Why some fireflies become femme fatales in their race for survival

This lethal mating ritual happens in two genera of fireflies, Photinus and Photuris. Both of the fireflies are native to North America.

The Photuris female is able to mimic Photinus’ flashing patterns; with this deception, she answers the flash patterns of a Photinus male. He comes closer, hoping to consummate their new relationship. Instead, she captures and eats him.