Eucodonium bitentaculatum
| Main Authors: | Mao Lin, Zhenzu Xu, Jiaqi Huang, Donghui Guo, Chunguang Wang |
|---|---|
| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2016
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6070266 |
| ctrlnum |
6070266 |
|---|---|
| fullrecord |
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<dc schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><coverage>name=Meng-Hsien Chen; east=120.76667; north=21.933332</coverage><creator>Mao Lin</creator><creator>Zhenzu Xu</creator><creator>Jiaqi Huang</creator><creator>Donghui Guo</creator><creator>Chunguang Wang</creator><date>2016-12-31</date><description>Eucodonium bitentaculatum Xu, Huang & Guo, sp. nov. (Figs 1, 4–6) Material examined. Holotype (TIO 006), coastal waters of southern Taiwan, Station 18 (21 ° 56 'N, 120 ° 46 'E), horizontal towing at depth 5 m to 10 m, 1 May 2008, coll. Meng-Hsien Chen. Paratype (TIO 007–008), same data as holotype. Diagnosis. Umbrella bell-shaped, without apical projection; manubrium with conical peduncle; oral tube long about the same length of stomach; mouth with 4 inconspicuous perradial lips, each containing a row of nematocysts; medusa buds on interradial region of stomach; two equally developed tentacles with a terminal swelling, which terminates in a thin fibrous appendage, other two opposite perradial rudimentary bulbs no tentacles; without ocelli. Description. Medusa with bell-shaped, up to 0.5–0.8 mm in height, slight higher or as high as broad; apical jelly slightly thickened; gastric peduncle broad conical, half as long as manubrium, oral tube long, about the same length as that of stomach; manubrium length 2/3 of bell cavity, cylindrical; mouth quadrangular with 4 inconspicuous perradial lips, each containing a row of numerous nematocysts; medusa buds arise from interradial region of stomach; 4 narrow radial canals and circular canal present; 2 equally developed tentacles with a conspicuous terminal swelling terminated in a thin fibrous appendage, with large marginal bulbs containing brown pigment granules, and other 2 opposite rudimentary marginal bulbs without tentacles; no ocelli present; nematocyst not only present in terminal swelling but also along the whole tentacle covered with ring nematocysts; velum middle broad. Distribution. Northern South China Sea (Southern Taiwan). Etymology. The specific name is from the Latin bitentaculatum, meaning bi-tentacles, referring to the two opposite large marginal bulbs with solid equally developed tentacles. Remarks. This new species has following characters which are in common with Eucodonium Hartlaub, 1907: quadrangular manubrium on conical gastric peduncle; mouth with 4 inconspicuous cnidocyst armed lips; medusa buds on stomach; no ocelli present. The new species can be distinguished from the Eucodonium browni Hartlaub, 1907 by following: 1) the former has 2 opposite large marginal bulbs with solid equally developed tentacles with a conspicuous terminal swelling, which terminates in a thin fibrous appendage, and other 2 opposite marginal bulbs very rudimentary without tentacles, while the latter has 4 small marginal bulbs with 4 equally developed tentacles with a conspicuous terminal swelling, which terminal without fibrous appendage; 2) the former has 4 inconspicuous perradial lips, each containing a row of numerous nematocysts, while the latter has 4 inconspicuous perradial lips, each containing a group of about 100 nematocysts (see the key of Eucodonium).</description><description>Published as part of Mao Lin, Zhenzu Xu, Jiaqi Huang, Donghui Guo & Chunguang Wang, 2016, Taxonomic notes on Hydroidomedusae (Cnidaria) from South China Sea I: Family Eucodoniidae (Anthomedusae), pp. 48-53 in Zoological Systematics 41 (1) on pages 49-50, DOI: 10.11865/zs.201602, http://zenodo.org/record/269256</description><identifier>https://zenodo.org/record/6070266</identifier><identifier>10.5281/zenodo.6070266</identifier><identifier>oai:zenodo.org:6070266</identifier><relation>info:eu-repo/semantics/altIdentifier/url/http://treatment.plazi.org/id/FC18FE75FFC90C62A8E1F92FFED1FCE8</relation><relation>doi:10.11865/zs.201602</relation><relation>url:http://zenodo.org/record/269256</relation><relation>url:http://publication.plazi.org/id/0021860DFFC80C60A821FF88FFB9FF9C</relation><relation>doi:10.5281/zenodo.269257</relation><relation>doi:10.5281/zenodo.269258</relation><relation>url:http://zoobank.org/urn:lsid:zoobank.org:pub:CE49B180-42B8-437F-89C2-77C56BBD352B</relation><relation>doi:10.5281/zenodo.6070265</relation><relation>url:https://zenodo.org/communities/biosyslit</relation><rights>info:eu-repo/semantics/openAccess</rights><rights>https://creativecommons.org/publicdomain/zero/1.0/legalcode</rights><source>Taxonomic notes on Hydroidomedusae (Cnidaria) from South China Sea I: Family Eucodoniidae (Anthomedusae), pp. 48-53 in Zoological Systematics 41(1) 49-50</source><subject>Biodiversity</subject><subject>Taxonomy</subject><subject>Animalia</subject><subject>Cnidaria</subject><subject>Hydrozoa</subject><subject>Anthoathecata</subject><subject>Eucodoniidae</subject><subject>Eucodonium</subject><subject>Eucodonium bitentaculatum</subject><title>Eucodonium bitentaculatum</title><type>Other:info:eu-repo/semantics/other</type><type>Other:publication-taxonomictreatment</type><recordID>6070266</recordID></dc>
|
| format |
Other:info:eu-repo/semantics/other Other Other:publication-taxonomictreatment Journal:Journal Journal |
| author |
Mao Lin Zhenzu Xu Jiaqi Huang Donghui Guo Chunguang Wang |
| title |
Eucodonium bitentaculatum |
| publishDate |
2016 |
| topic |
Biodiversity Taxonomy Animalia Cnidaria Hydrozoa Anthoathecata Eucodoniidae Eucodonium Eucodonium bitentaculatum |
| url |
https://zenodo.org/record/6070266 |
| contents |
Eucodonium bitentaculatum Xu, Huang & Guo, sp. nov. (Figs 1, 4–6) Material examined. Holotype (TIO 006), coastal waters of southern Taiwan, Station 18 (21 ° 56 'N, 120 ° 46 'E), horizontal towing at depth 5 m to 10 m, 1 May 2008, coll. Meng-Hsien Chen. Paratype (TIO 007–008), same data as holotype. Diagnosis. Umbrella bell-shaped, without apical projection; manubrium with conical peduncle; oral tube long about the same length of stomach; mouth with 4 inconspicuous perradial lips, each containing a row of nematocysts; medusa buds on interradial region of stomach; two equally developed tentacles with a terminal swelling, which terminates in a thin fibrous appendage, other two opposite perradial rudimentary bulbs no tentacles; without ocelli. Description. Medusa with bell-shaped, up to 0.5–0.8 mm in height, slight higher or as high as broad; apical jelly slightly thickened; gastric peduncle broad conical, half as long as manubrium, oral tube long, about the same length as that of stomach; manubrium length 2/3 of bell cavity, cylindrical; mouth quadrangular with 4 inconspicuous perradial lips, each containing a row of numerous nematocysts; medusa buds arise from interradial region of stomach; 4 narrow radial canals and circular canal present; 2 equally developed tentacles with a conspicuous terminal swelling terminated in a thin fibrous appendage, with large marginal bulbs containing brown pigment granules, and other 2 opposite rudimentary marginal bulbs without tentacles; no ocelli present; nematocyst not only present in terminal swelling but also along the whole tentacle covered with ring nematocysts; velum middle broad. Distribution. Northern South China Sea (Southern Taiwan). Etymology. The specific name is from the Latin bitentaculatum, meaning bi-tentacles, referring to the two opposite large marginal bulbs with solid equally developed tentacles. Remarks. This new species has following characters which are in common with Eucodonium Hartlaub, 1907: quadrangular manubrium on conical gastric peduncle; mouth with 4 inconspicuous cnidocyst armed lips; medusa buds on stomach; no ocelli present. The new species can be distinguished from the Eucodonium browni Hartlaub, 1907 by following: 1) the former has 2 opposite large marginal bulbs with solid equally developed tentacles with a conspicuous terminal swelling, which terminates in a thin fibrous appendage, and other 2 opposite marginal bulbs very rudimentary without tentacles, while the latter has 4 small marginal bulbs with 4 equally developed tentacles with a conspicuous terminal swelling, which terminal without fibrous appendage; 2) the former has 4 inconspicuous perradial lips, each containing a row of numerous nematocysts, while the latter has 4 inconspicuous perradial lips, each containing a group of about 100 nematocysts (see the key of Eucodonium). Published as part of Mao Lin, Zhenzu Xu, Jiaqi Huang, Donghui Guo & Chunguang Wang, 2016, Taxonomic notes on Hydroidomedusae (Cnidaria) from South China Sea I: Family Eucodoniidae (Anthomedusae), pp. 48-53 in Zoological Systematics 41 (1) on pages 49-50, DOI: 10.11865/zs.201602, http://zenodo.org/record/269256 |
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Cognizance Journal of Multidisciplinary Studies |
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Cognizance Journal of Multidisciplinary Studies |
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Stockholm |
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INTERNASIONAL |
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1 |
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| first_indexed |
2022-06-06T06:21:00Z |
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2022-06-06T06:21:00Z |
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dc |
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1734908619713937408 |
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17.610611 |