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Blake, James A. (2021). New species and records of Orbiniidae (Annelida, Polychaeta) from continental shelf and slope depths of the Western North Atlantic Ocean. Zootaxa. 4930(1): 1-123.
10.11646/zootaxa.4930.1.1 [view] [view]
Blake, James A.
New species and records of Orbiniidae (Annelida, Polychaeta) from continental shelf and slope depths of the Western North Atlantic Ocean
4930(1): 1-123
World Polychaeta Database (WPolyDb). Includes a list of 58 deep-water Orbiniidae from recent publications (Blake 2000, 2017, 2020, 2021,
Available for editors  PDF available
Twenty-four species of Orbiniidae, 12 new to science, are reported from continental shelf and slope (deep-sea) habitats of the western North Atlantic. The majority of new material was collected during reconnaissance and monitoring surveys along the entire U.S. Atlantic coast from New England to the Carolinas that were intended to understand the potential impacts of oil and gas exploration in poorly known offshore environments. Additional materials from shallow water and shelf habitats off New England and New York as part of other projects are also included. New collections of Califia schmitti (Pettibone, 1957), Leitoscoloplos acutus (Verrill, 1873), L. fragilis (Verrill, 1873), L. obovatus Mackie, 1987, L. robustus (Verrill, 1873), Scoloplos intermedius (Hartman, 1965), Orbinia swani (Pettibone, 1957), Phylo felix (Kinberg, 1866), P. norvegicus (Sars, 1872), P. ornatus (Verrill, 1873), and Questa trifurcata (Hobson, 1970) provide additional morphological details, variability, and extended geographic and bathymetric distributions of previously known species. New species include Leitoscoloplos pustulus n. sp., Scoloplos papillatus n. sp., S. pettiboneae n. sp., S. pseudoarmiger n. sp., S. verrilli n. sp., Leodamas cuneatus n. sp., L. mucronatus n. sp., L. notoaciculatus n. sp., Phylo paraornatus n. sp., Orbiniella acsara n. sp., O. armata n. sp., and O. mimica n. sp. Juveniles of some species of Leitoscoloplos and Scoloplos were found to resemble known species of the meiofaunal orbiniid genus Schroederella Laubier, 1962. As such, S. berkeleyi Laubier, 1971 is referred to synonymy with Leitoscoloplos acutus. More importantly, the genus Schroederella was found to be pre-occupied by Schroederella Enderlein, 1921 in the Insecta, Diptera, family Helomyzidae. Gesaschroederella nomen nov. is therefore proposed as a replacement name for the polychaete homonym.
America, North
Boreal western Atlantic
Systematics, Taxonomy
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2021-02-17 09:04:58Z
2022-06-07 22:00:47Z

Questa trifurcata (Hobson, 1970) (taxonomy source)
Questinae Hartman, 1966 (status source)

Erected for Questa Hartman, 1966, which is a genus of superficially oligochaete-like polychaetes with diagnostic ... [details]


Orbiniinae, formerly Protoarciinae, with strongly pointed prostomium and branchiae present on the abdomen. ... [details]


After Blake (2021). Subfamily and genus diagnosis. Body elongate, threadlike, up to 10 mm long with 45–65 ... [details]


author: Phylo paraornatus epithet is from para, Greek for near and ornatus, Latin for adorned, to indicate the ... [details]


Schroederella Laubier, 1962 is unavailable as a replaced (by Gesaschroederella Blake 2021) junior homonym to ... [details]


Mandatory gender agreement requires a spelling of the adjectival compound word as 'paraornata' rather than ... [details]


Blake (2021: 116, 117) twice misspells S. pauliani as 'paulini', but also spells the name correctly elsewhere on ... [details]


Blake (2021: 116) suggested Gesachroederella (formerly Schroederella) were juveniles orbiniids of other taxa, and ... [details]


Unavailable as a junior homonym to Schroederella Enderlein, 1921 in Diptera. Subsequently Schroederella has been ... [details]

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