Species Profile
Environmental Conservation Online System

Texas Pimpleback (Quadrula petrina)

Kingdom: Animalia
Class: Bivalvia
Order: Unionoida
Family: Unionidae

Listing Status:   

Map of Species occurrence

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Map Image Map of Species occurrence Map of Species occurrence

This map represents our best available information about where a species is currently known to or or is believed to occur; however, it should NOT be used as an official species list for Section 7 Consultation purposes. To obtain an official species list for this purpose, please visit the Information, Planning, and Conservation (IPaC) System (click here: http://ecos.fws.gov/ipac)



  • States/US Territories in which the Texas Pimpleback, is known to or is believed to occur:  Texas
  • US Counties in which the Texas Pimpleback, is known to or is believed to occur:  View All
Current Listing Status Summary
Status Date Listed Lead Region Where Listed
Southwest Region (Region 2)

» Candidate Information

Current Candidate Status

Listing Priority: 2
Magnitude: High
Immediacy: Imminent
Taxonomy: Species
Species Assessment: Species Assessment Form for the Quadrula petrina () -- 100Kb
Candidate Notice of Review Documents (Showing 1 of 1)
Date Citation Page Title
11/21/2012 77 FR 69993 70060 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions

» Federal Register Documents

Most Recent Federal Register Documents (Showing 3 of 3)
Date Citation Page Title
11/21/2012 77 FR 69993 70060 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
10/06/2011 76 FR 62166 62212 12-Month Finding on a Petition To List Texas Fatmucket, Golden Orb, Smooth Pimpleback, Texas Pimpleback, and Texas Fawnsfoot as Threatened or Endangered
12/15/2009 74 FR 66260 66271 90-Day Finding on Petitions To List Nine Species of Mussels From Texas as Threatened or Endangered With Critical Habitat

» Conservation Plans

No conservation plans have been created for Texas Pimpleback,

» Petitions

Most Recent Petition Findings (Showing 3 of 3)
Date Citation Page Title Finding
11/21/2012 77 FR 69993 70060 Review of Native Species That Are Candidates for Listing as Endangered or Threatened; Annual Notice of Findings on Resubmitted Petitions; Annual Description of Progress on Listing Actions
  • Notice 12 month petition finding, Warranted but precluded
  • Notice CNOR
    • 10/06/2011 76 FR 62166 62212 12-Month Finding on a Petition To List Texas Fatmucket, Golden Orb, Smooth Pimpleback, Texas Pimpleback, and Texas Fawnsfoot as Threatened or Endangered
  • Notice 12 month petition finding, Warranted but precluded
    • 12/15/2009 74 FR 66260 66271 90-Day Finding on Petitions To List Nine Species of Mussels From Texas as Threatened or Endangered With Critical Habitat
  • Notice 90-day Petition Finding, Substantial

    • » 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.

    Last updated: June 18, 2013