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|Order||Unionoida (Freshwater Mussels)|
|Authority||(I. Lea, 1831)|
|TEW Status||Extinct (EX), Year assessed: 2010|
|IUCN Status||Extinct (EX), Year assessed: 2000|
|English Name||Arc-form Pearly Mussel, Sugarspoon|
|Dutch Name||Arkvorm Parelmossel|
|Synonyms||Dysnomia arcaeformis I. Lea, 1831|
|Range & Habitat||The Arc-form Pearly Mussel or Sugarspoon lived in the United States of America. It was found in the states Alabama, Kentucky, and Tennessee. This freshwater species occurred in the Cumberland and Tennessee River systems. The Arc-form Pearly Mussel was found in medium to large rivers in shoal and riffle areas. (Bogan, 2000)|
|Reproduction||It was a winter breeder. (Bogan, 2000)|
|History & Population||The habitat of this species has been severely modified or destroyed by damming. Damming along the entire river systems and also pollution had a negative impact on this species. Annual surveys are conducted throughout the whole system and the species has not been collected for over 50 years and probably went extinct in 1940. (Bogan, 2000)|
|Extinction Causes||Habitat modification and destruction by damming. Pollution also contributed. (Bogan, 2000)|
|Museum Specimens||Unknown. Do you know any museums that have this species in their collection? Contact this website!|
|Relatives||Other extinct Epioblasma: Angled Riffleshell (Epioblasma biemarginata), Arcuate Pearly Mussel (Epioblasma flexuosa), Yellow-blossom Pearly Mussel (Epioblasma florentina florentina), Acorn Pearly Mussel (Epioblasma haysiana), Stone's Pearly Mussel (Epioblasma lenior), Lewis Pearly Mussel (Epioblasma lewisii), Fine-rayed Pearly Mussel (Epioblasma personata), Nearby Pearly Mussel (Epioblasma propingua), Sampson's Pearly Mussel (Epioblasma sampsonii), Steward's Pearly Mussel (Epioblasma Stewardsonii), Green-blossom Pearly Mussel (Epioblasma torulosa gubernaculum), Tubercled-blossom Pearly Mussel (Epioblasma torulosa torulosa), Turgid-blossom Pearly Mussel (Epioblasma turgidula).|
|Bogan, A.E. 2000. Epioblasma arcaeformis. In: IUCN 2004. 2004 IUCN Red List of Threatened Species. <www.redlist.org>. Downloaded on 21 September 2005.|
updated: 17st January 2010.
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