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Epioblasma arcaeformis

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA MOLLUSCA BIVALVIA UNIONOIDA UNIONIDAE

Scientific Name: Epioblasma arcaeformis
Species Authority: (I. Lea, 1831)
Common Name/s:
English – Arc-form Pearly Mussel, Sugarspoon
Synonym/s:
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
Assessor/s: Bogan, A.E. (Mollusc Specialist Group)
Reviewer/s: Seddon. M.B. & Bogan, A.E. (Mollusc Red List Authority)
Justification:
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.
History:
1996 – Critically Endangered
1996 – Extinct
1994 – Extinct? (Groombridge 1994)
1990 – Extinct? (IUCN 1990)
1988 – Extinct? (IUCN Conservation Monitoring Centre 1988)
1986 – Extinct? (IUCN Conservation Monitoring Centre 1986)
1983 – Extinct

Geographic Range [top]

Range Description: Occurred in the Cumberland and Tennessee River systems.
Countries:
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. 2000. Epioblasma arcaeformis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 25 May 2012.
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