Turbellarians taxon details

Opisthocystis Sekera, 1911

GIF file

142374  (urn:lsid:marinespecies.org:taxname:142374)

  1. Biota
  2. Animalia (Kingdom)
  3. Platyhelminthes (Phylum)
  4. Rhabditophora (Subphylum)
  5. Rhabdocoela (Order)
  6. Kalyptorhynchia (Suborder)
  7. Eukalyptorhynchia (Infraorder)
  8. Polycystididae (Family)
  9. Polycystidinae (Subfamily)
  10. Opisthocystis (Genus)
accepted
Genus
Polycystis (Opisthocystis) · unaccepted (Karling (1963) mentions...)  
Karling (1963) mentions Opisthocystis as a subgenus of Polycystis, followed by Artois (2001). However, Sekera (1911) never described it as a subgenus, so the mentioning by Karling (1963) and Artois (2001) as a subgenus is erroneous.

Ordering

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Children Display

  1. Species Opisthocystis abyssalis Timoshkin, 1986
  2. Species Opisthocystis aleksandri Timoshkin, Zaytseva & Gutsol, 2009
  3. Species Opisthocystis angarensis (Sibiriakowa, 1929) Karling, 1956
  4. Species Opisthocystis bilobatus (Nasonov, 1935) Karling, 1956
  5. Species Opisthocystis boykoi Timoshkin, Zaytseva & Gutsol, 2012
  6. Species Opisthocystis campanulatus (Nasonov, 1935) Karling, 1956
  7. Species Opisthocystis cariottus Timoshkin, 1986
  8. Species Opisthocystis curvistylus Timoshkin, 1986
  9. Species Opisthocystis drobyshevae Timoshkin, 2010
  10. Species Opisthocystis evdonini Timoshkin, 2010
  11. Species Opisthocystis goettei (Bresslau, 1906) Sekera, 1911
  12. Species Opisthocystis gyratricelloides Timoshkin & Zaytseva, 2012
  13. Species Opisthocystis hendelbergi Timoshkin, 2010
  14. Species Opisthocystis humilistylus Timoshkin, 2010
  15. Species Opisthocystis igori Timoshkin, Zaytseva & Gutsol, 2009
  16. Species Opisthocystis intersticialis Lukhnev & Timoshkin, 2014
  17. Species Opisthocystis irregularis (Nasonov, 1935) Karling, 1956
  18. Species Opisthocystis joffei Timoshkin, 2010
  19. Species Opisthocystis kornilorum Timoshkin, Zaytseva & Gutsol, 2009
  20. Species Opisthocystis kotikovae Timoshkin, 2010
  21. Species Opisthocystis kremlevae Timoshkin, Zaytseva & Gutsol, 2012
  22. Species Opisthocystis marinae Timoshkin, Zaytseva & Gutsol, 2009
  23. Species Opisthocystis meyeri Timoshkin, 2009
  24. Species Opisthocystis multifidus (Nasonov, 1935) Karling, 1956
  25. Species Opisthocystis novikovae Timoshkin, 2010
  26. Species Opisthocystis novitzkyi Timoshkin, Zaytseva & Gutsol, 2009
  27. Species Opisthocystis octopropagostylus Lukhnev & Timoshkin, 2014
  28. Species Opisthocystis pedistylus Timoshkin, 1986
  29. Species Opisthocystis riegeri Timoshkin, 2010
  30. Species Opisthocystis sabussovi Timoshkin, 1986
  31. Species Opisthocystis seehauseni Timoshkin, 2010
  32. Species Opisthocystis selivanovae Timoshkin, 2010
  33. Species Opisthocystis sokolovi Timoshkin, 2010
  34. Species Opisthocystis stepashi Timoshkin, Zaytseva & Gutsol, 2009
  35. Species Opisthocystis sturmbaueri Timoshkin, Zaytseva & Gutsol, 2009
  36. Species Opisthocystis trifidostylus Timoshkin, 2010
  37. Species Opisthocystis trifidus (Nasonov, 1935) Karling, 1956
  38. Species Opisthocystis umylinae Timoshkin, 2010
  39. Species Opisthocystis votyakovi Timoshkin, 2010
  40. Species Opisthocystis wilkei Timoshkin, 2010
  41. Species Opisthocystis zerbstboroffkae Timoshkin, 2010
  42. Species Opisthocystis multifida accepted as Opisthocystis multifidus (Nasonov, 1935) Karling, 1956 (Emendation of gender of epithet by Artois & Schockaert (2003). See note on the genus Opisthocystis as to the gender of the genus name.)
marine, fresh
recent only
masculine
Sekera, E. (1911). Studien über Turbellarien. <em>Sitzungsberichte der königligen Böhmischen Gesellschaft der Wissenschaften zu Prag.</em> 13: 1–38: 1 plate. [details] OpenAccess publication
Nomenclature Normally, names ending on "-cystis" are feminine. However, in case of Opisthocystis the name has always been treated as...  
Nomenclature Normally, names ending on "-cystis" are feminine. However, in case of Opisthocystis the name has always been treated as masculine. Therefore, the name is treated as masculine here. [details]
Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2024). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Opisthocystis Sekera, 1911. Accessed at: https://www.marinespecies.org/turbellarians/aphia.php?p=taxdetails&id=142374 on 2026-02-24
Date
action
by
2004-12-21 15:54:05Z
created
Faubel, Anno
2005-04-26 09:26:10Z
changed
Artois, Tom
2005-07-12 10:18:48Z
changed
Braeckman, Ulrike
2005-07-26 12:02:34Z
changed
Vanden Berghe, Edward
2010-06-17 13:18:29Z
checked
Tyler, Seth
2016-07-26 16:56:17Z
changed
Artois, Tom
2021-05-16 12:16:35Z
changed
Artois, Tom

original description Sekera, E. (1911). Studien über Turbellarien. <em>Sitzungsberichte der königligen Böhmischen Gesellschaft der Wissenschaften zu Prag.</em> 13: 1–38: 1 plate. [details] OpenAccess publication

original description (of Klattia Kepner, Stirewalt & Ferguson, 1939) Kepner W.A., Stirewalt M.A. & Fergusson F.F. (1939) Klattia virginiensis n. g. n. sp. Zoologischer Anzeiger 125: 299-309 [details] 

additional source Schockaert, E. R.; Jouk, P. E. H.; Martens, P. M. (1989). Free-living Plathelminthes from the Belgian coast and adjacent areas. <em>In: Wouters, K.; Baert, L. (Ed.) (1989). Proceedings of the Symposium Invertebrates of Belgium.</em> pp. 19-25. (look up in IMIS) [details] OpenAccess publication

additional source Faubel, A.; Noreña, C. (2001). Turbellaria, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 123-136 (look up in IMIS) [details] Available for editors  PDF available

additional source Tyler, S.; Schilling, S.; Hooge, M.; Bush, L. F. (comp.). (2006-2016). Turbellarian taxonomic database. Version 1.7., available online at http://turbellaria.umaine.edu [details] 

basis of record (of Polycystis (Opisthocystis)) Karling, T. G. (1963). Die Turbellarien ostfennoskandiens. V. Neorhabdocoela. 3. Kalyptorhynchia. <em>Fauna Fenica.</em> 17: 5-59. [details] Available for editors  PDF available

basis of record (of Klattia Kepner, Stirewalt & Ferguson, 1939) Tom Artois; Ernest Schockaert. (2005-2017). World database of Proseriata and Kalyptorhynchia. (look up in IMIS) [details] 

basis of record (of Macrorhynchus (Opisthocystis) Sekera, 1911) Tom Artois; Ernest Schockaert. (2005-2017). World database of Proseriata and Kalyptorhynchia. (look up in IMIS) [details] 

basis of record (of Macrorhynchus (Opisthocystis) Sekera, 1911) Reisinger, E. (1926). Zur Turbellarienfauna der Antarktis. <em>Deutsche Südpolar Expedition 1901-1903.</em> 417-462.
note: Described as a genus by Sekera (1911), but considered a subgenus of Macrorhynchus by Reisinger (1926). Later literature never followed the latter decision. [details] Available for editors  PDF available

additional source (of Klattia Kepner, Stirewalt & Ferguson, 1939) Neave, Sheffield Airey. (1939-1996). Nomenclator Zoologicus vol. 1-10 Online. <em>[Online Nomenclator Zoologicus at Checklistbank. Ubio link has gone].</em> , available online at https://www.checklistbank.org/dataset/126539/about [details] 

additional source (of Polycystis (Opisthocystis)) Artois, T. (2001). Cladistic analysis of the Polycystididae (Platyhelminthes Kalyptorhynchia), with application of phylogenetic nomenclature. <em>PhD Thesis. Limburgs Universitair Centrum: Diepenbeek.</em> [1: Text, 2: Figures] pp. (look up in IMIS) [details] 

source of synonymy (of Klattia Kepner, Stirewalt & Ferguson, 1939) Karling, T. G. (1963). Die Turbellarien ostfennoskandiens. V. Neorhabdocoela. 3. Kalyptorhynchia. <em>Fauna Fenica.</em> 17: 5-59. [details] Available for editors  PDF available
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
From editor or global species database
Nomenclature Normally, names ending on "-cystis" are feminine. However, in case of Opisthocystis the name has always been treated as masculine. Therefore, the name is treated as masculine here. [details]
    Definitions

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To European Nucleotide Archive, ENA (Klattia) (from synonym Klattia Kepner, Stirewalt & Ferguson, 1939)
To European Nucleotide Archive, ENA (Opisthocystis) 
To Genbank 
To Genbank (from synonym Klattia Kepner, Stirewalt & Ferguson, 1939)
To the Turbellarian Taxonomic Database Logo Turbellarians  (from synonym Klattia Kepner, Stirewalt & Ferguson, 1939)
To the Turbellarian Taxonomic Database Logo Turbellarians  
To the Turbellarian Taxonomic Database Logo Turbellarians  (from synonym Polycystis (Opisthocystis))
To the Turbellarian Taxonomic Database Logo Turbellarians  (from synonym Macrorhynchus (Opisthocystis) Sekera, 1911)
From editor or global species database
Unreviewed
Website and databases developed and hosted by VLIZ · Page generated 2026-03-15 · contact: Seth Tyler