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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1176.106517" ID-Pensoft-Pub="1313-2970-1176-195" ID-Pensoft-UUID="C9EEC2951C5C5E459A7949F814B83385" ID-ZooBank="5679EDE1564C4D5B9A08E14A97768D98" ModsDocID="1313-2970-1176-195" checkinTime="1693297219515" checkinUser="pensoft" docAuthor="Chanabun, Ratmanee, Aoonkum, Anuwat, Seesamut, Teerapong, Bantaowong, Ueangfa &amp; Panha, Somsak" docDate="2023" docId="5926B02CE58958D1ABE13CEB838E456E" docLanguage="en" docName="ZooKeys 1176: 195-219" docOrigin="ZooKeys 1176" docPubDate="2023-08-28" docSource="http://dx.doi.org/10.3897/zookeys.1176.106517" docTitle="Amynthas auriculus Chanabun &amp; Panha, sp. nov." docType="treatment" docVersion="2" id="C9EEC2951C5C5E459A7949F814B83385" lastPageNumber="195" masterDocId="C9EEC2951C5C5E459A7949F814B83385" masterDocTitle="Four new terrestrial earthworm species from the northeast Thailand (Oligochaeta, Megascolecidae)" masterLastPageNumber="219" masterPageNumber="195" pageNumber="195" updateTime="1693297520970" updateUser="ExternalLinkService">
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<mods:title id="60BBBFA000B1B5F689BFAFDF825CD11A">Four new terrestrial earthworm species from the northeast Thailand (Oligochaeta, Megascolecidae)</mods:title>
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<mods:name id="241A67FEAC0C91EAEB5439F83B65A501" type="personal">
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<mods:namePart id="2C1CCF501859E067900AF99EA9CCB04D">Chanabun, Ratmanee</mods:namePart>
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<mods:affiliation id="1D5BE7109C400DA70C6BF3B298359C03">Program in Animal Science, Faculty of Agricultural Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand</mods:affiliation>
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<mods:namePart id="E9E142C7CE851AE63A2388751285E63F">Aoonkum, Anuwat</mods:namePart>
<mods:nameIdentifier id="829758539716CC64EE811AF9269A147F" type="ORCID">https://orcid.org/0000-0002-3895-9570</mods:nameIdentifier>
<mods:affiliation id="68BEFA4F9C8CE784138D97C96F936C3A">Program in Animal Science, Faculty of Agricultural Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand</mods:affiliation>
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<mods:namePart id="B06C65D633CB5467127B945825F1F2D6">Seesamut, Teerapong</mods:namePart>
<mods:nameIdentifier id="17B62AF7BA6B9FEDC72E024C0EC893A9" type="ORCID">https://orcid.org/0009-0003-9589-8641</mods:nameIdentifier>
<mods:affiliation id="B339AC953A63CF491123AEEAC9AE7418">Biodiversity and Utilization Research Unit, Center of Excellence in Modern Agriculture, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand</mods:affiliation>
</mods:name>
<mods:name id="FA3F6A5A0C54D94A0E433C5B36452208" type="personal">
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<mods:namePart id="806168E7A7FC4B7A5C173A3166FCD4F5">Bantaowong, Ueangfa</mods:namePart>
<mods:nameIdentifier id="4FC3873A8DD795BB29015B28E132A83D" type="ORCID">https://orcid.org/0009-0000-6068-7930</mods:nameIdentifier>
<mods:affiliation id="FE209570301CEF7BF33205772303D262">Faculty of Agricultural Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand</mods:affiliation>
</mods:name>
<mods:name id="BFD73AC687F7F98CD07AABA2167D5D80" type="personal">
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<mods:namePart id="788E58026AE6F3DB1C5263F26A88B07D">Panha, Somsak</mods:namePart>
<mods:nameIdentifier id="F41B36E384B3A4E3FB08E355A32DDA68" type="ORCID">https://orcid.org/0000-0002-4431-2458</mods:nameIdentifier>
<mods:affiliation id="30F1C85FC67CFCEC2D0C040415359B12">Department of Biology, Faculty of Science, Rangsit University, Pathum Thani, 12000, Thailand</mods:affiliation>
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<treatment id="5926B02CE58958D1ABE13CEB838E456E" LSID="urn:lsid:zoobank.org:act:2CA10F55-D79F-4D5C-972F-22FA890B6340" httpUri="http://treatment.plazi.org/id/5926B02CE58958D1ABE13CEB838E456E" lastPageNumber="195" pageId="0" pageNumber="195">
<subSubSection id="C73B9559C9906517469C086CA85F23F9" pageId="0" pageNumber="195" type="nomenclature">
<paragraph id="D6537A42256187F5A2734A03447BC228" pageId="0" pageNumber="195">
<taxonomicName id="D75E80026A735A43603455DE3B4C4058" LSID="https://zoobank.org/2CA10F55-D79F-4D5C-972F-22FA890B6340" authority="Chanabun &amp; Panha, sp. nov." authorityName="Chanabun &amp; Panha, sp. nov." class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas auriculus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="auriculus">Amynthas auriculus Chanabun &amp; Panha, sp. nov.</taxonomicName>
</paragraph>
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<subSubSection id="A9A5695905C3D6A3D1807B3990E1F8EC" pageId="0" pageNumber="195" type="description">
<paragraph id="7207DE687F203DFADD3D01A71CD09A79" pageId="0" pageNumber="195">
<figureCitation id="575C00E14F50CE020D66A46C4CD66925" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Photographs showing the A type locality of Amynthas auriculus sp. nov. from Wut Tham Kham, Phannanikom, Sakon Nakhon, Thailand B casts of the new species C coloration of a living paratype, and D coloration of a newly collected paratype (CUMZ 3826) after the first preservation step in 30 % (v / v) ethanol." figureDoi="10.3897/zookeys.1176.106517.figure7" httpUri="https://binary.pensoft.net/fig/897722" pageId="0" pageNumber="195">Figs 7</figureCitation>
<figureCitation id="F60C0462264027E7435E196094BA579E" captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. External and internal morphology of Amynthas auriculus sp. nov., holotype (CUMZ 3825) A external ventral view B internal dorsal view, and C spermatheca with location of spermathecal pore arrowed." figureDoi="10.3897/zookeys.1176.106517.figure8" httpUri="https://binary.pensoft.net/fig/897723" pageId="0" pageNumber="195">, 8</figureCitation>
</paragraph>
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<subSubSection id="EC1F2F9554C9C99D7DB659210AC88150" pageId="0" pageNumber="195" type="type material">
<paragraph id="C50506CB9142996AC5277AA34C766C9B" pageId="0" pageNumber="195">Type material.</paragraph>
<paragraph id="0BC0A45904ECED506BFC8560B0A4BCDE" pageId="0" pageNumber="195">
<emphasis id="3CE5DC0DF22DF79D7290AC76DE2D2EB3" bold="true" italics="true" pageId="0" pageNumber="195">Holotype</emphasis>
: Adult specimen (CUMZ 3825) Wut Tham Kham, Phannanikom, Sakon Nakhon, northeast of Thailand,
<geoCoordinate id="55F487EA06C69A5F2FF06E216F536553" degrees="17" direction="north" minutes="13" orientation="latitude" precision="1" seconds="06.2" value="17.21839">17°13'06.2&quot;N</geoCoordinate>
,
<geoCoordinate id="3C7337ACCC6970FB76DE98ADD7087E37" degrees="103" direction="east" minutes="54" orientation="longitude" precision="1" seconds="00.7" value="103.90019">103°54'00.7&quot;E</geoCoordinate>
, 403 m a.m.s.l., 9 October 2019, coll. R. Chanabun, A. Aoonkum.
<emphasis id="D1810FAF8878E3DE58A4795811BF2177" bold="true" italics="true" pageId="0" pageNumber="195">Paratypes</emphasis>
: 2 adults (CUMZ 3826), 2 adults (NHMUK), same collection data as for holotype.
</paragraph>
<caption id="D86DD42AAEE89C5EEC05A41CA302CFE6" doi="10.3897/zookeys.1176.106517.figure7" httpUri="https://binary.pensoft.net/fig/897722" pageId="0" pageNumber="195" start="Figure 7" startId="F7">
<paragraph id="6E87433D3146335AFEE11FC1F0F81D4B" pageId="0" pageNumber="195">
<emphasis id="6B52BC2D22EEFA9D4A23E524BF457988" bold="true" pageId="0" pageNumber="195">Figure 7.</emphasis>
Photographs showing the
<emphasis id="9B3A7D4C4A4F1802BE7DFE01DE8C11D0" bold="true" pageId="0" pageNumber="195">A</emphasis>
type locality of
<taxonomicName id="BAD34EE3B63C898E5824F09E2CFBCF7D" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas auriculus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="auriculus">
<emphasis id="4D3D9CAF1636B477D9C08EA47856BC3A" italics="true" pageId="0" pageNumber="195">Amynthas auriculus</emphasis>
</taxonomicName>
sp. nov. from Wut Tham Kham, Phannanikom, Sakon Nakhon, Thailand
<emphasis id="F0AA88FA0DDF8A0BE4892F42312CD8A5" bold="true" pageId="0" pageNumber="195">B</emphasis>
casts of the new species
<emphasis id="4B8349CB7CB009A0B2915EB9DC3B8DF5" bold="true" pageId="0" pageNumber="195">C</emphasis>
coloration of a living paratype, and
<emphasis id="88DB4807530480B4FB763A61F1117FC2" bold="true" pageId="0" pageNumber="195">D</emphasis>
coloration of a newly collected paratype (CUMZ 3826) after the first preservation step in 30% (v/v) ethanol.
</paragraph>
</caption>
</subSubSection>
<subSubSection id="B1F85567752308419447B6F6EADB2388" pageId="0" pageNumber="195" type="diagnosis">
<paragraph id="EBF4A63835400E29835A99D8E2366DF5" pageId="0" pageNumber="195">Diagnosis.</paragraph>
<paragraph id="E3710E972718307EDC7A8D6140A837B0" pageId="0" pageNumber="195">Medium-large size, length 184-267 mm, diameter 9-11 mm, 95-151 segments. Paired male pores at segment XVIII, surrounded by three genital papillae, each male pore region somewhat ear-shaped after fixation. Paired spermathecal pores in intersegments 6/7-8/9. Spermathecae are large, elongated sacs, with slender stalks of the ampulla, and diverticulum very short and zigzagged from its origin until the end. Holandric. Intestinal caeca simple. First dorsal pore in 12/13. Prostate glands large in XVI-XXIV, the prostate duct large, slender, smooth, and a bit zigzagged at the end, surrounded by a large sessile glandular mass on the body wall.</paragraph>
<caption id="C952E7E89345DD2B1349A8364B7C36E0" doi="10.3897/zookeys.1176.106517.figure8" httpUri="https://binary.pensoft.net/fig/897723" pageId="0" pageNumber="195" start="Figure 8" startId="F8">
<paragraph id="0E7A19B0145B1F9BF1FF072A45B21E2C" pageId="0" pageNumber="195">
<emphasis id="5462C8EFC4139089E6520B2AB073B14C" bold="true" pageId="0" pageNumber="195">Figure 8.</emphasis>
External and internal morphology of
<taxonomicName id="B8A771BDC1DF49153EBD595F8E888C18" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas auriculus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="auriculus">
<emphasis id="A2915722E5491307A7538913EA56D2A4" italics="true" pageId="0" pageNumber="195">Amynthas auriculus</emphasis>
</taxonomicName>
sp. nov., holotype (CUMZ 3825)
<emphasis id="4C6D9700713EA7F2A119DC8B714E0B5A" bold="true" pageId="0" pageNumber="195">A</emphasis>
external ventral view
<emphasis id="ACB1EB1BB7CA058F4D7C84326208C9B9" bold="true" pageId="0" pageNumber="195">B</emphasis>
internal dorsal view, and
<emphasis id="2E60172EFD9EB590E6AAF7C50458CC5A" bold="true" pageId="0" pageNumber="195">C</emphasis>
spermatheca with location of spermathecal pore arrowed.
</paragraph>
</caption>
</subSubSection>
<subSubSection id="4583B9DEC11F2BEAA42A8763A00B88C7" pageId="0" pageNumber="195" type="description">
<paragraph id="79C4760F6B45C1AB8586E2712A5CAAF4" pageId="0" pageNumber="195">Description of the holotype.</paragraph>
<paragraph id="89C83A52953C428D68DD485B96A462C5" pageId="0" pageNumber="195">Length 267 mm, diameter 10 mm, body cylindrical. 139 segments. Preserved specimens are dark brownish on the dorsal part and pale gray on the ventral part. Setae are regularly distributed around segmental equators, numbering 27 at segment VII, 62 at segment XX, and 20 between male pores at segment XVIII. Setal formula AA:AB:ZZ:ZY = 1:1:2:1 at XIII. At segment XIV, a single female pore mid-ventrally. Prostomium epilobic. First dorsal pore in 12/13. Clitellum annular in segments XIV-XVI with no dorsal pores or setae.</paragraph>
<paragraph id="35355C93AEBCC09E7E0EBE12149DE67C" pageId="0" pageNumber="195">
Male pores paired, superficial, convex, located on ventral side of segment XVIII, in between small genital markings; each male pore region somewhat ear-shaped after fixation in ethanol. Male pores ~ 7 mm apart, distance 0.29
<normalizedToken id="9F9D7735766AA8B874A40187FE40363C" originalValue="×">x</normalizedToken>
the body circumference. Single female pore at XIV. At segment XVIII, each male pore is lined by two anterior genital markings above the setal line, and one posterior genital marking below the setal line. Spermathecal pores three pairs in 6/7-8/9, distance between each pair is ~ 0.37
<normalizedToken id="E5CF46D2D5ED8C0502AB0FF3173B0EF9" originalValue="×">x</normalizedToken>
the circumference ventrally, there are no genital markings in this area.
</paragraph>
<paragraph id="728BD216E0B1F13DD32DBF73E88D01A4" pageId="0" pageNumber="195">The septa are thick in 5/6-7/8; absent in 8/9-9/10; slightly thick in 10/11-11/12; thin in 12/13-14/15; and very thin behind 15/16. Gizzard large at IX-X. Intestine begins at segment XV. Long and simple intestinal caeca in XXVII-XXI. Esophageal hearts four pairs in segment X-XIII. Holandric; testes and funnels in X and XI. Seminal vesicles paired in XI-XII. Prostate glands divided into several lobules, in XVI-XXIV, large and well-developed. Prostate duct large, slender, smooth, and a bit zigzagged, surrounded by a large sessile glandular mass on the body wall on segments XVIII-XXI.</paragraph>
<paragraph id="9F1DFC0A1329A13AD44FD81008D9362A" pageId="0" pageNumber="195">Ovaries in segment XIII. Three pairs spermathecae in VII-IX. Spermathecae large, elongated sacs with slender stalks of the ampulla, diverticulum very short and zigzagged from its origin until the end.</paragraph>
</subSubSection>
<subSubSection id="E8D6794E30A21FD11DD4CB06D3D52BB1" pageId="0" pageNumber="195" type="variation">
<paragraph id="CA8C2E371C35DABCEDB575D8FFCEE756" pageId="0" pageNumber="195">Variation.</paragraph>
<paragraph id="F5173B6B533BC7BBD58F667A5EA38C7E" pageId="0" pageNumber="195">
Four paratypes range in size from 184-224 mm (218.20
<normalizedToken id="4C82B2EDF4040C0CC4FD3D961BBD7419" originalValue="±">+/-</normalizedToken>
30.80 mm) body length with 95-151 (128.40
<normalizedToken id="A9262279B3A53CB8ED4CD0A1CE6D99BC" originalValue="±">+/-</normalizedToken>
22.65) segments (Table
<tableCitation id="6869ED1ADE5AA2240C5B31052D71354F" captionStart="Table 3" captionStartId="T3" captionText="Table 3. Holotype and paratype dimensions and other morphological characteristics of Amynthas auriculus sp. nov." httpUri="http://table.plazi.org/id/79F29B8252AD67F274E7EC8E47DD8BDA" pageId="0" pageNumber="195" tableUuid="79F29B8252AD67F274E7EC8E47DD8BDA">3</tableCitation>
).
</paragraph>
<caption id="79F29B8252AD67F274E7EC8E47DD8BDA" ID-Table-UUID="79F29B8252AD67F274E7EC8E47DD8BDA" httpUri="http://table.plazi.org/id/79F29B8252AD67F274E7EC8E47DD8BDA" pageId="0" pageNumber="195" start="Table 3" startId="T3">
<paragraph id="D15AC43B09237574E41AEDC67022C7F4" pageId="0" pageNumber="195">
<emphasis id="3B5392412CD83ACB843096874AB0A878" bold="true" pageId="0" pageNumber="195">Table 3.</emphasis>
Holotype and paratype dimensions and other morphological characteristics of
<taxonomicName id="A342A74DB50813148BB087891C2E794B" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas auriculus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="auriculus">
<emphasis id="E997D7686B197F4A0C00ABF2A1F1A553" italics="true" pageId="0" pageNumber="195">Amynthas auriculus</emphasis>
</taxonomicName>
sp. nov.
</paragraph>
</caption>
<paragraph id="243051B150A1B0CF163AA830C20E11C3" pageId="0" pageNumber="195">
<table id="F5C3DD9CCD2837EAEF52FE85DABDB7FB" pageId="0" pageNumber="195">
<tr id="FB09640E89B59F0F9300FB6EEB43EB72" pageId="0" pageNumber="195">
<th id="61F2EAD54C5062F7FCE63C7ED132D7CE" colspan="1" pageId="0" pageNumber="195" rowspan="1">Characters</th>
<th id="EB37E0EED54EC3F66BF7C331C5C4140F" colspan="1" pageId="0" pageNumber="195" rowspan="1">Body length (mm)</th>
<th id="7834D62D267A1175551B2D5FE7E6F42A" colspan="1" pageId="0" pageNumber="195" rowspan="1">Number of segments</th>
<th id="116B58C563E968C8C239762EAE337B1B" colspan="1" pageId="0" pageNumber="195" rowspan="1">Location of genital markings</th>
<th id="E4684A6C4BD4860BEFFE8EBB3D431244" colspan="1" pageId="0" pageNumber="195" rowspan="1">Number of genital markings</th>
<th id="79F3CA8CA1A9A21A9D432C31206EDFA1" colspan="1" pageId="0" pageNumber="195" rowspan="1">First dorsal pore</th>
<th id="4659FB65F2AD34BA31745C578822A227" colspan="1" pageId="0" pageNumber="195" rowspan="1">Prostate glands</th>
<th id="56FF1026BDEB746154B5DDA8C803E1BC" colspan="1" pageId="0" pageNumber="195" rowspan="1">Intestinal caeca</th>
<th id="69870255D453773971D0EC8D0E70AE9A" colspan="1" pageId="0" pageNumber="195" rowspan="1">Genital marking gland</th>
</tr>
<tr id="2A220516B931EB40DF0C334B362A2213" pageId="0" pageNumber="195">
<td id="AFF54D1FE66575A3187DCEA322295102" colspan="1" pageId="0" pageNumber="195" rowspan="1">Holotype CUZM 3825</td>
<td id="8FA00C7A1B11EBC38B7AE55C4AF46668" colspan="1" pageId="0" pageNumber="195" rowspan="1">267</td>
<td id="0544914B4694C278F038251E03F92AEC" colspan="1" pageId="0" pageNumber="195" rowspan="1">139</td>
<td id="C8A04F503511427A13C8935886B05459" colspan="1" pageId="0" pageNumber="195" rowspan="1">XVIII</td>
<td id="17283BC9DDDB4B1141E2851F009F963C" colspan="1" pageId="0" pageNumber="195" rowspan="1">3</td>
<td id="61234BF71779AE7333513D39B87B9341" colspan="1" pageId="0" pageNumber="195" rowspan="1">12/13</td>
<td id="D0301675802B7D6A82E0A3C5DDF87CFF" colspan="1" pageId="0" pageNumber="195" rowspan="1">XVI-XXIV</td>
<td id="8ED58FFA9D17EA243010C736BF106639" colspan="1" pageId="0" pageNumber="195" rowspan="1">XXVII-XXI</td>
<td id="51DE9C658D89C45DA4155A8EECC809DE" colspan="1" pageId="0" pageNumber="195" rowspan="1">present</td>
</tr>
<tr id="25B6B51832F7F32E02C1310A50C40F3F" pageId="0" pageNumber="195">
<td id="EB1535F759A3BB3A4E70CBBE542EA23F" colspan="1" pageId="0" pageNumber="195" rowspan="1">Paratype CUMZ 3826</td>
<td id="3F8DFA9C411512090B1769BBFFBA8C88" colspan="1" isEmpty="true" pageId="0" pageNumber="195" rowspan="1">-</td>
<td id="C7E1D5A0DED4B9C09A07AFCE6BD4DAFB" colspan="1" isEmpty="true" pageId="0" pageNumber="195" rowspan="1">-</td>
<td id="F33913EB58FB62927D06E8EBEF4580E9" colspan="1" isEmpty="true" pageId="0" pageNumber="195" rowspan="1">-</td>
<td id="578AAE8781A599840CD014D839CC58C7" colspan="1" isEmpty="true" pageId="0" pageNumber="195" rowspan="1">-</td>
<td id="B8D1055F8F54DE7FF42276A6EF875872" colspan="1" isEmpty="true" pageId="0" pageNumber="195" rowspan="1">-</td>
<td id="A5FDFDDEE9B6D5B1EDE4190C6926CD36" colspan="1" isEmpty="true" pageId="0" pageNumber="195" rowspan="1">-</td>
<td id="57972864A57B2AB9DA0FCABBF43EFA20" colspan="1" isEmpty="true" pageId="0" pageNumber="195" rowspan="1">-</td>
<td id="25901FFE352666343A5F692A4E3A8162" colspan="1" isEmpty="true" pageId="0" pageNumber="195" rowspan="1">-</td>
</tr>
<tr id="7AC4AFD8E7F6A8918D06EC911BC497BC" pageId="0" pageNumber="195">
<td id="A6116A4F0B68F748C8CD8BF7CDA01F3E" colspan="1" pageId="0" pageNumber="195" rowspan="1">1</td>
<td id="4A2145AFE6E38BE373727C8BBB4B6CDA" colspan="1" pageId="0" pageNumber="195" rowspan="1">224</td>
<td id="762F82E9548E5E68682E43C33AE6AA87" colspan="1" pageId="0" pageNumber="195" rowspan="1">151</td>
<td id="A37B9ADD6D66F719699D4FE3253E7E00" colspan="1" pageId="0" pageNumber="195" rowspan="1">XVIII</td>
<td id="EC312F029A0C6DA107908EEB83EDDA57" colspan="1" pageId="0" pageNumber="195" rowspan="1">3</td>
<td id="D1E602825CF85E10366F08151EE9A8E9" colspan="1" pageId="0" pageNumber="195" rowspan="1">12/13</td>
<td id="D30AD11B55E686503338105E3E094463" colspan="1" pageId="0" pageNumber="195" rowspan="1">XV-XXV</td>
<td id="DFD8715951BEB0E7F4468EC43A4796F5" colspan="1" pageId="0" pageNumber="195" rowspan="1">XXVII-XXI</td>
<td id="78B80FF4B55A8C3B7464E92C69C90AD6" colspan="1" pageId="0" pageNumber="195" rowspan="1">present</td>
</tr>
<tr id="E1127A6F34C50FA89AE09F2A890562B8" pageId="0" pageNumber="195">
<td id="5AFE5F4093FB1A14609E4C120277FDD6" colspan="1" pageId="0" pageNumber="195" rowspan="1">2</td>
<td id="D164221A213607E2175AC60A5DC401AF" colspan="1" pageId="0" pageNumber="195" rowspan="1">207</td>
<td id="AF6A6323B442185F65A35411AE4E61A7" colspan="1" pageId="0" pageNumber="195" rowspan="1">116</td>
<td id="E541A03541849D199F3C81251080C314" colspan="1" pageId="0" pageNumber="195" rowspan="1">XVIII</td>
<td id="43B9676E7A8F17B69EE0E7032461CA77" colspan="1" pageId="0" pageNumber="195" rowspan="1">3</td>
<td id="69286AA589869D292BA76731FB3774E0" colspan="1" pageId="0" pageNumber="195" rowspan="1">12/13</td>
<td id="738763A2AFA10F7C4182AD3A1D3BBECB" colspan="1" pageId="0" pageNumber="195" rowspan="1">XVI-XXIV</td>
<td id="8CDF2116728A017C4989815D23BDFFE7" colspan="1" pageId="0" pageNumber="195" rowspan="1">XXVII-XXI</td>
<td id="305644B80F8061ED6C18671AE3281194" colspan="1" pageId="0" pageNumber="195" rowspan="1">present</td>
</tr>
<tr id="B786330B1E595E35ABED3F4B47C78C1C" pageId="0" pageNumber="195">
<td id="58E975A9A9E0469066CD29C1D74124E0" colspan="1" pageId="0" pageNumber="195" rowspan="1">3</td>
<td id="417D59248630A0342D5DAE9940297DFD" colspan="1" pageId="0" pageNumber="195" rowspan="1">209</td>
<td id="DCF5DFC058F2FC11A1334BAE801F8637" colspan="1" pageId="0" pageNumber="195" rowspan="1">141</td>
<td id="B1183AB49AB09AFF2D55DEEDF04ADE19" colspan="1" pageId="0" pageNumber="195" rowspan="1">XVIII</td>
<td id="6A1FDBA8D3A86282FAA10A6CF74A959B" colspan="1" pageId="0" pageNumber="195" rowspan="1">3</td>
<td id="D731D89379BB279376D39B7F36C8FBC7" colspan="1" pageId="0" pageNumber="195" rowspan="1">12/13</td>
<td id="9F57CC472077DEF7222B323FCA592826" colspan="1" pageId="0" pageNumber="195" rowspan="1">XVI-XXIV</td>
<td id="688496371F4FD51A1CECE32B94545BF2" colspan="1" pageId="0" pageNumber="195" rowspan="1">XXVII-XXI</td>
<td id="03825C576D83A98C1B2550DDA4C65752" colspan="1" pageId="0" pageNumber="195" rowspan="1">present</td>
</tr>
<tr id="F0EAFA11364A6C7BFA87C8077DBC451B" pageId="0" pageNumber="195">
<td id="3C7797C2933FE6D233413C205774EDE4" colspan="1" pageId="0" pageNumber="195" rowspan="1">4</td>
<td id="3D5A7E2CEE28C7DDC21B9F7E8E37796A" colspan="1" pageId="0" pageNumber="195" rowspan="1">184</td>
<td id="435459CAC68C2D97F742F5C712F12379" colspan="1" pageId="0" pageNumber="195" rowspan="1">95</td>
<td id="99CD0A12FABABEFECA90ABED0ECFEFF7" colspan="1" pageId="0" pageNumber="195" rowspan="1">XVIII</td>
<td id="9323C8EA3F3C5A19F3393530E96197B7" colspan="1" pageId="0" pageNumber="195" rowspan="1">3</td>
<td id="7FEAEEF722C3297F0625A8C388179E2A" colspan="1" pageId="0" pageNumber="195" rowspan="1">12/13</td>
<td id="8ED8D984D817CF9E4B63201FED23BE25" colspan="1" pageId="0" pageNumber="195" rowspan="1">XVI-XXIII</td>
<td id="938F7F2302983803D07AE2265300A244" colspan="1" pageId="0" pageNumber="195" rowspan="1">XXVII-XXI</td>
<td id="9B99104EED4E89677A91FB86812D2BA5" colspan="1" pageId="0" pageNumber="195" rowspan="1">present</td>
</tr>
</table>
</paragraph>
</subSubSection>
<subSubSection id="0A2599A4E7A9A53F809FC1205DEF6009" pageId="0" pageNumber="195" type="etymology">
<paragraph id="AC6AFD86FE5D9C13C329DD4EB0147690" pageId="0" pageNumber="195">Etymology.</paragraph>
<paragraph id="D9CFC33FEA047FE7EC41F54B9B076095" pageId="0" pageNumber="195">The species was named after the region of the male pore that looks like an ear after being preserved.</paragraph>
</subSubSection>
<subSubSection id="3C1D29E7D86E085D1FBCA8289ECE9A7A" pageId="0" pageNumber="195" type="distribution">
<paragraph id="4D6EA5B0A8CC8E8048E8A500CC9D064A" pageId="0" pageNumber="195">Distribution.</paragraph>
<paragraph id="F29F6E644E220040C029DA6170281097" pageId="0" pageNumber="195">This species is known only from the type locality.</paragraph>
</subSubSection>
<subSubSection id="DA700E1F4E9F8E1C18474D12A4E965ED" pageId="0" pageNumber="195" type="remarks">
<paragraph id="7297EFA7C1D7FF84605DF8B92DEB0DC6" pageId="0" pageNumber="195">Remarks.</paragraph>
<paragraph id="557CC3E3C2F5CCEE0CA539016DE8D5DF" pageId="0" pageNumber="195">
<taxonomicName id="E2EFD08A2D73E1D01254BCBEAE76047D" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas auriculus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="auriculus">
<emphasis id="0C583653076158A605A29E3F8CBB9740" italics="true" pageId="0" pageNumber="195">Amynthas auriculus</emphasis>
</taxonomicName>
sp. nov. belongs to the
<taxonomicName id="42C630AA7DDDB38D098A328D94DC0F6A" baseAuthorityName="Rosa" baseAuthorityYear="1892" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas aelianus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="aelianus">
<emphasis id="D1DF8D40A4F75862C93BC4D7D069983A" italics="true" pageId="0" pageNumber="195">Amynthas aelianus</emphasis>
</taxonomicName>
species group. This new species is quite similar to
<taxonomicName id="A2BC175E89799FD8D1630831812E4D89" lsidName="A. osmastoni" pageId="0" pageNumber="195" rank="species" species="osmastoni">
<emphasis id="B70415DE094DC98FA8BBBB557E584860" italics="true" pageId="0" pageNumber="195">A. osmastoni</emphasis>
</taxonomicName>
from the South Andaman Islands and
<taxonomicName id="11464E8A810B4ADA19AB743CA1EE752A" lsidName="A. burchardi" pageId="0" pageNumber="195" rank="species" species="burchardi">
<emphasis id="4E2F0BBA480026A404C47D52CC831139" italics="true" pageId="0" pageNumber="195">A. burchardi</emphasis>
</taxonomicName>
from Sumatra in the body dimensions but differs in having genital markings in the male pore area and having large sessile glandular masses on the body wall in XVIII-XXI, while
<taxonomicName id="43DF306BCE677CF92B779C94719530D1" lsidName="A. osmastoni" pageId="0" pageNumber="195" rank="species" species="osmastoni">
<emphasis id="6085E24E8C8C8CDE408AD3084B03077D" italics="true" pageId="0" pageNumber="195">A. osmastoni</emphasis>
</taxonomicName>
has genital markings in the spermathecal pores region without glandular masses on the body wall, and
<taxonomicName id="8D5E67E6A35F3881AB22C9E70A22ACFE" lsidName="A. burchardi" pageId="0" pageNumber="195" rank="species" species="burchardi">
<emphasis id="1AF9D50E9DF8879966929080B85ACA94" italics="true" pageId="0" pageNumber="195">A. burchardi</emphasis>
</taxonomicName>
has a group of circular papillae in mid-ventral XVIII with no glandular masses on the body wall.
<taxonomicName id="095941DE45A84844DF453C19059D2EEC" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas auriculus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="auriculus">
<emphasis id="D067E8817F7C34B9B26955CAC2BB4D1A" italics="true" pageId="0" pageNumber="195">Amynthas auriculus</emphasis>
</taxonomicName>
sp. nov. can be distinguished from
<taxonomicName id="7C750F8497C8C73AFCB31FBC6BAA3454" lsidName="A. monsoonus" pageId="0" pageNumber="195" rank="species" species="monsoonus">
<emphasis id="D0B5DC4EAE3042067F5C502936590661" italics="true" pageId="0" pageNumber="195">A. monsoonus</emphasis>
</taxonomicName>
and
<taxonomicName id="69C719A65F002127F770247A2C099C2E" lsidName="A. huangi" pageId="0" pageNumber="195" rank="species" species="huangi">
<emphasis id="D4E48E4F7BAF43951C377C4B18A80CF1" italics="true" pageId="0" pageNumber="195">A. huangi</emphasis>
</taxonomicName>
from Taiwan in which the new species has a larger body size,
<taxonomicName id="DD2AA509C6330C3758AE348DA6285876" lsidName="A. monsoonus" pageId="0" pageNumber="195" rank="species" species="monsoonus">
<emphasis id="802F4EA405C9E32303FBE97430B29A0D" italics="true" pageId="0" pageNumber="195">A. monsoonus</emphasis>
</taxonomicName>
has a body size of 102 mm, a diameter of 3.6 mm, with 83 segments and genital markings in segments VII-IX, while the new species is absent.
<taxonomicName id="6A9D87B29DD2FBA899C7CD30BDA928EA" authorityName="James, Shih &amp; H-W.Chang" authorityYear="2005" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas huangi" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="huangi">
<emphasis id="7627A4C64B27687BFB997DB77C577631" italics="true" pageId="0" pageNumber="195">Amynthas huangi</emphasis>
</taxonomicName>
has a body size of 70 mm, a diameter of 3.5 mm, with 101 segments, and genital marking glands in the body wall in VI-IX, while the new species has no such character.
<taxonomicName id="E297CF3ED8C68B6584337810FBEEDED0" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas monsoonus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="monsoonus">
<emphasis id="85C50595DCF91AD894AEBB22129FCE9A" italics="true" pageId="0" pageNumber="195">Amynthas monsoonus</emphasis>
</taxonomicName>
and
<taxonomicName id="3B68F831C65964AA1687E5BD3E9FA9B3" lsidName="A. huangi" pageId="0" pageNumber="195" rank="species" species="huangi">
<emphasis id="698DFA6EAD9DFB45953905F6F2FEF3C1" italics="true" pageId="0" pageNumber="195">A. huangi</emphasis>
</taxonomicName>
have no genital markings in the male pores region, whereas the new species is present.
</paragraph>
<paragraph id="9CA3393C7C4A5802C45AEBD241A280E2" pageId="0" pageNumber="195">
<taxonomicName id="155196001BA3F996062561C594E3235D" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas auriculus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="auriculus">
<emphasis id="2F8F364989221BA96E6D291E733BED29" italics="true" pageId="0" pageNumber="195">Amynthas auriculus</emphasis>
</taxonomicName>
sp. nov. is easily distinguished from the other four earthworms of the
<taxonomicName id="00C7E24A60D6D1DFC20C478DAA64E0E3" baseAuthorityName="Rosa" baseAuthorityYear="1892" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas aelianus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="aelianus">
<emphasis id="11114DD14AED8629379C93E4DF9A1F96" italics="true" pageId="0" pageNumber="195">Amynthas aelianus</emphasis>
</taxonomicName>
species group reported from Thailand, namely
<taxonomicName id="7D9D7C59650D4A9D619B2B3939F6CFC2" lsidName="A. fucosus" pageId="0" pageNumber="195" rank="species" species="fucosus">
<emphasis id="51DC7DF1ADA60B261FD5B3F8777F31E9" italics="true" pageId="0" pageNumber="195">A. fucosus</emphasis>
</taxonomicName>
from Myanmar,
<taxonomicName id="35884E04E60380D46D466D5B2FC2AEE9" lsidName="A. siam" pageId="0" pageNumber="195" rank="species" species="siam">
<emphasis id="4117FC02F9426B79CFDCF1EFBF1A0062" italics="true" pageId="0" pageNumber="195">A. siam</emphasis>
</taxonomicName>
from Thailand, by its size and other physical traits.
<taxonomicName id="9DB3686231A79B5831BFECA718D6D534" baseAuthorityName="Gates" baseAuthorityYear="1933" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas fucosus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="fucosus">
<emphasis id="7D847FDF86A98375E971507EBA994C53" italics="true" pageId="0" pageNumber="195">Amynthas fucosus</emphasis>
</taxonomicName>
has a body size range of 120 mm with a diameter of 6 mm and 114 segments,
<taxonomicName id="6F58B958A14AF7A6E83A42A4E6F20A6B" lsidName="A. siam" pageId="0" pageNumber="195" rank="species" species="siam">
<emphasis id="9CD56135E7A4858C8A4CCCEA6AADBEE3" italics="true" pageId="0" pageNumber="195">A. siam</emphasis>
</taxonomicName>
has a body size range of 73 mm, diameter of 3 mm, while the new species has a body size that ranges from 184-267 mm with a diameter of 9-11 mm, and 95-151 segments.
<taxonomicName id="755CF22FF1C96FD0839F4163614E0941" baseAuthorityName="Gates" baseAuthorityYear="1933" class="Clitellata" family="Megascolecidae" genus="Amynthas" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Amynthas fucosus" order="Crassiclitellata" pageId="0" pageNumber="195" phylum="Annelida" rank="species" species="fucosus">
<emphasis id="8806C5D94BC02DEDD415E079561774CC" italics="true" pageId="0" pageNumber="195">Amynthas fucosus</emphasis>
</taxonomicName>
has two pairs of genital markings at 17/18, 18/19, and
<taxonomicName id="2EE81F25F8B13958A2CA322BC2652A5D" lsidName="A. siam" pageId="0" pageNumber="195" rank="species" species="siam">
<emphasis id="0CBC6118A23E6F2BF95FA2E7A0309323" italics="true" pageId="0" pageNumber="195">A. siam</emphasis>
</taxonomicName>
has single pair between the male pores, while the new species has three genital markings in the male pores. This new species differs from
<taxonomicName id="C7016FFE3670DD1227C1552E02BFB859" lsidName="A. arenulus" pageId="0" pageNumber="195" rank="species" species="arenulus">
<emphasis id="23994408F8F917DC4FA20DD42C766515" italics="true" pageId="0" pageNumber="195">A. arenulus</emphasis>
</taxonomicName>
in that
<taxonomicName id="E128B195C57CC80DF3EF223C50BE6CBF" lsidName="A. arenulus" pageId="0" pageNumber="195" rank="species" species="arenulus">
<emphasis id="6B993EDD9854F13CE634E13A4F1182AB" italics="true" pageId="0" pageNumber="195">A. arenulus</emphasis>
</taxonomicName>
has no genital markings. In contrast, the new species has them at segment XVIII, near the male pores area. The new species is relatively similar to
<taxonomicName id="BAECF872267CF56B495ECA7435629613" lsidName="A. longicaeca" pageId="0" pageNumber="195" rank="species" species="longicaeca">
<emphasis id="5A6D53355C1FD6CE2245A8DD8A63808D" italics="true" pageId="0" pageNumber="195">A. longicaeca</emphasis>
</taxonomicName>
in body size; however,
<taxonomicName id="228CFC586976314C50F47AF4E61A66D1" lsidName="A. longicaeca" pageId="0" pageNumber="195" rank="species" species="longicaeca">
<emphasis id="A1D2B773C98546FEDFD762BDD98CA8C2" italics="true" pageId="0" pageNumber="195">A. longicaeca</emphasis>
</taxonomicName>
differs in that it has an oval ampulla, a small ovate knob with nephridia on the diverticulum, and also has a crescent-shaped male pore region (Table
<tableCitation id="49EEEB0861F6ECC597BA468907FA3C73" captionStart="Table 5" captionStartId="T5" captionText="Table 5. Morphological characteristics of A. sakonnakhonensis sp. nov., A. auriculus sp. nov., A. bantanensis sp. nov., and other Amynthas aelianus species in Thailand, Burma, Sumatra. The comma is used to separate body length and width. Missing data are shown with a question mark (?). Data for A. arenulus Bantaowong &amp; Panha, 2014, A. longicaeca Bantaowong &amp; Panha, 2014, A. burchardi Michaelsen, 1899, A. osmastoni (Michaelsen, 1907), and A. fucosus (Gates, 1933) are from Bantaowong et al. (2014), and A. siam Blakemore, 2011 is from Blakemore (2011)." httpUri="http://table.plazi.org/id/F5E743884DC5845CD8D023EB55CDD7E5" pageId="0" pageNumber="195" tableUuid="F5E743884DC5845CD8D023EB55CDD7E5">5</tableCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>