Butterflies (Papilionoidea) come in a remarkable variety of colors and patterns, from the orange majesty of the monarch to the lustrous red and blue of the peacock butterfly, but all butterflies ...

The blue moon butterfly is one of them. In 2005, Hurst got an email from his colleague Sylvain Charlat, who was traveling through the Pacific and checking in on the blue moon.

In one of the swiftest examples of evolutionary adaptation ever observed, scientists have discovered that male blue moon butterflies (Hypolimnas bolina) on the Samoan island of Savaii developed ...

When an invasive bacteria ravaged the male embryos of the Blue Moon butterfly, it left populations that were nearly entirely female. But the males made an extraordinary comeback, going from 1 ...

Butterfly specimens in museums are silent witnesses of evolutionary change. They chronicle the turning tides of a battle between the blue moon butterfly and a male-killing bacterium called ...

The blue is the female part and the yellow is the male. Wikimedia Commons/Notafly These characteristics and patterns are conferred by genes on the butterfly's sex chromosomes.

The left, male side is slightly smaller, black with iridescent blue, purple and green colorings. “It just gave me goosebumps, it was a total surprise, something I never expected to see,” Johnson said.

The El Segundo Blue Butterfly has been on the federal list of endangered species since the 1970s—will habitat restoration save the ... Only the top portion of the male butterflies’ wings are blue.

An unusual butterfly that is half male and half female recently caught the eyes of a volunteer at a butterfly exhibit at Drexel University in Philadelphia. Chris Johnson, a retired chemical ...

PORTER – A 1-inch butterfly in a strip of oak forest along Indiana's Lake Michigan shore might be a global-warming harbinger of sorts. The federally endangered Karner blue butterfly has been ...