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<document id="7B194A37708FAE45AB8E07443CF0514E" ID-DOI="10.26107/RBZ-2021-0001" ID-ISSN="2345-7600" ID-Zenodo-Dep="5351566" ID-ZooBank="F861B9E5-475A-4A3D-B2AC-B49646FA7CC9" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1630206168180" checkinUser="diego" docAuthor="Grinang, Jongkar &amp; Ng, Peter K. L." docDate="2021" docId="03D25556FFA03131FCA9FDFFFA0BDCC2" docLanguage="en" docName="RBZ-2021-0001.pdf" docOrigin="Raffles Bulletin of Zoology 69" docStyle="DocumentStyle:AF09A0581917EACD12E7F0991C3E7C26.5:RafflesBZool.2019-.journal_article" docStyleId="AF09A0581917EACD12E7F0991C3E7C26" docStyleName="RafflesBZool.2019-.journal_article" docStyleVersion="5" docTitle="Arachnothelphusa Ng 1991" docType="key" docVersion="4" lastPageNumber="6" masterDocId="FFEB2D2EFFA53134FF84FF82FFA7DB20" masterDocTitle="A new species of the genus Arachnothelphusa Ng, 1991 (Crustacea: Decapoda: Gecarcinucidae) from a limestone cave in Sarawak (Malaysian Borneo)" masterLastPageNumber="7" masterPageNumber="1" pageNumber="6" updateTime="1699184943138" updateUser="plazi" zenodo-license-document="CC-BY-4.0">
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<mods:title id="5901D62125883DA9F02F846650D52C1C">A new species of the genus Arachnothelphusa Ng, 1991 (Crustacea: Decapoda: Gecarcinucidae) from a limestone cave in Sarawak (Malaysian Borneo)</mods:title>
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<mods:namePart id="34451C9C6C31217B14ACC7E7909D547B">Grinang, Jongkar</mods:namePart>
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<mods:namePart id="17FA84B87FFB988189A45505E89C42CA">Ng, Peter K. L.</mods:namePart>
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<mods:title id="59D9839AB6236B496D034ECE24C0EA5F">Raffles Bulletin of Zoology</mods:title>
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Key to species of
<taxonomicName id="4C7B9FC3FFA03131FC7EFDFFFB60D9B5" ID-CoL="7NQS2" authorityName="Ng" authorityYear="1991" box="[1018,1223,637,661]" class="Malacostraca" family="Gecarcinucidae" genus="Arachnothelphusa" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="genus">
<emphasis id="B90F3852FFA03131FC7EFDFFFB60D9B5" bold="true" box="[1018,1223,637,661]" italics="true" pageId="5" pageNumber="6">Arachnothelphusa</emphasis>
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of Borneo
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<subSubSection id="C361B7CBFFA03131FCA9FD3EFA0BDCC2" pageId="5" pageNumber="6" type="key">
<keyStep id="308FFCE5FFA03131FCA9FD3EFA0DDF67" pageId="5" pageNumber="6">
<paragraph id="8BC4E440FFA03131FCA9FD3EFA0DD85F" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
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1. Epibranchial tooth very low or indistinct; external orbital tooth very low, broad; anterolateral region less rugose, fine granules, carapace surface smooth (
<figureCitation id="1340F8C5FFA03131FBD2FD77FB6DD82B" box="[1110,1226,757,779]" captionStart="Fig" captionStartId="1.[114,149,1422,1444]" captionTargetBox="[114,1452,189,1407]" captionTargetId="figure-14@1.[114,1452,189,1407]" captionTargetPageId="1" captionText="Fig. 1. Arachnothelphusa sarang, new species. A, male (12.1 × 9.9 mm) (ZRC 2020.0351), Batu Rusa cave, Bukit Sarang, Bintulu, Sarawak, Malaysia; B, female (12.9 × 10.4 mm) (ZRC 2020.0351), Batu Kelelut, Bukit Sarang, Bintulu, Sarawak, Malaysia, specimen; CE, paratype male (18.7 × 15.3 mm) (ZRC 2020.0099), Bukit Sarang, Bintulu, Sarawak, Malaysia; F, paratype female (15.8 × 11.8 mm) (ZRC 2020.0099), Bukit Sarang, Bintulu, Sarawak, Malaysia. A, B, photographed in situ; C, F, overall dorsal habitus; D, ventral view of cephalothorax; E, frontal view of cephalothorax and chelae. Photographs: Tan Heok Hui." figureDoi="http://doi.org/10.5281/zenodo.5351568" httpUri="https://zenodo.org/record/5351568/files/figure.png" pageId="5" pageNumber="6">Figs. 1C, F</figureCitation>
,
<figureCitation id="1340F8C5FFA03131FB53FD74FAD5D82B" box="[1239,1394,758,779]" captionStart="Fig" captionStartId="2.[136,171,1121,1143]" captionTargetBox="[136,1471,189,1106]" captionTargetId="figure-203@2.[136,1471,189,1106]" captionTargetPageId="2" captionText="Fig. 2. Arachnothelphusa sarang, new species. AE, holotype male (20.4 × 14.7 mm) (ZRC 2020.0098), Bukit Sarang, Bintulu, Sarawak, Malaysia; F, G, paratype female (19.8 × 15.8 mm) (ZRC 2020.0100), Bukit Sarang, Bintulu, Sarawak, Malaysia. A, F, dorsal view of habitus; B, G, ventral view of carapace showing pleon; C, frontal view of cephalothorax; D, outer view of left chela; E, outer view of right fourth ambulatory leg. Scales: A, B, C, F, G = 10 mm; D, E = 5 mm." figureDoi="http://doi.org/10.5281/zenodo.5351570" httpUri="https://zenodo.org/record/5351570/files/figure.png" pageId="5" pageNumber="6">2A, B, C, F, G</figureCitation>
,
<figureCitation id="1340F8C5FFA03131FAFBFD74FA07D82C" box="[1407,1440,758,780]" captionStart="Fig" captionStartId="4.[136,171,967,989]" captionTargetBox="[135,1475,190,952]" captionTargetId="figure-10@4.[120,1487,184,966]" captionTargetPageId="4" captionText="Fig. 4. Carapace morphology of Arachnothelphusa species. A, A. sarang, new species, holotype male (20.4 × 14.7 mm) (ZRC 2020.0098), limestone cave, Bukit Sarang, Bintulu, Sarawak; B, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; C, A. terrapes Ng, 1991, male (30.8 × 20.5 mm) (ZRC 2017.1205), Danum Valley, Lahad Datu, Sabah; D, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; E, A. melanippe (De Man, 1899), paratype female (21.4 × 16.7 mm) (RMNH D1303b), Mt. Liang Koebeng, Kalimantan, Indonesia. E after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351574" httpUri="https://zenodo.org/record/5351574/files/figure.png" pageId="5" pageNumber="6">4A</figureCitation>
); G1 gently curving outwards, terminal segment about one-third length of subterminal segment; distal segment of G2 less than a quarter length of basal segment (
<figureCitation id="1340F8C5FFA03131FB2DFCCEFAB6D842" box="[1193,1297,844,866]" captionStart="Fig" captionStartId="3.[113,148,941,963]" captionTargetBox="[114,1453,189,924]" captionTargetId="figure-15@3.[99,1465,175,946]" captionTargetPageId="3" captionText="Fig. 3. Arachnothelphusa sarang, new species, holotype male (20.4 × 14.7 mm) (ZRC 2020.0098), limestone cave, Bukit Sarang, Bintulu, Sarawak, Malaysia. A, dorsal view of left G1; B, dorsal view of distal part of left G1; C, ventral view of left G1; D, ventral view of distal part of left G1; E, dorsal view of left G2. Scales = 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.5351572" httpUri="https://zenodo.org/record/5351572/files/figure.png" pageId="5" pageNumber="6">Fig. 3AE</figureCitation>
)........................ ...........................
<taxonomicName id="4C7B9FC3FFA03131FB81FCEBFBC3D85E" ID-CoL="84GPT" authority="Grinang &amp; Ng, 2021" authorityName="Grinang &amp; Ng" authorityYear="2021" box="[1029,1124,873,894]" class="Malacostraca" family="Gecarcinucidae" genus="Arachnothelphusa" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="sarang" status="sp. nov.">
<emphasis id="B90F3852FFA03131FB81FCEBFBC3D85E" box="[1029,1124,873,894]" italics="true" pageId="5" pageNumber="6">A. sarang</emphasis>
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,
<taxonomicNameLabel id="A23C8529FFA03131FBF5FCEBFB41D85F" box="[1137,1254,873,895]" pageId="5" pageNumber="6" rank="species">new species</taxonomicNameLabel>
(northern
<collectingCountry id="F36CA4D0FFA03131FACBFCEBFA04D85F" box="[1359,1443,873,895]" name="Malaysia" pageId="5" pageNumber="6">Sarawak</collectingCountry>
)
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<paragraph id="8BC4E440FFA03131FCA9FC04FA0DDF67" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
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Epibranchial tooth distinct, triangular; external orbital tooth triangular; anterolateral region prominently rugose, coarse granules, carapace surface rugose (
<figureCitation id="1340F8C5FFA03131FB2AFC3DFABFD8F5" box="[1198,1304,959,981]" captionStart="Fig" captionStartId="4.[136,171,967,989]" captionTargetBox="[135,1475,190,952]" captionTargetId="figure-10@4.[120,1487,184,966]" captionTargetPageId="4" captionText="Fig. 4. Carapace morphology of Arachnothelphusa species. A, A. sarang, new species, holotype male (20.4 × 14.7 mm) (ZRC 2020.0098), limestone cave, Bukit Sarang, Bintulu, Sarawak; B, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; C, A. terrapes Ng, 1991, male (30.8 × 20.5 mm) (ZRC 2017.1205), Danum Valley, Lahad Datu, Sabah; D, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; E, A. melanippe (De Man, 1899), paratype female (21.4 × 16.7 mm) (RMNH D1303b), Mt. Liang Koebeng, Kalimantan, Indonesia. E after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351574" httpUri="https://zenodo.org/record/5351574/files/figure.png" pageId="5" pageNumber="6">Fig. 4BE</figureCitation>
); G1 gently or strongly curving outwards, terminal segment either half, onethird or a quarter length of subterminal segment; distal segment of G2 either a quarter or one-fifth length of basal segment (
<figureCitation id="1340F8C5FFA03131FA00FB97FCF8DF68" captionStart="Fig" captionStartId="4.[136,171,1949,1971]" captionTargetBox="[164,1449,1158,1931]" captionTargetId="figure-8@4.[134,1477,1137,1934]" captionTargetPageId="4" captionText="Fig. 5. Gonopod morphology of Arachnothelphusa species. AE, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype, male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; FJ, A. terrapes Ng, 1991, holotype, male (17.6 × 13.3 mm) (ZRC 1992.7918), Danum Valley, Lahad Datu, Sabah; KN, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; OS, A. melanippe (De Man, 1899), lectotype, male (18.9 × 14.4 mm) (RMNH D1303a), Mt. Liang Koebeng, Kalimantan, Borneo. C, F, K, O, ventral view of left G1; D, G, L, P, ventral view of distal part of left G1; A, H, Q, dorsal view of left G1; B, I, M, R, ventral view of distal part of left G1; E, J, N, S, left G2. AE, KN after Grinang et al. (2015); FJ, OS after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351576" httpUri="https://zenodo.org/record/5351576/files/figure.png" pageId="5" pageNumber="6">Fig. 5</figureCitation>
)..............................................................................................2
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<keyStep id="308FFCE5FFA03131FCA9FBCDFA0DDF9B" pageId="5" pageNumber="6">
<paragraph id="8BC4E440FFA03131FCA9FBCDFA0DDFA1" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
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2. Epibranchial tooth distinct, acutely triangular; G1 strongly curving outwards (
<figureCitation id="1340F8C5FFA03131FB8FFBEEFB16DFA2" box="[1035,1201,1132,1154]" captionStart="Fig" captionStartId="4.[136,171,1949,1971]" captionTargetBox="[164,1449,1158,1931]" captionTargetId="figure-8@4.[134,1477,1137,1934]" captionTargetPageId="4" captionText="Fig. 5. Gonopod morphology of Arachnothelphusa species. AE, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype, male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; FJ, A. terrapes Ng, 1991, holotype, male (17.6 × 13.3 mm) (ZRC 1992.7918), Danum Valley, Lahad Datu, Sabah; KN, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; OS, A. melanippe (De Man, 1899), lectotype, male (18.9 × 14.4 mm) (RMNH D1303a), Mt. Liang Koebeng, Kalimantan, Borneo. C, F, K, O, ventral view of left G1; D, G, L, P, ventral view of distal part of left G1; A, H, Q, dorsal view of left G1; B, I, M, R, ventral view of distal part of left G1; E, J, N, S, left G2. AE, KN after Grinang et al. (2015); FJ, OS after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351576" httpUri="https://zenodo.org/record/5351576/files/figure.png" pageId="5" pageNumber="6">Fig. 5F, H, O, Q</figureCitation>
)......................................3
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</paragraph>
<paragraph id="8BC4E440FFA03131FCA9FB0BFA0DDF9B" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
<keyLead id="308A4775FFA03131FCA9FB0BFA0DDF9B" pageId="5" pageNumber="6">
Epibranchial tooth distinct, relatively blunt; G1 gently curving outwards (
<figureCitation id="1340F8C5FFA03131FC3EFB27FBE4DF9B" box="[954,1091,1189,1211]" captionStart="Fig" captionStartId="4.[136,171,1949,1971]" captionTargetBox="[164,1449,1158,1931]" captionTargetId="figure-8@4.[134,1477,1137,1934]" captionTargetPageId="4" captionText="Fig. 5. Gonopod morphology of Arachnothelphusa species. AE, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype, male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; FJ, A. terrapes Ng, 1991, holotype, male (17.6 × 13.3 mm) (ZRC 1992.7918), Danum Valley, Lahad Datu, Sabah; KN, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; OS, A. melanippe (De Man, 1899), lectotype, male (18.9 × 14.4 mm) (RMNH D1303a), Mt. Liang Koebeng, Kalimantan, Borneo. C, F, K, O, ventral view of left G1; D, G, L, P, ventral view of distal part of left G1; A, H, Q, dorsal view of left G1; B, I, M, R, ventral view of distal part of left G1; E, J, N, S, left G2. AE, KN after Grinang et al. (2015); FJ, OS after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351576" httpUri="https://zenodo.org/record/5351576/files/figure.png" pageId="5" pageNumber="6">Fig. 5A, C, K</figureCitation>
)........................................................4
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<keyStep id="308FFCE5FFA03131FCA9FB40FA0DDD35" pageId="5" pageNumber="6">
<paragraph id="8BC4E440FFA03131FCA9FB40FA0DDE48" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
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3. Epibranchial tooth acutely triangular, distinctly separated from external orbital tooth by wide, deep cleft; external orbital acutely triangular (
<figureCitation id="1340F8C5FFA03131FB97FB7EFBC3DE32" box="[1043,1124,1276,1298]" captionStart="Fig" captionStartId="4.[136,171,967,989]" captionTargetBox="[135,1475,190,952]" captionTargetId="figure-10@4.[120,1487,184,966]" captionTargetPageId="4" captionText="Fig. 4. Carapace morphology of Arachnothelphusa species. A, A. sarang, new species, holotype male (20.4 × 14.7 mm) (ZRC 2020.0098), limestone cave, Bukit Sarang, Bintulu, Sarawak; B, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; C, A. terrapes Ng, 1991, male (30.8 × 20.5 mm) (ZRC 2017.1205), Danum Valley, Lahad Datu, Sabah; D, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; E, A. melanippe (De Man, 1899), paratype female (21.4 × 16.7 mm) (RMNH D1303b), Mt. Liang Koebeng, Kalimantan, Indonesia. E after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351574" httpUri="https://zenodo.org/record/5351574/files/figure.png" pageId="5" pageNumber="6">Fig. 4B</figureCitation>
); terminal segment of G1 about half of length of subterminal segment; distal segment of G2 about quarter length of basal segment (
<figureCitation id="1340F8C5FFA03131FB57FAB7FA9CDE6B" box="[1235,1339,1333,1355]" captionStart="Fig" captionStartId="4.[136,171,1949,1971]" captionTargetBox="[164,1449,1158,1931]" captionTargetId="figure-8@4.[134,1477,1137,1934]" captionTargetPageId="4" captionText="Fig. 5. Gonopod morphology of Arachnothelphusa species. AE, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype, male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; FJ, A. terrapes Ng, 1991, holotype, male (17.6 × 13.3 mm) (ZRC 1992.7918), Danum Valley, Lahad Datu, Sabah; KN, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; OS, A. melanippe (De Man, 1899), lectotype, male (18.9 × 14.4 mm) (RMNH D1303a), Mt. Liang Koebeng, Kalimantan, Borneo. C, F, K, O, ventral view of left G1; D, G, L, P, ventral view of distal part of left G1; A, H, Q, dorsal view of left G1; B, I, M, R, ventral view of distal part of left G1; E, J, N, S, left G2. AE, KN after Grinang et al. (2015); FJ, OS after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351576" httpUri="https://zenodo.org/record/5351576/files/figure.png" pageId="5" pageNumber="6">Fig. 5AE</figureCitation>
)................. ......................................
<taxonomicName id="4C7B9FC3FFA03131FBC3FAD1FB40DE48" ID-CoL="G3VX" authorityName="Grinang, Pui &amp; Ng" authorityYear="2015" box="[1095,1255,1363,1384]" class="Malacostraca" family="Gecarcinucidae" genus="Arachnothelphusa" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="merarapensis">
<emphasis id="B90F3852FFA03131FBC3FAD1FB40DE48" box="[1095,1255,1363,1384]" italics="true" pageId="5" pageNumber="6">A. merarapensis</emphasis>
</taxonomicName>
(northern
<collectingCountry id="F36CA4D0FFA03131FACBFAD0FA04DE48" box="[1359,1443,1362,1384]" name="Malaysia" pageId="5" pageNumber="6">Sarawak</collectingCountry>
)
</keyLead>
</paragraph>
<paragraph id="8BC4E440FFA03131FCA9FAF2FA0DDD35" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
<keyLead id="308A4775FFA03131FCA9FAF2FA0DDD35" pageId="5" pageNumber="6">
Epibranchial tooth distinct but relatively small, separated from external orbital tooth by small cleft; external orbital tooth broadly triangular (
<figureCitation id="1340F8C5FFA03131FB93FA2BFBC1DE9F" box="[1047,1126,1449,1471]" captionStart="Fig" captionStartId="4.[136,171,967,989]" captionTargetBox="[135,1475,190,952]" captionTargetId="figure-10@4.[120,1487,184,966]" captionTargetPageId="4" captionText="Fig. 4. Carapace morphology of Arachnothelphusa species. A, A. sarang, new species, holotype male (20.4 × 14.7 mm) (ZRC 2020.0098), limestone cave, Bukit Sarang, Bintulu, Sarawak; B, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; C, A. terrapes Ng, 1991, male (30.8 × 20.5 mm) (ZRC 2017.1205), Danum Valley, Lahad Datu, Sabah; D, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; E, A. melanippe (De Man, 1899), paratype female (21.4 × 16.7 mm) (RMNH D1303b), Mt. Liang Koebeng, Kalimantan, Indonesia. E after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351574" httpUri="https://zenodo.org/record/5351574/files/figure.png" pageId="5" pageNumber="6">Fig. 4E</figureCitation>
); terminal segment of G1 about one-third of length of subterminal segment; distal segment less than a quarter length of basal segment (
<figureCitation id="1340F8C5FFA03131FA81FA60FACCDED8" box="[1285,1387,1506,1528]" captionStart="Fig" captionStartId="4.[136,171,1949,1971]" captionTargetBox="[164,1449,1158,1931]" captionTargetId="figure-8@4.[134,1477,1137,1934]" captionTargetPageId="4" captionText="Fig. 5. Gonopod morphology of Arachnothelphusa species. AE, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype, male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; FJ, A. terrapes Ng, 1991, holotype, male (17.6 × 13.3 mm) (ZRC 1992.7918), Danum Valley, Lahad Datu, Sabah; KN, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; OS, A. melanippe (De Man, 1899), lectotype, male (18.9 × 14.4 mm) (RMNH D1303a), Mt. Liang Koebeng, Kalimantan, Borneo. C, F, K, O, ventral view of left G1; D, G, L, P, ventral view of distal part of left G1; A, H, Q, dorsal view of left G1; B, I, M, R, ventral view of distal part of left G1; E, J, N, S, left G2. AE, KN after Grinang et al. (2015); FJ, OS after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351576" httpUri="https://zenodo.org/record/5351576/files/figure.png" pageId="5" pageNumber="6">Fig. 5OS</figureCitation>
)......... .........................................
<taxonomicName id="4C7B9FC3FFA03131FBDDFA7DFB7EDD34" ID-CoL="G3VW" baseAuthorityName="De Man" baseAuthorityYear="1899" box="[1113,1241,1535,1556]" class="Malacostraca" family="Gecarcinucidae" genus="Arachnothelphusa" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="melanippe">
<emphasis id="B90F3852FFA03131FBDDFA7DFB7EDD34" box="[1113,1241,1535,1556]" italics="true" pageId="5" pageNumber="6">A. melanippe</emphasis>
</taxonomicName>
(
<collectingRegion id="49BF2AA2FFA03131FB63FA7DFA03DD35" box="[1255,1444,1535,1557]" country="Indonesia" name="Kalimantan Tengah" pageId="5" pageNumber="6">central Kalimantan</collectingRegion>
)
</keyLead>
</paragraph>
</keyStep>
<keyStep id="308FFCE5FFA03131FCA9F99EFA0DDDFF" pageId="5" pageNumber="6">
<paragraph id="8BC4E440FFA03131FCA9F99EFA0CDDA8" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
<keyLead id="308A4775FFA03131FCA9F99EFA0CDDA8" pageId="5" pageNumber="6">
4. Epibranchial tooth distinct; external orbital tooth broadly triangular (
<figureCitation id="1340F8C5FFA03131FC40F9BBFBB0DD6F" box="[964,1047,1593,1615]" captionStart="Fig" captionStartId="4.[136,171,967,989]" captionTargetBox="[135,1475,190,952]" captionTargetId="figure-10@4.[120,1487,184,966]" captionTargetPageId="4" captionText="Fig. 4. Carapace morphology of Arachnothelphusa species. A, A. sarang, new species, holotype male (20.4 × 14.7 mm) (ZRC 2020.0098), limestone cave, Bukit Sarang, Bintulu, Sarawak; B, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; C, A. terrapes Ng, 1991, male (30.8 × 20.5 mm) (ZRC 2017.1205), Danum Valley, Lahad Datu, Sabah; D, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; E, A. melanippe (De Man, 1899), paratype female (21.4 × 16.7 mm) (RMNH D1303b), Mt. Liang Koebeng, Kalimantan, Indonesia. E after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351574" httpUri="https://zenodo.org/record/5351574/files/figure.png" pageId="5" pageNumber="6">Fig. 4D</figureCitation>
); terminal segment of G1 about a third length of subterminal segment (
<figureCitation id="1340F8C5FFA03131FB0EF9D7FB5EDD4B" box="[1162,1273,1621,1643]" captionStart="Fig" captionStartId="4.[136,171,1949,1971]" captionTargetBox="[164,1449,1158,1931]" captionTargetId="figure-8@4.[134,1477,1137,1934]" captionTargetPageId="4" captionText="Fig. 5. Gonopod morphology of Arachnothelphusa species. AE, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype, male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; FJ, A. terrapes Ng, 1991, holotype, male (17.6 × 13.3 mm) (ZRC 1992.7918), Danum Valley, Lahad Datu, Sabah; KN, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; OS, A. melanippe (De Man, 1899), lectotype, male (18.9 × 14.4 mm) (RMNH D1303a), Mt. Liang Koebeng, Kalimantan, Borneo. C, F, K, O, ventral view of left G1; D, G, L, P, ventral view of distal part of left G1; A, H, Q, dorsal view of left G1; B, I, M, R, ventral view of distal part of left G1; E, J, N, S, left G2. AE, KN after Grinang et al. (2015); FJ, OS after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351576" httpUri="https://zenodo.org/record/5351576/files/figure.png" pageId="5" pageNumber="6">Fig. 5KM</figureCitation>
)............................ ............................................
<taxonomicName id="4C7B9FC3FFA03131FBEFF9F1FB58DDA7" ID-CoL="G3VV" baseAuthorityName="Borradaile" baseAuthorityYear="1900" box="[1131,1279,1650,1672]" class="Malacostraca" family="Gecarcinucidae" genus="Arachnothelphusa" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="kadamaiana">
<emphasis id="B90F3852FFA03131FBEFF9F1FB58DDA7" box="[1131,1279,1650,1672]" italics="true" pageId="5" pageNumber="6">A. kadamaiana</emphasis>
</taxonomicName>
(northern
<collectingRegion id="49BF2AA2FFA03131FAE3F9F0FA04DDA8" box="[1383,1443,1650,1672]" country="Malaysia" name="Sabah" pageId="5" pageNumber="6">Sabah</collectingRegion>
)
</keyLead>
</paragraph>
<paragraph id="8BC4E440FFA03131FCA9F912FA0DDDFF" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
<keyLead id="308A4775FFA03131FCA9F912FA0DDDFF" pageId="5" pageNumber="6"> Epibranchial tooth distinct; external orbital tooth triangular; terminal segment of G1 about a quarter length of subterminal segment....................................................................................5</keyLead>
</paragraph>
</keyStep>
<keyStep id="308FFCE5FFA03131FCA9F967FA0BDCC2" pageId="5" pageNumber="6">
<paragraph id="8BC4E440FFA03131FCA9F967FA0BDCAB" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
<keyLead id="308A4775FFA03131FCA9F967FA0BDCAB" pageId="5" pageNumber="6">
5. Epibranchial tooth distinct on both sides, separated from external orbital tooth by deep, broad U-shaped cleft; external orbital tooth triangular (
<figureCitation id="1340F8C5FFA03131FBB2F89DFB26DC15" box="[1078,1153,1823,1845]" captionStart="Fig" captionStartId="4.[136,171,967,989]" captionTargetBox="[135,1475,190,952]" captionTargetId="figure-10@4.[120,1487,184,966]" captionTargetPageId="4" captionText="Fig. 4. Carapace morphology of Arachnothelphusa species. A, A. sarang, new species, holotype male (20.4 × 14.7 mm) (ZRC 2020.0098), limestone cave, Bukit Sarang, Bintulu, Sarawak; B, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; C, A. terrapes Ng, 1991, male (30.8 × 20.5 mm) (ZRC 2017.1205), Danum Valley, Lahad Datu, Sabah; D, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; E, A. melanippe (De Man, 1899), paratype female (21.4 × 16.7 mm) (RMNH D1303b), Mt. Liang Koebeng, Kalimantan, Indonesia. E after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351574" httpUri="https://zenodo.org/record/5351574/files/figure.png" pageId="5" pageNumber="6">Fig. 4C</figureCitation>
); G1 with cone-shaped terminal segment, about a quarter length of subterminal; distal segment of G2 less than fifth length of basal segment (
<figureCitation id="1340F8C5FFA03131FA9CF8DBFAD0DC4F" box="[1304,1399,1881,1903]" captionStart="Fig" captionStartId="4.[136,171,1949,1971]" captionTargetBox="[164,1449,1158,1931]" captionTargetId="figure-8@4.[134,1477,1137,1934]" captionTargetPageId="4" captionText="Fig. 5. Gonopod morphology of Arachnothelphusa species. AE, A. merarapensis Grinang, Pui &amp; Ng, 2015, holotype, male (22.5 × 16.8 mm) (ZRC 2016.0297), Merarap Hot Spring, Lawas, Sarawak; FJ, A. terrapes Ng, 1991, holotype, male (17.6 × 13.3 mm) (ZRC 1992.7918), Danum Valley, Lahad Datu, Sabah; KN, A. kadamaiana (Borradaile, 1900), male (20.1 × 14.9 mm) (SMF 4282), Kadamian River, Sabah; OS, A. melanippe (De Man, 1899), lectotype, male (18.9 × 14.4 mm) (RMNH D1303a), Mt. Liang Koebeng, Kalimantan, Borneo. C, F, K, O, ventral view of left G1; D, G, L, P, ventral view of distal part of left G1; A, H, Q, dorsal view of left G1; B, I, M, R, ventral view of distal part of left G1; E, J, N, S, left G2. AE, KN after Grinang et al. (2015); FJ, OS after Ng (1991)." figureDoi="http://doi.org/10.5281/zenodo.5351576" httpUri="https://zenodo.org/record/5351576/files/figure.png" pageId="5" pageNumber="6">Fig. 5FJ</figureCitation>
)....... .....................................................
<taxonomicName id="4C7B9FC3FFA03131FB1BF8F4FAABDCAB" ID-CoL="8W6D7" authorityName="Ng" authorityYear="1991" box="[1183,1292,1910,1931]" class="Malacostraca" family="Gecarcinucidae" genus="Arachnothelphusa" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="terrapes">
<emphasis id="B90F3852FFA03131FB1BF8F4FAABDCAB" box="[1183,1292,1910,1931]" italics="true" pageId="5" pageNumber="6">A. terrapes</emphasis>
</taxonomicName>
(eastern
<collectingRegion id="49BF2AA2FFA03131FAEDF8F7FA02DCAB" box="[1385,1445,1909,1931]" country="Malaysia" name="Sabah" pageId="5" pageNumber="6">Sabah</collectingRegion>
)
</keyLead>
</paragraph>
<paragraph id="8BC4E440FFA03131FCA9F811FA0BDCC2" blockId="5.[813,1454,700,2018]" pageId="5" pageNumber="6">
<keyLead id="308A4775FFA03131FCA9F811FA0BDCC2" pageId="5" pageNumber="6">
Epibranchial tooth distinct on both sides, small, blunt, not separated from external orbital tooth by cleft.......................... ..........................................
<taxonomicName id="4C7B9FC3FFA03131FBDBF84EFAABDCC1" ID-CoL="G3VY" authorityName="Ng &amp; Goh" authorityYear="1987" box="[1119,1292,1996,2017]" class="Malacostraca" family="Gecarcinucidae" genus="Arachnothelphusa" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="rhadamanthysi">
<emphasis id="B90F3852FFA03131FBDBF84EFAABDCC1" box="[1119,1292,1996,2017]" italics="true" pageId="5" pageNumber="6">A. rhadamanthysi</emphasis>
</taxonomicName>
(eastern
<collectingRegion id="49BF2AA2FFA03131FAEDF84EFA02DCC2" box="[1385,1445,1996,2018]" country="Malaysia" name="Sabah" pageId="5" pageNumber="6">Sabah</collectingRegion>
)
</keyLead>
</paragraph>
</keyStep>
</subSubSection>
</treatment>
</document>