# Hymedesmia

Hymedesmia is a genus of sponges belonging to the family Hymedesmiidae. The genus is divided into two subgenera, Hymedesmia (Hymedesmia) for species with microscleres, usually chelae, and Hymedesmia (Stylopus) for species lacking microscleres and having only acanthostyles and smooth spicules which are described as tylotes, tornotes or oxea, but are clearly homologous. This distinction is probably artificial and the genus is in need of revision.
The genus has cosmopolitan distribution.

## Species

Species:
* Hymedesmia (Hymedesmia) agariciicola van Soest, 1984
* Hymedesmia (Hymedesmia) anatoliensis Gözcelíoglu, Van Soest, Alvarez & Konuklugíl, 2015
* Hymedesmia (Hymedesmia) anisostrongyloxea Bergquist & Fromont, 1988
* Hymedesmia (Hymedesmia) antarctica Hentschel, 1914
* Hymedesmia (Hymedesmia) anvilensis Ott, McDaniel & Humphrey, 2024
* Hymedesmia (Hymedesmia) armigera (Bowerbank, 1882)
* Hymedesmia (Hymedesmia) atlantica Topsent, 1928
* Hymedesmia (Hymedesmia) aurantiaca Lévi, 1963
* Hymedesmia (Hymedesmia) baculifera (Topsent, 1901)
* Hymedesmia (Hymedesmia) barnesi Goodwin, Brewin & Brickle, 2012
* Hymedesmia (Hymedesmia) basiclavata Topsent, 1928
* Hymedesmia (Hymedesmia) basispinosa Lundbeck, 1910
* Hymedesmia (Hymedesmia) bocki Alander, 1942
* Hymedesmia (Hymedesmia) bonairensis van Soest, 2009
* Hymedesmia (Hymedesmia) bowerbanki Lundbeck, 1910
* Hymedesmia (Hymedesmia) brachyrhabda Lévi & Lévi, 1983
* Hymedesmia (Hymedesmia) bractea Lundbeck, 1910
* Hymedesmia (Hymedesmia) canadensis Ginn, Logan, Thomas & van Soest, 1998
* Hymedesmia (Hymedesmia) caribica Lehnert & van Soest, 1996
* Hymedesmia (Hymedesmia) castanea Sarà, 1964
* Hymedesmia (Hymedesmia) chlorosa Alander, 1942
* Hymedesmia (Hymedesmia) clavigera Lundbeck, 1910
* Hymedesmia (Hymedesmia) cohesibacilla Goodwin & Picton, 2009
* Hymedesmia (Hymedesmia) consanguinea Lundbeck, 1910
* Hymedesmia (Hymedesmia) cordichela Alander, 1942
* Hymedesmia (Hymedesmia) costata Topsent, 1928
* Hymedesmia (Hymedesmia) cratera Goodwin & Picton, 2009
* Hymedesmia (Hymedesmia) crelloides Burton & Rao, 1932
* Hymedesmia (Hymedesmia) croftsae Goodwin, Jones, Neely & Brickle, 2016
* Hymedesmia (Hymedesmia) crux (Schmidt, 1875)
* Hymedesmia (Hymedesmia) cultrisigma Lundbeck, 1910
* Hymedesmia (Hymedesmia) curacaoensis van Soest, 1984
* Hymedesmia (Hymedesmia) curvichela Lundbeck, 1910
* Hymedesmia (Hymedesmia) decepta (Kirkpatrick, 1907)
* Hymedesmia (Hymedesmia) depressa Topsent, 1928
* Hymedesmia (Hymedesmia) dichela (Hentschel, 1911)
* Hymedesmia (Hymedesmia) digitata Lundbeck, 1910
* Hymedesmia (Hymedesmia) donsi Alander, 1937
* Hymedesmia (Hymedesmia) dubia Lundbeck, 1910
* Hymedesmia (Hymedesmia) ebria Alander, 1937
* Hymedesmia (Hymedesmia) filans (Schmidt, 1868)
* Hymedesmia (Hymedesmia) filifera (Schmidt, 1875)
* Hymedesmia (Hymedesmia) flaccida Topsent, 1928
* Hymedesmia (Hymedesmia) gaussiana Hentschel, 1914
* Hymedesmia (Hymedesmia) gibbosa Goodwin, Picton & van Soest, 2011
* Hymedesmia (Hymedesmia) gisleni Alander, 1942
* Hymedesmia (Hymedesmia) gracilisigma Topsent, 1928
* Hymedesmia (Hymedesmia) grandis Lundbeck, 1910
* Hymedesmia (Hymedesmia) gregalis Koltun, 1970
* Hymedesmia (Hymedesmia) gunhildae Alander, 1942
* Hymedesmia (Hymedesmia) gustafsoni Alander, 1942
* Hymedesmia (Hymedesmia) hallmanni Topsent, 1928
* Hymedesmia (Hymedesmia) helgae Stephens, 1916
* Hymedesmia (Hymedesmia) humboldti Salani, Willenz, Fernandez & Hajdu, 2022
* Hymedesmia (Hymedesmia) inflata (Alander, 1937)
* Hymedesmia (Hymedesmia) irregularis Lundbeck, 1910
* Hymedesmia (Hymedesmia) jamaicensis van Soest, 1984
* Hymedesmia (Hymedesmia) jeanvaceleti Van Soest & Hooper, 2020
* Hymedesmia (Hymedesmia) jecusculum (Bowerbank, 1866)
* Hymedesmia (Hymedesmia) jugalis Topsent, 1928
* Hymedesmia (Hymedesmia) koehleri (Topsent, 1896)
* Hymedesmia (Hymedesmia) lacera Lundbeck, 1910
* Hymedesmia (Hymedesmia) laevistylus Lundbeck, 1910
* Hymedesmia (Hymedesmia) lamina Lundbeck, 1910
* Hymedesmia (Hymedesmia) lancifera (Topsent, 1906)
* Hymedesmia (Hymedesmia) laptikhovskyi Goodwin, Jones, Neely & Brickle, 2016
* Hymedesmia (Hymedesmia) latrunculioides Lundbeck, 1910
* Hymedesmia (Hymedesmia) lenta Descatoire, 1966
* Hymedesmia (Hymedesmia) leptochela Hentschel, 1914
* Hymedesmia (Hymedesmia) levis Lundbeck, 1910
* Hymedesmia (Hymedesmia) lindstroemae Cárdenas & Thollesson, 2016
* Hymedesmia (Hymedesmia) lobichela Topsent, 1928
* Hymedesmia (Hymedesmia) longistylus Lundbeck, 1910
* Hymedesmia (Hymedesmia) lundbecki Dendy, 1924
* Hymedesmia (Hymedesmia) macrosigma Lundbeck, 1910
* Hymedesmia (Hymedesmia) mamillaris (Fristedt, 1885)
* Hymedesmia (Hymedesmia) mannarensis Thomas, 1970
* Hymedesmia (Hymedesmia) manubriata (Topsent, 1928)
* Hymedesmia (Hymedesmia) mariondufresni Boury-Esnault & van Beveren, 1982
* Hymedesmia (Hymedesmia) matthesi Arndt, 1941
* Hymedesmia (Hymedesmia) mertoni Hentschel, 1912
* Hymedesmia (Hymedesmia) microchela Alander, 1942
* Hymedesmia (Hymedesmia) microstrongyla Bergquist & Fromont, 1988
* Hymedesmia (Hymedesmia) minuta Alander, 1935
* Hymedesmia (Hymedesmia) mollis Lundbeck, 1910
* Hymedesmia (Hymedesmia) mucronata (Topsent, 1904)
* Hymedesmia (Hymedesmia) murrayi Burton, 1959
* Hymedesmia (Hymedesmia) mutabilis (Topsent, 1904)
* Hymedesmia (Hymedesmia) noramaloneae Goodwin, Berman & Hendry, 2019
* Hymedesmia (Hymedesmia) norvegica Thiele, 1903
* Hymedesmia (Hymedesmia) nummota Laubenfels, 1936
* Hymedesmia (Hymedesmia) nummulus Lundbeck, 1910
* Hymedesmia (Hymedesmia) occulta Bowerbank in Norman, 1869
* Hymedesmia (Hymedesmia) omissa Topsent, 1938
* Hymedesmia (Hymedesmia) orientalis Koltun, 1962
* Hymedesmia (Hymedesmia) oxneri Topsent, 1928
* Hymedesmia (Hymedesmia) pachychela Topsent, 1928
* Hymedesmia (Hymedesmia) palmatichela Topsent, 1928
* Hymedesmia (Hymedesmia) palmatichelifera van Soest, 1984
* Hymedesmia (Hymedesmia) pansa Bowerbank, 1882
* Hymedesmia (Hymedesmia) parva Stephens, 1915
* Hymedesmia (Hymedesmia) paupertas (Bowerbank, 1866)
* Hymedesmia (Hymedesmia) peachii Bowerbank, 1882
* Hymedesmia (Hymedesmia) pennata Brøndsted, 1932
* Hymedesmia (Hymedesmia) perforata Lundbeck, 1910
* Hymedesmia (Hymedesmia) peruana Salani, Willenz, Fernandez & Hajdu, 2022
* Hymedesmia (Hymedesmia) pilata Bowerbank, 1882
* Hymedesmia (Hymedesmia) planca Lundbeck, 1910
* Hymedesmia (Hymedesmia) planisigma Topsent, 1928
* Hymedesmia (Hymedesmia) platychela Lundbeck, 1910
* Hymedesmia (Hymedesmia) plicata Topsent, 1928
* Hymedesmia (Hymedesmia) poicilacantha Alander, 1942
* Hymedesmia (Hymedesmia) procumbens Lundbeck, 1910
* Hymedesmia (Hymedesmia) promina Turner & Lonhart, 2023
* Hymedesmia (Hymedesmia) prostrata Thiele, 1903
* Hymedesmia (Hymedesmia) proxima Lundbeck, 1910
* Hymedesmia (Hymedesmia) pugio Lundbeck, 1910
* Hymedesmia (Hymedesmia) quadridentata Cardone, Pansini, Corriero & Bertolino, 2019
* Hymedesmia (Hymedesmia) rathlinia Goodwin & Picton, 2009
* Hymedesmia (Hymedesmia) rhaphigena (Topsent, 1904)
* Hymedesmia (Hymedesmia) rissoi Topsent, 1936
* Hymedesmia (Hymedesmia) rowi Van Soest, 2017
* Hymedesmia (Hymedesmia) rugosa Lundbeck, 1910
* Hymedesmia (Hymedesmia) saccea (Schmidt, 1864)
* Hymedesmia (Hymedesmia) santarositae Salani, Willenz, Fernandez & Hajdu, 2022
* Hymedesmia (Hymedesmia) senegalensis Lévi, 1956
* Hymedesmia (Hymedesmia) serrulata Vacelet, 1969
* Hymedesmia (Hymedesmia) similis Lundbeck, 1910
* Hymedesmia (Hymedesmia) simillima Lundbeck, 1910
* Hymedesmia (Hymedesmia) spinata Calcinai, Bavestrello, Bertolino, Pica, Wagner & Cerrano, 2013
* Hymedesmia (Hymedesmia) spiniarcuata Lévi & Lévi, 1983
* Hymedesmia (Hymedesmia) spinosa Stephens, 1916
* Hymedesmia (Hymedesmia) splenium Lundbeck, 1910
* Hymedesmia (Hymedesmia) stellifera Goodwin & Picton, 2009
* Hymedesmia (Hymedesmia) stoneae Goodwin, Picton & van Soest, 2011
* Hymedesmia (Hymedesmia) storea Lundbeck, 1910
* Hymedesmia (Hymedesmia) stylata Lundbeck, 1910
* Hymedesmia (Hymedesmia) stylophora Thomas, 1970
* Hymedesmia (Hymedesmia) tendali Goodwin, Picton & van Soest, 2011
* Hymedesmia (Hymedesmia) tenuisigma Lundbeck, 1910
* Hymedesmia (Hymedesmia) tenuissima (Dendy, 1905)
* Hymedesmia (Hymedesmia) thielei Alander, 1942
* Hymedesmia (Hymedesmia) trichoma Lundbeck, 1910
* Hymedesmia (Hymedesmia) truncata Lundbeck, 1910
* Hymedesmia (Hymedesmia) uchinourensis Hoshino, 1981
* Hymedesmia (Hymedesmia) umbelliformis Goodwin & Picton, 2009
* Hymedesmia (Hymedesmia) unguifera Burton, 1929
* Hymedesmia (Hymedesmia) vaceleti Díaz & Pomponi, 2018
* Hymedesmia (Hymedesmia) valentinae Goodwin, Picton & van Soest, 2011
* Hymedesmia (Hymedesmia) velata Topsent, 1928
* Hymedesmia (Hymedesmia) veneta (Schmidt, 1862)
* Hymedesmia (Hymedesmia) verrucosa Lundbeck, 1910
* Hymedesmia (Hymedesmia) versicolor (Topsent, 1893)
* Hymedesmia (Hymedesmia) vicaria Wiedenmayer in Hooper & Wiedenmayer, 1994
* Hymedesmia (Hymedesmia) vomerula Topsent, 1928
* Hymedesmia (Hymedesmia) williami Van Soest & Hooper, 2020
* Hymedesmia (Hymedesmia) xavierae Goodwin, Picton & van Soest, 2011
* Hymedesmia (Hymedesmia) zetlandica Bowerbank, 1864
* Hymedesmia (Hymedesmia) stepanovii (Czerniavsky, 1880) (uncertain > taxon inquirendum)
* Hymedesmia (Stylopus) acerata (Topsent, 1904)
* Hymedesmia (Stylopus) aequata Lundbeck, 1910
* Hymedesmia (Stylopus) alcoladoi Van Soest, 2017
* Hymedesmia (Stylopus) arndti (de Laubenfels, 1930)
* Hymedesmia (Stylopus) australiensis (Hentschel, 1911)
* Hymedesmia (Stylopus) australis (Bergquist & Fromont, 1988)
* Hymedesmia (Stylopus) coriacea (Fristedt, 1885)
* Hymedesmia (Stylopus) crami Goodwin & Picton, 2009
* Hymedesmia (Stylopus) dendyi Burton, 1930
* Hymedesmia (Stylopus) dermata Lundbeck, 1910
* Hymedesmia (Stylopus) ernsthentscheli Van Soest & Hooper, 2020
* Hymedesmia (Stylopus) fristedti (Topsent, 1916)
* Hymedesmia (Stylopus) hentscheli Van Soest & Hooper, 2020
* Hymedesmia (Stylopus) hibernica Stephens, 1916
* Hymedesmia (Stylopus) indivisa (Topsent, 1928)
* Hymedesmia (Stylopus) lissostyla (Bergquist & Fromont, 1988)
* Hymedesmia (Stylopus) longurius Lundbeck, 1910
* Hymedesmia (Stylopus) methanophila Cárdenas, 2019
* Hymedesmia (Stylopus) mucronella Lundbeck, 1910
* Hymedesmia (Stylopus) nigrescens (Topsent, 1925)
* Hymedesmia (Stylopus) obtusata (Topsent, 1904)
* Hymedesmia (Stylopus) oculifera (Hentschel, 1911)
* Hymedesmia (Stylopus) odhneri (Alander, 1942)
* Hymedesmia (Stylopus) parvispicula Burton & Rao, 1932
* Hymedesmia (Stylopus) perlucida Calcinai, Bavestrello, Bertolino, Pica, Wagner & Cerrano, 2013
* Hymedesmia (Stylopus) pharos Goodwin, Brewin & Brickle, 2012
* Hymedesmia (Stylopus) primitiva Lundbeck, 1910
* Hymedesmia (Stylopus) pulposus (Topsent, 1925)
* Hymedesmia (Stylopus) stephensi Burton, 1930
* Hymedesmia (Stylopus) stylifera (Alander, 1942)
* Hymedesmia (Stylopus) tornotata Lundbeck, 1910
* Hymedesmia ramentum Koltun, 1970
Species awaiting binomial:
* Hymedesmia sp. 'Parpal Dumplin'