Front half of forewings are orange, with the back half black. The scutellum is black as well, separating it from the similar-looking species Calopteron terminale. The antennae are comb-like. The forewings have a raised pattern that looks like a net, giving this family its common name.
I love the antennae and how they fan out. Intricacy like that isn't seen all the time. Found at Barbara A. Beiser Field Station.