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Deep-Sea taxon details

Amphiascus Sars G.O., 1905

115305  (urn:lsid:marinespecies.org:taxname:115305)

accepted
Genus
marine, brackish, fresh, terrestrial
Sars, G.O. (1905). Pazifische Plankton-Crustaceen (Ergebnisse einer Reise nach dem Pazifik. Schauinsland 1896-1897). II. Brackwasser- Crustaceen von den Chatham-Inseln. <em>Zool. Jahrb. Syst.</em> 21 (4), 371-414. [details]  OpenAccess publication 
Taxonomy Willen, E. 2002 moved all genera of Diosaccidae into Miraciidae  
Taxonomy Willen, E. 2002 moved all genera of Diosaccidae into Miraciidae [details]

Taxonomy Sars (1905a: 380) proposed the genus Amphiascus Sars, 1905a to include Dactylopus longirostris Claus, 1863, D. minutus...  
Taxonomy Sars (1905a: 380) proposed the genus Amphiascus Sars, 1905a to include Dactylopus longirostris Claus, 1863, D. minutus Claus, 1863, D. debilis Giesbrecht, 1881 and a new species Amphiascus pacificus Sars, 1905a. Nicholls (1941b: 69) transferred D. minutus to Amphiascopsis Gurney, 1927 and D. debilis to Amphiascoides Nicholls, 1941b, and he designated D. longirostris as the type species of Amphiascus (on the ground of page precedence in Sars’s (1905a) publication). Lang (1944: 19), who was unaware of Nicholls’s (1941b) subsequent designation, unfortunately also fixed D. longirostris as type of Paramphiascopsis Lang, 1944. The latter therefore becomes a junior objective synonym of Amphiascus Sars, 1905 (ICZN Arts 61.3.3 and 67.11). Other workers have overlooked Nicholls’s type fixation and incorrectly treated D. minutus as the type species (e.g. Marinov & Apostolov 1988: 153). Accepting Nicholls’s (1941b) subsequent designation and Lang’s (1944, 1948) revision of Amphiascus would imply that only the species currently assigned to Paramphiascopsis should be included in Amphiascus. A new generic name is therefore required to receive all “orphaned” species that are currently included in Amphiascus sensu Lang (1944, 1948).
The only genus-group name that has been cited in the literature as a junior subjective synonym of, and potential substitute name for, Amphiascus sensu Lang (1944, 1948) is Mesamphiascus Nicholls, 1941b (Lang 1965: 253). This genus is probably one of the most unnatural ever established in the Miraciidae, to the extent that Nicholls (1941b: 79) himself admitted having difficulties in selecting a type species. His statement that “... perhaps parvus Sars (1906, p. 162, pl. ciii) is suitable, occupying a more or less central position in the genus, and having a fairly wide distribution” does not qualify for an explicit designation that is rigidly construed (ICZN Art. 67.5; see also Vervoort 1964: 191). Consequently, the genus-group name Mesamphiascus is unavailable and therefore cannot enter into the synonymy of Amphiascus. A new genus, Sarsamphiascus gen. nov., is proposed here to accommodate all species previously placed in Amphiascus by Lang (1948) and subsequent authors. Dactylopus minutus Claus, 1863 is formally fixed as the type species. The revised species compositions of Amphiascus and Sarsamphiascus gen. nov., including all new combinations, are given in Table 3. In order to satisfy the provisions of ICZN Art. 13.1 the new genus must be accompanied by (a) a description or definition that states in words characters that are purported to differentiate it, or (b) a bibliographic reference to such a published statement. Reference is made here to Lang’s (1948: 644) generic diagnosis of Amphiascus which is equivalent to the diagnosis of Sarsamphiascus gen. nov. [details]
Walter, T.C. & Boxshall, G. (2018). World of Copepods database. Amphiascus Sars G.O., 1905. Accessed through: Glover, A.G., Higgs, N., Horton, T. (2018) World Register of Deep-Sea species (WoRDSS) at: http://www.marinespecies.org/Deepsea/aphia.php?p=taxdetails&id=115305 on 2019-08-26
Glover, A.G.; Higgs, N.; Horton, T. (2019). World Register of Deep-Sea species (WoRDSS). Amphiascus Sars G.O., 1905. Accessed at: http://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=115305 on 2019-08-26
Date
action
by
2004-12-21 15:54:05Z
created
2008-06-24 07:15:47Z
changed
2009-09-28 15:05:21Z
changed
2009-09-29 23:32:08Z
changed
2011-02-01 11:11:26Z
changed
2011-09-28 21:02:14Z
changed
2015-02-23 08:14:28Z
changed

original description Sars, G.O. (1905). Pazifische Plankton-Crustaceen (Ergebnisse einer Reise nach dem Pazifik. Schauinsland 1896-1897). II. Brackwasser- Crustaceen von den Chatham-Inseln. <em>Zool. Jahrb. Syst.</em> 21 (4), 371-414. [details]  OpenAccess publication 

original description  (of Paramphiascopsis Lang, 1944) Lang, K. (1944). Monographie der Harpacticiden (Vorlaufige Mitteilung). Almqvist & Wiksells Boktryckeri Ab, Uppsala 39pp. (19-ii-1944). [details]  Available for editors  PDF available 

basis of record Huys, R. (2001). Copepoda - Harpacticoida. <em>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. Collection Patrimoines Naturels.</em> 50:268-280. (look up in IMIS[details]  Available for editors  PDF available 

additional source Webber, W.R.; Fenwick, G.D.; Bradford-Grieve, J.M.; Eagar S.G.; Buckeridge, J.S.; Poore, G.C.B.; Dawson, E.W.; Watling, L.; Jones, J.B.; Wells, J.B.J.; Bruce, N.L.; Ahyong, S.T.; Larsen, K.; Chapman, M.A.; Olesen, J.; Ho, J.; Green, J.D.; Shiel, R.J.; Rocha, C.E.F.; Lörz, A.; Bird, G.J.; Charleston, W.A. (2010). Phylum Arthropoda Subphylum Crustacea: shrimps, crabs, lobsters, barnacles, slaters, and kin. <em>in: Gordon, D.P. (Ed.) (2010). New Zealand inventory of biodiversity: 2. Kingdom Animalia: Chaetognatha, Ecdysozoa, Ichnofossils.</em> pp. 98-232. [details]   

additional source Huys, R. (2009). Unresolved cases of type fixation, synonymy and homonymy in harpacticoid copepod nomenclature (Crustacea: Copepoda). <em>Zootaxa.</em> 2183:1-99., available online at http://www.mapress.com/zootaxa/2009/2/zt02183p099.pdf [details]  Available for editors  PDF available 

additional source Bodin, P. (1997). Catalogue of the new marine harpacticoid copepods. <em>Studiedocumenten van het K.B.I.N. = Documents de Travail de l'I.R.Sc.N.B., 89. Koninklijk Belgisch Instituut voor Natuurwetenschappen: Brussels, Belgium.</em> 304 pp. (look up in IMIS)
page(s): 380 [details]   

additional source Sars, G.O. (1905). Pacifische Plankton-Crustaceen. (Ergebnisse einer Reise nach dem Pacific. Schauinsland 1896-1897). II. Brackwasser-Crustaceen von den Chatham-Inseln. Zoologische Jahrbucher, Abteilung fur Systematik 21(4):371-414, pls. 14-20. (10-ii-1905)
page(s): 380 [details]  OpenAccess publication 

additional source Walter, Chad. The world of Copepods. , available online at http://www.marinespecies.org/copepoda [details]   

source of synonymy Willen, E. (2002). Notes on the systematic position of the Stenheliinae (Copepoda, Harpacticoida) within the Thalestridimorpha and description of two new species from Motupore Island, Papua New Guinea. Cahiers de Biologie Marine 43(1): 27-42. [details]   
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
 

From editor or global species database
Taxonomy Willen, E. 2002 moved all genera of Diosaccidae into Miraciidae [details]

Taxonomy Sars (1905a: 380) proposed the genus Amphiascus Sars, 1905a to include Dactylopus longirostris Claus, 1863, D. minutus Claus, 1863, D. debilis Giesbrecht, 1881 and a new species Amphiascus pacificus Sars, 1905a. Nicholls (1941b: 69) transferred D. minutus to Amphiascopsis Gurney, 1927 and D. debilis to Amphiascoides Nicholls, 1941b, and he designated D. longirostris as the type species of Amphiascus (on the ground of page precedence in Sars’s (1905a) publication). Lang (1944: 19), who was unaware of Nicholls’s (1941b) subsequent designation, unfortunately also fixed D. longirostris as type of Paramphiascopsis Lang, 1944. The latter therefore becomes a junior objective synonym of Amphiascus Sars, 1905 (ICZN Arts 61.3.3 and 67.11). Other workers have overlooked Nicholls’s type fixation and incorrectly treated D. minutus as the type species (e.g. Marinov & Apostolov 1988: 153). Accepting Nicholls’s (1941b) subsequent designation and Lang’s (1944, 1948) revision of Amphiascus would imply that only the species currently assigned to Paramphiascopsis should be included in Amphiascus. A new generic name is therefore required to receive all “orphaned” species that are currently included in Amphiascus sensu Lang (1944, 1948).
The only genus-group name that has been cited in the literature as a junior subjective synonym of, and potential substitute name for, Amphiascus sensu Lang (1944, 1948) is Mesamphiascus Nicholls, 1941b (Lang 1965: 253). This genus is probably one of the most unnatural ever established in the Miraciidae, to the extent that Nicholls (1941b: 79) himself admitted having difficulties in selecting a type species. His statement that “... perhaps parvus Sars (1906, p. 162, pl. ciii) is suitable, occupying a more or less central position in the genus, and having a fairly wide distribution” does not qualify for an explicit designation that is rigidly construed (ICZN Art. 67.5; see also Vervoort 1964: 191). Consequently, the genus-group name Mesamphiascus is unavailable and therefore cannot enter into the synonymy of Amphiascus. A new genus, Sarsamphiascus gen. nov., is proposed here to accommodate all species previously placed in Amphiascus by Lang (1948) and subsequent authors. Dactylopus minutus Claus, 1863 is formally fixed as the type species. The revised species compositions of Amphiascus and Sarsamphiascus gen. nov., including all new combinations, are given in Table 3. In order to satisfy the provisions of ICZN Art. 13.1 the new genus must be accompanied by (a) a description or definition that states in words characters that are purported to differentiate it, or (b) a bibliographic reference to such a published statement. Reference is made here to Lang’s (1948: 644) generic diagnosis of Amphiascus which is equivalent to the diagnosis of Sarsamphiascus gen. nov. [details]
 



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