WoRMS taxon details

Placostegus Philippi, 1844

129571  (urn:lsid:marinespecies.org:taxname:129571)

accepted
Genus
Plagostegus Philippi, 1844· accepted, alternate representation
Subgenus Placostegus (Omphalopoma)
  » Species Placostegus (Omphalopoma) umbilicatus Mörch, 1863 accepted as Omphalopoma umbilicata Mörch, 1863 (superseded original combination)
Species Placostegus assimilis McIntosh, 1885
Species Placostegus californicus Hartman, 1969
Species Placostegus conchophilus Radwanska, 2004 †
Species Placostegus crystallinus (non Scacchi, 1836) sensu Zibrowius, 1968
Species Placostegus incomptus Ehlers, 1887
Species Placostegus laegerdorfensis Jager, 1983 †
Species Placostegus langerhansi Marenzeller, 1893
Species Placostegus proliferus (Goldfuss, 1831) †
Species Placostegus rigidus (Regenhardt, 1961) †
Species Placostegus tridentatus (Fabricius, 1779)
Species Placostegus zbyslavus (Ziegler, 1984) †
Species Placostegus zibrowii Sanfilippo, 2003 †

Species Placostegus benthalianus McIntosh, 1885 (taxon inquirendum)
Species Placostegus grayi Baird, 1865 (taxon inquirendum)
Species Placostegus moerchii McIntosh, 1885 (taxon inquirendum)
Species Placostegus ornatus (Sowerby & Sowerby, 1820-25) (taxon inquirendum)
Species Placostegus porosus (Daudin, 1800) (taxon inquirendum)
Species Placostegus violaceus (Quatrefages, 1866) (taxon inquirendum)

Species Placostegus annulatus (Schmarda, 1861) accepted as Vermiliopsis annulata (Schmarda, 1861) (superseded recombination)
Species Placostegus caeruleus Schmarda, 1861 accepted as Pomatoleios kraussii (Baird, 1865) accepted as Spirobranchus kraussii (Baird, 1865) (confused, subjective synonym of two other taxa)
Species Placostegus calciferus Treadwell, 1929 accepted as Pyrgopolon ctenactis (Mörch, 1863) (subjective synonym)
Species Placostegus cariniferus (Gray, 1843) accepted as Spirobranchus cariniferus (Gray, 1843) (superseded recombination)
Species Placostegus fimbriatus (Delle Chiaje, 1822) accepted as Janita fimbriata (Delle Chiaje, 1822) (superseded recombination)
Species Placostegus latiligulatus Baird, 1865 accepted as Pomatoleios kraussii (Baird, 1865) accepted as Spirobranchus kraussii (Baird, 1865)
Species Placostegus libera (Sars, 1835) accepted as Ditrupa arietina (O. F. Müller, 1776) (subjective synonym)
Species Placostegus lima (Grube, 1862) accepted as Spirobranchus lima (Grube, 1862) (superseded recombination)
Species Placostegus ornatus McIntosh, 1885 accepted as Bathyvermilia challengeri Zibrowius, 1973 (homonym)
Species Placostegus politus (Sars, 1851) accepted as Placostegus tridentatus (Fabricius, 1779) (subjective synonym)
Species Placostegus quinquecostatus (Daudin, 1800) accepted as Spirobranchus lima (Grube, 1862) (subjective synonym; nomen oblitum)
Species Placostegus serrulatus (Fleming, 1825) accepted as Placostegus tridentatus (Fabricius, 1779) (subjective synonym)
Species Placostegus taeniatus (Lamarck, 1818) accepted as Pomatoceros taeniatus (Lamarck, 1818) accepted as Spirobranchus taeniatus (Lamarck, 1818) (superseded recombination)
Species Placostegus tricuspidatus (Sowerby, 1825) accepted as Placostegus tridentatus (Fabricius, 1779) (subjective synonym)
marine, brackish, fresh, terrestrial
recent + fossil
Philippi, A. (1844). Einige Bemerkungen über die Gattung Serpula, nebst Aufzählung der von mir im Mittelmeer mit dem Thier beobachteten Arten. <em>Archiv für Naturgeschichte, Berlin.</em> 10(1): 186-198, plate 6., available online at http://biodiversitylibrary.org/page/13704089 [details]   
Read, G.; Fauchald, K. (Ed.) (2018). World Polychaeta database. Placostegus Philippi, 1844. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=129571 on 2018-12-12
Date
action
by
2004-12-21 15:54:05Z
created
2007-03-12 12:43:33Z
checked
2008-03-26 11:36:43Z
changed
2009-09-11 20:47:06Z
changed

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


original description Philippi, A. (1844). Einige Bemerkungen über die Gattung Serpula, nebst Aufzählung der von mir im Mittelmeer mit dem Thier beobachteten Arten. <em>Archiv für Naturgeschichte, Berlin.</em> 10(1): 186-198, plate 6., available online at http://biodiversitylibrary.org/page/13704089 [details]   

original description  (ofEoplacostegus Regenhardt, 1961 †) Regenhardt, H. (1961). Serpulidae (Polychaeta Sedentaria) aus der Kreide Mitteleuropas, ihre ökologische, taxionomische und stratigraphische Bewertung. <em>Mitteilungen aus dem Geologischen Staatsinstitut in Hamburg.</em> 30: 5-115, plates 1-9. [details]   

basis of record Bellan, G. (2001). Polychaeta, <i>in</i>: Costello, M.J. <i>et al.</i> (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. <em>Collection Patrimoines Naturels.</em> 50: 214-231. (look up in IMIS[details]   

additional source Fauchald, K. (1977). The polychaete worms, definitions and keys to the orders, families and genera. <em>Natural History Museum of Los Angeles County: Los Angeles, CA (USA), Science Series.</em> 28:1-188., available online at http://www.vliz.be/imisdocs/publications/123110.pdf [details]   

redescription Hove, Harry A. ten.; Kupriyanova, Elena K. (2009). Taxonomy of Serpulidae (Annelida, Polychaeta): The state of affairs. <em>Zootaxa.</em> 2036: 1-126., available online at http://www.mapress.com/j/zt/issue/view/2173
page(s): 74 [details]  OpenAccess publication 
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
From editor or global species database
Editor's comment Morch (1863: 413, 418) tried to bring some order in what he perceived to be the genus Placostegus, distinguishing two sections: sectio alpha, characterized by a crystalline tube and "horny" operculum; sectio beta, characterized by a "cretaceous" tube and calcareous operculum. He, however, was not consistent in the application of these characters, so his division makes no sense in the present state of knowledge. Only one species, tridentatus, mentioned by Morch remains in the genus Placostegus, with what generally is regarded to be its synonym tricuspidatus, however, regarded by Mörch as a Mediterranean species as opposed to the Atlantic tridentatus; all other taxa have been referred to a variety of genera, Pomatoleios, Pomatoceros, Spirobranchus, but also Galeolaria, Bathyvermilia, Janita, Vermiliopsis and even maybe Hydroides. Nevertheless, the genus including subsequently described or resurrected species is badly in need of revision. [details]