Polychaeta name details

Placostegus ornatus (Sowerby & Sowerby, 1820-25)

334547  (urn:lsid:marinespecies.org:taxname:334547)

uncertain > taxon inquirendum (recombination of taxon inquirendum)
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  1. Subspecies Placostegus ornatus articulata Mörch, 1863 (uncertain > taxon inquirendum, indeterminable, tube & operculum only)
  2. Subspecies Placostegus ornatus pennata Mörch, 1863 (uncertain > taxon inquirendum)
marine, brackish, fresh, terrestrial
recent only
(of Serpula ornata Sowerby & Sowerby, 1820-25) Sowerby I, G. B. (1821-1834). <i>The genera of recent and fossil shells, for the use of students, in conchology and geology</i>. Published in 42 parts. Vol. 1, pls 1-126 [1821-1825]; vol. 2, pls 127-262 + text (unpaginated) [1825-1834]. London: G. B. Sowerby. , available online at https://www.biodiversitylibrary.org/page/45486673
page(s): plate 2 fig. 8 [details]   
Read, G.; Fauchald, K. (Ed.) (2024). World Polychaeta Database. Placostegus ornatus (Sowerby & Sowerby, 1820-25). Accessed at: https://marinespecies.org/polychaeta/aphia.php?p=taxdetails&id=334547 on 2024-09-18
Date
action
by
2008-03-17 10:44:16Z
created
2008-03-26 11:36:43Z
changed
2009-07-31 12:33:51Z
changed
2024-09-05 02:28:13Z
changed

original description  (of Serpula ornata Sowerby & Sowerby, 1820-25) Sowerby I, G. B. (1821-1834). <i>The genera of recent and fossil shells, for the use of students, in conchology and geology</i>. Published in 42 parts. Vol. 1, pls 1-126 [1821-1825]; vol. 2, pls 127-262 + text (unpaginated) [1825-1834]. London: G. B. Sowerby. , available online at https://www.biodiversitylibrary.org/page/45486673
page(s): plate 2 fig. 8 [details]   

additional source Hartman, Olga. (1959). Catalogue of the Polychaetous Annelids of the World. Parts 1 and 2. <em>Allan Hancock Foundation Occasional Paper.</em> 23: 1-628.
page(s): 585; note: checklist listing as Placostegus ornatus (Sowerby in Mörch, 1863). This is misleading as Mörch had simply recombined the existing Sowerby name in Placostegus. [details]  Available for editors  PDF available [request] 

additional source McIntosh, W.C. [as M'Intosh]. (1885). Report on the Annelida Polychaeta collected by H.M.S. Challenger during the years 1873-1876. <em>Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology.</em> 12 (part 34): i-xxxvi, 1-554, pl. 1-55, 1A-39A, & Annelida stations map., available online at https://biodiversitylibrary.org/page/50688426
page(s): 522-524, plate LV figs. 5-6, plate XXXA figs. 25-26; note: McIntosh reports a serpulid from 2900 fathoms as Placostegus ornatus (Sowerby). Later authors, notably Zibrowius 1973, point out this is an obvious misidentification. See the notes.  [details]  OpenAccess publication 

new combination reference Mörch, O. A. L. (1863). Revisio critica Serpulidarum. Et Bidrag til Rørormenes Naturhistorie. <em>Naturhistorisk Tidsskrift København.</em> Ser. 3, 1: 347-470, pl. 11 [also issued as a separate, 1–124, pl. 11]., available online at http://www.archive.org/details/naturhistoriskti01copeuoft
page(s): 420 [details]   
From editor or global species database
Editor's comment Plate 2 fig.8 of Sowerby & Sowerby's Serpula ornata depicts an attached tube with medial keel flanked by two rows of pits, rather reminiscent of Spirobranchus polytrema! The last comment of Mörch (p.420) freely translated is "It is not impossible that P. ornatus Sowb. will prove to be a subspecies of P. porosus when larger series become known. [details]

Identification  McIntosh reports a serpulid from 2900 fathoms as Placostegus ornatus (Sowerby). Later authors, notably Zibrowius 1973, point out this is an obvious misidentification. In WoRMS there was a record (aphia 410155) for a Placostegus ornatus McIntosh, 1885 but this is an error. McIntosh was reporting the Mörch combination in Placostegus. He was not creating a new name. If he had done that it would be a homonym, but he did not do that. Zibrowius (1973) named McIntosh's Challenger specimen as Bathyvermilia challengeri Zibrowius, 1973. On p.431 Zibrowius explains what happened: "Mclntosh (1885) erroneously referred his specimens from the “Challenger" stations to Placostegus ornatus (Sowerby MS) Morch, 1863, a littoral serpulid from the Philippine Islands and described from the tube only. The sculpturing of the tube of Mclntosh's deep-water species is characteristic and the tube fragments from the three “(Challenger" stations in the North and South Pacific (halfway between Hawaii and Japan, Hawaii and Alaska, and South of Touamotou archipelago) are similar. " However, Zibrowius is wrong to say Sowerby's name was a manuscript name. It was validly published as Serpula ornata, with a plate figure. It is regarded as indeterminable. [details]

Page citation In volume one of Sowerby there is a list of the Serpula and Serpula ornata is mentioned. In volume 2 is the plate on page 132 (numbering used by BHL), but it is not easy to find. The link is https://www.biodiversitylibrary.org/page/45474965 with figure 8 being Serpula ornata [details]