Ben Caruthers sent me this mystery set of wings on the right which he identified by their distinctive coloration as from a picture winged antlion. A few days later he photographed the living specimen above and speculated that it might be an adult from antlion pits he had filmed a little earlier, seen in this Youtube video. That made a lot of sense until we "dug deeper" into the life history of a PWA.
Antlion adults look like a damselfly on a diet except for the way they hold their wings horizontally on their backs. The garden variety antlion larva (aka doodlebug) is a ground dweller which creates a slippery sloped pit like this one in Ben's video. When an unfortunate insect slides down the slope the antlion pounces as seen in my video of an antlion attacking a beetle. That whole story is in this 2013 blog.
PWA larva - Entnemdept.ufl.edu |