WoRMS taxon details

Nicomache (Loxochona) Arwidsson, 1906

325629  (urn:lsid:marinespecies.org:taxname:325629)

accepted
Subgenus
marine, brackish, fresh, terrestrial
recent only
Arwidsson, Ivar. (1906). Studien über die skandinavischen und arktischen Maldaniden nebst Zusammenstellung der übrigen bisher bekannten Arten dieser Familie. <em>Inaugural-Dissertation zur erlangung der Doktorwürde. Der Mathematisch-Naturwissenschaftlichen Sektion der Philosophischen Fakultät zu Upsala, Upsala Universitet, Upsala [sic].</em> 1-308. Plates 1-12. [published 1906 or at latest 2 Feb 1907]., available online at http://www.biodiversitylibrary.org/bibliography/39358
page(s): 104 [details]  OpenAccess publication 
Taxonomy Arwidsson (1906:104) separated his subgenus Loxochona from the nominal genus because of the slightly oblique (versus...  
Taxonomy Arwidsson (1906:104) separated his subgenus Loxochona from the nominal genus because of the slightly oblique (versus straight) truncation of the anal funnel plus lack of nephridia on chaetiger 6 in 2 species, N trispinata, N. quadrispinata. Whether these are sufficiently reliable characters for the subgenus to remain valid is unclear, but De Assis et al (2007ab) use it in a table & a checklist, for example newly including Nicomache venticola Blake & Hilbig, although it is not stated why this species fits the Loxochona criteria.
Kongsrud & Rapp (2012) have commented on this and other transfers, stating "However, N. canadensis, N. maculata and N. personata are all well-documented members of the subgenus N. (Nicomache) Arwidsson, 1906, as they all possess a more or less symmetrical pygidial funnel with a centrally placed anus within the funnel, and nephridial papillae present on setiger 6 (not known for N. canadensis)."
 [details]
Read, G.; Fauchald, K. (Ed.) (2019). World Polychaeta database. Nicomache (Loxochona) Arwidsson, 1906. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=325629 on 2019-10-15
Date
action
by
2008-03-11 10:36:40Z
created
2008-03-26 11:36:43Z
changed
2010-04-18 04:40:56Z
changed

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original description Arwidsson, Ivar. (1906). Studien über die skandinavischen und arktischen Maldaniden nebst Zusammenstellung der übrigen bisher bekannten Arten dieser Familie. <em>Inaugural-Dissertation zur erlangung der Doktorwürde. Der Mathematisch-Naturwissenschaftlichen Sektion der Philosophischen Fakultät zu Upsala, Upsala Universitet, Upsala [sic].</em> 1-308. Plates 1-12. [published 1906 or at latest 2 Feb 1907]., available online at http://www.biodiversitylibrary.org/bibliography/39358
page(s): 104 [details]  OpenAccess publication 

additional source Kongsrud, J.A.; Rapp, H.T. (2011). <i>Nicomache (Loxochona) lokii</i> sp. nov. (Annelida: Polychaeta: Maldanidae) from the Loki's Castle vent field: an important structure builder in an Arctic vent system. <em>Polar Biology.</em> 35(2), 161-170., available online at https://doi.org/10.1007/s00300-011-1048-4 [details]   

additional source De Assis, J. E.; Alonso, C.; Christoffersen, M. L. (2007). A catalogue and taxonomic keys of the Subfamily Nicomachinae (Polychaeta Maldanidae) of the world. <em>Zootaxa.</em> 1657: 41-55., available online at http://www.mapress.com/zootaxa/list/2007/2007-12.html#Zootaxa%201657 [details]   
From editor or global species database
Taxonomy Arwidsson (1906:104) separated his subgenus Loxochona from the nominal genus because of the slightly oblique (versus straight) truncation of the anal funnel plus lack of nephridia on chaetiger 6 in 2 species, N trispinata, N. quadrispinata. Whether these are sufficiently reliable characters for the subgenus to remain valid is unclear, but De Assis et al (2007ab) use it in a table & a checklist, for example newly including Nicomache venticola Blake & Hilbig, although it is not stated why this species fits the Loxochona criteria.
Kongsrud & Rapp (2012) have commented on this and other transfers, stating "However, N. canadensis, N. maculata and N. personata are all well-documented members of the subgenus N. (Nicomache) Arwidsson, 1906, as they all possess a more or less symmetrical pygidial funnel with a centrally placed anus within the funnel, and nephridial papillae present on setiger 6 (not known for N. canadensis)."
 [details]