The Potato Bug is a very large insect, often exceeding 2 inches in length. Because of it's size and appearance humans have come up with some interesting names for this bug: “Jerusalem Cricket”, "Old Bald-Headed Man" (Native American translation), "the Devil's spawn", and, my personal favorite, "Satan's fetus."
Although a potato bug's strong mandibles can inflict a painful bite on humans, they are not poisonous and are considered "mostly harmless." Potato bugs generally live underground and have been found burrowing around homes and gardens. While they do eat potatoes they typically prefer the underground roots of plants, shrubs, and trees.