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<document id="250F7A9730F418BB32D51BB15910E37E" ID="10.11646/zootaxa.4238.3.9SLASH10394" ID-CLB-Dataset="36336" ID-DOI="10.11646/zootaxa.4238.3.9" ID-GBIF-Dataset="e06f7111-2d5a-4ee9-94f2-3fa5b8041024" ID-ISSN="1175-5326" ID-Zenodo-Dep="345816" ID-ZooBank="BC619733-9EBA-4BAC-B89C-636438BF5502" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1488790925414" checkinUser="plazi" docAuthor="Chan, Tin-Yam &amp; Komai, Tomoyuki" docDate="2017" docId="0395C56AAA38FFF7F69DFE8114C72644" docLanguage="en" docName="zootaxa.4238.3.9SLASH10394.pdf" docOrigin="Zootaxa 4238 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Lebbeus quadratus Chan &amp; Komai, 2017, n. sp." docType="treatment" docUuid="4619A1CC-101E-4729-99A0-7F4DE2D8198D" docUuidSource="ZooBank" docVersion="8" lastPageNumber="431" masterDocId="FFACBD12AA39FFF2F60AFFE6153F2231" masterDocTitle="A new shrimp species of the genus Lebbeus White, 1847 (Crustacea: Deacpoda: Caridea: Thoridae) from a deep-sea cold seep site off southwestern Taiwan" masterLastPageNumber="432" masterPageNumber="426" pageNumber="427" updateTime="1698437653806" updateUser="ExternalLinkService">
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<mods:title id="DBA3B2E88EB337E86E5208EC879C142C">A new shrimp species of the genus Lebbeus White, 1847 (Crustacea: Deacpoda: Caridea: Thoridae) from a deep-sea cold seep site off southwestern Taiwan</mods:title>
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<mods:namePart id="E97EFFA01547685D8CC02A8CE6028CEC">Chan, Tin-Yam</mods:namePart>
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<mods:namePart id="B7F7B473E1E0F5F39F536EFBCF764EA9">Komai, Tomoyuki</mods:namePart>
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<mods:date id="7E30C7C161B888DE62DB35DFAB8EFDD4">2017</mods:date>
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<treatment id="0395C56AAA38FFF7F69DFE8114C72644" ID-DOI="http://doi.org/10.5281/zenodo.6017872" ID-GBIF-Taxon="127719379" ID-Zenodo-Dep="6017872" LSID="urn:lsid:zoobank.org:act:4619A1CC-101E-4729-99A0-7F4DE2D8198D" httpUri="http://treatment.plazi.org/id/0395C56AAA38FFF7F69DFE8114C72644" lastPageId="5" lastPageNumber="431" pageId="1" pageNumber="427">
<subSubSection id="C32627F7AA38FFF3F69DFE81143F2392" pageId="1" pageNumber="427" type="nomenclature">
<paragraph id="8B83747CAA38FFF3F69DFE8114F823B3" blockId="1.[151,455,359,419]" box="[151,455,359,386]" pageId="1" pageNumber="427">
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<taxonomicName id="4C3C0FFFAA38FFF3F69DFE81144223B0" box="[151,381,359,385]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="427" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA38FFF3F69DFE81144223B0" bold="true" box="[151,381,359,385]" italics="true" pageId="1" pageNumber="427">Lebbeus quadratus</emphasis>
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<figureCitation id="130768F9AA38FFF3F69DFE6C143F2392" box="[151,256,394,419]" captionStart-0="FIGURE 1" captionStart-1="FIGURE 2" captionStart-2="FIGURE 3" captionStartId-0="3.[151,250,1893,1915]" captionStartId-1="4.[151,250,1913,1935]" captionStartId-2="5.[151,250,881,903]" captionTargetBox-0="[221,1367,208,1859]" captionTargetBox-1="[203,1378,222,1874]" captionTargetBox-2="[221,1358,119,864]" captionTargetId-0="figure@3.[190,1377,193,1897]" captionTargetId-1="figure@4.[196,1387,193,1894]" captionTargetId-2="figure@5.[221,1358,119,864]" captionTargetPageId-0="3" captionTargetPageId-1="4" captionTargetPageId-2="5" captionText-0="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." captionText-1="FIGURE 2. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, left maxilliped III, lateral; B, same, distal part of ultimate segment, dorsal; C, same, distal part of antepenultimate segment, lateral; D, right pereiopod I, lateral; E, chela of left pereiopod I, lateral; F, left pereiopod III, lateral; G, same, dactylus and distal propodus, lateral; H, right pereiopod IV, lateral; I, left pereiopod V, lateral. Scales: A, D, F, H, I = 2 mm, B, C, E, G = 1 mm." captionText-2="FIGURE 3. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, habitus in lateral view, NTOU M 02039, showing coloration in life." httpUri-0="https://zenodo.org/record/345817/files/figure.png" httpUri-1="https://zenodo.org/record/345818/files/figure.png" httpUri-2="https://zenodo.org/record/345819/files/figure.png" pageId="1" pageNumber="427">Figs. 13</figureCitation>
</paragraph>
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<subSubSection id="C32627F7AA38FFF3F69DFE341024203E" pageId="1" pageNumber="427" type="materials_examined">
<paragraph id="8B83747CAA38FFF3F69DFE341024203E" blockId="1.[151,1437,466,2032]" pageId="1" pageNumber="427">
<materialsCitation id="3B547E21AA38FFF3F69DFE3411F223DA" ID-GBIF-Occurrence="1438340371" box="[151,1229,466,491]" country="Taiwan" latitude="22.058414" location="Material" longLatPrecision="1" longitude="119.80728" municipality="Four Way Closure Ridge" pageId="1" pageNumber="427" specimenCount="1">
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<location id="8EE322A7AA38FFF3F69DFE3415C023DA" LSID="urn:lsid:plazi:treatment:0395C56AAA38FFF7F69DFE8114C72644:8EE322A7AA38FFF3F69DFE3415C023DA" box="[151,255,466,491]" country="Taiwan" latitude="22.058414" longLatPrecision="1" longitude="119.80728" municipality="Four Way Closure Ridge" name="Material" pageId="1" pageNumber="427">Material</location>
examined.
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<collectingCountry id="F32B34ECAA38FFF3F7A8FE3414C823DA" box="[418,503,466,491]" name="Taiwan" pageId="1" pageNumber="427">Taiwan</collectingCountry>
,
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,
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,
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22°3.9253N, 119°48.0218E,
<quantity id="4CC4D999AA38FFF3F744FE1014D4203F" box="[334,491,502,527]" metricMagnitude="3" metricUnit="m" metricValue="1.401" metricValueMax="1.502" metricValueMin="1.3" pageId="1" pageNumber="427" unit="m" value="1401.0" valueMax="1502.0" valueMin="1300.0">13001502 m</quantity>
,
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,
<date id="FF8252BCAA38FFF3F476FE1017C6203E" box="[636,761,502,527]" pageId="1" pageNumber="427" value="2014-04">April 2014</date>
, holotype, female cl
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(NTOU
<accessionNumber id="946FE99FAA38FFF3F2A1FE111030203E" box="[1195,1295,503,527]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/M02039" pageId="1" pageNumber="427" type="EnaNcbi">M02039</accessionNumber>
).
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<subSubSection id="C32627F7AA38FFF0F6CDFDFC1678200B" lastPageId="2" lastPageNumber="428" pageId="1" pageNumber="427" type="description">
<paragraph id="8B83747CAA38FFF3F6CDFDFC15CB2146" blockId="1.[151,1437,466,2032]" pageId="1" pageNumber="427">
<emphasis id="B948A86EAA38FFF3F6CDFDFC14662002" bold="true" box="[199,345,538,563]" pageId="1" pageNumber="427">Description.</emphasis>
Rostrum (
<figureCitation id="130768F9AA38FFF3F7DAFDFC17302002" box="[464,527,538,563]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
A) broken at tip, slightly descending at base but strongly curving upwards distal to eyes, overreaching scaphocerite, preserved part 1.2 times as long as carapace; deepest at about midlength, about 0.25 of carapace height; dorsal boarder armed with 3 relatively strong teeth near rostral base, including 2 teeth on carapace posterior to orbital margin, posteriormost tooth arising at 0.25 of cl; ventral blade well developed, its border bearing 5 teeth in distal half, slightly more widely spaced distally; lateral carina obsolete. Carapace (
<figureCitation id="130768F9AA38FFF3F365FD4C159E20D6" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
A, B) with low and blunt postrostral ridge extending to near posterior margin; orbital margin evenly concave; supraorbital tooth distinct with base situated just behind orbital margin, lacking notch below; suborbital lobe distinct and rounded (
<figureCitation id="130768F9AA38FFF3F798FCF014EC211E" box="[402,467,790,815]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
B); antennal tooth well developed, somewhat elongate; pterygostomial tooth smaller than antennal and supraorbital teeth; anterolateral margin between antennal and pterygostomial teeth gently sinuous.
</paragraph>
<paragraph id="8B83747CAA38FFF3F6CDFC641152261B" blockId="1.[151,1437,466,2032]" pageId="1" pageNumber="427">
Abdomen (
<figureCitation id="130768F9AA38FFF3F74DFC6414B721AA" box="[327,392,898,923]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
E) with pleuron V bearing strong posteroventral tooth, unarmed on pleura IIV; tergite III dorsally rounded but somewhat produced posteriorly; somite VI 1.7 times longer than somite V, with small posterovental tooth and sharply pointed posterolateral process. Telson (
<figureCitation id="130768F9AA38FFF3F5CEFC2C113B21D2" box="[964,1028,970,995]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
F) 1.4 times longer than abdominal somite VI, armed with 5 pairs of dorsolateral spines; distal margin bluntly triangular, bearing 2 pairs of moderately long lateral teeth (mesial pair longer) and 7 median spinules as well as some long setae.
</paragraph>
<paragraph id="8B83747CAA38FFF3F6CDFBD116862642" blockId="1.[151,1437,466,2032]" pageId="1" pageNumber="427">
Eyes (
<figureCitation id="130768F9AA38FFF3F706FBD01475267E" box="[268,330,1078,1103]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
C) subpyriform; corneas strongly dilated and subspherical in shape, darkly pigmented, its diameter about 0.2 times of carapace length; no ocellar spot evident; stalks short.
</paragraph>
<paragraph id="8B83747CAA38FFF3F6CDFB98105326EE" blockId="1.[151,1437,466,2032]" pageId="1" pageNumber="427">
Antennular peduncle (
<figureCitation id="130768F9AA38FFF3F7CFFB98173926A6" box="[453,518,1150,1175]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
C) with basal segment longer than distal 2 segments combined; bearing distinct dorsolateral distal spine on each segment, progressively larger posteriorly; stylocerite slender and partially touching basal segment mesially, terminating in elongated sharp tooth, reaching midlength of second segment.
</paragraph>
<paragraph id="8B83747CAA38FFF3F6CDFB0C11EF277A" blockId="1.[151,1437,466,2032]" pageId="1" pageNumber="427">
Antennal peduncle (
<figureCitation id="130768F9AA38FFF3F7A4FB0C14CF2732" box="[430,496,1258,1283]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
C, D) with stout basicerite bearing slender ventrolateral distal tooth. Scaphocerite 0.8 times as long as carapace and 3.2 times longer than wide, lateral margin very slightly concave, distolateral tooth far falling short of distal margin of lamella. Carpocerite overreaching midlength of scaphocerite.
</paragraph>
<paragraph id="8B83747CAA38FFF3F6CDFAB016A227CF" blockId="1.[151,1437,466,2032]" pageId="1" pageNumber="427">
Maxilliped III endopod (
<figureCitation id="130768F9AA38FFF3F7E7FAB0170A275E" box="[493,565,1366,1391]" captionStart="FIGURE 2" captionStartId="4.[151,250,1913,1935]" captionTargetBox="[203,1378,222,1874]" captionTargetId="figure@4.[196,1387,193,1894]" captionTargetPageId="4" captionText="FIGURE 2. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, left maxilliped III, lateral; B, same, distal part of ultimate segment, dorsal; C, same, distal part of antepenultimate segment, lateral; D, right pereiopod I, lateral; E, chela of left pereiopod I, lateral; F, left pereiopod III, lateral; G, same, dactylus and distal propodus, lateral; H, right pereiopod IV, lateral; I, left pereiopod V, lateral. Scales: A, D, F, H, I = 2 mm, B, C, E, G = 1 mm." httpUri="https://zenodo.org/record/345818/files/figure.png" pageId="1" pageNumber="427">Fig. 2</figureCitation>
A) overreaching scaphocerite by 0.2 length of ultimate segment; ultimate segment 3.8 times longer than penultimate segment, distal part bearing some black corneous spines partially circumscribing terminal margin (
<figureCitation id="130768F9AA38FFF3F41CFA7817612786" box="[534,606,1438,1463]" captionStart="FIGURE 2" captionStartId="4.[151,250,1913,1935]" captionTargetBox="[203,1378,222,1874]" captionTargetId="figure@4.[196,1387,193,1894]" captionTargetPageId="4" captionText="FIGURE 2. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, left maxilliped III, lateral; B, same, distal part of ultimate segment, dorsal; C, same, distal part of antepenultimate segment, lateral; D, right pereiopod I, lateral; E, chela of left pereiopod I, lateral; F, left pereiopod III, lateral; G, same, dactylus and distal propodus, lateral; H, right pereiopod IV, lateral; I, left pereiopod V, lateral. Scales: A, D, F, H, I = 2 mm, B, C, E, G = 1 mm." httpUri="https://zenodo.org/record/345818/files/figure.png" pageId="1" pageNumber="427">Fig. 2</figureCitation>
B); antepenultimate segment subequal in length to distal two segments combined, distal margin bearing 1 dorsal and 1 lateral spiniform teeth as well as 1 ventrolateral spinule (
<figureCitation id="130768F9AA38FFF3F33CFA24104527EA" box="[1334,1402,1474,1499]" captionStart="FIGURE 2" captionStartId="4.[151,250,1913,1935]" captionTargetBox="[203,1378,222,1874]" captionTargetId="figure@4.[196,1387,193,1894]" captionTargetPageId="4" captionText="FIGURE 2. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, left maxilliped III, lateral; B, same, distal part of ultimate segment, dorsal; C, same, distal part of antepenultimate segment, lateral; D, right pereiopod I, lateral; E, chela of left pereiopod I, lateral; F, left pereiopod III, lateral; G, same, dactylus and distal propodus, lateral; H, right pereiopod IV, lateral; I, left pereiopod V, lateral. Scales: A, D, F, H, I = 2 mm, B, C, E, G = 1 mm." httpUri="https://zenodo.org/record/345818/files/figure.png" pageId="1" pageNumber="427">Fig. 2</figureCitation>
C). Exopod absent; strap-like epipod with distinct terminal hook present.
</paragraph>
<paragraph id="8B83747CAA38FFF0F6CDF9EC1639232A" blockId="1.[151,1437,466,2032]" lastBlockId="2.[151,1437,151,2010]" lastPageId="2" lastPageNumber="428" pageId="1" pageNumber="427">
Pereiopod I (
<figureCitation id="130768F9AA38FFF3F750F9EC14A62412" box="[346,409,1546,1571]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
D) moderately stout, extending to 0.7 of scaphocerite; segments generally unarmed except for a dorsoproximal denticle on merus; chela (
<figureCitation id="130768F9AA38FFF3F4A2F9C817D72476" box="[680,744,1582,1607]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="1" pageNumber="427">Fig. 1</figureCitation>
E) 1.3 times longer than carpus; fingers 0.7 times as long as palm, distal part partially obscured by tufts of stiff setae, dactylus terminating into 2 dark corneous claws (mesial one smaller), fixed finger terminating into a single dark corneous claw; epipod strap-like and with distinct terminal hook; setobranch corresponding to epipod on maxilliped 3 absent. Pereiopod II (left one missing, right side with most carpal articles accidentally lost after examination) slender, without epipod; overreaching scaphocerite by chela and distal 2 carpal articles; chela about 0.2 as long as carpus; carpus consisting of 7 articles, proximal third article longest occupying about half of carpal length; setobranch corresponding to epipod on pereiopod 1 absent. Pereiopods III to V lacking epipods and setobranchs, relatively long and slender, generally similar. Pereiopod III (
<figureCitation id="130768F9AA38FFF3F695F8AF15DD2553" box="[159,226,1865,1890]" captionStart="FIGURE 2" captionStartId="4.[151,250,1913,1935]" captionTargetBox="[203,1378,222,1874]" captionTargetId="figure@4.[196,1387,193,1894]" captionTargetPageId="4" captionText="FIGURE 2. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, left maxilliped III, lateral; B, same, distal part of ultimate segment, dorsal; C, same, distal part of antepenultimate segment, lateral; D, right pereiopod I, lateral; E, chela of left pereiopod I, lateral; F, left pereiopod III, lateral; G, same, dactylus and distal propodus, lateral; H, right pereiopod IV, lateral; I, left pereiopod V, lateral. Scales: A, D, F, H, I = 2 mm, B, C, E, G = 1 mm." httpUri="https://zenodo.org/record/345818/files/figure.png" pageId="1" pageNumber="427">Fig. 2</figureCitation>
F) overreaching scaphocerite by 0.8 of propodus; dactylus (
<figureCitation id="130768F9AA38FFF3F58BF8AF16FB2553" box="[897,964,1865,1890]" captionStart="FIGURE 2" captionStartId="4.[151,250,1913,1935]" captionTargetBox="[203,1378,222,1874]" captionTargetId="figure@4.[196,1387,193,1894]" captionTargetPageId="4" captionText="FIGURE 2. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, left maxilliped III, lateral; B, same, distal part of ultimate segment, dorsal; C, same, distal part of antepenultimate segment, lateral; D, right pereiopod I, lateral; E, chela of left pereiopod I, lateral; F, left pereiopod III, lateral; G, same, dactylus and distal propodus, lateral; H, right pereiopod IV, lateral; I, left pereiopod V, lateral. Scales: A, D, F, H, I = 2 mm, B, C, E, G = 1 mm." httpUri="https://zenodo.org/record/345818/files/figure.png" pageId="1" pageNumber="427">Fig. 2</figureCitation>
G) 0.15 (left) or 0.17 (right) times as long as propodus, bearing 4 accessory spinules decreasing in size proximally, clearly demarcated unguis and accessory spinules corneous, darkly pigmented; propodus with 2 rows of movable spinules on flexor surface; carpus unarmed; merus armed with 8 (left) or 9 (right) movable spines on lateral surface, distalmost spine largest; ischium unarmed. Pereiopod IV (
<figureCitation id="130768F9AA38FFF3F7B9F83114C825C1" box="[435,503,2007,2032]" captionStart="FIGURE 2" captionStartId="4.[151,250,1913,1935]" captionTargetBox="[203,1378,222,1874]" captionTargetId="figure@4.[196,1387,193,1894]" captionTargetPageId="4" captionText="FIGURE 2. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, left maxilliped III, lateral; B, same, distal part of ultimate segment, dorsal; C, same, distal part of antepenultimate segment, lateral; D, right pereiopod I, lateral; E, chela of left pereiopod I, lateral; F, left pereiopod III, lateral; G, same, dactylus and distal propodus, lateral; H, right pereiopod IV, lateral; I, left pereiopod V, lateral. Scales: A, D, F, H, I = 2 mm, B, C, E, G = 1 mm." httpUri="https://zenodo.org/record/345818/files/figure.png" pageId="1" pageNumber="427">Fig. 2</figureCitation>
H) overreaching scaphocerite by half of propodus; dactylus 0.14 times as long as propodus and also with 4 accessory spinules; merus with 5 (left) or 7 (right) lateral spines. Pereiopod V (
<figureCitation id="130768F9AA3BFFF0F34DFF7110B22281" box="[1351,1421,151,176]" captionStart="FIGURE 2" captionStartId="4.[151,250,1913,1935]" captionTargetBox="[203,1378,222,1874]" captionTargetId="figure@4.[196,1387,193,1894]" captionTargetPageId="4" captionText="FIGURE 2. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, left maxilliped III, lateral; B, same, distal part of ultimate segment, dorsal; C, same, distal part of antepenultimate segment, lateral; D, right pereiopod I, lateral; E, chela of left pereiopod I, lateral; F, left pereiopod III, lateral; G, same, dactylus and distal propodus, lateral; H, right pereiopod IV, lateral; I, left pereiopod V, lateral. Scales: A, D, F, H, I = 2 mm, B, C, E, G = 1 mm." httpUri="https://zenodo.org/record/345818/files/figure.png" pageId="2" pageNumber="428">
Fig.
<date id="FF8252BCAA3BFFF0F377FF7E10B22281" box="[1405,1421,152,176]" pageId="2" pageNumber="428">2</date>
</figureCitation>
I; right side with distal segments broken off) overreaching scaphocerite by 0.25 of propodus; dactylus 0.15 times as long as propodus, with 4 accessory spinules; distal part of propodus with tufts of dense grooming setae (some even plumose) on flexor surface; merus with 4 lateral spines.
</paragraph>
<paragraph id="8B83747CAA3BFFF0F6CDFEC311142353" blockId="2.[151,1437,151,2010]" pageId="2" pageNumber="428">
Pleopods without distinctive features. Uropod (
<figureCitation id="130768F9AA3BFFF0F4D3FEC31628230F" box="[729,791,293,318]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="2" pageNumber="428">Fig. 1</figureCitation>
F) with exopod slightly longer than endopod, armed with a small posterolateral tooth accompanied with a larger movable spine at diaeresis.
</paragraph>
<paragraph id="8B83747CAA3BFFF0F6CDFE89165523B7" blockId="2.[151,1437,151,2010]" box="[199,874,365,391]" pageId="2" pageNumber="428">
Eggs (not eyed) oval, large, with diameters of 1.8 x
<quantity id="4CC4D999AA3BFFF0F507FE8B165923B7" box="[781,870,365,390]" metricMagnitude="-3" metricUnit="m" metricValue="2.5" pageId="2" pageNumber="428" unit="mm" value="2.5">2.5 mm</quantity>
.
</paragraph>
<paragraph id="8B83747CAA3BFFF0F6CDFE771678200B" blockId="2.[151,1437,151,2010]" pageId="2" pageNumber="428">
<emphasis id="B948A86EAA3BFFF0F6CDFE771477239B" bold="true" box="[199,328,401,426]" pageId="2" pageNumber="428">Coloration</emphasis>
(
<figureCitation id="130768F9AA3BFFF0F755FE771494239B" box="[351,427,401,426]" captionStart="FIGURE 3" captionStartId="5.[151,250,881,903]" captionTargetBox="[221,1358,119,864]" captionTargetId="figure@5.[221,1358,119,864]" captionTargetPageId="5" captionText="FIGURE 3. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, habitus in lateral view, NTOU M 02039, showing coloration in life." httpUri="https://zenodo.org/record/345819/files/figure.png" pageId="2" pageNumber="428">Fig. 3</figureCitation>
). Body generally reddish translucent. Carapace and appendages generally reddish, posterior carapace paler in color and somewhat translucent. Rostrum except for posteriormost dorsal tooth, lateral parts of antennal peduncle and scaphocerite mostly translucent. Eyes black brown. Abdomen mostly translucent with faint broad reddish transverse bands on posterior part of each tergite; tail fan mainly reddish, exopods and endopods of pleopods also reddish. Eggs (not eyed) greenish.
</paragraph>
</subSubSection>
<subSubSection id="C32627F7AA3BFFF0F6CDFDA3107D206F" box="[199,1346,581,606]" pageId="2" pageNumber="428" type="distribution">
<paragraph id="8B83747CAA3BFFF0F6CDFDA3107D206F" blockId="2.[151,1437,151,2010]" box="[199,1346,581,606]" pageId="2" pageNumber="428">
<emphasis id="B948A86EAA3BFFF0F6CDFDA3145F206F" bold="true" box="[199,352,581,606]" pageId="2" pageNumber="428">Distribution.</emphasis>
Only known from the type-locality off southwestern
<collectingCountry id="F32B34ECAA3BFFF0F5BCFDA31134206F" box="[950,1035,581,606]" name="Taiwan" pageId="2" pageNumber="428">Taiwan</collectingCountry>
, at depths of
<quantity id="4CC4D999AA3BFFF0F2AAFDA31001206F" box="[1184,1342,581,606]" metricMagnitude="3" metricUnit="m" metricValue="1.401" metricValueMax="1.502" metricValueMin="1.3" pageId="2" pageNumber="428" unit="m" value="1401.0" valueMax="1502.0" valueMin="1300.0">13001502 m</quantity>
.
</paragraph>
</subSubSection>
<subSubSection id="C32627F7AA3BFFF0F6CDFD8F147F2097" pageId="2" pageNumber="428" type="etymology">
<paragraph id="8B83747CAA3BFFF0F6CDFD8F147F2097" blockId="2.[151,1437,151,2010]" pageId="2" pageNumber="428">
<emphasis id="B948A86EAA3BFFF0F6CDFD8F147120B3" bold="true" box="[199,334,617,642]" pageId="2" pageNumber="428">Etymology.</emphasis>
The Latin
<taxonomicName id="4C3C0FFFAA3BFFF0F7C7FD8C170020B3" box="[461,575,618,642]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="quadratus">
<emphasis id="B948A86EAA3BFFF0F7C7FD8C170020B3" box="[461,575,618,642]" italics="true" pageId="2" pageNumber="428">quadratus</emphasis>
</taxonomicName>
, meaning square, alludes to the type-locality of this new species, Four Way Closure Ridge.
</paragraph>
</subSubSection>
<subSubSection id="C32627F7AA3BFFF0F6CDFD57106A264B" pageId="2" pageNumber="428" type="discussion">
<paragraph id="8B83747CAA3BFFF0F6CDFD57106A264B" blockId="2.[151,1437,151,2010]" pageId="2" pageNumber="428">
<emphasis id="B948A86EAA3BFFF0F6CDFD57140420FB" bold="true" box="[199,315,689,714]" pageId="2" pageNumber="428">Remarks.</emphasis>
Although sometimes there are intra-specific variations in the presence or absence of epipods on the thoracic appendages (
<emphasis id="B948A86EAA3BFFF0F798FD31148520DF" box="[402,442,727,750]" italics="true" pageId="2" pageNumber="428">e.g.</emphasis>
,
<bibRefCitation id="EFAD098DAA3BFFF0F7C6FD33179A20DF" author="Komai" box="[460,677,725,750]" pageId="2" pageNumber="428" refString="Komai, T., Hayashi, K. &amp; Kohtsuka, H. (2004) Two new species of the shrimp genus Lebbeus White from the Sea of Japan, with redescription of Lebbeus kuboi Hayashi (Decapoda: Caridea: Hippolytidae). Crustacean Research, 33, 103 - 125." type="journal article" year="2004">
Komai
<emphasis id="B948A86EAA3BFFF0F429FD31176020DF" box="[547,607,726,750]" italics="true" pageId="2" pageNumber="428">et al.</emphasis>
2004
</bibRefCitation>
), the genus
<taxonomicName id="4C3C0FFFAA3BFFF0F53FFD3016AC20DF" box="[821,915,726,750]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="genus">
<emphasis id="B948A86EAA3BFFF0F53FFD3016AC20DF" box="[821,915,726,750]" italics="true" pageId="2" pageNumber="428">Lebbeus</emphasis>
</taxonomicName>
is divided into four informal species groups according to the number of epipods on maxilliped III through pereiopod III (see
<bibRefCitation id="EFAD098DAA3BFFF0F213FD1F11882123" author="Hayashi" box="[1049,1207,761,786]" pageId="2" pageNumber="428" refString="Hayashi, K. (1992) Studies on the hippolytid Shrimps from Japan-VIII. The genus Lebbeus White. Journal of Shimonoseki University Fisheries, 40, 107 - 138." type="journal article" year="1992">Hayashi 1992</bibRefCitation>
;
<bibRefCitation id="EFAD098DAA3BFFF0F2C8FD1F10AE2123" author="Komai" box="[1218,1425,761,786]" pageId="2" pageNumber="428" refString="Komai, T., Hayashi, K. &amp; Kohtsuka, H. (2004) Two new species of the shrimp genus Lebbeus White from the Sea of Japan, with redescription of Lebbeus kuboi Hayashi (Decapoda: Caridea: Hippolytidae). Crustacean Research, 33, 103 - 125." type="journal article" year="2004">
Komai
<emphasis id="B948A86EAA3BFFF0F31FFD1C10722123" box="[1301,1357,762,786]" italics="true" pageId="2" pageNumber="428">et al.</emphasis>
2004
</bibRefCitation>
). The present new species belongs to the group bearing epipods only on the maxilliped III and the pereiopod I. Seven taxa are currently placed in this group, viz.
<taxonomicName id="4C3C0FFFAA3BFFF0F48EFCA41134216B" authority="Rathbun, 1902" authorityName="Rathbun" authorityYear="1902" box="[644,1035,833,858]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="subSpecies" species="vicinus" subSpecies="vicinus">
<emphasis id="B948A86EAA3BFFF0F48EFCA416772168" box="[644,840,834,857]" italics="true" pageId="2" pageNumber="428">L. vicinus vicinus</emphasis>
(
<bibRefCitation id="EFAD098DAA3BFFF0F552FCA7113C216B" author="Rathbun" box="[856,1027,833,858]" pageId="2" pageNumber="428" refString="Rathbun, M. J. (1902) Descriptions of new decapod crustaceans from the west coast of North America. Proceedings of the U. S. National Museum, 24, 885 - 905." type="journal article" year="1902">Rathbun, 1902</bibRefCitation>
)
</taxonomicName>
,
<taxonomicName id="4C3C0FFFAA3BFFF0F21DFCA41463214F" authority="Wicksten &amp; Mendez, 1982" authorityName="Wicksten &amp; Mendez" authorityYear="1982" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="subSpecies" species="vicinus" subSpecies="montereyensis">
<emphasis id="B948A86EAA3BFFF0F21DFCA410132168" box="[1047,1324,834,857]" italics="true" pageId="2" pageNumber="428">L. vicinus montereyensis</emphasis>
<bibRefCitation id="EFAD098DAA3BFFF0F339FCA71463214F" author="Wicksten" pageId="2" pageNumber="428" refString="Wicksten, M. K. &amp; Mendez, M. G. (1982) New records and new species of the genus Lebbeus (Caridea: Hippolytidae) in the eastern Pacific Ocean. Bulletin of the Southern California Academy of Sciences, 81, 106 - 120." type="journal article" year="1982">Wicksten &amp; Mèndez, 1982</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="4C3C0FFFAA3BFFF0F763FC8117F5214F" authority="Kobjakova, 1936" authorityName="Kobjakova" authorityYear="1936" box="[361,714,869,894]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="longipes">
<emphasis id="B948A86EAA3BFFF0F763FC8114D7214F" box="[361,488,870,894]" italics="true" pageId="2" pageNumber="428">L. longipes</emphasis>
(
<bibRefCitation id="EFAD098DAA3BFFF0F7F3FC8317FD214F" author="Kobjakova" box="[505,706,869,894]" pageId="2" pageNumber="428" refString="Kobjakova, Z. I. (1936) Zoogeographical review of the decapod fauna from the Okhotsk and Japanese Seas. Trudy Leningradskogo Obchestva Estestvoispitateleii, 65, 187 - 228. [in Russian with English summary]" type="journal article" year="1936">Kobjakova, 1936</bibRefCitation>
)
</taxonomicName>
,
<taxonomicName id="4C3C0FFFAA3BFFF0F4D2FC811107214F" authority="Zarenkov, 1976" authorityName="Zarenkov" authorityYear="1976" box="[728,1080,869,894]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="curvirostris">
<emphasis id="B948A86EAA3BFFF0F4D2FC811645214F" box="[728,890,871,894]" italics="true" pageId="2" pageNumber="428">L. curvirostris</emphasis>
<bibRefCitation id="EFAD098DAA3BFFF0F589FC831107214F" author="Zarenkov" box="[899,1080,869,894]" pageId="2" pageNumber="428" refString="Zarenkov, N. A. (1976) On the fauna of decapods of the waters adjacent to South America. Byulleten' Moskovskogo Obshchestva Ispytatelei Prirody, Otdel Biologicheskii, 5, 8 - 18. [in Russian]" type="journal article" year="1976">Zarenkov, 1976</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="4C3C0FFFAA3BFFF0F24FFC8114722193" authority="Komai, Hayashi &amp; Kohtsuka, 2004" authorityName="Komai, Hayashi &amp; Kohtsuka" authorityYear="2004" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="elegans">
<emphasis id="B948A86EAA3BFFF0F24FFC811184214F" box="[1093,1211,870,894]" italics="true" pageId="2" pageNumber="428">L. elegans</emphasis>
<bibRefCitation id="EFAD098DAA3BFFF0F2CEFC8314722193" author="Komai" pageId="2" pageNumber="428" refString="Komai, T., Hayashi, K. &amp; Kohtsuka, H. (2004) Two new species of the shrimp genus Lebbeus White from the Sea of Japan, with redescription of Lebbeus kuboi Hayashi (Decapoda: Caridea: Hippolytidae). Crustacean Research, 33, 103 - 125." type="journal article" year="2004">Komai, Hayashi &amp; Kohtsuka, 2004</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="4C3C0FFFAA3BFFF0F750FC6C17E62193" authority="Komai &amp; Collins, 2009" authorityName="Komai &amp; Collins" authorityYear="2009" box="[346,729,905,930]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="manus">
<emphasis id="B948A86EAA3BFFF0F750FC6C14FC2190" box="[346,451,906,929]" italics="true" pageId="2" pageNumber="428">L. manus</emphasis>
<bibRefCitation id="EFAD098DAA3BFFF0F7C6FC6F17E62193" author="Komai" box="[460,729,905,930]" pageId="2" pageNumber="428" refString="Komai, T. &amp; Collins, P. (2009) Two species of caridean shrimps (Decapoda: Hippolytidae and Nematocarcinidae) newly recorded from hydrothermal vents on the Manus Basin, southwestern Pacific. Crustacean Research, 38, 28 - 41." type="journal article" year="2009">Komai &amp; Collins, 2009</bibRefCitation>
</taxonomicName>
and
<taxonomicName id="4C3C0FFFAA3BFFF0F51EFC6C10132193" authority="Schiaparelli, Ahyong &amp; Bowden, 2015" authorityName="Schiaparelli, Ahyong &amp; Bowden" authorityYear="2015" box="[788,1324,905,930]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="kiae">
<emphasis id="B948A86EAA3BFFF0F51EFC6C165D2193" box="[788,866,906,930]" italics="true" pageId="2" pageNumber="428">L. kiae</emphasis>
<bibRefCitation id="EFAD098DAA3BFFF0F561FC6F10132193" author="Schiaparelli" box="[875,1324,905,930]" pageId="2" pageNumber="428" refString="Schiaparelli, S., Ahyong, S. T. &amp; Bowden, D. (2015) Evidence of niche conservatism and host fidelity in the polar shrimp Lebbeus kiae n. sp. (Decapoda: Caridea: Thoridae) from the Ross Sea, Antarctica. Hydrobiologia, 761, 45 - 69. https: // doi. org / 10.1007 / s 10750 - 015 - 2403 - 1" type="journal article" year="2015">Schiaparelli, Ahyong &amp; Bowden, 2015</bibRefCitation>
</taxonomicName>
. The new species is readily distinguished from
<taxonomicName id="4C3C0FFFAA3BFFF0F44EFC4917FC21F7" box="[580,707,942,966]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="longipes">
<emphasis id="B948A86EAA3BFFF0F44EFC4917FC21F7" box="[580,707,942,966]" italics="true" pageId="2" pageNumber="428">L. longipes</emphasis>
</taxonomicName>
(Sea of
<collectingCountry id="F32B34ECAA3BFFF0F523FC49165621F7" box="[809,873,943,966]" name="Japan" pageId="2" pageNumber="428">Japan</collectingCountry>
and Sea of Okhotsk) in lacking a posteroventral tooth on the abdominal pleuron IV, and from
<taxonomicName id="4C3C0FFFAA3BFFF0F4A2FC34162121DB" box="[680,798,978,1002]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="elegans">
<emphasis id="B948A86EAA3BFFF0F4A2FC34162121DB" box="[680,798,978,1002]" italics="true" pageId="2" pageNumber="428">L. elegans</emphasis>
</taxonomicName>
(Sea of
<collectingCountry id="F32B34ECAA3BFFF0F58EFC3416F721DB" box="[900,968,978,1002]" name="Japan" pageId="2" pageNumber="428">Japan</collectingCountry>
),
<taxonomicName id="4C3C0FFFAA3BFFF0F5D4FC34102E21DB" authority="(Alaska)" baseAuthorityName="Alaska" box="[990,1297,977,1002]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="subSpecies" species="vicinus" subSpecies="vicinus">
<emphasis id="B948A86EAA3BFFF0F5D4FC34119921D8" box="[990,1190,978,1001]" italics="true" pageId="2" pageNumber="428">L. vicinus vicinus</emphasis>
(
<collectingRegion id="49F8BA9EAA3BFFF0F2B2FC37103621DB" box="[1208,1289,977,1002]" country="United States of America" name="Alaska" pageId="2" pageNumber="428">Alaska</collectingRegion>
)
</taxonomicName>
and
<taxonomicName id="4C3C0FFFAA3BFFF0F347FC34142F263F" authority="Ross Sea" authorityName="Ross Sea" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="kiae">
<emphasis id="B948A86EAA3BFFF0F347FC3410A321DB" box="[1357,1436,978,1002]" italics="true" pageId="2" pageNumber="428">L. kiae</emphasis>
(Ross Sea)
</taxonomicName>
in having only three dorsal rostral teeth (vs. four to eight dorsal rostral teeth; see
<bibRefCitation id="EFAD098DAA3BFFF0F2A9FC13107A263F" author="Rathbun" box="[1187,1349,1013,1038]" pageId="2" pageNumber="428" refString="Rathbun, M. J. (1904) Decapod crustaceans of the northwest coast of North America. Harriman Alaska Expedition, 10, 1 - 190, plates 1 - 10." type="journal article" year="1904">Rathbun 1904</bibRefCitation>
;
<bibRefCitation id="EFAD098DAA3BFFF0F35AFC13142F2603" author="Komai" pageId="2" pageNumber="428" refString="Komai, T., Hayashi, K. &amp; Kohtsuka, H. (2004) Two new species of the shrimp genus Lebbeus White from the Sea of Japan, with redescription of Lebbeus kuboi Hayashi (Decapoda: Caridea: Hippolytidae). Crustacean Research, 33, 103 - 125." type="journal article" year="2004">
Komai
<emphasis id="B948A86EAA3BFFF0F69DFBFC15F02603" box="[151,207,1050,1074]" italics="true" pageId="2" pageNumber="428">et al.</emphasis>
2004
</bibRefCitation>
;
<bibRefCitation id="EFAD098DAA3BFFF0F716FBFF171C2603" author="Schiaparelli" box="[284,547,1049,1074]" pageId="2" pageNumber="428" refString="Schiaparelli, S., Ahyong, S. T. &amp; Bowden, D. (2015) Evidence of niche conservatism and host fidelity in the polar shrimp Lebbeus kiae n. sp. (Decapoda: Caridea: Thoridae) from the Ross Sea, Antarctica. Hydrobiologia, 761, 45 - 69. https: // doi. org / 10.1007 / s 10750 - 015 - 2403 - 1" type="journal article" year="2015">
Schiaparelli
<emphasis id="B948A86EAA3BFFF0F7A2FBFC14DF2603" box="[424,480,1050,1074]" italics="true" pageId="2" pageNumber="428">et al.</emphasis>
2015
</bibRefCitation>
).
<taxonomicName id="4C3C0FFFAA3BFFF0F43FFBFC16BF2600" box="[565,896,1050,1074]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="subSpecies" species="vicinus" subSpecies="motereyensis">
<emphasis id="B948A86EAA3BFFF0F43FFBFC16BF2600" box="[565,896,1050,1074]" italics="true" pageId="2" pageNumber="428">Lebbeus vicinus motereyensis</emphasis>
</taxonomicName>
(Baja
<collectingRegion id="49F8BA9EAA3BFFF0F5C0FBFF11022603" box="[970,1085,1049,1074]" country="United States of America" name="California" pageId="2" pageNumber="428">California</collectingRegion>
) has three or four dorsal rostral teeth but it has a much shorter rostrum (about 0.7 of carapace length) far falling short of the distal margin of the scaphocerite and fewer ventral rostral teeth (four vs. five in the new species; see
<bibRefCitation id="EFAD098DAA3BFFF0F215FB871076264B" author="Wicksten" box="[1055,1353,1121,1146]" pageId="2" pageNumber="428" refString="Wicksten, M. K. &amp; Mendez, M. G. (1982) New records and new species of the genus Lebbeus (Caridea: Hippolytidae) in the eastern Pacific Ocean. Bulletin of the Southern California Academy of Sciences, 81, 106 - 120." type="journal article" year="1982">Wicksten &amp; Méndez 1982</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="C32627F7AA3BFFF7F6CDFB6014C72644" lastPageId="5" lastPageNumber="431" pageId="2" pageNumber="428" type="reference_group">
<paragraph id="8B83747CAA3BFFF0F6CDFB6016A225EB" blockId="2.[151,1437,151,2010]" pageId="2" pageNumber="428">
<taxonomicName id="4C3C0FFFAA3BFFF0F6CDFB60149B26AF" box="[199,420,1158,1182]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA3BFFF0F6CDFB60149B26AF" box="[199,420,1158,1182]" italics="true" pageId="2" pageNumber="428">Lebbeus quadratus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27B1515AA3BFFF0F7BBFB6314C926AF" box="[433,502,1157,1182]" pageId="2" pageNumber="428" rank="species">
<emphasis id="B948A86EAA3BFFF0F7BBFB6314C926AF" bold="true" box="[433,502,1157,1182]" pageId="2" pageNumber="428">n. sp.</emphasis>
</taxonomicNameLabel>
is closest to
<taxonomicName id="4C3C0FFFAA3BFFF0F4ABFB61163226AF" box="[673,781,1159,1182]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="manus">
<emphasis id="B948A86EAA3BFFF0F4ABFB61163226AF" box="[673,781,1159,1182]" italics="true" pageId="2" pageNumber="428">L. manus</emphasis>
</taxonomicName>
and
<emphasis id="B948A86EAA3BFFF0F55BFB6116C026AF" box="[849,1023,1159,1182]" italics="true" pageId="2" pageNumber="428">
<taxonomicName id="4C3C0FFFAA3BFFF0F55BFB6116C526AF" box="[849,1018,1159,1182]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="curvirostris">L. curvirostris</taxonomicName>
.
</emphasis>
The dactyli of the posterior three pereiopods have four accessory spinules on flexor margins in
<taxonomicName id="4C3C0FFFAA3BFFF0F553FB4C16D526F3" box="[857,1002,1194,1218]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA3BFFF0F553FB4C16D526F3" box="[857,1002,1194,1218]" italics="true" pageId="2" pageNumber="428">L. quadratus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27B1515AA3BFFF0F5F8FB4F110D26F3" box="[1010,1074,1193,1218]" pageId="2" pageNumber="428" rank="species">
<emphasis id="B948A86EAA3BFFF0F5F8FB4F110D26F3" bold="true" box="[1010,1074,1193,1218]" pageId="2" pageNumber="428">n. sp.</emphasis>
</taxonomicNameLabel>
, but five in both
<emphasis id="B948A86EAA3BFFF0F2F1FB4C141226D7" italics="true" pageId="2" pageNumber="428">
<taxonomicName id="4C3C0FFFAA3BFFF0F2F1FB4C10A326F0" box="[1275,1436,1194,1217]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="curvirostris">L. curvirostris</taxonomicName>
and
<taxonomicName id="4C3C0FFFAA3BFFF0F6CDFB29141226D7" box="[199,301,1231,1254]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="manus">L. manus</taxonomicName>
</emphasis>
(
<bibRefCitation id="EFAD098DAA3BFFF0F731FB2814E826D7" author="Fransen" box="[315,471,1230,1254]" pageId="2" pageNumber="428" refString="Fransen, C. H. J. M. (1997) Lebbeus africanus spec. nov., a new shrimp (Crustacea, Decapoda, Caridea, Hippolytidae) from Mauritanian waters, with redescriptions of four other species in the genus. Zoologische Mededelingen, 71, 231 - 260." type="journal article" year="1997">Fransen 1997</bibRefCitation>
;
<bibRefCitation id="EFAD098DAA3BFFF0F7E8FB2B17DA26D7" author="Komai" box="[482,741,1229,1254]" pageId="2" pageNumber="428" refString="Komai, T. &amp; Collins, P. (2009) Two species of caridean shrimps (Decapoda: Hippolytidae and Nematocarcinidae) newly recorded from hydrothermal vents on the Manus Basin, southwestern Pacific. Crustacean Research, 38, 28 - 41." type="journal article" year="2009">Komai &amp; Collins 2009</bibRefCitation>
). However, the number of accessory spinules is rather variable in the species of this genus (see
<bibRefCitation id="EFAD098DAA3BFFF0F7F6FB1717F7273B" author="Komai" box="[508,712,1265,1290]" pageId="2" pageNumber="428" refString="Komai, T., Hayashi, K. &amp; Kohtsuka, H. (2004) Two new species of the shrimp genus Lebbeus White from the Sea of Japan, with redescription of Lebbeus kuboi Hayashi (Decapoda: Caridea: Hippolytidae). Crustacean Research, 33, 103 - 125." type="journal article" year="2004">
Komai
<emphasis id="B948A86EAA3BFFF0F445FB1417B9273B" box="[591,646,1266,1290]" italics="true" pageId="2" pageNumber="428">et al.</emphasis>
2004
</bibRefCitation>
; Komai 2015,
<bibRefCitation id="EFAD098DAA3BFFF0F566FB171161273B" author="Matsuzaki" box="[876,1118,1265,1290]" pageId="2" pageNumber="428" refString="Matsuzaki, K., Hibino, M. &amp; Komai, T. (2015) A new species of the caridean shrimp genus Lebbeus White, 1847 (Crustacea: Decapoda: Thoridae) from the southwestern Sea of Okhotsk, Hokkaido, Japan. Zootaxa, 4032 (3), 309 - 318. https: // doi. org / 10.11646 / zootaxa. 4032.3.6" type="journal article" year="2015">
Matsuzaki
<emphasis id="B948A86EAA3BFFF0F5EDFB141120273B" box="[999,1055,1266,1290]" italics="true" pageId="2" pageNumber="428">et al.</emphasis>
2015
</bibRefCitation>
) and might be unreliable for differentiating the new species from these two close relatives. The new species, nevertheless, can be distinguished from
<taxonomicName id="4C3C0FFFAA3BFFF0F6DEFADC144C2760" box="[212,371,1338,1361]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="curvirostris">
<emphasis id="B948A86EAA3BFFF0F6DEFADC144C2760" box="[212,371,1338,1361]" italics="true" pageId="2" pageNumber="428">L. curvirostris</emphasis>
</taxonomicName>
and
<taxonomicName id="4C3C0FFFAA3BFFF0F7A2FADC17312760" box="[424,526,1338,1361]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="manus">
<emphasis id="B948A86EAA3BFFF0F7A2FADC17312760" box="[424,526,1338,1361]" italics="true" pageId="2" pageNumber="428">L. manus</emphasis>
</taxonomicName>
in having more numerous lateral spines on the meri of pereiopods III and V. In
<taxonomicName id="4C3C0FFFAA3BFFF0F38FFADC14362747" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA3BFFF0F38FFADC14362747" italics="true" pageId="2" pageNumber="428">L. quadratus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27B1515AA3BFFF0F71AFABB14702747" box="[272,335,1373,1398]" pageId="2" pageNumber="428" rank="species">
<emphasis id="B948A86EAA3BFFF0F71AFABB14702747" bold="true" box="[272,335,1373,1398]" pageId="2" pageNumber="428">n. sp.</emphasis>
</taxonomicNameLabel>
, there are eight or nine spines and four spines on pereiopods III and V, respectively. On the other hand, in
<taxonomicName id="4C3C0FFFAA3BFFF0F6FDFA6414A827A8" box="[247,407,1410,1433]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="curvirostris">
<emphasis id="B948A86EAA3BFFF0F6FDFA6414A827A8" box="[247,407,1410,1433]" italics="true" pageId="2" pageNumber="428">L. curvirostris</emphasis>
</taxonomicName>
there are six spines and one spine (see
<bibRefCitation id="EFAD098DAA3BFFF0F547FA6416D727AB" author="Fransen" box="[845,1000,1410,1434]" pageId="2" pageNumber="428" refString="Fransen, C. H. J. M. (1997) Lebbeus africanus spec. nov., a new shrimp (Crustacea, Decapoda, Caridea, Hippolytidae) from Mauritanian waters, with redescriptions of four other species in the genus. Zoologische Mededelingen, 71, 231 - 260." type="journal article" year="1997">Fransen 1997</bibRefCitation>
); in
<taxonomicName id="4C3C0FFFAA3BFFF0F213FA64114027A8" box="[1049,1151,1410,1433]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="manus">
<emphasis id="B948A86EAA3BFFF0F213FA64114027A8" box="[1049,1151,1410,1433]" italics="true" pageId="2" pageNumber="428">L. manus</emphasis>
</taxonomicName>
, there are five spines and two spines (see
<bibRefCitation id="EFAD098DAA3BFFF0F741FA431770278F" author="Komai" box="[331,591,1445,1470]" pageId="2" pageNumber="428" refString="Komai, T. &amp; Collins, P. (2009) Two species of caridean shrimps (Decapoda: Hippolytidae and Nematocarcinidae) newly recorded from hydrothermal vents on the Manus Basin, southwestern Pacific. Crustacean Research, 38, 28 - 41." type="journal article" year="2009">Komai &amp; Collins 2009</bibRefCitation>
) on pereiopods III and V, respectively. Moreover, the supraorbital tooth on the carapace is relatively large and with the base located just behind the orbital margin in
<taxonomicName id="4C3C0FFFAA3BFFF0F282FA2C102727D3" box="[1160,1304,1482,1506]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA3BFFF0F282FA2C102727D3" box="[1160,1304,1482,1506]" italics="true" pageId="2" pageNumber="428">L. quadratus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27B1515AA3BFFF0F315FA2F106027D3" box="[1311,1375,1481,1506]" pageId="2" pageNumber="428" rank="species">
<emphasis id="B948A86EAA3BFFF0F315FA2F106027D3" bold="true" box="[1311,1375,1481,1506]" pageId="2" pageNumber="428">n. sp.</emphasis>
</taxonomicNameLabel>
(
<figureCitation id="130768F9AA3BFFF0F364FA2F159E2437" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="2" pageNumber="428">Fig. 1</figureCitation>
A, B), instead of rather minute and arising at the level of the orbital margin in
<taxonomicName id="4C3C0FFFAA3BFFF0F22EFA0911FA2437" box="[1060,1221,1519,1542]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="curvirostris">
<emphasis id="B948A86EAA3BFFF0F22EFA0911FA2437" box="[1060,1221,1519,1542]" italics="true" pageId="2" pageNumber="428">L. curvirostris</emphasis>
</taxonomicName>
(cf.
<bibRefCitation id="EFAD098DAA3BFFF0F2F1FA0910A72437" author="Fransen" box="[1275,1432,1518,1542]" pageId="2" pageNumber="428" refString="Fransen, C. H. J. M. (1997) Lebbeus africanus spec. nov., a new shrimp (Crustacea, Decapoda, Caridea, Hippolytidae) from Mauritanian waters, with redescriptions of four other species in the genus. Zoologische Mededelingen, 71, 231 - 260." type="journal article" year="1997">Fransen 1997</bibRefCitation>
: fig. 47) and
<taxonomicName id="4C3C0FFFAA3BFFF0F720F9F414AA2418" box="[298,405,1554,1577]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="manus">
<emphasis id="B948A86EAA3BFFF0F720F9F414AA2418" box="[298,405,1554,1577]" italics="true" pageId="2" pageNumber="428">L. manus</emphasis>
</taxonomicName>
(cf.
<bibRefCitation id="EFAD098DAA3BFFF0F7DAF9F717E0241B" author="Komai" box="[464,735,1553,1578]" pageId="2" pageNumber="428" refString="Komai, T. &amp; Collins, P. (2009) Two species of caridean shrimps (Decapoda: Hippolytidae and Nematocarcinidae) newly recorded from hydrothermal vents on the Manus Basin, southwestern Pacific. Crustacean Research, 38, 28 - 41." type="journal article" year="2009">Komai &amp; Collins 2009</bibRefCitation>
: fig. 2A).
<taxonomicName id="4C3C0FFFAA3BFFF0F551F9F411332418" box="[859,1036,1554,1578]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="manus">
<emphasis id="B948A86EAA3BFFF0F551F9F411332418" box="[859,1036,1554,1578]" italics="true" pageId="2" pageNumber="428">Lebbeus manus</emphasis>
</taxonomicName>
further differs from the other two species in the antennular stylocerite less elongate (just overreaching first antennular segment [
<bibRefCitation id="EFAD098DAA3BFFF0F2D9F9D3140E2443" author="Komai" pageId="2" pageNumber="428" refString="Komai, T. &amp; Collins, P. (2009) Two species of caridean shrimps (Decapoda: Hippolytidae and Nematocarcinidae) newly recorded from hydrothermal vents on the Manus Basin, southwestern Pacific. Crustacean Research, 38, 28 - 41." type="journal article" year="2009">Komai &amp; Collins 2009: fig. 2B</bibRefCitation>
] versus reaching midlength of second antennular segment [
<figureCitation id="130768F9AA3BFFF0F5D9F9BF112A2443" box="[979,1045,1625,1650]" captionStart="FIGURE 1" captionStartId="3.[151,250,1893,1915]" captionTargetBox="[221,1367,208,1859]" captionTargetId="figure@3.[190,1377,193,1897]" captionTargetPageId="3" captionText="FIGURE 1. Lebbeus quadratus n. sp., holotype ovig. female cl 13.4 mm, NTOU M 02039, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm." httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="2" pageNumber="428">Fig. 1</figureCitation>
C;
<bibRefCitation id="EFAD098DAA3BFFF0F231F9BC11E72443" author="Fransen" box="[1083,1240,1626,1650]" pageId="2" pageNumber="428" refString="Fransen, C. H. J. M. (1997) Lebbeus africanus spec. nov., a new shrimp (Crustacea, Decapoda, Caridea, Hippolytidae) from Mauritanian waters, with redescriptions of four other species in the genus. Zoologische Mededelingen, 71, 231 - 260." type="journal article" year="1997">Fransen 1997</bibRefCitation>
: fig. 48]) and the rostrum less curved (
<bibRefCitation id="EFAD098DAA3BFFF0F78BF99B17DB24A7" author="Komai" box="[385,740,1661,1686]" pageId="2" pageNumber="428" refString="Komai, T. &amp; Collins, P. (2009) Two species of caridean shrimps (Decapoda: Hippolytidae and Nematocarcinidae) newly recorded from hydrothermal vents on the Manus Basin, southwestern Pacific. Crustacean Research, 38, 28 - 41." type="journal article" year="2009">Komai &amp; Collins 2009: fig. 2A</bibRefCitation>
). The difference in the rostrum, however, might potentially be attributed to sexual differences, because the
<typeStatus id="5487CADEAA3BFFF0F48FF94717D8248B" box="[645,743,1697,1722]" pageId="2" pageNumber="428" type="holotype">holotype</typeStatus>
of
<taxonomicName id="4C3C0FFFAA3BFFF0F501F944164E2488" box="[779,881,1698,1721]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="manus">
<emphasis id="B948A86EAA3BFFF0F501F944164E2488" box="[779,881,1698,1721]" italics="true" pageId="2" pageNumber="428">L. manus</emphasis>
</taxonomicName>
is a male whereas the
<typeStatus id="5487CADEAA3BFFF0F266F94711E6248B" box="[1132,1241,1697,1722]" pageId="2" pageNumber="428" type="holotype">holotypes</typeStatus>
of
<taxonomicName id="4C3C0FFFAA3BFFF0F2F7F94410A32488" box="[1277,1436,1698,1721]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="curvirostris">
<emphasis id="B948A86EAA3BFFF0F2F7F94410A32488" box="[1277,1436,1698,1721]" italics="true" pageId="2" pageNumber="428">L. curvirostris</emphasis>
</taxonomicName>
and
<taxonomicName id="4C3C0FFFAA3BFFF0F6C6F921145D24EF" box="[204,354,1734,1758]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA3BFFF0F6C6F921145D24EF" box="[204,354,1734,1758]" italics="true" pageId="2" pageNumber="428">L. quadratus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27B1515AA3BFFF0F765F923148B24EF" box="[367,436,1733,1758]" pageId="2" pageNumber="428" rank="species">
<emphasis id="B948A86EAA3BFFF0F765F923148B24EF" bold="true" box="[367,436,1733,1758]" pageId="2" pageNumber="428">n. sp.</emphasis>
</taxonomicNameLabel>
are females. As have been shown for the other congeneric species, the rostrum is sometimes less strongly curved and more slender in males than in females in species of
<taxonomicName id="4C3C0FFFAA3BFFF0F279F90C11EF2533" box="[1139,1232,1770,1794]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="genus">
<emphasis id="B948A86EAA3BFFF0F279F90C11EF2533" box="[1139,1232,1770,1794]" italics="true" pageId="2" pageNumber="428">Lebbeus</emphasis>
</taxonomicName>
(see
<bibRefCitation id="EFAD098DAA3BFFF0F306F90F15C72517" author="Matsuzaki" pageId="2" pageNumber="428" refString="Matsuzaki, K., Hibino, M. &amp; Komai, T. (2015) A new species of the caridean shrimp genus Lebbeus White, 1847 (Crustacea: Decapoda: Thoridae) from the southwestern Sea of Okhotsk, Hokkaido, Japan. Zootaxa, 4032 (3), 309 - 318. https: // doi. org / 10.11646 / zootaxa. 4032.3.6" type="journal article" year="2015">
Matsuzaki
<emphasis id="B948A86EAA3BFFF0F382F90C158B2517" italics="true" pageId="2" pageNumber="428">et al.</emphasis>
2015
</bibRefCitation>
; Komai
<emphasis id="B948A86EAA3BFFF0F750F8E914AB2517" box="[346,404,1806,1830]" italics="true" pageId="2" pageNumber="428">et al.</emphasis>
2016). Species of
<taxonomicName id="4C3C0FFFAA3BFFF0F461F8E817F72517" box="[619,712,1806,1830]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="genus">
<emphasis id="B948A86EAA3BFFF0F461F8E817F72517" box="[619,712,1806,1830]" italics="true" pageId="2" pageNumber="428">Lebbeus</emphasis>
</taxonomicName>
have large eggs and generally, at least as currently understood, have rather narrow geographical range (
<emphasis id="B948A86EAA3BFFF0F457F8D417BA2578" box="[605,645,1842,1865]" italics="true" pageId="2" pageNumber="428">e.g.</emphasis>
,
<bibRefCitation id="EFAD098DAA3BFFF0F49EF8D7160C257B" author="Hayashi" box="[660,819,1841,1866]" pageId="2" pageNumber="428" refString="Hayashi, K. (1992) Studies on the hippolytid Shrimps from Japan-VIII. The genus Lebbeus White. Journal of Shimonoseki University Fisheries, 40, 107 - 138." type="journal article" year="1992">Hayashi 1992</bibRefCitation>
;
<bibRefCitation id="EFAD098DAA3BFFF0F54AF8D7112F257B" author="Komai" box="[832,1040,1841,1866]" pageId="2" pageNumber="428" refString="Komai, T., Hayashi, K. &amp; Kohtsuka, H. (2004) Two new species of the shrimp genus Lebbeus White from the Sea of Japan, with redescription of Lebbeus kuboi Hayashi (Decapoda: Caridea: Hippolytidae). Crustacean Research, 33, 103 - 125." type="journal article" year="2004">
Komai
<emphasis id="B948A86EAA3BFFF0F59EF8D416F2257B" box="[916,973,1842,1866]" italics="true" pageId="2" pageNumber="428">et al.</emphasis>
2004
</bibRefCitation>
,
<bibRefCitation id="EFAD098DAA3BFFF0F216F8D41168257B" author="Komai" box="[1052,1111,1842,1866]" pageId="2" pageNumber="428" refString="Komai, T., Tsuchida, S. &amp; Segonzac, M. (2012) Records of species of the hippolytid genus Lebbeus White, 1847 (Crustacea: Decapoda: Caridea) from hydrothermal vents in the Pacific Ocean, with descriptions of three new species. Zootaxa, 3241, 35 - 63." type="journal article" year="2012">2012</bibRefCitation>
;
<bibRefCitation id="EFAD098DAA3BFFF0F26EF8D411CD257B" author="Jensen" box="[1124,1266,1841,1866]" pageId="2" pageNumber="428" refString="Jensen, G. C. (2006) Three new species of Lebbeus (Crustacea: Decapoda: Hippolytidae) from the Northeastern Pacific. Zootaxa, 1383, 23 - 43." type="journal article" year="2006">Jensen 2006</bibRefCitation>
; Komai 2015). The geographic distances amongst
<collectingCountry id="F32B34ECAA3BFFF0F415F8B3174B255F" box="[543,628,1877,1902]" name="Taiwan" pageId="2" pageNumber="428">Taiwan</collectingCountry>
,
<collectingCountry id="F32B34ECAA3BFFF0F475F8B11668255F" box="[639,855,1877,1902]" name="Papua New Guinea" pageId="2" pageNumber="428">Papua New Guinea</collectingCountry>
and
<collectingCountry id="F32B34ECAA3BFFF0F586F8B116FF255F" box="[908,960,1879,1902]" name="Peru" pageId="2" pageNumber="428">Peru</collectingCountry>
also support the recognition of the present new species. Unfortunately, the
<typeStatus id="5487CADEAA3BFFF0F403F89F175425A3" box="[521,619,1913,1938]" pageId="2" pageNumber="428" type="holotype">holotype</typeStatus>
of
<taxonomicName id="4C3C0FFFAA3BFFF0F49CF89C17C025A0" box="[662,767,1914,1937]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="manus">
<emphasis id="B948A86EAA3BFFF0F49CF89C17C025A0" box="[662,767,1914,1937]" italics="true" pageId="2" pageNumber="428">L. manus</emphasis>
</taxonomicName>
has been preserved in formalin, while the few specimens known of
<taxonomicName id="4C3C0FFFAA3BFFF0F704F879148F2587" box="[270,432,1951,1974]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="428" phylum="Arthropoda" rank="species" species="curvirostris">
<emphasis id="B948A86EAA3BFFF0F704F879148F2587" box="[270,432,1951,1974]" italics="true" pageId="2" pageNumber="428">L. curvirostris</emphasis>
</taxonomicName>
were collected more than 50 years ago in 1968. Hence, molecular genetic comparison amongst these three closely related species has not yet been possible.
</paragraph>
<caption id="DF4324F4AA3AFFF1F69DF88315F925C4" httpUri="https://zenodo.org/record/345817/files/figure.png" pageId="3" pageNumber="429" targetBox="[221,1367,208,1859]" targetPageId="3">
<paragraph id="8B83747CAA3AFFF1F69DF88315F925C4" blockId="3.[151,1436,1892,2037]" pageId="3" pageNumber="429">
<emphasis id="B948A86EAA3AFFF1F69DF883142C254B" bold="true" box="[151,275,1893,1915]" pageId="3" pageNumber="429">FIGURE 1.</emphasis>
<taxonomicName id="4C3C0FFFAA3AFFF1F710F88214E4254B" box="[282,475,1892,1914]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="3" pageNumber="429" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA3AFFF1F710F88214E4254B" box="[282,475,1892,1914]" italics="true" pageId="3" pageNumber="429">Lebbeus quadratus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27B1515AA3AFFF1F7E8F8831723254B" box="[482,540,1893,1914]" pageId="3" pageNumber="429" rank="species">
<emphasis id="B948A86EAA3AFFF1F7E8F8831723254B" bold="true" box="[482,540,1893,1914]" pageId="3" pageNumber="429">n. sp.</emphasis>
</taxonomicNameLabel>
, holotype ovig. female cl 13.4 mm, NTOU
<accessionNumber id="946FE99FAA3AFFF1F5D1F882110B254B" box="[987,1076,1892,1914]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/M02039" pageId="3" pageNumber="429" type="EnaNcbi">M02039</accessionNumber>
, setae mostly omitted. A, carapace, lateral; B, anterolateral part of carapace, showing supraorbital tooth, suborbital lobe and antennal tooth, dorsolateral; C, anterior part of carapace and cephalic appendages, dorsal; D, right antenna and anteroventral part of carapace, lateral; E, abdomen, lateral; F, telson and left uropods, dorsal; G, tip of telson, dorsal. Scales: A, C, E, F = 5 mm, B, D = 2 mm, G = 0.5 mm.
</paragraph>
</caption>
<caption id="DF4324F4AA3DFFF6F69DF89F10BB25DB" httpUri="https://zenodo.org/record/345818/files/figure.png" pageId="4" pageNumber="430" targetBox="[203,1378,222,1874]" targetPageId="4">
<paragraph id="8B83747CAA3DFFF6F69DF89F10BB25DB" blockId="4.[151,1436,1913,2026]" pageId="4" pageNumber="430">
<emphasis id="B948A86EAA3DFFF6F69DF89F142925BF" bold="true" box="[151,278,1913,1935]" pageId="4" pageNumber="430">FIGURE 2.</emphasis>
<taxonomicName id="4C3C0FFFAA3DFFF6F72BF89F14D925BE" box="[289,486,1913,1935]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="430" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA3DFFF6F72BF89F14D925BE" box="[289,486,1913,1935]" italics="true" pageId="4" pageNumber="430">Lebbeus quadratus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27B1515AA3DFFF6F7FAF89F171225BF" box="[496,557,1913,1934]" pageId="4" pageNumber="430" rank="species">
<emphasis id="B948A86EAA3DFFF6F7FAF89F171225BF" bold="true" box="[496,557,1913,1934]" pageId="4" pageNumber="430">n. sp.</emphasis>
</taxonomicNameLabel>
, holotype ovig. female cl 13.4 mm, NTOU
<accessionNumber id="946FE99FAA3DFFF6F20DF89F115F25BE" box="[1031,1120,1913,1935]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/M02039" pageId="4" pageNumber="430" type="EnaNcbi">M02039</accessionNumber>
, setae mostly omitted. A, left maxilliped III, lateral; B, same, distal part of ultimate segment, dorsal; C, same, distal part of antepenultimate segment, lateral; D, right pereiopod I, lateral; E, chela of left pereiopod I, lateral; F, left pereiopod III, lateral; G, same, dactylus and distal propodus, lateral; H, right pereiopod IV, lateral; I, left pereiopod V, lateral. Scales: A, D, F, H, I = 2 mm, B, C, E, G = 1 mm.
</paragraph>
</caption>
<caption id="DF4324F4AA3CFFF7F69DFC9714782194" httpUri="https://zenodo.org/record/345819/files/figure.png" pageId="5" pageNumber="431" targetBox="[221,1358,119,864]" targetPageId="5">
<paragraph id="8B83747CAA3CFFF7F69DFC9714782194" blockId="5.[151,1436,881,933]" pageId="5" pageNumber="431">
<emphasis id="B948A86EAA3CFFF7F69DFC97142B21B7" bold="true" box="[151,276,881,903]" pageId="5" pageNumber="431">FIGURE 3.</emphasis>
<taxonomicName id="4C3C0FFFAA3CFFF7F717FC9714DF21B6" box="[285,480,881,903]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="431" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA3CFFF7F717FC9714DF21B6" box="[285,480,881,903]" italics="true" pageId="5" pageNumber="431">Lebbeus quadratus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27B1515AA3CFFF7F7E2FC97171C21B7" box="[488,547,881,902]" pageId="5" pageNumber="431" rank="species">
<emphasis id="B948A86EAA3CFFF7F7E2FC97171C21B7" bold="true" box="[488,547,881,902]" pageId="5" pageNumber="431">n. sp.</emphasis>
</taxonomicNameLabel>
, holotype ovig. female cl 13.4 mm, habitus in lateral view, NTOU
<accessionNumber id="946FE99FAA3CFFF7F2EBFC97100521B6" box="[1249,1338,881,903]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/M02039" pageId="5" pageNumber="431" type="EnaNcbi">M02039</accessionNumber>
, showing coloration in life.
</paragraph>
</caption>
<paragraph id="8B83747CAA3CFFF7F6CDFC2A14C72644" blockId="5.[151,1436,972,1142]" pageId="5" pageNumber="431">
Although the present new species was obtained from an area where a cold seep is present, it was collected by a deep-water trap. Thus, whether
<taxonomicName id="4C3C0FFFAA3CFFF7F7F1FC1717B42638" box="[507,651,1009,1033]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="431" phylum="Arthropoda" rank="species" species="quadratus" status="sp. nov.">
<emphasis id="B948A86EAA3CFFF7F7F1FC1717B42638" box="[507,651,1009,1033]" italics="true" pageId="5" pageNumber="431">L. quadratus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27B1515AA3CFFF7F498FC1617EE2638" box="[658,721,1008,1033]" pageId="5" pageNumber="431" rank="species">
<emphasis id="B948A86EAA3CFFF7F498FC1617EE2638" bold="true" box="[658,721,1008,1033]" pageId="5" pageNumber="431">n. sp.</emphasis>
</taxonomicNameLabel>
truly inhabits a cold seep itself is uncertain. The closely related species
<taxonomicName id="4C3C0FFFAA3CFFF7F6FAFBF01467261C" box="[240,344,1046,1069]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="431" phylum="Arthropoda" rank="species" species="manus">
<emphasis id="B948A86EAA3CFFF7F6FAFBF01467261C" box="[240,344,1046,1069]" italics="true" pageId="5" pageNumber="431">L. manus</emphasis>
</taxonomicName>
has been collected from a deep-sea hydrothermal vent (
<quantity id="4CC4D999AA3CFFF7F5D3FBF2110C261C" box="[985,1075,1044,1069]" metricMagnitude="3" metricUnit="m" metricValue="1.575" pageId="5" pageNumber="431" unit="m" value="1575.0">1575 m</quantity>
,
<bibRefCitation id="EFAD098DAA3CFFF7F24AFBF21076261C" author="Komai" box="[1088,1353,1044,1069]" pageId="5" pageNumber="431" refString="Komai, T. &amp; Collins, P. (2009) Two species of caridean shrimps (Decapoda: Hippolytidae and Nematocarcinidae) newly recorded from hydrothermal vents on the Manus Basin, southwestern Pacific. Crustacean Research, 38, 28 - 41." type="journal article" year="2009">Komai &amp; Collins 2009</bibRefCitation>
), while the habitat of
<taxonomicName id="4C3C0FFFAA3CFFF7F739FBDF14EC2661" box="[307,467,1081,1104]" class="Malacostraca" family="Hippolytidae" genus="Lebbeus" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="431" phylum="Arthropoda" rank="species" species="curvirostris">
<emphasis id="B948A86EAA3CFFF7F739FBDF14EC2661" box="[307,467,1081,1104]" italics="true" pageId="5" pageNumber="431">L. curvirostris</emphasis>
</taxonomicName>
is unknown except that the specimens originated from a similar depth (
<quantity id="4CC4D999AA3CFFF7F2F2FBDE10A62661" box="[1272,1433,1080,1105]" metricMagnitude="3" metricUnit="m" metricValue="1.77" metricValueMax="1.86" metricValueMin="1.68" pageId="5" pageNumber="431" unit="m" value="1770.0" valueMax="1860.0" valueMin="1680.0">16801860 m</quantity>
:
<bibRefCitation id="EFAD098DAA3CFFF7F69DFBBB147A2647" author="Zarenkov" box="[151,325,1117,1142]" pageId="5" pageNumber="431" refString="Zarenkov, N. A. (1976) On the fauna of decapods of the waters adjacent to South America. Byulleten' Moskovskogo Obshchestva Ispytatelei Prirody, Otdel Biologicheskii, 5, 8 - 18. [in Russian]" type="journal article" year="1976">Zarenkov 1976</bibRefCitation>
;
<bibRefCitation id="EFAD098DAA3CFFF7F75AFBB814D42644" author="Fransen" box="[336,491,1117,1141]" pageId="5" pageNumber="431" refString="Fransen, C. H. J. M. (1997) Lebbeus africanus spec. nov., a new shrimp (Crustacea, Decapoda, Caridea, Hippolytidae) from Mauritanian waters, with redescriptions of four other species in the genus. Zoologische Mededelingen, 71, 231 - 260." type="journal article" year="1997">Fransen 1997</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>