In just six generations of selection, they took a brown butterfly and shifted it to a rich, purple color. The species chosen for this work was Bicyclus anynana, an African species that also goes ...

It's a mystery how butterflies manage to make their brilliant wing colors, but Yale physicists got a glimpse when they took the question to the lab, breeding dull brown butterflies into purple ones.

Consider the common buckeye. It’s a mostly brown butterfly, with a few vivid eyespots and orange splashes. When Reed deleted optix, sure enough, the orange bits blackened. But unexpectedly, ...

Scientists found “large” brown butterflies living in the Andes mountains of Peru and discovered a new species, a study said. Photo from Pierre Boyer Over 15,000 feet up in the mountains of ...

She teamed up with some Yale physicists and picked a butterfly species called the squinting bush brown, which lives up to its dull name. Aside from a few eye-catching spots, it blends well with ...

Not for the Brown Argus butterfly, however. This insect seems to be bucking the trend and expanding its numbers quicker and more effectively, according to new research. Global warming is generally ...

The effect means its wings appear brown or even black when looked at from above but change to blue when viewed from the side. Andrew, who photographed the butterfly in Oversley Woods, Warks., ...

This butterfly is a talented camouflage artist. Called the Common Evening Brown, it flits about during the dayand at dusk. When it rests on a background of dry leaves, with its wings closed ...