Alabama Mollusks

Endangered and Candidate Species

Comments and/or additions to these lists may be sent to dwills@hiwaay.net.

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Federal List

This list of Alabama mollusks protected under the Federal Endangered Species Program comes from several sources and should not be considered an authoritative list. For the official listing of endangered/threatened species, visit the US Fish and Wildlife site.

Endangered/Threatened Species

As of October 31, 1998:

Acornshell, southern (Epioblasma othcaloogensis);
Endangered; Listed: March 17, 1993 (58 FR 14339)
Bankclimber (mussel), purple (Elliptoideus sloatianus);
Threatened; Listed: March 16, 1998 (63 FR 12686)
Blossom, turgid (pearlymussel) (Epioblasma (=Dysnomia) turgidula);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Blossom, yellow (pearlymussel) (Epioblasma (=Dysnomia) florentina florentina);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Catspaw (=purple cat's paw pearlymussel ) (Epioblasma (=Dysnomia) obliquata obliquata);
Endangered; Listed: July 10, 1990 (55 FR 28213)
Clubshell, black (=Curtus' mussel) (Pleurobema curtum);
Endangered; Listed: April 7, 1987 (52 FR 11169)
Clubshell, ovate (Pleurobema perovatum);
Endangered; Listed: March 17, 1993 (58 FR 14339)
Clubshell, southern (Pleurobema decisum);
Endangered; Listed: March 17, 1993 (58 FR 14339)
Combshell, Cumberlandian (Epioblasma brevidens);
Endangered; Listed: January 10, 1996 (22 FR 1657)
Combshell, southern (=penitent mussel) (Epioblasma (=Dysnomia) penita);
Endangered; Listed: April 7, 1987 (52 FR 11169)
Combshell, upland (Epioblasma metastriata);
Endangered; Listed: March 17, 1993 (58 FR 14339)
Elimia (snail), lacy (Elimia crenatella);
Threatened
Fanshell (Cyprogenia stegaria (=irrorata));
Endangered; Listed: June 21, 1990 (55 FR 25595)
Heelsplitter, Alabama (=inflated) (Potamilus inflatus);
Threatened; Listed: September 28, 1990 (55 FR 39872)
Kidneyshell, triangular (Ptychobranchus greeni);
Endangered; Listed: March 17, 1993 (58 FR 14339)
Lampmussel, Alabama (=Pearly mussel, Alabama lamp) (Lampsilis virescens);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Lilliput, pale (pearlymussel) (Toxolasma (=Carunculina) cylindrellus);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Lioplax (snail), cylindrical (Lioplax cyclostomaformis );
Endangered
Moccasinshell, Alabama (Medionidus acutissimus);
Threatened; Listed: March 17, 1993 (58 FR 14339)
Moccasinshell, Coosa (Medionidus parvulus);
Endangered; Listed: March 17, 1993 (58 FR 14339)
Moccasinshell, Gulf (Medionidus penicillatus);
Endangered; Listed: March 16, 1998 (63 FR 12686)
Monkeyface, Cumberland (pearlymussel) (Quadrula intermedia);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Mucket, orange-nacre (Lampsilis perovalis);
Threatened; Listed: March 17, 1993 (58 FR 14339)
Mucket, pink (pearlymussel) (Lampsilis abrupta (=orbiculata));
Endangered; Listed: June 24, 1976 (41 FR 26019)
Mussel, Oyster (Epioblasma capsaeformis);
Endangered; Listed: January 10, 1996 (22 FR 1657)
Pearlymussel, cracking (Hemistena (=Lastena) lata);
Endangered; Listed: September 28, 1989 (54 FR 39853)
Pearlymussel, dromedary (Dromus dromas);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Pearlymussel, little-wing (Pegias fabula);
Endangered; Listed: November 14, 1988 (53 FR 45865)
Pebblesnail, flat (Lepyrium showalteri );
Endangered
Pigtoe, oval (Pleurobema pyriforme);
Endangered; Listed: March 16, 1998 (63 FR 12686)
Pigtoe, dark (Pleurobema furvum);
Endangered; Listed: March 17, 1993 (58 FR 14339)
Pigtoe, fine-rayed (Fusconaia cuneolus);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Pigtoe, flat (=Marshall's mussel) (Pleurobema marshalli);
Endangered; Listed: April 7, 1987 (52 FR 11169)
Pigtoe, heavy (=Judge Tait's mussel) (Pleurobema taitianum);
Endangered; Listed: April 7, 1987 (52 FR 11169)
Pigtoe, rough (Pleurobema plenum);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Pigtoe, shiny (Fusconaia cor (=edgariana));
Endangered; Listed: June 24, 1976 (41 FR 26019)
Pigtoe, southern (Pleurobema georgianum);
Endangered; Listed: March 17, 1993 (58 FR 14339)
Pimpleback, orange-foot (pearlymussel) (Plethobasus cooperianus);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Pink, ring (mussel) (=golf stick pearly) (Obovaria retusa);
Endangered; Listed: September 29, 1989 (54 FR 40112)
Pocketbook, fine-lined (Lampsilis altilis);
Threatened; Listed: March 17, 1993 (58 FR 14339)
Pocketbook, shinyrayed (Lampsilis subangulata );
Endangered; Listed: March 16, 1998 (63 FR 12686)
Riversnail, Anthony's (Athearnia anthonyi);
Endangered; Listed: April 15, 1994 (59 FR 17998)
Rocksnail, painted (Leptoxis taeniata);
Threatened
Rocksnail, plicate (Leptoxis plicata);
Endangered
Rocksnail, round (Leptoxis ampla);
Threatened
Slabshell, Chipola (Elliptio chipolaensis);
Threatened; Listed: March 16, 1998 (63 FR 12686)
Snail, tulotoma (=Alabama live-bearing) (Tulotoma magnifica);
Endangered; Listed: January 9, 1991 (56 FR 800)
Stirrupshell (Quadrula stapes);
Endangered; Listed: April 7, 1987 (52 FR 11169)
Wartyback, white (pearlymussel) (Plethobasus cicatricosus);
Endangered; Listed: June 24, 1976 (41 FR 26019)


NOTE: The following species were previously listed for Alabama. They still have an Endangered/Threatened status, but are no longer listed for Alabama. (Some may be considered extinct.)
Pearlymussel, tubercled-blossom (Epioblasma (=Dysnomia) torulosa torulosa);
Endangered; Listed: June 24, 1976 (41 FR 26019)
Clubshell (Pleurobema clava);
Endangered; Listed: January 22, 1993 (58 FR 5642)

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Candidate Species

When a species is thought to be nearing endangered levels, it may be placed on a list of "candidates" for formal listing on the Federal Endangered Species List. The rules for listing candidate species have been greatly revised and, as a result, only those species which have sufficient information to support a proposed listing (formerly known as Category 1 species) are considered candidate species. A list of species for which the Service had some information indicating that it may be in trouble but not enough to determine whether listing was appropriate (formerly known as Category 2 species) will no longer be maintained.

The 1994 list of candidate mollusk species for Alabama (before these rule changes) is available in table or text-only format. An attempt has been made to remove species from this list that have since been formally recognized as endangered or threatened.

Candidate Alabama mollusk species as of September 19, 1997:

Campeloma, slender (snail) (Campeloma decampi);
("Currier" Binney, 1865); Viviparidae
Marstonia, armored (=thick-shelled) (Pyrgulopsis pachyta (=Marstonia p.));
(F. G. Thompson, 1977); Hydrobiidae

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Page Curator: Deborah Wills (dwills@HiWAAY.net)
This page has been accessed times since 9 February 1997.
Last Revised: 23 December 1998