Gymnangium is a genus of hydrozoans belonging to the family Aglaopheniidae. The genus was first described in 1874 by British naturalist, Thomas HincksHincks T. (1874). Notes on Norwegian Hydroida from deep water. Annals and Magazine of Natural History. (4)13: 125-137 He describes the species of the genus as having unprotected gonothecae, whence the genus name, which derives in part from the Greek work for naked, γυμνός. In 1923, Eberhard Stechow, nominated the type species as Halicorniara montagui.
The genus has a cosmopolitan distribution. However, most Gymnangium species "occur in the tropical and subtropical waters of the Indian and Pacific Oceans".
Species WoRMS recognises the following species as accepted in the genus Gymnangium:
Gymnangium africanum Gymnangium allmani Gymnangium arcuatum (Lamouroux, 1816) Gymnangium ascidioides (Bale, 1882) Gymnangium aureum (Watson, 1973) Gymnangium australimage Watson, 2005 Gymnangium baileyi (Bale, 1884) Gymnangium birostratum (Bale, 1914) Gymnangium bryani (Nutting, 1906) Gymnangium comes (Briggs, 1939) Gymnangium expansum (Jäderholm, 1903) Gymnangium explorationis Vervoort & Watson, 2003 Gymnangium exsertum (Millard, 1962) Gymnangium ferlusi (Billard, 1901) Gymnangium goniodes (Briggs, 1915) Gymnangium hians (Busk, 1852) Gymnangium humile (Bale, 1884) Gymnangium ilicistomum (Bale, 1882) Gymnangium indivisum (Fraser, 1936) Gymnangium insigne (Allman, 1874) Gymnangium ishikawai (Stechow, 1908) Gymnangium japonicum Watson & Vervoort, 2001 Gymnangium longirostre (Kirchenpauer, 1872) Gymnangium magnirostre (Nutting, 1927) Gymnangium millardae Ronowicz, 2017 Gymnangium montagui (Billard, 1912) Gymnangium prolifer (Bale, 1882) Gymnangium pusillum Watson, 2018 Gymnangium roretzii (Marktanner-Turneretscher, 1890) Gymnangium sibogae (Billard, 1913) Gymnangium sinuosum (Fraser, 1925) Gymnangium speciosum (Allman, 1877) Gymnangium superbum (Bale, 1882) Gymnangium tenuirostre (Nutting, 1927) Gymnangium thetidis (Ritchie, 1911) Gymnangium tubuliferum (Bale, 1914) Gymnangium undulatum Watson, 2000 Gymnangium urceoliferum (Lamarck, 1816) Gymnangium vegae (Jäderholm, 1903)
References
External links
Gymnangium: Images & occurrence data from GBIF