Wooly Bear Caterpillar
Pyrrharctia isabella, the isabella tiger moth, banded woolly bear or just woollybear or woolly worm, occurs in the United States and southern Canada. It was first formally named by James Edward Smith in 1797.
The thirteen-segment larvae are usually covered with brown hair in their mid-regions and black hair in their anterior and posterior areas. In direct sunlight, the brown hair looks bright reddish brown.