WoRMS taxon details

Checked: verified by a taxonomic editorStyraconyx sargassi Thulin, 1942

136715  (urn:lsid:marinespecies.org:taxname:136715)

accepted
Species
marine
Thulin, G. (1942). Ein neuer mariner Tardigrad. Meddel Goteborg Museum of Zoology. 99: 1–10. [details]  Available for editors  PDF available [request] 
Checked: verified by a taxonomic editorDistribution Azores part of the North Atlantic Ocean  
Checked: verified by a taxonomic editortype locality contained in Azores part of the North Atlantic Ocean [details]
Checked: verified by a taxonomic editorDistribution This nominal species of the sargassi group has...  
Checked: verified by a taxonomic editorDistribution This nominal species of the sargassi group has a long history of taxonomic confusion and
misidentification (for more details see Kristensen & Higgins 1984a). At present, it is not possible to determine
which records belong to this species and which do not. Kristensen & Higgins (1984a) suggested that this
species may be restricted to algal associations and that specimens from other substrates should be examined
very carefully. Additionally, the same authors rejected the suggestion by Renaud-Mornant (1967b) that the
Chitwood (1951) specimens (marked as Bathyechiniscus tetronyx, Chitwood 1954, p. 325) from the Gulf of
Mexico belong to S. sargassi. Rather, Kristensen & Higgins (1984a) stated that the Chitwood specimens are
neither of these species, but probably belong to two different taxa. For the purposes of this paper we have
included these records but identified them with bracketed question marks as it is not clear to which species
they should be attributed. According to Kristensen & Higgins (1984a), the only records that are most likely to
belong to S. sargassi are those of Rodriguez-Roda (1947, 1952) and Matthews 1938. In conclusion, and in
agreement with Kristensen & Higgins (1984a), only the specimens from California and the type locality should
be considered as valid, while other localities need confirmation. [details]

Trusted: edited by a thematic editorDistribution semi-cosmopolitan  
Trusted: edited by a thematic editorDistribution semi-cosmopolitan [details]
Guidetti, R.; van der Land, J. (2017). Styraconyx sargassi Thulin, 1942. In: Guidetti, R.; McInnes, J. S.; Kristensen, M. R. (2017). World list of Tardigrada. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=136715 on 2017-12-13

Date
action
by
2004-12-21 15:54:05Z
created
2017-02-28 06:30:36Z
changed

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original description Thulin, G. (1942). Ein neuer mariner Tardigrad. Meddel Goteborg Museum of Zoology. 99: 1–10. [details]  Available for editors  PDF available [request] 

basis of record van der Land, J. (2001). Tardigrada, in: Costello, M.J. et al. (Ed.) (2001). 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, 50: pp. 236 (look up in IMIS[details]   

additional source Romano III, F. A. 2009. Tardigrada of the Gulf of Mexico, Pp. 809–813 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas. [details]   

additional source Degma, P.; Bertolani, R.; Guidetti, R. (2009-2016). Actual checklist of Tardigrada species. (Assessed 10/02/2017) pp. 46., available online at http://www.tardigrada.modena.unimo.it/miscellanea/Actual%20checklist%20of%20Tardigrada.pdf [details]  OpenAccess publication 
 
 Present  Inaccurate  Introduced: alien 
 

From editor or global species database
Checked: verified by a taxonomic editorDistribution This nominal species of the sargassi group has a long history of taxonomic confusion and
misidentification (for more details see Kristensen & Higgins 1984a). At present, it is not possible to determine
which records belong to this species and which do not. Kristensen & Higgins (1984a) suggested that this
species may be restricted to algal associations and that specimens from other substrates should be examined
very carefully. Additionally, the same authors rejected the suggestion by Renaud-Mornant (1967b) that the
Chitwood (1951) specimens (marked as Bathyechiniscus tetronyx, Chitwood 1954, p. 325) from the Gulf of
Mexico belong to S. sargassi. Rather, Kristensen & Higgins (1984a) stated that the Chitwood specimens are
neither of these species, but probably belong to two different taxa. For the purposes of this paper we have
included these records but identified them with bracketed question marks as it is not clear to which species
they should be attributed. According to Kristensen & Higgins (1984a), the only records that are most likely to
belong to S. sargassi are those of Rodriguez-Roda (1947, 1952) and Matthews 1938. In conclusion, and in
agreement with Kristensen & Higgins (1984a), only the specimens from California and the type locality should
be considered as valid, while other localities need confirmation. [details]

From regional or thematic species database
Trusted: edited by a thematic editorDistribution semi-cosmopolitan [details]