WoRMS taxon details

Hydractiniidae L. Agassiz, 1862

1601  (urn:lsid:marinespecies.org:taxname:1601)

accepted
Family
Genus Bouillonactinia Miglietta, McNally & Cunningham, 2010
Genus Clava Gmelin, 1788
  » Species Clava multicornis (Forsskål, 1775)
  » Species Clava nana Motz-Kossowska, 1905 (taxon inquirendum)
  » Species Clava amphorata Bosc, 1797 accepted as Zanclea alba (Meyen, 1834) (possible synonym)
  » Species Clava capitata Thompson, 1844 accepted as Hydractinia echinata (Fleming, 1828)
  » Species Clava cornea Wright, 1857 accepted as Clava multicornis (Forsskål, 1775) (synonym)
  » Species Clava diffusa Allman, 1863 accepted as Clava multicornis (Forsskål, 1775) (synonym)
  » Species Clava krempfi Billard, 1919 accepted as Pteroclava krempfi (Billard, 1919) (basionym)
  » Species Clava leptostyla L. Agassiz, 1862 accepted as Clava multicornis (Forsskål, 1775) (synonym)
  » Species Clava nodosa Wright, 1863 accepted as Clava multicornis (Forsskål, 1775) (synonym)
  » Species Clava parasitica Gmelin, 1788 accepted as Clava multicornis (Forsskål, 1775) (synonym)
  » Species Clava squamata (Müller, 1776) accepted as Clava multicornis (Forsskål, 1775) (Synonym)
Genus Clavactinia Thornely, 1904
Genus Cnidostoma Vanhöffen, 1911
Genus Distichozoon Cairns, 2015
Genus Fiordlandia Schuchert, 1996
Genus Hydractinia Van Beneden, 1844
  » Species Hydractinia aculeata (Wagner, 1833)
  » Species Hydractinia aggregata Fraser, 1911
  » Species Hydractinia altispina Millard, 1955
  » Species Hydractinia anechinata (Ritchie, 1907)
  » Species Hydractinia angusta Hartlaub, 1904
  » Species Hydractinia apicata (Kramp, 1959)
  » Species Hydractinia arctica (Jäderholm, 1902)
  » Species Hydractinia arge (Clarke, 1882)
  » Species Hydractinia armata Fraser, 1940
  » Species Hydractinia bayeri Hirohito, 1984
  » Species Hydractinia betkensis (Watson, 1978)
  » Species Hydractinia brachyurae (Hirohito, 1988)
  » Species Hydractinia californica Torrey, 1904
  » Species Hydractinia canalifera Millard, 1957
  » Species Hydractinia carica Bergh, 1887
  » Species Hydractinia carolinae Fraser, 1912
  » Species Hydractinia constrictura Huang, Xu & Guo, 2015
  » Species Hydractinia cryptogonia Hirohito, 1988
  » Species Hydractinia cytaeiformis Vervoort, 2006
  » Species Hydractinia denhami (Thornely, 1904)
  » Species Hydractinia diogenes Millard, 1959
  » Species Hydractinia disjuncta Fraser, 1938
  » Species Hydractinia dongshanensis Xu & Huang, 2006
  » Species Hydractinia echinata (Fleming, 1828)
  » Species Hydractinia epidocleensis Leloup, 1931
  » Species Hydractinia epispongia Fraser, 1938
  » Species Hydractinia gorgonoides (Nutting, 1906)
  » Species Hydractinia granulata Hirohito, 1988
  » Species Hydractinia guangxiensis Huang, Li & Zhang, 2010
  » Species Hydractinia hancocki Fraser, 1938
  » Species Hydractinia inabai (Hirohito, 1988)
  » Species Hydractinia ingolfi Kramp, 1932
  » Species Hydractinia kaffraria Millard, 1955
  » Species Hydractinia laevispina Fraser, 1922
  » Species Hydractinia longispina Fraser, 1938
  » Species Hydractinia mar (Gasca & Calder, 1993)
  » Species Hydractinia marsupialia Millard, 1975
  » Species Hydractinia michaelseni Broch, 1914
  » Species Hydractinia minoi (Alcock, 1892)
  » Species Hydractinia moniliformis Huang, Zhong & Zhang, 2010
  » Species Hydractinia monocarpa Allman, 1876
  » Species Hydractinia monoon (Hirohito, 1988)
  » Species Hydractinia multispina Fraser, 1938
  » Species Hydractinia multitentaculata (Millard, 1975)
  » Species Hydractinia munita (Calder, 2010)
  » Species Hydractinia nagaoensis Bouillon, Medel & Peña Cantero, 1997
  » Species Hydractinia novaezelandiae Schuchert, 1996
  » Species Hydractinia ocellata (Agassiz & Mayer, 1902)
  » Species Hydractinia otagoensis (Schuchert, 1996)
  » Species Hydractinia pacifica Hartlaub, 1905
  » Species Hydractinia parvispina Hartlaub, 1905
  » Species Hydractinia paucispinata Vervoort, 2006
  » Species Hydractinia phialiformis (Antsulevich, 1983)
  » Species Hydractinia phyllosoma Huang & Xu, 2015
  » Species Hydractinia piscicola (Komai, 1932)
  » Species Hydractinia polycarpa Fraser, 1938
  » Species Hydractinia polyclina L. Agassiz, 1860
  » Species Hydractinia polytentaculata Xu & Huang, 2006
  » Species Hydractinia proboscidea (Hincks, 1868)
  » Species Hydractinia prolifica Fraser, 1948
  » Species Hydractinia promiscua Galea & Ferry, 2015
  » Species Hydractinia quadrigemina Fraser, 1938
  » Species Hydractinia recurvatus Lin, Xu, Huang & Wang, 2010
  » Species Hydractinia rugosa Fraser, 1938
  » Species Hydractinia sandrae (Wedler & Larson, 1986)
  » Species Hydractinia sarsii (Steenstrup, 1850)
  » Species Hydractinia spinipapillaris (Hirohito, 1988)
  » Species Hydractinia spiralis Goto, 1910
  » Species Hydractinia symbiolongicarpus Buss & Yund, 1989
  » Species Hydractinia symbiopollicaris Buss & Yund, 1989
  » Species Hydractinia taiwanensis Xu, Huang, Lin, Guo & Wang, 2014
  » Species Hydractinia thatcheri Chapman, 1931 †
  » Species Hydractinia uniformis Stampar, Tronolone & Morandini, 2006
  » Species Hydractinia valens Fraser, 1943
  » Species Hydractinia vallini Jäderholm, 1926
  » Species Hydractinia verdi Ritchie, 1907
  » Species Hydractinia yerii (Iwasa, 1934)
  » Species Hydractinia dubia (Mayer, 1900) (taxon inquirendum)
  » Species Hydractinia humilis Bonnevie, 1898 (taxon inquirendum)
  » Species Hydractinia incerta Van Beneden, 1867 (taxon inquirendum)
  » Species Hydractinia reticulata (Wright, 1861) (taxon inquirendum)
  » Species Hydractinia siphonis (Stechow, 1921) (taxon inquirendum)
  » Species Hydractinia solitaria Van Beneden, 1867 (taxon inquirendum)
  » Species Hydractinia tenuissima Van Beneden, 1867 (taxon inquirendum)
  » Species Hydractinia reticulata (Fraser, 1938) (temporary name, secondary homonym of Hydractina reticulata Wright, 1861)
  » Species Hydractinia alderi (Hodge, 1863) accepted as Podocoryna borealis (Mayer, 1900) (possible synonym, species inquirenda)
  » Species Hydractinia allmanii Bonnevie, 1898 accepted as Schuchertinia allmanii (Bonnevie, 1898) (basionym)
  » Species Hydractinia americana (Mayer, 1910) accepted as Podocoryna americana (Mayer, 1910) (genus transfer)
  » Species Hydractinia antonii Miglietta, 2006 accepted as Schuchertinia antonii (Miglietta, 2006) (basionym)
  » Species Hydractinia areolata Alder, 1862 accepted as Podocoryna areolata (Alder, 1862) (genus transfer)
  » Species Hydractinia australis (Schuchert, 1996) accepted as Podocoryna australis Schuchert, 1996
  » Species Hydractinia bella (Hand, 1961) accepted as Podocoryna bella Hand, 1961 (genus transfer)
  » Species Hydractinia borealis (Mayer, 1900) accepted as Podocoryna borealis (Mayer, 1900) (genus transfer)
  » Species Hydractinia calderi Bouillon, Medel & Peña Cantero, 1997 accepted as Hydractinia proboscidea (Hincks, 1868) (synonym)
  » Species Hydractinia carcinicola (Hiro, 1939) accepted as Bouillonactinia carcinicola (Hiro, 1939) (genus transfer)
  » Species Hydractinia carnea (M. Sars, 1846) accepted as Podocoryna carnea M. Sars, 1846
  » Species Hydractinia clavata Jäderholm, 1905 accepted as Perarella clavata (Jäderholm, 1905) (basionym)
  » Species Hydractinia claviformis (Bouillon, 1965) accepted as Hydractinia proboscidea (Hincks, 1868) (synonym)
  » Species Hydractinia conchicola (Yamada, 1947) accepted as Schuchertinia conchicola (Yamada, 1947) (genus transfer)
  » Species Hydractinia dendritica Hickson & Gravely, 1907 accepted as Hydractinia angusta Hartlaub, 1904 (synonym)
  » Species Hydractinia epiconcha Stechow, 1908 accepted as Schuchertinia epiconcha (Stechow, 1908) (basionym)
  » Species Hydractinia exigua (Haeckel, 1880) accepted as Podocoryna exigua (Haeckel, 1879) (genus transfer)
  » Species Hydractinia fallax Broch, 1914 accepted as Perarella fallax (Broch, 1914) (basionym)
  » Species Hydractinia fucicola (Sars, 1857) accepted as Stylactis fucicola (M. Sars, 1857)
  » Species Hydractinia fuciola accepted as Hydractinia fucicola (Sars, 1857) (spelling error)
  » Species Hydractinia grisea Leuckart, 1847 accepted as Hydractinia echinata (Fleming, 1828)
  » Species Hydractinia hayamaensis (Hirohito, 1988) accepted as Podocoryna hayamaensis Hirohito, 1988 (basionym)
  » Species Hydractinia hooperii (Sigerfoos, 1899) accepted as Bouillonactinia hooperii (Sigerfoos, 1899) (genus transfer)
  » Species Hydractinia humilis (Hartlaub, 1905) accepted as Podocoryna humilis Hartlaub, 1905
  » Species Hydractinia inermis (Allman, 1872) accepted as Stylactis inermis Allman, 1872 (genus transfer)
  » Species Hydractinia lactea Van Beneden, 1844 accepted as Hydractinia echinata (Fleming, 1828)
  » Species Hydractinia meteoris (Thiel, 1938) accepted as Paracytaeis meteoris (Thiel, 1938)
  » Species Hydractinia milleri Torrey, 1902 accepted as Schuchertinia milleri (Torrey, 1902) (basionym)
  » Species Hydractinia minima (Trinci, 1903) accepted as Podocorynoides minima (Trinci, 1903)
  » Species Hydractinia minuta Bonnevie, 1898 accepted as Hydractinia carica Bergh, 1887 (synonym)
  » Species Hydractinia misakiensis (Iwasa, 1934) accepted as Bouillonactinia misakiensis (Iwasa, 1934) (genus transfer)
  » Species Hydractinia multigranosi (Namikawa, 1991) accepted as Bouillonactinia multigranosi (Namikawa, 1991) (genus transfer)
  » Species Hydractinia nassa (Millard, 1959) accepted as Cytaeis nassa (Millard, 1959) (genus transfer)
  » Species Hydractinia ocalana (Brooks, 1964) † accepted as Cystactinia ocalana Brooks, 1964 †
  » Species Hydractinia ornata Bonnevie, 1899 accepted as Schuchertinia allmanii (Bonnevie, 1898) (synonym)
  » Species Hydractinia pruvoti Motz-Kossowska, 1905 accepted as Podocoryna pruvoti (Motz-Kossowska, 1905)
  » Species Hydractinia reticulata (Hirohito, 1988) accepted as Schuchertinia reticulata (Hirohito, 1988) (secondary homonym of Hydractina reticulata Wright, 1861)
  » Species Hydractinia rosea Van Beneden, 1844 accepted as Hydractinia echinata (Fleming, 1828)
  » Species Hydractinia rubricata Schuchert, 1996 accepted as Clavactinia rubricata (Schuchert, 1996) (basionym)
  » Species Hydractinia selena (Mills, 1976) accepted as Hydractinia americana (Mayer, 1910) (synonym)
  » Species Hydractinia serrata Kramp, 1943 accepted as Clavactinia serrata (Kramp, 1943) (basionym)
  » Species Hydractinia sodalis Stimpson, 1859 accepted as Hydrissa sodalis (Stimpson, 1859) (basionym)
  » Species Hydractinia spiralis Lin, Xu, Huang & Wang, 2010 accepted as Hydractinia taiwanensis Xu, Huang, Lin, Guo & Wang, 2014 (Invalid name as homonym of Hydractinia spiralis Goto, 1910)
  » Species Hydractinia tenuis (Browne, 1902) accepted as Podocoryna tenuis (Browne, 1902)
  » Species Hydractinia tournieri (Picard & Rahm, 1954) accepted as Cnidostoma fallax Vanhöffen, 1911 (synonym)
  » Species Hydractinia uchidai Nagao, 1961 accepted as Hydractinia nagaoensis Bouillon, Medel & Peña Cantero, 1997
  » Species Hydractinia uchidai (Yamada, 1947) accepted as Schuchertinia uchidai (Yamada, 1947) (genus transfer)
  » Species Hydractinia vacuolata Xu & Huang, 2006 accepted as Turritopsis vacuolata (Xu & Huang, 2006) (wrong genus)
Genus Hydrissa Stechow, 1922
Genus Hydrocorella Stechow, 1921
Genus Janaria Stechow, 1921
Genus Parahydractinia Xu & Huang, 2006
Genus Podocoryna M. Sars, 1846
  » Species Podocoryna americana (Mayer, 1910)
  » Species Podocoryna areolata (Alder, 1862)
  » Species Podocoryna australis Schuchert, 1996
  » Species Podocoryna bella Hand, 1961
  » Species Podocoryna borealis (Mayer, 1900)
  » Species Podocoryna carnea M. Sars, 1846
  » Species Podocoryna exigua (Haeckel, 1879)
  » Species Podocoryna hayamaensis Hirohito, 1988
  » Species Podocoryna humilis Hartlaub, 1905
  » Species Podocoryna loyola Haddad, Bettim & Miglietta, 2014
  » Species Podocoryna martinicana Galea & Ferry, 2013
  » Species Podocoryna pruvoti (Motz-Kossowska, 1905)
  » Species Podocoryna tenuis (Browne, 1902)
  » Species Podocoryna polystyla (Haeckel, 1879) (taxon inquirendum)
  » Species Podocoryna albida M. Sars, 1846 accepted as Podocoryna carnea M. Sars, 1846 (synonym)
  » Species Podocoryna alderi Hodge, 1863 accepted as Bougainvillia muscus (Allman, 1863) (synonym)
  » Species Podocoryna apicata Kramp, 1959 accepted as Hydractinia apicata (Kramp, 1959) (spelling variant)
  » Species Podocoryna corii Stechow, 1929 accepted as Podocoryna borealis (Mayer, 1900) (synonym)
  » Species Podocoryna fucicola M. Sars, 1857 accepted as Stylactis fucicola (M. Sars, 1857) (basionym)
  » Species Podocoryna hartlaubi Neppi & Stiasny, 1911 accepted as Podocoryna areolata (Alder, 1862) (Synonym)
  » Species Podocoryna inermis (Allman, 1872) accepted as Stylactis inermis Allman, 1872 (genus transfer)
  » Species Podocoryna meteoris (Thiel, 1938) accepted as Paracytaeis meteoris (Thiel, 1938)
  » Species Podocoryna minima (Trinci, 1903) accepted as Podocorynoides minima (Trinci, 1903)
  » Species Podocoryna minuta (Mayer, 1900) accepted as Lizzia blondina Forbes, 1848 (synonym)
  » Species Podocoryna nassa Millard, 1959 accepted as Cytaeis nassa (Millard, 1959)
  » Species Podocoryna sarsii Steenstrup, 1850 accepted as Hydractinia sarsii (Steenstrup, 1850) (basionym)
Genus Schuchertinia Miglietta, McNally & Cunningham, 2010
Genus Stylactis Allman, 1864
  » Species Stylactis fucicola (M. Sars, 1857)
  » Species Stylactis inermis Allman, 1872
  » Species Stylactis affinis Jäderholm, 1904 accepted as Perarella affinis (Jäderholm, 1904) (basionym)
  » Species Stylactis arctica Jäderholm, 1902 accepted as Hydractinia arctica (Jäderholm, 1902) (basionym)
  » Species Stylactis arge Clarke, 1882 accepted as Hydractinia arge (Clarke, 1882) (basionym)
  » Species Stylactis betkensis Watson, 1978 accepted as Hydractinia betkensis (Watson, 1978) (basionym)
  » Species Stylactis carcinicola Hiro, 1939 accepted as Bouillonactinia carcinicola (Hiro, 1939) (basionym)
  » Species Stylactis claviformis Bouillon, 1965 accepted as Hydractinia claviformis (Bouillon, 1965) (basionym)
  » Species Stylactis conchicola Yamada, 1947 accepted as Schuchertinia conchicola (Yamada, 1947) (basionym)
  » Species Stylactis fuciola (Sars, 1857) accepted as Stylactis fucicola (M. Sars, 1857) (spelling error)
  » Species Stylactis halecii Hickson & Gravely, 1907 accepted as Rhysia halecii (Hickson & Gravely, 1907) (basionym)
  » Species Stylactis hooperii Sigerfoos, 1899 accepted as Bouillonactinia hooperii (Sigerfoos, 1899) (basionym)
  » Species Stylactis inabai Hirohito, 1988 accepted as Hydractinia inabai (Hirohito, 1988) (basionym)
  » Species Stylactis indica Stechow, 1920 accepted as Cytaeis indica (Stechow, 1920) (basionym)
  » Species Stylactis ingolfi Kramp, 1932 accepted as Hydractinia ingolfi Kramp, 1932 (basionym)
  » Species Stylactis minoi Alcock, 1892 accepted as Hydractinia minoi (Alcock, 1892) (basionym)
  » Species Stylactis misakiensis (Iwasa, 1934) accepted as Bouillonactinia misakiensis (Iwasa, 1934) (genus transfer)
  » Species Stylactis monoon Hirohito, 1988 accepted as Hydractinia monoon (Hirohito, 1988) (basionym)
  » Species Stylactis piscicola Komai, 1932 accepted as Hydractinia piscicola (Komai, 1932) (basionym)
  » Species Stylactis pruvoti (Motz-Kossowska, 1905) accepted as Hydractinia pruvoti Motz-Kossowska, 1905
  » Species Stylactis reticulata Hirohito, 1988 accepted as Schuchertinia reticulata (Hirohito, 1988) (basionym)
  » Species Stylactis sandrae Wedler & Larson, 1986 accepted as Hydractinia sandrae (Wedler & Larson, 1986)
  » Species Stylactis spinipapillaris Hirohito, 1988 accepted as Hydractinia spinipapillaris (Hirohito, 1988) (basionym)
  » Species Stylactis uchidai Yamada, 1947 accepted as Schuchertinia uchidai (Yamada, 1947) (basionym)
  » Species Stylactis vermicola Allman, 1888 accepted as Stylactella vermicola (Allman, 1888)

Genus Cystactinia Brooks, 1964 † (nomen dubium, publication not valid according to rules of ICZN)
  » Species Cystactinia ocalana Brooks, 1964 † (interim unpublished)

Genus Archaeoceania Picard & Rahm, 1954 accepted as Cnidostoma Vanhöffen, 1911 (synonym)
Genus Calycidion Fewkes, 1882 accepted as Podocoryna M. Sars, 1846 (synonym)
  » Species Calycidion formosum Fewkes, 1882 (taxon inquirendum)
Genus Cionistes Wright, 1861 accepted as Hydractinia Van Beneden, 1844 (synonym)
  » Species Cionistes reticulata Wright, 1861 (taxon inquirendum)
Genus Corynopsis Allman, 1864 accepted as Podocoryna M. Sars, 1846 (synonym)
  » Species Corynopsis alderi (Hodge, 1863) (taxon inquirendum)
Genus Cytaeandra Haeckel, 1879 accepted as Podocoryna M. Sars, 1846 (synonym)
Genus Dysmorphosa Philippi, 1842 accepted as Podocoryna M. Sars, 1846 (synonym)
Genus Echinochorium Hassall, 1841 accepted as Hydractinia Van Beneden, 1844
Genus Euhydractinia Broch, 1910 accepted as Hydractinia Van Beneden, 1844
Genus Halorhiza Stechow, 1962 accepted as Hydractinia Van Beneden, 1844
Genus Hydractomma Stechow, 1921 accepted as Podocoryna M. Sars, 1846 (synonym)
Genus Hydroconophora Gregory, 1931 accepted as Hydrocorella Stechow, 1921 (synonym)
Genus Hydrodendrium Nutting, 1906 accepted as Hydractinia Van Beneden, 1844 (synonym)
Genus Hydronema Stechow, 1921 accepted as Hydractinia Van Beneden, 1844 (name preoccupied by Hydronema Martynow, 1914 (Trichoplera))
Genus Nuttingia Stechow, 1909 accepted as Hydractinia Van Beneden, 1844 (invalid replacement name for Hydrodendrium Nutting, 1905)
  » Species Nuttingia gorgonoides (Nutting, 1906) accepted as Hydractinia gorgonoides (Nutting, 1906) (unaccepted combination)
Genus Podocorella Stechow, 1921 accepted as Hydractinia Van Beneden, 1844
Genus Podocoryne Luetken, 1850 accepted as Podocoryna M. Sars, 1846 (spelling error)
  » Species Podocoryne Haeckelii Hamman, 1882 accepted as Hydractinia fucicola (Sars, 1857) (taxon inquirendum)
  » Species Podocoryne alderi Hodge, 1863 accepted as Podocoryna borealis (Mayer, 1900) (possible synonym, species inquirenda)
  » Species Podocoryne americana Mayer, 1900 accepted as Podocoryna americana (Mayer, 1910) (basionym)
  » Species Podocoryne anechinata Ritchie, 1907 accepted as Hydractinia anechinata (Ritchie, 1907) (basionym)
  » Species Podocoryne apicata Kramp, 1959 accepted as Hydractinia apicata (Kramp, 1959) (basionym)
  » Species Podocoryne areolata (Alder, 1862) accepted as Podocoryna areolata (Alder, 1862) (spelling mistake)
  » Species Podocoryne bella Hand, 1961 accepted as Podocoryna bella Hand, 1961 (basionym)
  » Species Podocoryne borealis (Mayer, 1900) accepted as Podocoryna borealis (Mayer, 1900) (spelling mistake)
  » Species Podocoryne carnea M. Sars, 1846 accepted as Hydractinia carnea (M. Sars, 1846) (spelling variant)
  » Species Podocoryne denhami Thornely, 1904 accepted as Hydractinia denhami (Thornely, 1904) (gensu transfer)
  » Species Podocoryne dubia accepted as Hydractinia dubia (Mayer, 1900) (synonym)
  » Species Podocoryne fulgurans ( A. Agassiz, 1865) accepted as Lizzia blondina Forbes, 1848 (synonym)
  » Species Podocoryne hayamaensis Hirohito, 1988 accepted as Hydractinia hayamaensis (Hirohito, 1988) (basionym)
  » Species Podocoryne inermis Allman, 1876 accepted as Hydractinia carnea (M. Sars, 1846) (synonym)
  » Species Podocoryne meteoris Thiel, 1938 accepted as Paracytaeis meteoris (Thiel, 1938) (basionym)
  » Species Podocoryne minima (Trinci, 1903) accepted as Podocorynoides minima (Trinci, 1903)
  » Species Podocoryne minoi (Alcock, 1892) accepted as Hydractinia minoi (Alcock, 1892) (synonym)
  » Species Podocoryne nassa Millard, 1959 accepted as Cytaeis nassa (Millard, 1959)
  » Species Podocoryne ocellata (Agassiz & Mayer, 1902) accepted as Hydractinia ocellata (Agassiz & Mayer, 1902) (synonym)
  » Species Podocoryne proboscidea Hincks, 1869 accepted as Hydractinia proboscidea (Hincks, 1868) (basionym)
  » Species Podocoryne reticulata Fraser, 1938 accepted as Hydractinia reticulata (Fraser, 1938) (basionym)
  » Species Podocoryne selena Mills, 1976 accepted as Hydractinia selena (Mills, 1976) (synonym)
  » Species Podocoryne simplex Kramp, 1928 accepted as Podocorynoides minima (Trinci, 1903) (synonym)
Genus Polyhydra Stechow, 1962 accepted as Hydrocorella Stechow, 1921 (synonym)
Genus Rhizocline Allman, 1864 accepted as Podocoryna M. Sars, 1846 (synonym)
Genus Stylactaria Stechow, 1921 accepted as Stylactis Allman, 1864
  » Species Stylactaria arctica (Jäderholm, 1902) accepted as Hydractinia arctica (Jäderholm, 1902) (synonym)
  » Species Stylactaria arge (Clarke, 1882) accepted as Hydractinia arge (Clarke, 1882)
  » Species Stylactaria betkensis (Watson, 1978) accepted as Hydractinia betkensis (Watson, 1978) (synonym)
  » Species Stylactaria brachyurae (Hirohito, 1988) accepted as Hydractinia brachyurae (Hirohito, 1988) (synonym)
  » Species Stylactaria fucicola (M. Sars, 1857) accepted as Stylactis fucicola (M. Sars, 1857)
  » Species Stylactaria inermis (Allman, 1872) accepted as Stylactis inermis Allman, 1872
  » Species Stylactaria mar Gasca & Calder, 1993 accepted as Hydractinia mar (Gasca & Calder, 1993) (basionym)
  » Species Stylactaria misakinensis (Iwasa, 1934) accepted as Bouillonactinia misakiensis (Iwasa, 1934) (genus transfer)
  » Species Stylactaria multigranosi Namikawa, 1991 accepted as Bouillonactinia multigranosi (Namikawa, 1991) (basionym)
  » Species Stylactaria munita Calder, 2010 accepted as Hydractinia munita (Calder, 2010) (basionym)
  » Species Stylactaria otagoensis Schuchert, 1996 accepted as Hydractinia otagoensis (Schuchert, 1996) (basionym)
  » Species Stylactaria piscicola (Komai, 1932) accepted as Hydractinia piscicola (Komai, 1932)
Genus Synhydra Quatrefages, 1843 accepted as Hydractinia Van Beneden, 1844
marine, fresh, terrestrial
recent + fossil
Taxonomy Several genera of the Hydractiniidae have been redefined by Miglietta et al (2010, 2012) based on molecular phylogenies....  
Taxonomy Several genera of the Hydractiniidae have been redefined by Miglietta et al (2010, 2012) based on molecular phylogenies. Many of these genera are now not diagnosable by morphological traits. Moreover, not all species were included in the phylogeny and thus for some Hydractinia species it is unclear to which genus they belong. If it is unclear to what genus a hydractiniid species belongs, then Hydractinia should be selected as default. More revisory work is clearly needed to obtain a stable system [details]
Schuchert, P. (2018). World Hydrozoa Database. Hydractiniidae L. Agassiz, 1862. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1601 on 2018-02-19
Date
action
by
2004-12-21 15:54:05Z
created
db_admin
2009-04-28 12:00:23Z
changed
2010-04-26 11:37:38Z
changed
2016-07-07 13:28:03Z
changed

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


basis of record Bouillon, J.; Boero, F. (2000). Synopsis of the families and genera of the Hydromedusae of the world, with a list of the worldwide species. Thalassia Salent. 24: 47-296 (look up in IMIS[details]   

redescription Schuchert, P. (2008). The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Filifera part 3. Revue suisse de Zoologie. 115: 221-302., available online at http://www.biodiversitylibrary.org/item/128347#page/5/mode/1up
page(s): 223 [details]  OpenAccess publication 

basis of record  (ofClavidae McCrady, 1859) Bouillon, J.; Boero, F. (2000). Synopsis of the families and genera of the Hydromedusae of the world, with a list of the worldwide species. Thalassia Salent. 24: 47-296 (look up in IMIS[details]   

status source  (ofClavidae McCrady, 1859) Schuchert, P. (2001). Hydroids of Greenland and Iceland (Cnidaria, Hydrozoa). Meddelelser om Grønland. Bioscience. 53: 1-184. [details]  Available for editors  PDF available [request] 

status source  (ofClavidae McCrady, 1859) Schuchert, P. (2008). The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Filifera part 3. Revue suisse de Zoologie. 115: 221-302., available online at http://www.biodiversitylibrary.org/item/128347#page/5/mode/1up [details]  OpenAccess publication 
From editor or global species database
Diagnosis Hydroids sessile, hydranths often polymorphic, usually epizootic; hydrorhiza either perisarc-covered stolonal tubes, or as an encrusting mat resulting from the coalescence of the stolonal system, either covered by a common layer of perisarc or with naked coenosarc; in some genera the hydrorhizal mat is reinforced by a calcareous skeleton; frequently with chitinous or calcareous spines forming sometimes pillars and branches, sometimes with protective tubes overarching the hydranths; gastrozooids either with one or several whorls of filiform tentacles beneath hypostome, or with scattered tentacles on the upper half of the body, exceptionally with one or two tentacles only; dactylozooids, when present, with no tentacles. Gonophores typically borne on gonozooids, these with one or more whorls of filiform tentacles or without tentacles and mouth (= blastostyles), giving rise to fixed sporosacs, eumedusoids, or free medusae.
Medusa umbrella more or less bell-shaped, with or without slight apical process; manubrium tubular to sac-shaped, not extending beyond bell margin; with or without gastric peduncle; mouth with four simple or branched oral lips drawn out to form arms with terminal nematocyst clusters; four, eight, or more, solid, marginal tentacles, tentacles not in groups; four radial canals and circular canal; gonads on manubrium, interradial, sometimes extending along basal, perradial protrusions of the manubrium; with or without ocelli. [details]

Taxonomy Several genera of the Hydractiniidae have been redefined by Miglietta et al (2010, 2012) based on molecular phylogenies. Many of these genera are now not diagnosable by morphological traits. Moreover, not all species were included in the phylogeny and thus for some Hydractinia species it is unclear to which genus they belong. If it is unclear to what genus a hydractiniid species belongs, then Hydractinia should be selected as default. More revisory work is clearly needed to obtain a stable system [details]
 



LanguageName 
Japanese クラバ [from synonym]ウミヒドラ  [details]