MSBIAS taxon details
Tetrastemma Ehrenberg, 1831
122419 (urn:lsid:marinespecies.org:taxname:122419)
accepted
Genus
Tetrastemma flavidum Ehrenberg, 1828 (type by monotypy)
Psammamphiporus Gibson, 1989 · unaccepted > junior subjective synonym
- Species Tetrastemma ambiguum Riches, 1893
- Species Tetrastemma angulatus Senz, 1993
- Species Tetrastemma beaumonti (Southern, 1913)
- Species Tetrastemma candidum (Müller, 1774)
- Species Tetrastemma coronatum (Quatrefages, 1846)
- Species Tetrastemma elongatum (Stephenson, 1911)
- Species Tetrastemma flavidum Ehrenberg, 1828
- Species Tetrastemma fozense Gibson & Junoy, 1991
- Species Tetrastemma herouardi (Oxner, 1908)
- Species Tetrastemma kirsteueri Senz, 1995
- Species Tetrastemma longissimum Bürger, 1895
- Species Tetrastemma melanocephalum (Johnston, 1837)
- Species Tetrastemma quatrefagesi (Bürger, 1904)
- Species Tetrastemma robertianae McIntosh, 1874
- Species Tetrastemma vermiculus (Quatrefages, 1846)
- Species Tetrastemma cephalophorum Bürger, 1895 (uncertain > nomen dubium)
- Species Tetrastemma helvolum Bürger, 1895 (uncertain > nomen dubium)
- Species Tetrastemma peltatum Bürger, 1895 (uncertain > nomen dubium)
- Species Tetrastemma cruciatus sensu Senz, 1993 accepted as Tetrastemma kirsteueri Senz, 1995 (synonym)
- Species Tetrastemma fozensis Gibson & Junoy, 1991 accepted as Tetrastemma fozense Gibson & Junoy, 1991 (unaccepted > incorrect grammatical agreement of specific epithet)
marine
neuter
Not documented
Norenburg, J.; Chernyshev, A.; Kajihara, H.; Maslakova, S. (2026). World Nemertea Database. Tetrastemma Ehrenberg, 1831. Accessed through: The UK Marine Environmental Data and Information Network (2026) Marine Species of Britain, Ireland and Adjacent Seas (MSBIAS): a checklist of species derived from the UNICORN and Marine Recorder applications at: https://www.marinespecies.org/msbias/aphia.php?p=taxdetails&id=122419 on 2026-08-20
The UK Marine Environmental Data and Information Network (2026). Marine Species of Britain, Ireland and Adjacent Seas (MSBIAS): a checklist of species derived from the UNICORN and Marine Recorder applications. Tetrastemma Ehrenberg, 1831. Accessed at: https://marinespecies.org/msbias/aphia.php?p=taxdetails&id=122419 on 2026-08-20
Date
action
by
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 
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
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
Present Inaccurate Introduced: alien Containing type locality
3x5 J.S. Ho Taxonomic Card - Tetrastemma 
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
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
Image from typetaxon
Unreviewed
Hosted externally