treatments-xml/data/7D/43/1D/7D431D7FFFD9985F3C22FC65565FF0E4.xml

<document id="A90AA95C9D6427037B84DC817A412B6B" ID-DOI="10.5281/zenodo.173351" ID-GBIF-Dataset="45dfc44f-f3cf-4044-9b4a-1953ee258c45" ID-ISSN="1175­5326" ID-Zenodo-Dep="173351" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1459773403159" checkinUser="plazi" docAuthor="Ivanenko, Viatcheslav N., Arbizu, Pedro Martínez &amp; Stecher, Jens" docDate="2006" docId="7D431D7FFFD9985F3C22FC65565FF0E4" docLanguage="en" docName="zt01277p021.pdf" docOrigin="Zootaxa 1277" docStyle="DocumentStyle:FA7E419B012A62B0FC3AC15A186C3DAF.3:Zootaxa.2001-2006.journal_article" docStyleId="FA7E419B012A62B0FC3AC15A186C3DAF" docStyleName="Zootaxa.2001-2006.journal_article" docStyleVersion="3" docTitle="Stygiopontius lomonosovi Ivanenko and Martinez Arbizu, new species" docType="treatment" docVersion="10" lastPageNumber="16" masterDocId="817A6507FFDC98503D2AFE595457F20A" masterDocTitle="Copepods of the family Dirivultidae (Siphonostomatoida) from deep­sea hydrothermal vent fields on the Mid­Atlantic Ridge at 14 ºN and 5 ºS" masterLastPageNumber="21" masterPageNumber="1" pageNumber="6" updateTime="1698217509975" updateUser="plazi">
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<mods:title id="A43198B11FAEE49F0A807FED440FE58A">Copepods of the family Dirivultidae (Siphonostomatoida) from deep­sea hydrothermal vent fields on the Mid­Atlantic Ridge at 14 ºN and 5 ºS</mods:title>
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<mods:namePart id="E1BEE23B55BD92456A2069062C642627">Ivanenko, Viatcheslav N.</mods:namePart>
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<mods:namePart id="B254DB96F218FA9BF72A7DFC19426EAB">Arbizu, Pedro Martínez</mods:namePart>
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<mods:namePart id="401F38DC0702CFC2362A59AE6ED27070">Stecher, Jens</mods:namePart>
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<heading id="AE1D1B05FFD998553C22FC65503CF05F" bold="true" box="[264,1131,571,598]" fontSize="11" level="1" pageId="5" pageNumber="6" reason="1">
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<taxonomicName id="32EAD7EAFFD998553C22FC65579AF05F" authority="Ivanenko and Martinez Arbizu" authorityName="Ivanenko and Martinez Arbizu" box="[264,973,571,598]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="5" pageNumber="6" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD998553C22FC65566BF05C" bold="true" box="[264,572,572,598]" italics="true" pageId="5" pageNumber="6">Stygiopontius lomonosovi</emphasis>
Ivanenko and Martínez Arbizu
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, 
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<figureCitation id="6DD1B0ECFFD998553C22FC065539F073" box="[264,366,607,633]" captionStart-0="FIGURE 3" captionStart-1="FIGURE 4" captionStart-2="FIGURE 5" captionStart-3="FIGURE 6" captionStart-4="FIGURE 7" captionStart-5="FIGURE 8" captionStart-6="FIGURE 9" captionStartId-0="7.[264,368,1713,1737]" captionStartId-1="8.[264,368,1800,1824]" captionStartId-2="9.[264,368,1728,1752]" captionStartId-3="10.[264,368,1691,1715]" captionStartId-4="11.[264,367,1718,1742]" captionStartId-5="12.[264,368,1683,1707]" captionStartId-6="13.[264,367,1539,1563]" captionTargetBox-0="[264,1319,323,1700]" captionTargetBox-1="[264,1312,328,1799]" captionTargetBox-2="[271,1310,316,1700]" captionTargetBox-3="[277,1319,333,1663]" captionTargetBox-4="[264,1322,328,1692]" captionTargetBox-5="[304,1302,325,1662]" captionTargetBox-6="[294,1283,326,1506]" captionTargetId-0="figure@7.[226,1360,301,1726]" captionTargetId-1="figure@8.[238,1356,298,1801]" captionTargetId-2="figure@9.[258,1361,308,1733]" captionTargetId-3="figure@10.[258,1333,309,1672]" captionTargetId-4="figure@11.[258,1346,324,1714]" captionTargetId-5="figure@12.[242,1345,299,1676]" captionTargetId-6="figure@13.[282,1298,300,1540]" captionTargetPageId-0="7" captionTargetPageId-1="8" captionTargetPageId-2="9" captionTargetPageId-3="10" captionTargetPageId-4="11" captionTargetPageId-5="12" captionTargetPageId-6="13" captionText-0="FIGURE 3. Stygiopontius lomonosovi n. sp., holotype Ψ: A, habitus, dorsal; B, urosome, dorsal; C, right genital field, seta of right leg 6; D, ventro­lateral outgrowth near posterior edge of genital double­somite; E, anal somite and caudal rami, dorsal; F, anal somite and left caudal ramus, lateral. Arrows indicate missing setae." captionText-1="FIGURE 4. Stygiopontius lomonosovi n. sp., holotype Ψ: A, antennule, arrows indicate 1 missing and 2 short seta; B, antenna, arrow indicates short seta; C, mandible; D, maxillule, arrow indicates short seta; E, outer lobe of maxillule, arrow indicates short seta." captionText-2="FIGURE 5. Stygiopontius lomonosovi n. sp., holotype Ψ: A, maxilla; B, maxilliped, posterior view; C, leg 1, anterior; D, leg 2, anterior." captionText-3="FIGURE 6. Stygiopontius lomonosovi n. sp., holotype Ψ: A, leg 3, posterior; B, distal exopodal segment of leg 3, posterior; C, leg 4, anterior, arrows indicate missing spines; D, leg 5, left, lost seta arrowed; E, leg 6, left." captionText-4="FIGURE 7. Stygiopontius lomonosovi n. sp., allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral." captionText-5="FIGURE 8. Stygiopontius lomonosovi n. sp., allotype ɗ: A, antennule; B, antennule, outgrowth of segment 3; C, modified seta of segment 5; D, 6 distalmost segments of antennule, modified setae arrowed; E, maxilliped, anterior; F, maxilliped, posterior." captionText-6="FIGURE 9. Stygiopontius lomonosovi n. sp., allotype ɗ: A, distal endopodal segment of leg 1, posterior; B, endopod, inner margin of coxa and basis, intercoxal sclerite of leg 2, anterior; C, distal exopodal segment of leg 3, anterior; D, leg 5, ventral." httpUri-0="https://zenodo.org/record/173354/files/figure.png" httpUri-1="https://zenodo.org/record/173355/files/figure.png" httpUri-2="https://zenodo.org/record/173356/files/figure.png" httpUri-3="https://zenodo.org/record/173357/files/figure.png" httpUri-4="https://zenodo.org/record/173358/files/figure.png" httpUri-5="https://zenodo.org/record/173359/files/figure.png" httpUri-6="https://zenodo.org/record/173360/files/figure.png" pageId="5" pageNumber="6">Figs 3–9</figureCitation>
</paragraph>
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<typeStatus id="2A5112CBFFD998553C22FCF6556BF0C2" box="[264,316,687,712]" pageId="5" pageNumber="6">Type</typeStatus>
material.
</emphasis>
Dissected 
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Ψ mounted on 3 slides (
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31035), dissected allotype ♂ mounted on 5 slides (
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31036), 2 
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ΨΨ mounted on 2 slides (
<collectionCode id="93FB34ACFFD998553959FC8E50F8F0FB" LSID="urn:lsid:biocol.org:col:34838" box="[1139,1199,727,753]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34838" name="Forschungsinstitut und Natur-Museum Senckenberg" pageId="5" pageNumber="6">SMF</collectionCode>
31037and 
<collectionCode id="93FB34ACFFD998553C22FCA65514F113" LSID="urn:lsid:biocol.org:col:34838" box="[264,323,767,793]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34838" name="Forschungsinstitut und Natur-Museum Senckenberg" pageId="5" pageNumber="6">SMF</collectionCode>
31038), and 1 
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♂ mounted on 1 slide (
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31039).
</paragraph>
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<emphasis id="C79E707BFFD998553C12FD7E558DF14A" box="[312,474,807,832]" italics="true" pageId="5" pageNumber="6">
<typeStatus id="2A5112CBFFD998553C12FD7E5538F14A" box="[312,367,807,832]" pageId="5" pageNumber="6">Type</typeStatus>
locality.
</emphasis>
Mid­Atlantic Ridge, Logachev­1 hydrothermal field, 
<collectionCode id="93FB34ACFFD998553950FD7E509CF14B" box="[1146,1227,807,833]" pageId="5" pageNumber="6">IRINA</collectionCode>
II site, station 35­ 
<collectionCode id="93FB34ACFFD998553CA0FD165590F163" box="[394,455,847,873]" httpUri="http://grbio.org/cool/apja-k356" name="Gregorio T. Velasquez Phycological Herbarium" pageId="5" pageNumber="6">GTV</collectionCode>
, 
<geoCoordinate id="90DECAAEFFD998553CF6FD16563EF163" box="[476,617,847,873]" direction="north" orientation="latitude" pageId="5" pageNumber="6" precision="9" value="14.753166">14°45.19’N</geoCoordinate>
, 
<geoCoordinate id="90DECAAEFFD998553F55FD165758F163" box="[639,783,847,873]" direction="west" orientation="longitude" pageId="5" pageNumber="6" precision="9" value="-44.979168">44°58.75’W</geoCoordinate>
, depth 
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. Periphery of the smoker complex covered by 
<taxonomicName id="32EAD7EAFFD998553CD7FD2E5708F19A" box="[509,863,887,912]" class="Bivalvia" family="Mytilidae" genus="Bathymodiolus" kingdom="Animalia" order="Mytiloida" pageId="5" pageNumber="6" phylum="Mollusca" rank="species" species="puteoserpentis">
<emphasis id="C79E707BFFD998553CD7FD2E5708F19A" box="[509,863,887,912]" italics="true" pageId="5" pageNumber="6">Bathymodiolus puteoserpentis</emphasis>
</taxonomicName>
(
<figureCitation id="6DD1B0ECFFD998553E45FD2E57E6F19B" box="[879,945,887,913]" captionStart="FIGURE 1" captionStartId="3.[264,368,1780,1804]" captionTargetBox="[283,1272,324,1748]" captionTargetId="figure@3.[264,1323,310,1771]" captionTargetPageId="3" captionText="FIGURE 1. Mid­Atlantic Ridge: A, Logachev hydrothermal field at 14 ° N, IRINA II site, musselbed of Bathymodiolus puteoserpentis, at the southwest from the smoker­complex; B, Turtle Pits hydrothermal site at 5 ° S, active chimney “ Tower ” with alvinocaridid shrimps of different size. (Photos courtesy by MARUM © 2005, University of Bremen.)" httpUri="https://zenodo.org/record/173352/files/figure.png" pageId="5" pageNumber="6">Fig. 1</figureCitation>
A). Collected 
<date id="81548AA9FFD998553973FD2E5148F19B" box="[1113,1311,887,913]" pageId="5" pageNumber="6" value="2004-01-25">25 January 2004</date>
.
</paragraph>
</subSubSection>
<subSubSection id="BDF0FFE2FFD998553C12FDC655CDF63B" pageId="5" pageNumber="6" type="etymology">
<paragraph id="F555AC69FFD998553C12FDC655CDF63B" blockId="5.[264,1323,686,1873]" pageId="5" pageNumber="6">
<emphasis id="C79E707BFFD998553C12FDC655ECF1B2" box="[312,443,927,952]" italics="true" pageId="5" pageNumber="6">Etymology.</emphasis>
The specific epithet is derived from the family name of the outstanding Russian scientist Michail V. Lomonosov (
<date id="81548AA9FFD998553FD8FD9E572EF1EB" box="[754,889,967,993]" pageId="5" pageNumber="6" value="1711" valueMax="1765">1711–1765</date>
), one of the founders of the Moscow State University established in 1755. It is the Latinized, masculine, genitive form of Lomonosov.
</paragraph>
</subSubSection>
<subSubSection id="BDF0FFE2FFD9985F3C12FA66565FF0E4" lastPageId="15" lastPageNumber="16" pageId="5" pageNumber="6" type="description">
<paragraph id="F555AC69FFD998553C12FA665062F77B" blockId="5.[264,1323,686,1873]" pageId="5" pageNumber="6">
<emphasis id="C79E707BFFD998553C12FA665659F652" box="[312,526,1087,1112]" italics="true" pageId="5" pageNumber="6">
Female 
<typeStatus id="2A5112CBFFD998553C8BFA66565DF652" box="[417,522,1087,1112]" pageId="5" pageNumber="6" type="holotype">holotype</typeStatus>
.
</emphasis>
Body (
<figureCitation id="6DD1B0ECFFD998553F50FA66569FF653" box="[634,712,1087,1113]" captionStart="FIGURE 3" captionStartId="7.[264,368,1713,1737]" captionTargetBox="[264,1319,323,1700]" captionTargetId="figure@7.[226,1360,301,1726]" captionTargetPageId="7" captionText="FIGURE 3. Stygiopontius lomonosovi n. sp., holotype Ψ: A, habitus, dorsal; B, urosome, dorsal; C, right genital field, seta of right leg 6; D, ventro­lateral outgrowth near posterior edge of genital double­somite; E, anal somite and caudal rami, dorsal; F, anal somite and left caudal ramus, lateral. Arrows indicate missing setae." httpUri="https://zenodo.org/record/173354/files/figure.png" pageId="5" pageNumber="6">Fig. 3</figureCitation>
A) with broad flattened prosome. Total length, excluding caudal setae, 
<quantity id="3212018CFFD998553F07FA3E56CBF68B" box="[557,668,1127,1153]" metricMagnitude="-4" metricUnit="m" metricValue="9.3" pageId="5" pageNumber="6" unit="mm" value="0.93">0.93 mm</quantity>
, greatest width 
<quantity id="3212018CFFD998553E49FA3E5783F68B" box="[867,980,1127,1153]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" pageId="5" pageNumber="6" unit="mm" value="0.5">0.50 mm</quantity>
. Prosome with ventrolateral folds as shown for male in 
<figureCitation id="6DD1B0ECFFD998553F7EFAD656CAF6A3" box="[596,669,1167,1193]" captionStart="FIGURE 7" captionStartId="11.[264,367,1718,1742]" captionTargetBox="[264,1322,328,1692]" captionTargetId="figure@11.[258,1346,324,1714]" captionTargetPageId="11" captionText="FIGURE 7. Stygiopontius lomonosovi n. sp., allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral." httpUri="https://zenodo.org/record/173358/files/figure.png" pageId="5" pageNumber="6">Fig. 7</figureCitation>
B. Urosome (
<figureCitation id="6DD1B0ECFFD998553E14FAD657D2F6A3" box="[830,901,1167,1193]" captionStart="FIGURE 3" captionStartId="7.[264,368,1713,1737]" captionTargetBox="[264,1319,323,1700]" captionTargetId="figure@7.[226,1360,301,1726]" captionTargetPageId="7" captionText="FIGURE 3. Stygiopontius lomonosovi n. sp., holotype Ψ: A, habitus, dorsal; B, urosome, dorsal; C, right genital field, seta of right leg 6; D, ventro­lateral outgrowth near posterior edge of genital double­somite; E, anal somite and caudal rami, dorsal; F, anal somite and left caudal ramus, lateral. Arrows indicate missing setae." httpUri="https://zenodo.org/record/173354/files/figure.png" pageId="5" pageNumber="6">Fig. 3</figureCitation>
B) 5­segmented, consisting of fifth pedigerous somite, genital double­somite and 3 postgenital somites. First somite of urosome trapezoidal in dorsal view. Lateral expansions in anterior part of genital doublesomite with dorsolateral genital fields bearing small seta (
<figureCitation id="6DD1B0ECFFD998553ECBFB5E507BF72B" box="[993,1068,1287,1313]" captionStart="FIGURE 3" captionStartId="7.[264,368,1713,1737]" captionTargetBox="[264,1319,323,1700]" captionTargetId="figure@7.[226,1360,301,1726]" captionTargetPageId="7" captionText="FIGURE 3. Stygiopontius lomonosovi n. sp., holotype Ψ: A, habitus, dorsal; B, urosome, dorsal; C, right genital field, seta of right leg 6; D, ventro­lateral outgrowth near posterior edge of genital double­somite; E, anal somite and caudal rami, dorsal; F, anal somite and left caudal ramus, lateral. Arrows indicate missing setae." httpUri="https://zenodo.org/record/173354/files/figure.png" pageId="5" pageNumber="6">Fig. 3</figureCitation>
B–C). Posteroventral margin of the genital double­somite with lateral spiniform processes (
<figureCitation id="6DD1B0ECFFD998553968FB7650D0F743" box="[1090,1159,1327,1353]" captionStart="FIGURE 3" captionStartId="7.[264,368,1713,1737]" captionTargetBox="[264,1319,323,1700]" captionTargetId="figure@7.[226,1360,301,1726]" captionTargetPageId="7" captionText="FIGURE 3. Stygiopontius lomonosovi n. sp., holotype Ψ: A, habitus, dorsal; B, urosome, dorsal; C, right genital field, seta of right leg 6; D, ventro­lateral outgrowth near posterior edge of genital double­somite; E, anal somite and caudal rami, dorsal; F, anal somite and left caudal ramus, lateral. Arrows indicate missing setae." httpUri="https://zenodo.org/record/173354/files/figure.png" pageId="5" pageNumber="6">Fig. 3</figureCitation>
B &amp; D). Anal opening near posterior margin of the last abdominal somite (
<figureCitation id="6DD1B0ECFFD998553EE6FB0E5046F77B" box="[972,1041,1367,1393]" captionStart="FIGURE 3" captionStartId="7.[264,368,1713,1737]" captionTargetBox="[264,1319,323,1700]" captionTargetId="figure@7.[226,1360,301,1726]" captionTargetPageId="7" captionText="FIGURE 3. Stygiopontius lomonosovi n. sp., holotype Ψ: A, habitus, dorsal; B, urosome, dorsal; C, right genital field, seta of right leg 6; D, ventro­lateral outgrowth near posterior edge of genital double­somite; E, anal somite and caudal rami, dorsal; F, anal somite and left caudal ramus, lateral. Arrows indicate missing setae." httpUri="https://zenodo.org/record/173354/files/figure.png" pageId="5" pageNumber="6">Fig. 3</figureCitation>
E).
</paragraph>
<paragraph id="F555AC69FFD998553C12FB2650F8F793" blockId="5.[264,1323,686,1873]" box="[312,1199,1407,1433]" pageId="5" pageNumber="6">
Rostrum weakly developed, oral cone short and robust as in male (
<figureCitation id="6DD1B0ECFFD99855396FFB2650DBF793" box="[1093,1164,1407,1433]" captionStart="FIGURE 7" captionStartId="11.[264,367,1718,1742]" captionTargetBox="[264,1322,328,1692]" captionTargetId="figure@11.[258,1346,324,1714]" captionTargetPageId="11" captionText="FIGURE 7. Stygiopontius lomonosovi n. sp., allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral." httpUri="https://zenodo.org/record/173358/files/figure.png" pageId="5" pageNumber="6">Fig. 7</figureCitation>
B).
</paragraph>
<paragraph id="F555AC69FFD998553C12FBFE509EF7E3" blockId="5.[264,1323,686,1873]" pageId="5" pageNumber="6">
Caudal ramus (
<figureCitation id="6DD1B0ECFFD998553CC4FBFE5660F7CB" box="[494,567,1447,1473]" captionStart="FIGURE 3" captionStartId="7.[264,368,1713,1737]" captionTargetBox="[264,1319,323,1700]" captionTargetId="figure@7.[226,1360,301,1726]" captionTargetPageId="7" captionText="FIGURE 3. Stygiopontius lomonosovi n. sp., holotype Ψ: A, habitus, dorsal; B, urosome, dorsal; C, right genital field, seta of right leg 6; D, ventro­lateral outgrowth near posterior edge of genital double­somite; E, anal somite and caudal rami, dorsal; F, anal somite and left caudal ramus, lateral. Arrows indicate missing setae." httpUri="https://zenodo.org/record/173354/files/figure.png" pageId="5" pageNumber="6">Fig. 3</figureCitation>
B, E &amp; F) short, with 6 setae, outermost terminal seta smooth, innermost terminal seta with setules on inner side (2 dorsal setae lost in 
<typeStatus id="2A5112CBFFD998553978FB9650EAF7E3" box="[1106,1213,1487,1513]" pageId="5" pageNumber="6" type="holotype">holotype</typeStatus>
).
</paragraph>
<paragraph id="F555AC69FFD998553C12FBAE5091F4D3" blockId="5.[264,1323,686,1873]" pageId="5" pageNumber="6">
Antennule (
<figureCitation id="6DD1B0ECFFD998553CEDFBAE5646F41B" box="[455,529,1527,1553]" captionStart="FIGURE 4" captionStartId="8.[264,368,1800,1824]" captionTargetBox="[264,1312,328,1799]" captionTargetId="figure@8.[238,1356,298,1801]" captionTargetPageId="8" captionText="FIGURE 4. Stygiopontius lomonosovi n. sp., holotype Ψ: A, antennule, arrows indicate 1 missing and 2 short seta; B, antenna, arrow indicates short seta; C, mandible; D, maxillule, arrow indicates short seta; E, outer lobe of maxillule, arrow indicates short seta." httpUri="https://zenodo.org/record/173355/files/figure.png" pageId="5" pageNumber="6">Fig. 4</figureCitation>
A) 12­segmented: first segment with 1 seta; second segment the longest, with 14 unequal setae; segment 3 subdivided, with 10 unequal setae, 2 setae very small; segment 4 short with 2 setae; segment 5 double, with 4 (2 pairs) of setae; segments 6–9 each with 2 setae, 1 seta near the middle, and another seta near the distal edge; segment 10 with 2 setae and 1 aesthetasc near the distal edge; segment 11 bearing six setae; segment 12 with 8 setae. All setae, except distal seta of segment 5, smooth.
</paragraph>
<paragraph id="F555AC69FFD998563C12F8BE5784F354" blockId="5.[264,1323,686,1873]" lastBlockId="6.[264,1325,284,1270]" lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6">
Antenna (
<figureCitation id="6DD1B0ECFFD998553C87F8BE55A1F50B" box="[429,502,1767,1793]" captionStart="FIGURE 4" captionStartId="8.[264,368,1800,1824]" captionTargetBox="[264,1312,328,1799]" captionTargetId="figure@8.[238,1356,298,1801]" captionTargetPageId="8" captionText="FIGURE 4. Stygiopontius lomonosovi n. sp., holotype Ψ: A, antennule, arrows indicate 1 missing and 2 short seta; B, antenna, arrow indicates short seta; C, mandible; D, maxillule, arrow indicates short seta; E, outer lobe of maxillule, arrow indicates short seta." httpUri="https://zenodo.org/record/173355/files/figure.png" pageId="5" pageNumber="6">Fig. 4</figureCitation>
B): small coxa without ornamentation, elongate basis with setules on outer and inner margins. Exopod small, 1­segmented, with 3 smooth setae. Endopod 2­ segmented; segment 1 elongate and unarmed, with setules on outer and inner margins; segment 2 short, ornamented with setules, armed with 5 setae: 4 terminal setae (3 elongate of different lengths and 1 short) and 1 short subterminal seta.
</paragraph>
<paragraph id="F555AC69FFDA98563C12FF3557DFF3A4" blockId="6.[264,1325,284,1270]" pageId="6" pageNumber="7">
Mandible (
<figureCitation id="6DD1B0ECFFDA98563C96FF35565EF38C" box="[444,521,364,390]" captionStart="FIGURE 4" captionStartId="8.[264,368,1800,1824]" captionTargetBox="[264,1312,328,1799]" captionTargetId="figure@8.[238,1356,298,1801]" captionTargetPageId="8" captionText="FIGURE 4. Stygiopontius lomonosovi n. sp., holotype Ψ: A, antennule, arrows indicate 1 missing and 2 short seta; B, antenna, arrow indicates short seta; C, mandible; D, maxillule, arrow indicates short seta; E, outer lobe of maxillule, arrow indicates short seta." httpUri="https://zenodo.org/record/173355/files/figure.png" pageId="6" pageNumber="7">Fig. 4</figureCitation>
C): gnathobase stylet­like and flattened; terminal teeth of unequal size, proximoventral margin with a row of small teeth.
</paragraph>
<paragraph id="F555AC69FFDA98563C12FFE550CEF02C" blockId="6.[264,1325,284,1270]" pageId="6" pageNumber="7">
Maxillule (
<figureCitation id="6DD1B0ECFFDA98563C90FFE55657F3DC" box="[442,512,444,470]" captionStart="FIGURE 4" captionStartId="8.[264,368,1800,1824]" captionTargetBox="[264,1312,328,1799]" captionTargetId="figure@8.[238,1356,298,1801]" captionTargetPageId="8" captionText="FIGURE 4. Stygiopontius lomonosovi n. sp., holotype Ψ: A, antennule, arrows indicate 1 missing and 2 short seta; B, antenna, arrow indicates short seta; C, mandible; D, maxillule, arrow indicates short seta; E, outer lobe of maxillule, arrow indicates short seta." httpUri="https://zenodo.org/record/173355/files/figure.png" pageId="6" pageNumber="7">Fig. 4</figureCitation>
D–E): inner lobe with a row of slender setules on inner margin and 5 terminal setae, 1 short and 4 long; outer lobe articulate, with 3 long, terminal and 1 short, subterminal setae. All long setae ornamented with setules of different lengths.
</paragraph>
<paragraph id="F555AC69FFDA98563C12FC6D56FFF094" blockId="6.[264,1325,284,1270]" pageId="6" pageNumber="7">
Maxilla (
<figureCitation id="6DD1B0ECFFDA98563C8FFC6D55BAF044" box="[421,493,564,590]" captionStart="FIGURE 5" captionStartId="9.[264,368,1728,1752]" captionTargetBox="[271,1310,316,1700]" captionTargetId="figure@9.[258,1361,308,1733]" captionTargetPageId="9" captionText="FIGURE 5. Stygiopontius lomonosovi n. sp., holotype Ψ: A, maxilla; B, maxilliped, posterior view; C, leg 1, anterior; D, leg 2, anterior." httpUri="https://zenodo.org/record/173356/files/figure.png" pageId="6" pageNumber="7">Fig. 5</figureCitation>
A) 2­segmented: segment 1 wide; segment 2 elongate, with flattened spoon­like tip ornamented with setules. Long inner seta near juncture of segments; its distal part ornamented with setules.
</paragraph>
<paragraph id="F555AC69FFDA98563C12FCF556F7F16C" blockId="6.[264,1325,284,1270]" pageId="6" pageNumber="7">
Maxilliped (
<figureCitation id="6DD1B0ECFFDA98563CE1FCF55642F0CC" box="[459,533,684,710]" captionStart="FIGURE 5" captionStartId="9.[264,368,1728,1752]" captionTargetBox="[271,1310,316,1700]" captionTargetId="figure@9.[258,1361,308,1733]" captionTargetPageId="9" captionText="FIGURE 5. Stygiopontius lomonosovi n. sp., holotype Ψ: A, maxilla; B, maxilliped, posterior view; C, leg 1, anterior; D, leg 2, anterior." httpUri="https://zenodo.org/record/173356/files/figure.png" pageId="6" pageNumber="7">Fig. 5</figureCitation>
B): syncoxa with 1 long, inner, bipinnate seta; basis with shorter, inner seta along inner margin of the segment, ornamented with spinules. Endopod 3­ segmented: segment 1 with 2 short, posterior setae; segment 2 with 1 long, posterior seta ornamented with spinules; segment 3 bearing 2 terminal setae with setules on inner margin, 1 seta very long and thick.
</paragraph>
<paragraph id="F555AC69FFDA98563C12FD2D55CBF6FC" blockId="6.[264,1325,284,1270]" pageId="6" pageNumber="7">
Swimming legs 1–4 (
<figureCitation id="6DD1B0ECFFDA98563F1BFD2D562DF184" box="[561,634,884,910]" captionStart="FIGURE 5" captionStartId="9.[264,368,1728,1752]" captionTargetBox="[271,1310,316,1700]" captionTargetId="figure@9.[258,1361,308,1733]" captionTargetPageId="9" captionText="FIGURE 5. Stygiopontius lomonosovi n. sp., holotype Ψ: A, maxilla; B, maxilliped, posterior view; C, leg 1, anterior; D, leg 2, anterior." httpUri="https://zenodo.org/record/173356/files/figure.png" pageId="6" pageNumber="7">Figs 5</figureCitation>
C–D, 6A–C) with 3­segmented rami, except for leg 4, with 2­segmented endopod. Formula for the armature of legs 
<quantity id="3212018CFFDA98563E8DFDC557A4F1BC" box="[935,1011,924,950]" metricMagnitude="-2" metricUnit="m" metricValue="6.35" metricValueMax="10.16" metricValueMin="2.54" pageId="6" pageNumber="7" unit="in" value="2.5" valueMax="4.0" valueMin="1.0">1–4 in</quantity>
<tableCitation id="B86899D2FFDA98563ED1FDC55003F1BC" box="[1019,1108,924,950]" captionStart="TABLE 1" captionStartId="6.[264,352,1323,1347]" captionTargetBox="[272,1214,1414,1608]" captionTargetPageId="6" captionText="TABLE 1. Stygiopontius lomonosovi n. sp., holotype Ψ, armature formulae of the swimming legs 1 – 4. Roman numerals indicate spines, Arabic numerals, setae." httpUri="http://table.plazi.org/id/A195FCE1FFDA98563C22FB7257F6F76F" pageId="6" pageNumber="7" tableUuid="A195FCE1FFDA98563C22FB7257F6F76F">Table 1</tableCitation>
. Distal endopodal segment of legs 1–3 and distal exopodal segment of leg 3 ornamented with groups of slender posterior setules as shown in the figures. Leg 1: inner seta of basis slender and smooth; outer spine of exopodal segment 2 small and curved proximally; 1 outer spine of first exopodal segment and 3 outer spines of third ornamented with long subterminal setule; this setule absent on spines of other swimming legs. Leg 4: inner seta of exopodal segment 1 smooth in proximal part and ornamented with small setules in distal part (
<figureCitation id="6DD1B0ECFFDA985639D1FAD5554FF6C4" captionStart="FIGURE 6" captionStartId="10.[264,368,1691,1715]" captionTargetBox="[277,1319,333,1663]" captionTargetId="figure@10.[258,1333,309,1672]" captionTargetPageId="10" captionText="FIGURE 6. Stygiopontius lomonosovi n. sp., holotype Ψ: A, leg 3, posterior; B, distal exopodal segment of leg 3, posterior; C, leg 4, anterior, arrows indicate missing spines; D, leg 5, left, lost seta arrowed; E, leg 6, left." httpUri="https://zenodo.org/record/173357/files/figure.png" pageId="6" pageNumber="7">Fig. 6</figureCitation>
C). Intercoxal sclerites of legs 3–4 expanded. Distal exopodal segment of leg 4 with 2 outer spines.
</paragraph>
<caption id="A195FCE1FFDA98563C22FB7257F6F76F" ID-Table-UUID="A195FCE1FFDA98563C22FB7257F6F76F" httpUri="http://table.plazi.org/id/A195FCE1FFDA98563C22FB7257F6F76F" pageId="6" pageNumber="7" targetBox="[272,1214,1414,1608]" targetIsTable="true" targetPageId="6">
<paragraph id="F555AC69FFDA98563C22FB7257F6F76F" blockId="6.[264,1323,1323,1381]" pageId="6" pageNumber="7">
<emphasis id="C79E707BFFDA98563C22FB72552BF749" bold="true" box="[264,380,1323,1347]" pageId="6" pageNumber="7">TABLE 1.</emphasis>
<taxonomicName id="32EAD7EAFFDA98563CAEFB7556CFF749" box="[388,664,1324,1347]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFDA98563CAEFB7556CFF749" box="[388,664,1324,1347]" italics="true" pageId="6" pageNumber="7">Stygiopontius lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFDA98563F8AFB72568AF749" bold="true" box="[672,733,1323,1347]" pageId="6" pageNumber="7">
<taxonomicNameLabel id="DCADCD00FFDA98563F8AFB72568AF749" box="[672,733,1323,1347]" pageId="6" pageNumber="7" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, holotype Ψ, armature formulae of the swimming legs 1–4. Roman numerals indicate spines, Arabic numerals, setae.
</paragraph>
</caption>
<paragraph id="F555AC69FFDA98563CECFBDF5024F442" pageId="6" pageNumber="7">
<table id="87EA5EC9FFDA67AF3C3AFBDF50E9F442" box="[272,1214,1414,1608]" gridcols="5" gridrows="5" pageId="6" pageNumber="7">
<tr id="4BDAAE2BFFDA67AF3C3AFBDF50E9F797" box="[272,1214,1414,1437]" gridrow="0" pageId="6" pageNumber="7" rowspan-0="1">
<th id="080BC757FFDA67AF3CECFBDF55A9F797" box="[454,510,1414,1437]" gridcol="1" gridrow="0" pageId="6" pageNumber="7">Coxa</th>
<th id="080BC757FFDA67AF3F59FBDF56FAF797" box="[627,685,1414,1437]" gridcol="2" gridrow="0" pageId="6" pageNumber="7">Basis</th>
<th id="080BC757FFDA67AF3E36FBDF57E3F797" box="[796,948,1414,1437]" gridcol="3" gridrow="0" pageId="6" pageNumber="7">Exopod</th>
<th id="080BC757FFDA67AF390FFBDF50E9F797" box="[1061,1214,1414,1437]" gridcol="4" gridrow="0" pageId="6" pageNumber="7">Endopod</th>
</tr>
<tr id="4BDAAE2BFFDA67AF3C3AFBE850E9F7C2" box="[272,1214,1457,1480]" gridrow="1" pageId="6" pageNumber="7">
<th id="080BC757FFDA67AF3C3AFBE8551AF7C2" box="[272,333,1457,1480]" gridcol="0" gridrow="1" pageId="6" pageNumber="7">Leg 1</th>
<td id="080BC757FFDA67AF3CECFBE855A9F7C2" box="[454,510,1457,1480]" gridcol="1" gridrow="1" pageId="6" pageNumber="7">0­1</td>
<td id="080BC757FFDA67AF3F59FBE856FAF7C2" box="[627,685,1457,1480]" gridcol="2" gridrow="1" pageId="6" pageNumber="7">1­1</td>
<td id="080BC757FFDA67AF3E36FBE857E3F7C2" box="[796,948,1457,1480]" gridcol="3" gridrow="1" pageId="6" pageNumber="7">I­1; I­1; III,4</td>
<td id="080BC757FFDA67AF390FFBE850E9F7C2" box="[1061,1214,1457,1480]" gridcol="4" gridrow="1" pageId="6" pageNumber="7">0­1; 0­2; 1,2,3</td>
</tr>
<tr id="4BDAAE2BFFDA67AF3C3AFB8550E9F7F9" box="[272,1214,1500,1523]" gridrow="2" pageId="6" pageNumber="7">
<th id="080BC757FFDA67AF3C3AFB85551AF7F9" box="[272,333,1500,1523]" gridcol="0" gridrow="2" pageId="6" pageNumber="7">Leg 2</th>
<td id="080BC757FFDA67AF3CECFB8555A9F7F9" box="[454,510,1500,1523]" gridcol="1" gridrow="2" pageId="6" pageNumber="7">0­1</td>
<td id="080BC757FFDA67AF3F59FB8556FAF7F9" box="[627,685,1500,1523]" gridcol="2" gridrow="2" pageId="6" pageNumber="7">1­0</td>
<td id="080BC757FFDA67AF3E36FB8557E3F7F9" box="[796,948,1500,1523]" gridcol="3" gridrow="2" pageId="6" pageNumber="7">I­1; I­1; III,I,4</td>
<td id="080BC757FFDA67AF390FFB8550E9F7F9" box="[1061,1214,1500,1523]" gridcol="4" gridrow="2" pageId="6" pageNumber="7">0­1; 0­2; 1,2,3</td>
</tr>
<tr id="4BDAAE2BFFDA67AF3C3AF85F50E9F417" box="[272,1214,1542,1565]" gridrow="3" pageId="6" pageNumber="7">
<th id="080BC757FFDA67AF3C3AF85F551AF417" box="[272,333,1542,1565]" gridcol="0" gridrow="3" pageId="6" pageNumber="7">Leg 3</th>
<td id="080BC757FFDA67AF3CECF85F55A9F417" box="[454,510,1542,1565]" gridcol="1" gridrow="3" pageId="6" pageNumber="7">0­0</td>
<td id="080BC757FFDA67AF3F59F85F56FAF417" box="[627,685,1542,1565]" gridcol="2" gridrow="3" pageId="6" pageNumber="7">1­0</td>
<td id="080BC757FFDA67AF3E36F85F57E3F417" box="[796,948,1542,1565]" gridcol="3" gridrow="3" pageId="6" pageNumber="7">I­1; I­1; III,I,5</td>
<td id="080BC757FFDA67AF390FF85F50E9F417" box="[1061,1214,1542,1565]" gridcol="4" gridrow="3" pageId="6" pageNumber="7">0­1; 0­2; 1,I,3</td>
</tr>
<tr id="4BDAAE2BFFDA67AF3C3AF86850E9F442" box="[272,1214,1585,1608]" gridrow="4" pageId="6" pageNumber="7">
<th id="080BC757FFDA67AF3C3AF868551AF442" box="[272,333,1585,1608]" gridcol="0" gridrow="4" pageId="6" pageNumber="7">Leg 4</th>
<td id="080BC757FFDA67AF3CECF86855A9F442" box="[454,510,1585,1608]" gridcol="1" gridrow="4" pageId="6" pageNumber="7">0­0</td>
<td id="080BC757FFDA67AF3F59F86856FAF442" box="[627,685,1585,1608]" gridcol="2" gridrow="4" pageId="6" pageNumber="7">1­0</td>
<td id="080BC757FFDA67AF3E36F86857E3F442" box="[796,948,1585,1608]" gridcol="3" gridrow="4" pageId="6" pageNumber="7">I­1; I­1; II,I,4</td>
<td id="080BC757FFDA67AF390FF86850E9F442" box="[1061,1214,1585,1608]" gridcol="4" gridrow="4" pageId="6" pageNumber="7">0­0; I,1</td>
</tr>
</table>
</paragraph>
<paragraph id="F555AC69FFDA98563C12F8C057E2F4D1" blockId="6.[264,1322,1689,1835]" pageId="6" pageNumber="7">
Leg 5 (
<figureCitation id="6DD1B0ECFFDA98563CA1F8C05586F4B9" box="[395,465,1689,1715]" captionStart="FIGURE 6" captionStartId="10.[264,368,1691,1715]" captionTargetBox="[277,1319,333,1663]" captionTargetId="figure@10.[258,1333,309,1672]" captionTargetPageId="10" captionText="FIGURE 6. Stygiopontius lomonosovi n. sp., holotype Ψ: A, leg 3, posterior; B, distal exopodal segment of leg 3, posterior; C, leg 4, anterior, arrows indicate missing spines; D, leg 5, left, lost seta arrowed; E, leg 6, left." httpUri="https://zenodo.org/record/173357/files/figure.png" pageId="6" pageNumber="7">Fig. 6</figureCitation>
D) indistinctly 2­segmented; segment 1 with 1 long outer seta; segment 2 armed with 3 setae of different lengths (lost seta arrowed).
</paragraph>
<paragraph id="F555AC69FFDA98563C12F8B056B3F521" blockId="6.[264,1322,1689,1835]" pageId="6" pageNumber="7">
Leg 6 (
<figureCitation id="6DD1B0ECFFDA98563CA1F8B05587F509" box="[395,464,1769,1795]" captionStart="FIGURE 3" captionStartId="7.[264,368,1713,1737]" captionTargetBox="[264,1319,323,1700]" captionTargetId="figure@7.[226,1360,301,1726]" captionTargetPageId="7" captionText="FIGURE 3. Stygiopontius lomonosovi n. sp., holotype Ψ: A, habitus, dorsal; B, urosome, dorsal; C, right genital field, seta of right leg 6; D, ventro­lateral outgrowth near posterior edge of genital double­somite; E, anal somite and caudal rami, dorsal; F, anal somite and left caudal ramus, lateral. Arrows indicate missing setae." httpUri="https://zenodo.org/record/173354/files/figure.png" pageId="6" pageNumber="7">Fig. 3</figureCitation>
C) represented by a flap covering gonopores and bearing 1 small seta. Color of living specimens unknown.
</paragraph>
<caption id="A195FCE1FFDB98573C22F8E85607F53A" httpUri="https://zenodo.org/record/173354/files/figure.png" pageId="7" pageNumber="8" targetBox="[264,1319,323,1700]" targetPageId="7">
<paragraph id="F555AC69FFDB98573C22F8E85607F53A" blockId="7.[264,1323,1713,1840]" pageId="7" pageNumber="8">
<emphasis id="C79E707BFFDB98573C22F8E855DDF4C3" bold="true" box="[264,394,1713,1737]" pageId="7" pageNumber="8">FIGURE 3.</emphasis>
<taxonomicName id="32EAD7EAFFDB98573CBAF8EB56F5F4C3" box="[400,674,1714,1737]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="7" pageNumber="8" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFDB98573CBAF8EB56F5F4C3" box="[400,674,1714,1737]" italics="true" pageId="7" pageNumber="8">Stygiopontius lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFDB98573F82F8E856B4F4C3" bold="true" box="[680,739,1713,1737]" pageId="7" pageNumber="8">
<taxonomicNameLabel id="DCADCD00FFDB98573F82F8E856B4F4C3" box="[680,739,1713,1737]" pageId="7" pageNumber="8" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, holotype Ψ: A, habitus, dorsal; B, urosome, dorsal; C, right genital field, seta of right leg 6; D, ventro­lateral outgrowth near posterior edge of genital double­somite; E, anal somite and caudal rami, dorsal; F, anal somite and left caudal ramus, lateral. Arrows indicate missing setae.
</paragraph>
</caption>
<caption id="A195FCE1FFD498583C22F95157E6F56F" httpUri="https://zenodo.org/record/173355/files/figure.png" pageId="8" pageNumber="9" targetBox="[264,1312,328,1799]" targetPageId="8">
<paragraph id="F555AC69FFD498583C22F95157E6F56F" blockId="8.[264,1323,1800,1893]" pageId="8" pageNumber="9">
<emphasis id="C79E707BFFD498583C22F95155DCF52A" bold="true" box="[264,395,1800,1824]" pageId="8" pageNumber="9">FIGURE 4.</emphasis>
<taxonomicName id="32EAD7EAFFD498583CB9F95056F1F52A" box="[403,678,1801,1824]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD498583CB9F95056F1F52A" box="[403,678,1801,1824]" italics="true" pageId="8" pageNumber="9">Stygiopontius lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFD498583F87F95156BDF52A" bold="true" box="[685,746,1800,1824]" pageId="8" pageNumber="9">
<taxonomicNameLabel id="DCADCD00FFD498583F87F95156BDF52A" box="[685,746,1800,1824]" pageId="8" pageNumber="9" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, holotype Ψ: A, antennule, arrows indicate 1 missing and 2 short seta; B, antenna, arrow indicates short seta; C, mandible; D, maxillule, arrow indicates short seta; E, outer lobe of maxillule, arrow indicates short seta.
</paragraph>
</caption>
<caption id="A195FCE1FFD598593C22F8995690F4F0" httpUri="https://zenodo.org/record/173356/files/figure.png" pageId="9" pageNumber="10" targetBox="[271,1310,316,1700]" targetPageId="9">
<paragraph id="F555AC69FFD598593C22F8995690F4F0" blockId="9.[264,1323,1728,1786]" pageId="9" pageNumber="10">
<emphasis id="C79E707BFFD598593C22F89955D9F4D2" bold="true" box="[264,398,1728,1752]" pageId="9" pageNumber="10">FIGURE 5.</emphasis>
<taxonomicName id="32EAD7EAFFD598593CB1F89956E6F4DD" box="[411,689,1728,1751]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="9" pageNumber="10" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD598593CB1F89956E6F4DD" box="[411,689,1728,1751]" italics="true" pageId="9" pageNumber="10">Stygiopontius lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFD598593F96F89956AAF4D2" bold="true" box="[700,765,1728,1752]" pageId="9" pageNumber="10">
<taxonomicNameLabel id="DCADCD00FFD598593F96F89956AAF4D2" box="[700,765,1728,1752]" pageId="9" pageNumber="10" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, holotype Ψ: A, maxilla; B, maxilliped, posterior view; C, leg 1, anterior; D, leg 2, anterior.
</paragraph>
</caption>
<caption id="A195FCE1FFD6985A3C22F8C255AFF4F2" httpUri="https://zenodo.org/record/173357/files/figure.png" pageId="10" pageNumber="11" targetBox="[277,1319,333,1663]" targetPageId="10">
<paragraph id="F555AC69FFD6985A3C22F8C255AFF4F2" blockId="10.[264,1323,1691,1784]" pageId="10" pageNumber="11">
<emphasis id="C79E707BFFD6985A3C22F8C255DAF4B9" bold="true" box="[264,397,1691,1715]" pageId="10" pageNumber="11">FIGURE 6.</emphasis>
<taxonomicName id="32EAD7EAFFD6985A3CBCF8C556FCF4B9" box="[406,683,1692,1715]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="10" pageNumber="11" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD6985A3CBCF8C556FCF4B9" box="[406,683,1692,1715]" italics="true" pageId="10" pageNumber="11">Stygiopontius lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFD6985A3F9EF8C256A5F4B9" bold="true" box="[692,754,1691,1715]" pageId="10" pageNumber="11">
<taxonomicNameLabel id="DCADCD00FFD6985A3F9EF8C256A5F4B9" box="[692,754,1691,1715]" pageId="10" pageNumber="11" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, holotype Ψ: A, leg 3, posterior; B, distal exopodal segment of leg 3, posterior; C, leg 4, anterior, arrows indicate missing spines; D, leg 5, left, lost seta arrowed; E, leg 6, left.
</paragraph>
</caption>
<caption id="A195FCE1FFD7985B3C22F8EF57A1F519" httpUri="https://zenodo.org/record/173358/files/figure.png" pageId="11" pageNumber="12" targetBox="[264,1322,328,1692]" targetPageId="11">
<paragraph id="F555AC69FFD7985B3C22F8EF57A1F519" blockId="11.[264,1323,1718,1811]" pageId="11" pageNumber="12">
<emphasis id="C79E707BFFD7985B3C22F8EF55DAF4C4" bold="true" box="[264,397,1718,1742]" pageId="11" pageNumber="12">FIGURE 7.</emphasis>
<taxonomicName id="32EAD7EAFFD7985B3CB2F8EE56F9F4C4" box="[408,686,1719,1742]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD7985B3CB2F8EE56F9F4C4" box="[408,686,1719,1742]" italics="true" pageId="11" pageNumber="12">Stygiopontius lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFD7985B3F92F8EF56AFF4C4" bold="true" box="[696,760,1718,1742]" pageId="11" pageNumber="12">
<taxonomicNameLabel id="DCADCD00FFD7985B3F92F8EF56AFF4C4" box="[696,760,1718,1742]" pageId="11" pageNumber="12" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral.
</paragraph>
</caption>
<caption id="A195FCE1FFD0985C3C22F8CA573EF4FA" httpUri="https://zenodo.org/record/173359/files/figure.png" pageId="12" pageNumber="13" targetBox="[304,1302,325,1662]" targetPageId="12">
<paragraph id="F555AC69FFD0985C3C22F8CA573EF4FA" blockId="12.[264,1323,1683,1776]" pageId="12" pageNumber="13">
<emphasis id="C79E707BFFD0985C3C22F8CA55DBF4A1" bold="true" box="[264,396,1683,1707]" pageId="12" pageNumber="13">FIGURE 8.</emphasis>
<taxonomicName id="32EAD7EAFFD0985C3CB8F8CA56F2F4A0" box="[402,677,1683,1706]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD0985C3CB8F8CA56F2F4A0" box="[402,677,1683,1706]" italics="true" pageId="12" pageNumber="13">Stygiopontius lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFD0985C3F86F8CA56BEF4A1" bold="true" box="[684,745,1683,1707]" pageId="12" pageNumber="13">
<taxonomicNameLabel id="DCADCD00FFD0985C3F86F8CA56BEF4A1" box="[684,745,1683,1707]" pageId="12" pageNumber="13" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, allotype ɗ: A, antennule; B, antennule, outgrowth of segment 3; C, modified seta of segment 5; D, 6 distalmost segments of antennule, modified setae arrowed; E, maxilliped, anterior; F, maxilliped, posterior.
</paragraph>
</caption>
<caption id="A195FCE1FFD1985D3C22F85A571DF46A" httpUri="https://zenodo.org/record/173360/files/figure.png" pageId="13" pageNumber="14" targetBox="[294,1283,326,1506]" targetPageId="13">
<paragraph id="F555AC69FFD1985D3C22F85A571DF46A" blockId="13.[264,1323,1539,1632]" pageId="13" pageNumber="14">
<emphasis id="C79E707BFFD1985D3C22F85A55DAF411" bold="true" box="[264,397,1539,1563]" pageId="13" pageNumber="14">FIGURE 9.</emphasis>
<taxonomicName id="32EAD7EAFFD1985D3CB2F85A56FAF410" box="[408,685,1539,1562]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD1985D3CB2F85A56FAF410" box="[408,685,1539,1562]" italics="true" pageId="13" pageNumber="14">Stygiopontius lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFD1985D3F9DF85A56A1F411" bold="true" box="[695,758,1539,1563]" pageId="13" pageNumber="14">
<taxonomicNameLabel id="DCADCD00FFD1985D3F9DF85A56A1F411" box="[695,758,1539,1563]" pageId="13" pageNumber="14" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
, allotype ɗ: A, distal endopodal segment of leg 1, posterior; B, endopod, inner margin of coxa and basis, intercoxal sclerite of leg 2, anterior; C, distal exopodal segment of leg 3, anterior; D, leg 5, ventral.
</paragraph>
</caption>
<paragraph id="F555AC69FFD1985D3C12F8EA5613F4C7" blockId="13.[264,1324,1715,1901]" box="[312,580,1715,1741]" pageId="13" pageNumber="14">Egg sacs not observed.</paragraph>
<paragraph id="F555AC69FFD1985D3C12F882570DF4FF" blockId="13.[264,1324,1715,1901]" box="[312,858,1755,1781]" pageId="13" pageNumber="14">
<emphasis id="C79E707BFFD1985D3C12F88255B6F4FE" box="[312,481,1755,1780]" italics="true" pageId="13" pageNumber="14">Male allotype.</emphasis>
Differs from female as follows:
</paragraph>
<paragraph id="F555AC69FFD1985D3C12F95A517BF567" blockId="13.[264,1324,1715,1901]" pageId="13" pageNumber="14">
Body (
<figureCitation id="6DD1B0ECFFD1985D3CA2F95A5598F517" box="[392,463,1795,1821]" captionStart="FIGURE 7" captionStartId="11.[264,367,1718,1742]" captionTargetBox="[264,1322,328,1692]" captionTargetId="figure@11.[258,1346,324,1714]" captionTargetPageId="11" captionText="FIGURE 7. Stygiopontius lomonosovi n. sp., allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral." httpUri="https://zenodo.org/record/173358/files/figure.png" pageId="13" pageNumber="14">Fig. 7</figureCitation>
A–B): total length of allotype, excluding caudal setae, 
<quantity id="3212018CFFD1985D397DF95A5093F517" box="[1111,1220,1795,1821]" metricMagnitude="-3" metricUnit="m" metricValue="1.03" pageId="13" pageNumber="14" unit="mm" value="1.03">1.03 mm</quantity>
, greatest width 
<quantity id="3212018CFFD1985D3C79F9725597F54F" box="[339,448,1835,1861]" metricMagnitude="-4" metricUnit="m" metricValue="5.6" pageId="13" pageNumber="14" unit="mm" value="0.56">0.56 mm</quantity>
. Shield of cephalothorax and tergites of 2 anterior metasomites with small pointed posterolateral processes, also present in female, but not visible in dorsal view.
</paragraph>
<paragraph id="F555AC69FFD2985E3C22FF455053F3DC" blockId="14.[264,1324,284,1870]" pageId="14" pageNumber="15">
Urosome (
<figureCitation id="6DD1B0ECFFD2985E3CAFFF45559CF33C" box="[389,459,284,310]" captionStart="FIGURE 7" captionStartId="11.[264,367,1718,1742]" captionTargetBox="[264,1322,328,1692]" captionTargetId="figure@11.[258,1346,324,1714]" captionTargetPageId="11" captionText="FIGURE 7. Stygiopontius lomonosovi n. sp., allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral." httpUri="https://zenodo.org/record/173358/files/figure.png" pageId="14" pageNumber="15">Fig. 7</figureCitation>
C–E) 6­segmented, consisting of fifth pedigerous somite, genital somite, and 4 postgenital somites. Genital somite with pair of posterior genital flaps on ventral side (
<figureCitation id="6DD1B0ECFFD2985E3C66FF3555C2F38C" box="[332,405,364,390]" captionStart="FIGURE 7" captionStartId="11.[264,367,1718,1742]" captionTargetBox="[264,1322,328,1692]" captionTargetId="figure@11.[258,1346,324,1714]" captionTargetPageId="11" captionText="FIGURE 7. Stygiopontius lomonosovi n. sp., allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral." httpUri="https://zenodo.org/record/173358/files/figure.png" pageId="14" pageNumber="15">Fig. 7</figureCitation>
D) and posterodorsal prominence visible from lateral view (
<figureCitation id="6DD1B0ECFFD2985E3953FF355093F38C" box="[1145,1220,364,390]" captionStart="FIGURE 7" captionStartId="11.[264,367,1718,1742]" captionTargetBox="[264,1322,328,1692]" captionTargetId="figure@11.[258,1346,324,1714]" captionTargetPageId="11" captionText="FIGURE 7. Stygiopontius lomonosovi n. sp., allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral." httpUri="https://zenodo.org/record/173358/files/figure.png" pageId="14" pageNumber="15">Fig. 7</figureCitation>
E). First abdominal somite corresponding to abdominal somite included in the female genital double­somite and possessing posterolateral spiniform processes.
</paragraph>
<paragraph id="F555AC69FFD2985E3C12FFBD56A8F0E4" blockId="14.[264,1324,284,1870]" pageId="14" pageNumber="15">
Antennule (
<figureCitation id="6DD1B0ECFFD2985E3CE0FFBD5640F3F4" box="[458,535,484,510]" captionStart="FIGURE 8" captionStartId="12.[264,368,1683,1707]" captionTargetBox="[304,1302,325,1662]" captionTargetId="figure@12.[242,1345,299,1676]" captionTargetPageId="12" captionText="FIGURE 8. Stygiopontius lomonosovi n. sp., allotype ɗ: A, antennule; B, antennule, outgrowth of segment 3; C, modified seta of segment 5; D, 6 distalmost segments of antennule, modified setae arrowed; E, maxilliped, anterior; F, maxilliped, posterior." httpUri="https://zenodo.org/record/173359/files/figure.png" pageId="14" pageNumber="15">Fig. 8</figureCitation>
A–D) 12­segmented, geniculate between segments 10 and 11; formula of setation as follows: 1, 2, 12, 8, 2, 2, 4, 2, 2, 4, 4+aesthetasc, 12. Segments 2 and 3 correspond to segment 2 of female antennule. Distal part of segment 3 with long curved process bearing subterminal seta (
<figureCitation id="6DD1B0ECFFD2985E3F99FC055757F07C" box="[691,768,604,630]" captionStart="FIGURE 8" captionStartId="12.[264,368,1683,1707]" captionTargetBox="[304,1302,325,1662]" captionTargetId="figure@12.[242,1345,299,1676]" captionTargetPageId="12" captionText="FIGURE 8. Stygiopontius lomonosovi n. sp., allotype ɗ: A, antennule; B, antennule, outgrowth of segment 3; C, modified seta of segment 5; D, 6 distalmost segments of antennule, modified setae arrowed; E, maxilliped, anterior; F, maxilliped, posterior." httpUri="https://zenodo.org/record/173359/files/figure.png" pageId="14" pageNumber="15">Fig. 8</figureCitation>
B). Segment 4 with 3 incomplete arthrodial membranes indicating a segment complex. Segment 5 with ventral process and curved stout spine on it (
<figureCitation id="6DD1B0ECFFD2985E3CFAFCF55641F0CC" box="[464,534,684,710]" captionStart="FIGURE 8" captionStartId="12.[264,368,1683,1707]" captionTargetBox="[304,1302,325,1662]" captionTargetId="figure@12.[242,1345,299,1676]" captionTargetPageId="12" captionText="FIGURE 8. Stygiopontius lomonosovi n. sp., allotype ɗ: A, antennule; B, antennule, outgrowth of segment 3; C, modified seta of segment 5; D, 6 distalmost segments of antennule, modified setae arrowed; E, maxilliped, anterior; F, maxilliped, posterior." httpUri="https://zenodo.org/record/173359/files/figure.png" pageId="14" pageNumber="15">Fig. 8</figureCitation>
C). Two setae on segment 10 and 3 setae of segment 11 modified to short flattened element (
<figureCitation id="6DD1B0ECFFD2985E3F0FFC8D563EF0E4" box="[549,617,724,750]" captionStart="FIGURE 8" captionStartId="12.[264,368,1683,1707]" captionTargetBox="[304,1302,325,1662]" captionTargetId="figure@12.[242,1345,299,1676]" captionTargetPageId="12" captionText="FIGURE 8. Stygiopontius lomonosovi n. sp., allotype ɗ: A, antennule; B, antennule, outgrowth of segment 3; C, modified seta of segment 5; D, 6 distalmost segments of antennule, modified setae arrowed; E, maxilliped, anterior; F, maxilliped, posterior." httpUri="https://zenodo.org/record/173359/files/figure.png" pageId="14" pageNumber="15">Fig. 8</figureCitation>
D, arrowed).
</paragraph>
<paragraph id="F555AC69FFD2985E3C12FCA5553EF184" blockId="14.[264,1324,284,1870]" pageId="14" pageNumber="15">
Maxilliped (
<figureCitation id="6DD1B0ECFFD2985E3CE4FCA5564FF11C" box="[462,536,764,790]" captionStart="FIGURE 8" captionStartId="12.[264,368,1683,1707]" captionTargetBox="[304,1302,325,1662]" captionTargetId="figure@12.[242,1345,299,1676]" captionTargetPageId="12" captionText="FIGURE 8. Stygiopontius lomonosovi n. sp., allotype ɗ: A, antennule; B, antennule, outgrowth of segment 3; C, modified seta of segment 5; D, 6 distalmost segments of antennule, modified setae arrowed; E, maxilliped, anterior; F, maxilliped, posterior." httpUri="https://zenodo.org/record/173359/files/figure.png" pageId="14" pageNumber="15">Fig. 8</figureCitation>
E–F). Syncoxa prolonged medioventrally into terminal clawlike process with subterminal barbed seta. Inner seta of basis shorter than that of female. Segment 2 of endopod with 2 posterior setae, 1 distal and 1 middle (the last is absent in female).
</paragraph>
<paragraph id="F555AC69FFD2985E3C12FDC55714F624" blockId="14.[264,1324,284,1870]" pageId="14" pageNumber="15">
Distal endopodal segment of leg 1 (
<figureCitation id="6DD1B0ECFFD2985E3FFCFDC5574CF1BC" box="[726,795,924,950]" captionStart="FIGURE 9" captionStartId="13.[264,367,1539,1563]" captionTargetBox="[294,1283,326,1506]" captionTargetId="figure@13.[282,1298,300,1540]" captionTargetPageId="13" captionText="FIGURE 9. Stygiopontius lomonosovi n. sp., allotype ɗ: A, distal endopodal segment of leg 1, posterior; B, endopod, inner margin of coxa and basis, intercoxal sclerite of leg 2, anterior; C, distal exopodal segment of leg 3, anterior; D, leg 5, ventral." httpUri="https://zenodo.org/record/173360/files/figure.png" pageId="14" pageNumber="15">Fig. 9</figureCitation>
A) and distal exopodal segment of leg 3 (
<figureCitation id="6DD1B0ECFFD2985E39D6FDC55540F1D4" captionStart="FIGURE 9" captionStartId="13.[264,367,1539,1563]" captionTargetBox="[294,1283,326,1506]" captionTargetId="figure@13.[282,1298,300,1540]" captionTargetPageId="13" captionText="FIGURE 9. Stygiopontius lomonosovi n. sp., allotype ɗ: A, distal endopodal segment of leg 1, posterior; B, endopod, inner margin of coxa and basis, intercoxal sclerite of leg 2, anterior; C, distal exopodal segment of leg 3, anterior; D, leg 5, ventral." httpUri="https://zenodo.org/record/173360/files/figure.png" pageId="14" pageNumber="15">Fig. 9</figureCitation>
C) with group of slender posterior setules. Leg 2 (
<figureCitation id="6DD1B0ECFFD2985E3E43FD9D57E6F1D4" box="[873,945,964,990]" captionStart="FIGURE 9" captionStartId="13.[264,367,1539,1563]" captionTargetBox="[294,1283,326,1506]" captionTargetId="figure@13.[282,1298,300,1540]" captionTargetPageId="13" captionText="FIGURE 9. Stygiopontius lomonosovi n. sp., allotype ɗ: A, distal endopodal segment of leg 1, posterior; B, endopod, inner margin of coxa and basis, intercoxal sclerite of leg 2, anterior; C, distal exopodal segment of leg 3, anterior; D, leg 5, ventral." httpUri="https://zenodo.org/record/173360/files/figure.png" pageId="14" pageNumber="15">Fig. 9</figureCitation>
B): distal endopodal segment of leg 2 with 1 outer, 2 terminal, and 1 distomedial spine (formula I,II,I,2), outermost terminal spine curved inwardly; coxal seta short.
</paragraph>
<paragraph id="F555AC69FFD2985E3C12FA6557D6F674" blockId="14.[264,1324,284,1870]" pageId="14" pageNumber="15">
Leg 5 (
<figureCitation id="6DD1B0ECFFD2985E3CA6FA655580F65C" box="[396,471,1084,1110]" captionStart="FIGURE 7" captionStartId="11.[264,367,1718,1742]" captionTargetBox="[264,1322,328,1692]" captionTargetId="figure@11.[258,1346,324,1714]" captionTargetPageId="11" captionText="FIGURE 7. Stygiopontius lomonosovi n. sp., allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral." httpUri="https://zenodo.org/record/173358/files/figure.png" pageId="14" pageNumber="15">Figs 7</figureCitation>
D, 9D) located ventrally. Basis fused with somite represented by 1 outer seta, exopodal segment articulate, armed with 3 setae.
</paragraph>
<paragraph id="F555AC69FFD2985E3C12FAD550EEF6AC" blockId="14.[264,1324,284,1870]" box="[312,1209,1164,1190]" pageId="14" pageNumber="15">
Leg 6 (
<figureCitation id="6DD1B0ECFFD2985E3CA1FAD55587F6AC" box="[395,464,1164,1190]" captionStart="FIGURE 7" captionStartId="11.[264,367,1718,1742]" captionTargetBox="[264,1322,328,1692]" captionTargetId="figure@11.[258,1346,324,1714]" captionTargetPageId="11" captionText="FIGURE 7. Stygiopontius lomonosovi n. sp., allotype ɗ: A, habitus, dorsal; B, ventral view of cephalothorax, position of cephalic appendages marked by dashed circles; C, urosome, dorsal, arrow indicates missing seta; D, urosome, ventral; E, urosome, lateral." httpUri="https://zenodo.org/record/173358/files/figure.png" pageId="14" pageNumber="15">Fig. 7</figureCitation>
D–E) represented by genital flap bearing 2 long posterior setae.
</paragraph>
<paragraph id="F555AC69FFD2985E3C12FAED5651F6C4" blockId="14.[264,1324,284,1870]" box="[312,518,1204,1230]" pageId="14" pageNumber="15">Colour unknown.</paragraph>
<paragraph id="F555AC69FFD2985E3C12FA85517CF547" blockId="14.[264,1324,284,1870]" pageId="14" pageNumber="15">
Remarks. 
<taxonomicName id="32EAD7EAFFD2985E3C92FA8556B9F6FF" box="[440,750,1244,1269]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD2985E3C92FA8556B9F6FF" box="[440,750,1244,1269]" italics="true" pageId="14" pageNumber="15">Stygiopontius lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFD2985E3FD4FA85571DF6FC" bold="true" box="[766,842,1244,1270]" pageId="14" pageNumber="15">
<taxonomicNameLabel id="DCADCD00FFD2985E3FD4FA85571DF6FC" box="[766,842,1244,1270]" pageId="14" pageNumber="15" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
can be easily assigned to the genus 
<taxonomicName id="32EAD7EAFFD2985E3C22FB5D55F0F717" box="[264,423,1284,1309]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="genus">
<emphasis id="C79E707BFFD2985E3C22FB5D55F0F717" box="[264,423,1284,1309]" italics="true" pageId="14" pageNumber="15">Stygiopontius</emphasis>
</taxonomicName>
by the combination of the following characters: the endopod of leg 1 is 3­ segmented; the endopod of leg 4 is 2­segmented, its first segment unarmed and its second segment with two setae (one terminal and one inner) (
<bibRefCitation id="917BD198FFD2985E3EAEFB0D50E6F764" author="Ivanenko" box="[900,1201,1364,1390]" pageId="14" pageNumber="21" refString="Ivanenko, V. N. &amp; Ferrari, F. D. (2003) A new genus and species of the family Dirivultidae (Copepoda, Siphonostomatoida) from a deep-sea hydrothermal vent at the Juan de Fuca Ridge (Pacific Ocean) with comments of dirivultid distribution. Arthropoda Selecta, 11 (3), 177 - 185." type="journal article" year="2003">Ivanenko &amp; Ferrari 2003</bibRefCitation>
). The new species is similar to 
<taxonomicName id="32EAD7EAFFD2985E3CDEFB2556A0F79C" authority="Humes, 1996" authorityName="Humes" authorityYear="1996" box="[500,759,1404,1430]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="mirus">
<emphasis id="C79E707BFFD2985E3CDEFB255603F79F" box="[500,596,1404,1429]" italics="true" pageId="14" pageNumber="15">S. mirus</emphasis>
<bibRefCitation id="917BD198FFD2985E3F71FB2556A0F79C" author="Humes" box="[603,759,1404,1430]" pageId="14" pageNumber="20" refString="Humes, A. G. (1996) Deep-sea Copepoda (Siphonostomatoida) from hydrothermal sites on the Mid- Atlantic Ridge at 23 ° and 37 ° N. Bulletin of Marine Science, 58, 609 - 653." type="journal article" year="1996">Humes, 1996</bibRefCitation>
</taxonomicName>
and 
<taxonomicName id="32EAD7EAFFD2985E3E05FB255068F79C" authority="Humes, 1996" authorityName="Humes" authorityYear="1996" box="[815,1087,1404,1430]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="latulus">
<emphasis id="C79E707BFFD2985E3E05FB2557CBF79F" box="[815,924,1404,1429]" italics="true" pageId="14" pageNumber="15">S. latulus</emphasis>
<bibRefCitation id="917BD198FFD2985E3E89FB255068F79C" author="Humes" box="[931,1087,1404,1430]" pageId="14" pageNumber="20" refString="Humes, A. G. (1996) Deep-sea Copepoda (Siphonostomatoida) from hydrothermal sites on the Mid- Atlantic Ridge at 23 ° and 37 ° N. Bulletin of Marine Science, 58, 609 - 653." type="journal article" year="1996">Humes, 1996</bibRefCitation>
</taxonomicName>
(described from the Snake Pit (23ºN) of the MAR) sharing with the new species the unusual medioventrally prolonged syncoxa of the maxilliped. The new species can be distinguished from both 
<taxonomicName id="32EAD7EAFFD2985E383EFB95551CF407" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="mirus">
<emphasis id="C79E707BFFD2985E383EFB95551CF407" italics="true" pageId="14" pageNumber="15">S. mirus</emphasis>
</taxonomicName>
and 
<taxonomicName id="32EAD7EAFFD2985E3CACFBAD55A2F407" box="[390,501,1524,1549]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="latulus">
<emphasis id="C79E707BFFD2985E3CACFBAD55A2F407" box="[390,501,1524,1549]" italics="true" pageId="14" pageNumber="15">S. latulus</emphasis>
</taxonomicName>
by the absence of one spine on the distal exopodal segment of leg 4: armature formula II,I,4, instead of III,I,4 as found in 
<taxonomicName id="32EAD7EAFFD2985E3EA7F84557A7F43F" box="[909,1008,1564,1589]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="mirus">
<emphasis id="C79E707BFFD2985E3EA7F84557A7F43F" box="[909,1008,1564,1589]" italics="true" pageId="14" pageNumber="15">S. mirus</emphasis>
</taxonomicName>
and 
<taxonomicName id="32EAD7EAFFD2985E3905F84550C8F43F" box="[1071,1183,1564,1589]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="latulus">
<emphasis id="C79E707BFFD2985E3905F84550C8F43F" box="[1071,1183,1564,1589]" italics="true" pageId="14" pageNumber="15">S. latulus</emphasis>
</taxonomicName>
. Five other congeners possess only two outer spines on the third exopodal segment of leg 4, viz. 
<taxonomicName id="32EAD7EAFFD2985E383EF81D564FF48C" authority="Humes, 1987" authorityName="Humes" authorityYear="1987" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="cinctiger">
<emphasis id="C79E707BFFD2985E383EF81D5527F48F" italics="true" pageId="14" pageNumber="15">S. cinctiger</emphasis>
<bibRefCitation id="917BD198FFD2985E3C52F835564FF48C" author="Humes" box="[376,536,1644,1670]" pageId="14" pageNumber="20" refString="Humes, A. G. (1987) Copepoda from deep-sea hydrothermal vents. Bulletin of Marine Science, 41, 645 - 788." type="journal article" year="1987">Humes, 1987</bibRefCitation>
</taxonomicName>
; 
<taxonomicName id="32EAD7EAFFD2985E3F0EF83557D4F48C" authority="Humes, 1987" authorityName="Humes" authorityYear="1987" box="[548,899,1644,1670]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="mucroniferus">
<emphasis id="C79E707BFFD2985E3F0EF835568BF48F" box="[548,732,1644,1669]" italics="true" pageId="14" pageNumber="15">S. mucroniferus</emphasis>
<bibRefCitation id="917BD198FFD2985E3FCEF83557D4F48C" author="Humes" box="[740,899,1644,1670]" pageId="14" pageNumber="20" refString="Humes, A. G. (1987) Copepoda from deep-sea hydrothermal vents. Bulletin of Marine Science, 41, 645 - 788." type="journal article" year="1987">Humes, 1987</bibRefCitation>
</taxonomicName>
; 
<taxonomicName id="32EAD7EAFFD2985E3EA5F83550DCF48C" authority="Humes, 1996" authorityName="Humes" authorityYear="1996" box="[911,1163,1644,1670]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="teres">
<emphasis id="C79E707BFFD2985E3EA5F83557B2F48F" box="[911,997,1644,1669]" italics="true" pageId="14" pageNumber="15">S. teres</emphasis>
<bibRefCitation id="917BD198FFD2985E3EC6F83550DCF48C" author="Humes" box="[1004,1163,1644,1670]" pageId="14" pageNumber="20" refString="Humes, A. G. (1996) Deep-sea Copepoda (Siphonostomatoida) from hydrothermal sites on the Mid- Atlantic Ridge at 23 ° and 37 ° N. Bulletin of Marine Science, 58, 609 - 653." type="journal article" year="1996">Humes, 1996</bibRefCitation>
</taxonomicName>
; 
<taxonomicName id="32EAD7EAFFD2985E39B2F83555FFF4A4" authority="Humes, 1997" authorityName="Humes" authorityYear="1997" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="rimivagus">
<emphasis id="C79E707BFFD2985E39B2F835517DF48F" box="[1176,1322,1644,1669]" italics="true" pageId="14" pageNumber="15">S. rimivagus</emphasis>
<bibRefCitation id="917BD198FFD2985E3C22F8CD55FFF4A4" author="Humes" box="[264,424,1684,1710]" pageId="14" pageNumber="20" refString="Humes, A. G. (1997) Siphonostomatoid copepods from deep-sea hydrothermal sites on the Mid- Atlantic Ridge west of the Azores. Cahiers de Biologie Marine, 34, 63 - 77." type="journal article" year="1997">Humes, 1997</bibRefCitation>
</taxonomicName>
; 
<taxonomicName id="32EAD7EAFFD2985E3C9FF8CD575FF4A4" authority="Humes 1987" authorityName="Humes" authorityYear="1987" box="[437,776,1684,1710]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="verruculatus">
<emphasis id="C79E707BFFD2985E3C9FF8CD5630F4A7" box="[437,615,1684,1709]" italics="true" pageId="14" pageNumber="15">S. verruculatus</emphasis>
<bibRefCitation id="917BD198FFD2985E3F45F8CD575FF4A4" author="Humes" box="[623,776,1684,1710]" pageId="14" pageNumber="20" refString="Humes, A. G. (1987) Copepoda from deep-sea hydrothermal vents. Bulletin of Marine Science, 41, 645 - 788." type="journal article" year="1987">Humes 1987</bibRefCitation>
</taxonomicName>
. In this group, only females are known for the first three species and only males are described for the last two species. The following attributes distinguish these species from 
<taxonomicName id="32EAD7EAFFD2985E3E24F8BD57EDF4F7" box="[782,954,1764,1789]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD2985E3E24F8BD57EDF4F7" box="[782,954,1764,1789]" italics="true" pageId="14" pageNumber="15">S. lomonosovi</emphasis>
</taxonomicName>
<emphasis id="C79E707BFFD2985E3EE0F8BD5042F4F4" bold="true" box="[970,1045,1764,1790]" pageId="14" pageNumber="15">
<taxonomicNameLabel id="DCADCD00FFD2985E3EE0F8BD5042F4F4" box="[970,1045,1764,1790]" pageId="14" pageNumber="15" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
: the maxilliped of 
<taxonomicName id="32EAD7EAFFD2985E383EF8BD552AF52F" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="rimivagus">
<emphasis id="C79E707BFFD2985E383EF8BD552AF52F" italics="true" pageId="14" pageNumber="15">S. rimivagus</emphasis>
</taxonomicName>
and 
<taxonomicName id="32EAD7EAFFD2985E3C9DF955563FF52F" box="[439,616,1804,1829]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="verruculatus">
<emphasis id="C79E707BFFD2985E3C9DF955563FF52F" box="[439,616,1804,1829]" italics="true" pageId="14" pageNumber="15">S. verruculatus</emphasis>
</taxonomicName>
lacks an elongation of the syncoxa; leg 5 of 
<taxonomicName id="32EAD7EAFFD2985E3952F955509AF52F" box="[1144,1229,1804,1829]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="teres">
<emphasis id="C79E707BFFD2985E3952F955509AF52F" box="[1144,1229,1804,1829]" italics="true" pageId="14" pageNumber="15">S. teres</emphasis>
</taxonomicName>
is short and 1­segmented, its prosome moderately slender; the coxa and basis of maxilliped of 
<emphasis id="C79E707BFFD2985E383EF96D517CF547" box="[1300,1323,1844,1869]" italics="true" pageId="14" pageNumber="15">S.</emphasis>
</paragraph>
<paragraph id="F555AC69FFD3985F3C22FF455537F354" blockId="15.[264,1323,284,750]" pageId="15" pageNumber="16">
<taxonomicName id="32EAD7EAFFD3985F3C22FF4555F4F33F" box="[264,419,284,309]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="mucroniferus">
<emphasis id="C79E707BFFD3985F3C22FF4555F4F33F" box="[264,419,284,309]" italics="true" pageId="15" pageNumber="16">mucroniferus</emphasis>
</taxonomicName>
are armed with a stout seta; the second abdominal somite of 
<taxonomicName id="32EAD7EAFFD3985F39ACFF45515AF33F" box="[1158,1293,284,309]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="cinctiger">
<emphasis id="C79E707BFFD3985F39ACFF45515AF33F" box="[1158,1293,284,309]" italics="true" pageId="15" pageNumber="16">S. cinctiger</emphasis>
</taxonomicName>
is shorter.
</paragraph>
<paragraph id="F555AC69FFD3985F3C12FF35565FF0E4" blockId="15.[264,1323,284,750]" pageId="15" pageNumber="16">
Males of 12 valid species included in the genus 
<taxonomicName id="32EAD7EAFFD3985F3E58FF355046F38F" box="[882,1041,364,389]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="genus">
<emphasis id="C79E707BFFD3985F3E58FF355046F38F" box="[882,1041,364,389]" italics="true" pageId="15" pageNumber="16">Stygiopontius</emphasis>
</taxonomicName>
have been described so far. Only males of 
<taxonomicName id="32EAD7EAFFD3985F3CDEFFCD56CAF3A7" box="[500,669,404,429]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="lomonosovi" status="sp. nov.">
<emphasis id="C79E707BFFD3985F3CDEFFCD56CAF3A7" box="[500,669,404,429]" italics="true" pageId="15" pageNumber="16">S. lomonosovi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="DCADCD00FFD3985F3F83FFCD56BBF3A4" box="[681,748,404,430]" pageId="15" pageNumber="16" rank="species">sp. n.</taxonomicNameLabel>
and five other species (
<emphasis id="C79E707BFFD3985F3933FFCD5155F3A7" box="[1049,1282,404,429]" italics="true" pageId="15" pageNumber="16">
<taxonomicName id="32EAD7EAFFD3985F3933FFCD50D7F3A7" box="[1049,1152,404,429]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="mirus">S. mirus</taxonomicName>
, 
<taxonomicName id="32EAD7EAFFD3985F39BAFFCD5155F3A7" box="[1168,1282,404,429]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="latulus">S. latulus</taxonomicName>
</emphasis>
, 
<taxonomicName id="32EAD7EAFFD3985F383EFFCD567EF3DC" authority="Humes, 1991" authorityName="Humes" authorityYear="1991" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="brevispina">
<emphasis id="C79E707BFFD3985F383EFFCD55D4F3DF" italics="true" pageId="15" pageNumber="16">S. brevispina</emphasis>
<bibRefCitation id="917BD198FFD3985F3CA0FFE5567EF3DC" author="Humes" box="[394,553,444,470]" pageId="15" pageNumber="20" refString="Humes, A. G. (1991) Siphonostomatoid copepods from a deep-water hydrothermal zone in the Lau Basin, South Pacific. Bulletin du Museum national d'Histoire naturelle, Paris ser. 4, 13, section A, nos. 1 - 2, 121 - 134." type="journal article" year="1991">Humes, 1991</bibRefCitation>
</taxonomicName>
, 
<taxonomicName id="32EAD7EAFFD3985F3F1FFFE5570EF3DC" authority="Humes, 1991" authorityName="Humes" authorityYear="1991" box="[565,857,444,470]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="lauensis">
<emphasis id="C79E707BFFD3985F3F1FFFE556E4F3DF" box="[565,691,444,469]" italics="true" pageId="15" pageNumber="16">S. lauensis</emphasis>
<bibRefCitation id="917BD198FFD3985F3F90FFE5570EF3DC" author="Humes" box="[698,857,444,470]" pageId="15" pageNumber="20" refString="Humes, A. G. (1991) Siphonostomatoid copepods from a deep-water hydrothermal zone in the Lau Basin, South Pacific. Bulletin du Museum national d'Histoire naturelle, Paris ser. 4, 13, section A, nos. 1 - 2, 121 - 134." type="journal article" year="1991">Humes, 1991</bibRefCitation>
</taxonomicName>
, and 
<taxonomicName id="32EAD7EAFFD3985F3EBDFFE5507EF3DF" box="[919,1065,444,469]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="rimivagus">
<emphasis id="C79E707BFFD3985F3EBDFFE5507EF3DF" box="[919,1065,444,469]" italics="true" pageId="15" pageNumber="16">S. rimivagus</emphasis>
</taxonomicName>
) were recorded in the Lau Basin of the West Pacific and the MAR. They are characterized by reduction of two inner setae on the exopod of leg 5 (the segment is fused with the sixth thoracic somite in 
<taxonomicName id="32EAD7EAFFD3985F383EFC555500F047" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="latulus">
<emphasis id="C79E707BFFD3985F383EFC555500F047" italics="true" pageId="15" pageNumber="16">S. latulus</emphasis>
</taxonomicName>
). The exopod is armed with three setae instead of a maximum of five setae present in males of congeners. Further investigations of unknown males of dirivultid species are necessary to clarify if the reduction of the setae on the exopod of leg 5 can be used as a character to define a monophyletic lineage of 
<taxonomicName id="32EAD7EAFFD3985F3E1EFCF55784F0CF" box="[820,979,684,709]" class="Maxillopoda" family="Dirivultidae" genus="Stygiopontius" kingdom="Animalia" order="Siphonostomatoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="genus">
<emphasis id="C79E707BFFD3985F3E1EFCF55784F0CF" box="[820,979,684,709]" italics="true" pageId="15" pageNumber="16">Stygiopontius</emphasis>
</taxonomicName>
distributed in both the West Pacific and the MAR.
</paragraph>
</subSubSection>
</treatment>
</document>