“” Eastern tailed-blue. H .H. Fox Photography / Getty Images A North American native, the Eastern tailed-blue has delicate tails extending from the edges of its hind wings. The upper side of the males’ wings is a rich blue, while females are often grayish with a hint of blue. The underside of their wings typically […]

9 Blue Butterfly Species You Won’t Believe Are Real


Eastern Tailed-Blue
Eastern tailed-blue. H .H. Fox Photography / Getty Images

A North American native, the Eastern tailed-blue has delicate tails extending from the edges of its hind wings.

The upper side of the males’ wings is a rich blue, while females are often grayish with a hint of blue. The underside of their wings typically shows a series of black spots, helping with identification.

Adults are active in spring and summer — and like other butterflies, they rely on specific plants for their larvae.