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Polychaeta name details

Nicomedes difficilis Kinberg, 1865

329813  (urn:lsid:marinespecies.org:taxname:329813)

nomen dubium (indeterminable)
Species
marine, brackish, fresh, terrestrial
recent only
Kinberg, J.G.H. (1865). Annulata nova. [Continuatio.]. <em>Öfversigt af Königlich Vetenskapsakademiens förhandlingar, Stockholm.</em> 22(2): 167-179., available online at https://biodiversitylibrary.org/page/32339443
page(s): 179 [details]   
Holotype  NHRS 572, geounit Brazil  
Holotype NHRS 572, geounit Brazil [details]
Note Atlantic Ocean, near Rio de Janeiro, Brazil...  
From editor or global species database
Type locality Atlantic Ocean, near Rio de Janeiro, Brazil (gazetteer estimate -23.05°, -43.03°). [details]
Type material Holotype deposited in the Swedish Museum of Natural History, Stockholm, Sweden. [details]
Depth range 55-73 m.  
Depth range 55-73 m. [details]

Distribution Atlantic Ocean: near Rio de Janeiro (Brazil).  
Distribution Atlantic Ocean: near Rio de Janeiro (Brazil). [details]

Etymology Not stated by the author. The specific epithet difficilis is a Latin adjective meaning 'difficult' or 'troublesome', and...  
Etymology Not stated by the author. The specific epithet difficilis is a Latin adjective meaning 'difficult' or 'troublesome', and could refer to the presumed difficulty felt by the author in order to assign the type specimen to an already known genus, hence the erection of a new one to contain it. [details]

Status From Hartman (1948: 57): "The single specimen is poorly preserved. The anterior end and proboscis are missing. Setae are...  
Status From Hartman (1948: 57): "The single specimen is poorly preserved. The anterior end and proboscis are missing. Setae are those of an epitokous, or pelagic individual. Dorsal cirri are lost and the orientation of parapodial parts cannot be discerned. In view of these uncertainties, it seems desirable to regard both genus and species as indeterminable." Later, Pettibone (1971: 49) added: "The holotype consists of the posterior end of a heteronereid. As indicated earlier by Hartman (1949:57), both the genus and species must be considered indeterminable because of the brevity of the original description, absence of figures, and the poor condition of the holotype."
 [details]
Read, G.; Fauchald, K. (Ed.) (2018). World Polychaeta database. Nicomedes difficilis Kinberg, 1865. Accessed at: http://www.marinespecies.org/polychaeta/aphia.php?p=taxdetails&id=329813 on 2019-12-08
Date
action
by
2008-03-17 10:44:16Z
created
2008-03-26 11:36:43Z
changed
2011-08-28 22:29:41Z
changed
2019-03-26 23:28:45Z
changed

original description Kinberg, J.G.H. (1865). Annulata nova. [Continuatio.]. <em>Öfversigt af Königlich Vetenskapsakademiens förhandlingar, Stockholm.</em> 22(2): 167-179., available online at https://biodiversitylibrary.org/page/32339443
page(s): 179 [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): 273 [details]  Available for editors  PDF available [request] 

additional source Pettibone, Marian H. (1971). Revision of some species referred to <i>Leptonereis</i>, <i>Nicon</i>, and <i>Laeonereis</i> (Polychaeta: Nereididae). <em>Smithsonian Contributions to Zoology.</em> 104: 1-53., available online at http://si-pddr.si.edu/dspace/handle/10088/5689
page(s): 49 [details]  Available for editors  PDF available [request] 

status source Hartman, Olga. (1948). The marine annelids erected by Kinberg. With some notes on some other types in the Swedish State Museum. <em>Arkiv för Zoologi.</em> 42(1): 1-137, & plates 1-18.
page(s): 57; note: considered to be indeterminable [details]   
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
 

Holotype NHRS 572, geounit Brazil [details]
From editor or global species database
Depth range 55-73 m. [details]

Diagnosis Original diagnosis by Kinberg (1865: 179): "Lobus cephalicus ovalis, segmento buccali longior; fronte latiuscula, margine posteriore integro; oculi magni; antennae distantes, dimidia longitudine lobi cephalici longiores palposque superantes; cirri tentaculares elongati, paris 3:ii segmentum 10 attingunt; dentes maxillarum 10; mutationes pedum 4/5, 7/8 et 14/15.[details]

Distribution Atlantic Ocean: near Rio de Janeiro (Brazil). [details]

Etymology Not stated by the author. The specific epithet difficilis is a Latin adjective meaning 'difficult' or 'troublesome', and could refer to the presumed difficulty felt by the author in order to assign the type specimen to an already known genus, hence the erection of a new one to contain it. [details]

Habitat Type of sediment not stated, at shallow shelf depths. [details]

Status From Hartman (1948: 57): "The single specimen is poorly preserved. The anterior end and proboscis are missing. Setae are those of an epitokous, or pelagic individual. Dorsal cirri are lost and the orientation of parapodial parts cannot be discerned. In view of these uncertainties, it seems desirable to regard both genus and species as indeterminable." Later, Pettibone (1971: 49) added: "The holotype consists of the posterior end of a heteronereid. As indicated earlier by Hartman (1949:57), both the genus and species must be considered indeterminable because of the brevity of the original description, absence of figures, and the poor condition of the holotype."
 [details]

Type locality Atlantic Ocean, near Rio de Janeiro, Brazil (gazetteer estimate -23.05°, -43.03°). [details]

Type material Holotype deposited in the Swedish Museum of Natural History, Stockholm, Sweden. [details]