Hebella macroplana Watson 2019, sp. nov.
Hebella macroplana sp. nov. http://zoobank.org/urn:lsid:zoobank.org:act:CC386770-19A6- 4ACE-8F5C-91F9963120B8 Figure 1f Record. QM G337336. Holotype, one microslide. Coll: eastern Bass Strait, Victoria, 39.552 S, 149.553 E to 39.496 S, 149.598 E, 4197– 4133 m, beam trawl, 23/05/2017. Description. Fi...
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ftzenodo:oai:zenodo.org:8082510 2023-07-16T03:52:46+02:00 Hebella macroplana Watson 2019, sp. nov. Watson, Jeanette E. name=eastern Bass Strait; east=149.598; north=-39.496 2019-12-31 https://zenodo.org/record/8082510 https://doi.org/10.5281/zenodo.8082510 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/481587DFFFACFFE18C18FBB82E79F292 doi:10.24199/j.mmv.2019.78.04 http://zenodo.org/record/8065289 http://publication.plazi.org/id/B42CFFA7FFADFFE38F29FFF02F1EF040 http://zoobank.org/urn:lsid:zoobank.org:pub:D3BA513B-E7D6-41C5-92E4-E643ACA586E1 doi:10.5281/zenodo.8082509 https://zenodo.org/communities/biosyslit https://zenodo.org/record/8082510 https://doi.org/10.5281/zenodo.8082510 oai:zenodo.org:8082510 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Bathyal and abyssal hydroids (Hydrozoa, Leptothecata) from southeastern Australia, pp. 65-72 in Memoirs of Museum Victoria 78 66-67 Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Hebellidae Hebella Hebella macroplana info:eu-repo/semantics/other publication-taxonomictreatment 2019 ftzenodo https://doi.org/10.5281/zenodo.808251010.24199/j.mmv.2019.78.0410.5281/zenodo.8082509 2023-06-27T22:59:53Z Hebella macroplana sp. nov. http://zoobank.org/urn:lsid:zoobank.org:act:CC386770-19A6- 4ACE-8F5C-91F9963120B8 Figure 1f Record. QM G337336. Holotype, one microslide. Coll: eastern Bass Strait, Victoria, 39.552 S, 149.553 E to 39.496 S, 149.598 E, 4197– 4133 m, beam trawl, 23/05/2017. Description. Five stolonal hydrothecae creeping on stem of an antipatharian. Colony entangled with remnants of an unidentifiable anthoathecate hydroid. Hydrorhizal stolon smooth, thin. Pedicel of hydrotheca short, smooth, curved, passing upwards to diaphragm. Hydrothecae tubular, very large, slightly asymmetrical or symmetrical, adcauline side convex to above diaphragm, walls smooth to margin. Diaphragm a barely discernible transverse or slightly oblique ring. Margin circular, slightly everted, one hydrotheca with two widely separated marginal replications. Perisarc very thin, smooth. Remarks. One hydrotheca contains approximately 10 degenerated tentacles indicating that the structure it is not an empty gonotheca. The unsegmented hydrothecal pedicel is very short, and in some hydrothecae it is slightly curved to accommodate the asymmetry of the hydrotheca. The diaphragm varies from a membranous to a thin perisarcal ring. Three genera considered were Hebella, Halisiphonia and Scandia; the latter two genera were rejected because they have long hydrothecal pedicels. Hebella macroplana most resembles the Antarctic species Hebella plana Ritchie, 1907; however, the hydrotheca of H. plana is much smaller and has a longer and straighter pedicel [see Totton (1930); Briggs (1938); Boero et al. (1997)]. Although the present material is meagre and without gonothecae, the hydrotheca is extremely large and much bigger than any known species. Etymology. The name alludes to the large hydrotheca compared with that of H. plana. Published as part of Watson, Jeanette E., 2019, Bathyal and abyssal hydroids (Hydrozoa, Leptothecata) from southeastern Australia, pp. 65-72 in Memoirs of Museum Victoria 78 on pages 66-67, DOI:10.24199/j.mmv.2019.78.04, ... Other/Unknown Material Antarc* Antarctic Zenodo Antarctic The Antarctic Briggs ENVELOPE(-63.017,-63.017,-64.517,-64.517) Ritchie ENVELOPE(158.417,158.417,-78.533,-78.533) |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Hebellidae Hebella Hebella macroplana |
spellingShingle |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Hebellidae Hebella Hebella macroplana Watson, Jeanette E. Hebella macroplana Watson 2019, sp. nov. |
topic_facet |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Leptothecata Hebellidae Hebella Hebella macroplana |
description |
Hebella macroplana sp. nov. http://zoobank.org/urn:lsid:zoobank.org:act:CC386770-19A6- 4ACE-8F5C-91F9963120B8 Figure 1f Record. QM G337336. Holotype, one microslide. Coll: eastern Bass Strait, Victoria, 39.552 S, 149.553 E to 39.496 S, 149.598 E, 4197– 4133 m, beam trawl, 23/05/2017. Description. Five stolonal hydrothecae creeping on stem of an antipatharian. Colony entangled with remnants of an unidentifiable anthoathecate hydroid. Hydrorhizal stolon smooth, thin. Pedicel of hydrotheca short, smooth, curved, passing upwards to diaphragm. Hydrothecae tubular, very large, slightly asymmetrical or symmetrical, adcauline side convex to above diaphragm, walls smooth to margin. Diaphragm a barely discernible transverse or slightly oblique ring. Margin circular, slightly everted, one hydrotheca with two widely separated marginal replications. Perisarc very thin, smooth. Remarks. One hydrotheca contains approximately 10 degenerated tentacles indicating that the structure it is not an empty gonotheca. The unsegmented hydrothecal pedicel is very short, and in some hydrothecae it is slightly curved to accommodate the asymmetry of the hydrotheca. The diaphragm varies from a membranous to a thin perisarcal ring. Three genera considered were Hebella, Halisiphonia and Scandia; the latter two genera were rejected because they have long hydrothecal pedicels. Hebella macroplana most resembles the Antarctic species Hebella plana Ritchie, 1907; however, the hydrotheca of H. plana is much smaller and has a longer and straighter pedicel [see Totton (1930); Briggs (1938); Boero et al. (1997)]. Although the present material is meagre and without gonothecae, the hydrotheca is extremely large and much bigger than any known species. Etymology. The name alludes to the large hydrotheca compared with that of H. plana. Published as part of Watson, Jeanette E., 2019, Bathyal and abyssal hydroids (Hydrozoa, Leptothecata) from southeastern Australia, pp. 65-72 in Memoirs of Museum Victoria 78 on pages 66-67, DOI:10.24199/j.mmv.2019.78.04, ... |
format |
Other/Unknown Material |
author |
Watson, Jeanette E. |
author_facet |
Watson, Jeanette E. |
author_sort |
Watson, Jeanette E. |
title |
Hebella macroplana Watson 2019, sp. nov. |
title_short |
Hebella macroplana Watson 2019, sp. nov. |
title_full |
Hebella macroplana Watson 2019, sp. nov. |
title_fullStr |
Hebella macroplana Watson 2019, sp. nov. |
title_full_unstemmed |
Hebella macroplana Watson 2019, sp. nov. |
title_sort |
hebella macroplana watson 2019, sp. nov. |
publishDate |
2019 |
url |
https://zenodo.org/record/8082510 https://doi.org/10.5281/zenodo.8082510 |
op_coverage |
name=eastern Bass Strait; east=149.598; north=-39.496 |
long_lat |
ENVELOPE(-63.017,-63.017,-64.517,-64.517) ENVELOPE(158.417,158.417,-78.533,-78.533) |
geographic |
Antarctic The Antarctic Briggs Ritchie |
geographic_facet |
Antarctic The Antarctic Briggs Ritchie |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Bathyal and abyssal hydroids (Hydrozoa, Leptothecata) from southeastern Australia, pp. 65-72 in Memoirs of Museum Victoria 78 66-67 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/481587DFFFACFFE18C18FBB82E79F292 doi:10.24199/j.mmv.2019.78.04 http://zenodo.org/record/8065289 http://publication.plazi.org/id/B42CFFA7FFADFFE38F29FFF02F1EF040 http://zoobank.org/urn:lsid:zoobank.org:pub:D3BA513B-E7D6-41C5-92E4-E643ACA586E1 doi:10.5281/zenodo.8082509 https://zenodo.org/communities/biosyslit https://zenodo.org/record/8082510 https://doi.org/10.5281/zenodo.8082510 oai:zenodo.org:8082510 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.808251010.24199/j.mmv.2019.78.0410.5281/zenodo.8082509 |
_version_ |
1771547082604150784 |