WoRMS taxon details

Checked: verified by a taxonomic editorScaeurgus Troschel, 1857

138270

urn:lsid:marinespecies.org:taxname:138270

accepted
Genus
marine
Troschel F. H. (1857). Bemerkungen über die Cephalopoden von Messina. Archiv für Naturgeschichte, Berlin 23: 41-76 [details]   
Checked: verified by a taxonomic editorNote Confusion exists over the type species of...  
Checked: verified by a taxonomic editorType species Confusion exists over the type species of Scaeurgus, its resolution having significant taxonomic implications. In his list of cephalopod generic names, Hoyle (1910) used page priority (‘sp. first named’) to designate S. titanotus (= Pteroctopus tetracirrhus) as the type species of Scaeurgus. Under the International Code of Zoological Nomenclature (ICZN, 1999: art. 24.2.1), Hoyle’s type determination is valid. As a result, tetracirrhus Chiaie, 1830 (the type species of the genus Pteroctopus) becomes also the type species for the older generic name, Scaeurgus.
There are three implications: (1) the genus Pteroctopus should be placed in the synonymy of the genus Scaeurgus,
(2) tetracirrhus should be treated as a species of Scaeurgus, and
(3) a new genus should be coined for unicirrhus, patagiatus and the new taxa reported in Norman et al. (2005).
Robson (1929) was aware of this name priority issue but chose to disregard it: ‘As I think it is quite clear that Troschel's titanotus is delle Chiaje's [sic] tetracirrhus, and as it is proposed to maintain Fischer's genus [Pteroctopus], it follows that unicirrhus must be regarded as the genotype of Scaeurgus’ (p. 191–192). Robson and subsequent authors followed this convention through to the present day. Due to the long usage of the two names Pteroctopus and Scaeurgus and their component species, particularly in the Mediterranean Sea, Norman et al. (2005) believe that disruption of these generic names will only cause unnecessary confusion, and propose to maintain the historical conventions since Robson (1929) that unicirrhus remain the type species for Scaeurgus. As a result, tetracirrhus would be retained as the type species for the distinct genus Pteroctopus. A submission to ICZN supporting this proposal is pending.
 [details]
Checked: verified by a taxonomic editorType species Confusion exists over the type species of...  
Checked: verified by a taxonomic editorType species Confusion exists over the type species of Scaeurgus, its resolution having significant taxonomic implications. In his list of cephalopod generic names, Hoyle (1910) used page priority (‘sp. first named’) to designate S. titanotus (= Pteroctopus tetracirrhus) as the type species of Scaeurgus. Under the International Code of Zoological Nomenclature (ICZN, 1999: art. 24.2.1), Hoyle’s type determination is valid. As a result, tetracirrhus Chiaie, 1830 (the type species of the genus Pteroctopus) becomes also the type species for the older generic name, Scaeurgus.
There are three implications: (1) the genus Pteroctopus should be placed in the synonymy of the genus Scaeurgus,
(2) tetracirrhus should be treated as a species of Scaeurgus, and
(3) a new genus should be coined for unicirrhus, patagiatus and the new taxa reported in Norman et al. (2005).
Robson (1929) was aware of this name priority issue but chose to disregard it: ‘As I think it is quite clear that Troschel's titanotus is delle Chiaje's [sic] tetracirrhus, and as it is proposed to maintain Fischer's genus [Pteroctopus], it follows that unicirrhus must be regarded as the genotype of Scaeurgus’ (p. 191–192). Robson and subsequent authors followed this convention through to the present day. Due to the long usage of the two names Pteroctopus and Scaeurgus and their component species, particularly in the Mediterranean Sea, Norman et al. (2005) believe that disruption of these generic names will only cause unnecessary confusion, and propose to maintain the historical conventions since Robson (1929) that unicirrhus remain the type species for Scaeurgus. As a result, tetracirrhus would be retained as the type species for the distinct genus Pteroctopus. A submission to ICZN supporting this proposal is pending.
 [details]
Bouchet, P.; Gofas, S. (2010). Scaeurgus. In: MolluscaBase (2017). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138270 on 2017-11-20

Date
action
by
2004-12-21 15:54:05Z
created
2010-10-17 13:28:46Z
changed

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



original description Troschel F. H. (1857). Bemerkungen über die Cephalopoden von Messina. Archiv für Naturgeschichte, Berlin 23: 41-76 [details]   

basis of record Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Patrimoines Naturels. 50: 180-213. (look up in IMIS[details]   

additional source Norman M.D., Hochberg F.G. & Boucher-Rodoni R. 2005. A revision of the deep-water octopus genus Scaeurgus (Cephalopoda: Octopodidae) with description of three new species from the southwest Pacific Ocean. Journal of Molluscan Studies, 71(4): 319-337, available online at http://mollus.oxfordjournals.org/content/71/4/319.full.pdf [details]   

additional source Norman M.D., Finn J.K. & Hochberg F.G. (2014). Family Octopodidae. pp. 36-215, in P. Jereb, C.F.E. Roper, M.D. Norman & J.K. Finn eds. Cephalopods of the world. An annotated and illustrated catalogue of cephalopod species known to date. Volume 3. Octopods and Vampire Squids. FAO Species Catalogue for Fishery Purposes [Rome, FAO]. 4(3): 353 pp. 11 pls. [details]   
From editor or global species database
Checked: verified by a taxonomic editorType species Confusion exists over the type species of Scaeurgus, its resolution having significant taxonomic implications. In his list of cephalopod generic names, Hoyle (1910) used page priority (‘sp. first named’) to designate S. titanotus (= Pteroctopus tetracirrhus) as the type species of Scaeurgus. Under the International Code of Zoological Nomenclature (ICZN, 1999: art. 24.2.1), Hoyle’s type determination is valid. As a result, tetracirrhus Chiaie, 1830 (the type species of the genus Pteroctopus) becomes also the type species for the older generic name, Scaeurgus.
There are three implications: (1) the genus Pteroctopus should be placed in the synonymy of the genus Scaeurgus,
(2) tetracirrhus should be treated as a species of Scaeurgus, and
(3) a new genus should be coined for unicirrhus, patagiatus and the new taxa reported in Norman et al. (2005).
Robson (1929) was aware of this name priority issue but chose to disregard it: ‘As I think it is quite clear that Troschel's titanotus is delle Chiaje's [sic] tetracirrhus, and as it is proposed to maintain Fischer's genus [Pteroctopus], it follows that unicirrhus must be regarded as the genotype of Scaeurgus’ (p. 191–192). Robson and subsequent authors followed this convention through to the present day. Due to the long usage of the two names Pteroctopus and Scaeurgus and their component species, particularly in the Mediterranean Sea, Norman et al. (2005) believe that disruption of these generic names will only cause unnecessary confusion, and propose to maintain the historical conventions since Robson (1929) that unicirrhus remain the type species for Scaeurgus. As a result, tetracirrhus would be retained as the type species for the distinct genus Pteroctopus. A submission to ICZN supporting this proposal is pending.
 [details]