Hydrozoa taxon details
Hydractiniidae L. Aggasiz, 1862
AphiaID: 1601
AphiaID: 1601
| Classification: Biota > Animalia > Cnidaria > Hydrozoa > Hydroidolina > Anthoathecata > Filifera |
| Status | accepted | |||||||||||||
| Record status | Checked by Taxonomic Editor | |||||||||||||
| Rank | Family | |||||||||||||
| Typetaxon | Hydractinia van Beneden, 1841 | |||||||||||||
| Parent | Filifera | |||||||||||||
| Synonymised taxa |
Clavidae McCrady, 1859 (synonym) | |||||||||||||
| Sources |
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. 2008a. The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Filifera part 3. Revue suisse de Zoologie 115: 221-302. page(s): 223 [details] from synonym: Schuchert, P., 2001a. Hydroids of Greenland and Iceland (Cnidaria, Hydrozoa). Meddelelser om Grønland, Bioscience 53 : 1-184. [details] [view taxon] | |||||||||||||
| Direct child taxa [show all] | Genus Bouillonactinia Miglietta, McNally & Cunningham, 2010 Genus Clava Gmelin, 1788 Genus Clavactinia Thornely, 1904 Genus Cnidostoma Vanhöffen, 1911 Genus Fiordlandia Schuchert, 1996 Genus Hydractinia van Beneden, 1841 Genus Hydrissa Stechow, 1922 Genus Hydrocorella Stechow, 1921 Genus Janaria Stechow, 1921 Genus Parahydractinia Xu & Huang, 2006 Genus Podocoryna M. Sars, 1846 Genus Schuchertinia Miglietta, McNally & Cunningham, 2010 Genus Stylactaria Stechow, 1921 Genus Cystactinia Brooks, 1964 † (nomen dubium, publication not valid according to rules of ICZN) Genus Archaeoceania Picard & Rahm, 1954 accepted as Cnidostoma Vanhöffen, 1911 Genus Calycidion Fewkes, 1882 accepted as Podocoryna M. Sars, 1846 Genus Cionistes Wright, 1861 accepted as Hydractinia van Beneden, 1841 Genus Cytaeandra Haeckel, 1879 accepted as Podocoryna M. Sars, 1846 Genus Dysmorphosa Philippi, 1842 accepted as Podocoryna M. Sars, 1846 Genus Echinochorium Hassal, 1841 accepted as Hydractinia van Beneden, 1841 Genus Euhydractinia Broch, 1910 accepted as Hydractinia van Beneden, 1841 Genus Halorhiza Stechow, 1962 accepted as Hydractinia van Beneden, 1841 Genus Hydractomma Stechow, 1921 accepted as Podocoryna M. Sars, 1846 Genus Hydroconophora Gregory, 1931 accepted as Hydrocorella Stechow, 1921 Genus Hydrodendrium Nutting, 1905 accepted as Hydractinia van Beneden, 1841 Genus Hydronema Stechow, 1921c accepted as Hydractinia van Beneden, 1841 Genus Nuttingia Stechow, 1909 accepted as Hydractinia van Beneden, 1841 Genus Podocorella Stechow, 1921 accepted as Hydractinia van Beneden, 1841 Genus Podocoryne Luetken, 1850 accepted as Podocoryna M. Sars, 1846 Genus Polyhydra Stechow, 1962 accepted as Hydrocorella Stechow, 1921 Genus Rhizocline Allman, 1864c accepted as Podocoryna M. Sars, 1846 Genus Stylactis Allman, 1864 accepted as Stylactaria Stechow, 1921 Genus Synhydra Quatrefages, 1843 accepted as Hydractinia van Beneden, 1841 | |||||||||||||
| Environment | marine, | |||||||||||||
| Fossil range | recent + fossil | |||||||||||||
| Links | To GenBank To ITIS | |||||||||||||
| Notes |
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] Taxonomic Remark: 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 unlcear 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] | |||||||||||||
| Image |
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| LSID | urn:lsid:marinespecies.org:taxname:1601 | |||||||||||||
| Taxonomic Edit history |
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[Taxonomic tree] [List Species] [Google] [Google scholar] [Google images] | ||||||||||||||
| Citation: Schuchert, P. (2013). Hydractiniidae L. Aggasiz, 1862. In: Schuchert, P. (2013) World Hydrozoa database. Accessed through: Schuchert, P. (2013) World Hydrozoa database at http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=1601 on 2013-05-23 | ||||||||||||||
