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<document id="133300907D8C6C629B947489F96921EA" ID-DOI="10.11646/zootaxa.3694.4.5" ID-GBIF-Dataset="7e137994-f352-4a45-b8a5-3956e794a750" ID-ISSN="1175-5326" ID-Zenodo-Dep="219421" ID-ZooBank="0547EBDB-8A08-4F0F-8902-7B928A0E5EBD" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460658921590" checkinUser="plazi" docAuthor="Larsen, Kim" docDate="2013" docId="1E49A048546E960DFF5AEB57FB74FD49" docLanguage="en" docName="zt03694p380.pdf" docOrigin="Zootaxa 3694 (4)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Ithyomus antarcticus Larsen, 2013, n. sp." docType="treatment" docVersion="9" lastPageNumber="372" masterDocId="E270D830546C9608FFCDE93EFFFDFF84" masterDocTitle="The ANDEEP Tanaidacea (Crustacea: Peracarida) revisited II: the family Anarthruridae and family incertae sedis, with descriptions of three new species and the erection of a new genus" masterLastPageNumber="380" masterPageNumber="367" pageNumber="369" updateTime="1698347281713" updateUser="plazi">
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<mods:title id="2BD0B9F1F9E05443B68FECBF5856B498">The ANDEEP Tanaidacea (Crustacea: Peracarida) revisited II: the family Anarthruridae and family incertae sedis, with descriptions of three new species and the erection of a new genus</mods:title>
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<mods:namePart id="8F1D0FBBA354A2DF1F3AA71EF03D0437">Larsen, Kim</mods:namePart>
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<mods:date id="7F2B4775F269F50AAAE93BCC5332818E">2013</mods:date>
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<mods:identifier id="F2D38F7424E237DD686E0BF6D9CDFFD9" type="DOI">10.11646/zootaxa.3694.4.5</mods:identifier>
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<mods:identifier id="A8504EE8A9DB9AAC4A9B45EA7240A394" type="Zenodo-Dep">219421</mods:identifier>
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<treatment id="1E49A048546E960DFF5AEB57FB74FD49" ID-DOI="http://doi.org/10.5281/zenodo.6151043" ID-GBIF-Taxon="119574210" ID-Zenodo-Dep="6151043" LSID="urn:lsid:plazi:treatment:1E49A048546E960DFF5AEB57FB74FD49" httpUri="http://treatment.plazi.org/id/1E49A048546E960DFF5AEB57FB74FD49" lastPageId="5" lastPageNumber="372" pageId="2" pageNumber="369">
<subSubSection id="DEFA42D5546E960AFF5AEB57FED5FD20" pageId="2" pageNumber="369" type="nomenclature">
<paragraph id="965F115E546E960AFF5AEB57FE1DFD07" blockId="2.[151,480,617,677]" box="[151,480,617,643]" pageId="2" pageNumber="369">
<heading id="CD17A632546E960AFF5AEB57FE1DFD07" bold="true" box="[151,480,617,643]" fontSize="11" level="1" pageId="2" pageNumber="369" reason="1">
<emphasis id="A494CD4C546E960AFF5AEB57FE1DFD07" bold="true" box="[151,480,617,643]" pageId="2" pageNumber="369">
<taxonomicName id="51E06ADD546E960AFF5AEB57FE6AFD07" ID-CoL="6NB2T" box="[151,407,617,643]" class="Malacostraca" family="Anarthruridae" genus="Ithyomus" kingdom="Animalia" order="Tanaidacea" pageId="2" pageNumber="369" phylum="Arthropoda" rank="species" species="antarcticus" status="sp. nov.">
<emphasis id="A494CD4C546E960AFF5AEB57FE6AFD07" bold="true" box="[151,407,617,643]" italics="true" pageId="2" pageNumber="369">Ithyomus antarcticus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="BFA77037546E960AFE53EB57FE1DFD07" box="[414,480,617,643]" pageId="2" pageNumber="369" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="965F115E546E960AFF5AEBB2FED5FD20" blockId="2.[151,480,617,677]" box="[151,296,652,677]" pageId="2" pageNumber="369">
(
<figureCitation id="0EDB0DDB546E960AFF52EBB2FF11FD20" box="[159,236,652,677]" captionStart="FIGURE 1" captionStartId="3.[151,250,1948,1970]" captionTargetBox="[195,1401,193,1931]" captionTargetId="figure@3.[188,1409,193,1932]" captionTargetPageId="3" captionText="FIGURE 1. Ithyomus antarcticus n. sp., holotype. A, habitus, lateral view, scale bar 1.0 mm; B, antennule; C, antenna, scale bar 0.25 mm; D, labrum, dorsal view; E, labrum, lateral view; F, left mandible; G, right mandible; H, maxillule; I, maxilla; J, maxilliped; K, epignath; L, pleopod; M, uropod. Scale bars 0.1 mm." httpUri="https://zenodo.org/record/219422/files/figure.png" pageId="2" pageNumber="369">Figs. 1</figureCitation>
&amp;
<figureCitation id="0EDB0DDB546E960AFEDDEBB2FEE2FD20" box="[272,287,652,676]" captionStart="FIGURE 2" captionStartId="4.[151,250,1799,1821]" captionTargetBox="[153,1431,200,1765]" captionTargetId="figure@4.[151,1436,193,1777]" captionTargetPageId="4" captionText="FIGURE 2. Ithyomus antarcticus n. sp., holotype. A, cheliped; B, pereopod 1; C, pereopod 2; D, pereopod 3; E, pereopod 4; F, pereopod 5; G, pereopod 6; Scale bar 0.5 mm." httpUri="https://zenodo.org/record/219423/files/figure.png" pageId="2" pageNumber="369">2</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="DEFA42D5546E960AFF5AEBEAFCC7FC94" pageId="2" pageNumber="369" type="materials_examined">
<paragraph id="965F115E546E960AFF5AEBEAFCC7FC94" blockId="2.[151,1437,724,2009]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF5AEBEAFE7FFD69" bold="true" box="[151,386,724,749]" pageId="2" pageNumber="369">Material examined.</emphasis>
<typeStatus id="495BAFFC546E960AFE47EBEAFE0AFD69" box="[394,503,724,749]" pageId="2" pageNumber="369" type="holotype">Holotype</typeStatus>
: neuter (Reg. # ZMH K-43955) dissected, ANDEEP-I, DZMB-HH 10589, station 105-2,
<geoCoordinate id="F3D47799546E960AFF2BEBC9FEFFFC94" box="[230,258,759,784]" direction="south" orientation="latitude" pageId="2" pageNumber="369" precision="9" value="-61.402332">61</geoCoordinate>
°24.14’S,
<geoCoordinate id="F3D47799546E960AFEBEEBC9FE00FC94" box="[371,509,759,784]" direction="west" orientation="longitude" pageId="2" pageNumber="369" precision="9" value="-58.8525">58°51.15’W</geoCoordinate>
,
<quantity id="5118BCBB546E960AFDC4EBC6FD9DFC8B" box="[521,608,760,784]" metricMagnitude="3" metricUnit="m" metricValue="2.29" pageId="2" pageNumber="369" unit="m" value="2290.0">2290 m</quantity>
,
<date id="E25E379E546E960AFDA6EBC6FCCBFC94" box="[619,822,759,784]" pageId="2" pageNumber="369" value="2002-02-14">14 February 2002</date>
.
</paragraph>
</subSubSection>
<subSubSection id="DEFA42D5546E960AFF0AEA22FC81FCF8" pageId="2" pageNumber="369" type="diagnosis">
<paragraph id="965F115E546E960AFF0AEA22FC81FCF8" blockId="2.[151,1437,724,2009]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF0AEA22FEBCFCB1" bold="true" box="[199,321,796,821]" pageId="2" pageNumber="369">Diagnosis.</emphasis>
Maxilliped endites with two small acute denticulations; palp article 2 with outer seta. Cheliped carpus and propodus lacking crenulations, carpus wide (l/w 1.4). Pereopods 1 and 2 propodus with dorso-subdistal seta. Pereopods 4 to 6 basis robust, ischium with two robust setae.
</paragraph>
</subSubSection>
<subSubSection id="DEFA42D5546E960AFF0AEAB9FCE4FC24" box="[199,793,903,928]" pageId="2" pageNumber="369" type="etymology">
<paragraph id="965F115E546E960AFF0AEAB9FCE4FC24" blockId="2.[151,1437,724,2009]" box="[199,793,903,928]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF0AEAB9FEB3FC24" bold="true" box="[199,334,903,928]" pageId="2" pageNumber="369">Etymology.</emphasis>
Named after the continent of
<collectingCountry id="EEF751CE546E960AFD50EAB9FCEBFC24" box="[669,790,903,928]" name="Antarctica" pageId="2" pageNumber="369">Antarctica</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="DEFA42D5546E960DFF0AEA92FB51FDB8" lastPageId="5" lastPageNumber="372" pageId="2" pageNumber="369" type="description">
<paragraph id="965F115E546E960AFF0AEA92FD7DFC40" blockId="2.[151,1437,724,2009]" box="[199,640,940,965]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF0AEA92FEA4FC41" bold="true" box="[199,345,940,965]" pageId="2" pageNumber="369">Description.</emphasis>
<typeStatus id="495BAFFC546E960AFE92EA92FE37FC41" box="[351,458,940,965]" pageId="2" pageNumber="369" type="holotype">Holotype</typeStatus>
, neuter 2.9 mm.
</paragraph>
<paragraph id="965F115E546E960AFF0AEAEEFA60FBB4" blockId="2.[151,1437,724,2009]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF0AEAEEFEFCFC6C" box="[199,257,976,1000]" italics="true" pageId="2" pageNumber="369">Body</emphasis>
(
<figureCitation id="0EDB0DDB546E960AFEDCEAF1FEACFC6C" box="[273,337,975,1000]" captionStart="FIGURE 1" captionStartId="3.[151,250,1948,1970]" captionTargetBox="[195,1401,193,1931]" captionTargetId="figure@3.[188,1409,193,1932]" captionTargetPageId="3" captionText="FIGURE 1. Ithyomus antarcticus n. sp., holotype. A, habitus, lateral view, scale bar 1.0 mm; B, antennule; C, antenna, scale bar 0.25 mm; D, labrum, dorsal view; E, labrum, lateral view; F, left mandible; G, right mandible; H, maxillule; I, maxilla; J, maxilliped; K, epignath; L, pleopod; M, uropod. Scale bars 0.1 mm." httpUri="https://zenodo.org/record/219422/files/figure.png" pageId="2" pageNumber="369">Fig. 1</figureCitation>
A). Cylindrical, 13 times as long as wide. Cephalothorax shorter than the lengths of pereonites 1 and 2 combined. Eyes and eye-lobes absent. Pereon lateral edge even, without setae. Pleon long (more than 0.25 times total body length). All pleonites subequal and with pleopods. Pleotelson shorter than two pleonites combined.
</paragraph>
<paragraph id="965F115E546E960AFF0AED02FB3FFB19" blockId="2.[151,1437,724,2009]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF0AED02FEC4FBD0" box="[199,313,1084,1108]" italics="true" pageId="2" pageNumber="369">Antennule</emphasis>
(fig. 1B). Shorter than cephalothorax. Article 1 shorter than rest of antennule, with one simple distal seta. Article 2 less than half as long as article 1, with two simple distal setae. Article 3 shorter than article 2, with two simple distal setae. Article 4 longer than article 2, with five distal setae and one aesthetasc.
</paragraph>
<paragraph id="965F115E546E960AFF0AED96FEAEFACB" blockId="2.[151,1437,724,2009]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF0AED96FED8FB3B" box="[199,293,1192,1215]" italics="true" pageId="2" pageNumber="369">Antenna</emphasis>
(fig. 1C). Almost as long as antennule. Article 1 wider than following articles, naked and fused to cephalothorax. Article 2 shorter than article 1, with one simple dorsodistal seta. Article 3 longer than article 1, with one simple dorsodistal seta. Article 4 longer than other articles, with five simple distal setae. Article 5 longer than article 3, with one simple distal seta. Article 6 decreasing in width at midlength, with two short subdistal and three long distal setae.
</paragraph>
<paragraph id="965F115E546E960AFF0AEC62FF1CF9AC" blockId="2.[151,1437,724,2009]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF0AEC62FEB7FAF0" box="[199,330,1372,1396]" italics="true" pageId="2" pageNumber="369">Mouthparts</emphasis>
.
<emphasis id="A494CD4C546E960AFE94EC62FE4FFAF0" box="[345,434,1372,1396]" italics="true" pageId="2" pageNumber="369">Labrum</emphasis>
(fig. 1D,E) elongate, protruding from under the carapace, naked.
<emphasis id="A494CD4C546E960AFB68EC62FAE6FAF0" box="[1189,1307,1372,1396]" italics="true" pageId="2" pageNumber="369">Mandibles</emphasis>
(fig. 1F,G) without molar or
<emphasis id="A494CD4C546E960AFEAFECBEFDF1FA1C" box="[354,524,1408,1432]" italics="true" pageId="2" pageNumber="369">lacinia mobilis</emphasis>
, incisors pointed.
<emphasis id="A494CD4C546E960AFD2EECBEFCC5FA1C" box="[739,824,1408,1432]" italics="true" pageId="2" pageNumber="369">Labium</emphasis>
not recovered.
<emphasis id="A494CD4C546E960AFC22ECBEFBA6FA1C" box="[1007,1115,1408,1432]" italics="true" pageId="2" pageNumber="369">Maxillule</emphasis>
(fig. 1H) endite with seven spiniform terminal setae; palp with two long, but unequally so, setae.
<emphasis id="A494CD4C546E960AFC53EC9AFC08FA38" box="[926,1013,1444,1468]" italics="true" pageId="2" pageNumber="369">Maxilla</emphasis>
(fig.
<date id="E25E379E546E960AFBFCEC9AFBB5FA38" box="[1073,1096,1444,1468]" pageId="2" pageNumber="369">1I</date>
) stout, naked.
<emphasis id="A494CD4C546E960AFB21EC9AFA98FA38" box="[1260,1381,1444,1468]" italics="true" pageId="2" pageNumber="369">Maxilliped</emphasis>
(fig. 1J) basis naked; endites narrower than basis, with distal seta; palp article 1 naked, article 2 with three simple inner setae and one outer seta, article 3 with four inner setae, article 4 with five long setae.
<emphasis id="A494CD4C546E960AFB90ECD2FB39F980" box="[1117,1220,1516,1540]" italics="true" pageId="2" pageNumber="369">Epignath</emphasis>
(fig. 1K) elongate, naked.
</paragraph>
<paragraph id="965F115E546E960AFF0AEF0AFEEDF884" blockId="2.[151,1437,724,2009]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF0AEF0AFED1F9C8" box="[199,300,1588,1612]" italics="true" pageId="2" pageNumber="369">Cheliped</emphasis>
(fig. 2A). Pseudocoxa prominent (three times as long as basis), naked and only connected to ventroproximal part of basis. Basis as long as merus, with ventral seta. Merus with one ventral seta. Carpus robust (l/w 1.4), as long as propodus including fixed finger, with one simple dorsal seta in each end and two robust ventral setae. Propodus with one seta at dactylus insertion and five inner setae increasing in length ventrally. Fixed finger with two robust ventral setae and three on inner margin. Dactylus as long as fixed finger, with long stout seta midlength.
</paragraph>
<paragraph id="965F115E546E960AFF0AEE32FECEF85D" blockId="2.[151,1437,724,2009]" pageId="2" pageNumber="369">
<emphasis id="A494CD4C546E960AFF0AEE32FEBAF8A0" box="[199,327,1804,1828]" italics="true" pageId="2" pageNumber="369">Pereopod 1</emphasis>
(fig. 2B). Coxa apparently naked. Basis longer than the three succeeding articles combined, naked. Ischium with one ventral seta. Merus shorter than carpus, widening distally, with two distal setae. Carpus longer than propodus, with three distal setae (possible an artefact as we would expect four setae). Propodus less than half as long as basis, with one dorso-subdistal seta, one bayonet seta as long as dactylus/unguis ventrodistally, and dorsal spine. Dactylus with dorsoproximal setae and combined with unguis as long as propodus. Unguis longer than dactylus.
</paragraph>
<caption id="C29F41D6546F960BFF5AEEA2FCB5F86B" httpUri="https://zenodo.org/record/219422/files/figure.png" pageId="3" pageNumber="370" targetBox="[195,1401,193,1931]" targetPageId="3">
<paragraph id="965F115E546F960BFF5AEEA2FCB5F86B" blockId="3.[151,1436,1948,2031]" pageId="3" pageNumber="370">
<emphasis id="A494CD4C546F960BFF5AEEA2FEF0F835" bold="true" box="[151,269,1948,1970]" pageId="3" pageNumber="370">FIGURE 1</emphasis>
.
<taxonomicName id="51E06ADD546F960BFED6EEA2FE0DF836" box="[283,496,1948,1970]" class="Malacostraca" family="Anarthruridae" genus="Ithyomus" kingdom="Animalia" order="Tanaidacea" pageId="3" pageNumber="370" phylum="Arthropoda" rank="species" species="antarcticus" status="sp. nov.">
<emphasis id="A494CD4C546F960BFED6EEA2FE0DF836" box="[283,496,1948,1970]" italics="true" pageId="3" pageNumber="370">Ithyomus antarcticus</emphasis>
</taxonomicName>
<emphasis id="A494CD4C546F960BFE3AEEA3FDCFF836" bold="true" box="[503,562,1949,1970]" pageId="3" pageNumber="370">
<taxonomicNameLabel id="BFA77037546F960BFE3AEEA3FDCFF836" box="[503,562,1949,1970]" pageId="3" pageNumber="370" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, holotype. A, habitus, lateral view, scale bar 1.0 mm; B, antennule; C, antenna, scale bar 0.25 mm; D, labrum, dorsal view; E, labrum, lateral view; F, left mandible; G, right mandible; H, maxillule; I, maxilla; J, maxilliped; K, epignath; L, pleopod; M, uropod. Scale bars 0.1 mm.
</paragraph>
</caption>
<caption id="C29F41D65468960CFF5AEE39FD95F8BF" httpUri="https://zenodo.org/record/219423/files/figure.png" pageId="4" pageNumber="371" targetBox="[153,1431,200,1765]" targetPageId="4">
<paragraph id="965F115E5468960CFF5AEE39FD95F8BF" blockId="4.[151,1435,1799,1851]" pageId="4" pageNumber="371">
<emphasis id="A494CD4C5468960CFF5AEE39FEF6F898" bold="true" box="[151,267,1799,1821]" pageId="4" pageNumber="371">FIGURE 2</emphasis>
.
<taxonomicName id="51E06ADD5468960CFED5EE39FE11F899" box="[280,492,1799,1821]" class="Malacostraca" family="Anarthruridae" genus="Ithyomus" kingdom="Animalia" order="Tanaidacea" pageId="4" pageNumber="371" phylum="Arthropoda" rank="species" species="antarcticus" status="sp. nov.">
<emphasis id="A494CD4C5468960CFED5EE39FE11F899" box="[280,492,1799,1821]" italics="true" pageId="4" pageNumber="371">Ithyomus antarcticus</emphasis>
</taxonomicName>
<emphasis id="A494CD4C5468960CFE3FEE39FDD6F898" bold="true" box="[498,555,1799,1820]" pageId="4" pageNumber="371">
<taxonomicNameLabel id="BFA770375468960CFE3FEE39FDD6F898" box="[498,555,1799,1820]" pageId="4" pageNumber="371" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, holotype. A, cheliped; B, pereopod 1; C, pereopod 2; D, pereopod 3; E, pereopod 4; F, pereopod 5; G, pereopod 6; Scale bar 0.5 mm.
</paragraph>
</caption>
<paragraph id="965F115E5468960CFF0AEE56FA9FF804" blockId="4.[151,1437,1896,2029]" box="[199,1378,1896,1921]" pageId="4" pageNumber="371">
<emphasis id="A494CD4C5468960CFF0AEE56FEB5F804" box="[199,328,1896,1920]" italics="true" pageId="4" pageNumber="371">Pereopod 2</emphasis>
(fig. 2C). As pereopod 1 except: carpus with three bayonet seta and one spiniform distal seta.
</paragraph>
<paragraph id="965F115E5468960DFF0AEEB2FD1EFF7C" blockId="4.[151,1437,1896,2029]" lastBlockId="5.[151,1437,151,717]" lastPageId="5" lastPageNumber="372" pageId="4" pageNumber="371">
<emphasis id="A494CD4C5468960CFF0AEEB2FEB5F820" box="[199,328,1932,1956]" italics="true" pageId="4" pageNumber="371">Pereopod 3</emphasis>
(fig. 2D). As pereopod 2 except: propodus apparently without dorsal seta (probably an artefact).
<emphasis id="A494CD4C5468960CFF0AEE8EFEB1F84D" box="[199,332,1968,1993]" italics="true" pageId="4" pageNumber="371">Pereopod 4</emphasis>
(fig. 2E). Coxa not visible. Basis with one setulose ventromedial seta arising from a process. Ischium with two thick ventral setae. Merus with two spiniform setae with bi- or trifurcate apex. Carpus longer than merus, with one bone-shaped seta and four spiniform distal setae with bi- or trifurcate apex. Propodus with two ventral and one dorsal bayonet setae and dorsal spine. Dactylus naked and combined with unguis marginally longer than propodus. Unguis, shorter than dactylus.
</paragraph>
<paragraph id="965F115E5469960DFF0AE83AFD99FE98" blockId="5.[151,1437,151,717]" box="[199,612,260,285]" pageId="5" pageNumber="372">
<emphasis id="A494CD4C5469960DFF0AE83AFEB5FE9F" box="[199,328,260,284]" italics="true" pageId="5" pageNumber="372">Pereopod 5</emphasis>
(fig. 2F). As pereopod 4.
</paragraph>
<paragraph id="965F115E5469960DFF0AE816FABAFEBB" blockId="5.[151,1437,151,717]" box="[199,1351,295,320]" pageId="5" pageNumber="372">
<emphasis id="A494CD4C5469960DFF0AE816FEB5FEC4" box="[199,328,296,320]" italics="true" pageId="5" pageNumber="372">Pereopod 6</emphasis>
(fig. 2G). As pereopod 4 except: propodus with two ventral and three dorsal bayonet setae.
</paragraph>
<paragraph id="965F115E5469960DFF0AE872FF20FE54" blockId="5.[151,1437,151,717]" pageId="5" pageNumber="372">
<emphasis id="A494CD4C5469960DFF0AE872FED2FEE0" box="[199,303,332,356]" italics="true" pageId="5" pageNumber="372">Pleopods</emphasis>
(fig. 1L). Well developed; endopod length subequal to exopod, with one outer and 13 inner plumose setae, the first of which have a complex apex. Exopod broader than endopod, with strongly convex inner margin and 31 plumose inner setae, the most proximal of which arises from an incompletely fused proximal vestigial article
</paragraph>
<paragraph id="965F115E5469960DFF0AE8E2FB51FDB8" blockId="5.[151,1437,151,717]" pageId="5" pageNumber="372">
<emphasis id="A494CD4C5469960DFF0AE8E2FEE0FE70" box="[199,285,476,500]" italics="true" pageId="5" pageNumber="372">Uropod</emphasis>
(fig. 1M). Basal article shorter than first endopod article. Endopod with two articles; article 1 more than twice as long as article 2, with three distal setae, article 2 with one medial and four distal setae. Exopod fused to basal article, more than half as long as endopod article 1, with blunt apex, with three setae.
</paragraph>
</subSubSection>
<subSubSection id="DEFA42D55469960DFF0AEB79FB74FD49" pageId="5" pageNumber="372" type="discussion">
<paragraph id="965F115E5469960DFF0AEB79FB74FD49" blockId="5.[151,1437,151,717]" pageId="5" pageNumber="372">
<emphasis id="A494CD4C5469960DFF0AEB79FEC6FDE4" bold="true" box="[199,315,583,608]" pageId="5" pageNumber="372">Remarks.</emphasis>
This species can be separated without dissection from the only other species in the genus,
<taxonomicName id="51E06ADD5469960DFAF8EB76FE5CFD00" authority="Bird, 2004" authorityName="Bird" authorityYear="2004" class="Malacostraca" family="Anarthruridae" genus="Ithyomus" kingdom="Animalia" order="Tanaidacea" pageId="5" pageNumber="372" phylum="Arthropoda" rank="species" species="conopygus">
<emphasis id="A494CD4C5469960DFAF8EB76FEF2FD00" italics="true" pageId="5" pageNumber="372">Ithyomus conopygus</emphasis>
Bird, 2004
</taxonomicName>
by the robust cheliped carpus and the carpus and propodus lacking crenulations. Furthermore it differs in the armament of the maxilliped endites, the dorso-subdistal seta on the pereopod 1 and 2 propodus, and pereopods 4 to 6 having a robust basis and two robust setae on the ischium.
</paragraph>
</subSubSection>
</treatment>
</document>
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