288 lines
31 KiB
XML
288 lines
31 KiB
XML
<document id="1C90654158A02526F922B06F7A034B64" ID-DOI="10.5281/zenodo.196907" ID-GBIF-Dataset="75a8fe9a-5028-4a6a-ba3c-aa404344d072" ID-ISSN="1175-5326" ID-Zenodo-Dep="196907" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460257646372" checkinUser="plazi" docAuthor="Komai, Tomoyuki, Higashiji, Takuo & Castro, Peter" docDate="2010" docId="03B710750316CD48FF154EEEFB2A03C7" docLanguage="en" docName="zt02555p068.pdf" docOrigin="Zootaxa 2555" docStyle="DocumentStyle:890A69B780ED73D6DB8551B71C8AC79E.4:Zootaxa.2009-2012.journal_article" docStyleId="890A69B780ED73D6DB8551B71C8AC79E" docStyleName="Zootaxa.2009-2012.journal_article" docStyleVersion="4" docTitle="Hexagonaloides Komai, Higashiji & Castro, 2010, n. gen." docType="treatment" docVersion="10" lastPageNumber="63" masterDocId="FF8E680D0317CD49FF824E79FFC2042B" masterDocTitle="A new genus and new species of deep-water trapeziid crab (Crustacea: Decapoda: Brachyura: Trapezioidea) from the Ryukyu Islands, Japan" masterLastPageNumber="68" masterPageNumber="62" pageNumber="63" updateTime="1698243741369" updateUser="plazi">
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<mods:titleInfo id="9AA2531F4D4FE5D6B4CAEAAD78413621">
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<mods:title id="AAF32F10419E3C20D6114416F1A75EBD">A new genus and new species of deep-water trapeziid crab (Crustacea: Decapoda: Brachyura: Trapezioidea) from the Ryukyu Islands, Japan</mods:title>
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<mods:name id="E6452D19A493B643DAC6AFF2AF873286" type="personal">
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<mods:namePart id="D3039C95356CA81D8AB172E2481D4614">Komai, Tomoyuki</mods:namePart>
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<mods:namePart id="88162336DAA63EAEEE96DBFCC3FCF722">Higashiji, Takuo</mods:namePart>
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</mods:name>
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<mods:name id="16320F715BA8CA5E8185A188D69DD627" type="personal">
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<mods:namePart id="A60831BF74F6C14362E8E9D7CB078A3E">Castro, Peter</mods:namePart>
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<mods:typeOfResource id="D841E54A1F911B50748DDAFDEFAE04DD">text</mods:typeOfResource>
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<mods:title id="C419F448B680E92FCA2331B2A44C2562">Zootaxa</mods:title>
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<mods:part id="2266444122BD5843FCA410535CBD64F6">
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<mods:date id="E5AF912571C9D2FDB47F3BE4268B5FCC">2010</mods:date>
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<mods:detail id="B8EB32CDE51ECA374A046F9996A561F7" type="volume">
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<mods:number id="8E8ED6C0840BA990A1524D4A14E83A30">2555</mods:number>
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<mods:classification id="F545B88416260A2C3E4A758E29D3ECF3">journal article</mods:classification>
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<mods:identifier id="5E276B6D882B445792B49A6214882807" type="DOI">10.5281/zenodo.196907</mods:identifier>
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<mods:identifier id="36C2086E9877E6560204B92D6DFA2E69" type="GBIF-Dataset">75a8fe9a-5028-4a6a-ba3c-aa404344d072</mods:identifier>
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<mods:identifier id="5A5089CF040EBF9663012E33F0EB0AD8" type="ISSN">1175-5326</mods:identifier>
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<mods:identifier id="AF5650EFF75C1B56B2E45E4EAEAD249D" type="Zenodo-Dep">196907</mods:identifier>
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<treatment id="03B710750316CD48FF154EEEFB2A03C7" ID-DOI="http://doi.org/10.5281/zenodo.6195934" ID-GBIF-Taxon="119392681" ID-Zenodo-Dep="6195934" LSID="urn:lsid:plazi:treatment:03B710750316CD48FF154EEEFB2A03C7" httpUri="http://treatment.plazi.org/id/03B710750316CD48FF154EEEFB2A03C7" lastPageNumber="63" pageId="1" pageNumber="63">
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<subSubSection id="C304F2E80316CD48FF154EEEFD4B04DF" pageId="1" pageNumber="63" type="nomenclature">
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<paragraph id="8BA1A1630316CD48FF154EEEFE71049A" blockId="1.[151,674,151,244]" box="[151,435,151,177]" pageId="1" pageNumber="63">
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<heading id="D0E9160F0316CD48FF154EEEFE71049A" bold="true" box="[151,435,151,177]" fontSize="11" level="1" pageId="1" pageNumber="63" reason="1">
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<emphasis id="B96A7D710316CD48FF154EEEFE71049A" bold="true" box="[151,435,151,177]" pageId="1" pageNumber="63">
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<taxonomicName id="4C1EDAE00316CD48FF154EEEFE98049A" ID-CoL="7PK9J" box="[151,346,151,177]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus" status="gen. nov.">
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<emphasis id="B96A7D710316CD48FF154EEEFE98049A" bold="true" box="[151,346,151,177]" italics="true" pageId="1" pageNumber="63">Hexagonaloides</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="A259C00A0316CD48FEE34EEEFE71049A" box="[353,435,151,177]" pageId="1" pageNumber="63" rank="genus">n. gen.</taxonomicNameLabel>
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</emphasis>
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</heading>
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||
</paragraph>
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<paragraph id="8BA1A1630316CD48FF154EC4FD4B04DF" blockId="1.[151,674,151,244]" pageId="1" pageNumber="63">
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[new Japanese name: Shinkai-sanngo-gani-zoku]
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<emphasis id="B96A7D710316CD48FF154EA5FEE104DF" bold="true" box="[151,291,220,244]" pageId="1" pageNumber="63">
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<typeStatus id="54A51FC10316CD48FF154EA5FF0D04DF" box="[151,207,220,244]" pageId="1" pageNumber="63">Type</typeStatus>
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species
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</emphasis>
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.
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<taxonomicName id="4C1EDAE00316CD48FEB34EA4FD8504DF" box="[305,583,221,244]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="species" species="bathyalis" status="sp. nov.">
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<emphasis id="B96A7D710316CD48FEB34EA4FD8504DF" box="[305,583,221,244]" italics="true" pageId="1" pageNumber="63">Hexagonaloides bathyalis</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="A259C00A0316CD48FDCF4EA5FD4B04DF" box="[589,649,220,244]" pageId="1" pageNumber="63" rank="species">
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<emphasis id="B96A7D710316CD48FDCF4EA5FD4B04DF" bold="true" box="[589,649,220,244]" pageId="1" pageNumber="63">n. sp.</emphasis>
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</taxonomicNameLabel>
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</paragraph>
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||
</subSubSection>
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<subSubSection id="C304F2E80316CD48FF154F64FE390617" pageId="1" pageNumber="63" type="diagnosis">
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<paragraph id="8BA1A1630316CD48FF154F64FC9F063C" blockId="1.[151,1438,285,2028]" pageId="1" pageNumber="63">
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<emphasis id="B96A7D710316CD48FF154F64FED5051C" bold="true" box="[151,279,285,311]" pageId="1" pageNumber="63">Diagnosis</emphasis>
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. Carapace hexagonal; frontal margin smooth; anterolateral margins each with conspicuous, anterolaterally directed tooth arising at midlength. Orbit not concealing eye when retracted; supraorbital border lacking fissures. Chelipeds unequal; meri long, lacking teeth on anterior margin. Dactyli of second to fifth pereopods (first to fourth ambulatory legs) ending in small acute corneous spine, flexor margin bi-edged, each edge crenulate, with slender corneous spinules. Male abdomen with third to fifth somites incompletely fused (suture present laterally), although completely immobile. Male first gonopod slender, tapering to acute tip; second gonopod about 0.3 length of first gonopod, stout.
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</paragraph>
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<paragraph id="8BA1A1630316CD48FF474C5BFE390617" blockId="1.[151,1438,285,2028]" box="[197,507,546,572]" pageId="1" pageNumber="63">
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<emphasis id="B96A7D710316CD48FF474C5BFEA60617" bold="true" box="[197,356,546,572]" pageId="1" pageNumber="63">Composition</emphasis>
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. Monotypic.
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</paragraph>
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</subSubSection>
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<subSubSection id="C304F2E80316CD48FF474C3EFB4F0389" pageId="1" pageNumber="63" type="discussion">
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<paragraph id="8BA1A1630316CD48FF474C3EFB25006C" blockId="1.[151,1438,285,2028]" pageId="1" pageNumber="63">
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<emphasis id="B96A7D710316CD48FF474C3EFEF5064A" bold="true" box="[197,311,583,609]" pageId="1" pageNumber="63">Remarks</emphasis>
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. The new genus agrees well with the diagnosis of the
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<taxonomicName id="4C1EDAE00316CD48FC314C31FBFE0649" box="[947,1084,584,610]" class="Malacostraca" family="Trapeziidae" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="family">Trapeziidae</taxonomicName>
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given by Castro
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<emphasis id="B96A7D710316CD48FA864C31FAFA064A" box="[1284,1336,584,609]" italics="true" pageId="1" pageNumber="63">et al</emphasis>
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. (2004). The entire frontal margin of the carapace and the lack of teeth on the anterior margin of the meri of chelipeds place this new genus close to
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<taxonomicName id="4C1EDAE00316CD48FD8D4CEBFD770680" box="[527,693,658,683]" class="Malacostraca" family="Trapeziidae" genus="Calocarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FD8D4CEBFD770680" box="[527,693,658,683]" italics="true" pageId="1" pageNumber="63">Calocarcinus</emphasis>
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</taxonomicName>
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and
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<taxonomicName id="4C1EDAE00316CD48FD764CEBFC010680" box="[756,963,658,683]" class="Malacostraca" family="Trapeziidae" genus="Philippicarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FD764CEBFC010680" box="[756,963,658,683]" italics="true" pageId="1" pageNumber="63">Philippicarcinus</emphasis>
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</taxonomicName>
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.
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<taxonomicName id="4C1EDAE00316CD48FC514CEBFB5F0680" box="[979,1181,658,683]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FC514CEBFB5F0680" box="[979,1181,658,683]" italics="true" pageId="1" pageNumber="63">Hexagonaloides</emphasis>
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</taxonomicName>
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, however, is readily distinguished from these two genera by the shape of the carapace, the structure of the orbit and the form of the male gonopods. The carapace is hexagonal in the new genus, octagonal with parallel, straight sides along the middle portion in
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<taxonomicName id="4C1EDAE00316CD48FEEA4D7BFDC70730" box="[360,517,770,795]" class="Malacostraca" family="Trapeziidae" genus="Calocarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FEEA4D7BFDC70730" box="[360,517,770,795]" italics="true" pageId="1" pageNumber="63">Calocarcinus</emphasis>
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</taxonomicName>
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(Castro
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<emphasis id="B96A7D710316CD48FDEA4D7BFD600730" box="[616,674,770,795]" italics="true" pageId="1" pageNumber="63">et al.</emphasis>
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2004: pl. 4C), and transversely ovoid in
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<taxonomicName id="4C1EDAE00316CD48FBFF4D7BFAFD0730" box="[1149,1343,770,795]" class="Malacostraca" family="Trapeziidae" genus="Philippicarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FBFF4D7BFAFD0730" box="[1149,1343,770,795]" italics="true" pageId="1" pageNumber="63">Philippicarcinus</emphasis>
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</taxonomicName>
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(Castro
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<emphasis id="B96A7D710316CD48FF154D51FF19076A" box="[151,219,808,833]" italics="true" pageId="1" pageNumber="63">et al.</emphasis>
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2004: pl. 4D). The lateral margin of the carapace bears one tooth in
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<taxonomicName id="4C1EDAE00316CD48FB0E4D51FAA0076A" box="[1164,1378,808,833]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FB0E4D51FAA0076A" box="[1164,1378,808,833]" italics="true" pageId="1" pageNumber="63">Hexagonaloides</emphasis>
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</taxonomicName>
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and
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<emphasis id="B96A7D710316CD48FF154D34FE93074D" box="[151,337,845,870]" italics="true" pageId="1" pageNumber="63">Phlippicarcinus</emphasis>
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, and two teeth in
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<taxonomicName id="4C1EDAE00316CD48FDA24D34FD7F074D" box="[544,701,845,870]" class="Malacostraca" family="Trapeziidae" genus="Calocarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FDA24D34FD7F074D" box="[544,701,845,870]" italics="true" pageId="1" pageNumber="63">Calocarcinus</emphasis>
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</taxonomicName>
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. The orbit is open, with the inner suborbital angle not reaching to the lateral angle of the front in the new genus, whereas it is closed with the inner suborbital angle reaching to the lateral angle of the front in the latter two genera. The first gonopod is more slender in
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<taxonomicName id="4C1EDAE00316CD48FB5F4DE1FA59079A" box="[1245,1435,920,945]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FB5F4DE1FA59079A" box="[1245,1435,920,945]" italics="true" pageId="1" pageNumber="63">Hexagonaloides</emphasis>
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</taxonomicName>
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than in
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<taxonomicName id="4C1EDAE00316CD48FF734DC4FE4D07FD" box="[241,399,957,982]" class="Malacostraca" family="Trapeziidae" genus="Calocarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FF734DC4FE4D07FD" box="[241,399,957,982]" italics="true" pageId="1" pageNumber="63">Calocarcinus</emphasis>
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</taxonomicName>
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and
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<taxonomicName id="4C1EDAE00316CD48FE4B4DC4FD4E07FD" box="[457,652,957,982]" class="Malacostraca" family="Trapeziidae" genus="Philippicarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FE4B4DC4FD4E07FD" box="[457,652,957,982]" italics="true" pageId="1" pageNumber="63">Philippicarcinus</emphasis>
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</taxonomicName>
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, but the second gonopod is very short, about 0.3 the length of the first gonopod in
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<taxonomicName id="4C1EDAE00316CD48FED94D9BFDDB07D0" box="[347,537,994,1019]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FED94D9BFDDB07D0" box="[347,537,994,1019]" italics="true" pageId="1" pageNumber="63">Hexagonaloides</emphasis>
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</taxonomicName>
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, rather than notably elongated in
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<taxonomicName id="4C1EDAE00316CD48FC2A4D9BFB8707D0" box="[936,1093,994,1019]" class="Malacostraca" family="Trapeziidae" genus="Calocarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FC2A4D9BFB8707D0" box="[936,1093,994,1019]" italics="true" pageId="1" pageNumber="63">Calocarcinus</emphasis>
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</taxonomicName>
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(see
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<bibRefCitation id="EF8FDC920316CD48FB014D9BFAD807D7" author="Serene" box="[1155,1306,994,1020]" pageId="1" pageNumber="68" refString="Serene, R. (1984) Crustaces Decapodes Brachyoures de l'Ocean Indien Occidental et de la Mer Rouge. Xanthoidea: Xanthidae et Trapeziidae. Addendum: Carpiliidae et Menippidae par A. Crosnier. Faune Tropicale (ORSTOM), 24, 1 - 400, pls. 1 - 48." type="journal article" year="1984">Serène 1984</bibRefCitation>
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: figs. 197– 200) and
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<taxonomicName id="4C1EDAE00316CD48FE8B4A71FE0C000A" box="[265,462,1032,1057]" class="Malacostraca" family="Trapeziidae" genus="Philippicarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
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<emphasis id="B96A7D710316CD48FE8B4A71FE0C000A" box="[265,462,1032,1057]" italics="true" pageId="1" pageNumber="63">Philippicarcinus</emphasis>
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</taxonomicName>
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(see
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<bibRefCitation id="EF8FDC920316CD48FD8D4A71FD350009" author="Garth" box="[527,759,1032,1058]" pageId="1" pageNumber="68" refString="Garth, J. S & Kim, H. S. (1983) Crabs of the family Xanthidae (Crustacea: Brachyura) from the Philippine Islands and adjacent waters based largely on collections of the U. S. Fish Commission steamer Albatross in 1908 - 1909. Journal of Natural History, 17, 663 - 729." type="journal article" year="1983">Garth & Kim 1983</bibRefCitation>
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: fig. 14c, d). Furthermore, the chelipeds and ambulatory legs are distinctly more slender in
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<taxonomicName id="4C1EDAE00316CD48FDA84A54FD2B006D" box="[554,745,1069,1094]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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<emphasis id="B96A7D710316CD48FDA84A54FD2B006D" box="[554,745,1069,1094]" italics="true" pageId="1" pageNumber="63">Hexagonaloides</emphasis>
|
||
</taxonomicName>
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than in
|
||
<taxonomicName id="4C1EDAE00316CD48FCCA4A54FC27006D" box="[840,997,1069,1094]" class="Malacostraca" family="Trapeziidae" genus="Calocarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
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||
<emphasis id="B96A7D710316CD48FCCA4A54FC27006D" box="[840,997,1069,1094]" italics="true" pageId="1" pageNumber="63">Calocarcinus</emphasis>
|
||
</taxonomicName>
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||
and
|
||
<taxonomicName id="4C1EDAE00316CD48FB9C4A54FB22006D" box="[1054,1248,1069,1094]" class="Malacostraca" family="Trapeziidae" genus="Philippicarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FB9C4A54FB22006D" box="[1054,1248,1069,1094]" italics="true" pageId="1" pageNumber="63">Philippicarcinus</emphasis>
|
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</taxonomicName>
|
||
.
|
||
</paragraph>
|
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<paragraph id="8BA1A1630316CD48FF474A2BFBEB01BC" blockId="1.[151,1438,285,2028]" pageId="1" pageNumber="63">
|
||
In the shape of the carapace and the elongated chelipeds and ambulatory legs
|
||
<taxonomicName id="4C1EDAE00316CD48FBDD4A2AFADC0047" box="[1119,1310,1107,1132]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FBDD4A2AFADC0047" box="[1119,1310,1107,1132]" italics="true" pageId="1" pageNumber="63">Hexagonaloides</emphasis>
|
||
</taxonomicName>
|
||
resembles
|
||
<taxonomicName id="4C1EDAE00316CD48FF154A01FEEC00BA" box="[151,302,1144,1169]" class="Malacostraca" family="Trapeziidae" genus="Hexagonalia" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FF154A01FEEC00BA" box="[151,302,1144,1169]" italics="true" pageId="1" pageNumber="63">Hexagonalia</emphasis>
|
||
</taxonomicName>
|
||
(see Castro
|
||
<emphasis id="B96A7D710316CD48FE3D4A01FE3B00BA" box="[447,505,1144,1169]" italics="true" pageId="1" pageNumber="63">et al.</emphasis>
|
||
2004: pl. 4B) and
|
||
<taxonomicName id="4C1EDAE00316CD48FD564A01FC8900BA" box="[724,843,1144,1169]" class="Malacostraca" family="Trapeziidae" genus="Quadrella" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FD564A01FC8900BA" box="[724,843,1144,1169]" italics="true" pageId="1" pageNumber="63">Quadrella</emphasis>
|
||
</taxonomicName>
|
||
(see Castro
|
||
<emphasis id="B96A7D710316CD48FC5E4A01FBD500BA" box="[988,1047,1144,1169]" italics="true" pageId="1" pageNumber="63">et al.</emphasis>
|
||
2004: pl. 4A), but the new genus is readily distinguished from the latter two genera by its smooth frontal margin and the anteriorly unarmed cheliped meri. In
|
||
<taxonomicName id="4C1EDAE00316CD48FEEB4ABAFDC300F7" box="[361,513,1219,1244]" class="Malacostraca" family="Trapeziidae" genus="Hexagonalia" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FEEB4ABAFDC300F7" box="[361,513,1219,1244]" italics="true" pageId="1" pageNumber="63">Hexagonalia</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C1EDAE00316CD48FDB94ABAFD7100F7" box="[571,691,1219,1244]" class="Malacostraca" family="Trapeziidae" genus="Quadrella" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FDB94ABAFD7100F7" box="[571,691,1219,1244]" italics="true" pageId="1" pageNumber="63">Quadrella</emphasis>
|
||
</taxonomicName>
|
||
the frontal margin bears acute teeth and the anterior margin of the cheliped meri is armed with a row of spine-like teeth. Furthermore,
|
||
<taxonomicName id="4C1EDAE00316CD48FBCC4A91FB37012A" box="[1102,1269,1256,1281]" class="Malacostraca" family="Trapeziidae" genus="Hexagonalia" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FBCC4A91FB37012A" box="[1102,1269,1256,1281]" italics="true" pageId="1" pageNumber="63">Hexagonalia</emphasis>
|
||
</taxonomicName>
|
||
differs from
|
||
<taxonomicName id="4C1EDAE00316CD48FF154B74FE94010D" box="[151,342,1293,1318]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FF154B74FE94010D" box="[151,342,1293,1318]" italics="true" pageId="1" pageNumber="63">Hexagonaloides</emphasis>
|
||
</taxonomicName>
|
||
in having two teeth on the anterolateral margin of the carapace.
|
||
<emphasis id="B96A7D710316CD48FBC54B74FB34010D" box="[1095,1270,1293,1318]" italics="true" pageId="1" pageNumber="63">Spheromerides</emphasis>
|
||
(see Castro
|
||
<emphasis id="B96A7D710316CD48FA054B74FF770167" italics="true" pageId="1" pageNumber="63">et al.</emphasis>
|
||
2004: pl. 4E) shares a smooth frontal margin with
|
||
<taxonomicName id="4C1EDAE00316CD48FC934B4AFC0D0167" box="[785,975,1331,1356]" class="Malacostraca" family="Trapeziidae" genus="Hexagonaloides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FC934B4AFC0D0167" box="[785,975,1331,1356]" italics="true" pageId="1" pageNumber="63">Hexagonaloides</emphasis>
|
||
</taxonomicName>
|
||
, but the possession of two lateral teeth and spinose cheliped meri clearly sets them apart. Finally,
|
||
<taxonomicName id="4C1EDAE00316CD48FCDB4B21FC7D015A" box="[857,959,1368,1393]" class="Malacostraca" family="Trapeziidae" genus="Trapezia" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FCDB4B21FC7D015A" box="[857,959,1368,1393]" italics="true" pageId="1" pageNumber="63">Trapezia</emphasis>
|
||
</taxonomicName>
|
||
differs from the new genus in having a trapezoidal carapace and dentate cheliped meri (Castro
|
||
<emphasis id="B96A7D710316CD48FCA34B04FC9901BD" box="[801,859,1405,1430]" italics="true" pageId="1" pageNumber="63">et al.</emphasis>
|
||
2004: pl. 2C, D).
|
||
</paragraph>
|
||
<paragraph id="8BA1A1630316CD48FF474BDBFB4F0389" blockId="1.[151,1438,285,2028]" pageId="1" pageNumber="63">
|
||
Within the
|
||
<taxonomicName id="4C1EDAE00316CD48FED64BDBFC830197" authority="Castro et al. (2004)" authorityName="Castro et al." authorityYear="2004" box="[340,833,1442,1468]" class="Malacostraca" family="Trapeziidae" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="family">
|
||
Trapeziidae
|
||
<emphasis id="B96A7D710316CD48FE714BDAFDFB0197" box="[499,569,1443,1468]" italics="true" pageId="1" pageNumber="63">sensu</emphasis>
|
||
Castro
|
||
<emphasis id="B96A7D710316CD48FD1C4BDAFD150197" box="[670,727,1443,1468]" italics="true" pageId="1" pageNumber="63">et al</emphasis>
|
||
. (2004)
|
||
</taxonomicName>
|
||
, Ng
|
||
<emphasis id="B96A7D710316CD48FCFC4BDAFC750197" box="[894,951,1443,1468]" italics="true" pageId="1" pageNumber="63">et al</emphasis>
|
||
. (2008) recognised three subfamilies,
|
||
<taxonomicName id="4C1EDAE00316CD48FF154BB1FE7B01C9" authority="Miers, 1886" authorityName="Miers" authorityYear="1886" box="[151,441,1480,1506]" class="Malacostraca" family="Trapeziidae" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="subFamily" subFamily="Trapeziinae">Trapeziinae Miers, 1886</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C1EDAE00316CD48FE454BB1FCE001C9" authority="Stevcic, 2005" authorityName="Stevcic" authorityYear="2005" box="[455,802,1479,1506]" class="Malacostraca" family="Trapeziidae" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="subFamily" subFamily="Calocarcininae">Calocarcininae Števčić, 2005</taxonomicName>
|
||
, and
|
||
<taxonomicName id="4C1EDAE00316CD48FCE34BB1FB6101C9" authority="Stevcic, 2005" authorityName="Stevcic" authorityYear="2005" box="[865,1187,1479,1506]" class="Malacostraca" family="Trapeziidae" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="subFamily" subFamily="Quadrellinae">Quadrellinae Števčić, 2005</taxonomicName>
|
||
, citing differences in habitat, carapace and pereopodal features, as well as larval characters. This classification was followed by
|
||
<bibRefCitation id="EF8FDC920316CD48FAFB4B94FEBB0207" pageId="1" pageNumber="68" refString="De Grave, S., Pentcheff, N. D., Ahyong, S. T., Chan, T-Y, Crandall, K. A., Dworschak, P. C., Felder, D. L., Feldmann, R. M., Fransen, C. H. J. M., Goulding, L. Y. D., Lemaitre, R., Low, M. E. Y., Martin, J. W., Ng, P. K. L., Schweitzer, C. E., Tan, S. H., Tshudy, D. & Wetzer, R. (2009) A classification of living and fossil genera of decapod crustaceans. Raffles Bulletin of Zoology, Supplement 21, 1 - 109." type="book chapter">
|
||
De Grave
|
||
<emphasis id="B96A7D710316CD48FF67486AFEDB0207" box="[229,281,1555,1580]" italics="true" pageId="1" pageNumber="63">et al</emphasis>
|
||
. (2009)
|
||
</bibRefCitation>
|
||
. It is not easy to decide on the subfamilial affiliation of the new genus, because its mixture of diagnostic features fits both
|
||
<taxonomicName id="4C1EDAE00316CD48FD8C4841FD030279" box="[526,705,1592,1618]" class="Malacostraca" family="Trapeziidae" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="subFamily" subFamily="Calocarcininae">Calocarcininae</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C1EDAE00316CD48FD7F4841FC590279" box="[765,923,1592,1618]" class="Malacostraca" family="Trapeziidae" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="subFamily" subFamily="Quadrellinae">Quadrellinae</taxonomicName>
|
||
. We provisionally assign the new genus to
|
||
<taxonomicName id="4C1EDAE00316CD48FF154824FEEC025C" box="[151,302,1629,1655]" class="Malacostraca" family="Trapeziidae" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="subFamily" subFamily="Quadrellinae">Quadrellinae</taxonomicName>
|
||
because of the similarities in the carapace shape and the proportionately longer ambulatory legs. Further collections should reveal any possible symbiotic associations, and future investigations on larval development and molecular markers would be helpful in determining its position. Among calocarcinines,
|
||
<taxonomicName id="4C1EDAE00316CD48FF1548B4FE8302CD" box="[151,321,1741,1766]" class="Malacostraca" family="Trapeziidae" genus="Calocarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FF1548B4FE8302CD" box="[151,321,1741,1766]" italics="true" pageId="1" pageNumber="63">Calocarcinus</emphasis>
|
||
</taxonomicName>
|
||
species are symbionts of deep-water ahermatypic corals and other colonial cnidarians,
|
||
<taxonomicName id="4C1EDAE00316CD48FF15488AFEB70327" box="[151,373,1779,1804]" class="Malacostraca" family="Trapeziidae" genus="Philippicarcinus" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FF15488AFEB70327" box="[151,373,1779,1804]" italics="true" pageId="1" pageNumber="63">Philippicarcinus</emphasis>
|
||
</taxonomicName>
|
||
appears to be associated with deep-water glass sponges (P. K. L. Ng, personal communication) and
|
||
<taxonomicName id="4C1EDAE00316CD48FE274961FDA4031A" box="[421,614,1816,1841]" class="Malacostraca" family="Trapeziidae" genus="Sphenomerides" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FE274961FDA4031A" box="[421,614,1816,1841]" italics="true" pageId="1" pageNumber="63">Sphenomerides</emphasis>
|
||
</taxonomicName>
|
||
is not known to be associated with any particular hosts. Among quadrellines, species of
|
||
<taxonomicName id="4C1EDAE00316CD48FE344944FDED037D" box="[438,559,1853,1878]" class="Malacostraca" family="Trapeziidae" genus="Quadrella" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FE344944FDED037D" box="[438,559,1853,1878]" italics="true" pageId="1" pageNumber="63">Quadrella</emphasis>
|
||
</taxonomicName>
|
||
are symbionts of shallow-water antipatharians, gorgonians, alcyonaceans and, in one species, of shallow-water ahermatypic corals, while
|
||
<taxonomicName id="4C1EDAE00316CD48FC0D491AFBE50357" box="[911,1063,1891,1916]" class="Malacostraca" family="Trapeziidae" genus="Hexagonalia" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FC0D491AFBE50357" box="[911,1063,1891,1916]" italics="true" pageId="1" pageNumber="63">Hexagonalia</emphasis>
|
||
</taxonomicName>
|
||
species are symbionts of deepwater stylasterid (hydrozoan) corals and gorgonians (Castro
|
||
<emphasis id="B96A7D710316CD48FCD949F1FC4C038A" box="[859,910,1928,1953]" italics="true" pageId="1" pageNumber="63">et al</emphasis>
|
||
. 2004;
|
||
<bibRefCitation id="EF8FDC920316CD48FC6549F1FBB50389" author="Castro" box="[999,1143,1928,1954]" pageId="1" pageNumber="68" refString="Castro, P. (2005) A new species of Hexagonalia (Crustacea: Brachyura: Trapeziidae) from the Solomon Islands. Proceedings of the Biological Society of Washington, 118, 539 - 542." type="journal article" year="2005">Castro 2005</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C304F2E80316CD48FF4749D4FB2A03C7" pageId="1" pageNumber="63" type="etymology">
|
||
<paragraph id="8BA1A1630316CD48FF4749D4FB2A03C7" blockId="1.[151,1438,285,2028]" pageId="1" pageNumber="63">
|
||
<emphasis id="B96A7D710316CD48FF4749D4FE8C03EC" bold="true" box="[197,334,1965,1991]" pageId="1" pageNumber="63">Etymology</emphasis>
|
||
. From the generic name
|
||
<taxonomicName id="4C1EDAE00316CD48FD0249D4FCDE03ED" box="[640,796,1965,1990]" class="Malacostraca" family="Trapeziidae" genus="Hexagonalia" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FD0249D4FCDE03ED" box="[640,796,1965,1990]" italics="true" pageId="1" pageNumber="63">Hexagonalia</emphasis>
|
||
</taxonomicName>
|
||
and the suffix -
|
||
<emphasis id="B96A7D710316CD48FC5C49D4FBDC03ED" box="[990,1054,1965,1990]" italics="true" pageId="1" pageNumber="63">oides</emphasis>
|
||
(Latin) (= like, resembling), in reference to the superficial resemblance of the new genus to
|
||
<taxonomicName id="4C1EDAE00316CD48FCDC49AAFC3703C7" box="[862,1013,2003,2028]" class="Malacostraca" family="Trapeziidae" genus="Hexagonalia" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="63" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B96A7D710316CD48FCDC49AAFC3703C7" box="[862,1013,2003,2028]" italics="true" pageId="1" pageNumber="63">Hexagonalia</emphasis>
|
||
</taxonomicName>
|
||
. Gender: masculine.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |