Pseudoscalibregma Ashworth 1901
Genus Pseudoscalibregma Ashworth, 1901 Type-species: Scalibregma parvum Hansen, 1879. 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 se...
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ftzenodo:oai:zenodo.org:6102455 2023-06-06T11:46:05+02:00 Pseudoscalibregma Ashworth 1901 Blake, James A. 2015-12-31 https://zenodo.org/record/6102455 https://doi.org/10.5281/zenodo.6102455 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/038D87CDFFA7BC07FF16FB4DF891F9E0 doi:10.11646/zootaxa.4033.1.3 http://zenodo.org/record/289810 http://publication.plazi.org/id/FFB4FFB5FFB6BC15FF81FFC5FFCEFF98 http://zoobank.org/9C0A63B6-5532-484D-BBD7-EDD5250D4ABA doi:10.5281/zenodo.6102454 https://zenodo.org/communities/biosyslit https://zenodo.org/record/6102455 https://doi.org/10.5281/zenodo.6102455 oai:zenodo.org:6102455 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma, pp. 57-93 in Zootaxa 4033(1) 74-75 Biodiversity Taxonomy Animalia Annelida Polychaeta Scalibregmatidae Pseudoscalibregma info:eu-repo/semantics/other publication-taxonomictreatment 2015 ftzenodo https://doi.org/10.5281/zenodo.610245510.11646/zootaxa.4033.1.310.5281/zenodo.6102454 2023-04-13T20:51:49Z Genus Pseudoscalibregma Ashworth, 1901 Type-species: Scalibregma parvum Hansen, 1879. 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. Remarks. Apart from a more variable morphology of dorsal and ventral cirri, the only character that separates Pseudoscalibregma from Scalibregma is the absence of branchiae. The presence of short spinous setae in the first 1‒2 setigers as occurs in species of Scalibregma was confirmed by Imajima (2009) as part of his description of P. orientalis Imajima, 2009 from Japan and Bakken et al. (2014) as part of their redescription of the type species, P. parvum. I can also confirm after a re-examination of the holotype that P. usarpium Blake, 1981 from Antarctica also has these setae. Four species of Pseudoscalibregma have been reported from Antarctic seas: (1) P. bransfieldium (Hartman, 1967), (2) P. usarpium, (3) P. papilla Schüller, 2008, and (4) P. h ar t m a na e (Blake, 1981), new combination. A fifth species was found in the LIS-A collections and is described here. Additional descriptive notes are provided for P. bransfieldium. Character⁄Nο. Setigers 10 14 ̶ 15 16 17 ̶ 18 20 22 ̶ 24 28 30 Length 630 μm 850 ̶ 900 μm 945 ̶ 990 μm 960 ̶ 1,221 μm 1300 ̶ 1875 μm 2.6 ̶ 2.8 mm 3.5 mm 5.67 mm Width 70 μm 220 ̶ 232 μm 305 ̶ 325 μm 353 ̶ 407 μm 450 ̶ 580 μm 0.62 mm 0.75 mm 0.95 mm Prοstοmium Bulbοus,rοunded Bulbοus, Rοunded, Inflated, lateral Becοming wide, Brοad, thickened Lateral hοrns well Lateral hοrns fully extended apically pοinted apically bulges, tapering ... Other/Unknown Material Antarc* Antarctic Antarctica Zenodo Antarctic Bakken ENVELOPE(13.400,13.400,65.585,65.585) Ashworth ENVELOPE(163.083,163.083,-70.933,-70.933) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Annelida Polychaeta Scalibregmatidae Pseudoscalibregma |
spellingShingle |
Biodiversity Taxonomy Animalia Annelida Polychaeta Scalibregmatidae Pseudoscalibregma Blake, James A. Pseudoscalibregma Ashworth 1901 |
topic_facet |
Biodiversity Taxonomy Animalia Annelida Polychaeta Scalibregmatidae Pseudoscalibregma |
description |
Genus Pseudoscalibregma Ashworth, 1901 Type-species: Scalibregma parvum Hansen, 1879. 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. Remarks. Apart from a more variable morphology of dorsal and ventral cirri, the only character that separates Pseudoscalibregma from Scalibregma is the absence of branchiae. The presence of short spinous setae in the first 1‒2 setigers as occurs in species of Scalibregma was confirmed by Imajima (2009) as part of his description of P. orientalis Imajima, 2009 from Japan and Bakken et al. (2014) as part of their redescription of the type species, P. parvum. I can also confirm after a re-examination of the holotype that P. usarpium Blake, 1981 from Antarctica also has these setae. Four species of Pseudoscalibregma have been reported from Antarctic seas: (1) P. bransfieldium (Hartman, 1967), (2) P. usarpium, (3) P. papilla Schüller, 2008, and (4) P. h ar t m a na e (Blake, 1981), new combination. A fifth species was found in the LIS-A collections and is described here. Additional descriptive notes are provided for P. bransfieldium. Character⁄Nο. Setigers 10 14 ̶ 15 16 17 ̶ 18 20 22 ̶ 24 28 30 Length 630 μm 850 ̶ 900 μm 945 ̶ 990 μm 960 ̶ 1,221 μm 1300 ̶ 1875 μm 2.6 ̶ 2.8 mm 3.5 mm 5.67 mm Width 70 μm 220 ̶ 232 μm 305 ̶ 325 μm 353 ̶ 407 μm 450 ̶ 580 μm 0.62 mm 0.75 mm 0.95 mm Prοstοmium Bulbοus,rοunded Bulbοus, Rοunded, Inflated, lateral Becοming wide, Brοad, thickened Lateral hοrns well Lateral hοrns fully extended apically pοinted apically bulges, tapering ... |
format |
Other/Unknown Material |
author |
Blake, James A. |
author_facet |
Blake, James A. |
author_sort |
Blake, James A. |
title |
Pseudoscalibregma Ashworth 1901 |
title_short |
Pseudoscalibregma Ashworth 1901 |
title_full |
Pseudoscalibregma Ashworth 1901 |
title_fullStr |
Pseudoscalibregma Ashworth 1901 |
title_full_unstemmed |
Pseudoscalibregma Ashworth 1901 |
title_sort |
pseudoscalibregma ashworth 1901 |
publishDate |
2015 |
url |
https://zenodo.org/record/6102455 https://doi.org/10.5281/zenodo.6102455 |
long_lat |
ENVELOPE(13.400,13.400,65.585,65.585) ENVELOPE(163.083,163.083,-70.933,-70.933) |
geographic |
Antarctic Bakken Ashworth |
geographic_facet |
Antarctic Bakken Ashworth |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma, pp. 57-93 in Zootaxa 4033(1) 74-75 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/038D87CDFFA7BC07FF16FB4DF891F9E0 doi:10.11646/zootaxa.4033.1.3 http://zenodo.org/record/289810 http://publication.plazi.org/id/FFB4FFB5FFB6BC15FF81FFC5FFCEFF98 http://zoobank.org/9C0A63B6-5532-484D-BBD7-EDD5250D4ABA doi:10.5281/zenodo.6102454 https://zenodo.org/communities/biosyslit https://zenodo.org/record/6102455 https://doi.org/10.5281/zenodo.6102455 oai:zenodo.org:6102455 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.610245510.11646/zootaxa.4033.1.310.5281/zenodo.6102454 |
_version_ |
1767951320596086784 |