180 lines
15 KiB
XML
180 lines
15 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.422.7501" ID-GBIF-Dataset="e0f2938a-7272-4704-8e2c-763a78f9b4d0" ID-PMC="PMC4109449" ID-Pensoft-Pub="1313-2970-422-115" ID-PubMed="25061392" ID-ZBK="9AC49D5517434872BA3B39EF27A113AB" ModsDocAuthor="" ModsDocDate="2014" ModsDocID="1313-2970-422-115" ModsDocOrigin="ZooKeys 422" ModsDocTitle="Two new species of Mediomastus (Annelida, Capitellidae) from Tokyo Bay, Japan" checkinTime="1451245651752" checkinUser="pensoft" docAuthor="Tomioka, Shinri, Nishi, Eijiroh & Kajihara, Hiroshi" docDate="2014" docId="E05F7E31C10CE8FE672E67B4F34983F9" docLanguage="en" docName="ZooKeys 422: 115-126" docOrigin="ZooKeys 422" docSource="http://dx.doi.org/10.3897/zookeys.422.7501" docTitle="Mediomastus duobalteus Tomioka, Nishi & Kajihara, 2014, sp. n." docType="treatment" docUuid="BD73215A-6470-4BE1-A439-A3F6ED585513" docUuidSource="ZooBank" docVersion="4" lastPageNumber="119" masterDocId="FF9DFF93875D221AFFECFFDC0D35FFA7" masterDocTitle="Two new species of Mediomastus (Annelida, Capitellidae) from Tokyo Bay, Japan" masterLastPageNumber="126" masterPageNumber="115" pageNumber="117" updateTime="1668158814428" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Two new species of Mediomastus (Annelida, Capitellidae) from Tokyo Bay, Japan</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Tomioka, Shinri</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Nishi, Eijiroh</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Kajihara, Hiroshi</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2014</mods:date>
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<mods:detail type="volume">
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<mods:number>422</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>115</mods:start>
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<mods:end>126</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.422.7501</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.422.7501</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-422-115</mods:identifier>
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<mods:identifier type="ZBK">9AC49D5517434872BA3B39EF27A113AB</mods:identifier>
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<mods:identifier type="ZooBank">9AC49D5517434872BA3B39EF27A113AB</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152053993" LSID="urn:lsid:zoobank.org:act:BD73215A-6470-4BE1-A439-A3F6ED585513" httpUri="http://treatment.plazi.org/id/E05F7E31C10CE8FE672E67B4F34983F9" lastPageId="5" lastPageNumber="119" pageId="2" pageNumber="117">
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<subSubSection pageId="2" pageNumber="117" type="multiple">
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<paragraph pageId="2" pageNumber="117">Taxon classification Animalia Scolecida Capitellidae</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="117" type="nomenclature">
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<paragraph pageId="2" pageNumber="117">
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<taxonomicName LSID="http://zoobank.org/BD73215A-6470-4BE1-A439-A3F6ED585513" class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="2" pageNumber="117" phylum="Annelida" rank="species" species="duobalteus">Mediomastus duobalteus</taxonomicName>
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<taxonomicNameLabel pageId="2" pageNumber="117">sp. n.</taxonomicNameLabel>
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Figs 2-6
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</paragraph>
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</subSubSection>
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<subSubSection pageId="2" pageNumber="117" type="material examined">
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<paragraph pageId="2" pageNumber="117">Material examined.</paragraph>
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<paragraph pageId="2" pageNumber="117">
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Holotype: CBM−ZW 1088, Haneda, Tokyo Bay, St. L3e-2-1 (
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="35.527832">35.52783203°N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="139.7885">139.7884979°E</geoCoordinate>
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, sandy mud bottom, incomplete, collected May 2012. Paratypes (six specimens): CBM-ZW 1089, Haneda, Tokyo Bay, St. L4e-1-1,
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="35.5295">35.52949905°N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="139.78366">139.7836609°E</geoCoordinate>
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, incomplete; mounted on SEM stub, collected spring 2007; CBM-ZW 1090, Haneda, Tokyo Bay, St. L2b-2,
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="35.52532">35.52531815°N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="139.79318">139.7931824°E</geoCoordinate>
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, sandy-mud bottom, 5 m depth, incomplete, some parts of body mounted on slides, remaining parts preserved in 70% ethanol, collected May 2012; CBM-ZW 1091, Haneda, Tokyo Bay, St. 07s-L4e-1-2,
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="35.5295">35.52949905°N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="139.78366">139.7836609°E</geoCoordinate>
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, sandy mud bottom, incomplete, collected spring 2007; CBM-ZW 1092, St. 07s-L4e-1-3,
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="35.5295">35.52949905°N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="139.78366">139.7836609°E</geoCoordinate>
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, sandy mud bottom, incomplete, collected spring 2007; CBM-ZW 1093, St. 07s-L4e-1-4,
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="35.5295">35.52949905°N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="139.78366">139.7836609°E</geoCoordinate>
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, incomplete, collected spring 2007; CBM-ZW 1094, Haneda, Tokyo Bay, St. L4e-1-2, sandy mud bottom, incomplete, collected May 2012.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="4" lastPageNumber="119" pageId="2" pageNumber="117" type="description">
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<paragraph pageId="2" pageNumber="117">Description.</paragraph>
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<paragraph pageId="2" pageNumber="117">Holotype, anterior fragment with 73 segments; 18.0 mm in length; 0.51 mm in maximum width. Body color white in ethanol. Epithelium smooth. Nephridiopores lacking. Branchiae absent. All segments cylindrical. Sex uncertain.</paragraph>
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<paragraph pageId="2" pageNumber="117">Prostomium (Fig. 2A) conical, with short palpode; eversible proboscis with numerous minute papillae. Peristomium twice as long as chaetiger 1, without eyespots, achaetigerous.</paragraph>
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<caption pageId="2" pageNumber="117">
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<paragraph pageId="2" pageNumber="117">
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Figure 2.
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="2" pageNumber="117" phylum="Annelida" rank="species" species="duobalteus">Mediomastus duobalteus</taxonomicName>
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sp. n., holotype, CBM-ZW 1088. A Anterior end of body, left lateral view B abdominal segments, left lateral view.
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</paragraph>
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</caption>
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<paragraph lastPageId="4" lastPageNumber="119" pageId="3" pageNumber="118">
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<pageBreakToken pageId="3" pageNumber="118" start="start">Capillary</pageBreakToken>
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chaetae unilimbate, with narrow wing (Figs 3A, 4A), present on chaetigers 1-4; noto- and neurochaetae each 8-12 in number per fascicle (Fig. 3A). Chaetigers 5-10 with hooded hooks, but without paddle-like chaetae. Notopodial hooded
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<pageBreakToken pageId="4" pageNumber="119" start="start">hooks</pageBreakToken>
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(Figs 3B, 4B) with short, stout fang and 3 fine teeth (Fig. 4B); hood with opening (Fig. 3B); shaft without constriction (Fig. 4B); shoulder indistinct (Fig. 4B); 6-10 hooks per fascicle. Neuropodial hooded hooks (Figs 3C, 4C) with short, stout fang and 3 fine teeth (Fig. 4C); hood with small opening (Fig. 3C); shaft without constriction (Fig. 4C); shoulder indistinct (Fig. 4C); 5-10 hooks per fascicle (Fig. 4C).
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</paragraph>
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<caption pageId="4" pageNumber="119">
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<paragraph pageId="4" pageNumber="119">
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Figure 3.
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="4" pageNumber="119" phylum="Annelida" rank="species" species="duobalteus">Mediomastus duobalteus</taxonomicName>
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sp. n., paratype, CBM-ZW 1089, SEM images. A Capillary chaetae on segment 3 B notopodial hooded hooks on segment 6 C neuropodial hooded hooks on segment 6 D notopodial hooded hooks on segment 13.
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</paragraph>
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</caption>
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<caption pageId="4" pageNumber="119">
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<paragraph pageId="4" pageNumber="119">
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Figure 4.
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="4" pageNumber="119" phylum="Annelida" rank="species" species="duobalteus">Mediomastus duobalteus</taxonomicName>
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sp. n., paratype, CBM-ZW 1090. A Capillary chaeta from segment 2 B notopodial hooded hook from segment 6 C neuropodial hooded hook from segment 6 D notopodial hooded hook from segment 20.
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</paragraph>
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</caption>
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<paragraph pageId="4" pageNumber="119">Abdominal segments twice as long as wide (Fig. 2B); with hooded hooks only. Hooded hooks (Figs 3D, 4D) with stout, pointed fang and 3 coarse teeth (Fig. 4D); hood with opening (Fig. 3D); shaft without constriction (Fig. 4D); shoulder indistinct; 2-6 hooks per fascicle.</paragraph>
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<paragraph pageId="4" pageNumber="119">Transition from thorax to abdomen marked by change in shape of hooded hooks; hooded hooks in thorax have small fang with fine, small teeth (Fig. 4B, C), while those in abdomen have stout, pointed fang; coarse and large teeth (Fig. 4D).</paragraph>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="119" type="methyl-green staining">
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<paragraph pageId="4" pageNumber="119">Methyl-green staining.</paragraph>
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<paragraph pageId="4" pageNumber="119">Among seven specimens observed, methyl-green staining resulted in three patterns (Fig. 5). All patterns showed two bands of numerous, dense, minute spots: one band on segments 2 and 3, or 3 and 4; the other extending from segments 8 or 10 to segment 11. Figure 6 shows a stained worm having the pattern diagrammed in Fig. 5C.</paragraph>
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<caption pageId="4" pageNumber="119">
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<paragraph pageId="4" pageNumber="119">
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Figure 5. Diagram showing the three methyl-green staining patterns observed in the thorax (consisting of 11 segments) among seven specimens of
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="4" pageNumber="119" phylum="Annelida" rank="species" species="duobalteus">Mediomastus duobalteus</taxonomicName>
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sp. n. A Paratype, CBM-ZW 1089 B holotype, CBM-ZW 1088 C paratype, CBM-ZW 1094.
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</paragraph>
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</caption>
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<caption pageId="4" pageNumber="119">
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<paragraph pageId="4" pageNumber="119">
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Figure 6. Photograph of the thorax of
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="4" pageNumber="119" phylum="Annelida" rank="species" species="duobalteus">Mediomastus duobalteus</taxonomicName>
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sp. n., holotype, CBM-ZW 1088, showing the methyl-green staining pattern, with the segment numbers and segmental boundaries labeled.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="4" pageNumber="119" type="etymology">
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<paragraph pageId="4" pageNumber="119">Etymology.</paragraph>
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<paragraph pageId="4" pageNumber="119">
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The specific name is a noun in the nominative singular, from the Latin numeral duo (
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<normalizedToken originalValue="“two”">"two"</normalizedToken>
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) and the Latin noun balteus (
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<normalizedToken originalValue="“belt”">"belt"</normalizedToken>
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), referring to the
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<normalizedToken originalValue="species’">species'</normalizedToken>
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diagnostic staining pattern, in which the staining pattern is two belt-like bands.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="5" lastPageNumber="120" pageId="4" pageNumber="119" type="remarks">
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<paragraph pageId="4" pageNumber="119">Remarks.</paragraph>
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<paragraph lastPageId="5" lastPageNumber="120" pageId="4" pageNumber="119">
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Among 14 congeners,
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="5" pageNumber="120" phylum="Annelida" rank="species" species="duobalteus">
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<pageBreakToken pageId="5" pageNumber="120" start="start">Mediomastus</pageBreakToken>
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duobalteus
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</taxonomicName>
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most closely resembles
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus warrenae" pageId="5" pageNumber="120" phylum="Annelida" rank="species" species="warrenae">Mediomastus warrenae</taxonomicName>
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, but differs from the latter in the staining pattern with methyl green (segments 5 and 6 lack spots in
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="5" pageNumber="120" phylum="Annelida" rank="species" species="duobalteus">Mediomastus duobalteus</taxonomicName>
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but are darkly stained post-chaetally in
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus warrenae" pageId="5" pageNumber="120" phylum="Annelida" rank="species" species="warrenae">Mediomastus warrenae</taxonomicName>
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), the shape of the thoracic capillary chaetae (unilimbate in
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="5" pageNumber="120" phylum="Annelida" rank="species" species="duobalteus">Mediomastus duobalteus</taxonomicName>
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vs. bilimbate in
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus warrenae" pageId="5" pageNumber="120" phylum="Annelida" rank="species" species="warrenae">Mediomastus warrenae</taxonomicName>
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), and the shape of the abdominal hooded hooks (constriction absent in
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus duobalteus" pageId="5" pageNumber="120" phylum="Annelida" rank="species" species="duobalteus">Mediomastus duobalteus</taxonomicName>
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but present in
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<taxonomicName class="Polychaeta" family="Capitellidae" genus="Mediomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mediomastus warrenae" pageId="5" pageNumber="120" phylum="Annelida" rank="species" species="warrenae">Mediomastus warrenae</taxonomicName>
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).
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |