According to the U.S. Fish and Wildlife Service, their wings have a dark gray-brown color at the top, and their hindwings have a dark spot and an irregular dark line. The scarce butterfly can be ...

“I still remember when I walked into the insectary and I saw B. anynana butterflies emerging from their pupa, and I saw the [pure homozygous mutant] phenotype—the whole light brown butterfly—which was ...

In the US, butterfly populations have dropped by 22% in a decade. A new study shows climate change, habitat loss, and ...

The meadow brown butterfly’s Latin name is Maniola or ‘little spirit from hell’. It has been represented as a demon in art. The Greek word psyche means both spirit and butterfly. The Greeks ...

The Puerto Rican harlequin butterfly (Atlantea tulita) is a small, dark-brown butterfly with black and deep-orange markings. The butterfly uses the prickly bush (Oplonia spinosa) as a host plant for ...

A year-round resident of New Mexico's high mountain meadows, the highly imperiled Sacramento Mountains checkerspot butterfly relies wholly on the integrity of its remarkably limited range. This ...

Common Evening Brown: A medium-sized greyish-brown butterfly with large eyespots on its wings to ward off predators. Unlike most butterflies, this one mostly comes out at night.