Tharyx Webster and Benedict 1887
Genus Tharyx Webster and Benedict, 1887 Type species: Tharyx acutus Webster & Benedict, 1887, by monotypy. Diagnosis. Prostomium conical; peristomium elongate, with pair of grooved dorsal tentacles arising on posterior margin anterior to setiger 1; first pair of branchiae typically arising immed...
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ftzenodo:oai:zenodo.org:5664948 2023-05-15T14:24:45+02:00 Tharyx Webster and Benedict 1887 Blake, James A. 2015-12-31 https://zenodo.org/record/5664948 https://doi.org/10.5281/zenodo.5664948 unknown info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/9A3E87FEEB7EFFFFD2F7FA85FC58FF48 doi:10.11646/zootaxa.3919.3.5 http://zenodo.org/record/234051 http://publication.plazi.org/id/6607FF86EB61FFDFD260FFB6FFC0FFB0 http://zoobank.org/743AF37E-54B4-4BCB-A3E8-93092F779A20 doi:10.5281/zenodo.5664947 https://zenodo.org/communities/biosyslit https://zenodo.org/record/5664948 https://doi.org/10.5281/zenodo.5664948 oai:zenodo.org:5664948 info:eu-repo/semantics/openAccess New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic, pp. 501-552 in Zootaxa 3919(3) 532-533 Biodiversity Taxonomy Animalia Annelida Polychaeta Terebellida Cirratulidae Tharyx info:eu-repo/semantics/other publication-taxonomictreatment 2015 ftzenodo https://doi.org/10.5281/zenodo.566494810.11646/zootaxa.3919.3.510.5281/zenodo.5664947 2023-03-10T14:34:25Z Genus Tharyx Webster and Benedict, 1887 Type species: Tharyx acutus Webster & Benedict, 1887, by monotypy. Diagnosis. Prostomium conical; peristomium elongate, with pair of grooved dorsal tentacles arising on posterior margin anterior to setiger 1; first pair of branchiae typically arising immediately posterior to dorsal tentacles either on posterior margin of peristomium or on setiger 1; abdominal segments sometimes beadlike. Noto- and neurosetae arising close to one another, not widely separated. Setae include simple capillaries in anterior and middle setigers, acicular spines in posterior setigers with irregular notched tips, sometimes appearing more or less bidentate, with pair of stunted or rounded knobs but never with distinct, sharply pointed teeth; spines present either in both posterior noto- and neuropodia or only in neuropodia. Pygidium with terminal anus and small ventral lobe or disk. Remarks. Blake (1991) determined that the type species of Tharyx, T. acutus Webster & Benedict, 1887 had knob-tipped acicular spines in addition to capillaries. At the time, Tharyx species were defined as having only capillaries (Hartman 1961). Blake (1991) limited Tharyx to those species having knob-tipped spines and moved species having only simple or serrated capillaries to the genera Aphelochaeta Blake, 1991 and Monticellina Laubier, 1961 respectively. The genus Tharyx superficially appears most closely related to Caulleriella in that both genera have species with modified spines that are more or less bidentate. Caulleriella and Tharyx are easily distinguished, however, by the position of the noto- and neuropodia. In Caulleriella, the setal fascicles are widely separated from one another, so much so that in cross section of some species, they appear to be positioned at four corners. In Tharyx, on the other hand, the setal fascicles are close together. Two new species of T haryx are described as part of this study. One species from Alaska had been previously referred to the genus Chaetozone. The second ... Other/Unknown Material Arctic Alaska Zenodo Benedict ENVELOPE(-66.585,-66.585,-66.157,-66.157) Noto ENVELOPE(-60.811,-60.811,-62.471,-62.471) |
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Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Biodiversity Taxonomy Animalia Annelida Polychaeta Terebellida Cirratulidae Tharyx |
spellingShingle |
Biodiversity Taxonomy Animalia Annelida Polychaeta Terebellida Cirratulidae Tharyx Blake, James A. Tharyx Webster and Benedict 1887 |
topic_facet |
Biodiversity Taxonomy Animalia Annelida Polychaeta Terebellida Cirratulidae Tharyx |
description |
Genus Tharyx Webster and Benedict, 1887 Type species: Tharyx acutus Webster & Benedict, 1887, by monotypy. Diagnosis. Prostomium conical; peristomium elongate, with pair of grooved dorsal tentacles arising on posterior margin anterior to setiger 1; first pair of branchiae typically arising immediately posterior to dorsal tentacles either on posterior margin of peristomium or on setiger 1; abdominal segments sometimes beadlike. Noto- and neurosetae arising close to one another, not widely separated. Setae include simple capillaries in anterior and middle setigers, acicular spines in posterior setigers with irregular notched tips, sometimes appearing more or less bidentate, with pair of stunted or rounded knobs but never with distinct, sharply pointed teeth; spines present either in both posterior noto- and neuropodia or only in neuropodia. Pygidium with terminal anus and small ventral lobe or disk. Remarks. Blake (1991) determined that the type species of Tharyx, T. acutus Webster & Benedict, 1887 had knob-tipped acicular spines in addition to capillaries. At the time, Tharyx species were defined as having only capillaries (Hartman 1961). Blake (1991) limited Tharyx to those species having knob-tipped spines and moved species having only simple or serrated capillaries to the genera Aphelochaeta Blake, 1991 and Monticellina Laubier, 1961 respectively. The genus Tharyx superficially appears most closely related to Caulleriella in that both genera have species with modified spines that are more or less bidentate. Caulleriella and Tharyx are easily distinguished, however, by the position of the noto- and neuropodia. In Caulleriella, the setal fascicles are widely separated from one another, so much so that in cross section of some species, they appear to be positioned at four corners. In Tharyx, on the other hand, the setal fascicles are close together. Two new species of T haryx are described as part of this study. One species from Alaska had been previously referred to the genus Chaetozone. The second ... |
format |
Other/Unknown Material |
author |
Blake, James A. |
author_facet |
Blake, James A. |
author_sort |
Blake, James A. |
title |
Tharyx Webster and Benedict 1887 |
title_short |
Tharyx Webster and Benedict 1887 |
title_full |
Tharyx Webster and Benedict 1887 |
title_fullStr |
Tharyx Webster and Benedict 1887 |
title_full_unstemmed |
Tharyx Webster and Benedict 1887 |
title_sort |
tharyx webster and benedict 1887 |
publishDate |
2015 |
url |
https://zenodo.org/record/5664948 https://doi.org/10.5281/zenodo.5664948 |
long_lat |
ENVELOPE(-66.585,-66.585,-66.157,-66.157) ENVELOPE(-60.811,-60.811,-62.471,-62.471) |
geographic |
Benedict Noto |
geographic_facet |
Benedict Noto |
genre |
Arctic Alaska |
genre_facet |
Arctic Alaska |
op_source |
New species of Chaetozone and Tharyx (Polychaeta: Cirratulidae) from the Alaskan and Canadian Arctic and the Northeastern Pacific, including a description of the lectotype of Chaetozone setosa Malmgren from Spitsbergen in the Norwegian Arctic, pp. 501-552 in Zootaxa 3919(3) 532-533 |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/9A3E87FEEB7EFFFFD2F7FA85FC58FF48 doi:10.11646/zootaxa.3919.3.5 http://zenodo.org/record/234051 http://publication.plazi.org/id/6607FF86EB61FFDFD260FFB6FFC0FFB0 http://zoobank.org/743AF37E-54B4-4BCB-A3E8-93092F779A20 doi:10.5281/zenodo.5664947 https://zenodo.org/communities/biosyslit https://zenodo.org/record/5664948 https://doi.org/10.5281/zenodo.5664948 oai:zenodo.org:5664948 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.566494810.11646/zootaxa.3919.3.510.5281/zenodo.5664947 |
_version_ |
1766297211523563520 |