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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.166.2313" ID-GBIF-Dataset="9771bfcf-4c41-4034-9b13-12b5db29d5c8" ID-PMC="PMC3272635" ID-Pensoft-Pub="1313-2970-166-1" ID-PubMed="22328858" ModsDocAuthor="" ModsDocDate="2012" ModsDocID="1313-2970-166-1" ModsDocOrigin="ZooKeys 166" ModsDocTitle="Commensal Leucothoidae (Crustacea, Amphipoda) of the Ryukyu Archipelago, Japan. Part II: sponge-dwellers" checkinTime="1451249369520" checkinUser="pensoft" docAuthor="White, Kristine N. &amp; Reimer, James Davis" docDate="2012" docId="8A291019C5DE7C6B47813256AA7FB194" docLanguage="en" docName="ZooKeys 166: 1-58" docOrigin="ZooKeys 166" docSource="http://dx.doi.org/10.3897/zookeys.166.2313" docTitle="Leucothoe lecroyae White &amp; Reimer, 2012, sp. n." docType="treatment" docVersion="4" lastPageNumber="17" masterDocId="D95AFFA0FFAB5A6B44536464373AFFAC" masterDocTitle="Commensal Leucothoidae (Crustacea, Amphipoda) of the Ryukyu Archipelago, Japan. Part II: sponge-dwellers" masterLastPageNumber="58" masterPageNumber="1" pageNumber="14" updateTime="1668153192096" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Commensal Leucothoidae (Crustacea, Amphipoda) of the Ryukyu Archipelago, Japan. Part II: sponge-dwellers</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>White, Kristine N.</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Reimer, James Davis</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2012</mods:date>
<mods:detail type="volume">
<mods:number>166</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>58</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.166.2313</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.166.2313</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-166-1</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="152033125" LSID="urn:lsid:zoobank.org:act:5089CA73-CBB4-4A13-A3A2-9F1CE93749FB" httpUri="http://treatment.plazi.org/id/8A291019C5DE7C6B47813256AA7FB194" lastPageId="16" lastPageNumber="17" pageId="13" pageNumber="14">
<subSubSection pageId="13" pageNumber="14" type="nomenclature">
<paragraph pageId="13" pageNumber="14">
<taxonomicName LSID="urn:lsid:zoobank.org:act:5089CA73-CBB4-4A13-A3A2-9F1CE93749FB" class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe lecroyae" order="Amphipoda" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="lecroyae">Leucothoe lecroyae</taxonomicName>
<taxonomicNameLabel pageId="13" pageNumber="14">sp. n.</taxonomicNameLabel>
Figures 910
</paragraph>
</subSubSection>
<subSubSection pageId="13" pageNumber="14" type="type material">
<paragraph pageId="13" pageNumber="14">Type material.</paragraph>
<paragraph pageId="13" pageNumber="14">
Holotype male, 3.5 mm RUMF-ZC-1763, Kuse,
<normalizedToken originalValue="Kakeroma–jima">Kakeroma-jima</normalizedToken>
Island reef wall (
<geoCoordinate direction="north" orientation="latitude" precision="15" value="28.101389">28°06'05&quot;N</geoCoordinate>
,
<geoCoordinate direction="east" orientation="longitude" precision="15" value="129.35333">129°21'12&quot;E</geoCoordinate>
), in canals of brown sponge,
<taxonomicName class="Demospongiae" family="Ancorinidae" genus="Rhabdastrella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Rhabdastrella" order="Tetractinellida" pageId="13" pageNumber="14" phylum="Porifera" rank="genus">Rhabdastrella</taxonomicName>
of
<bibRefCitation author="Thiele, J" journalOrPublisher="Abhandlungen herausgegeben von der Senckenbergischen naturforschenden Gesellschaft" pageId="39" pageNumber="40" pagination="933 - 968" title="Kieselschwaemme von Ternate. II." volume="25" year="1903">Thiele 1903</bibRefCitation>
, 10 m, K.N. White, col., 19 March 2011 (KNWAmami2C). Paratype female, 3.3 mm RUMF-ZC-1764, same station data as holotype.
</paragraph>
</subSubSection>
<subSubSection pageId="13" pageNumber="14" type="type locality">
<paragraph pageId="13" pageNumber="14">Type locality.</paragraph>
<paragraph pageId="13" pageNumber="14">
Kuse,
<normalizedToken originalValue="Kakeroma–jima">Kakeroma-jima</normalizedToken>
Island,
<normalizedToken originalValue="Amami–oshima">Amami-oshima</normalizedToken>
Island region, Kagoshima, Japan (
<geoCoordinate direction="north" orientation="latitude" precision="15" value="28.101389">28°06'05&quot;N</geoCoordinate>
,
<geoCoordinate direction="east" orientation="longitude" precision="15" value="129.35333">129°21'12&quot;E</geoCoordinate>
).
</paragraph>
</subSubSection>
<subSubSection pageId="13" pageNumber="14" type="additional material examined">
<paragraph pageId="13" pageNumber="14">Additional material examined.</paragraph>
<paragraph pageId="13" pageNumber="14">7 specimens, NSMT-Cr 21894, KNWYaku3D; 7 specimens, RUMF-ZC-1765, KNWYaku3D; 1 specimen, RUMF-ZC-1766, KNWYaku5P; 3 specimens, NSMT-Cr 21895 KNWOkinawa44A; 1 specimen, RUMF-ZC-1767, KNWOkinawa44F; 5 specimens, NSMT-Cr 21893, KNWAmami2D; 1 male specimen, RUMF-ZC-1799, KNWAmami2C.</paragraph>
</subSubSection>
<subSubSection lastPageId="15" lastPageNumber="16" pageId="13" pageNumber="14" type="diagnosis (male)">
<paragraph pageId="13" pageNumber="14">Diagnosis (male).</paragraph>
<paragraph lastPageId="15" lastPageNumber="16" pageId="13" pageNumber="14">
Ventral cephalic keel anterior margin transverse, anteroventral margin quadrate. Eyes oval. Antennae 1 accessory flagellum 1-articulate. Right
<pageBreakToken pageId="14" pageNumber="15" start="start">mandible</pageBreakToken>
with small 2-layered lacinia mobilis. Maxilliped inner plates small with serrate robust setae; outer plate tuberculate. Gnathopod 1 coxa anterior margin serrate; carpus robust, proximal margin serrate; propodus palm serrate with triangular teeth.
<pageBreakToken pageId="15" pageNumber="16" start="start">Gnathopod</pageBreakToken>
2 carpus distally truncate; propodus with 2 mediofacial setal rows. Pereopods 5-7 coxae with facial setae; bases posteriorly serrate. Female ventral cephalic keel anteroventral margin serrate; gnathopod 1 basis posterior margin with 6 short setae; gnathopod 2 carpus distally tapered.
</paragraph>
</subSubSection>
<subSubSection lastPageId="16" lastPageNumber="17" pageId="15" pageNumber="16" type="description">
<paragraph pageId="15" pageNumber="16">Description (male).</paragraph>
<paragraph pageId="15" pageNumber="16">
Head. Anterior margin rounded, anterodistal margin evenly rounded; ventral cephalic keel anterior margin transverse, anteroventral margin quadrate, ventral margin oblique; eyes with more than 10 ommatidia, oval. Antenna 1 0.4
<normalizedToken originalValue="×">x</normalizedToken>
body length, flagellum 10+-articulate (broken), peduncle article 1 width less than 2
<normalizedToken originalValue="×">x</normalizedToken>
article 2, accessory flagellum 1-articulate. Antenna 2 0.3
<normalizedToken originalValue="×">x</normalizedToken>
body length, slightly shorter than antenna 1, flagellum 6-articulate. Mandibular palp ratio of articles 1-3 1.0: 2.8: 1.0, article 2 with 2 medium distal setae, article 3 with 2 distal setae, incisors strongly dentate; left mandible with 8 raker spines, lacinia mobilis large, strongly toothed; right mandible with 7 raker spines, with small 2-layered lacinia mobilis, strongly dentate. Upper lip asymmetrically lobate, anterior margin setose. Lower lip inner lobes fused, setose; outer lobes with moderate gape, anterior margins setose. Maxilla 1 palp 1-articulate, margins constricted and with 4 distal setae; outer plate with 7 distal robust setae and 6 short marginal setae. Maxilla 2 inner plate with 4 robust distal setae, 2 robust facial setae, and 7 slender marginal setae; outer plate with 3 robust distal setae and 3 slender distal marginal setae. Maxilliped inner plates distal margin with a v-shaped indentation, with short simple and serrate robust setae; outer plate inner margin tuberculate, reaching 0.3
<normalizedToken originalValue="×">x</normalizedToken>
palp article 1, with simple marginal setae, facial setae absent; palp article 4 subequal in length with article 3, distally acute.
</paragraph>
<paragraph pageId="15" pageNumber="16">
Pereon. Coxae 1-4 relative widths 1.0: 1.5: 1.2: 1.8. Gnathopod 1 coxa smooth, with tiny marginal setae, anterior margin serrate, anterior margin produced, rounded, distal margin straight, posterior margin excavate, facial setae absent; basis linear, anterior margin with 1 short seta, posterior margin with 2 short setae; ischium bare; carpus linear, distal length 7.1
<normalizedToken originalValue="×">x</normalizedToken>
width, proximal margin serrate, distal margin bare; propodus straight, palm serrate with 10 distal setae and 10 distal triangular teeth; dactylus smooth, reaching 0.1
<normalizedToken originalValue="×">x</normalizedToken>
propodus length. Gnathopod 2 coxa broader than long, subequal in size with coxa 3, smooth, with tiny marginal setae, anterior margin expanded, anterodistally rounded, distal and posterior margins straight, facial setae absent; basis distally expanded, anterior margin with 10 medium setae, posterior margin with 2 short setae; ischium with 1 posterodistal seta; carpus 0.4
<normalizedToken originalValue="×">x</normalizedToken>
propodus length, curved, distally truncate, anterior margin dentate; propodus with 2 mediofacial setal rows, primary mediofacial setal row above midline, reaching 0.8
<normalizedToken originalValue="×">x</normalizedToken>
propodus length, secondary mediofacial setal row with 4 setae, with 1 row of submarginal setae, posterior margin with 5 small robust setae, palm convex with 10 tubercles; dactylus curved, proximal margin smooth with 1 seta, anterior margin distally subacute, reaching 0.5
<normalizedToken originalValue="×">x</normalizedToken>
propodus length. Pereopod 3 coxa length 1.3
<normalizedToken originalValue="×">x</normalizedToken>
width, anterodistal corner overriding distal face of coxa 2 and extending below it, smooth, with tiny marginal setae, anterior margin straight, distal margin oblique, posterior margin straight, facial setae absent. Pereopod 4 coxa smooth, with tiny marginal setae, anterior margin produced, distal margin evenly rounded, posterior margin tapered, facial setae absent. Pereopods 5-7 coxae facial setae present; bases width length ratios 1: 1.4, 1: 1.3, 1: 1.2, serrate, setose.
</paragraph>
<paragraph pageId="16" pageNumber="17">
<pageBreakToken pageId="16" pageNumber="17" start="start">Pleon</pageBreakToken>
. Epimera 1-2 with ventral setae, epimeron 3 bare; epimeron 3 posteroventral corner sinuous, rounded. Uropods 1-3 relative lengths 1.0: 0.8: 0.9. Uropod 1 peduncle subequal in length with inner ramus, outer ramus 0.9
<normalizedToken originalValue="×">x</normalizedToken>
inner ramus length; inner ramus with 6 robust setae and outer ramus with 4 robust setae. Uropod 2 peduncle 0.9
<normalizedToken originalValue="×">x</normalizedToken>
inner ramus length, outer ramus length 0.6
<normalizedToken originalValue="×">x</normalizedToken>
inner ramus length; inner ramus with 4 robust setae and outer ramus with 3 robust setae. Uropod 3 peduncle 1.2
<normalizedToken originalValue="×">x</normalizedToken>
inner ramus length, outer ramus length 0.9
<normalizedToken originalValue="×">x</normalizedToken>
inner ramus length; inner ramus with 3 robust setae and outer ramus with 5 robust setae. Telson 2.3
<normalizedToken originalValue="×">x</normalizedToken>
longer than wide, apex strongly tridentate.
</paragraph>
<paragraph pageId="16" pageNumber="17">Female (sexually dimorphic characters).</paragraph>
<paragraph pageId="16" pageNumber="17">Ventral cephalic keel anteroventral margin serrate. Gnathopod 1 basis posterior margin with 6 short setae. Gnathopod 2 basis posterior margin with 1 seta; ischium with 2 distal and 2 posterodistal setae; carpus distally tapered, anterior margin smooth; propodus posterior margin bare.</paragraph>
<caption pageId="16" pageNumber="17">
<paragraph pageId="16" pageNumber="17">
Figure 9.
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe lecroyae" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="lecroyae">Leucothoe lecroyae</taxonomicName>
sp. n., holotype male, 3.5 mm, RUMF-ZC-1763; paratype female, 3.3 mm, RUMF-ZC-1764.
</paragraph>
</caption>
<caption pageId="16" pageNumber="17">
<paragraph pageId="16" pageNumber="17">
Figure 10.
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe lecroyae" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="lecroyae">Leucothoe lecroyae</taxonomicName>
sp. n., holotype male, 3.5 mm, RUMF-ZC-1763; paratype female, 3.3 mm, RUMF-ZC-1764.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="16" pageNumber="17" type="etymology">
<paragraph pageId="16" pageNumber="17">Etymology.</paragraph>
<paragraph pageId="16" pageNumber="17">Named for Sara E. LeCroy, in recognition of her contribution to amphipod taxonomy. Ms LeCroy has been a colleague and friend for the past 7 years and the first author is very grateful for all her support.</paragraph>
</subSubSection>
<subSubSection pageId="16" pageNumber="17" type="ecology">
<paragraph pageId="16" pageNumber="17">Ecology.</paragraph>
<paragraph pageId="16" pageNumber="17">
In canals of sponges, brown sponge with holes on top only,
<taxonomicName genus="Rhadastrella" lsidName="Rhadastrella" pageId="16" pageNumber="17" rank="genus">Rhadastrella</taxonomicName>
sp., RUMF-ZP-1, KNWOkinawa16A (Figure 24H), dark red chimney sponge, Axinellidaeof
<bibRefCitation pageId="16" pageNumber="17">Carter 1875</bibRefCitation>
, RUMF-ZP-12, KNWYaku3F (Figure 24D), orange lumpy sponge,
<taxonomicName family="Axinellidae" lsidName="" pageId="16" pageNumber="17" rank="family">Axinellidae</taxonomicName>
(Figure 24J); and among coral rubble.
</paragraph>
</subSubSection>
<subSubSection pageId="16" pageNumber="17" type="relationships">
<paragraph pageId="16" pageNumber="17">Relationships.</paragraph>
<paragraph pageId="16" pageNumber="17">
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe lecroyae" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="lecroyae">Leucothoe lecroyae</taxonomicName>
sp. n. is similar to
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe cheiriserra" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="cheiriserra">Leucothoe cheiriserra</taxonomicName>
Serejo, 1998,
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe gavialis" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="gavialis">Leucothoe gavialis</taxonomicName>
Myers, 1985,
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe hipposideros" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="hipposideros">Leucothoe hipposideros</taxonomicName>
White &amp; Thomas, 2009,
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe squalidens" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="squalidens">Leucothoe squalidens</taxonomicName>
Ledoyer, 1984, and
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe hashi" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="hashi">Leucothoe hashi</taxonomicName>
sp. n. in having triangular teeth on the palm of gnathopod 1 propodus. It also shares a short dactylus on gnathopod 1, rounded head margin, and distally truncate gnathopod 2 carpus with
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe hashi" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="hashi">Leucothoe hashi</taxonomicName>
sp. n., but differs in having a more robust gnathopod 1 propodus and carpus, maxilla 1 palp 1-articulate, margins constricted, 2-layered lacinia mobilis on the right mandible, and wide pereopod 5-7 bases.
</paragraph>
</subSubSection>
<subSubSection pageId="16" pageNumber="17" type="remarks">
<paragraph pageId="16" pageNumber="17">Remarks.</paragraph>
<paragraph pageId="16" pageNumber="17">
<taxonomicName class="Malacostraca" family="Leucothoidae" genus="Leucothoe" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Leucothoe lecroyae" order="Amphipoda" pageId="16" pageNumber="17" phylum="Arthropoda" rank="species" species="lecroyae">Leucothoe lecroyae</taxonomicName>
sp. n. is faint yellow in color (Figure 23C). This species has been collected on Yakushima Island and
<normalizedToken originalValue="Amami–oshima">Amami-oshima</normalizedToken>
Island region (both Kagoshima) and from the northwestern and eastern coasts of
<normalizedToken originalValue="Okinawa–jima">Okinawa-jima</normalizedToken>
Island, Okinawa, Japan.
</paragraph>
</subSubSection>
<subSubSection pageId="16" pageNumber="17" type="distribution">
<paragraph pageId="16" pageNumber="17">Distribution.</paragraph>
<paragraph pageId="16" pageNumber="17">
East China Sea:
<normalizedToken originalValue="Okinawa–jima">Okinawa-jima</normalizedToken>
Island (Okinawa),
<normalizedToken originalValue="Amami–oshima">Amami-oshima</normalizedToken>
Island, Yakushima Island (both Kagoshima), Japan.
</paragraph>
</subSubSection>
</treatment>
</document>
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