201 lines
16 KiB
XML
201 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="A46F266ED3C4C0E8440C45AFE1F477D2" docLanguage="en" docName="ZooKeys 163: 13-55" docOrigin="ZooKeys 163" docSource="http://dx.doi.org/10.3897/zookeys.163.2003" docTitle="Leucothoe nathani White & Reimer, 2012, sp. n." docType="treatment" docVersion="4" lastPageNumber="26" masterDocId="FFFDB4372D483E07FFC5FF96FFDA8A34" masterDocTitle="Commensal Leucothoidae (Crustacea, Amphipoda) of the Ryukyu Archipelago, Japan. Part I: ascidian-dwellers" masterLastPageNumber="55" masterPageNumber="13" pageNumber="24" 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="152032980" LSID="urn:lsid:zoobank.org:act:ECB34479-0D69-4027-8604-CE98C89F809B" httpUri="http://treatment.plazi.org/id/A46F266ED3C4C0E8440C45AFE1F477D2" lastPageId="13" lastPageNumber="26" pageId="11" pageNumber="24">
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<subSubSection pageId="11" pageNumber="24" type="nomenclature">
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<paragraph pageId="11" pageNumber="24">
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<taxonomicName LSID="urn:lsid:zoobank.org:act:ECB34479-0D69-4027-8604-CE98C89F809B" class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe nathani" order="Amphipoda" pageId="11" pageNumber="24" phylum="Arthropoda" rank="species" species="nathani">Leucothoe nathani</taxonomicName>
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<taxonomicNameLabel pageId="11" pageNumber="24">sp. n.</taxonomicNameLabel>
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Figs 78
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</paragraph>
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</subSubSection>
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<subSubSection pageId="11" pageNumber="24" type="type material">
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<paragraph pageId="11" pageNumber="24">Type material.</paragraph>
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<paragraph pageId="11" pageNumber="24">
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Holotype male, 4.8 mm, RUMF-ZC-1663, Mizugama reef wall (
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<geoCoordinate direction="north" orientation="latitude" precision="15" value="26.359722">26°21'35"N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="15" value="127.73944">127°44'22"E</geoCoordinate>
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), in branchial chamber of solitary ascidian,
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<taxonomicName class="Hexanauplia" family="Aegisthidae" genus="Herdmania" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Herdmania" order="Harpacticoida" pageId="11" pageNumber="24" phylum="Arthropoda" rank="genus">Herdmania</taxonomicName>
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of Lahille, 1888, 7-9 m, N.S. White col., 26 February 2011 (KNWOkinawa34J). Paratype female, 6.3 mm, RUMF-ZC-1664, same station data as holotype.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="11" pageNumber="24" type="type locality">
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<paragraph pageId="11" pageNumber="24">Type locality.</paragraph>
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<paragraph pageId="11" pageNumber="24">
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Mizugama, Okinawa, Japan (
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<geoCoordinate direction="north" orientation="latitude" precision="15" value="26.359722">26°21'35"N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="15" value="127.73944">127°44'22"E</geoCoordinate>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="11" pageNumber="24" type="additional material examined">
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<paragraph pageId="11" pageNumber="24">Additional Material Examined.</paragraph>
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<paragraph pageId="11" pageNumber="24">2 specimens, RUMF-ZC-1665, KNWOkinawa34J; 1 specimen, KNWOkinawa42G.</paragraph>
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</subSubSection>
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<subSubSection pageId="11" pageNumber="24" type="diagnosis (male)">
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<paragraph pageId="11" pageNumber="24">Diagnosis (male).</paragraph>
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<paragraph pageId="11" pageNumber="24">
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Maxilla 1 palp 1-articulate, margins constricted. Maxilliped outer plate reaching 0.4
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<normalizedToken originalValue="×">x</normalizedToken>
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length of palp article 1. Male gnathopod 1 basis posterodistally expanded; carpus basally inflated; dactylus very short, reaching 0.1
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<normalizedToken originalValue="×">x</normalizedToken>
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propodus length. Gnathopod 2 propodus mediofacial setal row very robust with tufts of setae, palm with 4 long tubercles and 1 large indentation.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="13" lastPageNumber="26" pageId="11" pageNumber="24" type="description (male)">
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<paragraph pageId="11" pageNumber="24">Description (male).</paragraph>
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<paragraph pageId="11" pageNumber="24">
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Head. Anterior margin rounded, anterodistal margin evenly rounded; ventral cephalic keel anterior margin excavate, anteroventral margin subquadrate, ventral margin straight; 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 6-articulate, peduncle article 1 width less than 2
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<normalizedToken originalValue="×">x</normalizedToken>
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article 2, accessory flagellum absent, aesthetascs present. Antenna 2 0.3
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<normalizedToken originalValue="×">x</normalizedToken>
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body length, subequal in length with antenna 1, flagellum 5-articulate. Mandibular palp ratio of articles 1-3, 1.0: 3.8: 1.8, article 2 with 6 setae, article 3 with 2 distal setae, incisors strongly dentate; left mandible with 10 raker spines, lacinia mobilis large, strongly toothed; right mandible with 9 raker spines, lacinia mobilis small, weakly dentate. Upper lip asymmetrically lobate, anterior margin setose. Lower lip inner lobes fused, bare; outer lobes with moderate gape, anterior margins setose. Maxilla 1 palp 1-articulate, margins constricted, with 4 distal setae; outer plate with 6 distal robust setae and 3 distal slender setae. Maxilla 2 inner plate with 3 short distal robust setae, 3 distal slender setae, and facial setae; outer plate 3 distal serrate robust setae, 7 marginal slender setae, and facial setae. Maxilliped inner plates distal margin with v-shaped indentation, with short robust setae and long setae, with facial setae; outer plate inner margin smooth, reaching 0.4
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<normalizedToken originalValue="×">x</normalizedToken>
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length of palp article 1, with 6 distal setae and 1 distal robust seta, facial setae present; palp article 4 elongate, distally acute.
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</paragraph>
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<paragraph lastPageId="13" lastPageNumber="26" pageId="12" pageNumber="25">
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<pageBreakToken pageId="12" pageNumber="25" start="start">Pereon</pageBreakToken>
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. Coxae 1-4 relative widths 1.0: 1.0: 0.8: 1.4. Gnathopod 1 coxa smooth, with tiny marginal setae, anterodistal corner produced, subtriangular, distal margin straight, posterior margin excavate, facial setae absent; basis posterodistally expanded, anterior margin with 5 short setae, posterior margin bare; ischium bare; carpus basally
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<pageBreakToken pageId="13" pageNumber="26" start="start">inflated</pageBreakToken>
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, length 7.6
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<normalizedToken originalValue="×">x</normalizedToken>
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width, proximal margin smooth, distal margin with 4 medium setae; propodus straight, palm smooth with 10 distal setae; dactylus smooth, reaching 0.1
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<normalizedToken originalValue="×">x</normalizedToken>
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propodus length. Gnathopod 2 coxa equally as long as broad, subequal in length with coxa 3, smooth, with tiny marginal setae, anterodistally rounded, distal margin straight, posterior margin straight, facial setae absent; basis distally expanded, stout, with 3 small anterodistal tubercles, anterior margin with 9 short-medium length setae, posterior margin with 1 seta; ischium with 2 posterodistal setae; carpus 0.4
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<normalizedToken originalValue="×">x</normalizedToken>
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propodus length, straight, distally tapered, anterior margin dentate; propodus with 1 mediofacial setal row displaced to palm, 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 recurved, proximal margin smooth, bare, anterior margin distally acute, reaching 0.5
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<normalizedToken originalValue="×">x</normalizedToken>
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propodus length. Pereopod 3 coxa length 1.4
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<normalizedToken originalValue="×">x</normalizedToken>
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width, anterodistal corner overriding distal face of coxa 2, not extending below it, smooth, bare, anterior margin straight, distal margin oblique, posterior margin straight, facial setae absent. Pereopod 4 coxa smooth, bare, anterior margin produced, distal margin evenly rounded, posterior margin tapered, facial setae absent. Pereopod 5 coxa facial seta present, pereopods 6-7 coxae facial setae absent; bases oval, width length ratios 1:1.6, 1:1.6, 1:1.5, posterior margins smooth, setose.
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</paragraph>
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<paragraph pageId="13" pageNumber="26">
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Pleon. Epimera 1-2 with ventral setae, epimeron 3 bare; epimeron 3 posteroventral corner rounded. Uropods 1-3 relative lengths 1.0: 0.6: 0.8; inner and outer rami lined with short marginal setae. Uropod 1 peduncle 1.1
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<normalizedToken originalValue="×">x</normalizedToken>
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inner ramus length; outer ramus subequal in length with inner ramus; inner ramus with 6 robust seate; outer ramus with 3 robust setae. Uropod 2 peduncle 0.7
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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 ramus with 1 robust seta; outer ramus with 3 robust seate. Uropod 3 peduncle 1.4
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<normalizedToken originalValue="×">x</normalizedToken>
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inner ramus length; outer ramus subequal in length with inner ramus; inner and outer rami each with 1 robust seta. Telson 2.2
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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="13" pageNumber="26" type="female (sexually dimorphic characters)">
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<paragraph pageId="13" pageNumber="26">Female (sexually dimorphic characters).</paragraph>
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<paragraph pageId="13" pageNumber="26">Gnathopod 1 basis anterior margin with 15 short setae; carpus linear, distal margin with 7 longer setae. Gnathopod 2 basis anterior margin with 21 short setae; carpus anterior margin smooth; dactylus with two proximal setae.</paragraph>
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<caption pageId="13" pageNumber="26">
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<paragraph pageId="13" pageNumber="26">
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Figure 7.
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe nathani" order="Amphipoda" pageId="13" pageNumber="26" phylum="Arthropoda" rank="species" species="nathani">Leucothoe nathani</taxonomicName>
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sp. n., holotype male, 4.8 mm, RUMF-ZC-1663.
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</paragraph>
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</caption>
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<caption pageId="13" pageNumber="26">
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<paragraph pageId="13" pageNumber="26">
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Figure 8.
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe nathani" order="Amphipoda" pageId="13" pageNumber="26" phylum="Arthropoda" rank="species" species="nathani">Leucothoe nathani</taxonomicName>
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sp. n., holotype male, 4.8 mm, RUMF-ZC-1663; paratype female, 6.3 mm, RUMF-ZC-1664.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="13" pageNumber="26" type="etymology">
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<paragraph pageId="13" pageNumber="26">Etymology.</paragraph>
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<paragraph pageId="13" pageNumber="26">Named for Nathan Stuart White, amphipod collector extraordinaire, who collected the type specimens of this species. Nathan has provided tremendous support and assistance throughout all sampling efforts in the Ryukyu Archipelago.</paragraph>
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</subSubSection>
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<subSubSection pageId="13" pageNumber="26" type="ecology">
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<paragraph pageId="13" pageNumber="26">Ecology.</paragraph>
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<paragraph pageId="13" pageNumber="26">
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In branchial chamber of solitary ascidian,
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<taxonomicName class="Hexanauplia" family="Aegisthidae" genus="Herdmania" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Herdmania" order="Harpacticoida" pageId="13" pageNumber="26" phylum="Arthropoda" rank="genus">Herdmania</taxonomicName>
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(Fig. 18A) and compound ascidian,
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<taxonomicName class="Ascidiacea" family="Clavelinidae" genus="Clavelina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Clavelina" order="Aplousobranchia" pageId="13" pageNumber="26" phylum="Chordata" rank="genus">Clavelina</taxonomicName>
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of Savigny, 1816 (Fig. 18C).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="13" pageNumber="26" type="relationships">
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<paragraph pageId="13" pageNumber="26">Relationships.</paragraph>
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<paragraph pageId="13" pageNumber="26">
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe nathani" order="Amphipoda" pageId="13" pageNumber="26" phylum="Arthropoda" rank="species" species="nathani">Leucothoe nathani</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="13" pageNumber="26" phylum="Arthropoda" rank="species" species="nagatai">Leucothoe nagatai</taxonomicName>
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in having short antennae, an elongate maxilliped outer plate inner margin, a short gnathopod 1 dactyl, a heavily setose gnathopod 2 propodus medial surface, and narrow pereopod 5-7 bases. This species differs in having a smooth maxilliped outer plate inner margin, slenderner gnathopod 1 carpus (length 7.6
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<normalizedToken originalValue="×">x</normalizedToken>
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width compared to length 6.6
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<normalizedToken originalValue="×">x</normalizedToken>
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width in
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe nagatai" order="Amphipoda" pageId="13" pageNumber="26" phylum="Arthropoda" rank="species" species="nagatai">Leucothoe nagatai</taxonomicName>
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), and a longer telson (2.2
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<normalizedToken originalValue="×">x</normalizedToken>
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longer than wide compared to 1.8
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<normalizedToken originalValue="×">x</normalizedToken>
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longer than wide in
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe nagatai" order="Amphipoda" pageId="13" pageNumber="26" phylum="Arthropoda" rank="species" species="nagatai">Leucothoe nagatai</taxonomicName>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="13" pageNumber="26" type="remarks">
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<paragraph pageId="13" pageNumber="26">Remarks.</paragraph>
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<paragraph pageId="13" pageNumber="26">
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<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe nathani" order="Amphipoda" pageId="13" pageNumber="26" phylum="Arthropoda" rank="species" species="nathani">Leucothoe nathani</taxonomicName>
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is orange in color with robust dark orange stripes along pereonites (Fig. 17D). This species has been collected from only one location in February and April, two of the coldest months on
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<normalizedToken originalValue="Okinawa–jima">Okinawa-jima</normalizedToken>
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Island.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="13" pageNumber="26" type="distribution">
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<paragraph pageId="13" pageNumber="26">Distribution.</paragraph>
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<paragraph pageId="13" pageNumber="26">
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East China Sea:
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<normalizedToken originalValue="Okinawa–jima">Okinawa-jima</normalizedToken>
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Island, Japan.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |