208 lines
16 KiB
XML
208 lines
16 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.163.2003" ID-GBIF-Dataset="daef9891-760b-4f45-a77a-53459f6a2162" ID-PMC="PMC3253665" ID-Pensoft-Pub="1313-2970-163-13" ID-PubMed="22303128" ModsDocAuthor="" ModsDocDate="2012" ModsDocID="1313-2970-163-13" ModsDocOrigin="ZooKeys 163" ModsDocTitle="Commensal Leucothoidae (Crustacea, Amphipoda) of the Ryukyu Archipelago, Japan. Part I: ascidian-dwellers" checkinTime="1451249396492" checkinUser="pensoft" docAuthor="White, Kristine N. & Reimer, James Davis" docDate="2012" docId="401E61F7139F39220A9225BE1636D263" docLanguage="en" docName="ZooKeys 163: 13-55" docOrigin="ZooKeys 163" docSource="http://dx.doi.org/10.3897/zookeys.163.2003" docTitle="Leucothoe obuchii White & Reimer, 2012, sp. n." docType="treatment" docVersion="4" lastPageNumber="30" masterDocId="FFFDB4372D483E07FFC5FF96FFDA8A34" masterDocTitle="Commensal Leucothoidae (Crustacea, Amphipoda) of the Ryukyu Archipelago, Japan. Part I: ascidian-dwellers" masterLastPageNumber="55" masterPageNumber="13" pageNumber="27" updateTime="1668153144330" 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>Commensal Leucothoidae (Crustacea, Amphipoda) of the Ryukyu Archipelago, Japan. Part I: ascidian-dwellers</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>White, Kristine N.</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>Reimer, James Davis</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>2012</mods:date>
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<mods:detail type="volume">
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<mods:number>163</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>13</mods:start>
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<mods:end>55</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.163.2003</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.163.2003</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-163-13</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152032983" LSID="urn:lsid:zoobank.org:act:590FEF5F-1261-4F6E-B4F5-07B7940CD81B" httpUri="http://treatment.plazi.org/id/401E61F7139F39220A9225BE1636D263" lastPageId="17" lastPageNumber="30" pageId="14" pageNumber="27">
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<subSubSection pageId="14" pageNumber="27" type="nomenclature">
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<paragraph pageId="14" pageNumber="27">
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<taxonomicName LSID="urn:lsid:zoobank.org:act:590FEF5F-1261-4F6E-B4F5-07B7940CD81B" class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe obuchii" order="Amphipoda" pageId="14" pageNumber="27" phylum="Arthropoda" rank="species" species="obuchii">
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<pageBreakToken pageId="14" pageNumber="27" start="start">Leucothoe</pageBreakToken>
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obuchii
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</taxonomicName>
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<taxonomicNameLabel pageId="14" pageNumber="27">sp. n.</taxonomicNameLabel>
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Figs 910
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</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="27" type="type material">
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<paragraph pageId="14" pageNumber="27">Type material.</paragraph>
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<paragraph pageId="14" pageNumber="27">
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Holotype male, 4 mm, RUMF-ZC-1666,
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<normalizedToken originalValue="Tettou–mae–oki">Tettou-mae-oki</normalizedToken>
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,
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<normalizedToken originalValue="Oura–wan">Oura-wan</normalizedToken>
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Bay (
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<geoCoordinate direction="north" orientation="latitude" precision="15" value="26.545277">26°32'43"N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="15" value="128.04889">128°02'56"E</geoCoordinate>
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), muddy sand slope, in branchial chamber of solitary ascidian
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<taxonomicName class="Ascidiacea" family="Diazonidae" genus="Rhopalaea" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Rhopalaea" order="Aplousobranchia" pageId="14" pageNumber="27" phylum="Chordata" rank="genus">Rhopalaea</taxonomicName>
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of Phillippi, 1843 (clear with black and yellow lines), 24 m, M. Obuchi, col., 4 March 2011 (KNWOkinawa37A). Paratype female, 3.8 mm, RUMF-ZC-1667, same station data as holotype.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="27" type="type locality">
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<paragraph pageId="14" pageNumber="27">Type locality.</paragraph>
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<paragraph pageId="14" pageNumber="27">
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<normalizedToken originalValue="Tettou–mae–oki">Tettou-mae-oki</normalizedToken>
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,
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<normalizedToken originalValue="Oura–wan">Oura-wan</normalizedToken>
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Bay, Okinawa, Japan (
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<geoCoordinate direction="north" orientation="latitude" precision="15" value="26.545277">26°32'43"N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="15" value="128.04889">128°02'56"E</geoCoordinate>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="27" type="additional material examined">
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<paragraph pageId="14" pageNumber="27">additional material examined.</paragraph>
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<paragraph pageId="14" pageNumber="27">5 specimens, RUMF-ZC-1668, KNWAmami3F; 2 specimens, NSMT-Cr21817, KNWOkinawa48A; 2 specimens, NSMT -Cr21818, KNWYaku3K; 1 specimen, NSMT -Cr21819, KNWYaku5N.</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="27" type="diagnosis (male)">
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<paragraph pageId="14" pageNumber="27">Diagnosis (male).</paragraph>
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<paragraph pageId="14" pageNumber="27">
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Maxilla 1 palp 1-articulate. Maxilliped outer plate inner margin tuberculate, reaching 0.7
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<normalizedToken originalValue="×">x</normalizedToken>
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palp article 1. Gnathopod 1 basis centrally widened; carpus with 4 long distal setae; propodus inflated; dactylus short, reaching 0.2
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<normalizedToken originalValue="×">x</normalizedToken>
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propodus length. Pereopods 5-7 bases narrow, oval; epimeron 3 posteroventral margin with small sinus.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="17" lastPageNumber="30" pageId="14" pageNumber="27" type="description (male)">
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<paragraph pageId="14" pageNumber="27">Description (male).</paragraph>
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<paragraph pageId="14" pageNumber="27">
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Head. Anterior margin rounded, anterodistal margin evenly rounded; ventral cephalic keel anterior margin transverse, anteroventral margin rounded, ventral margin excavate; eyes with more than 10 ommatidia, oval. Antenna 1 0.3
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<normalizedToken originalValue="×">x</normalizedToken>
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body length, flagellum 7-articulate, peduncle article 1 width less than 2
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<normalizedToken originalValue="×">x</normalizedToken>
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article 2, accessory flagellum 1-articulate, aesthetascs present. Antenna 2 0.2
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<normalizedToken originalValue="×">x</normalizedToken>
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body length, shorter than antenna 1, flagellum 3-articulate. Mandibular palp ratio of articles 1-3 1.0: 2.5: 1.2, article 2 and 3 each with 2 distal setae, incisors strongly dentate; left mandible with 7 raker spines, lacinia mobilis large, strongly toothed; right mandible with 8 raker spines, lacinia mobilis small, weakly dentate. Upper lip asymmetrically lobate, anterior margin setose. Lower lip inner lobes fused, setose; outer lobes with moderate gape, anterior margins setose, with facial setae. Maxilla 1 palp 1-articulate with 3 distal setae; outer plate with 6 distal robust setae and 3 distal slender setae. Maxilla 2 inner plate with 4 distal and 4 marginal setae; outer plate with 5 robust distal setae and 4 marginal setae. Maxilliped inner plates distal margin with v-shaped indentation, with short robust setae; outer plate inner margin tuberculate, reaching 0.7
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<normalizedToken originalValue="×">x</normalizedToken>
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palp article 1, with 1 simple distal seta; palp article 4 subequal in length with article 3, distally acute.
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</paragraph>
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<paragraph lastPageId="17" lastPageNumber="30" pageId="14" pageNumber="27">
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Pereon. Coxae 1-4 relative widths 1.0: 1.5: 1.2: 1.8. Gnathopod 1 coxa smooth, bare, anterodistal corner produced, subquadrate with cusp, distal margin straight, posterior margin excavate, facial setae absent; basis centrally widened, anterior margin with 2 short setae, posterior margin with 2 short setae; ischium bare; carpus linear, length 7.1
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<normalizedToken originalValue="×">x</normalizedToken>
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width, proximal margin dentate, distal margin with 4 long setae; propodus curved, slightly inflated, palm smooth with 3-5 distal setae; dactylus smooth, reaching 0.2
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<normalizedToken originalValue="×">x</normalizedToken>
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propodus length. Gnathopod 2 coxa broader than long, subequal to
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<pageBreakToken pageId="15" pageNumber="28" start="start">coxa</pageBreakToken>
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3, smooth, bare, anterodistally rounded, distal margin straight, posterior margin straight, facial setae absent; basis distally expanded, anterior margin with 4 setae, posterior margin bare; ischium bare; carpus 0.4
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<normalizedToken originalValue="×">x</normalizedToken>
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propodus length, straight, distally tapered, anterior margin with indentation; propodus with 1 mediofacial setal row
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<pageBreakToken pageId="16" pageNumber="29" start="start">displaced</pageBreakToken>
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below midline, reaching 0.7
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<normalizedToken originalValue="×">x</normalizedToken>
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propodus length, with 1 row of submarginal setae, posterior margin smooth, palm convex with 4 major tubercles; dactylus curved, proximal margin smooth, bare, anterior margin distally acute, reaching 0.4
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<normalizedToken originalValue="×">x</normalizedToken>
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propodus length. Pereopod 3 coxa length 1.2
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<normalizedToken originalValue="×">x</normalizedToken>
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width, anterodistal corner overriding
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<pageBreakToken pageId="17" pageNumber="30" start="start">distal</pageBreakToken>
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face of coxa 2, extending below it, smooth, bare, anterior margin expanded, distal margin straight, posterior margin straight, facial setae absent. Pereopod 4 coxa smooth, bare, anterior margin tapered with cusp, distal margin evenly rounded, posterior margin tapered, facial setae absent. Pereopods 5-7 coxae facial setae absent; bases oval, width length ratios 1: 1.5, 1: 1.5, 1:1.5, posterior margins smooth, setose.
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</paragraph>
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<paragraph pageId="17" pageNumber="30">
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Pleon. Epimeron 1 bare; epimera 2-3 with ventral setae; epimeron 3 posteroventral corner slightly sinuous, rounded. Uropods 1-3 relative lengths 1.0: 0.7: 0.7; inner and outer rami lined with short marginal setae. Uropod 1 peduncle and outer ramus subequal in length with inner ramus; inner ramus with 1 robust seta; outer ramus with 3 robust setae. Uropod 2 peduncle subequal in length with inner ramus; outer ramus 0.8
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<normalizedToken originalValue="×">x</normalizedToken>
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inner ramus length; inner ramus with 1 robust seta; outer ramus with 2 robust setae. Uropod 3 peduncle 1.4
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<normalizedToken originalValue="×">x</normalizedToken>
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inner ramus length; outer ramus 0.8
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<normalizedToken originalValue="×">x</normalizedToken>
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inner ramus length; inner and outer rami without robust setae. Telson 1.9
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<normalizedToken originalValue="×">x</normalizedToken>
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longer than wide, apex weakly tridentate.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="30" type="female (sexually dimorphic characters)">
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<paragraph pageId="17" pageNumber="30">Female (sexually dimorphic characters).</paragraph>
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<paragraph pageId="17" pageNumber="30">Gnathopod 1 basis anterior margin with 4 setae, posterior margin with 1 posterodistal seta. Gnathopod 2 basis anterior margin with 1 seta; carpus anterior margin smooth.</paragraph>
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<caption pageId="17" pageNumber="30">
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<paragraph pageId="17" pageNumber="30">
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Figure 9.
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe obuchii" order="Amphipoda" pageId="17" pageNumber="30" phylum="Arthropoda" rank="species" species="obuchii">Leucothoe obuchii</taxonomicName>
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sp. n., holotype male, 4.0 mm, RUMF-ZC-1666.
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</paragraph>
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</caption>
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<caption pageId="17" pageNumber="30">
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<paragraph pageId="17" pageNumber="30">
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Figure 10.
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe obuchii" order="Amphipoda" pageId="17" pageNumber="30" phylum="Arthropoda" rank="species" species="obuchii">Leucothoe obuchii</taxonomicName>
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sp. n., holotype male, 4.0 mm, RUMF-ZC-1666; paratype female, 3.8 mm, RUMF-ZC-1667.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="30" type="etymology">
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<paragraph pageId="17" pageNumber="30">Etymology.</paragraph>
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<paragraph pageId="17" pageNumber="30">
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Named for
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<normalizedToken originalValue="“General”">"General"</normalizedToken>
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Masami Obuchi, who collected the type specimens of this species. Dr. Obuchi has provided invaluable sampling and logistical support for this research in the Ryukyu Archipelago.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="30" type="ecology">
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<paragraph pageId="17" pageNumber="30">Ecology.</paragraph>
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<paragraph pageId="17" pageNumber="30">
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In branchial chamber of solitary ascidians,
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<taxonomicName class="Ascidiacea" family="Diazonidae" genus="Rhopalaea" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Rhopalaea" order="Aplousobranchia" pageId="17" pageNumber="30" phylum="Chordata" rank="genus">Rhopalaea</taxonomicName>
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(Fig. 18B) and
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<taxonomicName class="Ascidiacea" family="Diazonidae" genus="Rhopalaea" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Rhopalaea circula" order="Aplousobranchia" pageId="17" pageNumber="30" phylum="Chordata" rank="species" species="circula">Rhopalaea circula</taxonomicName>
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(Fig. 18F); and coral rubble.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="30" type="relationships">
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<paragraph pageId="17" pageNumber="30">Relationships.</paragraph>
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<paragraph pageId="17" pageNumber="30">
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe obuchii" order="Amphipoda" pageId="17" pageNumber="30" phylum="Arthropoda" rank="species" species="obuchii">Leucothoe obuchii</taxonomicName>
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is similar to
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe nagatai" order="Amphipoda" pageId="17" pageNumber="30" phylum="Arthropoda" rank="species" species="nagatai">Leucothoe nagatai</taxonomicName>
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in having short antennae, an elongate tuberculate maxilliped outer plate inner margin, a short gnathopod 1 dactyl, and narrow pereopod 5-7 bases. This species differs in having a much less setose gnathopod 2 propodus medial surface.
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe nagatai" order="Amphipoda" pageId="17" pageNumber="30" phylum="Arthropoda" rank="species" species="nagatai">Leucothoe nagatai</taxonomicName>
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has robust tufts of mediofacial setae covering most of the proximal surface of the propodus compared to single mediofacial and submarginal setal rows in
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe obuchii" order="Amphipoda" pageId="17" pageNumber="30" phylum="Arthropoda" rank="species" species="obuchii">Leucothoe obuchii</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="30" type="remarks">
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<paragraph pageId="17" pageNumber="30">Remarks.</paragraph>
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<paragraph pageId="17" pageNumber="30">
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe obuchii" order="Amphipoda" pageId="17" pageNumber="30" phylum="Arthropoda" rank="species" species="obuchii">Leucothoe obuchii</taxonomicName>
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is opaque ivory in color (Fig. 17E). In most collections of this species there was one specimen at the base of the branchial chamber of each ascidian collected. Rarely, there were one large and one small amphipod living together.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="30" type="distribution">
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<paragraph pageId="17" pageNumber="30">Distribution.</paragraph>
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<paragraph pageId="17" pageNumber="30">
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East China Sea:
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<normalizedToken originalValue="Okinawa–jima">Okinawa-jima</normalizedToken>
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Island (Okinawa), Tokunoshima Island,
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<normalizedToken originalValue="Amami–oshima">Amami-oshima</normalizedToken>
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Island, and Yakushima Island (all Kagoshima), Japan.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |