It's not a butterfly — it's a moth! Learn how to identify the promethea silk moth, a beautifully patterned backyard visitor.

This story appears in the June 2016 issue of National Geographic magazine. Light green, long winged, and roughly the size of a playing card, the luna moth is a striking creature. It’s a clever ...

The big, pale green swallow-tailed luna moth is an example of all of ... the ultronia’s red and black, and the Io moth’s huge, eye-like spots – which are probably meant to scare away predators.