WoRMS taxon details
Heptacyclus scorpii (Malm, 1863)
410299 (urn:lsid:marinespecies.org:taxname:410299)
accepted
Species
Janusion scorpii (Malm, 1863) · unaccepted > junior subjective synonym
Malmiana scorpii (Malm, 1863) · unaccepted (superseded subsequent combination)
Ottoniobdella scorpii (Malm, 1863) · unaccepted (superseded subsequent combination)
Platybdella scorpii Malm, 1863 · unaccepted (superseded original combination)
marine, brackish, fresh, terrestrial
(of Platybdella scorpii Malm, 1863) Malm, A. W. (1863). Svenska Iglar, Disciferae, afbildade efter lefvande examplar och beskrifna [Swedish Leeches, Disciferae, illustrated after living specimens and described]. <em>Göteborgs Kungliga Vetenskaps-och Vitterhets-samhället Handlingar.</em> 8: 151-259 + index + plates 3-5., available online at https://books.google.com/books?id=4fyovoG7AmcC&source=gbs_navlinks_s [details] 
WoRMS (2026). Heptacyclus scorpii (Malm, 1863). Accessed at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=410299 on 2026-06-03
Date
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Nomenclature
original description
(of Platybdella scorpii Malm, 1863) Malm, A. W. (1863). Svenska Iglar, Disciferae, afbildade efter lefvande examplar och beskrifna [Swedish Leeches, Disciferae, illustrated after living specimens and described]. <em>Göteborgs Kungliga Vetenskaps-och Vitterhets-samhället Handlingar.</em> 8: 151-259 + index + plates 3-5., available online at https://books.google.com/books?id=4fyovoG7AmcC&source=gbs_navlinks_s [details]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
From editor or global species database
Editor's comment Janusion scorpii, the type species of Janusion Leigh-Sharpe, 1933, cannot be moved to Heptacyclus Vasileyev, 1939 because Janusion genus has priority over Heptacyclus. The usage in which the recombination was made has not been recorded in WoRMS. If the two genera are synonyms (this may not be known with certainty) the recombinations would be Heptacyclus species moving to Janusion. The situation presumably requires further work. Likewise Malmiana Strand 1942 may be the same (according to Sawyer, 1986: 664) [G. Read, October 2023] [details]
To Biodiversity Heritage Library (1 publication) (from synonym Janusion scorpii (Malm, 1863))
To Biodiversity Heritage Library (2 publications) (from synonym Malmiana scorpii (Malm, 1863))
To Biodiversity Heritage Library (4 publications) (from synonym Ottoniobdella scorpii (Malm, 1863))
To European Nucleotide Archive, ENA (Malmiana scorpii) (from synonym Malmiana scorpii (Malm, 1863))
To GenBank (3 nucleotides; 2 proteins) (from synonym Malmiana scorpii (Malm, 1863))
To PESI
To PESI (from synonym Malmiana scorpii (Malm, 1863))
To PESI (from synonym Janusion scorpii (Malm, 1863))
To USNM Invertebrate Zoology Annelida Collection (7 records) (from synonym Malmiana scorpii (Malm, 1863))
To Biodiversity Heritage Library (2 publications) (from synonym Malmiana scorpii (Malm, 1863))
To Biodiversity Heritage Library (4 publications) (from synonym Ottoniobdella scorpii (Malm, 1863))
To European Nucleotide Archive, ENA (Malmiana scorpii) (from synonym Malmiana scorpii (Malm, 1863))
To GenBank (3 nucleotides; 2 proteins) (from synonym Malmiana scorpii (Malm, 1863))
To PESI
To PESI (from synonym Malmiana scorpii (Malm, 1863))
To PESI (from synonym Janusion scorpii (Malm, 1863))
To USNM Invertebrate Zoology Annelida Collection (7 records) (from synonym Malmiana scorpii (Malm, 1863))
