Notoixys Kim & Boxshall 2020, gen. nov.
Notoixys gen. nov. Diagnosis . Body inflated, usually with unsegmented, globular metasome. Dorsal cephalic shield expanded ventrolaterally, with paired horn-like processes posterolaterally. Fifth pedigerous somitecompletely fused with fourth. Free urosome 5-segmented. Caudal setae small or absent. R...
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Zenodo
2020
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Online Access: | https://dx.doi.org/10.5281/zenodo.5730231 https://zenodo.org/record/5730231 |
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ftdatacite:10.5281/zenodo.5730231 |
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openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
Biodiversity Taxonomy Animalia Chordata Ascidiacea Enterogona Didemnidae Notoixys |
spellingShingle |
Biodiversity Taxonomy Animalia Chordata Ascidiacea Enterogona Didemnidae Notoixys Kim, Il-Hoi Boxshall, Geoff A. Notoixys Kim & Boxshall 2020, gen. nov. |
topic_facet |
Biodiversity Taxonomy Animalia Chordata Ascidiacea Enterogona Didemnidae Notoixys |
description |
Notoixys gen. nov. Diagnosis . Body inflated, usually with unsegmented, globular metasome. Dorsal cephalic shield expanded ventrolaterally, with paired horn-like processes posterolaterally. Fifth pedigerous somitecompletely fused with fourth. Free urosome 5-segmented. Caudal setae small or absent. Rostrum well-developed.Antennule 7- to 10-segmented. Antenna 4-segmentedwith 2-segmented endopod bearingsmallterminal claw. Mandiblewith coxal gnathobase bearing narrow medial cutting margin; armed with 1 seta on basis, 5 setae on exopod, 1 seta on first endopodal segment, and 4 to 7 setaeon second. Maxillule armedwith 5 or 6 setaeon arthrite, 1 setaon epipodite, 1 or 2 setaeon basis, 4 setaeon exopod, and 3 setaeon endopod; coxal endite absent. Maxilla 5-segmented with 3-segmented endopod; syncoxa bearing 4 endites; basis with 3 setae (or 2 setae plus claw). Maxilliped as unsegmented lobe bearing 3 to 5 setae. Legs 1–4 biramous; segmentation of rami frequently incompletely expressed. Inner coxal seta present at least in leg 1. Leg 1 with inner distal element on basis; exopod 3-segmented, with inner seta on first and second segments, and 7 or 8 setae on third segment. Leg 2 exopod 3-segmented, with inner seta on first and second segments. Exopods of legs 3 and 4 usually with inner seta on first or second, or both segments. Endopods of legs 2–4 usually with inner seta on first or second, or both segments. Leg 5 rudimentary or absent. Type species . Notoixys heardensis gen. et sp. nov. by original designation. Other included species . Notoixys hirsuta gen. et sp. nov. , N. ovata gen. et sp. nov. and Notoixys planiceps gen. etsp. nov. Etymology . The generic name is derived from the combination of noto (=”south” in Greek) and - ixys , the ending of several existing genera of the Notodelphyidae. The name alludes to the zoogeographic distribution of the new genus in the Antarctic or Southern Ocean. Remarks . Notoixys gen. nov. can be distinguished from Loboixys and Doroixys by the more complex state of the armature on the oral appendages and swimming legs. Unlike the latter two genera, Notoixys gen. nov. has a 3-segmented endopod in the maxilla (cf. 2-segmented in Doroixys and 1- or 2-segmented in Loboixys ), and anarrow cutting edge on the coxal gnathobase in the mandible (vs. broad medial margin in Doroixys and Loboixys ). It also differs from Loboixys in having an inner seta on the first and second exopodal segments of legs 1 and 2, whereas setae on these segments are lacking in Loboixys. It also differs from Doroixys in having an inner seta on the proximal segment(s) of endopods of legs 2–4 (vs. lacking in Doroixys ) and it lacks a tapering (exopodal) process on leg 5 which is present in Doroixys . The four species of Notoixys gen. nov. described in the present work live in association with compound ascidians of the genus Aplidium in the Antarctic Ocean. : Published as part of Kim, Il-Hoi & Boxshall, Geoff A., 2020, Untold diversity: the astonishing species richness of the Notodelphyidae (Copepoda: Cyclopoida), a family of symbiotic copepods associated with ascidians (Tunicata), pp. 1-6 in Megataxa 4 (1) on pages 510-512, DOI: 10.11646/megataxa.4.1.1, http://zenodo.org/record/4591138 |
format |
Text |
author |
Kim, Il-Hoi Boxshall, Geoff A. |
author_facet |
Kim, Il-Hoi Boxshall, Geoff A. |
author_sort |
Kim, Il-Hoi |
title |
Notoixys Kim & Boxshall 2020, gen. nov. |
title_short |
Notoixys Kim & Boxshall 2020, gen. nov. |
title_full |
Notoixys Kim & Boxshall 2020, gen. nov. |
title_fullStr |
Notoixys Kim & Boxshall 2020, gen. nov. |
title_full_unstemmed |
Notoixys Kim & Boxshall 2020, gen. nov. |
title_sort |
notoixys kim & boxshall 2020, gen. nov. |
publisher |
Zenodo |
publishDate |
2020 |
url |
https://dx.doi.org/10.5281/zenodo.5730231 https://zenodo.org/record/5730231 |
long_lat |
ENVELOPE(9.895,9.895,63.645,63.645) ENVELOPE(-60.811,-60.811,-62.471,-62.471) |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Ocean Seta Noto |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Ocean Seta Noto |
genre |
Antarc* Antarctic Antarctic Ocean Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Antarctic Ocean Southern Ocean Copepods |
op_relation |
http://zenodo.org/record/4591138 http://publication.plazi.org/id/FFFDFFB3EF513A35FFC5FFCEFFC5FFC1 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/megataxa.4.1.1 http://zenodo.org/record/4591138 http://publication.plazi.org/id/FFFDFFB3EF513A35FFC5FFCEFFC5FFC1 https://dx.doi.org/10.5281/zenodo.5730232 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.5730231 https://doi.org/10.11646/megataxa.4.1.1 https://doi.org/10.5281/zenodo.5730232 |
_version_ |
1766136057915506688 |
spelling |
ftdatacite:10.5281/zenodo.5730231 2023-05-15T13:40:29+02:00 Notoixys Kim & Boxshall 2020, gen. nov. Kim, Il-Hoi Boxshall, Geoff A. 2020 https://dx.doi.org/10.5281/zenodo.5730231 https://zenodo.org/record/5730231 unknown Zenodo http://zenodo.org/record/4591138 http://publication.plazi.org/id/FFFDFFB3EF513A35FFC5FFCEFFC5FFC1 https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/megataxa.4.1.1 http://zenodo.org/record/4591138 http://publication.plazi.org/id/FFFDFFB3EF513A35FFC5FFCEFFC5FFC1 https://dx.doi.org/10.5281/zenodo.5730232 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Chordata Ascidiacea Enterogona Didemnidae Notoixys Taxonomic treatment article-journal Text ScholarlyArticle 2020 ftdatacite https://doi.org/10.5281/zenodo.5730231 https://doi.org/10.11646/megataxa.4.1.1 https://doi.org/10.5281/zenodo.5730232 2022-02-08T15:39:54Z Notoixys gen. nov. Diagnosis . Body inflated, usually with unsegmented, globular metasome. Dorsal cephalic shield expanded ventrolaterally, with paired horn-like processes posterolaterally. Fifth pedigerous somitecompletely fused with fourth. Free urosome 5-segmented. Caudal setae small or absent. Rostrum well-developed.Antennule 7- to 10-segmented. Antenna 4-segmentedwith 2-segmented endopod bearingsmallterminal claw. Mandiblewith coxal gnathobase bearing narrow medial cutting margin; armed with 1 seta on basis, 5 setae on exopod, 1 seta on first endopodal segment, and 4 to 7 setaeon second. Maxillule armedwith 5 or 6 setaeon arthrite, 1 setaon epipodite, 1 or 2 setaeon basis, 4 setaeon exopod, and 3 setaeon endopod; coxal endite absent. Maxilla 5-segmented with 3-segmented endopod; syncoxa bearing 4 endites; basis with 3 setae (or 2 setae plus claw). Maxilliped as unsegmented lobe bearing 3 to 5 setae. Legs 1–4 biramous; segmentation of rami frequently incompletely expressed. Inner coxal seta present at least in leg 1. Leg 1 with inner distal element on basis; exopod 3-segmented, with inner seta on first and second segments, and 7 or 8 setae on third segment. Leg 2 exopod 3-segmented, with inner seta on first and second segments. Exopods of legs 3 and 4 usually with inner seta on first or second, or both segments. Endopods of legs 2–4 usually with inner seta on first or second, or both segments. Leg 5 rudimentary or absent. Type species . Notoixys heardensis gen. et sp. nov. by original designation. Other included species . Notoixys hirsuta gen. et sp. nov. , N. ovata gen. et sp. nov. and Notoixys planiceps gen. etsp. nov. Etymology . The generic name is derived from the combination of noto (=”south” in Greek) and - ixys , the ending of several existing genera of the Notodelphyidae. The name alludes to the zoogeographic distribution of the new genus in the Antarctic or Southern Ocean. Remarks . Notoixys gen. nov. can be distinguished from Loboixys and Doroixys by the more complex state of the armature on the oral appendages and swimming legs. Unlike the latter two genera, Notoixys gen. nov. has a 3-segmented endopod in the maxilla (cf. 2-segmented in Doroixys and 1- or 2-segmented in Loboixys ), and anarrow cutting edge on the coxal gnathobase in the mandible (vs. broad medial margin in Doroixys and Loboixys ). It also differs from Loboixys in having an inner seta on the first and second exopodal segments of legs 1 and 2, whereas setae on these segments are lacking in Loboixys. It also differs from Doroixys in having an inner seta on the proximal segment(s) of endopods of legs 2–4 (vs. lacking in Doroixys ) and it lacks a tapering (exopodal) process on leg 5 which is present in Doroixys . The four species of Notoixys gen. nov. described in the present work live in association with compound ascidians of the genus Aplidium in the Antarctic Ocean. : Published as part of Kim, Il-Hoi & Boxshall, Geoff A., 2020, Untold diversity: the astonishing species richness of the Notodelphyidae (Copepoda: Cyclopoida), a family of symbiotic copepods associated with ascidians (Tunicata), pp. 1-6 in Megataxa 4 (1) on pages 510-512, DOI: 10.11646/megataxa.4.1.1, http://zenodo.org/record/4591138 Text Antarc* Antarctic Antarctic Ocean Southern Ocean Copepods DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean The Antarctic Antarctic Ocean Seta ENVELOPE(9.895,9.895,63.645,63.645) Noto ENVELOPE(-60.811,-60.811,-62.471,-62.471) |