Hamacantha (Vomerula) klausruetzleri Castello-Branco & Hajdu 2018, sp. nov.
Hamacantha (Vomerula) klausruetzleri sp. nov. Fig. 3 Holotype. MNRJ 17983, Rio Grande Rise, SW Atlantic (PROERG, ERG 61‒L2, ‒ 33.5747S / ‒ 31.0970W), 1245‒ 1165 m depth, coll. R.V. ‘ Marion Dufresne’, 2011.07.15. Diagnosis. This is the only species of Hamacantha (Vomerula) with two types of megascle...
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ftzenodo:oai:zenodo.org:5964349 2023-05-15T17:36:52+02:00 Hamacantha (Vomerula) klausruetzleri Castello-Branco & Hajdu 2018, sp. nov. Castello-Branco, Cristiana Hajdu, Eduardo name=Rio Grande Rise; east=-31.097; north=-33.5747 2018-08-31 https://zenodo.org/record/5964349 https://doi.org/10.5281/zenodo.5964349 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03AD87A4B41CFFBAFF53FA96D7F28DDF doi:10.11646/zootaxa.4466.1.8 http://zenodo.org/record/1442116 http://publication.plazi.org/id/FF94FFDCB41FFFBDFFC4FFD9D4498D0A doi:10.5281/zenodo.1442122 http://zoobank.org/76DFA36C-8A3D-4CA8-90BF-8E85BF3F37F9 doi:10.5281/zenodo.5964348 https://zenodo.org/communities/biosyslit https://zenodo.org/record/5964349 https://doi.org/10.5281/zenodo.5964349 oai:zenodo.org:5964349 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Two new Hamacantha (Vomerula) from the Rio Grande Rise (SW Atlantic) (Hamacanthidae, Porifera), pp. 69-77 in Zootaxa 4466(1) 72-75 Biodiversity Taxonomy Animalia Porifera Demospongiae Poecilosclerida Hamacanthidae Hamacantha Hamacantha klausruetzleri info:eu-repo/semantics/other publication-taxonomictreatment 2018 ftzenodo https://doi.org/10.5281/zenodo.596434910.11646/zootaxa.4466.1.810.5281/zenodo.144212210.5281/zenodo.5964348 2023-03-10T14:58:10Z Hamacantha (Vomerula) klausruetzleri sp. nov. Fig. 3 Holotype. MNRJ 17983, Rio Grande Rise, SW Atlantic (PROERG, ERG 61‒L2, ‒ 33.5747S / ‒ 31.0970W), 1245‒ 1165 m depth, coll. R.V. ‘ Marion Dufresne’, 2011.07.15. Diagnosis. This is the only species of Hamacantha (Vomerula) with two types of megascleres (styles and strongyles), two categories of diancistras, and two categories of sigmas. Description. The single specimen is a thin transparent crust, 16 x 15 mm in area, and 1 mm thick (Fig. 3A). Surface smooth, with no visible oscula. Consistency very soft and fragile. Colour alive not recorded, and transparent to off white in ethanol. Skeleton. Ectosomal skeleton comprising tangential tracts of styles and strongyles. Choanosomal skeleton cavernous with ascending tracts of megascleres ending in bouquets at the ectosome (Fig. 3B). Spicules. Megascleres, styles and strongyles (Fig. 3C, D). Styles straight to slightly curved, smooth, and slightly fusiform with the end tapering gradually; 398‒452‒514 x 7 ‒10.2‒12 µm. Strongyles slightly curved, smooth: 291‒326.2‒349 x 10 ‒12.3‒14 µm. Microscleres two categories of diancistras and of sigmas. Diancistras I (Fig. 3E) stouter, nearly straight, without visible fimbriae, hooks each about 1/4 the total length, 175‒224.4‒262 µm. Diancistras II, cyrtancistra-like in shape, (Fig. 3F) stouter, without visible fimbriae, but terminal hooks well marked, 36‒44.2‒50 µm. Sigmas I C-shaped, with markedly curved ends, nearly orthogonal to the inner area (Fig. 3G in part and 3H), 74‒92.3‒115 µm. Sigmas II (Fig. 3I) C or S-shaped, 29‒38.5‒50 µm. H. (V.) agassizi Topsent, 1920 340 – 416 x 8 – 10 127 – 140 Sigmas: 12 Gulf of Mexico sensu Van Soest (1984) 338 – 399 x 3 – 5 110 – 133 Sigmas: 11 – 21 Jamaica H. (V.) azorica Topsent, 1904 n.r. n.r. Raphides I: 120; Raphides II: 45 North Atlantic Ocean – Azores, Canary Islands, and Madeira / 200 – 1022 sensu Calcinai et al. (2013) 290 – 400 x 5 – 12 190 – 240 x 30 – 45 Raphides: 85 – 105 x 1.5 – 2.5; microxeas: 17.5 – 40 x 1.2 – 1.5 Strait of ... Other/Unknown Material North Atlantic Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Porifera Demospongiae Poecilosclerida Hamacanthidae Hamacantha Hamacantha klausruetzleri |
spellingShingle |
Biodiversity Taxonomy Animalia Porifera Demospongiae Poecilosclerida Hamacanthidae Hamacantha Hamacantha klausruetzleri Castello-Branco, Cristiana Hajdu, Eduardo Hamacantha (Vomerula) klausruetzleri Castello-Branco & Hajdu 2018, sp. nov. |
topic_facet |
Biodiversity Taxonomy Animalia Porifera Demospongiae Poecilosclerida Hamacanthidae Hamacantha Hamacantha klausruetzleri |
description |
Hamacantha (Vomerula) klausruetzleri sp. nov. Fig. 3 Holotype. MNRJ 17983, Rio Grande Rise, SW Atlantic (PROERG, ERG 61‒L2, ‒ 33.5747S / ‒ 31.0970W), 1245‒ 1165 m depth, coll. R.V. ‘ Marion Dufresne’, 2011.07.15. Diagnosis. This is the only species of Hamacantha (Vomerula) with two types of megascleres (styles and strongyles), two categories of diancistras, and two categories of sigmas. Description. The single specimen is a thin transparent crust, 16 x 15 mm in area, and 1 mm thick (Fig. 3A). Surface smooth, with no visible oscula. Consistency very soft and fragile. Colour alive not recorded, and transparent to off white in ethanol. Skeleton. Ectosomal skeleton comprising tangential tracts of styles and strongyles. Choanosomal skeleton cavernous with ascending tracts of megascleres ending in bouquets at the ectosome (Fig. 3B). Spicules. Megascleres, styles and strongyles (Fig. 3C, D). Styles straight to slightly curved, smooth, and slightly fusiform with the end tapering gradually; 398‒452‒514 x 7 ‒10.2‒12 µm. Strongyles slightly curved, smooth: 291‒326.2‒349 x 10 ‒12.3‒14 µm. Microscleres two categories of diancistras and of sigmas. Diancistras I (Fig. 3E) stouter, nearly straight, without visible fimbriae, hooks each about 1/4 the total length, 175‒224.4‒262 µm. Diancistras II, cyrtancistra-like in shape, (Fig. 3F) stouter, without visible fimbriae, but terminal hooks well marked, 36‒44.2‒50 µm. Sigmas I C-shaped, with markedly curved ends, nearly orthogonal to the inner area (Fig. 3G in part and 3H), 74‒92.3‒115 µm. Sigmas II (Fig. 3I) C or S-shaped, 29‒38.5‒50 µm. H. (V.) agassizi Topsent, 1920 340 – 416 x 8 – 10 127 – 140 Sigmas: 12 Gulf of Mexico sensu Van Soest (1984) 338 – 399 x 3 – 5 110 – 133 Sigmas: 11 – 21 Jamaica H. (V.) azorica Topsent, 1904 n.r. n.r. Raphides I: 120; Raphides II: 45 North Atlantic Ocean – Azores, Canary Islands, and Madeira / 200 – 1022 sensu Calcinai et al. (2013) 290 – 400 x 5 – 12 190 – 240 x 30 – 45 Raphides: 85 – 105 x 1.5 – 2.5; microxeas: 17.5 – 40 x 1.2 – 1.5 Strait of ... |
format |
Other/Unknown Material |
author |
Castello-Branco, Cristiana Hajdu, Eduardo |
author_facet |
Castello-Branco, Cristiana Hajdu, Eduardo |
author_sort |
Castello-Branco, Cristiana |
title |
Hamacantha (Vomerula) klausruetzleri Castello-Branco & Hajdu 2018, sp. nov. |
title_short |
Hamacantha (Vomerula) klausruetzleri Castello-Branco & Hajdu 2018, sp. nov. |
title_full |
Hamacantha (Vomerula) klausruetzleri Castello-Branco & Hajdu 2018, sp. nov. |
title_fullStr |
Hamacantha (Vomerula) klausruetzleri Castello-Branco & Hajdu 2018, sp. nov. |
title_full_unstemmed |
Hamacantha (Vomerula) klausruetzleri Castello-Branco & Hajdu 2018, sp. nov. |
title_sort |
hamacantha (vomerula) klausruetzleri castello-branco & hajdu 2018, sp. nov. |
publishDate |
2018 |
url |
https://zenodo.org/record/5964349 https://doi.org/10.5281/zenodo.5964349 |
op_coverage |
name=Rio Grande Rise; east=-31.097; north=-33.5747 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Two new Hamacantha (Vomerula) from the Rio Grande Rise (SW Atlantic) (Hamacanthidae, Porifera), pp. 69-77 in Zootaxa 4466(1) 72-75 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/03AD87A4B41CFFBAFF53FA96D7F28DDF doi:10.11646/zootaxa.4466.1.8 http://zenodo.org/record/1442116 http://publication.plazi.org/id/FF94FFDCB41FFFBDFFC4FFD9D4498D0A doi:10.5281/zenodo.1442122 http://zoobank.org/76DFA36C-8A3D-4CA8-90BF-8E85BF3F37F9 doi:10.5281/zenodo.5964348 https://zenodo.org/communities/biosyslit https://zenodo.org/record/5964349 https://doi.org/10.5281/zenodo.5964349 oai:zenodo.org:5964349 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.596434910.11646/zootaxa.4466.1.810.5281/zenodo.144212210.5281/zenodo.5964348 |
_version_ |
1766136506757414912 |