Sometimes the moth is as invisible as the caterpillar and their beauty lies in the wisdom to blend in with that which is around them.
Another lesson in camouflage.
My field guide to caterpillars of Eastern North America says 'surely a predator would require a special search image to successfully locate a unicorn caterpillar in a forest with its sea of leaves. Perhaps this is their defense, being at the same time cryptic and unusual - like the caterpillars are recognized far less than they are seen.'