Subspecies
At present seven subspecies of Aplodontia rufa are recognized.
Aplodontia rufa californica
- Distributed throughout the Sierra Nevada range in Northern California and extreme western Nevada.
Aplodontia rufa humboldtiana
- Restricted to the far Northwestern coast of California.
Aplodontia rufa nigra
- Restricted to a small region in southern Mendocino County, California.
Aplodontia rufa pacifica
- Distributed across coastal Oregon.
Aplodontia rufa phaea
- Found in a small pocket just Northwest of San Francisco, California.
Aplodontia rufa rainieri
- Found across the Cascade Range from southern British Columbia to northern California.
Aplodontia rufa rufa
- Found along coastal Washington, particularly on the Olympic Peninsula.
Read more about this topic: Mountain Beaver