The Xerces Society for Invertebrate Conservation says, along the California coast, 4.5 million monarchs overwintered in the ...

Scientists have recently mapped the painted lady butterfly's annual flight from equatorial Africa to northern Europe and back, the world's longest butterfly migration. In Constant Bloom, photographer ...

Delias sambawana, a butterfly that hails from Indonesia, at the Florida Museum of Natural History. Florida Museum photo by Kristen Grace and phylogeny by Hillis, Zwickl, and Gutell When Akito ...