Villosa trabalis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Villosa trabalis
Species Authority: (Conrad, 1834)
Common Name(s):
English Cumberland Bean, Cumberland Bean Pearly Mussel, Purple Bean

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1+2c ver 2.3
Year Published: 2000
Date Assessed: 2000-06-30
Needs updating
Assessor(s): Bogan, A.E. & Seddon, M.B. (Mollusc Specialist Group)
Reviewer(s): Seddon, M.B. (Mollusc Red List Authority)
There are a few records of isolated populations of very low numbers for this species. A viable population is still present in Hiwawa County and it is viewed as single locality with less than 100 km² of river habitat that is in decline.
1996 Not Evaluated
1994 Endangered (Groombridge 1994)
1990 Endangered (IUCN 1990)
1988 Endangered (IUCN Conservation Monitoring Centre 1988)
1986 Endangered (IUCN Conservation Monitoring Centre 1986)

Geographic Range [top]

United States (Alabama, Kentucky, Tennessee)
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This species occupies fast flowing, small streams and rivers with a gravel substrate with some sand on riffle areas.
Systems: Freshwater

Threats [top]

Major Threat(s): It is threatened by habitat loss due to acid mine drainage and dams.

Citation: Bogan, A.E. & Seddon, M.B. (Mollusc Specialist Group) 2000. Villosa trabalis. The IUCN Red List of Threatened Species. Version 2014.3. <>. Downloaded on 30 May 2015.
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