Scientists have for the first time genetically engineered a butterfly, inserting a jellyfish gene into an African butterfly so that its eyes fluoresce green. The butterfly, Bicyclus anynana, serves as ...

One hundred years ago, a little blue butterfly flew around the dunes of San Francisco with a little green butterfly. And then people came, filling hills and valleys with houses and pushing the blue, ...

Striking olive-green eye colour allows scientists to distinguish a new butterfly species, which was confirmed using Smithsonian entomology collections. Previously unrecognized because of its ...