WoRMS taxon details

Pseudoscalibregma Ashworth, 1901

129554  (urn:lsid:marinespecies.org:taxname:129554)

accepted
Genus
Scalibregma parvum Hansen, 1879 accepted as Pseudoscalibregma parvum (Hansen, 1879) (type by subsequent designation)
Eusclerocheilus Hartman, 1967 · unaccepted (subjective synonym)

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neuter
Ashworth, James Hartley. 1901. The anatomy of <i>Scalibregma inflatum</i> Rathke. Quarterly Journal of Microscopical Science, London, 45: 237-309., available online at https://www.biodiversitylibrary.org/page/14709616
page(s): 296 [details]   
Read, G.; Fauchald, K. (Ed.) (2024). World Polychaeta Database. Pseudoscalibregma Ashworth, 1901. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=129554 on 2024-03-28
Date
action
by
2004-12-21 15:54:05Z
created
2006-07-17 15:50:11Z
changed
2008-03-05 09:00:37Z
changed
2008-03-26 11:36:43Z
changed
2011-11-20 22:27:17Z
changed
2013-07-29 15:44:09Z
changed
2014-01-18 19:24:07Z
changed
2024-01-10 02:38:37Z
changed
2024-03-14 20:47:16Z
changed
2024-03-15 08:27:53Z
changed

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original description Ashworth, James Hartley. 1901. The anatomy of <i>Scalibregma inflatum</i> Rathke. Quarterly Journal of Microscopical Science, London, 45: 237-309., available online at https://www.biodiversitylibrary.org/page/14709616
page(s): 296 [details]   

original description  (of Eusclerocheilus Hartman, 1967) Hartman, Olga. (1967). Polychaetous annelids collected by the USNS Eltanin and Staten Island cruises, chiefly from Antarctic Seas. <em>Allan Hancock Monographs in Marine Biology.</em> 2: 1-387.
page(s): 130 [details]  Available for editors  PDF available [request] 

additional source Fauchald, K. (1977). The polychaete worms, definitions and keys to the orders, families and genera. <em>Natural History Museum of Los Angeles County: Los Angeles, CA (USA), Science Series.</em> 28:1-188., available online at http://www.vliz.be/imisdocs/publications/123110.pdf [details]   

additional source Glasby, Christopher J.; Read, Geoffrey B.; Lee, Kenneth E.; Blakemore, R.J.; Fraser, P.M.; Pinder, A.M.; Erséus, C.; Moser, W.E.; Burreson, E.M.; Govedich, F.R.; Davies, R.W.; Dawson, E.W. (2009). Phylum Annelida: bristleworms, earthworms, leeches. <em>[Book chapter].</em> Chapt 17, pp. 312-358. in: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch. [details]  Available for editors  PDF available [request] 

redescription Bakken, T.; Oug, E.; Kongsrud, J. A. (2013). Occurrence and distribution of<em> Pseudoscalibregma</em> and <em>Scalibregma </em>(Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of <em>Scalibregma hanseni</em> n. sp. <i>Zootaxa</i>. 3753(2): 101., available online at https://doi.org/10.11646/zootaxa.3753.2.1
page(s): 102 [genus emendation] [details]   

identification resource Mendes, Samuel Lucas Da Silva Delgado; De Paiva, Paulo Cesar; Rizzo, Alexandra E. (2024). New species of Pseudoscalibregma Ashworth, 1901 (Annelida: Scalibregmatidae Malmgren, 1867) from Brazil. <em>Zootaxa.</em> 5399(1): 19-36., available online at https://www.mapress.com/zt/article/view/zootaxa.5399.1.2
page(s): 32; note: World key to Pseudoscalibregma [details]  Available for editors  PDF available [request] 
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
From editor or global species database
Diagnosis "Body elongate, arenicoliform. Prostomium T-shaped with lateral horns. Peristomium achaetous, surrounding prostomium dorsally and forming upper and lower lips of mouth ventrally. Parapodia of posterior segments with dorsal and ventral cirri; interramal papillae present; postsetal lamellae absent. Branchiae absent. Setae include capillaries, lyrate setae, and sometimes few inconspicuous spinous setae among capillaries of setigers 1‒2, blunt, pointed, or bifurcated, representing homologues of lyrate setae; large conspicuous spines absent. Pygidium with long anal cirri." (Blake, 2015: 74).  [details]

Diagnosis As emended (Baaken et al 2014) "Body elongate, posterior part tapering (‘arenicoliform’). Prostomium T-shaped with distinct lateral processes. Posterior parapodia with dorsal and ventral cirri. Branchiae absent. Large acicular spines absent; small thin, pointed or bifurcate spines present in chaetiger 1." The additional character is presence of chaetiger 1 spines. [details]

Grammatical gender The genus is neuter as the last word in the compound genus name, -bregma, is neuter (see for example the derivation of type genus Scalibregma). At least four of the species-group names are appropriately with neuter suffices, including the type species Pseudoscalibregma parvum (Hansen, 1879). Ashworth (1901:296) had no comment on the genus gender, but instead clearly indicated it was neuter by using three neuter species-group names (longisetosum, parvum, reticulatum) [details]

Original description The genus was originally described in a work dated 1901, but published only in 1902.  [details]

Type designation Ashworth included three species and did not indicate a type species, so the designation must be a subsequent designation. We do not yet have the information on who chose Scalibregma parvum [details]