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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1046.66141" ID-GBIF-Dataset="61536b4d-0ad0-4e9d-9452-33b96d4d9620" ID-PMC="PMC8238926" ID-Pensoft-Pub="1313-2970-1046-143" ID-Pensoft-UUID="2965C5DA4A655E06BA19B4EF3A3BD165" ID-PubMed="34239338" ID-ZooBank="EBF998BAF525437EA2FCEB59C8A2D908" ModsDocID="1313-2970-1046-143" checkinTime="1624307332676" checkinUser="pensoft" docAuthor="Ji, Su-Jung, Lee, Chi-Woo &amp; Min, Gi-Sik" docDate="2021" docId="F4E2BC4DB63859418A79BE12B5AB2367" docLanguage="en" docName="ZooKeys 1046: 143-155" docOrigin="ZooKeys 1046" docPubDate="2021-06-21" docSource="http://dx.doi.org/10.3897/zookeys.1046.66141" docTitle="Hangangbathynella mihoensis Ji &amp; Lee &amp; Min 2021, sp. nov." docType="treatment" docUuid="66F67C7D-E5E0-4C35-B7AA-2208792C239F" docUuidSource="ZooBank" docVersion="5" id="2965C5DA4A655E06BA19B4EF3A3BD165" lastPageNumber="143" masterDocId="2965C5DA4A655E06BA19B4EF3A3BD165" masterDocTitle="A new species of Hangangbathynella (Crustacea, Bathynellacea, Parabathynellidae) from South Korea" masterLastPageNumber="155" masterPageNumber="143" pageNumber="143" updateTime="1668150545645" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>A new species of Hangangbathynella (Crustacea, Bathynellacea, Parabathynellidae) from South Korea</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Ji, Su-Jung</mods:namePart>
<mods:affiliation>Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Lee, Chi-Woo</mods:namePart>
<mods:affiliation>Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Min, Gi-Sik</mods:namePart>
<mods:affiliation>Department of Biological Sciences, Inha University, Incheon 22212, Republic of Korea</mods:affiliation>
<mods:nameIdentifier type="email">mingisik@inha.ac.kr</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2021</mods:date>
<mods:detail type="pubDate">
<mods:number>2021-06-21</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>1046</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>143</mods:start>
<mods:end>155</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.1046.66141</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1046.66141</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-1046-143</mods:identifier>
<mods:identifier type="ZooBank">EBF998BAF525437EA2FCEB59C8A2D908</mods:identifier>
<mods:identifier type="Pensoft-UUID">2965C5DA4A655E06BA19B4EF3A3BD165</mods:identifier>
</mods:mods>
<subSection pageId="0" pageNumber="143" type="systematic account">
<treatment ID-GBIF-Taxon="183114788" LSID="urn:lsid:zoobank.org:act:66F67C7D-E5E0-4C35-B7AA-2208792C239F" httpUri="http://treatment.plazi.org/id/F4E2BC4DB63859418A79BE12B5AB2367" lastPageNumber="143" pageId="0" pageNumber="143">
<subSubSection pageId="0" pageNumber="143" type="nomenclature">
<paragraph pageId="0" pageNumber="143">
<taxonomicName LSID="http://zoobank.org/66F67C7D-E5E0-4C35-B7AA-2208792C239F" authority="Ji &amp; Lee &amp; Min, 2021" authorityName="Ji &amp; Lee &amp; Min" authorityYear="2021" class="Malacostraca" family="Parabathynellidae" genus="Hangangbathynella" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Hangangbathynella mihoensis" order="Bathynellacea" pageId="0" pageNumber="143" phylum="Arthropoda" rank="species" species="mihoensis" status="sp. nov.">Hangangbathynella mihoensis</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="143">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="143" type="type locality">
<paragraph pageId="0" pageNumber="143">Type locality.</paragraph>
<paragraph pageId="0" pageNumber="143">
Seokhwa-ri (
<geoCoordinate degrees="36" direction="north" minutes="38" orientation="latitude" precision="15" seconds="09" value="36.635834">36°38'09&quot;N</geoCoordinate>
,
<geoCoordinate degrees="127" direction="east" minutes="21" orientation="longitude" precision="15" seconds="27" value="127.3575">127°21'27&quot;E</geoCoordinate>
), Cheongju-si, Chungcheongbuk-do, Korea. On a sandbank of the Miho Stream, collected by Hee-Min Yang and Su-Jung Ji (31 May 2019).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="143" type="type material">
<paragraph pageId="0" pageNumber="143">Type material.</paragraph>
<paragraph pageId="0" pageNumber="143">
<emphasis bold="true" pageId="0" pageNumber="143">
<emphasis italics="true" pageId="0" pageNumber="143">Holotype</emphasis>
:
</emphasis>
male, dissected on 9 slides (NIBRIV0000879484).
<emphasis bold="true" italics="true" pageId="0" pageNumber="143">Allotype</emphasis>
: female, dissected on 12 slides (NIBRIV0000879485).
<emphasis bold="true" italics="true" pageId="0" pageNumber="143">Paratypes</emphasis>
: 9 females (NIBRIV0000879486, NIBRIV0000879487, NIBRIV0000881724, and NIBRIV0000881737-881742) and 6 males (NIBRIV0000881731-881736).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="143" type="diagnosis">
<paragraph pageId="0" pageNumber="143">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="143">Antennule seven-segmented without aesthetascs on the fifth segment, and with three simple setae on inner distal margin of the sixth segment; antenna seven-segmented with setal formula 0 + 0/0 + 0/1 + 0/1 + 1/0 + 0/0 + 2/4(1); labrum with 14 teeth; mandible palp two-segmented; maxilla four-segmented with setal formula 3-3(2)-10-6; exopod of thoracopods I-VII two-segmented; thoracopods III-VII each with an epipod; inner protuberance of male thoracopod VIII with three distal spinules; female thoracopod VIII with two teeth and two distal setae; uropod sympod with 8 to 10 spines of similar size; furcal ramus with 4 to 5 spines; anal operculum protruded.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="143" type="description">
<paragraph pageId="0" pageNumber="143">Description of adult male</paragraph>
<paragraph pageId="0" pageNumber="143">
<emphasis bold="true" pageId="0" pageNumber="143">
(Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Hangangbathynella mihoensis sp. nov., holotype male A habitus (lateral) B antennule (dorsal) C antenna (ventral) D labrum (ventral) E mandible (dorsal) F maxillule (dorsal) G maxilla (dorsal). Scale bars: 0.5 mm (A); 0.05 mm (B-G)." figureDoi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143">2</figureCitation>
-
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Hangangbathynella mihoensis sp. nov., holotype male A pleotelson and furcal rami (dorsal) B uropod (lateral). Scale bars: 0.05 mm." figureDoi="10.3897/zookeys.1046.66141.figure5" httpUri="https://binary.pensoft.net/fig/557933" pageId="0" pageNumber="143">5</figureCitation>
).
</emphasis>
Body length 1.13 mm (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Hangangbathynella mihoensis sp. nov., holotype male A habitus (lateral) B antennule (dorsal) C antenna (ventral) D labrum (ventral) E mandible (dorsal) F maxillule (dorsal) G maxilla (dorsal). Scale bars: 0.5 mm (A); 0.05 mm (B-G)." figureDoi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143">2A</figureCitation>
), approximately 10 times as long as wide. Head as long as anterior three thoracic segments combined.
</paragraph>
<caption doi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143" start="Figure 2" startId="F2">
<paragraph pageId="0" pageNumber="143">
<emphasis bold="true" pageId="0" pageNumber="143">Figure 2.</emphasis>
<taxonomicName authorityName="Ji &amp; Lee &amp; Min" authorityYear="2021" class="Malacostraca" family="Parabathynellidae" genus="Hangangbathynella" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Hangangbathynella mihoensis" order="Bathynellacea" pageId="0" pageNumber="143" phylum="Arthropoda" rank="species" species="mihoensis">
<emphasis italics="true" pageId="0" pageNumber="143">Hangangbathynella mihoensis</emphasis>
</taxonomicName>
sp. nov., holotype male
<emphasis bold="true" pageId="0" pageNumber="143">A</emphasis>
habitus (lateral)
<emphasis bold="true" pageId="0" pageNumber="143">B</emphasis>
antennule (dorsal)
<emphasis bold="true" pageId="0" pageNumber="143">C</emphasis>
antenna (ventral)
<emphasis bold="true" pageId="0" pageNumber="143">D</emphasis>
labrum (ventral)
<emphasis bold="true" pageId="0" pageNumber="143">E</emphasis>
mandible (dorsal)
<emphasis bold="true" pageId="0" pageNumber="143">F</emphasis>
maxillule (dorsal)
<emphasis bold="true" pageId="0" pageNumber="143">G</emphasis>
maxilla (dorsal). Scale bars: 0.5 mm (
<emphasis bold="true" pageId="0" pageNumber="143">A</emphasis>
); 0.05 mm (
<emphasis bold="true" pageId="0" pageNumber="143">B-G</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="143">
Antennule (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Hangangbathynella mihoensis sp. nov., holotype male A habitus (lateral) B antennule (dorsal) C antenna (ventral) D labrum (ventral) E mandible (dorsal) F maxillule (dorsal) G maxilla (dorsal). Scale bars: 0.5 mm (A); 0.05 mm (B-G)." figureDoi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143">2B</figureCitation>
) seven-segmented, first segment with one small seta on inner distal margin, two simple dorsal setae of different sizes, three plumose setae on outer margin; second segment with two simple setae on inner distal margin, one group of four plumose setae on outer margin; third segment with one simple dorsal and one ventral seta on inner distal margin, and with two simple setae of different sizes and one tiny seta on outer margin; inner flagellum of third segment with three simple setae; fourth segment with one stub seta and one plumose seta on dorsal margin, two stub setae and two plumose setae on outer distal apophysis, which is slightly protruded; fifth segment with one dorsal simple seta, distally with two setae on inner distal margin; sixth segment with three simple setae on inner distal margin, two aesthetascs and one simple seta dorsally, one aesthetasc on outer margin; seventh segment with three subterminal aesthetascs and four distal simple setae.
</paragraph>
<caption doi="10.3897/zookeys.1046.66141.figure3" httpUri="https://binary.pensoft.net/fig/557931" pageId="0" pageNumber="143" start="Figure 3" startId="F3">
<paragraph pageId="0" pageNumber="143">
<emphasis bold="true" pageId="0" pageNumber="143">Figure 3.</emphasis>
<taxonomicName authorityName="Ji &amp; Lee &amp; Min" authorityYear="2021" class="Malacostraca" family="Parabathynellidae" genus="Hangangbathynella" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Hangangbathynella mihoensis" order="Bathynellacea" pageId="0" pageNumber="143" phylum="Arthropoda" rank="species" species="mihoensis">
<emphasis italics="true" pageId="0" pageNumber="143">Hangangbathynella mihoensis</emphasis>
</taxonomicName>
sp. nov., holotype male
<emphasis bold="true" pageId="0" pageNumber="143">A-E</emphasis>
thoracopods I-V. Scale bar: 0.05 mm.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="143">
Antenna (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Hangangbathynella mihoensis sp. nov., holotype male A habitus (lateral) B antennule (dorsal) C antenna (ventral) D labrum (ventral) E mandible (dorsal) F maxillule (dorsal) G maxilla (dorsal). Scale bars: 0.5 mm (A); 0.05 mm (B-G)." figureDoi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143">2C</figureCitation>
) seven-segmented; as long as antennular segments 1-6 combined; setal formula 0 + 0/0 + 0/1 + 0/1 + 1/0 + 0/0 + 2/4.
</paragraph>
<paragraph pageId="0" pageNumber="143">
Labrum (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Hangangbathynella mihoensis sp. nov., holotype male A habitus (lateral) B antennule (dorsal) C antenna (ventral) D labrum (ventral) E mandible (dorsal) F maxillule (dorsal) G maxilla (dorsal). Scale bars: 0.5 mm (A); 0.05 mm (B-G)." figureDoi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143">2D</figureCitation>
) flat with eight median teeth of similar size, two central teeth slightly smaller than the rest, flanked by three teeth on each side; inner surface with two pairs of nipple-like lateral protrusions and with ctenidia and two tiny projections in middle region.
</paragraph>
<paragraph pageId="0" pageNumber="143">
Mandible (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Hangangbathynella mihoensis sp. nov., holotype male A habitus (lateral) B antennule (dorsal) C antenna (ventral) D labrum (ventral) E mandible (dorsal) F maxillule (dorsal) G maxilla (dorsal). Scale bars: 0.5 mm (A); 0.05 mm (B-G)." figureDoi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143">2E</figureCitation>
) with incisor process of four teeth; tooth of ventral edge triangular; spine row consisting of seven spines; palp two-segmented with one apical seta not exceeding incisor process in length.
</paragraph>
<paragraph pageId="0" pageNumber="143">
Maxillule (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Hangangbathynella mihoensis sp. nov., holotype male A habitus (lateral) B antennule (dorsal) C antenna (ventral) D labrum (ventral) E mandible (dorsal) F maxillule (dorsal) G maxilla (dorsal). Scale bars: 0.5 mm (A); 0.05 mm (B-G)." figureDoi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143">2F</figureCitation>
) two-segmented, proximal segment with four setae on distal margin; distal segment with two terminal dentated spines; five dentated spines on inner edge, and three simple setae on outer distal margin.
</paragraph>
<paragraph pageId="0" pageNumber="143">
Maxilla (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Hangangbathynella mihoensis sp. nov., holotype male A habitus (lateral) B antennule (dorsal) C antenna (ventral) D labrum (ventral) E mandible (dorsal) F maxillule (dorsal) G maxilla (dorsal). Scale bars: 0.5 mm (A); 0.05 mm (B-G)." figureDoi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143">2G</figureCitation>
) four-segmented, setal formula 3-3(2)-10-6.
</paragraph>
<paragraph pageId="0" pageNumber="143">
Thoracopods I-VII (Figs
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Hangangbathynella mihoensis sp. nov., holotype male A-E thoracopods I-V. Scale bar: 0.05 mm." figureDoi="10.3897/zookeys.1046.66141.figure3" httpUri="https://binary.pensoft.net/fig/557931" pageId="0" pageNumber="143">3A-E</figureCitation>
,
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Hangangbathynella mihoensis sp. nov., holotype male A thoracopod VI (frontal) B thoracopod VII (frontal) C thoracopod VIII (ventral). Scale bars: 0.05 mm." figureDoi="10.3897/zookeys.1046.66141.figure4" httpUri="https://binary.pensoft.net/fig/557932" pageId="0" pageNumber="143">4A, B</figureCitation>
) slightly increasing in size up to thoracopod IV, thoracopods IV-VII similar in size; thoracopods III-VII each bearing one epipod on protopod; basis of thoracopod I with two setae, that of thoracopods II-VII with one seta; exopod of thoracopods I-VII two-segmented; endopods of thoracopods I-VII four-segmented, setal formulae:
</paragraph>
<caption ID-Table-UUID="CA0A47A23175BBB3233198F55E8FCD23" httpUri="http://table.plazi.org/id/CA0A47A23175BBB3233198F55E8FCD23" pageId="0" pageNumber="143" start="" startId="T2">
<paragraph pageId="0" pageNumber="143">
<emphasis bold="true" pageId="0" pageNumber="143">.</emphasis>
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="143">
<table pageId="0" pageNumber="143">
<tr pageId="0" pageNumber="143">
<td colspan="1" pageId="0" pageNumber="143" rowspan="1">Thoracopod I</td>
<td colspan="1" pageId="0" pageNumber="143" rowspan="1">2 + 1/2 + 1/1 + 1/3(1)</td>
</tr>
<tr pageId="0" pageNumber="143">
<td colspan="1" pageId="0" pageNumber="143" rowspan="1">Thoracopods II</td>
<td colspan="1" pageId="0" pageNumber="143" rowspan="1">1 + 1/1 + 1/1 + 1/3(1)</td>
</tr>
<tr pageId="0" pageNumber="143">
<td colspan="1" pageId="0" pageNumber="143" rowspan="1">Thoracopods III, IV</td>
<td colspan="1" pageId="0" pageNumber="143" rowspan="1">0 + 1/1 + 1/0 + 1/3(1)</td>
</tr>
<tr pageId="0" pageNumber="143">
<td colspan="1" pageId="0" pageNumber="143" rowspan="1">Thoracopods V-VII</td>
<td colspan="1" pageId="0" pageNumber="143" rowspan="1">0 + 1/0 + 1/0 + 1/3(1)</td>
</tr>
</table>
</paragraph>
<paragraph pageId="0" pageNumber="143">
Thoracopod VIII (Figs
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Hangangbathynella mihoensis sp. nov., holotype male A thoracopod VI (frontal) B thoracopod VII (frontal) C thoracopod VIII (ventral). Scale bars: 0.05 mm." figureDoi="10.3897/zookeys.1046.66141.figure4" httpUri="https://binary.pensoft.net/fig/557932" pageId="0" pageNumber="143">4C</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Hangangbathynella mihoensis sp. nov. A-D, F paratype female (NIBRIV 0000881724) E allotype female G, H paratype male (NIBRIV 0000881731) A antenna (ventral) B labrum (ventral) C mandible (dorsal) D maxillule (dorsal) E thoracopod VIII (ventral) F pleotelson and furcal rami (dorsal) G thoracopod VIII (ventral) H thoracopod VIII (lateral). Scale bars: 0.05 mm (A-G); 0.02 mm (H)." figureDoi="10.3897/zookeys.1046.66141.figure6" httpUri="https://binary.pensoft.net/fig/557934" pageId="0" pageNumber="143">6G, H</figureCitation>
) nearly rectangular in lateral view; main axis tilting backwards; protopod massive with prominent penial region displaying distal opening encircled by frontal, median lobes and dentated inner lobe with four dentils; epipod large, gourd-shaped, distal part hardly covering penial region; basis as large as one half of protopod, without setae; exopod round, one half of basis with two distal protuberances; outer protuberance serrated, inner one with three distal spinules; endopod small, with two distal setae.
</paragraph>
<caption doi="10.3897/zookeys.1046.66141.figure4" httpUri="https://binary.pensoft.net/fig/557932" pageId="0" pageNumber="143" start="Figure 4" startId="F4">
<paragraph pageId="0" pageNumber="143">
<emphasis bold="true" pageId="0" pageNumber="143">Figure 4.</emphasis>
<taxonomicName authorityName="Ji &amp; Lee &amp; Min" authorityYear="2021" class="Malacostraca" family="Parabathynellidae" genus="Hangangbathynella" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Hangangbathynella mihoensis" order="Bathynellacea" pageId="0" pageNumber="143" phylum="Arthropoda" rank="species" species="mihoensis">
<emphasis italics="true" pageId="0" pageNumber="143">Hangangbathynella mihoensis</emphasis>
</taxonomicName>
sp. nov., holotype male
<emphasis bold="true" pageId="0" pageNumber="143">A</emphasis>
thoracopod VI (frontal)
<emphasis bold="true" pageId="0" pageNumber="143">B</emphasis>
thoracopod VII (frontal)
<emphasis bold="true" pageId="0" pageNumber="143">C</emphasis>
thoracopod VIII (ventral). Scale bars: 0.05 mm.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="143">
First pleopod absent (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Hangangbathynella mihoensis sp. nov., holotype male A habitus (lateral) B antennule (dorsal) C antenna (ventral) D labrum (ventral) E mandible (dorsal) F maxillule (dorsal) G maxilla (dorsal). Scale bars: 0.5 mm (A); 0.05 mm (B-G)." figureDoi="10.3897/zookeys.1046.66141.figure2" httpUri="https://binary.pensoft.net/fig/557930" pageId="0" pageNumber="143">2A</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="143">
Uropod (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Hangangbathynella mihoensis sp. nov., holotype male A pleotelson and furcal rami (dorsal) B uropod (lateral). Scale bars: 0.05 mm." figureDoi="10.3897/zookeys.1046.66141.figure5" httpUri="https://binary.pensoft.net/fig/557933" pageId="0" pageNumber="143">5A</figureCitation>
) with load-shaped sympod bearing eight spines of similar size on inner margin; endopod 28% as long as sympod length, with one large distal spur, two barbed setae and two plumose setae on dorsal surface; exopod longer than endopod, 50% as long as protopod, with one outer seta, two terminal setae and one inner medial seta; inner setae strong, longer and thicker than outer terminal seta.
</paragraph>
<paragraph pageId="0" pageNumber="143">
Pleotelson (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Hangangbathynella mihoensis sp. nov., holotype male A pleotelson and furcal rami (dorsal) B uropod (lateral). Scale bars: 0.05 mm." figureDoi="10.3897/zookeys.1046.66141.figure5" httpUri="https://binary.pensoft.net/fig/557933" pageId="0" pageNumber="143">5B</figureCitation>
) with one lateral seta on each side.
</paragraph>
<paragraph pageId="0" pageNumber="143">
Anal operculum (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Hangangbathynella mihoensis sp. nov., holotype male A pleotelson and furcal rami (dorsal) B uropod (lateral). Scale bars: 0.05 mm." figureDoi="10.3897/zookeys.1046.66141.figure5" httpUri="https://binary.pensoft.net/fig/557933" pageId="0" pageNumber="143">5B</figureCitation>
) protruded.
</paragraph>
<paragraph pageId="0" pageNumber="143">
Furcal rami (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Hangangbathynella mihoensis sp. nov., holotype male A pleotelson and furcal rami (dorsal) B uropod (lateral). Scale bars: 0.05 mm." figureDoi="10.3897/zookeys.1046.66141.figure5" httpUri="https://binary.pensoft.net/fig/557933" pageId="0" pageNumber="143">5B</figureCitation>
) slightly longer than wide, with four spines and two setae, longer one plumose and shorter one barbed.
</paragraph>
<caption doi="10.3897/zookeys.1046.66141.figure5" httpUri="https://binary.pensoft.net/fig/557933" pageId="0" pageNumber="143" start="Figure 5" startId="F5">
<paragraph pageId="0" pageNumber="143">
<emphasis bold="true" pageId="0" pageNumber="143">Figure 5.</emphasis>
<taxonomicName authorityName="Ji &amp; Lee &amp; Min" authorityYear="2021" class="Malacostraca" family="Parabathynellidae" genus="Hangangbathynella" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Hangangbathynella mihoensis" order="Bathynellacea" pageId="0" pageNumber="143" phylum="Arthropoda" rank="species" species="mihoensis">
<emphasis italics="true" pageId="0" pageNumber="143">Hangangbathynella mihoensis</emphasis>
</taxonomicName>
sp. nov., holotype male
<emphasis bold="true" pageId="0" pageNumber="143">A</emphasis>
pleotelson and furcal rami (dorsal)
<emphasis bold="true" pageId="0" pageNumber="143">B</emphasis>
uropod (lateral). Scale bars: 0.05 mm.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="143" type="description">
<paragraph pageId="0" pageNumber="143">Description of adult female.</paragraph>
<paragraph pageId="0" pageNumber="143">
The female differs from the male in thoracopod VIII. Thoracopod VIII (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Hangangbathynella mihoensis sp. nov. A-D, F paratype female (NIBRIV 0000881724) E allotype female G, H paratype male (NIBRIV 0000881731) A antenna (ventral) B labrum (ventral) C mandible (dorsal) D maxillule (dorsal) E thoracopod VIII (ventral) F pleotelson and furcal rami (dorsal) G thoracopod VIII (ventral) H thoracopod VIII (lateral). Scale bars: 0.05 mm (A-G); 0.02 mm (H)." figureDoi="10.3897/zookeys.1046.66141.figure6" httpUri="https://binary.pensoft.net/fig/557934" pageId="0" pageNumber="143">6E</figureCitation>
) as a gourd-shaped protuberance with two distal setae and two tiny spines.
</paragraph>
<caption doi="10.3897/zookeys.1046.66141.figure6" httpUri="https://binary.pensoft.net/fig/557934" pageId="0" pageNumber="143" start="Figure 6" startId="F6">
<paragraph pageId="0" pageNumber="143">
<emphasis bold="true" pageId="0" pageNumber="143">Figure 6.</emphasis>
<taxonomicName authorityName="Ji &amp; Lee &amp; Min" authorityYear="2021" class="Malacostraca" family="Parabathynellidae" genus="Hangangbathynella" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Hangangbathynella mihoensis" order="Bathynellacea" pageId="0" pageNumber="143" phylum="Arthropoda" rank="species" species="mihoensis">
<emphasis italics="true" pageId="0" pageNumber="143">Hangangbathynella mihoensis</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="143">A-D, F</emphasis>
paratype female (NIBRIV0000881724)
<emphasis bold="true" pageId="0" pageNumber="143">E</emphasis>
allotype female
<emphasis bold="true" pageId="0" pageNumber="143">G, H</emphasis>
paratype male (NIBRIV0000881731)
<emphasis bold="true" pageId="0" pageNumber="143">A</emphasis>
antenna (ventral)
<emphasis bold="true" pageId="0" pageNumber="143">B</emphasis>
labrum (ventral)
<emphasis bold="true" pageId="0" pageNumber="143">C</emphasis>
mandible (dorsal)
<emphasis bold="true" pageId="0" pageNumber="143">D</emphasis>
maxillule (dorsal)
<emphasis bold="true" pageId="0" pageNumber="143">E</emphasis>
thoracopod VIII (ventral)
<emphasis bold="true" pageId="0" pageNumber="143">F</emphasis>
pleotelson and furcal rami (dorsal)
<emphasis bold="true" pageId="0" pageNumber="143">G</emphasis>
thoracopod VIII (ventral)
<emphasis bold="true" pageId="0" pageNumber="143">H</emphasis>
thoracopod VIII (lateral). Scale bars: 0.05 mm (
<emphasis bold="true" pageId="0" pageNumber="143">A-G</emphasis>
); 0.02 mm (
<emphasis bold="true" pageId="0" pageNumber="143">H</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="143">
Antenna (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Hangangbathynella mihoensis sp. nov. A-D, F paratype female (NIBRIV 0000881724) E allotype female G, H paratype male (NIBRIV 0000881731) A antenna (ventral) B labrum (ventral) C mandible (dorsal) D maxillule (dorsal) E thoracopod VIII (ventral) F pleotelson and furcal rami (dorsal) G thoracopod VIII (ventral) H thoracopod VIII (lateral). Scale bars: 0.05 mm (A-G); 0.02 mm (H)." figureDoi="10.3897/zookeys.1046.66141.figure6" httpUri="https://binary.pensoft.net/fig/557934" pageId="0" pageNumber="143">6A</figureCitation>
) seven-segmented, two proximal segments without setae; third segment with one simple seta on inner edge; fourth segment with one simple seta on inner edge and one simple seta on outer distal margin; fifth segment without setae; sixth segment with one simple and one plumose seta on outer distal margin; distal segment with three simple setae and one plumose seta. Labrum (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Hangangbathynella mihoensis sp. nov. A-D, F paratype female (NIBRIV 0000881724) E allotype female G, H paratype male (NIBRIV 0000881731) A antenna (ventral) B labrum (ventral) C mandible (dorsal) D maxillule (dorsal) E thoracopod VIII (ventral) F pleotelson and furcal rami (dorsal) G thoracopod VIII (ventral) H thoracopod VIII (lateral). Scale bars: 0.05 mm (A-G); 0.02 mm (H)." figureDoi="10.3897/zookeys.1046.66141.figure6" httpUri="https://binary.pensoft.net/fig/557934" pageId="0" pageNumber="143">6B</figureCitation>
) with 14 teeth. Mandible (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Hangangbathynella mihoensis sp. nov. A-D, F paratype female (NIBRIV 0000881724) E allotype female G, H paratype male (NIBRIV 0000881731) A antenna (ventral) B labrum (ventral) C mandible (dorsal) D maxillule (dorsal) E thoracopod VIII (ventral) F pleotelson and furcal rami (dorsal) G thoracopod VIII (ventral) H thoracopod VIII (lateral). Scale bars: 0.05 mm (A-G); 0.02 mm (H)." figureDoi="10.3897/zookeys.1046.66141.figure6" httpUri="https://binary.pensoft.net/fig/557934" pageId="0" pageNumber="143">6C</figureCitation>
) with incisor process of four teeth, tooth of ventral edge triangular, spine row consisting of seven spines. Maxillule (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Hangangbathynella mihoensis sp. nov. A-D, F paratype female (NIBRIV 0000881724) E allotype female G, H paratype male (NIBRIV 0000881731) A antenna (ventral) B labrum (ventral) C mandible (dorsal) D maxillule (dorsal) E thoracopod VIII (ventral) F pleotelson and furcal rami (dorsal) G thoracopod VIII (ventral) H thoracopod VIII (lateral). Scale bars: 0.05 mm (A-G); 0.02 mm (H)." figureDoi="10.3897/zookeys.1046.66141.figure6" httpUri="https://binary.pensoft.net/fig/557934" pageId="0" pageNumber="143">6D</figureCitation>
) two-segmented.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="143" type="variation">
<paragraph pageId="0" pageNumber="143">Variation.</paragraph>
<paragraph pageId="0" pageNumber="143">
Body length 0.91-1.14 mm in female (six individuals, NIBRIV0000881737-881742), 1.04-1.13 mm in male (five individuals, NIBRIV0000881732-881736). Uropod protopod with eight to nine, rarely 10 spines. Furcal rami mostly with four spines but five on one side in NIBRIV0000881724 (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Hangangbathynella mihoensis sp. nov. A-D, F paratype female (NIBRIV 0000881724) E allotype female G, H paratype male (NIBRIV 0000881731) A antenna (ventral) B labrum (ventral) C mandible (dorsal) D maxillule (dorsal) E thoracopod VIII (ventral) F pleotelson and furcal rami (dorsal) G thoracopod VIII (ventral) H thoracopod VIII (lateral). Scale bars: 0.05 mm (A-G); 0.02 mm (H)." figureDoi="10.3897/zookeys.1046.66141.figure6" httpUri="https://binary.pensoft.net/fig/557934" pageId="0" pageNumber="143">6F</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="143" type="etymology">
<paragraph pageId="0" pageNumber="143">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="143">The species name is derived from the stream (Miho, a tributary of the Geumgang River) in which the species was collected.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="143" type="molecular analysis">
<paragraph pageId="0" pageNumber="143">Molecular analysis.</paragraph>
<paragraph pageId="0" pageNumber="143">
A total of 606 base pairs of COI sequences (GenBank accession numbers: MW429327, MW429328, and MW624440) were obtained from three individuals of
<taxonomicName authorityName="Ji &amp; Lee &amp; Min" authorityYear="2021" class="Malacostraca" family="Parabathynellidae" genus="Hangangbathynella" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Hangangbathynella mihoensis" order="Bathynellacea" pageId="0" pageNumber="143" phylum="Arthropoda" rank="species" species="mihoensis">
<emphasis italics="true" pageId="0" pageNumber="143">Hangangbathynella mihoensis</emphasis>
</taxonomicName>
sp. nov. (NIBRIV0000879486, NIBRIV0000879487, and NIBRIV0000881724). The intra-specific distance of the COI sequences ranged from 0.5% to 1.0%. Although the phylogenetic relationships of
<taxonomicName authorityName="Park &amp; Cho" authorityYear="2013" class="Malacostraca" family="Parabathynellidae" genus="Hangangbathynella" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Hangangbathynella" order="Bathynellacea" pageId="0" pageNumber="143" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="143">Hangangbathynella</emphasis>
</taxonomicName>
could not be confirmed owing to the lack of molecular data on Korean bathynellaceans, this result suggests that COI will be useful in distinguishing Korean bathynellacean species in the future.
</paragraph>
</subSubSection>
</treatment>
</subSection>
</document>
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