Introducing North America's largest slug caterpillar, the Saddleback - Acharia stimulea. It is hard to leave "Slug Caterpillar Appreciation Week" behind when there are just so many fantastic and unusual species to tell you about. My first experience with the saddleback came from exploring my neighbors backyard in a Boston Massachusetts suburb as a child. This... thing... was resting on the underside of a buckthorn leaf, bright green and brown, bulbous, with an apparent face made from fleshy antl