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<document id="718482C93142CAF797562E99B586A3F2" ID-CLB-Dataset="294448" ID-DOI="10.11646/zootaxa.5437.4.8" ID-GBIF-Dataset="6c334538-0c54-4cff-afac-6aa10ebc34f7" ID-ISSN="1175-5326" ID-Zenodo-Dep="10985590" ID-ZooBank="3A8125D2-C774-477B-81D4-E7EED582E2E9" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1713347266380" checkinUser="plazi" docAuthor="Dang, Khai, Hoang, Anh Tram &amp; Do, Cuong" docDate="2024" docId="03FEBE76FF8EF23600BA4A9BFEBF0B61" docLanguage="en" docName="zootaxa.5437.4.8.pdf" docOrigin="Zootaxa 5437 (4)" docSource="http://dx.doi.org/10.11646/zootaxa.5437.4.8" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Indochinamon datii Dang &amp; Hoang &amp; Do 2024, n. sp." docType="treatment" docVersion="6" lastPageNumber="567" masterDocId="FFC7C60EFF8FF231002D4948FFB40978" masterDocTitle="A new species of the genus Indochinamon Yeo &amp; Ng, 2007 (Crustacea: Brachyura: Potamoidea: Potamidae) and a new country record from Northern Vietnam" masterLastPageNumber="570" masterPageNumber="560" pageNumber="561" updateTime="1720562295771" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="F503AD9407FF67459A7CEC7F6BD5F481">A new species of the genus Indochinamon Yeo &amp; Ng, 2007 (Crustacea: Brachyura: Potamoidea: Potamidae) and a new country record from Northern Vietnam</mods:title>
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<mods:namePart id="C6A3CF540CCC862CCA17D4AA3ACA764F">Dang, Khai</mods:namePart>
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<mods:namePart id="8BB33E55661CDFB386D648A804A0559F">Hoang, Anh Tram</mods:namePart>
<mods:affiliation id="3D4354A77C7229703A872B127F7382D7">Center of Life Science Experta, 10 / 65 Van Bao, Ba Dinh, Hanoi, Vietnam</mods:affiliation>
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<mods:namePart id="5E897A6CE208C68ADE38894620B511A0">Do, Cuong</mods:namePart>
<mods:affiliation id="5799067C54F2CAC0C1766D678E9E7612">Center of Life Science Experta, 10 / 65 Van Bao, Ba Dinh, Hanoi, Vietnam</mods:affiliation>
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<treatment id="03FEBE76FF8EF23600BA4A9BFEBF0B61" ID-DOI="http://doi.org/10.5281/zenodo.10999182" ID-GBIF-Taxon="225794181" ID-Zenodo-Dep="10999182" LSID="urn:lsid:plazi:treatment:03FEBE76FF8EF23600BA4A9BFEBF0B61" httpUri="http://treatment.plazi.org/id/03FEBE76FF8EF23600BA4A9BFEBF0B61" lastPageId="7" lastPageNumber="567" pageId="1" pageNumber="561">
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<taxonomicName id="4C5774E3FF8EF23000BA4A9BFE3C0A96" ID-CoL="CCHLF" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[151,392,979,1006]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="561" phylum="Arthropoda" rank="species" species="datii" status="sp. nov.">
<emphasis id="B923D372FF8EF23000BA4A9BFE3C0A96" bold="true" box="[151,392,979,1006]" italics="true" pageId="1" pageNumber="561">Indochinamon datii</emphasis>
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<taxonomicNameLabel id="A2106E09FF8EF23001A24A9BFE650A95" box="[399,465,979,1005]" pageId="1" pageNumber="561" rank="species">n. sp.</taxonomicNameLabel>
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<paragraph id="8BE80F60FF8EF23000BA4ABFFEA60D69" blockId="1.[151,465,979,1041]" box="[151,274,1015,1041]" pageId="1" pageNumber="561">
(
<figureCitation id="136C13E5FF8EF23000B24ABFFEBD0D69" box="[159,265,1015,1041]" captionStart-0="FIGURE 1" captionStart-1="FIGURE 2" captionStart-2="FIGURE 3" captionStart-3="FIGURE 4" captionStart-4="FIGURE 5" captionStart-5="FIGURE 6" captionStartId-0="2.[152,255,1368,1392]" captionStartId-1="3.[152,255,1297,1321]" captionStartId-2="4.[152,255,798,822]" captionStartId-3="4.[152,255,1903,1927]" captionStartId-4="5.[152,255,686,710]" captionStartId-5="6.[152,255,1901,1925]" captionTargetBox-0="[151,1436,381,1345]" captionTargetBox-1="[151,1436,237,1274]" captionTargetBox-2="[151,1435,181,774]" captionTargetBox-3="[151,1435,883,1880]" captionTargetBox-4="[151,1435,181,663]" captionTargetBox-5="[158,1429,496,1871]" captionTargetId-0="figure-106@2.[151,1436,381,1345]" captionTargetId-1="figure-56@3.[151,1436,237,1274]" captionTargetId-2="figure-17@4.[151,1435,181,774]" captionTargetId-3="figure-48@4.[151,1435,883,1880]" captionTargetId-4="figure-21@5.[151,1435,181,663]" captionTargetId-5="figure-208@6.[151,1436,489,1878]" captionTargetPageId-0="2" captionTargetPageId-1="3" captionTargetPageId-2="4" captionTargetPageId-3="4" captionTargetPageId-4="5" captionTargetPageId-5="6" captionText-0="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." captionText-1="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." captionText-2="FIGURE 3. Indochinamon datii n. sp. paratype, female (60 × 47 mm) (Experta collection 2023.003); A, pleon, ventral view; B, thoracic sternum and vulvae, ventral view." captionText-3="FIGURE 4. Indochinamon datii n. sp., colour in life. A, brownish-green form, dorsal view, male, from type locality, specimen not collected; B, brownish-green form, frontal view, male, from type locality, specimen not collected; C, yellowish-orange form, dorsal view, male, from type locality, specimen not collected; D, yellowish-orange form, frontal view, male, from type locality, specimen not collected." captionText-4="FIGURE 5. Habitat of Indochinamon datii n. sp. in Xuan Son National Park. A, during the dry season on 18 March 2023; B, during the rainy season on 9 July 2022." captionText-5="FIGURE 6. Indochinamon datii n. sp., holotype, male (61 × 49 mm) (VNMN 2022.001). A, left third maxilliped, external view; B, left G1, ventral view; C, left G1, dorsal view; D, left G2, dorsal view; E, distal part of left G1, ventral view; F, distal part of left G1, dorsal view." figureDoi-0="http://doi.org/10.5281/zenodo.10985592" figureDoi-1="http://doi.org/10.5281/zenodo.10985594" figureDoi-2="http://doi.org/10.5281/zenodo.10985596" figureDoi-3="http://doi.org/10.5281/zenodo.10985598" figureDoi-4="http://doi.org/10.5281/zenodo.10985600" figureDoi-5="http://doi.org/10.5281/zenodo.10985602" httpUri-0="https://zenodo.org/record/10985592/files/figure.png" httpUri-1="https://zenodo.org/record/10985594/files/figure.png" httpUri-2="https://zenodo.org/record/10985596/files/figure.png" httpUri-3="https://zenodo.org/record/10985598/files/figure.png" httpUri-4="https://zenodo.org/record/10985600/files/figure.png" httpUri-5="https://zenodo.org/record/10985602/files/figure.png" pageId="1" pageNumber="561">Figs. 16</figureCitation>
)
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<emphasis id="B923D372FF8EF23000BA4D70FE350D2A" bold="true" box="[151,385,1080,1106]" pageId="1" pageNumber="561">Material examined.</emphasis>
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: male (61 ×
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), (
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), mainstream,
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,
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,
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,
<collectingRegion id="4993C182FF8EF230018C4D14FDC40D0E" box="[417,624,1116,1142]" country="Vietnam" name="Phu Tho" pageId="1" pageNumber="561">Phu Tho Province</collectingRegion>
(
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,
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), coll. local people,
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<collectingDate id="EFADD048FF8EF23004484D15FAB00D0F" box="[1125,1284,1117,1143]" pageId="1" pageNumber="561" value="2022-06-18">18 June 2022</collectingDate>
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.
<typeStatus id="54ECB1C2FF8EF230053D4D15FA350D0F" box="[1296,1409,1117,1143]" pageId="1" pageNumber="561" type="paratype">Paratypes</typeStatus>
:
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(60 ×
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, 66 ×
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),
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(60 ×
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) (
<collectingCounty id="628977ECFF8EF230030F4DC9FCCF0DE3" box="[802,891,1153,1179]" pageId="1" pageNumber="561">Experta</collectingCounty>
collection 2023.001; 2023.002; 2023.003), main stream,
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,
<location id="8E8859BBFF8EF23001734DEDFDC10DC6" LSID="urn:lsid:plazi:treatment:03FEBE76FF8EF23600BA4A9BFEBF0B61:8E8859BBFF8EF23001734DEDFDC10DC6" box="[350,629,1188,1215]" county="Experta" latitude="21.14" longLatPrecision="75" longitude="104.942" municipality="Ban Coi" name="Xuan Son National Park" pageId="1" pageNumber="561" stateProvince="Phu Tho">Xuan Son National Park</location>
,
<location id="8E8859BBFF8EF23002AC4DEDFC8C0DC6" LSID="urn:lsid:plazi:treatment:03FEBE76FF8EF23600BA4A9BFEBF0B61:8E8859BBFF8EF23002AC4DEDFC8C0DC6" box="[641,824,1188,1215]" county="Experta" latitude="21.14" longLatPrecision="75" longitude="104.942" municipality="Ban Coi" name="Tan Son district" pageId="1" pageNumber="561" stateProvince="Phu Tho">Tan Son district</location>
,
<collectingRegion id="4993C182FF8EF23003694DECFBA40DC6" box="[836,1040,1188,1214]" country="Vietnam" name="Phu Tho" pageId="1" pageNumber="561">Phu Tho Province</collectingRegion>
(
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,
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), coll.
<collectorName id="26A26AB6FF8EF230054B4DECFF620D9B" pageId="1" pageNumber="561">Khai Dang</collectorName>
,
<date id="FFE929A0FF8EF23000CC4D81FE380D9B" box="[225,396,1224,1251]" pageId="1" pageNumber="561" value="2023-03-18">
<collectingDate id="EFADD048FF8EF23000CC4D81FE380D9B" box="[225,396,1224,1251]" pageId="1" pageNumber="561" value="2023-03-18">18 March 2023</collectingDate>
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;
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(51 ×
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),
<materialsCitation id="3B3F053DFF8EF23002A14D81FAC90C7F" ID-GBIF-Occurrence="4846375304" collectingDate="2023-03-18" collectionCode="ZRC" collectorName="Cuong Do" county="Ban Coi" latitude="21.14" location="Tan Son district" longLatPrecision="75" longitude="104.942" municipality="Xuan Son National Park" pageId="1" pageNumber="561" specimenCode="ZRC 2024.0014" specimenCount="1" specimenCount-female="1" stateProvince="Phu Tho" typeStatus="paratype">
<specimenCount id="9D51C4E9FF8EF23002A14D81FD580D9A" box="[652,748,1224,1251]" count="1" pageId="1" pageNumber="561" type="female">1 female</specimenCount>
(43 ×
<quantity id="4CAFA285FF8EF230031F4D81FC350D9B" box="[818,897,1225,1251]" metricMagnitude="-2" metricUnit="m" metricValue="3.1" pageId="1" pageNumber="561" unit="mm" value="31.0">31 mm</quantity>
) (
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), main stream,
<collectingCounty id="628977ECFF8EF23004DA4D81FAE10D9A" box="[1271,1365,1224,1251]" pageId="1" pageNumber="561">Ban Coi</collectingCounty>
,
<collectingMunicipality id="6B8C951AFF8EF23005724D81FED30C7E" pageId="1" pageNumber="561">Xuan Son National Park</collectingMunicipality>
,
<location id="8E8859BBFF8EF230015F4DA5FD920C7E" LSID="urn:lsid:plazi:treatment:03FEBE76FF8EF23600BA4A9BFEBF0B61:8E8859BBFF8EF230015F4DA5FD920C7E" box="[370,550,1260,1287]" county="Ban Coi" latitude="21.14" longLatPrecision="75" longitude="104.942" municipality="Xuan Son National Park" name="Tan Son district" pageId="1" pageNumber="561" stateProvince="Phu Tho">Tan Son district</location>
,
<collectingRegion id="4993C182FF8EF230021C4DA4FD4F0C7E" box="[561,763,1260,1286]" country="Vietnam" name="Phu Tho" pageId="1" pageNumber="561">Phu Tho Province</collectingRegion>
(
<geoCoordinate id="EE6369A7FF8EF23003244DA5FCCE0C7F" box="[777,890,1261,1287]" degrees="21.140" direction="north" orientation="latitude" pageId="1" pageNumber="561" precision="55" value="21.14">21.140°N</geoCoordinate>
,
<geoCoordinate id="EE6369A7FF8EF23003A84DA5FBB50C7F" box="[901,1025,1261,1287]" degrees="104.942" direction="east" orientation="longitude" pageId="1" pageNumber="561" precision="55" value="104.942">104.942°E</geoCoordinate>
), coll.
<collectorName id="26A26AB6FF8EF23004614DA5FB770C7F" box="[1100,1219,1261,1287]" pageId="1" pageNumber="561">Cuong Do</collectorName>
,
<date id="FFE929A0FF8EF23004E34DA5FAC90C7F" box="[1230,1405,1260,1287]" pageId="1" pageNumber="561" value="2023-03-18">
<collectingDate id="EFADD048FF8EF23004E34DA5FAC90C7F" box="[1230,1405,1260,1287]" pageId="1" pageNumber="561" value="2023-03-18">18 March 2023</collectingDate>
</date>
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C34D5CEBFF8EF23000EA4C58FB4B0FCF" pageId="1" pageNumber="561" type="diagnosis">
<paragraph id="8BE80F60FF8EF23000EA4C58FB4B0FCF" blockId="1.[151,1437,1080,2043]" pageId="1" pageNumber="561">
<emphasis id="B923D372FF8EF23000EA4C58FEF60C52" bold="true" box="[199,322,1296,1322]" pageId="1" pageNumber="561">Diagnosis.</emphasis>
Carapace transversely ovate, broader than long, dorsal surface glabrous, nearly flat; regions indistinctly defined, frontal and orbital regions rugose, lateral parts of anterolateral and branchial regions granulose, anterolateral margin lined with granules (
<figureCitation id="136C13E5FF8EF23002704C10FD000C0B" box="[605,692,1368,1395]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1A</figureCitation>
). Cervical grooves shallow, not reaching lateral margins, connected to deep H-shaped median gastric groove (
<figureCitation id="136C13E5FF8EF23002434C34FD7C0CEF" box="[622,712,1404,1431]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1A</figureCitation>
). Frontal margin appearing entire in dorsal view, almost straight in frontal view (
<figureCitation id="136C13E5FF8EF23001674CE8FE770CC3" box="[330,451,1440,1467]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1A, B</figureCitation>
). Third maxilliped exopod with elongate and slender flagellum that reaches two-third of merus width (
<figureCitation id="136C13E5FF8EF230011E4C8CFE3A0CA7" box="[307,398,1476,1503]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="1" pageNumber="561">Fig. 2A</figureCitation>
). Outer surfaces of chela lined with prominent granules (
<figureCitation id="136C13E5FF8EF230043D4C8CFB3E0CA7" box="[1040,1162,1476,1503]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1D, E</figureCitation>
). Fingers of major chela short, stout, slightly curved inwards, subequal in length to palm, outer surface lined with nodules; cutting edges of both fingers with variously sized sharp teeth and denticles. Minor chela similar to major chela in form but relatively more slender (
<figureCitation id="136C13E5FF8EF230016D4F78FE5C0F33" box="[320,488,1584,1611]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1A, D, E</figureCitation>
). Male pleon triangular, lateral margin of sixth somite slightly convex, gradually decreasing in width, increasing in length. Telson broadly triangular, lateral margin slightly concave, almost straight, tip rounded (
<figureCitation id="136C13E5FF8EF23001084F30FEC80FEB" box="[293,380,1656,1683]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1C</figureCitation>
). G1 relatively stout, terminal segment slightly curved, subterminal segment about 3.3 times as long as terminal segment, G1 curving outwards. G2 elongate, strongly curved, much longer than G1.
</paragraph>
</subSubSection>
<subSubSection id="C34D5CEBFF8EF23400EA4F88FC1D0AE7" lastPageId="5" lastPageNumber="565" pageId="1" pageNumber="561" type="description">
<paragraph id="8BE80F60FF8EF23300EA4F88FB48081D" blockId="1.[151,1437,1080,2043]" lastBlockId="2.[151,1437,151,357]" lastPageId="2" lastPageNumber="562" pageId="1" pageNumber="561">
<emphasis id="B923D372FF8EF23000EA4F88FD8F0FA3" bold="true" box="[199,571,1728,1755]" pageId="1" pageNumber="561">
Description of
<typeStatus id="54ECB1C2FF8EF23001A94F89FE5F0FA3" box="[388,491,1729,1755]" pageId="1" pageNumber="561" type="holotype">holotype</typeStatus>
male:
</emphasis>
Carapace transversely ovate, markedly wider than long (width-to-length ratio 1.2); dorsal surface flat from the frontal view, glabrous, regions not prominent (
<figureCitation id="136C13E5FF8EF23004774FACFB000F87" box="[1114,1204,1764,1791]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1A</figureCitation>
). Frontal and orbital regions rugose; lateral parts of anterolateral and branchial regions granulose; mesogastric, urogastric, cardiac and intestinal regions smooth; suborbital region smooth; pterygostomial, subhepatic and subbranchial regions smooth to weakly granulose (
<figureCitation id="136C13E5FF8EF23001AB4E18FE680E13" box="[390,476,1872,1899]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1B</figureCitation>
). Epigastric cristae distinct, not sharp, weakly granulose, separated by narrow, median Y-shaped furrow; postorbital cristae distinct, margin uneven, slightly raised, subparallel to frontal margin, lateral edge relatively low and not prominent (
<figureCitation id="136C13E5FF8EF230027D4ED0FD1C0ECB" box="[592,680,1944,1971]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1A</figureCitation>
). Cervical grooves shallow, not reaching lateral margins, connected to deep H-shaped median gastric groove (
<figureCitation id="136C13E5FF8EF230025A4EF4FD660EAF" box="[631,722,1980,2007]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1A</figureCitation>
). Frontal margin almost straight, appears entire in dorsal view (
<figureCitation id="136C13E5FF8EF23000B24EA8FEA30E83" box="[159,279,2016,2043]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="1" pageNumber="561">Fig. 1A, B</figureCitation>
). External orbital tooth distinct, broadly triangular, demarcated from rest of anterolateral margin by deep V-shaped cleft; epibranchial tooth prominent, sharp (
<figureCitation id="136C13E5FF8DF23302DF49DFFCDB09C9" box="[754,879,151,177]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1A, B</figureCitation>
). Anterolateral margins convex, lined with sharp granules, weakly serrated (
<figureCitation id="136C13E5FF8DF23301E649F3FDFE09AD" box="[459,586,187,213]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1A, B</figureCitation>
). Posterolateral margin converging posteriorly (
<figureCitation id="136C13E5FF8DF233044249F3FB7E09AD" box="[1135,1226,187,213]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1A</figureCitation>
). Orbits subovate; eye filling orbital space, eye peduncle relatively short, stout; cornea large, round (
<figureCitation id="136C13E5FF8DF23304654997FB150981" box="[1096,1185,223,249]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1B</figureCitation>
). Supraorbital margin relatively straight (
<figureCitation id="136C13E5FF8DF233015C484BFE780865" box="[369,460,259,285]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1A</figureCitation>
). Suborbital margin concave, complete, lined with low granules (
<figureCitation id="136C13E5FF8DF23304EC484BFAAE0865" box="[1217,1306,259,285]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1B</figureCitation>
). Antennae short, stretching across base of eyes; antennules short, folding transversely in subrectangular fossae (
<figureCitation id="136C13E5FF8DF233051E486FFA3A0839" box="[1331,1422,295,321]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1B</figureCitation>
). Posterior margin of epistome sinuous with distinct median triangle, lateral margin sinuous (
<figureCitation id="136C13E5FF8DF23304BA4803FB5A081D" box="[1175,1262,331,357]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1B</figureCitation>
).
</paragraph>
<caption id="DF285FE8FF8DF23300B54C10FEC60CC0" ID-DOI="http://doi.org/10.5281/zenodo.10985592" ID-Zenodo-Dep="10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562" startId="2.[152,255,1368,1392]" targetBox="[151,1436,381,1345]" targetPageId="2" targetType="figure">
<paragraph id="8BE80F60FF8DF23300B54C10FEC60CC0" blockId="2.[151,1436,1368,1464]" pageId="2" pageNumber="562">
<emphasis id="B923D372FF8DF23300B54C10FEAD0C08" bold="true" box="[152,281,1368,1392]" pageId="2" pageNumber="562">FIGURE 1.</emphasis>
<taxonomicName id="4C5774E3FF8DF23301324C10FE520C08" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[287,486,1368,1392]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="562" phylum="Arthropoda" rank="species" species="datii" status="sp. nov.">
<emphasis id="B923D372FF8DF23301324C10FE520C08" box="[287,486,1368,1392]" italics="true" pageId="2" pageNumber="562">Indochinamon datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF8DF23301C04C10FD920C08" bold="true" box="[493,550,1368,1392]" pageId="2" pageNumber="562">
<taxonomicNameLabel id="A2106E09FF8DF23301C04C10FD920C08" box="[493,550,1368,1392]" pageId="2" pageNumber="562" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken).
</paragraph>
</caption>
<paragraph id="8BE80F60FF8DF23300EA4F42FD520FE8" blockId="2.[151,1437,1546,2041]" pageId="2" pageNumber="562">
Third maxillipeds covering most of buccal cavity when closed; ischium subrectangular with distinct median groove, surface glabrous with scattered shallow pits; merus subquadrate, slightly wider than long, surface smooth, margins cristate; exopod slender, reaching to about one-third length of merus, with elongate and slender flagellum that reaches two-thirds of the merus width (
<figureCitation id="136C13E5FF8DF23302524F3EFD6E0FE8" box="[639,730,1654,1680]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="2" pageNumber="562">Fig. 2A</figureCitation>
).
</paragraph>
<paragraph id="8BE80F60FF8DF23300EA4FD2FCCC0E3C" blockId="2.[151,1437,1546,2041]" pageId="2" pageNumber="562">
Thoracic sternum relatively broad, surface with scattered shallow pits and short notches (
<figureCitation id="136C13E5FF8DF233049C4FD2FABD0FCC" box="[1201,1289,1690,1716]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1C</figureCitation>
). Sternites 1, 2 merged completely to form broadly triangular plate; separated from sternite 3 by distinct, gently concave suture; sternites 3, 4 completely fused, with shallow incomplete groove demarcating suture (
<figureCitation id="136C13E5FF8DF233044D4FAAFB0E0F84" box="[1120,1210,1762,1788]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1A</figureCitation>
,
<figureCitation id="136C13E5FF8DF23304EA4FAAFB5F0F84" box="[1223,1259,1762,1788]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="2" pageNumber="562">2B</figureCitation>
). Sternopleonal cavity reaching to imaginary line joining median part of cheliped coxae. Male pleonal locking tubercle low, round, between the anterior and posterior margins of sternite 5 (
<figureCitation id="136C13E5FF8DF233033F4E62FCDF0E3C" box="[786,875,1834,1860]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="2" pageNumber="562">Fig. 2B</figureCitation>
).
</paragraph>
<paragraph id="8BE80F60FF8DF23200EA4E06FB0109AD" blockId="2.[151,1437,1546,2041]" lastBlockId="3.[151,1436,151,213]" lastPageId="3" lastPageNumber="563" pageId="2" pageNumber="562">
Chelipeds asymmetrical, right cheliped slightly larger (
<figureCitation id="136C13E5FF8DF23303684E06FC160E10" box="[837,930,1870,1896]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1A</figureCitation>
). Anterior margin of basis-ischium smooth; margins of merus lined with low sharp granules, appearing serrated. Outer surface of carpus rugose with granules, inner distal angle with large sharp tooth and basal tooth (
<figureCitation id="136C13E5FF8DF233032B4EDEFCE90EC8" box="[774,861,1942,1968]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1D</figureCitation>
). Outer surfaces of chelae strongly granulose, upper part rugose with granules, major chela stouter and shorter than minor chela (
<figureCitation id="136C13E5FF8DF23303C14EF2FBF10EAC" box="[1004,1093,1978,2004]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="2" pageNumber="562">Fig. 1A</figureCitation>
). Fingers of major chela short, stout, slightly curved inwards, subequal to palm, outer surface lined with nodules; cutting edges of both fingers with variously sized sharp teeth and denticles; dorsal margin of dactylus with prominent tubercles (
<figureCitation id="136C13E5FF8CF23204DE49DFFA2409C9" box="[1267,1424,151,177]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="3" pageNumber="563">Fig. 1A, D, E</figureCitation>
). Fingers of minor chela similar to major chela in form but relatively more slender (
<figureCitation id="136C13E5FF8CF232040249F3FB1D09AD" box="[1071,1193,187,213]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="3" pageNumber="563">Fig. 1A, E</figureCitation>
).
</paragraph>
<caption id="DF285FE8FF8CF23200B54C59FAB60C09" ID-DOI="http://doi.org/10.5281/zenodo.10985594" ID-Zenodo-Dep="10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="3" pageNumber="563" startId="3.[152,255,1297,1321]" targetBox="[151,1436,237,1274]" targetPageId="3" targetType="figure">
<paragraph id="8BE80F60FF8CF23200B54C59FAB60C09" blockId="3.[151,1436,1297,1393]" pageId="3" pageNumber="563">
<emphasis id="B923D372FF8CF23200B54C59FEA30C51" bold="true" box="[152,279,1297,1321]" pageId="3" pageNumber="563">FIGURE 2.</emphasis>
<taxonomicName id="4C5774E3FF8CF23201304C59FE560C51" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[285,482,1297,1321]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="3" pageNumber="563" phylum="Arthropoda" rank="species" species="datii" status="sp. nov.">
<emphasis id="B923D372FF8CF23201304C59FE560C51" box="[285,482,1297,1321]" italics="true" pageId="3" pageNumber="563">Indochinamon datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF8CF23201C54C59FD940C51" bold="true" box="[488,544,1297,1321]" pageId="3" pageNumber="563">
<taxonomicNameLabel id="A2106E09FF8CF23201C54C59FD940C51" box="[488,544,1297,1321]" pageId="3" pageNumber="563" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
holotype, male (61 × 49 mm) (VNMN 2022.001); A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2
<emphasis id="B923D372FF8CF232021B4C7EFDC00C35" box="[566,628,1334,1357]" italics="true" pageId="3" pageNumber="563">in situ</emphasis>
, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view.
</paragraph>
</caption>
<paragraph id="8BE80F60FF8CF23200EA4C8BFC5B0FEA" blockId="3.[151,1437,1475,2042]" pageId="3" pageNumber="563">
Ambulatory legs short, segments relatively stout; second pair longest (about 1.5 times longer than carapace width), last pair shortest (about 1.4 times longer than carapace width) (
<figureCitation id="136C13E5FF8CF23203814CAFFBB10F7A" box="[940,1029,1511,1538]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="3" pageNumber="563">Fig. 1A</figureCitation>
). Merus short, stout (length to width ratio: 3.5), outer surface rugose, dorsal margin uneven, subcristate, without subdistal spine or tooth; carpus rugose, dorsal margin with cristate, outer surface with low submedian cristate on first to third legs but absent on fourth legs; dorsal margin of propodus with cristate, outer surface with low, submedian cristate; dactylus relatively short, slender, nearly straight, margins with short, sharp pectinate spines (
<figureCitation id="136C13E5FF8CF23203A54F3FFC550FEA" box="[904,993,1655,1682]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="3" pageNumber="563">Fig. 1A</figureCitation>
).
</paragraph>
<paragraph id="8BE80F60FF8CF23200EA4FD3FC5E0E5A" blockId="3.[151,1437,1475,2042]" pageId="3" pageNumber="563">
Pleon narrowly triangular, all somites and telson free; telson broadly triangular, lateral margins nearly straight; somite 6 transversely rectangular, wider than long, lateral margin straight; somites 25 trapezoidal, gradually decreasing in width, increasing in length; somite 1 subrectangular, very wide, reaching to bases of coxae of fourth ambulatory legs, thoracic sternite 8 not visible when pleon closed (
<figureCitation id="136C13E5FF8CF23203A84E4FFC680E5A" box="[901,988,1799,1826]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="3" pageNumber="563">Fig. 1C</figureCitation>
).
</paragraph>
<paragraph id="8BE80F60FF8CF23200EA4E64FE850E82" blockId="3.[151,1437,1475,2042]" pageId="3" pageNumber="563">
G1 relatively stout; subterminal segment gently sinuous, about 3.3 times as long as terminal segment. Terminal segment broad, subconical, gently curved, gradually tapering to median part, slightly separated from subterminal segment, slightly inflated proximally, distal part tapered, gently curving outwards, tip pointed. Subterminal segment with thin cleft on distal part (
<figureCitation id="136C13E5FF8CF23201C44EDFFD3D0ECA" box="[489,649,1943,1970]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="3" pageNumber="563">Fig. 2B, D, E</figureCitation>
). G2 elongate, strongly curved, much longer than G1, basal segment longer than distal segment about 1.4 times, G2 base is nearly round, wide in the middle and slightly narrow to the top (
<figureCitation id="136C13E5FF8CF23200E74E97FE910E82" box="[202,293,2015,2042]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="3" pageNumber="563">Fig. 2H</figureCitation>
).
</paragraph>
<caption id="DF285FE8FF8BF23500B54A56FDD70A22" ID-DOI="http://doi.org/10.5281/zenodo.10985596" ID-Zenodo-Dep="10985596" httpUri="https://zenodo.org/record/10985596/files/figure.png" pageId="4" pageNumber="564" startId="4.[152,255,798,822]" targetBox="[151,1435,181,774]" targetPageId="4" targetType="figure">
<paragraph id="8BE80F60FF8BF23500B54A56FDD70A22" blockId="4.[151,1436,798,858]" pageId="4" pageNumber="564">
<emphasis id="B923D372FF8BF23500B54A56FEAD0A4E" bold="true" box="[152,281,798,822]" pageId="4" pageNumber="564">FIGURE 3.</emphasis>
<taxonomicName id="4C5774E3FF8BF235010D4A56FE530A4E" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[288,487,798,822]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="564" phylum="Arthropoda" rank="species" species="datii" status="sp. nov.">
<emphasis id="B923D372FF8BF235010D4A56FE530A4E" box="[288,487,798,822]" italics="true" pageId="4" pageNumber="564">Indochinamon datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF8BF23501C24A56FD9C0A4E" bold="true" box="[495,552,798,822]" pageId="4" pageNumber="564">
<taxonomicNameLabel id="A2106E09FF8BF23501C24A56FD9C0A4E" box="[495,552,798,822]" pageId="4" pageNumber="564" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
paratype, female (60 × 47 mm) (Experta collection 2023.003); A, pleon, ventral view; B, thoracic sternum and vulvae, ventral view.
</paragraph>
</caption>
<caption id="DF285FE8FF8BF23500B54E27FE330E8B" ID-DOI="http://doi.org/10.5281/zenodo.10985598" ID-Zenodo-Dep="10985598" httpUri="https://zenodo.org/record/10985598/files/figure.png" pageId="4" pageNumber="564" startId="4.[152,255,1903,1927]" targetBox="[151,1435,883,1880]" targetPageId="4" targetType="figure">
<paragraph id="8BE80F60FF8BF23500B54E27FE330E8B" blockId="4.[151,1437,1903,2035]" pageId="4" pageNumber="564">
<emphasis id="B923D372FF8BF23500B54E27FEAC0EFF" bold="true" box="[152,280,1903,1927]" pageId="4" pageNumber="564">FIGURE 4.</emphasis>
<taxonomicName id="4C5774E3FF8BF23501334E27FE510EFF" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[286,485,1903,1927]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="564" phylum="Arthropoda" rank="species" species="datii" status="sp. nov.">
<emphasis id="B923D372FF8BF23501334E27FE510EFF" box="[286,485,1903,1927]" italics="true" pageId="4" pageNumber="564">Indochinamon datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF8BF23501C64E38FD900EF0" bold="true" box="[491,548,1904,1928]" pageId="4" pageNumber="564">
<taxonomicNameLabel id="A2106E09FF8BF23501C64E38FD900EF0" box="[491,548,1904,1928]" pageId="4" pageNumber="564" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, colour in life. A, brownish-green form, dorsal view, male, from type locality, specimen not collected; B, brownish-green form, frontal view, male, from type locality, specimen not collected; C, yellowish-orange form, dorsal view, male, from type locality, specimen not collected; D, yellowish-orange form, frontal view, male, from type locality, specimen not collected.
</paragraph>
</caption>
<caption id="DF285FE8FF8AF23400B54BE6FD920B93" ID-DOI="http://doi.org/10.5281/zenodo.10985600" ID-Zenodo-Dep="10985600" httpUri="https://zenodo.org/record/10985600/files/figure.png" pageId="5" pageNumber="565" startId="5.[152,255,686,710]" targetBox="[151,1435,181,663]" targetPageId="5" targetType="figure">
<paragraph id="8BE80F60FF8AF23400B54BE6FD920B93" blockId="5.[151,1437,686,747]" pageId="5" pageNumber="565">
<emphasis id="B923D372FF8AF23400B54BE6FEAD0BBF" bold="true" box="[152,281,686,711]" pageId="5" pageNumber="565">FIGURE 5.</emphasis>
Habitat of
<taxonomicName id="4C5774E3FF8AF23401A04BE7FDE00BBF" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[397,596,687,711]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="datii" status="sp. nov.">
<emphasis id="B923D372FF8AF23401A04BE7FDE00BBF" box="[397,596,687,711]" italics="true" pageId="5" pageNumber="565">Indochinamon datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF8AF23402764BE7FD210BBF" bold="true" box="[603,661,687,711]" pageId="5" pageNumber="565">
<taxonomicNameLabel id="A2106E09FF8AF23402764BE7FD210BBF" box="[603,661,687,711]" pageId="5" pageNumber="565" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
in Xuan Son National Park. A, during the dry season on 18 March 2023; B, during the rainy season on 9 July 2022.
</paragraph>
</caption>
<paragraph id="8BE80F60FF8AF23400EA4A75FC1D0AE7" blockId="5.[151,1437,829,2044]" pageId="5" pageNumber="565">
<emphasis id="B923D372FF8AF23400EA4A75FD8F0A2F" bold="true" box="[199,571,829,855]" pageId="5" pageNumber="565">
Description of
<typeStatus id="54ECB1C2FF8AF234015E4A75FE6A0A2F" box="[371,478,829,855]" pageId="5" pageNumber="565" type="paratype">paratype</typeStatus>
female:
</emphasis>
Female with similar external morphological features to males. Pleon subovate, wide, covers entire thoracic sternum when closed (
<figureCitation id="136C13E5FF8AF23402F74A29FC810A03" box="[730,821,865,891]" captionStart="FIGURE 3" captionStartId="4.[152,255,798,822]" captionTargetBox="[151,1435,181,774]" captionTargetId="figure-17@4.[151,1435,181,774]" captionTargetPageId="4" captionText="FIGURE 3. Indochinamon datii n. sp. paratype, female (60 × 47 mm) (Experta collection 2023.003); A, pleon, ventral view; B, thoracic sternum and vulvae, ventral view." figureDoi="http://doi.org/10.5281/zenodo.10985596" httpUri="https://zenodo.org/record/10985596/files/figure.png" pageId="5" pageNumber="565">Fig. 3A</figureCitation>
). Female vulvae on thoracic sternite 5/6, subquadrate, opening directed mesially, opening covered with membrane (
<figureCitation id="136C13E5FF8AF23403694ACDFC2F0AE7" box="[836,923,901,927]" captionStart="FIGURE 3" captionStartId="4.[152,255,798,822]" captionTargetBox="[151,1435,181,774]" captionTargetId="figure-17@4.[151,1435,181,774]" captionTargetPageId="4" captionText="FIGURE 3. Indochinamon datii n. sp. paratype, female (60 × 47 mm) (Experta collection 2023.003); A, pleon, ventral view; B, thoracic sternum and vulvae, ventral view." figureDoi="http://doi.org/10.5281/zenodo.10985596" httpUri="https://zenodo.org/record/10985596/files/figure.png" pageId="5" pageNumber="565">Fig. 3B</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="C34D5CEBFF8AF23400EA4AE1FCE20FCF" pageId="5" pageNumber="565" type="etymology">
<paragraph id="8BE80F60FF8AF23400EA4AE1FCE10A9F" blockId="5.[151,1437,829,2044]" pageId="5" pageNumber="565">
<emphasis id="B923D372FF8AF23400EA4AE1FEE60ABB" bold="true" box="[199,338,937,963]" pageId="5" pageNumber="565">Etymology:</emphasis>
The species is named after Mr. Dat Pham (
<collectingRegion id="4993C182FF8AF234037E4AE1FC280ABB" box="[851,924,937,963]" country="Vietnam" name="Ha Noi" pageId="5" pageNumber="565">Hanoi</collectingRegion>
,
<collectingCountry id="F3404FF0FF8AF23403844AE1FBB80ABB" box="[937,1036,937,963]" name="Vietnam" pageId="5" pageNumber="565">Vietnam</collectingCountry>
), who is an active member of this research team involved in both field trips and laboratory work.
</paragraph>
<paragraph id="8BE80F60FF8AF23400EA4AB9FD940D0F" blockId="5.[151,1437,829,2044]" pageId="5" pageNumber="565">
<emphasis id="B923D372FF8AF23400EA4AB9FE200D73" bold="true" box="[199,404,1009,1035]" pageId="5" pageNumber="565">Live colouration:</emphasis>
The crabs usually display two main colour morphs: brownish-green with light orange margin and yellowish-orange (
<figureCitation id="136C13E5FF8AF23401B24D5DFE530D57" box="[415,487,1045,1071]" captionStart="FIGURE 4" captionStartId="4.[152,255,1903,1927]" captionTargetBox="[151,1435,883,1880]" captionTargetId="figure-48@4.[151,1435,883,1880]" captionTargetPageId="4" captionText="FIGURE 4. Indochinamon datii n. sp., colour in life. A, brownish-green form, dorsal view, male, from type locality, specimen not collected; B, brownish-green form, frontal view, male, from type locality, specimen not collected; C, yellowish-orange form, dorsal view, male, from type locality, specimen not collected; D, yellowish-orange form, frontal view, male, from type locality, specimen not collected." figureDoi="http://doi.org/10.5281/zenodo.10985598" httpUri="https://zenodo.org/record/10985598/files/figure.png" pageId="5" pageNumber="565">Fig. 4</figureCitation>
), several intermediate colour form are reported. There is no distinct difference in morphology between individuals of different colours. Similar colour variation also can be seen in other species of
<taxonomicName id="4C5774E3FF8AF23400BA4D15FDA80D0F" authority="(Zhang et al. 2020)" baseAuthorityName="Zhang" baseAuthorityYear="2020" box="[151,540,1117,1143]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="genus">
<emphasis id="B923D372FF8AF23400BA4D15FE8D0D0F" box="[151,313,1117,1143]" italics="true" pageId="5" pageNumber="565">Indochinamon</emphasis>
(
<bibRefCitation id="EFC67291FF8AF234016A4D15FDA00D0F" author="Zhang, Z. &amp; Pan, D. &amp; Hao, X. &amp; Sun, H." box="[327,532,1117,1143]" pageId="5" pageNumber="565" pagination="1 - 21" refId="ref6780" refString="Zhang, Z., Pan, D., Hao, X. &amp; Sun, H. (2020) Two new species of freshwater crabs of the genera Eosamon Yeo &amp; Ng, 2007 and Indochinamon Yeo &amp; Ng, 2007 (Crustacea, Brachyura, Potamidae) from southern Yunnan, China. Zookeys, 980, 1 - 21. https: // doi. org / 10.3897 / zookeys. 980.52186" type="journal article" year="2020">
Zhang
<emphasis id="B923D372FF8AF23401B54D16FE7D0D0F" box="[408,457,1117,1143]" italics="true" pageId="5" pageNumber="565">et al</emphasis>
. 2020
</bibRefCitation>
)
</taxonomicName>
.
</paragraph>
<paragraph id="8BE80F60FF8AF23400EA4DC9FCE20FCF" blockId="5.[151,1437,829,2044]" pageId="5" pageNumber="565">
<emphasis id="B923D372FF8AF23400EA4DC9FE980DE3" bold="true" box="[199,300,1153,1179]" pageId="5" pageNumber="565">Habitat:</emphasis>
The stream in Xuan Son National Park from where the specimens were collected is a fast-flowing stream in the rainy season. The substrate consists of rocks of different sizes with a sandy bank, mixed with pebbles of various sizes, and driftwood. Trees, ferns, and vines that grow along the banks of the stream. Another smaller branch of the stream has slow-flowing water, many aquatic and semi-aquatic plants grow on rocks or in the stream bed including
<taxonomicName id="4C5774E3FF8AF23401174C59FE250C53" box="[314,401,1297,1323]" class="Polypodiopsida" family="Dryopteridaceae" genus="Bolbitis" kingdom="Plantae" order="Polypodiales" pageId="5" pageNumber="565" phylum="Tracheophyta" rank="genus">
<emphasis id="B923D372FF8AF23401174C59FE250C53" box="[314,401,1297,1323]" italics="true" pageId="5" pageNumber="565">Bolbitis</emphasis>
</taxonomicName>
ferns, watercress, and aroids (
<figureCitation id="136C13E5FF8AF23402C34C59FCF30C54" box="[750,839,1297,1324]" captionStart="FIGURE 5" captionStartId="5.[152,255,686,710]" captionTargetBox="[151,1435,181,663]" captionTargetId="figure-21@5.[151,1435,181,663]" captionTargetPageId="5" captionText="FIGURE 5. Habitat of Indochinamon datii n. sp. in Xuan Son National Park. A, during the dry season on 18 March 2023; B, during the rainy season on 9 July 2022." figureDoi="http://doi.org/10.5281/zenodo.10985600" httpUri="https://zenodo.org/record/10985600/files/figure.png" pageId="5" pageNumber="565">Fig. 5B</figureCitation>
). In the dry season, the water in both branches dries up, revealing the rocky bottom with large fallen tree trunks. Only a few pools remain, fed by small and slow-flowing streamlets (
<figureCitation id="136C13E5FF8AF234015B4C11FE640C0C" box="[374,464,1369,1396]" captionStart="FIGURE 5" captionStartId="5.[152,255,686,710]" captionTargetBox="[151,1435,181,663]" captionTargetId="figure-21@5.[151,1435,181,663]" captionTargetPageId="5" captionText="FIGURE 5. Habitat of Indochinamon datii n. sp. in Xuan Son National Park. A, during the dry season on 18 March 2023; B, during the rainy season on 9 July 2022." figureDoi="http://doi.org/10.5281/zenodo.10985600" httpUri="https://zenodo.org/record/10985600/files/figure.png" pageId="5" pageNumber="565">Fig. 5A</figureCitation>
). This species also occurs in other streams in the National Park. Other syntopic species found in the stream include gobies (
<taxonomicName id="4C5774E3FF8AF23402144C35FD460CEF" box="[569,754,1405,1431]" family="Gobiidae" genus="Rhinogobius" kingdom="Animalia" order="Perciformes" pageId="5" pageNumber="565" phylum="Chordata" rank="species" species="undetermined">
<emphasis id="B923D372FF8AF23402144C35FD730CEF" box="[569,711,1405,1431]" italics="true" pageId="5" pageNumber="565">Rhinogobius</emphasis>
sp.
</taxonomicName>
), loaches (
<taxonomicName id="4C5774E3FF8AF234035C4C35FBA10CEF" box="[881,1045,1405,1431]" family="Nemacheilidae" genus="Schistura" kingdom="Animalia" order="Cypriniformes" pageId="5" pageNumber="565" phylum="Chordata" rank="species" species="undetermined">
<emphasis id="B923D372FF8AF234035C4C35FC6F0CEF" box="[881,987,1405,1431]" italics="true" pageId="5" pageNumber="565">Schistura</emphasis>
spp.
</taxonomicName>
), snakeheads (
<taxonomicName id="4C5774E3FF8AF23404924C35FAF70CEF" box="[1215,1347,1405,1431]" family="Channidae" genus="Channa" kingdom="Animalia" order="Perciformes" pageId="5" pageNumber="565" phylum="Chordata" rank="species" species="undetermined">
<emphasis id="B923D372FF8AF23404924C35FAAC0CEF" box="[1215,1304,1405,1431]" italics="true" pageId="5" pageNumber="565">Channa</emphasis>
sp.
</taxonomicName>
), dwarf shrimps (
<taxonomicName id="4C5774E3FF8AF23400D24CE9FE280CC3" box="[255,412,1441,1467]" class="Malacostraca" family="Atyidae" genus="Caridina" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="undetermined">
<emphasis id="B923D372FF8AF23400D24CE9FED00CC3" box="[255,356,1441,1467]" italics="true" pageId="5" pageNumber="565">Caridina</emphasis>
spp.
</taxonomicName>
), freshwater prawns (
<taxonomicName id="4C5774E3FF8AF23402A14CE9FCCC0CC3" box="[652,888,1441,1467]" class="Malacostraca" family="Palaemonidae" genus="Macrobrachium" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="undetermined">
<emphasis id="B923D372FF8AF23402A14CE9FCF50CC3" box="[652,833,1441,1467]" italics="true" pageId="5" pageNumber="565">Macrobrachium</emphasis>
spp.
</taxonomicName>
),
<taxonomicName id="4C5774E3FF8AF23403A14CE9FABB0CC3" authority="(Dang, 1967)" baseAuthorityName="Dang" baseAuthorityYear="1967" box="[908,1295,1441,1467]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="mieni">
<emphasis id="B923D372FF8AF23403A14CE9FBC50CC3" box="[908,1137,1441,1467]" italics="true" pageId="5" pageNumber="565">Indochinamon mieni</emphasis>
(Dang, 1967)
</taxonomicName>
, pachychilid snails, aquatic and semi-aquatic insects of
<taxonomicName id="4C5774E3FF8AF23402AE4C8DFADD0CA7" authority=", Hemiptera, Odonata, Ephemeroptera and Plecoptera." authorityName="Hemiptera, Odonata, Ephemeroptera and Plecoptera." box="[643,1385,1477,1503]" class="Malacostraca" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="5" pageNumber="565" phylum="Arthropoda" rank="order">Coleoptera, Hemiptera, Odonata, Ephemeroptera and Plecoptera.</taxonomicName>
The population of this crab is large and stable due to its wide distribution in a well-protected area and clean water quality was observed during 2 years of fieldwork and surveys conducted by the locals in the national park despite being frequently captured for food and sold to tourists by locals. Locals capture the crabs using a long stick baited with worms to lure the crabs out of the rock crevices.Adults often hide in rock crevices in stream beds and are sometimes found scuttling on the forest floor at night. Young individuals usually live in areas with slow-moving water. This species usually feeds at night and is rarely seen during the day.
</paragraph>
</subSubSection>
<subSubSection id="C34D5CEBFF8AF23600EA4F89FEBF0B61" lastPageId="7" lastPageNumber="567" pageId="5" pageNumber="565" type="discussion">
<paragraph id="8BE80F60FF8AF23700EA4F89FDEC08A9" blockId="5.[151,1437,829,2044]" lastBlockId="6.[151,1437,150,465]" lastPageId="6" lastPageNumber="566" pageId="5" pageNumber="565">
<emphasis id="B923D372FF8AF23400EA4F89FE8F0FA3" bold="true" box="[199,315,1729,1755]" pageId="5" pageNumber="565">Remarks.</emphasis>
The new species is most similar to
<taxonomicName id="4C5774E3FF8AF23402FC4F8AFBB20FA3" authority="(Dang, 1967)" baseAuthorityName="Dang" baseAuthorityYear="1967" box="[721,1030,1729,1755]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="kimboiense">
<emphasis id="B923D372FF8AF23402FC4F8AFD6E0FA3" box="[721,730,1730,1755]" italics="true" pageId="5" pageNumber="565">I</emphasis>
.
<emphasis id="B923D372FF8AF23402C74F89FCDC0FA3" box="[746,872,1729,1755]" italics="true" pageId="5" pageNumber="565">kimboiense</emphasis>
(Dang, 1967)
</taxonomicName>
and
<taxonomicName id="4C5774E3FF8AF23404134F8AFF650F87" authority="Naruse, Nguyen &amp; Yeo, 2011" authorityName="Naruse, Nguyen &amp; Yeo" authorityYear="2011" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="bavi">
<emphasis id="B923D372FF8AF23404134F8AFBF30FA3" box="[1086,1095,1730,1755]" italics="true" pageId="5" pageNumber="565">I</emphasis>
.
<emphasis id="B923D372FF8AF234047B4F89FB320FA3" box="[1110,1158,1729,1755]" italics="true" pageId="5" pageNumber="565">bavi</emphasis>
<bibRefCitation id="EFC67291FF8AF23404A34F89FF650F87" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." pageId="5" pageNumber="565" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">Naruse, Nguyen &amp; Yeo, 2011</bibRefCitation>
</taxonomicName>
, due to the shape of the carapace and strong granulation on the dorsal surface of carapace and chelipeds (
<figureCitation id="136C13E5FF8AF23405424FADFF4B0E5B" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="5" pageNumber="565">Fig. 1A, D, E</figureCitation>
; cf.
<bibRefCitation id="EFC67291FF8AF23401024E41FDB50E5B" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[303,513,1801,1827]" pageId="5" pageNumber="565" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF8AF23401AB4E42FE030E5B" box="[390,439,1801,1827]" italics="true" pageId="5" pageNumber="565">et al</emphasis>
. 2011
</bibRefCitation>
: figs. 1A, 2B, 4A, 5B).
<taxonomicName id="4C5774E3FF8AF23403204E41FC5D0E5B" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[781,1001,1801,1827]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="datii" status="sp. nov.">
<emphasis id="B923D372FF8AF23403204E41FC5D0E5B" box="[781,1001,1801,1827]" italics="true" pageId="5" pageNumber="565">Indochinamon datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF8AF23403DC4E41FB840E5B" bold="true" box="[1009,1072,1801,1827]" pageId="5" pageNumber="565">
<taxonomicNameLabel id="A2106E09FF8AF23403DC4E41FB840E5B" box="[1009,1072,1801,1827]" pageId="5" pageNumber="565" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
can be distinguished from these two species by the following: 1)
<taxonomicName id="4C5774E3FF8AF234022B4E66FDE50E3F" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[518,593,1837,1863]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="datii" status="n. sp.">
<emphasis id="B923D372FF8AF234022B4E66FDBB0E3F" box="[518,527,1838,1863]" italics="true" pageId="5" pageNumber="565">I</emphasis>
.
<emphasis id="B923D372FF8AF23402334E65FDE50E3F" box="[542,593,1837,1863]" italics="true" pageId="5" pageNumber="565">datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF8AF23402754E65FD230E3F" bold="true" box="[600,663,1837,1863]" pageId="5" pageNumber="565">
<taxonomicNameLabel id="A2106E09FF8AF23402754E65FD230E3F" box="[600,663,1837,1863]" pageId="5" pageNumber="565" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
has more grannulose carapace on the dorsal and frontal surface (
<figureCitation id="136C13E5FF8AF23405424E65FF0D0E13" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="5" pageNumber="565">Fig. 1A</figureCitation>
) than
<taxonomicName id="4C5774E3FF8AF234012F4E1AFEFE0E13" authorityName="Naruse, Nguyen &amp; Yeo" authorityYear="2011" box="[258,330,1873,1899]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="bavi">
<emphasis id="B923D372FF8AF234012F4E1AFEBF0E13" box="[258,267,1874,1899]" italics="true" pageId="5" pageNumber="565">I</emphasis>
.
<emphasis id="B923D372FF8AF23401374E19FEFE0E13" box="[282,330,1873,1899]" italics="true" pageId="5" pageNumber="565">bavi</emphasis>
</taxonomicName>
(cf.
<bibRefCitation id="EFC67291FF8AF23401AD4E19FDE60E13" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[384,594,1873,1899]" pageId="5" pageNumber="565" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF8AF23401FA4E1AFDBC0E13" box="[471,520,1873,1899]" italics="true" pageId="5" pageNumber="565">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 4A) but less prominent than
<taxonomicName id="4C5774E3FF8AF23403E04E1AFBD70E13" baseAuthorityName="Dang" baseAuthorityYear="1967" box="[973,1123,1873,1899]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="kimboiense">
<emphasis id="B923D372FF8AF23403E04E1AFC620E13" box="[973,982,1874,1899]" italics="true" pageId="5" pageNumber="565">I</emphasis>
.
<emphasis id="B923D372FF8AF23403C84E19FBD70E13" box="[997,1123,1873,1899]" italics="true" pageId="5" pageNumber="565">kimboiense</emphasis>
</taxonomicName>
(cf.
<bibRefCitation id="EFC67291FF8AF23404B44E19FADF0E13" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[1177,1387,1873,1899]" pageId="5" pageNumber="565" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF8AF23404DD4E1AFA950E13" box="[1264,1313,1873,1899]" italics="true" pageId="5" pageNumber="565">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 1A); 2) the dorsal carapace regions are less defined in
<taxonomicName id="4C5774E3FF8AF23402D54E3EFCF60EF7" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[760,834,1909,1935]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="datii" status="n. sp.">
<emphasis id="B923D372FF8AF23402D54E3EFCB50EF7" box="[760,769,1910,1935]" italics="true" pageId="5" pageNumber="565">I</emphasis>
.
<emphasis id="B923D372FF8AF23403224E3DFCF60EF7" box="[783,834,1909,1935]" italics="true" pageId="5" pageNumber="565">datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF8AF23403644E3DFC3C0EF7" bold="true" box="[841,904,1909,1935]" pageId="5" pageNumber="565">
<taxonomicNameLabel id="A2106E09FF8AF23403644E3DFC3C0EF7" box="[841,904,1909,1935]" pageId="5" pageNumber="565" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
(
<figureCitation id="136C13E5FF8AF23403BA4E3DFC590EF7" box="[919,1005,1909,1935]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="5" pageNumber="565">Fig. 1A</figureCitation>
) than in the two other species (
<bibRefCitation id="EFC67291FF8AF23405664E3DFEA70ECB" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." pageId="5" pageNumber="565" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF8AF23400BA4ED2FF640ECB" box="[151,208,1945,1971]" italics="true" pageId="5" pageNumber="565">et al.</emphasis>
2011
</bibRefCitation>
: figs. 1A, 4A); 3) the dorsal surface of the new species is relatively flatter (
<figureCitation id="136C13E5FF8AF234044A4ED1FB090ECB" box="[1127,1213,1945,1971]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="5" pageNumber="565">Fig. 1B</figureCitation>
) than
<taxonomicName id="4C5774E3FF8AF234052B4ED2FA280ECB" baseAuthorityName="Dang" baseAuthorityYear="1967" box="[1286,1436,1945,1971]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="kimboiense">
<emphasis id="B923D372FF8AF234052B4ED2FABB0ECB" box="[1286,1295,1946,1971]" italics="true" pageId="5" pageNumber="565">I</emphasis>
.
<emphasis id="B923D372FF8AF23405334ED1FA280ECB" box="[1310,1436,1945,1971]" italics="true" pageId="5" pageNumber="565">kimboiense</emphasis>
</taxonomicName>
(cf.
<bibRefCitation id="EFC67291FF8AF23400E84EF5FE2C0EAF" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[197,408,1981,2007]" pageId="5" pageNumber="565" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF8AF23401314EF6FEFB0EAF" box="[284,335,1981,2007]" italics="true" pageId="5" pageNumber="565">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 2A), while that of
<taxonomicName id="4C5774E3FF8AF23402894EF6FD580EAF" authorityName="Naruse, Nguyen &amp; Yeo" authorityYear="2011" box="[676,748,1981,2007]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="bavi">
<emphasis id="B923D372FF8AF23402894EF6FD580EAF" box="[676,748,1981,2007]" italics="true" pageId="5" pageNumber="565">I. bavi</emphasis>
</taxonomicName>
is slightly convex longitudinally (cf.
<bibRefCitation id="EFC67291FF8AF23404BA4EF5FADE0EAF" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[1175,1386,1981,2007]" pageId="5" pageNumber="565" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF8AF23404C34EF6FA950EAF" box="[1262,1313,1981,2007]" italics="true" pageId="5" pageNumber="565">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 5A); 4) the frontal margin is nearly straight (
<figureCitation id="136C13E5FF8AF23402A64EA9FD560E83" box="[651,738,2017,2043]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="5" pageNumber="565">Fig. 1B</figureCitation>
), while that of
<taxonomicName id="4C5774E3FF8AF23403A04EAAFC600E83" authorityName="Naruse, Nguyen &amp; Yeo" authorityYear="2011" box="[909,980,2017,2043]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="565" phylum="Arthropoda" rank="species" species="bavi">
<emphasis id="B923D372FF8AF23403A04EAAFC600E83" box="[909,980,2017,2043]" italics="true" pageId="5" pageNumber="565">I. bavi</emphasis>
</taxonomicName>
is gently convex (cf.
<bibRefCitation id="EFC67291FF8AF23404E54EA9FA2C0E83" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[1224,1432,2017,2043]" pageId="5" pageNumber="565" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF8AF23405334EAAFAE40E83" box="[1310,1360,2017,2043]" italics="true" pageId="5" pageNumber="565">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 5A) and that of
<taxonomicName id="4C5774E3FF89F237015649DFFDA609C9" baseAuthorityName="Dang" baseAuthorityYear="1967" box="[379,530,151,177]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="566" phylum="Arthropoda" rank="species" species="kimboiense">
<emphasis id="B923D372FF89F237015649DFFDA609C9" box="[379,530,151,177]" italics="true" pageId="6" pageNumber="566">I. kimboiense</emphasis>
</taxonomicName>
is gently sinuous (cf.
<bibRefCitation id="EFC67291FF89F237032249DFFC5709C9" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[783,995,151,177]" pageId="6" pageNumber="566" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF89F237034B49DFFC2D09C9" box="[870,921,151,177]" italics="true" pageId="6" pageNumber="566">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 2A); 5) the male telson is broadly triangular with the lateral margins nearly straight (
<figureCitation id="136C13E5FF89F23702E349F3FC9B09AD" box="[718,815,187,213]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="6" pageNumber="566">Figs. 1C</figureCitation>
,
<figureCitation id="136C13E5FF89F237031049F3FCEA09AD" box="[829,862,187,213]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="6" pageNumber="566">2C</figureCitation>
) while it is broadly triangular, with lateral margins slightly concave in
<taxonomicName id="4C5774E3FF89F23701434997FDB70981" baseAuthorityName="Dang" baseAuthorityYear="1967" box="[366,515,223,249]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="566" phylum="Arthropoda" rank="species" species="kimboiense">
<emphasis id="B923D372FF89F23701434997FDB70981" box="[366,515,223,249]" italics="true" pageId="6" pageNumber="566">I. kimboiense</emphasis>
</taxonomicName>
(cf.
<bibRefCitation id="EFC67291FF89F23702184997FCB60981" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[565,770,223,249]" pageId="6" pageNumber="566" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF89F23702A74997FD0E0981" box="[650,698,223,249]" italics="true" pageId="6" pageNumber="566">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 1B), the telson of
<taxonomicName id="4C5774E3FF89F23703D04997FBF20981" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[1021,1094,223,249]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="566" phylum="Arthropoda" rank="species" species="datii" status="n. sp.">
<emphasis id="B923D372FF89F23703D04997FBF20981" box="[1021,1094,223,249]" italics="true" pageId="6" pageNumber="566">I. datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF89F23704614997FB3E0981" bold="true" box="[1100,1162,223,249]" pageId="6" pageNumber="566">
<taxonomicNameLabel id="A2106E09FF89F23704614997FB3E0981" box="[1100,1162,223,249]" pageId="6" pageNumber="566" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
is relatively shorter than that of
<taxonomicName id="4C5774E3FF89F23700C8484BFE980865" authorityName="Naruse, Nguyen &amp; Yeo" authorityYear="2011" box="[229,300,259,285]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="566" phylum="Arthropoda" rank="species" species="bavi">
<emphasis id="B923D372FF89F23700C8484BFE980865" box="[229,300,259,285]" italics="true" pageId="6" pageNumber="566">I. bavi</emphasis>
</taxonomicName>
(
<figureCitation id="136C13E5FF89F2370116484BFE280865" box="[315,412,259,285]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="6" pageNumber="566">Figs. 1C</figureCitation>
,
<figureCitation id="136C13E5FF89F2370185484BFE780865" box="[424,460,259,285]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="6" pageNumber="566">2C</figureCitation>
), (cf.
<bibRefCitation id="EFC67291FF89F2370221484BFD6F0865" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[524,731,259,285]" pageId="6" pageNumber="566" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF89F237024F484BFD270865" box="[610,659,259,285]" italics="true" pageId="6" pageNumber="566">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 4B). The G1 characteristics of all three species are similar, however the G1 of
<taxonomicName id="4C5774E3FF89F2370140486FFE020839" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[365,438,295,321]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="566" phylum="Arthropoda" rank="species" species="datii" status="n. sp.">
<emphasis id="B923D372FF89F2370140486FFE020839" box="[365,438,295,321]" italics="true" pageId="6" pageNumber="566">I. datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF89F2370190486FFE4F0839" bold="true" box="[445,507,295,321]" pageId="6" pageNumber="566">
<taxonomicNameLabel id="A2106E09FF89F2370190486FFE4F0839" box="[445,507,295,321]" pageId="6" pageNumber="566" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
is more slender and curved (
<figureCitation id="136C13E5FF89F2370316486FFC040839" box="[827,944,295,321]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="6" pageNumber="566">Fig. 2D, E</figureCitation>
) than those of the other two species, and the soft joint between the two segments of the new species is also more constricted (
<figureCitation id="136C13E5FF89F237040D4803FB22081D" box="[1056,1174,331,357]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="6" pageNumber="566">Fig. 2D, E</figureCitation>
) while that in the other two species narrowed steadily to the terminal segment (cf.
<bibRefCitation id="EFC67291FF89F237031E4827FBB208F1" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[819,1030,367,393]" pageId="6" pageNumber="566" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF89F23703A74827FC0808F1" box="[906,956,367,393]" italics="true" pageId="6" pageNumber="566">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 3A, B, D, E). Furthermore, the G1 terminal segment is slightly curved in
<taxonomicName id="4C5774E3FF89F237024648DBFD0108D5" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[619,693,403,429]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="566" phylum="Arthropoda" rank="species" species="datii" status="n. sp.">
<emphasis id="B923D372FF89F237024648DBFD0108D5" box="[619,693,403,429]" italics="true" pageId="6" pageNumber="566">I. datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF89F237029148DBFD4E08D5" bold="true" box="[700,762,403,429]" pageId="6" pageNumber="566">
<taxonomicNameLabel id="A2106E09FF89F237029148DBFD4E08D5" box="[700,762,403,429]" pageId="6" pageNumber="566" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
(
<figureCitation id="136C13E5FF89F237032748DBFC3408D5" box="[778,896,403,429]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="6" pageNumber="566">Fig. 2D, E</figureCitation>
) (versus nearly straight in the two other species; cf.
<bibRefCitation id="EFC67291FF89F237009648FFFE3F08A9" author="Naruse, T. &amp; Nguyen, X. Q. &amp; Yeo, D. C. J." box="[187,395,439,465]" pageId="6" pageNumber="566" pagination="33 - 48" refId="ref6064" refString="Naruse, T., Nguyen, X. Q. &amp; Yeo, D. C. J. (2011) Three new species of Indochinamon (Crustacea: Decapoda: Potamidae: Potamiscinae) from Vietnam, with a redescription of Ranguna (Ranguna) kimboiensis Dang, 1975. Zootaxa, 2732 (1), 33 - 48. https: // doi. org / 10.11646 / zootaxa. 2732.1.3" type="journal article" year="2011">
Naruse
<emphasis id="B923D372FF89F237013C48FFFEF608A9" box="[273,322,439,465]" italics="true" pageId="6" pageNumber="566">et al</emphasis>
. 2011
</bibRefCitation>
: fig. 3A, B, D, E).
</paragraph>
<caption id="DF285FE8FF89F23700B54E25FE1B0EB6" ID-DOI="http://doi.org/10.5281/zenodo.10985602" ID-Zenodo-Dep="10985602" httpUri="https://zenodo.org/record/10985602/files/figure.png" pageId="6" pageNumber="566" startId="6.[152,255,1901,1925]" targetBox="[158,1429,496,1871]" targetPageId="6" targetType="figure">
<paragraph id="8BE80F60FF89F23700B54E25FE1B0EB6" blockId="6.[151,1437,1901,1998]" pageId="6" pageNumber="566">
<emphasis id="B923D372FF89F23700B54E25FEAE0EFE" bold="true" box="[152,282,1901,1926]" pageId="6" pageNumber="566">FIGURE 6.</emphasis>
<taxonomicName id="4C5774E3FF89F237010E4E26FE5F0EFE" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[291,491,1902,1926]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="566" phylum="Arthropoda" rank="species" species="datii" status="sp. nov.">
<emphasis id="B923D372FF89F237010E4E26FE5F0EFE" box="[291,491,1902,1926]" italics="true" pageId="6" pageNumber="566">Indochinamon datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF89F23701D94E26FD9B0EFE" bold="true" box="[500,559,1902,1926]" pageId="6" pageNumber="566">
<taxonomicNameLabel id="A2106E09FF89F23701D94E26FD9B0EFE" box="[500,559,1902,1926]" pageId="6" pageNumber="566" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, holotype, male (61 × 49 mm) (VNMN 2022.001). A, left third maxilliped, external view; B, left G1, ventral view; C, left G1, dorsal view; D, left G2, dorsal view; E, distal part of left G1, ventral view; F, distal part of left G1, dorsal view.
</paragraph>
</caption>
<paragraph id="8BE80F60FF88F23600EA49DFFEBF0B61" blockId="7.[151,1437,151,537]" pageId="7" pageNumber="567">
<taxonomicName id="4C5774E3FF88F23600EA49DFFE1709C9" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[199,419,151,177]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="datii" status="sp. nov.">
<emphasis id="B923D372FF88F23600EA49DFFE1709C9" box="[199,419,151,177]" italics="true" pageId="7" pageNumber="567">Indochinamon datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF88F236018749DFFE5D09C9" bold="true" box="[426,489,151,177]" pageId="7" pageNumber="567">
<taxonomicNameLabel id="A2106E09FF88F236018749DFFE5D09C9" box="[426,489,151,177]" pageId="7" pageNumber="567" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
also resembles
<taxonomicName id="4C5774E3FF88F23602B149DFFBFB09C9" authority="Naruse, Chia &amp; Zhou, 2018" authorityName="Naruse, Chia &amp; Zhou" authorityYear="2018" box="[668,1103,151,177]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="ahkense">
<emphasis id="B923D372FF88F23602B149DFFCB909C9" box="[668,781,151,177]" italics="true" pageId="7" pageNumber="567">I. ahkense</emphasis>
<bibRefCitation id="EFC67291FF88F236033849DFFBFB09C9" author="Naruse, T. &amp; Chia, J. E. &amp; Zhou, X." box="[789,1103,151,177]" pageId="7" pageNumber="567" pagination="1 - 46" refId="ref5999" refString="Naruse, T., Chia, J. E. &amp; Zhou, X. (2018) Biodiversity surveys reveal eight new species of freshwater crabs (Decapoda: Brachyura: Potamidae) from Yunnan Province, China. PeerJ, 6 (e 5497), 1 - 46. https: // doi. org / 10.7717 / peerj. 5497" type="journal article" year="2018">Naruse, Chia &amp; Zhou, 2018</bibRefCitation>
</taxonomicName>
, by having G1 with relatively slender terminal segment and pointed tip. However,
<taxonomicName id="4C5774E3FF88F23602D449F3FCF209AD" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[761,838,187,213]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="datii" status="n. sp.">
<emphasis id="B923D372FF88F23602D449F3FCF209AD" box="[761,838,187,213]" italics="true" pageId="7" pageNumber="567">I. datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF88F236037C49F3FC2709AD" bold="true" box="[849,915,187,213]" pageId="7" pageNumber="567">
<taxonomicNameLabel id="A2106E09FF88F236037C49F3FC2709AD" box="[849,915,187,213]" pageId="7" pageNumber="567" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
can be distinguished from
<taxonomicName id="4C5774E3FF88F23604F949F3FAFD09AD" authorityName="Naruse, Chia &amp; Zhou" authorityYear="2018" box="[1236,1353,187,213]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="ahkense">
<emphasis id="B923D372FF88F23604F949F3FAFD09AD" box="[1236,1353,187,213]" italics="true" pageId="7" pageNumber="567">I. ahkense</emphasis>
</taxonomicName>
by the following: 1) the regions on carapace not appearing prominently demarcated, with glabrous surface (
<figureCitation id="136C13E5FF88F23604C54997FA890981" box="[1256,1341,223,249]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="7" pageNumber="567">Fig. 1A</figureCitation>
) (versus regions less demarcated, with short, indistinct setae on metabranchial region; cf.
<bibRefCitation id="EFC67291FF88F2360436484BFB5F0865" author="Naruse, T. &amp; Chia, J. E. &amp; Zhou, X." box="[1051,1259,259,285]" pageId="7" pageNumber="567" pagination="1 - 46" refId="ref5999" refString="Naruse, T., Chia, J. E. &amp; Zhou, X. (2018) Biodiversity surveys reveal eight new species of freshwater crabs (Decapoda: Brachyura: Potamidae) from Yunnan Province, China. PeerJ, 6 (e 5497), 1 - 46. https: // doi. org / 10.7717 / peerj. 5497" type="journal article" year="2018">
Naruse
<emphasis id="B923D372FF88F236045C484BFB160865" box="[1137,1186,259,285]" italics="true" pageId="7" pageNumber="567">et al</emphasis>
. 2018
</bibRefCitation>
: fig. 2A); 2) the carapace of
<taxonomicName id="4C5774E3FF88F236010C486FFED90839" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[289,365,295,321]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="datii" status="n. sp.">
<emphasis id="B923D372FF88F236010C486FFED90839" box="[289,365,295,321]" italics="true" pageId="7" pageNumber="567">I. datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF88F236015B486FFE020839" bold="true" box="[374,438,295,321]" pageId="7" pageNumber="567">
<taxonomicNameLabel id="A2106E09FF88F236015B486FFE020839" box="[374,438,295,321]" pageId="7" pageNumber="567" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
is transversely ovate and the postorbital cristae are distinct, with uneven margin, and is slightly raised (
<figureCitation id="136C13E5FF88F236016F4803FE0C081D" box="[322,440,331,357]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="7" pageNumber="567">Fig. 1A, B</figureCitation>
) while the carapace of
<taxonomicName id="4C5774E3FF88F23602944803FC9D081D" authorityName="Naruse, Chia &amp; Zhou" authorityYear="2018" box="[697,809,331,357]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="ahkense">
<emphasis id="B923D372FF88F23602944803FC9D081D" box="[697,809,331,357]" italics="true" pageId="7" pageNumber="567">I. ahkense</emphasis>
</taxonomicName>
is subquadrate, postorbital cristae rounded, not reaching epibranchial tooth and less granulose (cf.
<bibRefCitation id="EFC67291FF88F23602584827FCFF08F1" author="Naruse, T. &amp; Chia, J. E. &amp; Zhou, X." box="[629,843,367,393]" pageId="7" pageNumber="567" pagination="1 - 46" refId="ref5999" refString="Naruse, T., Chia, J. E. &amp; Zhou, X. (2018) Biodiversity surveys reveal eight new species of freshwater crabs (Decapoda: Brachyura: Potamidae) from Yunnan Province, China. PeerJ, 6 (e 5497), 1 - 46. https: // doi. org / 10.7717 / peerj. 5497" type="journal article" year="2018">
Naruse
<emphasis id="B923D372FF88F23602E04827FD4B08F1" box="[717,767,367,393]" italics="true" pageId="7" pageNumber="567">et al</emphasis>
. 2018
</bibRefCitation>
: fig. 2A); 3) the posterior margin of the epistome is sinuous with distinct median triangle in
<taxonomicName id="4C5774E3FF88F236024F48DBFD1A08D5" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[610,686,403,429]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="datii" status="n. sp.">
<emphasis id="B923D372FF88F236024F48DBFD1A08D5" box="[610,686,403,429]" italics="true" pageId="7" pageNumber="567">I. datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF88F236029A48DBFD4308D5" bold="true" box="[695,759,403,429]" pageId="7" pageNumber="567">
<taxonomicNameLabel id="A2106E09FF88F236029A48DBFD4308D5" box="[695,759,403,429]" pageId="7" pageNumber="567" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
(
<figureCitation id="136C13E5FF88F236032A48DBFCEC08D5" box="[775,856,403,429]" captionStart="FIGURE 1" captionStartId="2.[152,255,1368,1392]" captionTargetBox="[151,1436,381,1345]" captionTargetId="figure-106@2.[151,1436,381,1345]" captionTargetPageId="2" captionText="FIGURE 1. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001); A, dorsal habitus; B, frontal view of cephalothorax; C, anterior thoracic sternum and pleon, ventral view; D, outer view of major chela; E, outer view of minor chela (dactylus tip broken)." figureDoi="http://doi.org/10.5281/zenodo.10985592" httpUri="https://zenodo.org/record/10985592/files/figure.png" pageId="7" pageNumber="567">Fig 1B</figureCitation>
) (versus nearly straight, forming an arc shape in
<taxonomicName id="4C5774E3FF88F23605A148DBFF4508A9" authorityName="Naruse, Chia &amp; Zhou" authorityYear="2018" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="ahkense">
<emphasis id="B923D372FF88F23605A148DBFF4508A9" italics="true" pageId="7" pageNumber="567">I. ahkense</emphasis>
</taxonomicName>
; cf.
<bibRefCitation id="EFC67291FF88F236010E48FFFE4008A9" author="Naruse, T. &amp; Chia, J. E. &amp; Zhou, X." box="[291,500,439,465]" pageId="7" pageNumber="567" pagination="1 - 46" refId="ref5999" refString="Naruse, T., Chia, J. E. &amp; Zhou, X. (2018) Biodiversity surveys reveal eight new species of freshwater crabs (Decapoda: Brachyura: Potamidae) from Yunnan Province, China. PeerJ, 6 (e 5497), 1 - 46. https: // doi. org / 10.7717 / peerj. 5497" type="journal article" year="2018">
Naruse
<emphasis id="B923D372FF88F236015448FFFE1E08A9" box="[377,426,439,465]" italics="true" pageId="7" pageNumber="567">et al</emphasis>
. 2018
</bibRefCitation>
: fig. 2B); 4) the G1 terminal segment of
<taxonomicName id="4C5774E3FF88F236039748FFFBB008A9" authority="Dang &amp; Hoang &amp; Do, 2024" authorityName="Dang &amp; Hoang &amp; Do" authorityYear="2024" box="[954,1028,439,465]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="datii" status="n. sp.">
<emphasis id="B923D372FF88F236039748FFFC7708A8" box="[954,963,439,464]" italics="true" pageId="7" pageNumber="567">I</emphasis>
.
<emphasis id="B923D372FF88F23603FC48FFFBB008A9" box="[977,1028,439,465]" italics="true" pageId="7" pageNumber="567">datii</emphasis>
</taxonomicName>
<emphasis id="B923D372FF88F236042648FFFBFE08A9" bold="true" box="[1035,1098,439,465]" pageId="7" pageNumber="567">
<taxonomicNameLabel id="A2106E09FF88F236042648FFFBFE08A9" box="[1035,1098,439,465]" pageId="7" pageNumber="567" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
is slender, curved and tapered to the tip (
<figureCitation id="136C13E5FF88F23601254893FECC088D" box="[264,376,475,501]" captionStart="FIGURE 2" captionStartId="3.[152,255,1297,1321]" captionTargetBox="[151,1436,237,1274]" captionTargetId="figure-56@3.[151,1436,237,1274]" captionTargetPageId="3" captionText="FIGURE 2. Indochinamon datii n. sp. holotype, male (61 × 49 mm) (VNMN 2022.001);A, left third maxilliped, external view; B, sterno-pleonal cavity with G1 and G2 in situ, ventral view; C, male pleon, external view; D, left G1, ventral view; E, left G1, dorsal view; F, distal part of left G1, ventral view; G, distal part of left G1, dorsal view; H, left G2, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.10985594" httpUri="https://zenodo.org/record/10985594/files/figure.png" pageId="7" pageNumber="567">Fig 2D, E</figureCitation>
) while that of
<taxonomicName id="4C5774E3FF88F23602364893FDCA088D" authorityName="Naruse, Chia &amp; Zhou" authorityYear="2018" box="[539,638,475,501]" class="Malacostraca" family="Potamidae" genus="Indochinamon" kingdom="Animalia" order="Decapoda" pageId="7" pageNumber="567" phylum="Arthropoda" rank="species" species="ahkese">
<emphasis id="B923D372FF88F23602364893FDCA088D" box="[539,638,475,501]" italics="true" pageId="7" pageNumber="567">I. ahkese</emphasis>
</taxonomicName>
is broad and almost straight with stouter tip (cf.
<bibRefCitation id="EFC67291FF88F23604B64893FAD8088D" author="Naruse, T. &amp; Chia, J. E. &amp; Zhou, X." box="[1179,1388,475,501]" pageId="7" pageNumber="567" pagination="1 - 46" refId="ref5999" refString="Naruse, T., Chia, J. E. &amp; Zhou, X. (2018) Biodiversity surveys reveal eight new species of freshwater crabs (Decapoda: Brachyura: Potamidae) from Yunnan Province, China. PeerJ, 6 (e 5497), 1 - 46. https: // doi. org / 10.7717 / peerj. 5497" type="journal article" year="2018">
Naruse
<emphasis id="B923D372FF88F23604DC4893FA96088D" box="[1265,1314,475,501]" italics="true" pageId="7" pageNumber="567">et al</emphasis>
. 2018
</bibRefCitation>
: fig. 4A, B, C).
</paragraph>
</subSubSection>
</treatment>
</document>