A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus

Tetragoniceps bermudensis sp. nov. (Copepoda, Harpacticoida, Tetragonicipitidae) is described based on an ovigerous female collected from Roadside Cave, a tidally influenced anchialine cavern in Bermuda. The new taxon represents the 16th recorded species of Tetragoniceps Brady, 1880. It can be disti...

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Main Authors: Giovanni Mussini, Yuuki J. Niimi, Sahar Khodami, Terue C. Kihara, Pedro Martinez Arbizu, Leocadio Blanco-Bercial
Format: Article
Language:English
Published: Pensoft Publishers 2025-05-01
Series:ZooKeys
Online Access:https://zookeys.pensoft.net/article/144436/download/pdf/
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author Giovanni Mussini
Yuuki J. Niimi
Sahar Khodami
Terue C. Kihara
Pedro Martinez Arbizu
Leocadio Blanco-Bercial
author_facet Giovanni Mussini
Yuuki J. Niimi
Sahar Khodami
Terue C. Kihara
Pedro Martinez Arbizu
Leocadio Blanco-Bercial
author_sort Giovanni Mussini
collection DOAJ
description Tetragoniceps bermudensis sp. nov. (Copepoda, Harpacticoida, Tetragonicipitidae) is described based on an ovigerous female collected from Roadside Cave, a tidally influenced anchialine cavern in Bermuda. The new taxon represents the 16th recorded species of Tetragoniceps Brady, 1880. It can be distinguished from congeneric species by the length:width ratio of the caudal rami (approximately 10 times longer than wide), its cephalothorax with a smooth dorsal surface, and the diagnostic setal formula of its pereiopods 1–5. Tetragoniceps bermudensis sp. nov. is the first record of Tetragoniceps from Bermuda and the first known anchialine species in the genus globally. Based on our description of the new species, we provide a revised key to the species of Tetragoniceps. In addition, we include an updated table of salient morphological characters for the females of the genus, providing grounds for a preliminary analysis of the phylogenetic relationships of its constituent species.
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spelling doaj-art-c02fe792bdb146f8bd4784ab0e9775092025-08-20T02:26:06ZengPensoft PublishersZooKeys1313-29702025-05-01123911910.3897/zookeys.1239.144436144436A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genusGiovanni Mussini0Yuuki J. Niimi1Sahar Khodami2Terue C. Kihara3Pedro Martinez Arbizu4Leocadio Blanco-Bercial5University of CambridgeBermuda Institute of Ocean Sciences (BIOS)Senckenberg am Meer, German Center for Marine Biodiversity ResearchSenckenberg am Meer, German Center for Marine Biodiversity ResearchSenckenberg am Meer, German Center for Marine Biodiversity ResearchBermuda Institute of Ocean Sciences (BIOS)Tetragoniceps bermudensis sp. nov. (Copepoda, Harpacticoida, Tetragonicipitidae) is described based on an ovigerous female collected from Roadside Cave, a tidally influenced anchialine cavern in Bermuda. The new taxon represents the 16th recorded species of Tetragoniceps Brady, 1880. It can be distinguished from congeneric species by the length:width ratio of the caudal rami (approximately 10 times longer than wide), its cephalothorax with a smooth dorsal surface, and the diagnostic setal formula of its pereiopods 1–5. Tetragoniceps bermudensis sp. nov. is the first record of Tetragoniceps from Bermuda and the first known anchialine species in the genus globally. Based on our description of the new species, we provide a revised key to the species of Tetragoniceps. In addition, we include an updated table of salient morphological characters for the females of the genus, providing grounds for a preliminary analysis of the phylogenetic relationships of its constituent species.https://zookeys.pensoft.net/article/144436/download/pdf/
spellingShingle Giovanni Mussini
Yuuki J. Niimi
Sahar Khodami
Terue C. Kihara
Pedro Martinez Arbizu
Leocadio Blanco-Bercial
A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus
ZooKeys
title A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus
title_full A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus
title_fullStr A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus
title_full_unstemmed A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus
title_short A new species of Tetragoniceps Brady, 1880 (Copepoda, Harpacticoida, Tetragonicipitidae) from an anchialine cave in Bermuda, with an updated key to the species of the genus
title_sort new species of tetragoniceps brady 1880 copepoda harpacticoida tetragonicipitidae from an anchialine cave in bermuda with an updated key to the species of the genus
url https://zookeys.pensoft.net/article/144436/download/pdf/
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