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Tetrastemma Ehrenberg, 1831

Tetrastemma sp. from the Red Sea
Tetrastemma sp. from the Red Sea

122419 (urn:lsid:marinespecies.org:taxname:122419)

accepted
Genus
Psammamphiporus Gibson, 1989 · unaccepted > junior subjective synonym

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  1. Species Tetrastemma ambiguum Riches, 1893
  2. Species Tetrastemma angulatus Senz, 1993
  3. Species Tetrastemma aseptata (Friedrich, 1935)
  4. Species Tetrastemma assimile Örsted, 1844
  5. Species Tetrastemma bacescui Müller, 1962
  6. Species Tetrastemma baculus (Quatrefages, 1846)
  7. Species Tetrastemma beaumonti (Southern, 1913)
  8. Species Tetrastemma bioculatum Örsted, 1843
  9. Species Tetrastemma bistriatum (Timofeeva, 1912)
  10. Species Tetrastemma brunneum (Friedrich, 1935)
  11. Species Tetrastemma buxeum Bürger, 1895
  12. Species Tetrastemma candidum (Müller, 1774)
  13. Species Tetrastemma cerasinum Bürger, 1895
  14. Species Tetrastemma coronatum (Quatrefages, 1846)
  15. Species Tetrastemma cruciatum Bürger, 1895
  16. Species Tetrastemma diadema Hubrecht, 1879
  17. Species Tetrastemma dubium Örsted, 1845
  18. Species Tetrastemma elegans (Girard, 1852)
  19. Species Tetrastemma elongatum (Stephenson, 1911)
  20. Species Tetrastemma falsum Bürger, 1895
  21. Species Tetrastemma flavidum Ehrenberg, 1828
  22. Species Tetrastemma fozense Gibson & Junoy, 1991
  23. Species Tetrastemma fulvum Kirsteuer, 1963
  24. Species Tetrastemma glanduliferum Bürger, 1895
  25. Species Tetrastemma hermaphroditicum (Keferstein, 1868)
  26. Species Tetrastemma herouardi (Oxner, 1908)
  27. Species Tetrastemma humile (Quatrefages, 1846)
  28. Species Tetrastemma interruptum Bürger, 1895
  29. Species Tetrastemma kefersteinii (Marion, 1869)
  30. Species Tetrastemma kirsteueri Senz, 1995
  31. Species Tetrastemma knochii (Kölliker, 1845)
  32. Species Tetrastemma laminariae Ushakov, 1928
  33. Species Tetrastemma leonillae (Oxner, 1908)
  34. Species Tetrastemma longissimum Bürger, 1895
  35. Species Tetrastemma lophoheliae Bergendal, 1903
  36. Species Tetrastemma maculatum (Timofeeva, 1912)
  37. Species Tetrastemma marionis Joubin, 1890
  38. Species Tetrastemma melanocephalum (Johnston, 1837)
  39. Species Tetrastemma mixtum (Timofeeva, 1912)
  40. Species Tetrastemma nimbatum Bürger, 1895
  41. Species Tetrastemma portus Bürger, 1895
  42. Species Tetrastemma quadristriatum Langerhans, 1880
  43. Species Tetrastemma quatrefagesi (Bürger, 1904)
  44. Species Tetrastemma robertianae McIntosh, 1874
  45. Species Tetrastemma scutelliferum Bürger, 1895
  46. Species Tetrastemma simplex (Timofeev, 1911)
  47. Species Tetrastemma subpellucidum Örsted, 1843
  48. Species Tetrastemma tutus (Monastero, 1930)
  49. Species Tetrastemma unicolor (Hubrecht, 1879)
  50. Species Tetrastemma vastum Bürger, 1895
  51. Species Tetrastemma vermiculus (Quatrefages, 1846)
  52. Species Tetrastemma viera (Timofeev, 1911)
  53. Species Tetrastemma viperula (Timofeev, 1911)
  54. Species Tetrastemma virgatum Kirsteuer, 1963
  55. Species Tetrastemma vittigerum (Bürger, 1904)
  56. Species Tetrastemma albolineatum (Timofeeva, 1912) (uncertain > nomen dubium)
  57. Species Tetrastemma bipeltatum (Timofeeva, 1912) (uncertain > nomen dubium)
  58. Species Tetrastemma cassidens (Marenzeller, 1886) (uncertain > nomen dubium)
  59. Species Tetrastemma cephalophorum Bürger, 1895 (uncertain > nomen dubium)
  60. Species Tetrastemma graeffei (Diesing, 1863) (uncertain > nomen dubium)
  61. Species Tetrastemma helvolum Bürger, 1895 (uncertain > nomen dubium)
  62. Species Tetrastemma peltatum Bürger, 1895 (uncertain > nomen dubium)
  63. Species Tetrastemma arctica Ushakov, 1926 accepted as Arctostemma arcticum (Ushakov, 1926) (unaccepted > superseded combination)
  64. Species Tetrastemma brunnea (Friedrich, 1935) accepted as Tetrastemma brunneum (Friedrich, 1935) (unaccepted > misspelling - incorrect subsequent spelling)
  65. Species Tetrastemma cruciatus sensu Senz, 1993 accepted as Tetrastemma kirsteueri Senz, 1995 (synonym)
  66. Species Tetrastemma fozensis Gibson & Junoy, 1991 accepted as Tetrastemma fozense Gibson & Junoy, 1991 (unaccepted > incorrect grammatical agreement of specific epithet)
  67. Species Tetrastemma hermaphroditica (Keferstein, 1868) accepted as Tetrastemma hermaphroditicum (Keferstein, 1868) (unaccepted > misspelling - incorrect subsequent spelling)
  68. Species Tetrastemma humilis (Quatrefages, 1846) accepted as Tetrastemma humile (Quatrefages, 1846) (unaccepted > incorrect grammatical agreement of specific epithet)
  69. Species Tetrastemma timofeevai Gibson, 1995 accepted as Tetrastemma maculatum (Timofeeva, 1912) (unaccepted > junior objective synonym)
  70. Species Tetrastemma vittatum (Hubrecht, 1879) sensu Bürger, 1895 accepted as Tetrastemma vittigerum (Bürger, 1904) (synonym)
marine
neuter
Not documented
Norenburg, J.; Chernyshev, A.; Kajihara, H.; Maslakova, S. (2025). World Nemertea Database. Tetrastemma Ehrenberg, 1831. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=122419 on 2026-09-26
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026). European Register of Marine Species. Tetrastemma Ehrenberg, 1831. Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=122419 on 2026-09-26
Date
action
by
2004-12-21 15:54:05Z
created
Gibson, Raymond
2023-02-18 19:06:40Z
changed
Norenburg, Jon
2024-10-31 01:40:22Z
changed
Kajihara, Hiroshi

original description (of Psammamphiporus Gibson, 1989) Gibson, R. (1989). Redescription and taxonomic reappraisal of Amphiporus elongatus Stephenson (Nemertinea, Enopla) from the Firth of Clyde. Zoologica Scripta, 18(2): 357-364, available online at https://doi.org/10.1111/j.1463-6409.1989.tb00130.x [details] Available for editors  PDF available

basis of record Chernyshev, A. V.; Polyakova, N. E.; Kajihara, H.; Norenburg, J. L. (2021). A molecular phylogeny of <i>Tetrastemma</i> and its allies (Nemertea, Monostilifera). <em>Zoologica Scripta.</em> 50 (6): 824–836., available online at https://doi.org/10.1111/zsc.12511 [details] 

additional source Gibson, R. (2005). Nemertina DB. Liverpool John Moore University, UK. [details] 

additional source Hayward, P.J. & J.S. Ryland (Eds.). (1990). The marine fauna of the British Isles and North-West Europe: 1. Introduction and protozoans to arthropods. <em>Clarendon Press: Oxford, UK.</em> 627 pp. (look up in IMIS), available online at https://doi.org/10.1093/oso/9780198573562.001.0001 [details] Available for editors  PDF available
 
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3x5 J.S. Ho Taxonomic Card - Tetrastemma Document hosted within NARMS 
To Biological Information System for Marine Life (BISMaL) 
To European Nucleotide Archive, ENA (Psammamphiporus) (from synonym Psammamphiporus Gibson, 1989)
To European Nucleotide Archive, ENA (Tetrastemma) 
To Genbank 
To Genbank (from synonym Psammamphiporus Gibson, 1989)
To USNM Invertebrate Zoology Nemertea Collection (27 records) 
To Yale Peabody Museum of Natural History (YPM IZ 093898) 
To ITIS
From editor or global species database
Unreviewed