Ozark Big-Eared bat (Corynorhinus (=plecotus) townsendii ingens)

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

Listing Status:   

Where Listed: WHEREVER FOUND

General Information

Plecotus townsendii is a medium-sized bat with forearms measuring 39 to 48 millimeters (mm) long and weighing 7 to 12 grams. Total body length is 98 mm, the tail is 46 mm, and the hind foot is 11 mm long. This bat's long ears (over 2.5 centimeters) and facial glands on either side of the snout are quite distinctive. Fur is light to dark brown depending upon the age of the individual and the subspecies. The only other eastern bat that resembles the Ozark or the Virginia big-eared bat is P. rafinesquii (Rafinesque's big-eared bat). Rafinesque's big-eared bat has toe hairs that extend beyond the end of the toes and the dorsal fur is gray rather than brown. The belly fur of Rafinesque's big-eared bat is white or whitish rather than light brown or buff (Schmidly 1991, Barbour and Davis 1969). The Ozark and Virginia big-eared bats do not have overlapping ranges. Copulation occurs in the fall and winter and the females store the sperm until ovulation in late winter or spring. Gestation takes about 3 months and a single pup is born in May or June. Development is fairly rapid and the young are on their own within 2 months (Barbour and Davis 1969, Schmidly 1991, Kunz and Martin 1982).

  • States/US Territories in which the Ozark Big-Eared bat, Entire is known to or is believed to occur:  Arkansas , Missouri , Oklahoma
  • US Counties in which the Ozark Big-Eared bat, Entire is known to or is believed to occur:  View All
  • USFWS Refuges in which the Ozark Big-Eared bat, Entire is known to occur:  Ozark Plateau National Wildlife Refuge
 
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
11/30/1979 Southwest Region (Region 2) Entire

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
04/21/2006 71 FR 20714 20716 5-Year Review of 25 Southwestern Species
03/06/1979 44 FR 12382 12384 Requirement to Withdraw or Supplement Proposals to Determine Various U.S. Taxa of Plants and Wildlife as Endangered or Threatened or to Determine Critical Habitat for Such Species
12/02/1977 42 FR 61290 61292 Proposed Endangered Listing and Critical Habitat Determination for the Virginia and Ozark Big-eared Bats; 42 FR 61290 61292 (Plecotus townsendii virginianus, Plecotus townsendii ingens)
11/30/1979 44 FR 69206 69208 ETWP; Listing of Virginia and Ozark Big-eared Bats as Endangered Species and Critical Habitat Determination

» Recovery

Current Recovery Plan(s)
Date Title Plan Action Status Plan Status
03/28/1995 Ozark Big-Eared Bat Revised Recovery Plan View Implementation Progress Final Revision 1
Other Recovery Documents
Date Citation Page Title Document Type
04/21/2006 71 FR 20714 20716 5-Year Review of 25 Southwestern Species
  • Notice 5-year Review, Initiation
Five Year Review
Date Title
05/22/2008 Ozark Big-eared Bat 5-Year Review

» Critical Habitat

Date Citation Page Title Document Type Status
12/02/1977 42 FR 61290 61292 Proposed Endangered Listing and Critical Habitat Determination for the Virginia and Ozark Big-eared Bats; 42 FR 61290 61292 (Plecotus townsendii virginianus, Plecotus townsendii ingens) Proposed Rule Unknown

To learn more about critical habitat please see http://ecos.fws.gov/crithab

» Conservation Plans

No conservation plans have been created for Ozark Big-Eared bat.

» 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.