Firefly-mimicking moth (Arctiidae: Lithosiinae: Rhabdatomis sp.) from Costa Rica. Why mimic a firefly? Because some of them (Lampyridae, actually beetles) contain a potent class of toxins called lucibufagins and so are avoided by many predators - thus, the moth reaps the benefits of decreased predation without actually being toxic.
This lovely Tortricid moth (Acleris nivisellana) from Iowa appears to be wearing an elaborate shawl, but in fact is doing its best impression of bird droppings.
Mating Tubeworm Moths - Acrolophidae: possibly Acrolophus sp., from Monteverde, Costa Rica.