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<document id="C6FE612A2A14ADCA4C9F7B3AE18DEB5E" ID-CLB-Dataset="24735" ID-DOI="10.11646/zootaxa.4702.1.17" ID-GBIF-Dataset="59eaf65b-cdfb-4cdb-899d-c134b38a5ca6" ID-ISSN="1175-5326" ID-Zenodo-Dep="3562759" ID-ZooBank="C03724E1-90FC-4FDC-B378-94D7B91617F7" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1575478901902" checkinUser="plazi" docAuthor="Hibino, Yusuke, Chiu, Yung-Chieh, Chen, Hong-Ming &amp; Shao, Kwang-Tsao" docDate="2019" docId="03BF904AFFADFFF397EB1598FEF32260" docLanguage="en" docName="zootaxa.4702.1.17.pdf" docOrigin="Zootaxa 4702 (1)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Ophichthus semilunatus Hibino &amp; Chiu &amp; Chen &amp; Shao 2019, sp. nov." docType="treatment" docVersion="10" lastPageNumber="147" masterDocId="FF86E832FFA9FFF4977C1126FFFD2529" masterDocTitle="Two new species of the genus Ophichthus from the western central Pacific Ocean with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes Ophichthidae)" masterLastPageNumber="154" masterPageNumber="140" pageNumber="144" updateTime="1698771606561" updateUser="ExternalLinkService">
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<mods:title id="A7BA95684B0E28D4C809D274625A05F1">Two new species of the genus Ophichthus from the western central Pacific Ocean with a redescription of Ophichthus megalops Asano, 1987 (Anguilliformes Ophichthidae)</mods:title>
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<mods:name id="1A4799B0BADB2B37269407A765B0C16E" type="personal">
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<mods:namePart id="01F6930552079563566849C6E9D1C3DE">Hibino, Yusuke</mods:namePart>
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<mods:namePart id="1B906B3F361DB36D6114D6CFC65537EA">Chiu, Yung-Chieh</mods:namePart>
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<mods:namePart id="C8E9D069809F2B3037B5988C4072EE47">Chen, Hong-Ming</mods:namePart>
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<mods:namePart id="D9536F06881CA7F55B52FC2D053E1672">Shao, Kwang-Tsao</mods:namePart>
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<mods:typeOfResource id="470423BB186323E9136D7DD33063EF4D">text</mods:typeOfResource>
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<mods:title id="D4AB045B388BCDF83B876ACB072BB537">Zootaxa</mods:title>
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<mods:date id="81C161B10EE448CBABD3F8A9E5F15425">2019</mods:date>
<mods:detail id="A5EF04B726E7A06C4BE85FCF290931D1" type="pubDate">
<mods:number id="8DF22602387AC94518C3B8168BCFFFB4">2019-12-04</mods:number>
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<mods:number id="7C7B133739C3C14C74559BA0833CAC5B">4702</mods:number>
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<treatment id="03BF904AFFADFFF397EB1598FEF32260" ID-DOI="http://doi.org/10.5281/zenodo.5307750" ID-GBIF-Taxon="160618145" ID-Zenodo-Dep="5307750" LSID="urn:lsid:plazi:treatment:03BF904AFFADFFF397EB1598FEF32260" httpUri="http://treatment.plazi.org/id/03BF904AFFADFFF397EB1598FEF32260" lastPageId="7" lastPageNumber="147" pageId="4" pageNumber="144">
<subSubSection id="C30C72D7FFADFFF097EB1598FD2F21D4" pageId="4" pageNumber="144" type="nomenclature">
<paragraph id="8BA9215CFFADFFF097EB1598FD0321F0" blockId="4.[151,766,1214,1313]" box="[151,766,1214,1241]" pageId="4" pageNumber="144">
<heading id="D0E19630FFADFFF097EB1598FD0321F0" bold="true" box="[151,766,1214,1241]" fontSize="11" level="1" pageId="4" pageNumber="144" reason="1">
<emphasis id="B962FD4EFFADFFF097EB1598FD0321F0" bold="true" box="[151,766,1214,1241]" pageId="4" pageNumber="144">
<taxonomicName id="4C165ADFFFADFFF097EB1598FD6421F1" authority="Hibino and Chiu" authorityName="Hibino &amp; Chiu &amp; Chen &amp; Shao" authorityYear="2019" box="[151,665,1214,1241]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="4" pageNumber="144" phylum="Chordata" rank="species" species="semilunatus" status="sp. nov.">
<emphasis id="B962FD4EFFADFFF097EB1598FE4221F0" bold="true" box="[151,447,1214,1241]" italics="true" pageId="4" pageNumber="144">Ophichthus semilunatus</emphasis>
Hibino and Chiu
</taxonomicName>
<taxonomicNameLabel id="A2514035FFADFFF095DC1599FD0321F0" box="[672,766,1215,1241]" pageId="4" pageNumber="144" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="8BA9215CFFADFFF097EB15C4FD2F21D4" blockId="4.[151,766,1214,1313]" box="[151,722,1250,1277]" pageId="4" pageNumber="144">(New English name: Half-moon Blotch Snake Eel)</paragraph>
</subSubSection>
<subSubSection id="C30C72D7FFADFFF097EB1420FDE02008" box="[151,541,1285,1313]" pageId="4" pageNumber="144" type="description">
<paragraph id="8BA9215CFFADFFF097EB1420FDE02008" blockId="4.[151,766,1214,1313]" box="[151,541,1285,1313]" pageId="4" pageNumber="144">
(New Taiwanese name:
<emphasis id="B962FD4EFFADFFF096D81423FDE92035" bold="true" box="[420,532,1285,1308]" pageId="4" pageNumber="144">÷ƞķḋ</emphasis>
)
</paragraph>
</subSubSection>
<subSubSection id="C30C72D7FFADFFF097EB146DFC94204A" box="[151,873,1354,1379]" pageId="4" pageNumber="144" type="reference_group">
<paragraph id="8BA9215CFFADFFF097EB146DFC94204A" blockId="4.[151,873,1354,1379]" box="[151,873,1354,1379]" pageId="4" pageNumber="144">
<treatmentCitationGroup id="AB060672FFADFFF097EB146DFC94204A" box="[151,873,1354,1379]" pageId="4" pageNumber="144">
<taxonomicName id="4C165ADFFFADFFF097EB146DFE8E204A" ID-CoL="49VHV" authorityName="Asano" authorityYear="1987" box="[151,371,1355,1379]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="4" pageNumber="144" phylum="Chordata" rank="species" species="megalops">
<emphasis id="B962FD4EFFADFFF097EB146DFE8E204A" box="[151,371,1355,1379]" italics="true" pageId="4" pageNumber="144">Ophichthus megalops</emphasis>
</taxonomicName>
(not Asano):
<treatmentCitation id="0AB7074DFFADFFF09682146DFD3F204A" ID-DOI="http://doi.org/10.5281/zenodo.5296241" ID-Zenodo-Dep="5296241" author="Ho, H. - C. &amp; Smith, D. G. &amp; McCosker, J. E. &amp; Hibino, Y. &amp; Loh, K. - H. &amp; Tighe, K. A. &amp; Shao, K. T." box="[510,706,1354,1379]" httpUri="http://treatment.plazi.org/id/03E987BEFFAFBA46BDDAFC21A8861CE5" page="173" pageId="4" pageNumber="144" year="2015">
<bibRefCitation id="EF875CADFFADFFF09682146DFD3F204A" author="Ho, H. - C. &amp; Smith, D. G. &amp; McCosker, J. E. &amp; Hibino, Y. &amp; Loh, K. - H. &amp; Tighe, K. A. &amp; Shao, K. T." box="[510,706,1354,1379]" pageId="4" pageNumber="144" pagination="140 - 189" refId="ref7553" refString="Ho, H. - C., Smith, D. G., McCosker, J. E., Hibino, Y., Loh, K. - H., Tighe, K. A. &amp; Shao, K. T. (2015) Annotated checklist of eels (orders Anguilliformes and Saccopharyngiformes) from Taiwan. Zootaxa, 4060 (1), 140 - 189. https: // doi. org / 10.11646 / zootaxa. 4060.1.16" type="journal article" year="2015">
Ho
<emphasis id="B962FD4EFFADFFF0955F146DFDAA204A" box="[547,599,1355,1379]" italics="true" pageId="4" pageNumber="144">et al.</emphasis>
2015: 173
</bibRefCitation>
</treatmentCitation>
(in part; Da-xi).
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="C30C72D7FFADFFF097EB14B7FCB220E6" pageId="4" pageNumber="144" type="materials_examined">
<paragraph id="8BA9215CFFADFFF097EB14B7FCB220E6" blockId="4.[151,1437,1424,1919]" pageId="4" pageNumber="144">
<materialsCitation id="3B7E2B01FFADFFF097EB14B7FCB220E6" ID-GBIF-Occurrence="2462935087" collectingDate="2012-11-12" collectionCode="NMMB-P" collectorName="H. - C. Ho." country="Taiwan" location="Da-xi" municipality="Yi-lan" pageId="4" pageNumber="144" specimenCount="1" typeStatus="holotype">
<emphasis id="B962FD4EFFADFFF097EB14B7FEF62082" bold="true" box="[151,267,1425,1451]" pageId="4" pageNumber="144">
<typeStatus id="54AD9FFEFFADFFF097EB14B7FEFB2082" box="[151,262,1425,1451]" pageId="4" pageNumber="144" type="holotype">Holotype</typeStatus>
.
</emphasis>
<collectionCode id="ED07B999FFADFFF0966914B6FE762082" box="[277,395,1424,1451]" pageId="4" pageNumber="144">NMMB-P</collectionCode>
<quantity id="4CEE8CB9FFADFFF096F714B6FDC12082" box="[395,572,1424,1451]" metricMagnitude="4" metricUnit="m" metricValue="1.77515" pageId="4" pageNumber="144" unit="mm" value="1.77515E7">17751, 500 mm</quantity>
TL, female with immature eggs,
<location id="8EC97787FFADFFF094BE14B7FBF82082" LSID="urn:lsid:plazi:treatment:03BF904AFFADFFF397EB1598FEF32260:8EC97787FFADFFF094BE14B7FBF82082" box="[962,1029,1425,1451]" country="Taiwan" municipality="Yi-lan" name="Da-xi" pageId="4" pageNumber="144">Da-xi</location>
,
<collectingMunicipality id="6BCDBB26FFADFFF0936D14B7FBA72082" box="[1041,1114,1425,1451]" pageId="4" pageNumber="144">Yi-lan</collectingMunicipality>
, northeastern
<collectingCountry id="F30161CCFFADFFF0938714B7FAAD2082" box="[1275,1360,1425,1451]" name="Taiwan" pageId="4" pageNumber="144">Taiwan</collectingCountry>
, depth unknown, bottom trawl,
<date id="FFA8079CFFADFFF096D71493FDBB20E6" box="[427,582,1461,1487]" pageId="4" pageNumber="144" value="2012-11-12">
<collectingDate id="EFECFE74FFADFFF096D71493FDBB20E6" box="[427,582,1461,1487]" pageId="4" pageNumber="144" value="2012-11-12">12 Nov. 2012</collectingDate>
</date>
, collected by
<collectorName id="26E3448AFFADFFF0959C1493FCB220E6" box="[736,847,1461,1487]" pageId="4" pageNumber="144">H.-C. Ho.</collectorName>
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="C30C72D7FFADFFF097BB14FEFE3723AA" pageId="4" pageNumber="144" type="diagnosis">
<paragraph id="8BA9215CFFADFFF097BB14FEFE3723AA" blockId="4.[151,1437,1424,1919]" pageId="4" pageNumber="144">
<emphasis id="B962FD4EFFADFFF097BB14FEFEBF20DA" bold="true" box="[199,322,1496,1523]" pageId="4" pageNumber="144">Diagnosis.</emphasis>
A species of
<taxonomicName id="4C165ADFFFADFFF096A714FFFDA120DA" authorityName="Ahl" authorityYear="1789" box="[475,604,1497,1523]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="4" pageNumber="144" phylum="Chordata" rank="genus">
<emphasis id="B962FD4EFFADFFF096A714FFFDA120DA" box="[475,604,1497,1523]" italics="true" pageId="4" pageNumber="144">Ophichthus</emphasis>
</taxonomicName>
with a dark-tipped anal fin, and the following combination of characters: head 9.4% TL; tail 57.5% TL; snout not acute, 19.0% HL; eye large, 93.3% of snout length and 17.7% HL; dorsalfin origin well behind pectoral-fin tip by about three pectoral-fin lengths; teeth on maxilla triserial; anterior margin of anus with a half-moon shaped dark marking; SO 1+3; POM 6 or 7+2; predorsal vertebrae 29, preanal vertebrae 64, and total vertebrae 176.
</paragraph>
</subSubSection>
<subSubSection id="C30C72D7FFADFFF397BB17AAFCA825FE" lastPageId="7" lastPageNumber="147" pageId="4" pageNumber="144" type="description">
<paragraph id="8BA9215CFFADFFF097BB17AAFE632256" blockId="4.[151,1437,1424,1919]" pageId="4" pageNumber="144">
<emphasis id="B962FD4EFFADFFF097BB17AAFEA4238E" bold="true" box="[199,345,1676,1703]" pageId="4" pageNumber="144">Description.</emphasis>
Counts and measurements (in mm) of the
<typeStatus id="54AD9FFEFFADFFF0944A17ABFC61238E" box="[822,924,1677,1703]" pageId="4" pageNumber="144" type="holotype">holotype</typeStatus>
: predorsal vertebrae 29; preanal vertebrae 64; total vertebrae 176; preanal lateral-line pores 65. Total length 500; head length 46.8; preanal length 212.0; tail length 287.5; predorsal length 103.5; body depth at gill opening 16.4; body depth at mid-anus 13.0; body width at gill opening 13.3; body width at mid-anus 13.5; snout length 8.9; eye diameter 8.3; upper-jaw length 19.7; gill opening length 4.3; interorbital width 6.1; isthmus width 10.0; pectoral-fin length 14.4; pectoral-fin base 4.5. Body long, subcylindrical, its depth at gill openings
<quantity id="4CEE8CB9FFADFFF0952B1666FD592272" box="[599,676,1856,1883]" metricMagnitude="-1" metricUnit="m" metricValue="7.747" pageId="4" pageNumber="144" unit="in" value="30.5">30.5 in</quantity>
TL; tail slightly compressed posteriorly, its depth reduced gradually, its tip elongate (
<figureCitation id="132D3DD9FFADFFF096371643FE6D2256" box="[331,400,1893,1919]" captionStart="FIGURE 3" captionStartId="5.[151,250,1944,1969]" captionTargetBox="[267,1278,217,1908]" captionTargetId="figure@5.[267,1320,181,1919]" captionTargetPageId="5" captionText="FIGURE 3. Preserved condition of Ophichthus semilunatus sp. nov., NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan. A, dorsal image; B, ventral image. Arrow indicates origin of dorsal fin." figureDoi="http://doi.org/10.5281/zenodo.3562765" httpUri="https://zenodo.org/record/3562765/files/figure.png" pageId="4" pageNumber="144">Fig. 3</figureCitation>
).
</paragraph>
<caption id="DF6971D4FFACFFF197EB16BEFC4022FC" ID-DOI="http://doi.org/10.5281/zenodo.3562765" ID-Zenodo-Dep="3562765" httpUri="https://zenodo.org/record/3562765/files/figure.png" pageId="5" pageNumber="145" startId="5.[151,250,1944,1969]" targetBox="[267,1278,217,1908]" targetPageId="5">
<paragraph id="8BA9215CFFACFFF197EB16BEFC4022FC" blockId="5.[151,1436,1944,2005]" pageId="5" pageNumber="145">
<emphasis id="B962FD4EFFACFFF197EB16BEFEE92298" bold="true" box="[151,276,1944,1969]" pageId="5" pageNumber="145">FIGURE 3.</emphasis>
Preserved condition of
<taxonomicName id="4C165ADFFFACFFF1957116BFFCFF2298" authority="Hibino &amp; Chiu &amp; Chen &amp; Shao, 2019" authorityName="Hibino &amp; Chiu &amp; Chen &amp; Shao" authorityYear="2019" box="[525,770,1945,1969]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="145" phylum="Chordata" rank="species" species="semilunatus" status="sp. nov.">
<emphasis id="B962FD4EFFACFFF1957116BFFCFF2298" box="[525,770,1945,1969]" italics="true" pageId="5" pageNumber="145">Ophichthus semilunatus</emphasis>
</taxonomicName>
<emphasis id="B962FD4EFFACFFF1947616BFFCA12298" bold="true" box="[778,860,1945,1969]" pageId="5" pageNumber="145">
<taxonomicNameLabel id="A2514035FFACFFF1947616BFFCA12298" box="[778,860,1945,1969]" pageId="5" pageNumber="145" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan. A, dorsal image; B, ventral image. Arrow indicates origin of dorsal fin.
</paragraph>
</caption>
<caption id="DF6971D4FFAFFFF297EB12D5FD7A217A" ID-DOI="http://doi.org/10.5281/zenodo.3562767" ID-Zenodo-Dep="3562767" httpUri="https://zenodo.org/record/3562767/files/figure.png" pageId="6" pageNumber="146" startId="6.[151,250,1011,1036]" targetBox="[274,1319,185,979]" targetPageId="6">
<paragraph id="8BA9215CFFAFFFF297EB12D5FD7A217A" blockId="6.[151,1437,1011,1108]" pageId="6" pageNumber="146">
<emphasis id="B962FD4EFFAFFFF297EB12D5FEEE2125" bold="true" box="[151,275,1011,1036]" pageId="6" pageNumber="146">FIGURE 4.</emphasis>
A, lateral view of head of
<taxonomicName id="4C165ADFFFAFFFF2956312D2FCEE2125" authority="Hibino &amp; Chiu &amp; Chen &amp; Shao, 2019" authorityName="Hibino &amp; Chiu &amp; Chen &amp; Shao" authorityYear="2019" box="[543,787,1012,1036]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="146" phylum="Chordata" rank="species" species="semilunatus" status="sp. nov.">
<emphasis id="B962FD4EFFAFFFF2956312D2FCEE2125" box="[543,787,1012,1036]" italics="true" pageId="6" pageNumber="146">Ophichthus semilunatus</emphasis>
</taxonomicName>
<emphasis id="B962FD4EFFAFFFF2946512D2FC942125" bold="true" box="[793,873,1012,1036]" pageId="6" pageNumber="146">
<taxonomicNameLabel id="A2514035FFAFFFF2946512D2FC942125" box="[793,873,1012,1036]" pageId="6" pageNumber="146" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan; B, arrangement of teeth on maxilla, palatal area; and C, mandible of
<taxonomicName id="4C165ADFFFAFFFF294D5153EFB602119" authority="Hibino &amp; Chiu &amp; Chen &amp; Shao, 2019" authorityName="Hibino &amp; Chiu &amp; Chen &amp; Shao" authorityYear="2019" box="[937,1181,1048,1072]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="146" phylum="Chordata" rank="species" species="semilunatus" status="sp. nov.">
<emphasis id="B962FD4EFFAFFFF294D5153EFB602119" box="[937,1181,1048,1072]" italics="true" pageId="6" pageNumber="146">Ophichthus semilunatus</emphasis>
</taxonomicName>
<emphasis id="B962FD4EFFAFFFF293DF153EFB092119" bold="true" box="[1187,1268,1048,1072]" pageId="6" pageNumber="146">
<taxonomicNameLabel id="A2514035FFAFFFF293DF153EFB092119" box="[1187,1268,1048,1072]" pageId="6" pageNumber="146" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
Arrows indicate interorbital (left) and mid-temporal (right) pores.
</paragraph>
</caption>
<paragraph id="8BA9215CFFAFFFF297BB1580FD6F2095" blockId="6.[151,1437,1190,2045]" pageId="6" pageNumber="146">
Head relatively large, branchial basket moderately expanded; head
<quantity id="4CEE8CB9FFAFFFF294CB1580FBF821E9" box="[951,1029,1190,1216]" metricMagnitude="-1" metricUnit="m" metricValue="2.6416" pageId="6" pageNumber="146" unit="in" value="10.4">10.4 in</quantity>
TL; head and trunk
<quantity id="4CEE8CB9FFAFFFF293951580FAD421E9" box="[1257,1321,1190,1216]" metricMagnitude="-2" metricUnit="m" metricValue="6.096" pageId="6" pageNumber="146" unit="in" value="2.4">2.4 in</quantity>
TL; snout short, not acute, its length almost equal to eye diameter; no ventral groove on snout; lower jaw included in upper jaw, its tip slightly beyond anterior base of anterior-nostril tube; mouth large, rictus well behind a vertical from posterior margin of eye, with a short, additional fold below rictus; eye large,
<quantity id="4CEE8CB9FFAFFFF294801434FBC02005" box="[1020,1085,1298,1324]" metricMagnitude="-2" metricUnit="m" metricValue="6.096" pageId="6" pageNumber="146" unit="in" value="2.4">2.4 in</quantity>
upper jaw and
<quantity id="4CEE8CB9FFAFFFF293901437FAD02005" box="[1260,1325,1297,1324]" metricMagnitude="-1" metricUnit="m" metricValue="1.4223999999999999" pageId="6" pageNumber="146" unit="in" value="5.6">5.6 in</quantity>
head; anterior nostril tubular, a simple tube with a shallow notch on rim anteriorly; posterior nostril a hole opening outside of mouth, above upper lip, the hole with an extremely tiny flap anteriorly; upper lip smooth, without protrusions, numerous small papillae on inner upper and lower lips; interorbital region smooth and mostly flat; gill opening constricted, located ventrolaterally (
<figureCitation id="132D3DD9FFAFFFF295571484FD782095" box="[555,645,1442,1468]" captionStart="FIGURE 4" captionStartId="6.[151,250,1011,1036]" captionTargetBox="[274,1319,185,979]" captionTargetId="figure@6.[268,1319,181,985]" captionTargetPageId="6" captionText="FIGURE 4. A, lateral view of head of Ophichthus semilunatus sp. nov., NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan; B, arrangement of teeth on maxilla, palatal area; and C, mandible of Ophichthus semilunatus sp. nov. Arrows indicate interorbital (left) and mid-temporal (right) pores." figureDoi="http://doi.org/10.5281/zenodo.3562767" httpUri="https://zenodo.org/record/3562767/files/figure.png" pageId="6" pageNumber="146">Fig. 4A</figureCitation>
).
</paragraph>
<paragraph id="8BA9215CFFAFFFF297BB14E0FBAC2301" blockId="6.[151,1437,1190,2045]" pageId="6" pageNumber="146">Dorsal and anal fins relatively low, ending with a ridge equal to half of snout length; dorsal-fin origin behind pectoral-fin tip by 2.9 times pectoral-fin length, distance between level of gill opening to origin of dorsal fin 1.2 times in HL; caudal fin absent; pectoral fin short, its tip pointed, weakly filamentous.</paragraph>
<paragraph id="8BA9215CFFAFFFF297BB1714FC4E23F5" blockId="6.[151,1437,1190,2045]" pageId="6" pageNumber="146">
Head pores small but obvious; arrangement of sensory pores on head as follows (
<figureCitation id="132D3DD9FFAFFFF293231714FB472365" box="[1119,1210,1586,1612]" captionStart="FIGURE 4" captionStartId="6.[151,250,1011,1036]" captionTargetBox="[274,1319,185,979]" captionTargetId="figure@6.[268,1319,181,985]" captionTargetPageId="6" captionText="FIGURE 4. A, lateral view of head of Ophichthus semilunatus sp. nov., NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan; B, arrangement of teeth on maxilla, palatal area; and C, mandible of Ophichthus semilunatus sp. nov. Arrows indicate interorbital (left) and mid-temporal (right) pores." figureDoi="http://doi.org/10.5281/zenodo.3562767" httpUri="https://zenodo.org/record/3562767/files/figure.png" pageId="6" pageNumber="146">Fig. 4A</figureCitation>
): one + three on supraorbital, no pore above the posterior rim of posterior nostril; three + three on infraorbital, one between anterior and posterior nostrils; six (seven right side) on mandible and two on preopercle; midtemporal and interorbital pores present. Lateral-line pores almost complete,
<quantity id="4CEE8CB9FFAFFFF295E817B8FD3F2391" box="[660,706,1694,1720]" metricMagnitude="-1" metricUnit="m" metricValue="2.032" pageId="6" pageNumber="146" unit="in" value="8.0">8 in</quantity>
branchial basket, 30 anterior to dorsal-fin origin, 65 anterior to anus, and
<quantity id="4CEE8CB9FFAFFFF2967417E7FEB223F5" box="[264,335,1729,1756]" metricMagnitude="0" metricUnit="m" metricValue="4.013199999999999" pageId="6" pageNumber="146" unit="in" value="158.0">158 in</quantity>
total, canal and pores end about 0.9 HL before tail tip.
</paragraph>
<paragraph id="8BA9215CFFAFFFF297BB17C0FEB42244" blockId="6.[151,1437,1190,2045]" pageId="6" pageNumber="146">
Teeth relatively small, conical, pointed, weakly recurved posteriorly; teeth on maxilla triserial, arranged irregularly in posterior part (
<figureCitation id="132D3DD9FFAFFFF296B9162CFDC0220D" box="[453,573,1802,1828]" captionStart="FIGURE 4" captionStartId="6.[151,250,1011,1036]" captionTargetBox="[274,1319,185,979]" captionTargetId="figure@6.[268,1319,181,985]" captionTargetPageId="6" captionText="FIGURE 4. A, lateral view of head of Ophichthus semilunatus sp. nov., NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan; B, arrangement of teeth on maxilla, palatal area; and C, mandible of Ophichthus semilunatus sp. nov. Arrows indicate interorbital (left) and mid-temporal (right) pores." figureDoi="http://doi.org/10.5281/zenodo.3562767" httpUri="https://zenodo.org/record/3562767/files/figure.png" pageId="6" pageNumber="146">Fig. 4B, C</figureCitation>
); mandibular teeth biserial, becoming irregularly triserial, inner teeth slightly larger than outer; vomerine teeth biserial anteriorly and uniserial posteriorly; intermaxillary teeth arranged in a circular pattern.
</paragraph>
<paragraph id="8BA9215CFFAFFFF397BB1650FCA825FE" blockId="6.[151,1437,1190,2045]" lastBlockId="7.[151,1436,153,359]" lastPageId="7" lastPageNumber="147" pageId="6" pageNumber="146">
Coloration in preservative (50% isopropanol) of head and body bicolored, brown dorsolaterally and white ventrally, the border from rictus through insertion of pectoral fin, falling gradually toward end of anal fin; a dark halfmoon-shaped blotch along anterior margin of anus (
<figureCitation id="132D3DD9FFAFFFF295A81698FCD022F1" box="[724,813,1981,2008]" captionStart="FIGURE 5" captionStartId="8.[151,250,1444,1469]" captionTargetBox="[264,1323,181,1417]" captionTargetId="figure@8.[264,1323,181,1417]" captionTargetPageId="8" captionText="FIGURE 5. Enclosed view of anus. A, Ophichthus semilunatus sp. nov., NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan; B, O. megalops (irregular pattern), KAUMI. 125145, 330 mm TL, Dong-gang, Taiwan." figureDoi="http://doi.org/10.5281/zenodo.3562769" httpUri="https://zenodo.org/record/3562769/files/figure.png" pageId="6" pageNumber="146">Fig. 5A</figureCitation>
); tube of anterior nostril brownish but slightly paler than body; tip of lower jaw dusky; sensory pores not marginated. Dorsal fin extremely pale brown with melanophores but not marginated; anal fin pale white, except for a distinct black area around anal fin and base of the fin, its length about half of HL; pectoral fin white with a pale brown margin.
</paragraph>
</subSubSection>
<subSubSection id="C30C72D7FFAEFFF397BB11C6FC862436" pageId="7" pageNumber="147" type="distribution">
<paragraph id="8BA9215CFFAEFFF397BB11C6FC862436" blockId="7.[151,1436,153,359]" pageId="7" pageNumber="147">
<emphasis id="B962FD4EFFAEFFF397BB11C6FE9C25D2" bold="true" box="[199,353,224,251]" pageId="7" pageNumber="147">Distribution.</emphasis>
Known only from the
<typeStatus id="54AD9FFEFFAEFFF3951911C7FD3A25D2" box="[613,711,225,251]" pageId="7" pageNumber="147" type="holotype">holotype</typeStatus>
collected from the northwestern Pacific Ocean, off northeastern
<collectingCountry id="F30161CCFFAEFFF397EB1023FF102436" box="[151,237,261,287]" name="Taiwan" pageId="7" pageNumber="147">Taiwan</collectingCountry>
. Collecting depth unknown but estimated from deepwater.
</paragraph>
</subSubSection>
<subSubSection id="C30C72D7FFAEFFF397BB100FFF262151" pageId="7" pageNumber="147" type="etymology">
<paragraph id="8BA9215CFFAEFFF397BB100FFEBB244E" blockId="7.[151,1436,153,359]" pageId="7" pageNumber="147">
<emphasis id="B962FD4EFFAEFFF397BB100FFEB3246A" bold="true" box="[199,334,297,323]" pageId="7" pageNumber="147">Etymology.</emphasis>
From the Latin,
<emphasis id="B962FD4EFFAEFFF39573100CFDB1246A" box="[527,588,298,323]" italics="true" pageId="7" pageNumber="147">semi-</emphasis>
(half) and
<emphasis id="B962FD4EFFAEFFF395B7100FFCE0246A" box="[715,797,297,323]" italics="true" pageId="7" pageNumber="147">lunatus</emphasis>
(moon), relative to the half-moon blotch on the anterior margin of anus.
</paragraph>
<caption id="DF6971D4FFAEFFF397EB10B2FBDB24FA" ID-Table-UUID="DF6971D4FFAEFFF397EB10B2FBDB24FA" httpUri="http://table.plazi.org/id/DF6971D4FFAEFFF397EB10B2FBDB24FA" pageId="7" pageNumber="147" startId="7.[151,244,404,431]" targetBox="[163,1418,482,1055]" targetIsTable="true" targetPageId="7">
<paragraph id="8BA9215CFFAEFFF397EB10B2FA612486" blockId="7.[151,1436,404,467]" box="[151,1436,404,431]" pageId="7" pageNumber="147">
<emphasis id="B962FD4EFFAEFFF397EB10B2FEEF2486" bold="true" box="[151,274,404,431]" pageId="7" pageNumber="147">TABLE 2.</emphasis>
Information of the number of vertebrae, mandibular (M), preopercular pores (PO) and gill opening to
</paragraph>
<paragraph id="8BA9215CFFAEFFF397EB109FFBDB24FA" blockId="7.[151,1436,404,467]" box="[151,1062,441,467]" pageId="7" pageNumber="147">
dorsal-fin origin (GDO) for nine species of
<taxonomicName id="4C165ADFFFAEFFF395FC109FFCFC24FA" authorityName="Ahl" authorityYear="1789" box="[640,769,441,467]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="genus">
<emphasis id="B962FD4EFFAEFFF395FC109FFCFC24FA" box="[640,769,441,467]" italics="true" pageId="7" pageNumber="147">Ophichthus</emphasis>
</taxonomicName>
with dark-tipped anal fin.
</paragraph>
</caption>
<paragraph id="8BA9215CFFAEFFF397DF10C4FAA32136" pageId="7" pageNumber="147">
<table id="F916D3FCFFAE000B97DF10C4FA772136" box="[163,1418,482,1055]" gridcols="8" gridrows="10" pageId="7" pageNumber="147">
<tr id="3526231EFFAE000B97DF10C4FA7724D2" box="[163,1418,482,507]" gridrow="0" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF10C4FE7224D2" box="[163,399,482,507]" gridcol="0" gridrow="0" pageId="7" pageNumber="147">Scientific name</th>
<th id="76F74A62FFAE000B96C610C4FDCF24D2" box="[442,562,482,507]" gridcol="1" gridrow="0" pageId="7" pageNumber="147">Holotype</th>
<th id="76F74A62FFAE000B951D10C4FD3624D2" box="[609,715,482,507]" gridcol="2" gridrow="0" pageId="7" pageNumber="147">MVF</th>
<th id="76F74A62FFAE000B958610C4FCAE24D2" box="[762,851,482,507]" gridcol="3" gridrow="0" pageId="7" pageNumber="147">Range</th>
<th id="76F74A62FFAE000B940710C4FC4B24D2" box="[891,950,482,507]" gridcol="4" gridrow="0" pageId="7" pageNumber="147">M</th>
<th id="76F74A62FFAE000B94AF10C4FC0E24D2" box="[979,1011,482,507]" gridcol="5" gridrow="0" pageId="7" pageNumber="147">PO</th>
<th id="76F74A62FFAE000B936910C4FB8824D2" box="[1045,1141,482,507]" gridcol="6" gridrow="0" pageId="7" pageNumber="147">GDO/HL</th>
<th id="76F74A62FFAE000B93EB10C4FA7724D2" box="[1175,1418,482,507]" gridcol="7" gridrow="0" pageId="7" pageNumber="147">Distribution</th>
</tr>
<tr id="3526231EFFAE000B97DF1334FA772761" box="[163,1418,530,584]" gridrow="1" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF1334FE722761" box="[163,399,530,584]" gridcol="0" gridrow="1" pageId="7" pageNumber="147">
<taxonomicName id="4C165ADFFFAEFFF397DF1335FEE12761" authority="Hibino &amp; Chiu &amp; Chen &amp; Shao, 2019" authorityName="Hibino &amp; Chiu &amp; Chen &amp; Shao" authorityYear="2019" box="[163,284,531,584]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="semilunatus" status="sp. nov.">
<emphasis id="B962FD4EFFAEFFF397DF1335FEE12761" box="[163,284,531,584]" italics="true" pageId="7" pageNumber="147">Ophichthus semilunatus</emphasis>
</taxonomicName>
<emphasis id="B962FD4EFFAEFFF3965E1316FE8F2761" bold="true" box="[290,370,560,584]" pageId="7" pageNumber="147">
<taxonomicNameLabel id="A2514035FFAEFFF3965E1316FE8F2761" box="[290,370,560,584]" pageId="7" pageNumber="147" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</th>
<td id="76F74A62FFAE000B96C61334FDCF2761" box="[442,562,530,584]" gridcol="1" gridrow="1" pageId="7" pageNumber="147">29/64/176</td>
<td id="76F74A62FFAE000B951D1334FD362761" box="[609,715,530,584]" gridcol="2" gridrow="1" pageId="7" pageNumber="147">29-64-176</td>
<td id="76F74A62FFAE000B95861334FCAE2761" box="[762,851,530,584]" gridcol="3" gridrow="1" pageId="7" pageNumber="147">-</td>
<td id="76F74A62FFAE000B94071334FC4B2761" box="[891,950,530,584]" gridcol="4" gridrow="1" pageId="7" pageNumber="147">7</td>
<td id="76F74A62FFAE000B94AF1334FC0E2761" box="[979,1011,530,584]" gridcol="5" gridrow="1" pageId="7" pageNumber="147">2</td>
<td id="76F74A62FFAE000B93691334FB882761" box="[1045,1141,530,584]" gridcol="6" gridrow="1" pageId="7" pageNumber="147">1.2</td>
<td id="76F74A62FFAE000B93EB1334FA772761" box="[1175,1418,530,584]" gridcol="7" gridrow="1" pageId="7" pageNumber="147">Taiwan</td>
</tr>
<tr id="3526231EFFAE000B97DF137EFA7727A7" box="[163,1418,600,654]" gridrow="2" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF137EFE7227A7" box="[163,399,600,654]" gridcol="0" gridrow="2" pageId="7" pageNumber="147">
<taxonomicName id="4C165ADFFFAEFFF397DF137EFED427A7" authority="Hibino &amp; Chiu &amp; Chen &amp; Shao, 2019" authorityName="Hibino &amp; Chiu &amp; Chen &amp; Shao" authorityYear="2019" box="[163,297,600,654]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="brevidorsalis" status="sp. nov.">
<emphasis id="B962FD4EFFAEFFF397DF137EFED427A7" box="[163,297,600,654]" italics="true" pageId="7" pageNumber="147">Ophichthus brevidorsalis</emphasis>
</taxonomicName>
<emphasis id="B962FD4EFFAEFFF396531350FE8227A7" bold="true" box="[303,383,630,654]" pageId="7" pageNumber="147">
<taxonomicNameLabel id="A2514035FFAEFFF396531350FE8227A7" box="[303,383,630,654]" pageId="7" pageNumber="147" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</th>
<td id="76F74A62FFAE000B96C6137EFDCF27A7" box="[442,562,600,654]" gridcol="1" gridrow="2" pageId="7" pageNumber="147">43/61/164</td>
<td id="76F74A62FFAE000B951D137EFD3627A7" box="[609,715,600,654]" gridcol="2" gridrow="2" pageId="7" pageNumber="147">43-61-164</td>
<td id="76F74A62FFAE000B9586137EFCAE27A7" box="[762,851,600,654]" gridcol="3" gridrow="2" pageId="7" pageNumber="147">-</td>
<td id="76F74A62FFAE000B9407137EFC4B27A7" box="[891,950,600,654]" gridcol="4" gridrow="2" pageId="7" pageNumber="147">6 or 7</td>
<td id="76F74A62FFAE000B94AF137EFC0E27A7" box="[979,1011,600,654]" gridcol="5" gridrow="2" pageId="7" pageNumber="147">2</td>
<td id="76F74A62FFAE000B9369137EFB8827A7" box="[1045,1141,600,654]" gridcol="6" gridrow="2" pageId="7" pageNumber="147">ca. 2.2</td>
<td id="76F74A62FFAE000B93EB137EFA7727A7" box="[1175,1418,600,654]" gridcol="7" gridrow="2" pageId="7" pageNumber="147">New Caledonia</td>
</tr>
<tr id="3526231EFFAE000B97DF13BBFA7727FA" box="[163,1418,669,723]" gridrow="3" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF13BBFE7227FA" box="[163,399,669,723]" gridcol="0" gridrow="3" pageId="7" pageNumber="147">
<taxonomicName id="4C165ADFFFAEFFF397DF13B8FED127FA" authorityName="McCosker" authorityYear="2010" box="[163,300,670,723]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="aniptocheilos">
<emphasis id="B962FD4EFFAEFFF397DF13B8FED127FA" box="[163,300,670,723]" italics="true" pageId="7" pageNumber="147">Ophichthus aniptocheilos</emphasis>
</taxonomicName>
</th>
<td id="76F74A62FFAE000B96C613BBFDCF27FA" box="[442,562,669,723]" gridcol="1" gridrow="3" pageId="7" pageNumber="147">16/59/140</td>
<td id="76F74A62FFAE000B951D13BBFD3627FA" box="[609,715,669,723]" gridcol="2" gridrow="3" pageId="7" pageNumber="147">16-59-140</td>
<td id="76F74A62FFAE000B958613BBFCAE27FA" box="[762,851,669,723]" gridcol="3" gridrow="3" pageId="7" pageNumber="147">-</td>
<td id="76F74A62FFAE000B940713BBFC4B27FA" box="[891,950,669,723]" gridcol="4" gridrow="3" pageId="7" pageNumber="147">6</td>
<td id="76F74A62FFAE000B94AF13BBFC0E27FA" box="[979,1011,669,723]" gridcol="5" gridrow="3" pageId="7" pageNumber="147">2</td>
<td id="76F74A62FFAE000B936913BBFB8827FA" box="[1045,1141,669,723]" gridcol="6" gridrow="3" pageId="7" pageNumber="147">0</td>
<td id="76F74A62FFAE000B93EB13BBFA7727FA" box="[1175,1418,669,723]" gridcol="7" gridrow="3" pageId="7" pageNumber="147">Tonga</td>
</tr>
<tr id="3526231EFFAE000B97DF13C5FA772630" box="[163,1418,739,793]" gridrow="4" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF13C5FE722630" box="[163,399,739,793]" gridcol="0" gridrow="4" pageId="7" pageNumber="147">
<taxonomicName id="4C165ADFFFAEFFF397DF13C2FEAF2630" box="[163,338,740,793]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="brachinotopterus">
<emphasis id="B962FD4EFFAEFFF397DF13C2FEAF2630" box="[163,338,740,793]" italics="true" pageId="7" pageNumber="147">Ophichthus brachinotopterus</emphasis>
</taxonomicName>
</th>
<td id="76F74A62FFAE000B96C613C5FDCF2630" box="[442,562,739,793]" gridcol="1" gridrow="4" pageId="7" pageNumber="147">No information</td>
<td id="76F74A62FFAE000B951D13C5FD362630" box="[609,715,739,793]" gridcol="2" gridrow="4" pageId="7" pageNumber="147">25-60-172</td>
<td id="76F74A62FFAE000B958613C5FCAE2630" box="[762,851,739,793]" gridcol="3" gridrow="4" pageId="7" pageNumber="147">167178</td>
<td id="76F74A62FFAE000B940713C5FC4B2630" box="[891,950,739,793]" gridcol="4" gridrow="4" pageId="7" pageNumber="147">6</td>
<td id="76F74A62FFAE000B94AF13C5FC0E2630" box="[979,1011,739,793]" gridcol="5" gridrow="4" pageId="7" pageNumber="147">2</td>
<td id="76F74A62FFAE000B936913C5FB882630" box="[1045,1141,739,793]" gridcol="6" gridrow="4" pageId="7" pageNumber="147">ca. 1</td>
<td id="76F74A62FFAE000B93EB13C5FA772630" box="[1175,1418,739,793]" gridcol="7" gridrow="4" pageId="7" pageNumber="147">Madagascar, New Caledonia, and Vanuatu</td>
</tr>
<tr id="3526231EFFAE000B97DF120EFA772668" box="[163,1418,808,833]" gridrow="5" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF120EFE722668" box="[163,399,808,833]" gridcol="0" gridrow="5" pageId="7" pageNumber="147">
<taxonomicName id="4C165ADFFFAEFFF397DF120FFE932668" authorityName="McCosker" authorityYear="1999" box="[163,366,809,833]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="exourus">
<emphasis id="B962FD4EFFAEFFF397DF120FFE932668" box="[163,366,809,833]" italics="true" pageId="7" pageNumber="147">Ophichthus exourus</emphasis>
</taxonomicName>
</th>
<td id="76F74A62FFAE000B96C6120EFDCF2668" box="[442,562,808,833]" gridcol="1" gridrow="5" pageId="7" pageNumber="147">20/61/176</td>
<td id="76F74A62FFAE000B951D120EFD362668" box="[609,715,808,833]" gridcol="2" gridrow="5" pageId="7" pageNumber="147">20-60-177</td>
<td id="76F74A62FFAE000B9586120EFCAE2668" box="[762,851,808,833]" gridcol="3" gridrow="5" pageId="7" pageNumber="147">173177</td>
<td id="76F74A62FFAE000B9407120EFC4B2668" box="[891,950,808,833]" gridcol="4" gridrow="5" pageId="7" pageNumber="147">6 or 7</td>
<td id="76F74A62FFAE000B94AF120EFC0E2668" box="[979,1011,808,833]" gridcol="5" gridrow="5" pageId="7" pageNumber="147">2</td>
<td id="76F74A62FFAE000B9369120EFB882668" box="[1045,1141,808,833]" gridcol="6" gridrow="5" pageId="7" pageNumber="147">&lt;1</td>
<td id="76F74A62FFAE000B93EB120EFA772668" box="[1175,1418,808,833]" gridcol="7" gridrow="5" pageId="7" pageNumber="147">New Caledonia</td>
</tr>
<tr id="3526231EFFAE000B97DF127EFA772658" box="[163,1418,856,881]" gridrow="6" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF127EFE722658" box="[163,399,856,881]" gridcol="0" gridrow="6" pageId="7" pageNumber="147">
<taxonomicName id="4C165ADFFFAEFFF397DF127FFE8D2658" authorityName="McCosker" authorityYear="1979" box="[163,368,857,881]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="kunaloa">
<emphasis id="B962FD4EFFAEFFF397DF127FFE8D2658" box="[163,368,857,881]" italics="true" pageId="7" pageNumber="147">Ophichthus kunaloa</emphasis>
</taxonomicName>
</th>
<td id="76F74A62FFAE000B96C6127EFDCF2658" box="[442,562,856,881]" gridcol="1" gridrow="6" pageId="7" pageNumber="147">15/66/185</td>
<td id="76F74A62FFAE000B951D127EFD362658" box="[609,715,856,881]" gridcol="2" gridrow="6" pageId="7" pageNumber="147">15-66-182</td>
<td id="76F74A62FFAE000B9586127EFCAE2658" box="[762,851,856,881]" gridcol="3" gridrow="6" pageId="7" pageNumber="147">180185</td>
<td id="76F74A62FFAE000B9407127EFC4B2658" box="[891,950,856,881]" gridcol="4" gridrow="6" pageId="7" pageNumber="147">5</td>
<td id="76F74A62FFAE000B94AF127EFC0E2658" box="[979,1011,856,881]" gridcol="5" gridrow="6" pageId="7" pageNumber="147">2</td>
<td id="76F74A62FFAE000B9369127EFB882658" box="[1045,1141,856,881]" gridcol="6" gridrow="6" pageId="7" pageNumber="147">&lt;1</td>
<td id="76F74A62FFAE000B93EB127EFA772658" box="[1175,1418,856,881]" gridcol="7" gridrow="6" pageId="7" pageNumber="147">Hawaii Island</td>
</tr>
<tr id="3526231EFFAE000B97DF12AEFA772688" box="[163,1418,904,929]" gridrow="7" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF12AEFE722688" box="[163,399,904,929]" gridcol="0" gridrow="7" pageId="7" pageNumber="147">
<taxonomicName id="4C165ADFFFAEFFF397DF12AFFE822688" authorityName="Asano" authorityYear="1987" box="[163,383,905,929]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="megalops">
<emphasis id="B962FD4EFFAEFFF397DF12AFFE822688" box="[163,383,905,929]" italics="true" pageId="7" pageNumber="147">Ophichthus megalops</emphasis>
</taxonomicName>
</th>
<td id="76F74A62FFAE000B96C612AEFDCF2688" box="[442,562,904,929]" gridcol="1" gridrow="7" pageId="7" pageNumber="147">29/60/160</td>
<td id="76F74A62FFAE000B951D12AEFD362688" box="[609,715,904,929]" gridcol="2" gridrow="7" pageId="7" pageNumber="147">31-61-164</td>
<td id="76F74A62FFAE000B958612AEFCAE2688" box="[762,851,904,929]" gridcol="3" gridrow="7" pageId="7" pageNumber="147">157168</td>
<td id="76F74A62FFAE000B940712AEFC4B2688" box="[891,950,904,929]" gridcol="4" gridrow="7" pageId="7" pageNumber="147">6</td>
<td id="76F74A62FFAE000B94AF12AEFC0E2688" box="[979,1011,904,929]" gridcol="5" gridrow="7" pageId="7" pageNumber="147">3</td>
<td id="76F74A62FFAE000B936912AEFB882688" box="[1045,1141,904,929]" gridcol="6" gridrow="7" pageId="7" pageNumber="147">1.21.5</td>
<td id="76F74A62FFAE000B93EB12AEFA772688" box="[1175,1418,904,929]" gridcol="7" gridrow="7" pageId="7" pageNumber="147">Japan and Taiwan</td>
</tr>
<tr id="3526231EFFAE000B97DF129EFA7726F8" box="[163,1418,952,977]" gridrow="8" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF129EFE7226F8" box="[163,399,952,977]" gridcol="0" gridrow="8" pageId="7" pageNumber="147">
<taxonomicName id="4C165ADFFFAEFFF397DF129FFE7226F8" authorityName="McCosker" authorityYear="1999" box="[163,399,953,977]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="mystacinus">
<emphasis id="B962FD4EFFAEFFF397DF129FFE7226F8" box="[163,399,953,977]" italics="true" pageId="7" pageNumber="147">Ophichthus mystacinus</emphasis>
</taxonomicName>
</th>
<td id="76F74A62FFAE000B96C6129EFDCF26F8" box="[442,562,952,977]" gridcol="1" gridrow="8" pageId="7" pageNumber="147">35/62/174</td>
<td id="76F74A62FFAE000B951D129EFD3626F8" box="[609,715,952,977]" gridcol="2" gridrow="8" pageId="7" pageNumber="147">34-61-170</td>
<td id="76F74A62FFAE000B9586129EFCAE26F8" box="[762,851,952,977]" gridcol="3" gridrow="8" pageId="7" pageNumber="147">162177</td>
<td id="76F74A62FFAE000B9407129EFC4B26F8" box="[891,950,952,977]" gridcol="4" gridrow="8" pageId="7" pageNumber="147">6</td>
<td id="76F74A62FFAE000B94AF129EFC0E26F8" box="[979,1011,952,977]" gridcol="5" gridrow="8" pageId="7" pageNumber="147">2</td>
<td id="76F74A62FFAE000B9369129EFB8826F8" box="[1045,1141,952,977]" gridcol="6" gridrow="8" pageId="7" pageNumber="147">ca. 1.2</td>
<td id="76F74A62FFAE000B93EB129EFA7726F8" box="[1175,1418,952,977]" gridcol="7" gridrow="8" pageId="7" pageNumber="147">New Caledonia</td>
</tr>
<tr id="3526231EFFAE000B97DF12CEFA772136" box="[163,1418,1000,1055]" gridrow="9" pageId="7" pageNumber="147">
<th id="76F74A62FFAE000B97DF12CEFE722136" box="[163,399,1000,1055]" gridcol="0" gridrow="9" pageId="7" pageNumber="147">
<taxonomicName id="4C165ADFFFAEFFF397DF12CFFEA22128" authorityName="McCosker" authorityYear="2010" box="[163,351,1001,1025]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="tomioi">
<emphasis id="B962FD4EFFAEFFF397DF12CFFEA22128" box="[163,351,1001,1025]" italics="true" pageId="7" pageNumber="147">Ophichthus tomioi</emphasis>
</taxonomicName>
</th>
<td id="76F74A62FFAE000B96C612CEFDCF2136" box="[442,562,1000,1055]" gridcol="1" gridrow="9" pageId="7" pageNumber="147">16/62/169</td>
<td id="76F74A62FFAE000B951D12CEFD362136" box="[609,715,1000,1055]" gridcol="2" gridrow="9" pageId="7" pageNumber="147">16-62-169</td>
<td id="76F74A62FFAE000B958612CEFCAE2136" box="[762,851,1000,1055]" gridcol="3" gridrow="9" pageId="7" pageNumber="147">166189</td>
<td id="76F74A62FFAE000B940712CEFC4B2136" box="[891,950,1000,1055]" gridcol="4" gridrow="9" pageId="7" pageNumber="147">6 or 7</td>
<td id="76F74A62FFAE000B94AF12CEFC0E2136" box="[979,1011,1000,1055]" gridcol="5" gridrow="9" pageId="7" pageNumber="147">2</td>
<td id="76F74A62FFAE000B936912CEFB882136" box="[1045,1141,1000,1055]" gridcol="6" gridrow="9" pageId="7" pageNumber="147">&lt;1</td>
<td id="76F74A62FFAE000B93EB12CEFA772136" box="[1175,1418,1000,1055]" gridcol="7" gridrow="9" pageId="7" pageNumber="147">Philippines, Marquesas, Fiji, Seychelles</td>
</tr>
</table>
</paragraph>
<paragraph id="8BA9215CFFAEFFF397EB151CFF262151" blockId="7.[151,1437,1082,1144]" pageId="7" pageNumber="147">
The table is based on Karreir (1983),
<bibRefCitation id="EF875CADFFAEFFF39547151DFD2B217C" author="Asano, H." box="[571,726,1083,1109]" pageId="7" pageNumber="147" pagination="135 - 137" refId="ref7057" refString="Asano, H. (1987) A new ophichthid eel, Ophichthus megalops, from the Kumano-nada, Japan. Japanese Journal of Ichthyology, 34, 135 - 137. https: // doi. org / 10.1007 / BF 02912407" type="journal article" year="1987">Asano (1987)</bibRefCitation>
,
<bibRefCitation id="EF875CADFFAEFFF3959F151CFC5E217C" author="McCosker, J. E." box="[739,931,1082,1109]" pageId="7" pageNumber="147" pagination="571 - 588" refId="ref7702" refString="McCosker, J. E. (1999) Pisces Anguilliformes: Deepwater snake eels (Ophichthidae) from the New Caledonia region, Southwest Pacific Ocean. In: Crosnier, A. (Ed.) Resultats des Campagnes MUSORSTOM Vol. 20. Memoires du Museum national d'Histoire naturelle, 180, 571 - 588." type="journal article" year="1999">McCosker (1999</bibRefCitation>
,
<bibRefCitation id="EF875CADFFAEFFF394D2151DFC17217C" author="McCosker, J. E." box="[942,1002,1083,1109]" pageId="7" pageNumber="147" pagination="1 - 39" refId="ref7761" refString="McCosker, J. E. (2010) Deepwater Indo-Pacific species of the snake-eel genus Ophichthus (Anguilliformes: Ophichthidae), with the description of nine new species. Zootaxa, 2505 (1), 1 - 39. https: // doi. org / 10.11646 / zootaxa. 2505.1.1" type="journal article" year="2010">2010</bibRefCitation>
),
<bibRefCitation id="EF875CADFFAEFFF39481151CFB1F217C" author="Tashiro, F. &amp; Hibino, Y. &amp; Miyamoto, K." box="[1021,1250,1082,1109]" pageId="7" pageNumber="147" pagination="213 - 217" refId="ref7924" refString="Tashiro, F., Hibino, Y. &amp; Miyamoto, K. (2017) First records of the rare snake eel Ophichthus exourus (Pisces: Anguilliformes: Ophichthidae) from the Northern hemisphere. Species Diversity, 22 (2), 213 - 217. https: // doi. org / 10.12782 / specdiv. 22.213" type="journal article" year="2017">
Tashiro
<emphasis id="B962FD4EFFAEFFF39324151DFB6D217D" box="[1112,1168,1082,1108]" italics="true" pageId="7" pageNumber="147">et al.</emphasis>
(2017)
</bibRefCitation>
and present materials
</paragraph>
</subSubSection>
<subSubSection id="C30C72D7FFAEFFF397BB15EDFEF32260" pageId="7" pageNumber="147" type="discussion">
<paragraph id="8BA9215CFFAEFFF397BB15EDFEF32260" blockId="7.[151,1437,1226,1865]" pageId="7" pageNumber="147">
<emphasis id="B962FD4EFFAEFFF397BB15EDFEC621CC" bold="true" box="[199,315,1227,1253]" pageId="7" pageNumber="147">Remarks.</emphasis>
The new species has the characteristic coloration of a black tip on the anal fin. The character is shared only in seven known congeners.
<tableCitation id="C69414E7FFAEFFF3957015C8FD9D2020" box="[524,608,1262,1289]" captionStart="TABLE 1" captionStartId="2.[151,244,152,179]" captionTargetBox="[163,1412,231,1832]" captionText="TABLE 1. Measurements (%) and counts of Ophichthus megalops, O. semilunatus sp. nov. and O. brevidorsalis sp. nov." httpUri="http://table.plazi.org/id/DF6971D4FFABFFF697EB11BEFF0C25FE" pageId="7" pageNumber="147" tableUuid="DF6971D4FFABFFF697EB11BEFF0C25FE">Table 1</tableCitation>
shows the selected characters separating the black anal-fin tip species of
<taxonomicName id="4C165ADFFFAEFFF397EB1434FEE52005" authorityName="Ahl" authorityYear="1789" box="[151,280,1298,1324]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="genus">
<emphasis id="B962FD4EFFAEFFF397EB1434FEE52005" box="[151,280,1298,1324]" italics="true" pageId="7" pageNumber="147">Ophichthus</emphasis>
</taxonomicName>
. The shape of the snout is similar to
<taxonomicName id="4C165ADFFFAEFFF395C41435FC082004" authority="McCosker, 1979" authorityName="McCosker" authorityYear="1979" box="[696,1013,1298,1325]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="kunaloa">
<emphasis id="B962FD4EFFAEFFF395C41435FCC92005" box="[696,820,1298,1325]" italics="true" pageId="7" pageNumber="147">O. kunaloa</emphasis>
McCosker, 1979
</taxonomicName>
and
<taxonomicName id="4C165ADFFFAEFFF393501435FAAA2004" authority="McCosker, 2010" authorityName="McCosker" authorityYear="2010" box="[1068,1367,1298,1325]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="tomioi">
<emphasis id="B962FD4EFFAEFFF393501435FB6A2005" box="[1068,1175,1299,1325]" italics="true" pageId="7" pageNumber="147">O. tomioi</emphasis>
<bibRefCitation id="EF875CADFFAEFFF393E21434FAAA2004" author="McCosker, J. E." box="[1182,1367,1298,1325]" pageId="7" pageNumber="147" pagination="1 - 39" refId="ref7761" refString="McCosker, J. E. (2010) Deepwater Indo-Pacific species of the snake-eel genus Ophichthus (Anguilliformes: Ophichthidae), with the description of nine new species. Zootaxa, 2505 (1), 1 - 39. https: // doi. org / 10.11646 / zootaxa. 2505.1.1" type="journal article" year="2010">McCosker, 2010</bibRefCitation>
</taxonomicName>
but is easily discerned from the species by the position of dorsal-fin origin (well behind pectoral-fin tip in
<taxonomicName id="4C165ADFFFAEFFF393881411FA612079" authority="Hibino &amp; Chiu &amp; Chen &amp; Shao, 2019" authorityName="Hibino &amp; Chiu &amp; Chen &amp; Shao" authorityYear="2019" box="[1268,1436,1334,1361]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="semilunatus" status="sp. nov.">
<emphasis id="B962FD4EFFAEFFF393881411FA612079" box="[1268,1436,1334,1361]" italics="true" pageId="7" pageNumber="147">O. semilunatus</emphasis>
</taxonomicName>
<emphasis id="B962FD4EFFAEFFF397EB147DFF0D205C" bold="true" box="[151,240,1371,1397]" pageId="7" pageNumber="147">
<taxonomicNameLabel id="A2514035FFAEFFF397EB147DFF0D205C" box="[151,240,1371,1397]" pageId="7" pageNumber="147" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
vs. not behind in
<taxonomicName id="4C165ADFFFAEFFF396C9147DFDCD205D" authorityName="McCosker" authorityYear="1979" box="[437,560,1370,1397]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="kunaloa">
<emphasis id="B962FD4EFFAEFFF396C9147DFDCD205D" box="[437,560,1370,1397]" italics="true" pageId="7" pageNumber="147">O. kunaloa</emphasis>
</taxonomicName>
and
<taxonomicName id="4C165ADFFFAEFFF39519147DFD32205D" authorityName="McCosker" authorityYear="2010" box="[613,719,1371,1397]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="tomioi">
<emphasis id="B962FD4EFFAEFFF39519147DFD32205D" box="[613,719,1371,1397]" italics="true" pageId="7" pageNumber="147">O. tomioi</emphasis>
</taxonomicName>
). The position of the dorsal-fin origin of the new species is characteristic, having more predorsal vertebrae than other black anal-fin species except
<taxonomicName id="4C165ADFFFAEFFF393471459FB3520B1" authorityName="Asano" authorityYear="1987" box="[1083,1224,1406,1433]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="megalops">
<emphasis id="B962FD4EFFAEFFF393471459FB3520B1" box="[1083,1224,1406,1433]" italics="true" pageId="7" pageNumber="147">O. megalops</emphasis>
</taxonomicName>
and
<taxonomicName id="4C165ADFFFAEFFF393821459FA6120B1" authorityName="McCosker" authorityYear="1999" box="[1278,1436,1407,1433]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="mystacinus">
<emphasis id="B962FD4EFFAEFFF393821459FA6120B1" box="[1278,1436,1407,1433]" italics="true" pageId="7" pageNumber="147">O. mystacinus</emphasis>
</taxonomicName>
(
<quantity id="4CEE8CB9FFAEFFF397E31485FF252095" box="[159,216,1442,1469]" metricMagnitude="-1" metricUnit="m" metricValue="7.366" pageId="7" pageNumber="147" unit="in" value="29.0">29 in</quantity>
<taxonomicName id="4C165ADFFFAEFFF397A21485FE782095" authority="Hibino &amp; Chiu &amp; Chen &amp; Shao, 2019" authorityName="Hibino &amp; Chiu &amp; Chen &amp; Shao" authorityYear="2019" box="[222,389,1442,1469]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="semilunatus" status="sp. nov.">
<emphasis id="B962FD4EFFAEFFF397A21485FE782095" box="[222,389,1442,1469]" italics="true" pageId="7" pageNumber="147">O. semilunatus</emphasis>
</taxonomicName>
<emphasis id="B962FD4EFFAEFFF396F71485FE192094" bold="true" box="[395,484,1443,1469]" pageId="7" pageNumber="147">
<taxonomicNameLabel id="A2514035FFAEFFF396F71485FE192094" box="[395,484,1443,1469]" pageId="7" pageNumber="147" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
vs.
<quantity id="4CEE8CB9FFAEFFF395731484FD8C2095" box="[527,625,1442,1469]" metricMagnitude="-1" metricUnit="m" metricValue="5.334" metricValueMax="6.858" metricValueMin="3.81" pageId="7" pageNumber="147" unit="in" value="21.0" valueMax="27.0" valueMin="15.0">1527 in</quantity>
<taxonomicName id="4C165ADFFFAEFFF3950B1485FC0C2094" authority="McCosker, 2010" authorityName="McCosker" authorityYear="2010" box="[631,1009,1442,1469]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="aniptocheilos">
<emphasis id="B962FD4EFFAEFFF3950B1485FCD22095" box="[631,815,1442,1469]" italics="true" pageId="7" pageNumber="147">O. aniptocheilos</emphasis>
<bibRefCitation id="EF875CADFFAEFFF394491484FC0C2094" author="McCosker, J. E." box="[821,1009,1442,1469]" pageId="7" pageNumber="147" pagination="1 - 39" refId="ref7761" refString="McCosker, J. E. (2010) Deepwater Indo-Pacific species of the snake-eel genus Ophichthus (Anguilliformes: Ophichthidae), with the description of nine new species. Zootaxa, 2505 (1), 1 - 39. https: // doi. org / 10.11646 / zootaxa. 2505.1.1" type="journal article" year="2010">McCosker, 2010</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="4C165ADFFFAEFFF394871485FA8A2094" authority="Karrer, 1982" authorityName="Karrer" authorityYear="1982" box="[1019,1399,1442,1469]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="brachynotopterus">
<emphasis id="B962FD4EFFAEFFF394871485FB1F2095" box="[1019,1250,1442,1469]" italics="true" pageId="7" pageNumber="147">O. brachynotopterus</emphasis>
Karrer, 1982
</taxonomicName>
,
<taxonomicName id="4C165ADFFFAEFFF392FD1485FE4E20C8" authority="McCosker, 1999" authorityName="McCosker" authorityYear="1999" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="exourus">
<emphasis id="B962FD4EFFAEFFF392FD1485FF0D20C9" italics="true" pageId="7" pageNumber="147">O. exourus</emphasis>
<bibRefCitation id="EF875CADFFAEFFF3978B14E0FE4E20C8" author="McCosker, J. E." box="[247,435,1478,1505]" pageId="7" pageNumber="147" pagination="571 - 588" refId="ref7702" refString="McCosker, J. E. (1999) Pisces Anguilliformes: Deepwater snake eels (Ophichthidae) from the New Caledonia region, Southwest Pacific Ocean. In: Crosnier, A. (Ed.) Resultats des Campagnes MUSORSTOM Vol. 20. Memoires du Museum national d'Histoire naturelle, 180, 571 - 588." type="journal article" year="1999">McCosker, 1999</bibRefCitation>
</taxonomicName>
,
<taxonomicName id="4C165ADFFFAEFFF396C214E1FDC720C9" authorityName="McCosker" authorityYear="1979" box="[446,570,1478,1505]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="kunaloa">
<emphasis id="B962FD4EFFAEFFF396C214E1FDC720C9" box="[446,570,1478,1505]" italics="true" pageId="7" pageNumber="147">O. kunaloa</emphasis>
</taxonomicName>
, and
<taxonomicName id="4C165ADFFFAEFFF3950B14E1FD1C20C9" authorityName="McCosker" authorityYear="2010" box="[631,737,1479,1505]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="tomioi">
<emphasis id="B962FD4EFFAEFFF3950B14E1FD1C20C9" box="[631,737,1479,1505]" italics="true" pageId="7" pageNumber="147">O. tomioi</emphasis>
</taxonomicName>
) (
<tableCitation id="C69414E7FFAEFFF3958414E0FCB320C8" box="[760,846,1478,1505]" captionStart="TABLE 2" captionStartId="7.[151,244,404,431]" captionTargetBox="[163,1418,482,1055]" captionText="TABLE 2. Information of the number of vertebrae, mandibular (M), preopercular pores (PO) and gill opening to dorsal-fin origin (GDO) for nine species of Ophichthus with dark-tipped anal fin." httpUri="http://table.plazi.org/id/DF6971D4FFAEFFF397EB10B2FBDB24FA" pageId="7" pageNumber="147" tableUuid="DF6971D4FFAEFFF397EB10B2FBDB24FA">Table 2</tableCitation>
), from
<taxonomicName id="4C165ADFFFAEFFF394DC14E1FBC320C9" authorityName="McCosker" authorityYear="1999" box="[928,1086,1479,1505]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="mystacinus">
<emphasis id="B962FD4EFFAEFFF394DC14E1FBC320C9" box="[928,1086,1479,1505]" italics="true" pageId="7" pageNumber="147">O. mystacinus</emphasis>
</taxonomicName>
, having a shorter snout (19.0% HL vs. 22.728.0%), larger eyes (17.7% HL vs. 11.014.1%), one + three supraorbital pores (vs. one + four), and a shorter pectoral-fin (30.8% HL vs. 39.245.8%) (
<bibRefCitation id="EF875CADFFAEFFF3959C1728FC672300" author="McCosker, J. E." box="[736,922,1550,1577]" pageId="7" pageNumber="147" pagination="571 - 588" refId="ref7702" refString="McCosker, J. E. (1999) Pisces Anguilliformes: Deepwater snake eels (Ophichthidae) from the New Caledonia region, Southwest Pacific Ocean. In: Crosnier, A. (Ed.) Resultats des Campagnes MUSORSTOM Vol. 20. Memoires du Museum national d'Histoire naturelle, 180, 571 - 588." type="journal article" year="1999">McCosker 1999</bibRefCitation>
;
<bibRefCitation id="EF875CADFFAEFFF394D41729FC192300" author="McCosker, J. E." box="[936,996,1551,1577]" pageId="7" pageNumber="147" pagination="1 - 39" refId="ref7761" refString="McCosker, J. E. (2010) Deepwater Indo-Pacific species of the snake-eel genus Ophichthus (Anguilliformes: Ophichthidae), with the description of nine new species. Zootaxa, 2505 (1), 1 - 39. https: // doi. org / 10.11646 / zootaxa. 2505.1.1" type="journal article" year="2010">2010</bibRefCitation>
;
<bibRefCitation id="EF875CADFFAEFFF3948C1728FB312300" author="Tashiro, F. &amp; Hibino, Y. &amp; Miyamoto, K." box="[1008,1228,1550,1577]" pageId="7" pageNumber="147" pagination="213 - 217" refId="ref7924" refString="Tashiro, F., Hibino, Y. &amp; Miyamoto, K. (2017) First records of the rare snake eel Ophichthus exourus (Pisces: Anguilliformes: Ophichthidae) from the Northern hemisphere. Species Diversity, 22 (2), 213 - 217. https: // doi. org / 10.12782 / specdiv. 22.213" type="journal article" year="2017">
Tashiro
<emphasis id="B962FD4EFFAEFFF393301729FB7B2301" box="[1100,1158,1550,1576]" italics="true" pageId="7" pageNumber="147">et al.</emphasis>
2017
</bibRefCitation>
). The new species closely resembles
<taxonomicName id="4C165ADFFFAEFFF3961F1715FE122365" authorityName="Asano" authorityYear="1987" box="[355,495,1586,1613]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="megalops">
<emphasis id="B962FD4EFFAEFFF3961F1715FE122365" box="[355,495,1586,1613]" italics="true" pageId="7" pageNumber="147">O. megalops</emphasis>
</taxonomicName>
in the position of the dorsal-fin origin, counts of predorsal and preanal vertebrae, the shape of the posterior nostril, the shape of the pectoral fin and coloration of the anal fin with a black tip, resulting in the
<typeStatus id="54AD9FFEFFAEFFF397A0175CFEC323BD" box="[220,318,1658,1684]" pageId="7" pageNumber="147" type="holotype">holotype</typeStatus>
of
<taxonomicName id="4C165ADFFFAEFFF3961E175DFDF423BD" authority="Hibino &amp; Chiu &amp; Chen &amp; Shao, 2019" authorityName="Hibino &amp; Chiu &amp; Chen &amp; Shao" authorityYear="2019" box="[354,521,1658,1685]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="semilunatus" status="sp. nov.">
<emphasis id="B962FD4EFFAEFFF3961E175DFDF423BD" box="[354,521,1658,1685]" italics="true" pageId="7" pageNumber="147">O. semilunatus</emphasis>
</taxonomicName>
<emphasis id="B962FD4EFFAEFFF39573175DFD9523BC" bold="true" box="[527,616,1659,1685]" pageId="7" pageNumber="147">
<taxonomicNameLabel id="A2514035FFAEFFF39573175DFD9523BC" box="[527,616,1659,1685]" pageId="7" pageNumber="147" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
having been misidentified as
<taxonomicName id="4C165ADFFFAEFFF394C8175DFBBD23BD" authorityName="Asano" authorityYear="1987" box="[948,1088,1658,1685]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="megalops">
<emphasis id="B962FD4EFFAEFFF394C8175DFBBD23BD" box="[948,1088,1658,1685]" italics="true" pageId="7" pageNumber="147">O. megalops</emphasis>
</taxonomicName>
. However, the new species can be distinguished from
<taxonomicName id="4C165ADFFFAEFFF396EC17B9FDE12391" authorityName="Asano" authorityYear="1987" box="[400,540,1694,1721]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="7" pageNumber="147" phylum="Chordata" rank="species" species="megalops">
<emphasis id="B962FD4EFFAEFFF396EC17B9FDE12391" box="[400,540,1694,1721]" italics="true" pageId="7" pageNumber="147">O. megalops</emphasis>
</taxonomicName>
by having more total vertebrae (176 vs. 157168), three rows on the maxilla (vs. two rows, rarely one more row restricted to the posterior end), one + three supraorbital pores (vs. one + four), two preopercular pores (vs. three), the brownish tube of the anterior nostril (vs. mostly pale white), and the presence of a half-moon blotch on the anterior margin of the anus [vs. generally absent, or rarely, faded melanophores are present (
<figureCitation id="132D3DD9FFAEFFF397DC1608FF042260" box="[160,249,1838,1865]" captionStart="FIGURE 5" captionStartId="8.[151,250,1444,1469]" captionTargetBox="[264,1323,181,1417]" captionTargetId="figure@8.[264,1323,181,1417]" captionTargetPageId="8" captionText="FIGURE 5. Enclosed view of anus. A, Ophichthus semilunatus sp. nov., NMMB-P17751, holotype, 500 mm TL, Da-xi, Yi-lan, Taiwan; B, O. megalops (irregular pattern), KAUMI. 125145, 330 mm TL, Dong-gang, Taiwan." figureDoi="http://doi.org/10.5281/zenodo.3562769" httpUri="https://zenodo.org/record/3562769/files/figure.png" pageId="7" pageNumber="147">Fig. 5B</figureCitation>
)].
</paragraph>
</subSubSection>
</treatment>
</document>