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Page last updated
Wed 03 Aug 2022

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

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North America

North American SubregionsThe region includes all of North America, north of the Mexican Plateau. It is the most most species-rich region in the world, with 306 species (62 genera). The families represented are Unionidae and Margaritiferidae.

North America is composed of five subregions. The Canadian Interior Subregion drains to southern and eastern Hudson Bay and the Arctic (NA1; 10 gen, 13 spp.) The Mississippi-Great Lakes Subregion (NA2; 50 gen, 151 spp.) which includes the Mississippi Basin and the adjacent, formerly glaciated areas of the Great Lakes. The streams draining directly to the Atlantic comprise the Atlantic Slope Subregion (NA3; 22 gen, 63 spp.), which extends from the glaciated portions of eastern Canada and the USA, south to Georgia. The Gulf-Florida Subregion (NA4; 42 gen, 156 spp.) is a real hot-spot of freshwater mussel diversity that occurs from the Rio Grande Basin in Mexico, east to peninsular Florida. West of the continental divide is the Pacific Subregion (NA5; 4 gen, 7 spp.). The Pacific Subregion shares closer affinities with East Asia than the rest of Nearctica.

Endemic species are marked with an asterisk (*).

Canadian Interior Subregion (NA1)
  1. Amblema plicata
  2. Anodontoides ferussacianus
  3. Fusconaia flava
  4. Lampsilis cardium
  5. Lampsilis siliquoidea
  6. Lasmigona complanata
  7. Lasmigona compressa
  1. Lasmigona costata
  2. Ligumia recta
  3. Potamilus alatus
  4. Pyganodon grandis
  5. Quadrula quadrula
  6. Strophitus undulatus
Mississippi-Great Lakes Subregion (NA2)
  1. Alasmidonta atropurpurea*
  2. Alasmidonta marginata
  3. Alasmidonta raveneliana*
  4. Alasmidonta viridis*
  5. Amblema plicata
  6. Anodontoides denigratus*
  7. Anodontoides ferussacianus
  8. Arcidens confragosus
  9. Arcidens wheeleri*
  10. Cambarunio dactylus*
  11. Cambarunio hesperus*
  12. Cambarunio iris
  13. Cambarunio jonesii
  14. Cambarunio nebulosus
  15. Cambarunio simus*
  16. Cambarunio taeniatus*
  17. Cumberlandia monodonta*
  18. Cyclonaias nodulata
  19. Cyclonaias pustulosa
  20. Cyclonaias tuberculata*
  21. Cyprogenia aberti*
  22. Cyprogenia stegaria*
  23. Dromus dromas*
  24. Ellipsaria lineolata
  25. Elliptio complanata
  26. Elliptio crassidens
  27. Epioblasma ahlstedti*
  28. Epioblasma arcaeformis*
  29. Epioblasma aureola*
  30. Epioblasma biemarginata*
  31. Epioblasma brevidens*
  32. Epioblasma capsaeformis*
  33. Epioblasma cincinnatiensis*
  34. Epioblasma curtisii*
  35. Epioblasma flexuosa*
  36. Epioblasma florentina*
  37. Epioblasma gubernaculum*
  38. Epioblasma haysiana*
  39. Epioblasma lenior*
  40. Epioblasma lewisii*
  41. Epioblasma obliquata*
  42. Epioblasma perobliqua*
  43. Epioblasma personata*
  44. Epioblasma propinqua*
  45. Epioblasma rangiana*
  46. Epioblasma sampsonii*
  47. Epioblasma stewardsonii*
  48. Epioblasma torulosa*
  49. Epioblasma triquetra*
  50. Epioblasma turgidula*
  51. Epioblasma walkeri*
  52. Eurynia dilatata*
  53. Fusconaia cor*
  54. Fusconaia cuneolus*
  55. Fusconaia flava
  56. Fusconaia ozarkensis*
  57. Fusconaia subrotunda*
  58. Glebula rotundata
  59. Hemistena lata*
  60. Lampsilis abrupta*
  61. Lampsilis brittsi*
  62. Lampsilis cardium
  63. Lampsilis fasciola*
  64. Lampsilis higginsii*
  65. Lampsilis hydiana
  66. Lampsilis ovata*
  67. Lampsilis powellii*
  68. Lampsilis rafinesqueana*
  69. Lampsilis reeveiana*
  70. Lampsilis satura
  71. Lampsilis sietmani
  72. Lampsilis siliquoidea
  73. Lampsilis streckeri*
  74. Lampsilis teres
  75. Lampsilis virescens*
  76. Lasmigona complanata
  1. Lasmigona compressa
  2. Lasmigona costata
  3. Lasmigona holstonia*
  4. Lasmigona subviridis
  5. Leaunio lienosus
  6. Leaunio ortmanni*
  7. Leaunio pataecus*
  8. Leaunio umbrans
  9. Leaunio vanuxemensis*
  10. Lemiox rimosus*
  11. Ligumia recta
  12. Margaritifera falcata
  13. Medionidus conradicus*
  14. Megalonaias nervosa
  15. Obliquaria reflexa
  16. Obovaria arkansasensis
  17. Obovaria olivaria*
  18. Obovaria retusa*
  19. Obovaria subrotunda*
  20. Ortmanniana ligamentina*
  21. Ortmanniana pectorosa*
  22. Paetulunio fabalis*
  23. Pegias fabula*
  24. Plectomerus dombeyanus
  25. Plethobasus cicatricosus*
  26. Plethobasus cooperianus*
  27. Plethobasus cyphyus*
  28. Pleurobema clava*
  29. Pleurobema cordatum*
  30. Pleurobema oviforme*
  31. Pleurobema plenum*
  32. Pleurobema rubrum*
  33. Pleurobema sintoxia*
  34. Pleuronaia barnesiana*
  35. Pleuronaia dolabelloides*
  36. Pleuronaia gibber*
  37. Potamilus alatus
  38. Potamilus capax*
  39. Potamilus fragilis
  40. Potamilus leptodon*
  41. Potamilus ohiensis
  42. Potamilus purpuratus
  43. Ptychobranchus fasciolaris*
  44. Ptychobranchus occidentalis*
  45. Ptychobranchus subtentus*
  46. Pyganodon grandis
  47. Pyganodon lacustris
  48. Quadrula fragosa*
  49. Quadrula quadrula
  50. Reginaia ebenus
  51. Sagittunio nasutus
  52. Sagittunio subrostratus
  53. Simpsonaias ambigua*
  54. Strophitus undulatus
  55. Theliderma cylindrica*
  56. Theliderma intermedia*
  57. Theliderma metanevra
  58. Theliderma sparsa*
  59. Toxolasma cylindrellum*
  60. Toxolasma lividum*
  61. Toxolasma parvum
  62. Toxolasma texasiense
  63. Tritogonia nobilis
  64. Tritogonia verrucosa
  65. Truncilla donaciformis
  66. Truncilla truncata
  67. Uniomerus declivis
  68. Uniomerus tetralasmus
  69. Utterbackia imbecillis
  70. Utterbackiana suborbiculata
  71. Venustaconcha ellipsiformis*
  72. Venustaconcha pleasii*
  73. Venustaconcha trabalis*
  74. Venustaconcha troostensis*
  75. Villosa vibex
Atlantic Slope Subregion (NA3)
  1. Alasmidonta arcula*
  2. Alasmidonta heterodon*
  3. Alasmidonta marginata
  4. Alasmidonta robusta*
  5. Alasmidonta undulata*
  6. Alasmidonta varicosa*
  7. Anodontoides ferussacianus
  8. Atlanticoncha ochracea*
  9. Cambarunio iris
  10. Elliptio angustata*
  11. Elliptio arctata
  12. Elliptio cistellaeformis*
  13. Elliptio complanata
  14. Elliptio congaraea*
  15. Elliptio dariensis
  16. Elliptio downiei*
  17. Elliptio fisheriana*
  18. Elliptio folliculata*
  19. Elliptio fraterna
  20. Elliptio hopetonensis*
  21. Elliptio icterina*
  22. Elliptio lanceolata
  23. Elliptio marsupiobesa*
  24. Elliptio producta*
  25. Elliptio roanokensis*
  26. Elliptio shepardiana*
  27. Elliptio spinosa*
  28. Fusconaia flava
  29. Fusconaia masoni*
  30. Lampsilis cardium
  31. Lampsilis cariosa*
  32. Lampsilis dolabraeformis*
  1. Lampsilis radiata*
  2. Lampsilis siliquoidea
  3. Lampsilis splendida*
  4. Lasmigona compressa
  5. Lasmigona costata
  6. Lasmigona decorata*
  7. Lasmigona subviridis
  8. Ligumia recta
  9. Margaritifera margaritifera
  10. Parvaspina collina*
  11. Parvaspina steinstansana*
  12. Potamilus alatus
  13. Potamilus fragilis
  14. Pyganodon cataracta
  15. Pyganodon fragilis*
  16. Pyganodon gibbosa*
  17. Pyganodon grandis
  18. Pyganodon lacustris
  19. Sagittunio aldermani*
  20. Sagittunio nasutus
  21. Sagittunio vaughanianus*
  22. Sinanodonta woodiana
  23. Strophitus undulatus
  24. Toxolasma pullus*
  25. Uniomerus carolinianus
  26. Utterbackia imbecillis
  27. Utterbackiana couperiana
  28. Utterbackiana implicata*
  29. Venustaconcha constricta*
  30. Villosa delumbis*
  31. Villosa vibex
Gulf of Mexico-Florida Subregion (NA4)
  1. Alasmidonta mccordi*
  2. Alasmidonta triangulata*
  3. Alasmidonta wrightiana*
  4. Amblema elliottii*
  5. Amblema neislerii*
  6. Amblema plicata
  7. Arcidens confragosus
  8. Cambarunio jonesii
  9. Cambarunio nebulosus
  10. Cyclonaias archeri*
  11. Cyclonaias infucata*
  12. Cyclonaias kieneriana*
  13. Cyclonaias kleiniana*
  14. Cyclonaias necki*
  15. Cyclonaias nodulata
  16. Cyclonaias petrina*
  17. Cyclonaias pustulosa
  18. Cyclonaias succissa*
  19. Cyrtonaias tampicoensis
  20. Disconaias conchos*
  21. Ellipsaria lineolata
  22. Elliptio ahenea*
  23. Elliptio arca*
  24. Elliptio arctata
  25. Elliptio chipolaensis*
  26. Elliptio crassidens
  27. Elliptio dariensis
  28. Elliptio fraterna
  29. Elliptio fumata*
  30. Elliptio jayensis*
  31. Elliptio lanceolata
  32. Elliptio mcmichaeli*
  33. Elliptio monroensis*
  34. Elliptio nigella*
  35. Elliptio occulta*
  36. Elliptio pullata*
  37. Elliptio purpurella*
  38. Elliptoideus sloatianus*
  39. Epioblasma metastriata*
  40. Epioblasma othcaloogensis*
  41. Epioblasma penita*
  42. Fusconaia askewi*
  43. Fusconaia burkei*
  44. Fusconaia cerina*
  45. Fusconaia chunii*
  46. Fusconaia escambia*
  47. Fusconaia flava
  48. Fusconaia iheringi*
  49. Fusconaia lananensis*
  50. Fusconaia mitchelli*
  51. Glebula rotundata
  52. Hamiota altilis*
  53. Hamiota australis*
  54. Hamiota perovalis*
  55. Hamiota subangulata*
  56. Lampsilis bergmanni*
  57. Lampsilis binominata*
  58. Lampsilis bracteata*
  59. Lampsilis floridensis*
  60. Lampsilis hydiana
  61. Lampsilis ornata*
  62. Lampsilis satura
  63. Lampsilis sietmani
  64. Lampsilis siliquoidea
  65. Lampsilis straminea*
  66. Lampsilis teres
  67. Lasmigona alabamensis*
  68. Lasmigona complanata
  69. Lasmigona etowaensis*
  70. Lasmigona subviridis
  71. Leaunio lienosus
  72. Leaunio umbrans
  73. Ligumia recta
  74. Margaritifera hembeli*
  75. Margaritifera marrianae*
  76. Medionidus acutissimus*
  77. Medionidus parvulus*
  78. Medionidus penicillatus*
  1. Medionidus simpsonianus*
  2. Medionidus walkeri*
  3. Megalonaias nervosa
  4. Obliquaria reflexa
  5. Obovaria arkansasensis
  6. Obovaria choctawensis*
  7. Obovaria haddletoni*
  8. Obovaria unicolor*
  9. Plectomerus dombeyanus
  10. Pleurobema athearni*
  11. Pleurobema beadleianum*
  12. Pleurobema curtum*
  13. Pleurobema decisum*
  14. Pleurobema fibuloides*
  15. Pleurobema georgianum*
  16. Pleurobema hanleyianum*
  17. Pleurobema hartmanianum*
  18. Pleurobema marshalli*
  19. Pleurobema perovatum*
  20. Pleurobema pyriforme*
  21. Pleurobema riddellii*
  22. Pleurobema rubellum*
  23. Pleurobema stabile*
  24. Pleurobema strodeanum*
  25. Pleurobema taitianum*
  26. Pleurobema verum*
  27. Popenaias popeii*
  28. Potamilus amphichaenus*
  29. Potamilus fragilis
  30. Potamilus inflatus*
  31. Potamilus metnecktayi*
  32. Potamilus ohiensis
  33. Potamilus purpuratus
  34. Potamilus streckersoni*
  35. Pseudodontoideus connasaugaensis*
  36. Pseudodontoideus subvexus*
  37. Ptychobranchus foremanianus*
  38. Ptychobranchus greenii*
  39. Ptychobranchus jonesi*
  40. Pyganodon cataracta
  41. Pyganodon grandis
  42. Quadrula couchiana*
  43. Quadrula quadrula
  44. Reginaia apalachicola*
  45. Reginaia ebenus
  46. Reginaia rotulata*
  47. Sagittunio subrostratus
  48. Strophitus pascagoulaensis*
  49. Strophitus radiatus*
  50. Strophitus undulatus
  51. Strophitus williamsi*
  52. Theliderma johnsoni*
  53. Theliderma metanevra
  54. Theliderma stapes*
  55. Toxolasma corvunculus*
  56. Toxolasma parvum
  57. Toxolasma paulum*
  58. Toxolasma texasiense
  59. Tritogonia nobilis
  60. Tritogonia verrucosa
  61. Truncilla cognata*
  62. Truncilla donaciformis
  63. Truncilla macrodon*
  64. Truncilla truncata
  65. Uniomerus carolinianus
  66. Uniomerus columbensis*
  67. Uniomerus declivis
  68. Uniomerus tetralasmus
  69. Utterbackia imbecillis
  70. Utterbackia peggyae*
  71. Utterbackia peninsularis*
  72. Utterbackiana couperiana
  73. Utterbackiana hartfieldorum*
  74. Utterbackiana heardi*
  75. Utterbackiana suborbiculata
  76. Villosa amygdalum*
  77. Villosa vibex
  78. Villosa villosa*
Pacific Subregion (NA5)
  1. Anodonta californiensis*
  2. Anodonta kennerlyi*
  3. Anodonta nuttalliana*
  4. Anodonta oregonensis*
  1. Beringiana beringiana
  2. Gonidea angulata*
  3. Margaritifera falcata

Page updated: 09:38:40 Wed 03 Aug 2022

 
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