1. Genus Elisesione Salazar-Vallejo, 2016
2. Subfamily Hesioninae Grube, 1850
   1. Tribe Hesionini Grube, 1850
      1. Genus Dalhousia McIntosh, 1885
      2. Genus Dalhousiella McIntosh, 1901
      3. Genus Hesione Lamarck, 1818
      4. Genus Lamprophaes Grube, 1867
      5. Genus Leocrates Kinberg, 1866
      6. Genus Leocratides Ehlers, 1908
      7. Genus Paradalhousia Salazar-Vallejo, 2020
      8. Genus Paralamprophaea Salazar-Vallejo, 2020
      9. Genus Paraleocrates Salazar-Vallejo, 2020
      10. Genus Fallacia Quatrefages, 1866 accepted as Hesione Lamarck, 1818 (homonym, subjective synonym)
      11. Genus Hesionella Wesenberg-Lund, 1950 accepted as Elisesione Salazar-Vallejo, 2016 (twice replaced junior homonym)
      12. Genus Lamproderma Grube, 1877 accepted as Leocrates Kinberg, 1866 (subjective synonym)
      13. Genus Lamprophaea Salazar-Vallejo, 2020 accepted as Lamprophaes Grube, 1867 (unjustified emendation of the spelling of Lamprophaes, to which it becomes a junior objective synonym)
      14. Genus Tyrrhena Claparède, 1868 accepted as Leocrates Kinberg, 1866 (subjective synonym)
      15. Genus Wesenbergia Hartman, 1955 accepted as Elisesione Salazar-Vallejo, 2016 (replaced junior homonym to Wesenbergia Kryger, 1943)
   2. Genus Lizardia Pleijel & Rouse, 2005
   3. Genus Pleijelius Salazar-Vallejo & Orensanz, 2006
3. Subfamily Ophiodrominae Pleijel, 1998
   1. Tribe Amphidurini Pleijel, Rouse, Sundkvist & Nygren, 2012
      1. Genus Amphiduropsis Pleijel, 2001
      2. Genus Amphiduros Hartman, 1959
      3. Genus Neogyptis Pleijel, Rouse, Sundkvist & Nygren, 2012
      4. Genus Parahesione Pettibone, 1956
      5. Genus Amphidromus Hessle, 1925 accepted as Amphiduros Hartman, 1959 (unaccepted > junior homonym, replaced junior homonym)
   2. Tribe Gyptini
      1. Genus Gyptis Marion, 1874
      2. Genus Hesiobranchia Ruta & Pleijel, 2006
      3. Genus Hesiodeira Blake & Hilbig, 1990
      4. Genus Hesiolyra Blake, 1985
      5. Genus Paragyptis Pocklington, 1984 accepted as Gyptis Marion, 1874 (subjective synonym)
   3. Tribe Ophiodromini
      1. Genus Heteropodarke Hartmann-Schröder, 1962
      2. Genus Mahesia Westheide, 2000
      3. Genus Oxydromus Grube, 1855
      4. Genus Podarkeopsis Laubier, 1961
      5. Genus Sinohesione Westheide, Purschke & Mangerich, 1994
      6. Genus Anoplonereis Giard, 1882 accepted as Oxydromus Grube, 1855 (possible subjective synonym)
      7. Genus Irma Grube, 1878 accepted as Oxydromus Grube, 1855 (subjective synonym)
      8. Genus Ophiodromus Sars, 1862 accepted as Oxydromus Grube, 1855 (subjective synonym)
      9. Genus Orseis Ehlers, 1864 accepted as Oxydromus Grube, 1855 (subjective synonym)
      10. Genus Orthodromus Ehlers, 1908 accepted as Oxydromus Grube, 1855 (subjective synonym)
      11. Genus Parasyllidea Pettibone, 1961 accepted as Oxydromus Grube, 1855 (subjective synonym)
      12. Genus Podarke Ehlers, 1864 accepted as Oxydromus Grube, 1855 (subjective synonym)
      13. Genus Schmardiella Czerniavsky, 1882 accepted as Oxydromus Grube, 1855 (subjective synonymy)
4. Subfamily Psamathinae Pleijel, 1998
   1. Genus Bonuania Pillai, 1965
   2. Genus Hesiospina Imajima & Hartman, 1964
   3. Genus Micropodarke Okuda, 1938
   4. Genus Nereimyra Blainville, 1828
   5. Genus Psamathe Johnston, 1836
   6. Genus Sirsoe Pleijel, 1998
   7. Genus Syllidia Quatrefages, 1865
   8. Genus Castalia Savigny, 1822 accepted as Nereimyra Blainville, 1828 (junior homonym)
   9. Genus Halimede Rathke, 1843 accepted as Nereimyra Blainville, 1828 (junior homonym)
   10. Genus Kefersteinia Quatrefages, 1866 accepted as Psamathe Johnston, 1836 (subjective synonym)
   11. Genus Magalia Marion, 1874 accepted as Syllidia Quatrefages, 1865 (subjective synonym)
   12. Subtribe Megalia [auct.] accepted as Magalia Marion, 1874 accepted as Syllidia Quatrefages, 1865 (lapsus for Magalia)
   13. Genus Neopodarke Hartman, 1965 accepted as Nereimyra Blainville, 1828 (subjective synonym)
   14. Genus Psammate [auctt. misspelling] accepted as Psamathe Johnston, 1836 (lapsus)
   15. Genus Pseudosyllidia Czerniavsky, 1882 accepted as Syllidia Quatrefages, 1865 (objective synonym)
   16. Genus Vrijenhoekia Pleijel, Rouse, Ruta, Wiklund & Nygren, 2008 accepted as Sirsoe Pleijel, 1998 (unaccepted > junior subjective synonym, molecular analysis places type species wthin Sirsoe)
   17. Genus Hesiocaeca Hartman, 1965 (uncertain > taxon inquirendum)
   18. Genus Periboea Ehlers, 1864 (uncertain > taxon inquirendum, no type material)
5. Genus Synsyllidea Uchida in Uchida, Lopéz & Sato, 2019
6. Genus Cirrosyllis Schmarda, 1861 accepted as Oxydromus Grube, 1855 (subjective synonym)
7. Subfamily Hesiolyrinae Pleijel, 1998 accepted as Gyptini (subjective synonym)
8. Genus Synsyllidia Uchida, 2004 accepted as Synsyllidea Uchida in Uchida, Lopéz & Sato, 2019 (type is unavailable name (Art.16))
9. Genus Ichthyohesione Uchida, 2004 (uncertain > nomen dubium, type is unavailable name (Art.16))
10. Genus Parahesiocaeca Uchida, 2004 (uncertain > nomen dubium, type is unavailable name (Art.16))
11. Genus Parapodarke Czerniavsky, 1882 (uncertain > nomen dubium, indeterminable type species)

 The webpage text is licensed under a Creative Commons Attribution 4.0 License