Milkweed Butterflies Are More Murderous Than They Look

This behavior by the fluttering insects was so unusual that scientists had to invent a new word to describe it.

This Butterfly Was the First in North America That People Made Extinct

New research suggests the iconic Xerces blue butterfly may have been its own species.

This Butterfly Was the First in North America That People Made Extinct

New research suggests the iconic Xerces blue butterfly may have been its own species.

This Moth’s Name Is a Slur. Scientists Won’t Use It Anymore.

The Entomological Society of America will no longer refer to common species of insects as “gypsy moths” and “gypsy ants,” because their names are derogatory to the Romani people.

Opinion | For the Butterflies — and the Rest of Us

Stop using pesticides, in your butterfly garden and everywhere else.

Maine Residents Fend Off Poisonous Caterpillars

The caterpillars, known as browntail moths, have tiny hairs that can cause skin rashes and even breathing issues for some people.

California’s Monarch Butterflies Are Down 99%. Can This Plant Help?

A coalition of conservation groups have partnered with the state to add 30,000 milkweed plants in an attempt to restore the species’ population.