The team promptly named it Ranitomeya aetherea, after its dominant trait—long, sky-blue lines along the length of its body. The frog also has copper-colored legs with brown spots and a head that ...

The diversity of body parts for ribbitting is astounding. Some males serenade with a pair of separate puff-out disks like padded headphones that slipped down the frog’s neck, throbbing in ...