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<document id="0FA99E60B90BF377F2DFB1D86AB4ED2E" ID-CLB-Dataset="35231" ID-DOI="http://dx.doi.org/10.3897/zookeys.393.6717" ID-GBIF-Dataset="ca1977b6-7464-4c67-999d-761e0faa67ab" ID-PMC="PMC3974427" ID-Pensoft-Pub="1313-2970-393-1" ID-PubMed="24715783" ID-ZooBank="5B035E76BBD14A44A5D8C2140E6168F1" ModsDocAuthor="" ModsDocDate="2014" ModsDocID="1313-2970-393-1" ModsDocOrigin="ZooKeys 393" ModsDocTitle="A cybertaxonomic revision of the micro-landsnail genus Plectostoma Adam (Mollusca, Caenogastropoda, Diplommatinidae), from Peninsular Malaysia, Sumatra and Indochina" checkinTime="1451246065565" checkinUser="pensoft" docAuthor="Liew, Thor-Seng, Vermeulen, Jaap Jan, Marzuki, Mohammad Effendi bin &amp; Schilthuizen, Menno" docDate="2014" docId="D7BAA3FBD58EA8EB6AB5D1D0BD61581B" docLanguage="en" docName="ZooKeys 393: 1-107" docOrigin="ZooKeys 393" docSource="http://dx.doi.org/10.3897/zookeys.393.6717" docTitle="Plectostoma siphonostomum van Benthem Jutting 1952" docType="treatment" docVersion="5" lastPageNumber="35" masterDocId="A935FFF6FFE56726FFC5FFA8FFCE7A2A" masterDocTitle="A cybertaxonomic revision of the micro-landsnail genus Plectostoma Adam (Mollusca, Caenogastropoda, Diplommatinidae), from Peninsular Malaysia, Sumatra and Indochina" masterLastPageNumber="107" masterPageNumber="1" pageNumber="34" updateTime="1701373668194" updateUser="ExternalLinkService">
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<mods:title id="2A1382600E42C872A2C1B7E5A9ED5054">A cybertaxonomic revision of the micro-landsnail genus Plectostoma Adam (Mollusca, Caenogastropoda, Diplommatinidae), from Peninsular Malaysia, Sumatra and Indochina</mods:title>
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<mods:namePart id="098098F7730D0085E1CBE00B4248E1FE">Liew, Thor-Seng</mods:namePart>
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<mods:namePart id="F9BE09756E39A0C4B094E4FFCD7ED818">Vermeulen, Jaap Jan</mods:namePart>
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<mods:namePart id="B329E64DE69B9FCC2336875EB9FD094B">Marzuki, Mohammad Effendi bin</mods:namePart>
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<mods:namePart id="FD44819E1ADF49F42D7B47B08933952B">Schilthuizen, Menno</mods:namePart>
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<treatment id="D7BAA3FBD58EA8EB6AB5D1D0BD61581B" ID-GBIF-Taxon="152052222" LSID="urn:lsid:plazi:treatment:D7BAA3FBD58EA8EB6AB5D1D0BD61581B" httpUri="http://treatment.plazi.org/id/D7BAA3FBD58EA8EB6AB5D1D0BD61581B" lastPageId="34" lastPageNumber="35" pageId="33" pageNumber="34">
<subSubSection id="F84C5ED06821FF17FA51239F39CF5099" pageId="33" pageNumber="34" type="nomenclature">
<paragraph id="7360370094195790205BFD8C0BE7C8A9" pageId="33" pageNumber="34">
<taxonomicName id="6CF6826FE7BCA47FCE12988FBF2C219D" ID-CoL="7SRCT" LSID="http://species-id.net/wiki/Plectostoma_siphonostomum" authority="van Benthem Jutting, 1952" authorityName="van Benthem Jutting" authorityYear="1952" class="Gastropoda" family="Diplommatinidae" genus="Plectostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Plectostoma siphonostomum" order="Architaenioglossa" pageId="33" pageNumber="34" phylum="Mollusca" rank="species" species="siphonostomum">Plectostoma siphonostomum (van Benthem Jutting, 1952)</taxonomicName>
Figure 17N, 23, Appendix 8
</paragraph>
</subSubSection>
<subSubSection id="5B95A43DD3F65A97C9559B4EACEC0634" pageId="33" pageNumber="34" type="reference_group">
<paragraph id="CF9D24D0096BD075572100AB2697946F" pageId="33" pageNumber="34">
<taxonomicName id="835D2942BDC4837E341614CF853ECD8B" class="Gastropoda" family="Diplommatinidae" genus="Opisthostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Opisthostoma siphonostomum" order="Architaenioglossa" pageId="33" pageNumber="34" phylum="Mollusca" rank="species" species="siphonostomum">Opisthostoma siphonostomum</taxonomicName>
van Benthem Jutting, 1952: 52, figure 27 (original description).
</paragraph>
<paragraph id="039A2CF9D248D8D4B5715E9882AFEECD" pageId="33" pageNumber="34">
<taxonomicName id="F8A744B3F7ACB8B3F7D8FB13B6EFC3E4" class="Gastropoda" family="Diplommatinidae" genus="Opisthostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Opisthostoma siphonostomum" order="Architaenioglossa" pageId="33" pageNumber="34" phylum="Mollusca" rank="species" species="siphonostomum">Opisthostoma siphonostomum</taxonomicName>
van Benthem Jutting,
<bibRefCitation id="70A716093A058B2EF35396448F892F89" author="van Benthem Jutting, WSS" journalOrPublisher="The Bulletin of the National Museum" pageId="72" pageNumber="73" pagination="34 - 48" title="Additional new species and new localities of the family Vertiginidae and the genera Oophana and Opisthostoma from Malaya." url="http://rmbr.nus.edu.sg/rbz/biblio/26/26brm034-048.pdf" volume="26" year="1961">van Benthem Jutting (1961</bibRefCitation>
: 39).
</paragraph>
<paragraph id="7A80F0C1B4B42003C27C6C47F9546DC4" pageId="33" pageNumber="34">
<taxonomicName id="A68426F5533F6E8051DF0FC441AB9CB5" class="Gastropoda" family="Diplommatinidae" genus="Opisthostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Opisthostoma siphonostomum" order="Architaenioglossa" pageId="33" pageNumber="34" phylum="Mollusca" rank="species" species="siphonostomum">Opisthostoma siphonostomum</taxonomicName>
van Benthem Jutting,
<bibRefCitation id="41CC0117C4285A7EEC94F2B4F41258F9" author="Berry, AJ" journalOrPublisher="Proceedings of the Zoological Society of London" pageId="72" pageNumber="73" pagination="655 - 664" title="The reproduction of the minute cyclophorid snail Opisthostoma (Plectostoma) retrovertens from a Malayan limestone hill." url="10.1111/j.1469-7998.1964.tb04633.x" volume="142" year="1964">Berry (1964</bibRefCitation>
: 203).
</paragraph>
</subSubSection>
<subSubSection id="614AEABA02AFEB6B5B04EE7AB95E7AA7" pageId="33" pageNumber="34" type="type material">
<paragraph id="118DB53C1C8AA27188ED48587D413FD5" pageId="33" pageNumber="34">Type material.</paragraph>
<paragraph id="40390D3B1898DCA8E790EF2A5F5671BA" pageId="33" pageNumber="34">Holotype: ZMA 136054(1) (Seen). Paratype: ZMA 136055(8) (Seen).</paragraph>
</subSubSection>
<subSubSection id="34337FE5237B6E610119EF83349A5165" pageId="33" pageNumber="34" type="other examined materials">
<paragraph id="A980AD186731E484F23B5B149E5D5901" pageId="33" pageNumber="34">Other examined materials.</paragraph>
<paragraph id="E5DE835632A01902BEFB206DFBA21EB0" pageId="33" pageNumber="34">ZMA 162138(&gt;100), BOR 5513 (&gt;25), BOR 5521(&gt;10), BOR 5557(&gt;10), V 8199(&gt;50), V 8223(&gt;25).</paragraph>
</subSubSection>
<subSubSection id="5B08A28C560D0759B7B39010B9FAE602" pageId="33" pageNumber="34" type="diagnosis">
<paragraph id="ABB142B5D9920E32634B8BD5CACFACEE" pageId="33" pageNumber="34">Diagnosis.</paragraph>
<paragraph id="283B3B4372840B0BA3A19DA7421FC173" pageId="33" pageNumber="34">
Shares with
<taxonomicName id="1815086A5CC6FCF80928729563B72CC0" class="Gastropoda" family="Diplommatinidae" genus="Plectostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Plectostoma christae" order="Architaenioglossa" pageId="33" pageNumber="34" phylum="Mollusca" rank="species" species="christae">Plectostoma christae</taxonomicName>
the tuba form, but differs by having an oblong conical apical and conical basal spire.
</paragraph>
</subSubSection>
<subSubSection id="64D5EB367D201B7D8AB8772EA3D280F3" pageId="33" pageNumber="34" type="description">
<paragraph id="7C068176F1778E75169A92406039D66E" pageId="33" pageNumber="34">Description.</paragraph>
<paragraph id="7CA5728374073411B1BC3ADD56D305C1" pageId="33" pageNumber="34">Apex. Shape: distinctly convex.</paragraph>
<paragraph id="055B0DCE368D21E71A2466BC1EA66B21" pageId="33" pageNumber="34">Spire. Height: 1.9-2.1 mm. Width: 1.2-1.5 mm. Number of whorls: 4 3/4-5. Apical spire shape: oblong conical. Basal spire shape: conical. Whorl periphery: distinctly convex. Umbilicus: Open.</paragraph>
<paragraph id="385FF84C1A62CE1C218E0DED284DC07B" pageId="33" pageNumber="34">Constriction. Parietal teeth: two. Basal teeth: none.</paragraph>
<paragraph id="CA1445B36A8C0D9B354640DB0AE9DB18" pageId="33" pageNumber="34">Tuba. Coiling direction: type 1 and aperture visible between right lateral and back view. Tuba whorl length in proportion to spire last whorl: ca. 3/8-1/2. Proportion of tuba that attaches to spire: at least 1/2.</paragraph>
<paragraph id="2F5E9A8A7CC85464C8320DAE227959D3" pageId="33" pageNumber="34">Aperture and peristome. Peristome: double peristomes. Outer peristome shape: same as inner peristome and uniformly projected all around, except the posterior part.</paragraph>
<paragraph id="40A1340FDE7CE4ED940FB1F4C4B590E7" pageId="33" pageNumber="34">Spiral lines. Thick lines: present. Thin lines: present.</paragraph>
<paragraph id="E678F2EDF2ABDB99E6E1D5A6914E404D" pageId="33" pageNumber="34">Radial ribs. Rib density: 7-8 ribs per mm. Rib intensity: thin. Shape: slightly curved. Inclination: orthoclin.</paragraph>
<caption id="A529C5CD25D24340719FCC7EA2ADE1B0" pageId="33" pageNumber="34">
<paragraph id="1BBF10B31CBF9FCF4D091AA5A4259AF7" pageId="33" pageNumber="34">
Figures 23.
<taxonomicName id="CBDDEE34835A9BF729B7B9AC128F225C" class="Gastropoda" family="Diplommatinidae" genus="Plectostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Plectostoma siphonostomum" order="Architaenioglossa" pageId="33" pageNumber="34" phylum="Mollusca" rank="species" species="siphonostomum">Plectostoma siphonostomum</taxonomicName>
(van Benthem Jutting, 1952) BOR5539. A frontal view B left lateral view C back view D right lateral view E top view F bottom view G parietal part of constriction inner whorl H basal part of constriction inner whorl. Scale bar = 1 mm (for
<normalizedToken id="C5C0388B507C7B13F7A61EE1EC589AF8" originalValue="AF">A-F</normalizedToken>
).
</paragraph>
</caption>
</subSubSection>
<subSubSection id="BF4E67816063C6F7E05FDAE52C692121" pageId="33" pageNumber="34" type="distribution">
<paragraph id="E038004113228F70D7432403565BE1D3" pageId="33" pageNumber="34">Distribution.</paragraph>
<paragraph id="19153342600EE85AF1E4A31EF93D571E" pageId="33" pageNumber="34">
Type locality. Gua Siput, Taman Negara, Pahang (
<geoCoordinate id="D8423888ED87AA0C87AE989F8C6B1AE9" direction="north" orientation="latitude" precision="15" value="4.4463887">4°26'47&quot;N</geoCoordinate>
,
<geoCoordinate id="D73DD1BB1C4E424C9BF42C95833072A2" direction="east" orientation="longitude" precision="15" value="102.24555">102°14'44&quot;E</geoCoordinate>
).
</paragraph>
<paragraph id="9BA1D0F9F0B9D914DFF368A65027AFF5" pageId="33" pageNumber="34">
Distribution range.
<taxonomicName id="2B1B96E49E7249E4CC60F385810B9B30" class="Gastropoda" family="Diplommatinidae" genus="Plectostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Plectostoma siphonostomum" order="Architaenioglossa" pageId="33" pageNumber="34" phylum="Mollusca" rank="species" species="siphonostomum">Plectostoma siphonostomum</taxonomicName>
has a similar distribution pattern as
<taxonomicName id="E3E88CA40C453D8C8548788602BC1421" class="Gastropoda" family="Diplommatinidae" genus="Plectostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Plectostoma salpidomon" order="Architaenioglossa" pageId="33" pageNumber="34" phylum="Mollusca" rank="species" species="salpidomon">Plectostoma salpidomon</taxonomicName>
and often occurs sympatrically with that species. It can be found in many limestone outcrops in the valley between the Titingwangsa Range, Tahan Range and Benom Range (Figure 18D).
</paragraph>
</subSubSection>
<subSubSection id="1CBFAA28DF9A754B4E6C99CACDBFE6FB" pageId="34" pageNumber="35" type="conservation status">
<paragraph id="660E640F40EA5FEEF50AFB97A1454D49" pageId="34" pageNumber="35">
<pageBreakToken id="6BD4EA245D14514152F3E7A0BF56CCCE" pageId="34" pageNumber="35" start="start">Conservation</pageBreakToken>
status.
</paragraph>
<paragraph id="47353EB11D9DCBA703D78F9B4A6FD6FC" pageId="34" pageNumber="35">
Least concern. Living populations of
<taxonomicName id="94B703A4BCED88B141C26C37899B7601" class="Gastropoda" family="Diplommatinidae" genus="Plectostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Plectostoma siphonostomum" order="Architaenioglossa" pageId="34" pageNumber="35" phylum="Mollusca" rank="species" species="siphonostomum">Plectostoma siphonostomum</taxonomicName>
were recorded at several limestone hills during surveys between 2010 and 2011. Several of these are located within the National Park.
</paragraph>
</subSubSection>
<subSubSection id="E4431A851B7D2DDD1DCE755897F29467" pageId="34" pageNumber="35" type="discussion">
<paragraph id="57CC7448FAF2DA5B8A0930B0449BAC48" pageId="34" pageNumber="35">Discussion.</paragraph>
<paragraph id="85B0ADE7843AFAEBE994D3AE2838EB13" pageId="34" pageNumber="35">
See discussion under
<taxonomicName id="F3CE56DDBD9310D11BEAF5B634CD16EC" class="Gastropoda" family="Diplommatinidae" genus="Plectostoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Plectostoma christae" order="Architaenioglossa" pageId="34" pageNumber="35" phylum="Mollusca" rank="species" species="christae">Plectostoma christae</taxonomicName>
.
</paragraph>
</subSubSection>
</treatment>
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