377 lines
28 KiB
XML
377 lines
28 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.810.30726" ID-GBIF-Dataset="628ca4b8-615d-4a6a-b038-f100b99eae53" ID-PMC="PMC6308228" ID-Pensoft-Pub="1313-2970-810-91" ID-PubMed="30613174" ID-ZBK="2A23FBC50BFD46658FDB12CF86E8FCC3" ModsDocAuthor="" ModsDocDate="2018" ModsDocID="1313-2970-810-91" ModsDocOrigin="ZooKeys 810" ModsDocTitle="The freshwater crabs of Macau, with the description of a new species of Nanhaipotamon Bott, 1968 and the redescription of Nanhaipotamonwupingense Cheng, Yang, Zhong & Li, 2003 (Crustacea, Decapoda, Potamidae)" checkinTime="1545315428786" checkinUser="pensoft" docAuthor="Huang, Chao, Wong, Kai Chin & Ahyong, Shane T." docDate="2018" docId="C7784BE3270645FDFA6A6C2065E9B994" docLanguage="en" docName="ZooKeys 810: 91-111" docOrigin="ZooKeys 810" docSource="http://dx.doi.org/10.3897/zookeys.810.30726" docTitle="Nanhaipotamon macau Huang, Wong & Ahyong, 2018, sp. n." docType="treatment" docUuid="550E7796-5748-4522-9825-C2A6EDB3BD8B" docUuidSource="ZooBank" docVersion="5" lastPageNumber="97" masterDocId="095DFFE7FFB0FFA0FFE77A277212163E" masterDocTitle="The freshwater crabs of Macau, with the description of a new species of Nanhaipotamon Bott, 1968 and the redescription of Nanhaipotamonwupingense Cheng, Yang, Zhong & Li, 2003 (Crustacea, Decapoda, Potamidae)" masterLastPageNumber="111" masterPageNumber="91" pageNumber="93" updateTime="1668166648905" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>The freshwater crabs of Macau, with the description of a new species of Nanhaipotamon Bott, 1968 and the redescription of Nanhaipotamonwupingense Cheng, Yang, Zhong & Li, 2003 (Crustacea, Decapoda, Potamidae)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Huang, Chao</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Wong, Kai Chin</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Ahyong, Shane T.</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2018</mods:date>
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<mods:detail type="volume">
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<mods:number>810</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>91</mods:start>
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<mods:end>111</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.810.30726</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.810.30726</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-810-91</mods:identifier>
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<mods:identifier type="ZBK">2A23FBC50BFD46658FDB12CF86E8FCC3</mods:identifier>
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<mods:identifier type="ZooBank">2A23FBC50BFD46658FDB12CF86E8FCC3</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="154125121" LSID="urn:lsid:zoobank.org:act:550E7796-5748-4522-9825-C2A6EDB3BD8B" httpUri="http://treatment.plazi.org/id/C7784BE3270645FDFA6A6C2065E9B994" lastPageId="6" lastPageNumber="97" pageId="2" pageNumber="93">
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<subSubSection pageId="2" pageNumber="93" type="nomenclature">
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<paragraph pageId="2" pageNumber="93">
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<taxonomicName LSID="http://zoobank.org/550E7796-5748-4522-9825-C2A6EDB3BD8B" class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon macau" order="Decapoda" pageId="2" pageNumber="93" phylum="Arthropoda" rank="species" species="macau">Nanhaipotamon macau</taxonomicName>
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<taxonomicNameLabel pageId="2" pageNumber="93">sp. n.</taxonomicNameLabel>
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Figs 2A, 3, 4, 5, 6
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="94" type="type material">
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<paragraph pageId="3" pageNumber="94">
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<pageBreakToken pageId="3" pageNumber="94" start="start">Type</pageBreakToken>
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material.
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</paragraph>
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<paragraph pageId="3" pageNumber="94">
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Holotype: SYSBM 001649, male (37.4
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<normalizedToken originalValue="×">x</normalizedToken>
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30.9 mm), Coloane (
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<geoCoordinate direction="north" orientation="latitude" precision="555" value="22.12">22.12N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="555" value="113.56">113.56E</geoCoordinate>
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), Macau, China, forest floor, coll. K.C. Wong, July 2010. Paratypes: SYSBM 001650, female (31.3
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<normalizedToken originalValue="×">x</normalizedToken>
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25.5 mm), Coloane, Macau, China, mud burrow adjacent to small hill stream, coll. C. Huang, February 2018. SYSBM 001651, male (36.6
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<normalizedToken originalValue="×">x</normalizedToken>
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29.3 mm), same data as above. IACM, 2 males (36.5
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<normalizedToken originalValue="×">x</normalizedToken>
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31.1 mm, 34.6
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<normalizedToken originalValue="×">x</normalizedToken>
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28.5 mm), Coloane, Macau, forest floor, coll. J. Z. Huang, July 2009. AM P101301, male (27.7
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<normalizedToken originalValue="×">x</normalizedToken>
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22.9 mm), same data as above. ZRC, male (22.3
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<normalizedToken originalValue="×">x</normalizedToken>
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19.0 mm) Coloane, Macau, China, under rock in small hillstream, coll. C. Huang, January 2018.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="94" type="materials_examined">
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<paragraph pageId="3" pageNumber="94">Other material examined.</paragraph>
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<paragraph pageId="3" pageNumber="94">
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Macau: SYSBM 001652-55, 4 males (35.3
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<normalizedToken originalValue="×">x</normalizedToken>
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28.8 mm, 32.1
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<normalizedToken originalValue="×">x</normalizedToken>
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26.5 mm, 29.0
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<normalizedToken originalValue="×">x</normalizedToken>
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24.2 mm, 28.9
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<normalizedToken originalValue="×">x</normalizedToken>
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24.1 mm), Coloane, in burrows adjacent to small hill stream, coll. C. Huang, February 2018.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="3" pageNumber="94" type="diagnosis">
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<paragraph pageId="3" pageNumber="94">Diagnosis.</paragraph>
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<paragraph pageId="3" pageNumber="94">
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Carapace broader than long, regions indistinct, dorsal surface convex, anterolateral region weakly rugose (Figs 3A, 4B); postorbital cristae sharp, laterally expanded, almost fused with epibranchial teeth and epigastric cristae (Figs 3A, 4B); external orbital angle sharply triangular, outer margin gently convex to almost straight, separated from anterolateral margin by conspicuous gap (Figs 3A, B, 4B); sub-orbital regions covered by sparse low granules, pterygostomial regions covered with short rows of a few rounded granules; sub-hepatic regions covered with lined striae (Fig. 3B); maxilliped III exopod reaching to proximal one-third of merus with short flagellum (Fig. 5A); female vulva ovate, medium-sized, positioned closely to one another (Fig. 4D); male pleon triangular, lateral margins almost straight (Fig. 3C); G1 slender, subterminal segment tapering distally, terminal segment large, distally expanded, distal margin laminar, apex blunt, directed outward (Figs 5
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<normalizedToken originalValue="C–E">C-E</normalizedToken>
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, 6
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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). G2 basal segment subovate (Fig. 5B).
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</paragraph>
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<caption pageId="3" pageNumber="94">
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<paragraph pageId="3" pageNumber="94">
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Figure 3.
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<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon macau" order="Decapoda" pageId="3" pageNumber="94" phylum="Arthropoda" rank="species" species="macau">Nanhaipotamon macau</taxonomicName>
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sp. n., male holotype (37.4
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<normalizedToken originalValue="×">x</normalizedToken>
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30.9 mm), SYSBM 001649 Dorsal habitus (A); cephalothorax, anterior view (B); anterior thoracic sternum and pleon, ventral view (C); sterno-pleonal cavity with right G1in situ (left G1 removed), ventral view (D).
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</paragraph>
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</caption>
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<caption pageId="3" pageNumber="94">
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<paragraph pageId="3" pageNumber="94">
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Figure 4.
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<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon macau" order="Decapoda" pageId="3" pageNumber="94" phylum="Arthropoda" rank="species" species="macau">Nanhaipotamon macau</taxonomicName>
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sp. n., male holotype (37.4
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<normalizedToken originalValue="×">x</normalizedToken>
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30.9 mm), SYSBM 001649 (A); female paratype (31.3
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<normalizedToken originalValue="×">x</normalizedToken>
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25.5 mm), SYSBM 001650 (
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<normalizedToken originalValue="B–D">B-D</normalizedToken>
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). Anterior thoracic sternum (A); dorsal habitus (B); pleon, ventral view (C); vulvae, ventral view (D).
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</paragraph>
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</caption>
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<caption pageId="3" pageNumber="94">
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<paragraph pageId="3" pageNumber="94">
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Figure 5.
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<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon macau" order="Decapoda" pageId="3" pageNumber="94" phylum="Arthropoda" rank="species" species="macau">Nanhaipotamon macau</taxonomicName>
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sp. n., male holotype (37.4
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<normalizedToken originalValue="×">x</normalizedToken>
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30.9 mm), SYSBM 001649 (
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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, F, G); male paratype (36.6
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<normalizedToken originalValue="×">x</normalizedToken>
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29.3 mm), SYSBM 001651 (D); male (35.3
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<normalizedToken originalValue="×">x</normalizedToken>
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28.8 mm), SYSBM 001652 (E); female paratype (31.3
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<normalizedToken originalValue="×">x</normalizedToken>
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25.5 mm), SYSBM 001650 (
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<normalizedToken originalValue="H–I">H-I</normalizedToken>
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). Left maxilliped 3 (A); left G2, ventral view (B); left G1, ventral view (
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<normalizedToken originalValue="C–E">C-E</normalizedToken>
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); minor cheliped (F, H); major cheliped (G, I). Scale bars: 1.0 mm (
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<normalizedToken originalValue="A–E">A-E</normalizedToken>
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); 5.0 mm (
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<normalizedToken originalValue="F–I">F-I</normalizedToken>
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).
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</paragraph>
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</caption>
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<caption pageId="3" pageNumber="94">
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<paragraph pageId="3" pageNumber="94">
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Figure 6.
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<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon macau" order="Decapoda" pageId="3" pageNumber="94" phylum="Arthropoda" rank="species" species="macau">Nanhaipotamon macau</taxonomicName>
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sp. n., male holotype (37.4
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<normalizedToken originalValue="×">x</normalizedToken>
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30.9 mm), SYSBM 001649 (
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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);
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<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon wupingense" order="Decapoda" pageId="3" pageNumber="94" phylum="Arthropoda" rank="species" species="wupingense">Nanhaipotamon wupingense</taxonomicName>
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Cheng, Yang, Zhong & Li, 2003, male neotype (22.4
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<normalizedToken originalValue="×">x</normalizedToken>
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18.3 mm), JX 050563 (
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<normalizedToken originalValue="D–F">D-F</normalizedToken>
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);
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<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon guangdongense" order="Decapoda" pageId="3" pageNumber="94" phylum="Arthropoda" rank="species" species="guangdongense">Nanhaipotamon guangdongense</taxonomicName>
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Dai, 1997, male, (30.9
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<normalizedToken originalValue="×">x</normalizedToken>
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24.8 mm), SYSBM 001646 (G). Left G1, ventral view (A, D, E); left G1, dorsal view (B); Left G1 terminal segment, ventral view (C); Left G2, ventral view (F, G). Scale bar: 1.0 mm.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection lastPageId="6" lastPageNumber="97" pageId="3" pageNumber="94" type="description">
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<paragraph pageId="3" pageNumber="94">Description.</paragraph>
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<paragraph lastPageId="4" lastPageNumber="95" pageId="3" pageNumber="94">
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Carapace broader than long, width about 1.2
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<normalizedToken originalValue="×">x</normalizedToken>
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length (n = 6); regions indistinct, dorsal surface convex; surface generally smooth, pitted, anterolateral region weakly rugose (Figs 3A, 4B). Front deflexed, margin ridged in dorsal view (Figs 3A, 4B). Epigastric cristae low, separated by narrow gap (Figs 3A, 4B). Postorbital cristae sharp, laterally expanded, almost fused with epibranchial teeth and epigastric cristae (Figs 3A, 4B). Branchial regions slightly swollen (Figs 3A, B, 4B). Cervical groove shallow (Figs 3A, 4B). Mesogastric region slightly convex (Figs 3A, 4B). External orbital
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<pageBreakToken pageId="4" pageNumber="95" start="start">angle</pageBreakToken>
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sharply triangular, outer margin gently convex to almost straight, separated from anterolateral margin by conspicuous gap (Figs 3A, B, 4B). Epibranchial tooth small, granular, indistinct (Figs 3A, B, 4B). Anterolateral margin cristate, lined with 20-23 granules, less distinct in some larger specimens; bent inward posteriorly (Figs 3A, 4B). Posterolateral surface with low, oblique striae, converging towards posterior carapace margin (Figs 3A, 4B). Orbits large; supraorbital, infraorbital margins cristate (Fig. 3B). Sub-orbital regions covered by sparse low granules, pterygostomial regions covered with short rows of a few rounded granules; sub-hepatic regions covered with lined striae (Fig. 3B). Epistome posterior margin narrow; median lobe broadly triangular, lateral margins slightly sinuous (Fig. 3B).
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</paragraph>
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<paragraph pageId="4" pageNumber="95">
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Maxilliped III merus about as wide as long; ischium width about 0.7
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<normalizedToken originalValue="×">x</normalizedToken>
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length; merus subtrapezoidal, with median depression; ischium subtrapezoidal, with distinct median sulcus, mesial margin rounded. Exopod reaching to proximal one-third of merus; flagellum short (Fig. 5A).
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</paragraph>
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<paragraph lastPageId="5" lastPageNumber="96" pageId="4" pageNumber="95">
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Chelipeds (pereiopod I) unequal (Figs 3A, 5
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<normalizedToken originalValue="F–I">F-I</normalizedToken>
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); less inflated in females (Figs 4B, 5H, I). Merus trigonal in cross section; margins crenulated, dorsal-outer surface granulated. Carpus with sharp spine at inner-distal angle, spinule at base (Figs 3A, 4B). Major cheliped palm length about 1.2-1.4
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<normalizedToken originalValue="×">x</normalizedToken>
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height in males (n = 5), 1.3
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<normalizedToken originalValue="×">x</normalizedToken>
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in female (n = 1); dactylus 0.9-1.0
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<normalizedToken originalValue="×">x</normalizedToken>
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palm length in males (n = 5), 0.9
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<normalizedToken originalValue="×">x</normalizedToken>
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in female (n = 1) (Fig. 5G, I). Palm surface pitted, dorsal-outer surface granulated in larger
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<pageBreakToken pageId="5" pageNumber="96" start="start">males</pageBreakToken>
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(Fig. 5G). Dactylus as long as pollex (Fig. 5
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<normalizedToken originalValue="F–I">F-I</normalizedToken>
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). Occlusal margin of fingers with irregular blunt teeth; slight gape when closed (Fig. 5
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<normalizedToken originalValue="F–I">F-I</normalizedToken>
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).
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</paragraph>
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<paragraph pageId="5" pageNumber="96">
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Ambulatory legs (pereiopods
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<normalizedToken originalValue="II–V">II-V</normalizedToken>
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) slender, setae short, very sparse (Figs 3A, 4B). Pereiopod III merus 0.6-0.7
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<normalizedToken originalValue="×">x</normalizedToken>
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carapace length in males (n = 5), 0.6
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<normalizedToken originalValue="×">x</normalizedToken>
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carapace length in female (n = 1) (Figs 3A, 4B). Pereiopods V propodus 2.1-2.2
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<normalizedToken originalValue="×">x</normalizedToken>
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as long as broad in males (n = 5), 2.1
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<normalizedToken originalValue="×">x</normalizedToken>
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as long as broad in female (n = 1), shorter than dactylus (Figs 3A, 4B).
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</paragraph>
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<paragraph pageId="5" pageNumber="96">
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Male thoracic sternum generally smooth; sternites
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<normalizedToken originalValue="I–IV">I-IV</normalizedToken>
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narrow, width about 1.5
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<normalizedToken originalValue="×">x</normalizedToken>
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length; sternites I, II forming triangular structure; sternites II, III fused, but demarcated by shallow transverse sulcus; sternites III, IV fused, demarcation inconspicuous (Fig. 4A). Male sterno-pleonal cavity reaching anteriorly beyond level of posterior articular condyle of cheliped coxa (Fig. 4A); deep median longitudinal groove between sternites VII, VIII (Fig. 3D). Male pleonal locking tubercle positioned at mid-length of sternite V (Fig. 3D). Female vulva ovate, medium-sized, not reaching the sutures of sternites V/VI or VI/VII, positioned closely to one another (Fig. 4D).
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</paragraph>
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<paragraph pageId="5" pageNumber="96">
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Male pleon triangular; somites
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<normalizedToken originalValue="III–VI">III-VI</normalizedToken>
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progressively narrower, lateral margins almost straight; somite VI width 1.8-2.1
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<normalizedToken originalValue="×">x</normalizedToken>
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length (n = 6); telson width 1.3-1.4
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<normalizedToken originalValue="×">x</normalizedToken>
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length (n = 6); apex rounded (Fig. 3C). Female pleon broadly ovate (Fig. 4C).
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</paragraph>
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<paragraph lastPageId="6" lastPageNumber="97" pageId="5" pageNumber="96">
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G1 slender; in-situ, tip of terminal segment exceeding pleonal locking tubercle, almost reaching suture between thoracic sternites IV/V (Fig. 3D); subterminal segment length about 3.1
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<normalizedToken originalValue="×">x</normalizedToken>
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length of terminal segment; subterminal segment tapering distally;
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<pageBreakToken pageId="6" pageNumber="97" start="start">terminal</pageBreakToken>
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segment large, distally expanded, distal margin laminar, slightly sinuous to V-shaped, apex blunt, directed outward, orientation perpendicular to oblique to main axis of G1 (Figs 5
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<normalizedToken originalValue="C–E">C-E</normalizedToken>
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, 6
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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). G2 subterminal segment about 1.9
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<normalizedToken originalValue="×">x</normalizedToken>
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length of flagelliform distal segment; exopod absent (Fig. 5B).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="6" pageNumber="97" type="etymology">
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<paragraph pageId="6" pageNumber="97">Etymology.</paragraph>
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<paragraph pageId="6" pageNumber="97">This species is named after the type locality, Macau; used as a noun in apposition.</paragraph>
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</subSubSection>
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<subSubSection pageId="6" pageNumber="97" type="colour in life">
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<paragraph pageId="6" pageNumber="97">Colour in life.</paragraph>
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<paragraph pageId="6" pageNumber="97">Variable, carapace and ambulatory legs dark brown to purple; chelipeds a combination of brown, orange and white (Fig. 2A).</paragraph>
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</subSubSection>
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<subSubSection pageId="6" pageNumber="97" type="habitat">
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<paragraph pageId="6" pageNumber="97">Habitat.</paragraph>
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<paragraph pageId="6" pageNumber="97">
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<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon macau" order="Decapoda" pageId="6" pageNumber="97" phylum="Arthropoda" rank="species" species="macau">Nanhaipotamon macau</taxonomicName>
|
||
sp. n. is a typical semi-terrestrial species that burrows in wet soil in the bank adjacent to hill streams. It was sympatric with
|
||
<taxonomicName class="Malacostraca" family="Potamidae" genus="Cantopotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cantopotamon hengqinense" order="Decapoda" pageId="6" pageNumber="97" phylum="Arthropoda" rank="species" species="hengqinense">Cantopotamon hengqinense</taxonomicName>
|
||
at three localities (
|
||
<geoCoordinate direction="north" orientation="latitude" precision="55" value="22.117">22.117N</geoCoordinate>
|
||
,
|
||
<geoCoordinate direction="east" orientation="longitude" precision="55" value="113.566">113.566E</geoCoordinate>
|
||
;
|
||
<geoCoordinate direction="north" orientation="latitude" precision="55" value="22.118">22.118N</geoCoordinate>
|
||
,
|
||
<geoCoordinate direction="east" orientation="longitude" precision="55" value="113.559">113.559E</geoCoordinate>
|
||
;
|
||
<geoCoordinate direction="north" orientation="latitude" precision="55" value="22.128">22.128N</geoCoordinate>
|
||
,
|
||
<geoCoordinate direction="east" orientation="longitude" precision="55" value="113.561">113.561E</geoCoordinate>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="6" pageNumber="97" type="distribution">
|
||
<paragraph pageId="6" pageNumber="97">Distribution.</paragraph>
|
||
<paragraph pageId="6" pageNumber="97">Coloane, Macau.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="6" pageNumber="97" type="remarks">
|
||
<paragraph pageId="6" pageNumber="97">Remarks.</paragraph>
|
||
<paragraph pageId="6" pageNumber="97">
|
||
As with many other species of
|
||
<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon" order="Decapoda" pageId="6" pageNumber="97" phylum="Arthropoda" rank="genus">Nanhaipotamon</taxonomicName>
|
||
,
|
||
<taxonomicName lsidName="N. macau" pageId="6" pageNumber="97" rank="species" species="macau">N. macau</taxonomicName>
|
||
sp. n. shows intraspecific variation in G1 morphology. In the terminal segment, the curves of the inner-distal and distal margins vary (Fig. 5
|
||
<normalizedToken originalValue="C–E">C-E</normalizedToken>
|
||
). The general shape and large size of the terminal segment, however, readily separates
|
||
<taxonomicName lsidName="N. macau" pageId="6" pageNumber="97" rank="species" species="macau">N. macau</taxonomicName>
|
||
from other congeners in the Pearl River Delta Region, such as
|
||
<taxonomicName lsidName="N. guangdongense" pageId="6" pageNumber="97" rank="species" species="guangdongense">N. guangdongense</taxonomicName>
|
||
Dai, 1997 (Fig. 7).
|
||
</paragraph>
|
||
<caption pageId="6" pageNumber="97">
|
||
<paragraph pageId="6" pageNumber="97">
|
||
Figure 7. Comparison of G1 of
|
||
<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon guangdongense" order="Decapoda" pageId="6" pageNumber="97" phylum="Arthropoda" rank="species" species="guangdongense">Nanhaipotamon guangdongense</taxonomicName>
|
||
Dai, 1997, from different localities. Male (38.4
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
31.5 mm), SYSBM 001141, Gujing, Jiangmen (A); male (40.8
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
32.2 mm), SYSBM 001142, Gujing, Jiangmen (B); male (36.7
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
29.4 mm), SYSBM 001143, Gujing, Jiangmen (C); male (35.4
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
29.4 mm), SYSBM 001177, Xiangzhou, Zhuhai (D); male (32.5
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
27.0 mm), SYSBM 001764, Xiangzhou, Zhuhai (E); male (40.1
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
32.7 mm), SYSBM 001758, Xiangzhou, Zhuhai (F); male (35.9
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
28.8 mm), SYSBM 001645, Coloane, Macau (G); male (45.5
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
37.0 mm), SYSBM 001656, Hengqin Island, Zhuhai (H); male (22.4
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
18.5 mm), SYSBM 001672, Jinwan, Zhuhai (I); male (33.4
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
26.5 mm), SYSBM 001017, Doumen, Zhuhai (J); male (36.9
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
30.4 mm), SYSBM 001657, Jinzhong Reservoir, Zhongshan (K); male (40.5
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
33.1 mm), SYSBM 001016,
|
||
<normalizedToken originalValue="Qi’ao">Qi'ao</normalizedToken>
|
||
Island, Zhuhai (L). Scale bars: 1.0 mm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph pageId="6" pageNumber="97">
|
||
<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon wupingense" order="Decapoda" pageId="6" pageNumber="97" phylum="Arthropoda" rank="species" species="wupingense">Nanhaipotamon wupingense</taxonomicName>
|
||
Cheng, Yang, Zhong & Li, 2003, from Fujian Province, is the only other known congener that also possesses such a large terminal segment. Based on the redscription of
|
||
<taxonomicName lsidName="N. wupingense" pageId="6" pageNumber="97" rank="species" species="wupingense">N. wupingense</taxonomicName>
|
||
below,
|
||
<taxonomicName lsidName="N. macau" pageId="6" pageNumber="97" rank="species" species="macau">N. macau</taxonomicName>
|
||
sp. n. differs by its larger maximum size (CW to 37.4 mm vs 27.5 mm in
|
||
<taxonomicName lsidName="N. wupingense" pageId="6" pageNumber="97" rank="species" species="wupingense">N. wupingense</taxonomicName>
|
||
;
|
||
<bibRefCitation author="Cheng, YZ" journalOrPublisher="Journal of Xiamen University (Natural Science)" pageId="17" pageNumber="108" pagination="676 - 678" title="A new species of the genus Nanhaipotamon (Decapoda: Potamid)." volume="42" year="2003">Cheng et al. 2003</bibRefCitation>
|
||
); more inflated and less rugose branchial regions (compare Figs 3A, B, 8A, B); pterygostomial region granules larger, less numerous (compare Figs 3B, 8B); the G1 tip usually points laterally and the convex anterior margin next to the tip is often lower (Figs 5
|
||
<normalizedToken originalValue="C–E">C-E</normalizedToken>
|
||
, 6
|
||
<normalizedToken originalValue="A–C">A-C</normalizedToken>
|
||
) (tip points anterolaterally with higher adjacent convex margin, Fig. 6D;
|
||
<bibRefCitation author="Cheng, YZ" journalOrPublisher="Journal of Xiamen University (Natural Science)" pageId="17" pageNumber="108" pagination="676 - 678" title="A new species of the genus Nanhaipotamon (Decapoda: Potamid)." volume="42" year="2003">Cheng et al. 2003</bibRefCitation>
|
||
: fig. 7); G1 subterminal segment length about 3.0-3.2
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
length of terminal segment in
|
||
<taxonomicName lsidName="N. macau" pageId="6" pageNumber="97" rank="species" species="macau">N. macau</taxonomicName>
|
||
sp. n. (Figs 5
|
||
<normalizedToken originalValue="C–E">C-E</normalizedToken>
|
||
, 6A) (2.7 in the neotype of
|
||
<taxonomicName lsidName="N. wupingense" pageId="6" pageNumber="97" rank="species" species="wupingense">N. wupingense</taxonomicName>
|
||
, see below, Fig. 6D). In keeping with their wide geographic separation, sequences of the COI barcoding region between
|
||
<taxonomicName lsidName="N. macau" pageId="6" pageNumber="97" rank="species" species="macau">N. macau</taxonomicName>
|
||
sp. n. (SYSBM 001654; GenBank accession number MK226142) and
|
||
<taxonomicName lsidName="N. wupingense" pageId="6" pageNumber="97" rank="species" species="wupingense">N. wupingense</taxonomicName>
|
||
(GenBank accession number: AB470511.1), courtesy of Hsi-Te Shih, shows a high (13.51%) Kimura 2-parameter (K2P) distance, corroborating their separate species status.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="6" pageNumber="97" type="conservation status">
|
||
<paragraph pageId="6" pageNumber="97">Conservation status.</paragraph>
|
||
<paragraph pageId="6" pageNumber="97">
|
||
<taxonomicName class="Malacostraca" family="Potamidae" genus="Nanhaipotamon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Nanhaipotamon macau" order="Decapoda" pageId="6" pageNumber="97" phylum="Arthropoda" rank="species" species="macau">Nanhaipotamon macau</taxonomicName>
|
||
sp. n. has an extremely restricted distribution with an extent of occurrence of only 5.3 km2 (excluding sea area) and an area of occupancy of around 3 km2. However, all 12 hill streams at which
|
||
<taxonomicName lsidName="N. macau" pageId="6" pageNumber="97" rank="species" species="macau">N. macau</taxonomicName>
|
||
sp. n. was found are not currently open to urban development (one of these, Ka-Ho Reservoir Freshwater Wetland, is a protected area) and they seem to be locally abundant. We are unaware of any commercial harvesting of these crabs for human consumption or the aquarium trade. As such, no imminent threats to this species are apparent and it cannot be assigned to any level of threat according the IUCN Red List criteria. However, we emphasize the fragility of this species due to its highly restricted distribution; the habitat integrity of the hills of Coloane is paramount to this
|
||
<normalizedToken originalValue="species’">species'</normalizedToken>
|
||
survival.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |