Butterflies likely split from nocturnal moths around 100 million years ago in present-day western North America or Central America, a new study of the winged insects finds.

Butterflies likely split from nocturnal moths around 100 million years ago in present-day western North America or Central America, a new study of the winged insects finds.

Butterflies likely split from nocturnal moths around 100 million years ago in present-day western North America or Central America, a new study of the winged insects finds. Butterflies originated in ...

Butterflies likely split from nocturnal moths around 100 million years ago in present-day western North America or Central America, a new study of the winged insects finds.

Butterflies likely split from nocturnal moths around 100 million years ago in present-day western North America or Central America, a new study of the winged insects finds.