Idaho springsnail (Pyrgulopsis idahoensis)

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

Listing Status:   

General Information

The Idaho springsnail (Pyrgulopsis idahoensis) is a small aquatic snail 0.2 to 0.25 inches long found in the middle Snake River, Idaho. Its shell is olive-tan in color with up to 6 whorls, and the body is pale with areas of grey/ black and reddish-brown. It occupies various substrates in lake and river habitats of the middle Snake River, where it feeds on diatoms. The Idaho springsnail was listed as endangered in 1992. Reasons for listing the snail were habitat modification, deteriorating water quality, restriction to free-flowing cool water habitats, significant range reduction, the appearance of the invasive New Zealand mudsnail, and the threat of several proposed hydroelectric dams. At the time of listing, the Idaho springsnail was known from only 35 river miles in the middle Snake River. We have learned through genetic studies that the species the Service listed in 1992 is now grouped with a new species, Pyrgulopsis robusta. that is comprised of four groups of freshwater springsnails living in Idaho, Oregon, Washington and Wyoming. This newly-combined species is distributed over a wider geographic area than in the original listing, and is no longer considered to be a separate species in need of protection under the Act. Because the Idaho springsnail is now considered to be a member of the species Pyrgulopsis robusta, it was delisted September 5, 2007.

  • States/US Territories in which the Idaho springsnail is known to or is believed to occur:  Idaho
  • US Counties in which the Idaho springsnail is known to or is believed to occur:  View All
 
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
12/14/1992 Pacific Region (Region 1)

» Federal Register Documents

Federal Register Documents
Date Citation Page Title
04/20/2005 70 FR 20512 20514 90-Day Finding on a Petition To Delist the Idaho Springsnail; 90-Day Finding on a Petition To List the Jackson Lake Springsnail, Harney Lake Springsnail, and Columbia Springsnail; and Initiation of a 5-Year Review for the Idaho Springsnail
12/18/1990 55 FR 51931 51936 ETWP; Proposed Endangered Status for Five Idaho Aquatic Snails; 55 FR 51931 51936
09/28/2006 71 FR 56938 56948 Endangered and Threatened Wildlife and Plants; 12-Month Finding on a Petition To Delist the Idaho Springsnail; 12-Month Finding on a Petition To List the Jackson Lake Springsnail, Harney Lake Springsnail, and Columbia Springsnail; and Proposed Rule To Remove the Idaho Springsnail From the List of Threatened and Endangered Wildlife
12/29/1988 53 FR 52745 52746 Notice of Finding on Petition to List an Ozark Cave Crayfish & an Idaho Snail; 53 FR 52745-52746
12/14/1992 57 FR 59244 59257 ETWP; Determination of Endangered or Threatened Status for Five Aquatic Snails in South Central Idaho; 57 FR 59244 59257
08/06/2007 72 FR 43560 43563 Final Rule To Remove the Idaho Springsnail (Pyrgulopsis(=Fontelicella) idahoensis) From the List of Endangered and Threatened Wildlife

» Recovery

Other Recovery Documents
Date Citation Page Title Document Type
08/06/2007 72 FR 43560 43563 Final Rule To Remove the Idaho Springsnail (Pyrgulopsis(=Fontelicella) idahoensis) From the List of Endangered and Threatened Wildlife
  • Final Delisting, Original Data in Error - Taxonomic revision
09/28/2006 71 FR 56938 56948 Endangered and Threatened Wildlife and Plants; 12-Month Finding on a Petition To Delist the Idaho Springsnail; 12-Month Finding on a Petition To List the Jackson Lake Springsnail, Harney Lake Springsnail, and Columbia Springsnail; and Proposed Rule To Remove the Idaho Springsnail From the List of Threatened and Endangered Wildlife
  • Notice 12 month petition finding, Warranted
  • Proposed Delisting, Original Data in Error - Taxonomic revision
04/20/2005 70 FR 20512 20514 90-Day Finding on a Petition To Delist the Idaho Springsnail; 90-Day Finding on a Petition To List the Jackson Lake Springsnail, Harney Lake Springsnail, and Columbia Springsnail; and Initiation of a 5-Year Review for the Idaho Springsnail
  • Notice 5-year Review
  • Notice 90-day Petition Finding, Substantial
Five Year Review
Date Title
05/25/2006 Idaho Springsnail 5-Year Review

» Critical Habitat

No critical habitat rules have been published for the Idaho springsnail.

» Conservation Plans

No conservation plans have been created for Idaho springsnail.

» 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.