Point Arena mountain beaver (Aplodontia rufa nigra)

Federal Register | Recovery | Critical Habitat | Conservation Plans | Petitions | Life History

Listing Status:   

Where Listed: WHEREVER FOUND

General Information

Mountain beavers are the only extant member of the family Aplodontidae, and are considered the most primitive living rodents. Mountain beavers are stout, compact and cylindrical and have a broad, massive, laterally compressed skull. They average about one foot in length and two to four pounds in weight. Mountain beavers have small eyes, rounded ears, and a distinctive cylindrical stump of a tail. Each forepaw has an opposable thumb and all digits have long curved claws for digging. Mountain beavers are not closely related to true beavers (Castor spp.), which are semi-aquatic. The Point Arena mountain beaver is one of seven subspecies of mountain beaver. Certain cranial and other characteristics separate the Point Arena mountain beaver from other subspecies of mountain beavers. The most obvious of these characteristics is the unique blackish coloration.

  • States/US Territories in which the Point Arena mountain beaver, Entire is known to or is believed to occur:  California
  • US Counties in which the Point Arena mountain beaver, Entire is known to or is believed to occur:  View All
  • Additional species information
 
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
12/12/1991 California/Nevada Region (Region 8) Entire

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
04/01/2013 78 FR 19510 19514 Initiation of 5-Year Reviews of 56 Species in California and Nevada; request for information
03/05/2008 73 FR 11945 11950 Initiation of 5-Year Reviews of 58 Species in California and Nevada; Availability of Completed 5-Year Reviews in California, Nevada and Southern Oregon
12/12/1991 56 FR 64716 64723 ETWP; Aplodontia rufa nigra (Point Arena Mountain Beaver) Determined to be Endangered; 56 FR 64716 64723
02/15/1991 56 FR 6353 6359 ETWP; Aplodontia rufa nigra (Point Arena Mountain Beaver) Proposed as Endangered; 56 FR 6353 6359
05/21/2010 75 FR 28636 28642 Initiation of 5-Year Reviews of 34 Species in California and Nevada; Availability of 96 Completed 5-Year Reviews in California and Nevada

» Recovery

Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
06/02/1998 Point Arena Mountain Beaver Aplodontia rufa nigra (Rafinesque) Recovery Plan View Implementation Progress Final
Other Recovery Documents
Date Citation Page Title Document Type
03/05/2008 73 FR 11945 11950 Initiation of 5-Year Reviews of 58 Species in California and Nevada; Availability of Completed 5-Year Reviews in California, Nevada and Southern Oregon
  • Notice 5-year Review, Initiation
04/01/2013 78 FR 19510 19514 Initiation of 5-Year Reviews of 56 Species in California and Nevada; request for information
  • Notice 5-year Review, Initiation
05/21/2010 75 FR 28636 28642 Initiation of 5-Year Reviews of 34 Species in California and Nevada; Availability of 96 Completed 5-Year Reviews in California and Nevada
  • Notice 5-year Review, Completion
Five Year Review
Date Title
04/01/2009 Point Arena Mountain Beaver 5-Year Review

» Critical Habitat

No critical habitat rules have been published for the Point Arena mountain beaver.

» Conservation Plans

Habitat Conservation Plans (HCP) (learn more)
HCP Plan Summaries
AT&T - Point Arena Mountain Beaver Low Effect
Fisher Family
Mendocino Redwood Company

» Petitions

» Life History

No Life History information has been entered into this system for this species.

» Other Resources

NatureServe Explorer Species Reports -- NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library -- The U.S. Fish and Wildlife Service's National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.