butterflies in western Pennsylvania, and the North American Butterfly Association wants ...

However, these two tiger swallowtail species can hybridize so I am leery of trying to identify them based upon the subtle variations in wing patterns that distinguish the two. So, I will lump them ...

A new species of tiger swallowtail butterfly that emerges around the summer solstice was found from cryptic specimens in the Northeast.

A new species of tiger swallowtail butterfly that emerges around the summer solstice was found from cryptic specimens in the Northeast.

A new species of tiger swallowtail butterfly that emerges around the summer solstice was found from cryptic specimens in the Northeast.

The butterfly appears to be a hybrid between two known tiger swallowtail species — P. glaucus and P. canadensis — but because it lives in a range where neither of these species are present ...

The butterfly appears to be a hybrid between two known tiger swallowtail species — P. glaucus and P. canadensis — but because it lives in a range where neither of these species are present ...

A new species of tiger swallowtail butterfly that emerges around the summer solstice was found from cryptic specimens in the Northeast.

A new species of tiger swallowtail butterfly that emerges around the summer solstice was found from cryptic specimens in the Northeast.