Epioblasma arcaeformis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Epioblasma arcaeformis
Species Authority: (I. Lea, 1831)
Common Name(s):
English Arc-form Pearly Mussel, Sugarspoon
Dysnomia arcaeformis I. Lea, 1831
Taxonomic Notes: Was listed in the 1996 IUCN Red List under the name Dysnomia arcaeformis?.

Assessment Information [top]

Red List Category & Criteria: Extinct ver 2.3
Year Published: 2000
Date Assessed: 2000-06-30
Needs updating
Assessor(s): Bogan, A.E. (Mollusc Specialist Group)
Reviewer(s): Seddon. M.B. & Bogan, A.E. (Mollusc Red List Authority)
The habitat of this species has been severely modified or destroyed by damming. Annual surveys are conducted throughout the whole system and the species has not been collected for over 50 years. Damming along entire river systems has had an impact on this species which is now listed as Extinct.
1996 Critically Endangered
1996 Extinct

Geographic Range [top]

Range Description: Occurred in the Cumberland and Tennessee River systems.
Regionally extinct:
United States (Alabama, Kentucky, Tennessee)
Range Map: Click here to open the map viewer and explore range.

Habitat and Ecology [top]

Habitat and Ecology: Medium to large rivers in shoal and riffle areas. Winter breeder.
Systems: Freshwater

Threats [top]

Major Threat(s): Damming along entire river systems has had an impact on this species, which probably went Extinct in 1940.

Citation: Bogan, A.E. (Mollusc Specialist Group) 2000. Epioblasma arcaeformis. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 02 September 2015.
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