Four new deep-water flabelligerid species from Pacific Costa Rica (Annelida, Sedentaria, Flabelligeridae)
The discovery of four undescribed flabelligerid species from deep-water in Pacific Costa Rica resulted in the restriction of Diplocirrus Haase, 1915. As currently understood, Diplocirrus and Pherusa Oken, 1807 are separated after their morphological pattern. The species belonging in Diplocirrus have...
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2020
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ftmagnoliapress:oai:ojs.mapress.com:article/40532 2023-05-15T15:13:37+02:00 Four new deep-water flabelligerid species from Pacific Costa Rica (Annelida, Sedentaria, Flabelligeridae) SALAZAR-VALLEJO, SERGIO I. 2020-11-27 application/pdf https://www.mapress.com/j/zt/article/view/zootaxa.4885.4.6 https://doi.org/10.11646/zootaxa.4885.4.6 eng eng Mangolia Press https://www.mapress.com/j/zt/article/view/zootaxa.4885.4.6/42028 https://www.mapress.com/j/zt/article/view/zootaxa.4885.4.6 doi:10.11646/zootaxa.4885.4.6 Copyright (c) 2020 Magnolia press Zootaxa; Vol 4885, No 4: 27 Nov. 2020; 560–578 1175-5334 1175-5326 10.11646/zootaxa.4885.4 Annelida Diplocirrus Lamispina Pherusa Saphobranchia anchylosed neurochaetae info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2020 ftmagnoliapress https://doi.org/10.11646/zootaxa.4885.4.6 https://doi.org/10.11646/zootaxa.4885.4 2020-12-01T17:55:12Z The discovery of four undescribed flabelligerid species from deep-water in Pacific Costa Rica resulted in the restriction of Diplocirrus Haase, 1915. As currently understood, Diplocirrus and Pherusa Oken, 1807 are separated after their morphological pattern. The species belonging in Diplocirrus have two types of branchiae, poorly developed cephalic cages and multiarticulate neurochaetae, whereas Pherusa species have branchiae of one type, well-developed cephalic cages and completely anchylosed neurochaetae. Benthic sampling and processing usually damage cephalic cages and if chaetae are completely broken, one could regard specimens without them, when they actually have it, but lost after sieving. Sampling using Alvin deep-sea submarine at methane seeps off Costa Rica resulted in some well-preserved specimens, and some of them fall between these two genera because they have well developed cephalic cages, and multiarticulate neurochaetae. Saphobranchia Chamberlin, 1919, with Stylarioides longisetosa von Marenzeller, 1890, as type species, is herein reinstated for some species previously included in Diplocirrus, restricted. The transferred species, including three ones newly described herein, have branchiae of a single type, long cephalic cage and body chaetae, and neurochaetae basally anchylosed and medially and distally articulated; some species currently included in Diplocirrus described from Arctic or deep water sediments are transferred into it. A key to identify all species in Saphobranchia, and another key to identify species in the restricted Diplocirrus are also included. The three new Saphobranchia species are S. canela n. sp., S. ilys n. sp. and S. omorpha n. sp. The fourth species belongs in Lamispina Salazar-Vallejo, 2014, and it is herein described as L. polycerata n. sp. after the presence of some long papillae along anterior margin of chaetiger 1. Article in Journal/Newspaper Arctic Magnolia press Arctic Pacific Zootaxa 4885 4 560 578 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Annelida Diplocirrus Lamispina Pherusa Saphobranchia anchylosed neurochaetae |
spellingShingle |
Annelida Diplocirrus Lamispina Pherusa Saphobranchia anchylosed neurochaetae SALAZAR-VALLEJO, SERGIO I. Four new deep-water flabelligerid species from Pacific Costa Rica (Annelida, Sedentaria, Flabelligeridae) |
topic_facet |
Annelida Diplocirrus Lamispina Pherusa Saphobranchia anchylosed neurochaetae |
description |
The discovery of four undescribed flabelligerid species from deep-water in Pacific Costa Rica resulted in the restriction of Diplocirrus Haase, 1915. As currently understood, Diplocirrus and Pherusa Oken, 1807 are separated after their morphological pattern. The species belonging in Diplocirrus have two types of branchiae, poorly developed cephalic cages and multiarticulate neurochaetae, whereas Pherusa species have branchiae of one type, well-developed cephalic cages and completely anchylosed neurochaetae. Benthic sampling and processing usually damage cephalic cages and if chaetae are completely broken, one could regard specimens without them, when they actually have it, but lost after sieving. Sampling using Alvin deep-sea submarine at methane seeps off Costa Rica resulted in some well-preserved specimens, and some of them fall between these two genera because they have well developed cephalic cages, and multiarticulate neurochaetae. Saphobranchia Chamberlin, 1919, with Stylarioides longisetosa von Marenzeller, 1890, as type species, is herein reinstated for some species previously included in Diplocirrus, restricted. The transferred species, including three ones newly described herein, have branchiae of a single type, long cephalic cage and body chaetae, and neurochaetae basally anchylosed and medially and distally articulated; some species currently included in Diplocirrus described from Arctic or deep water sediments are transferred into it. A key to identify all species in Saphobranchia, and another key to identify species in the restricted Diplocirrus are also included. The three new Saphobranchia species are S. canela n. sp., S. ilys n. sp. and S. omorpha n. sp. The fourth species belongs in Lamispina Salazar-Vallejo, 2014, and it is herein described as L. polycerata n. sp. after the presence of some long papillae along anterior margin of chaetiger 1. |
format |
Article in Journal/Newspaper |
author |
SALAZAR-VALLEJO, SERGIO I. |
author_facet |
SALAZAR-VALLEJO, SERGIO I. |
author_sort |
SALAZAR-VALLEJO, SERGIO I. |
title |
Four new deep-water flabelligerid species from Pacific Costa Rica (Annelida, Sedentaria, Flabelligeridae) |
title_short |
Four new deep-water flabelligerid species from Pacific Costa Rica (Annelida, Sedentaria, Flabelligeridae) |
title_full |
Four new deep-water flabelligerid species from Pacific Costa Rica (Annelida, Sedentaria, Flabelligeridae) |
title_fullStr |
Four new deep-water flabelligerid species from Pacific Costa Rica (Annelida, Sedentaria, Flabelligeridae) |
title_full_unstemmed |
Four new deep-water flabelligerid species from Pacific Costa Rica (Annelida, Sedentaria, Flabelligeridae) |
title_sort |
four new deep-water flabelligerid species from pacific costa rica (annelida, sedentaria, flabelligeridae) |
publisher |
Mangolia Press |
publishDate |
2020 |
url |
https://www.mapress.com/j/zt/article/view/zootaxa.4885.4.6 https://doi.org/10.11646/zootaxa.4885.4.6 |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Zootaxa; Vol 4885, No 4: 27 Nov. 2020; 560–578 1175-5334 1175-5326 10.11646/zootaxa.4885.4 |
op_relation |
https://www.mapress.com/j/zt/article/view/zootaxa.4885.4.6/42028 https://www.mapress.com/j/zt/article/view/zootaxa.4885.4.6 doi:10.11646/zootaxa.4885.4.6 |
op_rights |
Copyright (c) 2020 Magnolia press |
op_doi |
https://doi.org/10.11646/zootaxa.4885.4.6 https://doi.org/10.11646/zootaxa.4885.4 |
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Zootaxa |
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4885 |
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4 |
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560 |
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578 |
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1766344156558393344 |