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Page last updated
Thu 04 Apr 2019

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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Nearctic Region

Neartic SubregionsThe Nearctic Region includes all of North America, north of the Mexican Plateau. It is the most most species-rich region in the world, with 310 species (62 genera). The families represented are Unionidae and Margaritiferidae.

Nearctica is composed of five subregions. The largest is the Interior Subregion (NA1; 51 gen, 149 spp.) which includes the Mississippi Basin and the adjacent, formerly glaciated areas of the Great Lakes and the Canadian Interior basins. The streams draining directly to the Atlantic comprise the Atlantic Subregion (NA2; 21 gen, 59 spp.), which extends from the glaciated portions of eastern Canada and the USA, south to Georgia. The Gulf Subregion (NA3; 44 gen, 154 spp.) is a real hot-spot of freshwater mussel diversity that occurs from the Rio Grande Basin in Mexico, east to the Suwanee in Florida. Sandwiched in between the Atlantic and Gulf subregions is the Florida Subregion (NA4; 9 gen, 16 spp.) which occupies peninsular Florida. West of the continental divide is the Pacific Subregion (NA5; 4 gen, 8 spp.). The Pacific Subregion shares closer affinities with the Palearctic Region than the rest of Nearctica.

Endemic species are marked with an asterisk (*).

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

Page updated: 10:57:36 Thu 04 Apr 2019

 
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