Skiff Moth Caterpillar in Motion

This is the underside of a Skiff Moth Caterpillar in Motion. Skiff moths can be found on birch, blueberry, cherry, chestnut, gale, hawthorn, hop hornbeam, maple, rose, oak, poplar, willow, and other woody plants in North America. This particular caterpillar has been parasitized, which means that something attacked the specimen and laid it's eggs inside. The egg has hatched and the parasitoid is now consuming the subject. Credit to 'Macropod'.