treatments-xml/data/03/C2/3C/03C23C59FFF9F92E53F9F923FBA6F40F.xml
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<document id="67332F70A968B13185971B69AD3FC7A0" ID-DOI="10.11646/zootaxa.4750.1.2" ID-GBIF-Dataset="226b65ae-c038-4bd6-9cd8-e52b63672813" ID-ISSN="1175-5326" ID-Zenodo-Dep="3702823" ID-ZooBank="A4901CAE-B053-4FE3-AECA-A7C1DF74B895" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1583849157361" checkinUser="plazi" docAuthor="Bogorodsky, Sergey V., Mal, Ahmad O. &amp; Alpermann, Tilman J." docDate="2020" docId="03C23C59FFF9F92E53F9F923FBA6F40F" docLanguage="en" docName="zootaxa.4750.1.2.pdf" docOrigin="Zootaxa 4750 (1)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Ophichthus olivaceus McCosker &amp; Bogorodsky 2020, sp. nov." docType="treatment" docVersion="8" lastPageNumber="37" masterDocId="FFFB4421FFFAF928536EFF87FFEFF220" masterDocTitle="Description of a new snake eel Ophichthus olivaceus (Teleostei: Anguilliformes Ophichthidae) from the Red Sea" masterLastPageNumber="48" masterPageNumber="31" pageNumber="34" updateTime="1698726652692" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="8DE023A6BDBDAC5A085B56FE48F454EB">Description of a new snake eel Ophichthus olivaceus (Teleostei: Anguilliformes Ophichthidae) from the Red Sea</mods:title>
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<mods:namePart id="0DB4237D2D147444613F9A5389082F52">Bogorodsky, Sergey V.</mods:namePart>
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<mods:namePart id="227D7C613C1A9CDF15980238A8263914">Mal, Ahmad O.</mods:namePart>
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<treatment id="03C23C59FFF9F92E53F9F923FBA6F40F" ID-DOI="http://doi.org/10.5281/zenodo.3706325" ID-GBIF-Taxon="162481302" ID-Zenodo-Dep="3706325" LSID="urn:lsid:plazi:treatment:03C23C59FFF9F92E53F9F923FBA6F40F" httpUri="http://treatment.plazi.org/id/03C23C59FFF9F92E53F9F923FBA6F40F" lastPageId="6" lastPageNumber="37" pageId="3" pageNumber="34">
<subSubSection id="C371DEC4FFF9F92B53F9F923FE77F527" pageId="3" pageNumber="34" type="nomenclature">
<paragraph id="8BD48D4FFFF9F92B53F9F923FCA2F49F" blockId="3.[151,845,1700,1727]" box="[151,845,1700,1727]" pageId="3" pageNumber="34">
<heading id="D09C3A23FFF9F92B53F9F923FCA2F49F" bold="true" box="[151,845,1700,1727]" fontSize="11" level="1" pageId="3" pageNumber="34" reason="1">
<emphasis id="B91F515DFFF9F92B53F9F923FCA2F49F" bold="true" box="[151,845,1700,1727]" pageId="3" pageNumber="34">
<taxonomicName id="4C6BF6CCFFF9F92B53F9F923FD0CF49F" authority="McCosker &amp; Bogorodsky" authorityName="McCosker &amp; Bogorodsky" authorityYear="2020" box="[151,739,1700,1727]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="3" pageNumber="34" phylum="Chordata" rank="species" species="olivaceus" status="sp. nov.">
<emphasis id="B91F515DFFF9F92B53F9F923FE73F49F" bold="true" box="[151,412,1700,1727]" italics="true" pageId="3" pageNumber="34">Ophichthus olivaceus</emphasis>
McCosker &amp; Bogorodsky
</taxonomicName>
,
<taxonomicNameLabel id="A22CEC26FFF9F92B5181F922FCA2F49F" box="[751,845,1701,1727]" pageId="3" pageNumber="34" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
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</paragraph>
<paragraph id="8BD48D4FFFF9F92B53F9F96AFE77F527" blockId="3.[151,408,1773,1835]" box="[151,408,1773,1799]" pageId="3" pageNumber="34">
<heading id="D09C3A23FFF9F92B53F9F96AFE77F527" bold="true" box="[151,408,1773,1799]" fontSize="11" level="1" pageId="3" pageNumber="34" reason="1">
<emphasis id="B91F515DFFF9F92B53F9F96AFE77F527" bold="true" box="[151,408,1773,1799]" pageId="3" pageNumber="34">Olivaceous snake eel</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C371DEC4FFF9F92B53F9F896FE9CF50B" box="[151,371,1809,1835]" pageId="3" pageNumber="34" type="description">
<paragraph id="8BD48D4FFFF9F92B53F9F896FE9CF50B" blockId="3.[151,408,1773,1835]" box="[151,371,1809,1835]" pageId="3" pageNumber="34">
(
<figureCitation id="135091CAFFF9F92B53F1F896FEE4F50B" box="[159,267,1809,1835]" captionStart-0="FIGURE 1" captionStart-1="FIGURE 2" captionStart-2="FIGURE 3" captionStartId-0="5.[151,250,1181,1206]" captionStartId-1="7.[151,250,1895,1920]" captionStartId-2="8.[151,250,1724,1749]" captionTargetBox-0="[151,1436,181,1156]" captionTargetBox-1="[189,1398,181,1852]" captionTargetBox-2="[151,1436,181,1682]" captionTargetId-0="figure@5.[151,1436,181,1156]" captionTargetId-1="figure@7.[189,1398,181,1869]" captionTargetId-2="figure@8.[151,1436,181,1698]" captionTargetPageId-0="5" captionTargetPageId-1="7" captionTargetPageId-2="8" captionText-0="FIGURE 1. Ophichthus olivaceus sp. nov., SMF 35878 [KAU17-4], fresh holotype, 756 mm TL, off Jizan, Saudi Arabia, Red Sea. Photo by S.V. Bogorodsky." captionText-1="FIGURE 2. Ophichthus olivaceus sp. nov., SMF 35878 [KAU17-4], holotype. A: underside of the head; B: head and anterior trunk close-up; C: cephalic sensory pores system; IO-infraorbital pores, LL-lateral line pores, M-lower jaw pores, PO-preopercular pores, SO-supraorbital pores, ST-supratemporal pores. Photos by S.V. Bogorodsky (A &amp; B), drawing by J.E. McCosker (C)." captionText-2="FIGURE 3. Ophichthus olivaceus sp. nov., KAUMM 453 [KAU17-80], paratype, semi-diagrammatic illustration of the dentition. A: photograph of upper jaw; B: drawing of upper jaw (left) and lower jaw (right). Photo by S.V. Bogorodsky (A), drawing by J.E. McCosker (B)." figureDoi-0="http://doi.org/10.5281/zenodo.3702825" figureDoi-1="http://doi.org/10.5281/zenodo.3702827" figureDoi-2="http://doi.org/10.5281/zenodo.3702829" httpUri-0="https://zenodo.org/record/3702825/files/figure.png" httpUri-1="https://zenodo.org/record/3702827/files/figure.png" httpUri-2="https://zenodo.org/record/3702829/files/figure.png" pageId="3" pageNumber="34">Figs. 13</figureCitation>
;
<tableCitation id="C6E9B8F4FFF9F92B5279F896FE87F50B" box="[279,360,1809,1835]" captionStart="TABLE 1" captionStartId="14.[144,232,461,487]" captionTargetPageId="14" captionText="TABLE 1. Sequences used in the phylogenetic analysis of partial mitochondrial COI gene of Ophichthinae. The species identification of the respective voucher specimen from which a sequence has been derived is that of the sequence author (i.e. that provided with the sequence data at the time of publication) unless the identification has been changed herein due to various reasons (mostly examination of images and re-evaluation of species identification). Changed identifications are marked by addition of (ID)." httpUri="http://table.plazi.org/id/DF14DDC7FFF4F92653FEFE4AF8B5F00F" pageId="3" pageNumber="34" tableUuid="DF14DDC7FFF4F92653FEFE4AF8B5F00F">Table 1</tableCitation>
)
</paragraph>
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<paragraph id="8BD48D4FFFF9F92B53F9F8DEFC2CF5B7" blockId="3.[151,1437,1880,2015]" pageId="3" pageNumber="34">
<materialsCitation id="3B038712FFF9F92B53F9F8DEFC2CF5B7" ID-GBIF-Occurrence="2575116059" collectingDate="2017-01-25" collectionCode="SMF, V" collectorName="Bogorodsky, A. O &amp; M. Gabr." country="Saudi Arabia" elevation="38" latitude="16.752861" location="Red Sea" longLatPrecision="1" longitude="42.75286" pageId="3" pageNumber="34" specimenCount="1" stateProvince="Jizan" typeStatus="holotype">
<emphasis id="B91F515DFFF9F92B53F9F8DEFEE4F553" bold="true" box="[151,267,1881,1907]" pageId="3" pageNumber="34">
<typeStatus id="54D033EDFFF9F92B53F9F8DEFEE9F553" box="[151,262,1881,1907]" pageId="3" pageNumber="34" type="holotype">Holotype</typeStatus>
.
</emphasis>
<collectionCode id="ED7A158AFFF9F92B527EF8DEFEA7F553" box="[272,328,1881,1907]" country="Germany" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34838" lsid="urn:lsid:biocol.org:col:34838" name="Forschungsinstitut und Natur-Museum Senckenberg" pageId="3" pageNumber="34">SMF</collectionCode>
35878 [KAU17-4],
<quantity id="4C9320AAFFF9F92B514BF8DFFD6FF553" box="[549,640,1880,1907]" metricMagnitude="-1" metricUnit="m" metricValue="7.56" pageId="3" pageNumber="34" unit="mm" value="756.0">756 mm</quantity>
TL,
<location id="8EB4DB94FFF9F92B51DFF8DEFCE1F553" LSID="urn:lsid:plazi:treatment:03C23C59FFF9F92E53F9F923FBA6F40F:8EB4DB94FFF9F92B51DFF8DEFCE1F553" box="[689,782,1881,1907]" country="Saudi Arabia" latitude="16.752861" longLatPrecision="1" longitude="42.75286" name="Red Sea" pageId="3" pageNumber="34" stateProvince="Jizan">Red Sea</location>
,
<collectingCountry id="F37CCDDFFFF9F92B5079F8DEFC46F553" box="[791,937,1881,1907]" name="Saudi Arabia" pageId="3" pageNumber="34">Saudi Arabia</collectingCountry>
, off
<collectingRegion id="49AF43ADFFF9F92B50B9F8DEFBFCF553" box="[983,1043,1881,1907]" country="Saudi Arabia" name="Jizan" pageId="3" pageNumber="34">Jizan</collectingRegion>
, st3,
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,
<geoCoordinate id="EE5FEB88FFF9F92B5798F8DFFA77F553" box="[1270,1432,1880,1907]" degrees="42" direction="east" minutes="45" orientation="longitude" pageId="3" pageNumber="34" precision="1" seconds="10.3" value="42.75286">42°4510.3E</geoCoordinate>
,
<quantity id="4C9320AAFFF9F92B53F9F8FBFF13F5B7" box="[151,252,1916,1943]" metricMagnitude="1" metricUnit="m" metricValue="3.8" metricValueMax="4.1" metricValueMin="3.5" pageId="3" pageNumber="34" unit="m" value="38.0" valueMax="41.0" valueMin="35.0">
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,
<date id="FFD5AB8FFFF9F92B5266F8FBFE2BF5B7" box="[264,452,1916,1943]" pageId="3" pageNumber="34" value="2017-01-25">
<collectingDate id="EF915267FFF9F92B5266F8FBFE2BF5B7" box="[264,452,1916,1943]" pageId="3" pageNumber="34" value="2017-01-25">25 January 2017</collectingDate>
</date>
, coll. S.
<collectionCode id="ED7A158AFFF9F92B5174F8FAFDDEF5B7" box="[538,561,1917,1943]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="3" pageNumber="34" type="Museum">V</collectionCode>
.
<collectorName id="269EE899FFF9F92B5152F8FAFCECF5B7" box="[572,771,1917,1943]" pageId="3" pageNumber="34">Bogorodsky, A.O</collectorName>
. Mal &amp;
<collectorName id="269EE899FFF9F92B5030F8FAFC2CF5B7" box="[862,963,1917,1943]" pageId="3" pageNumber="34">M. Gabr.</collectorName>
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</paragraph>
<paragraph id="8BD48D4FFFF9F92B53A9F826FB9FF5FF" blockId="3.[151,1437,1880,2015]" pageId="3" pageNumber="34">
<materialsCitation id="3B038712FFF9F92B53A9F826FD2CF5FF" ID-GBIF-Occurrence="2575116060" collectingDate="2017-01-31" collectionCode="KAUMM" country="Saudi Arabia" elevation="58" latitude="16.702501" location="Red Sea" longLatPrecision="1" longitude="42.386307" pageId="3" pageNumber="34" specimenCode="KAUMM 453" specimenCount="1" stateProvince="Jizan" typeStatus="paratype">
<emphasis id="B91F515DFFF9F92B53A9F826FED4F59B" bold="true" box="[199,315,1953,1979]" pageId="3" pageNumber="34">
<typeStatus id="54D033EDFFF9F92B53A9F826FED9F59B" box="[199,310,1953,1979]" pageId="3" pageNumber="34" type="paratype">Paratype</typeStatus>
.
</emphasis>
<specimenCode id="DBCD2534FFF9F92B522BF826FE08F59B" box="[325,487,1952,1979]" collectionCode="KAUMM" pageId="3" pageNumber="34">KAUMM 453</specimenCode>
[KAU17-80],
<quantity id="4C9320AAFFF9F92B51FFF826FD1EF59B" box="[657,753,1953,1979]" metricMagnitude="-1" metricUnit="m" metricValue="7.409999999999999" pageId="3" pageNumber="34" unit="mm" value="741.0">741 mm</quantity>
TL,
<location id="8EB4DB94FFF9F92B5042F826FC61F59B" LSID="urn:lsid:plazi:treatment:03C23C59FFF9F92E53F9F923FBA6F40F:8EB4DB94FFF9F92B5042F826FC61F59B" box="[812,910,1953,1979]" country="Saudi Arabia" latitude="16.702501" longLatPrecision="1" longitude="42.386307" name="Red Sea" pageId="3" pageNumber="34" stateProvince="Jizan">Red Sea</location>
,
<collectingCountry id="F37CCDDFFFF9F92B50F2F826FBDDF59B" box="[924,1074,1953,1979]" name="Saudi Arabia" pageId="3" pageNumber="34">Saudi Arabia</collectingCountry>
, off
<collectingRegion id="49AF43ADFFF9F92B5704F826FB49F59B" box="[1130,1190,1953,1979]" country="Saudi Arabia" name="Jizan" pageId="3" pageNumber="34">Jizan</collectingRegion>
, st13,
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,
<geoCoordinate id="EE5FEB88FFF9F92B53F9F842FED6F5FF" box="[151,313,1989,2015]" degrees="42" direction="east" minutes="23" orientation="longitude" pageId="3" pageNumber="34" precision="1" seconds="10.7" value="42.386307">42°2310.7E</geoCoordinate>
,
<quantity id="4C9320AAFFF9F92B522AF843FE46F5FF" box="[324,425,1988,2015]" metricMagnitude="1" metricUnit="m" metricValue="5.75" metricValueMax="6.3" metricValueMin="5.2" pageId="3" pageNumber="34" unit="m" value="57.5" valueMax="63.0" valueMin="52.0">
<elevation id="00466A7CFFF9F92B522AF843FE46F5FF" box="[324,425,1988,2015]" metricMagnitude="1" metricUnit="m" metricValue="5.75" metricValueMax="6.3" metricValueMin="5.2" pageId="3" pageNumber="34" unit="m" value="57.5" valueMax="63.0" valueMin="52.0">5263 m</elevation>
</quantity>
,
<date id="FFD5AB8FFFF9F92B52DBF842FD9EF5FF" box="[437,625,1989,2015]" pageId="3" pageNumber="34" value="2017-01-31">
<collectingDate id="EF915267FFF9F92B52DBF842FD9EF5FF" box="[437,625,1989,2015]" pageId="3" pageNumber="34" value="2017-01-31">31 January 2017</collectingDate>
</date>
, coll. S
</materialsCitation>
.
<materialsCitation id="3B038712FFF9F92B51A9F842FB83F5FF" ID-GBIF-Occurrence="2575116058" box="[711,1132,1989,2015]" collectionCode="V" collectorName="Bogorodsky, A. O &amp; M. Gabr" country="Saudi Arabia" pageId="3" pageNumber="34" specimenCount="1" stateProvince="Jizan" typeStatus="paratype">
<collectionCode id="ED7A158AFFF9F92B51A9F842FD31F5FF" box="[711,734,1989,2015]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="3" pageNumber="34" type="Museum">V</collectionCode>
.
<collectorName id="269EE899FFF9F92B5187F842FC5FF5FF" box="[745,944,1989,2015]" pageId="3" pageNumber="34">Bogorodsky, A.O</collectorName>
. Mal &amp;
<collectorName id="269EE899FFF9F92B5765F842FB83F5FF" box="[1035,1132,1989,2015]" pageId="3" pageNumber="34">M. Gabr</collectorName>
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.
</paragraph>
</subSubSection>
<subSubSection id="C371DEC4FFFEF92C53A9FF1FFEC0F0F0" pageId="4" pageNumber="35" type="diagnosis">
<paragraph id="8BD48D4FFFFEF92C53A9FF1FFA72F3F3" blockId="4.[151,1437,152,1979]" pageId="4" pageNumber="35">
<emphasis id="B91F515DFFFEF92C53A9FF1FFEADF293" bold="true" box="[199,322,152,179]" pageId="4" pageNumber="35">Diagnosis.</emphasis>
A moderately elongate species of
<taxonomicName id="4C6BF6CCFFFEF92C51AEFF1EFCAEF293" authorityName="Ahl" authorityYear="1789" box="[704,833,153,179]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="4" pageNumber="35" phylum="Chordata" rank="genus">
<emphasis id="B91F515DFFFEF92C51AEFF1EFCAEF293" box="[704,833,153,179]" italics="true" pageId="4" pageNumber="35">Ophichthus</emphasis>
</taxonomicName>
with: tail length 46.346.4%, head length 9.010.4%, and body depth at gill opening 3.64.2% of total length; dorsal-fin origin above middle of pectoral fin; pectoral fin rounded, elongate and well-developed; posterior nostril within upper lip, not visible externally; two minute barbels along upper lip, the first between anterior and posterior nostrils, the second beneath mid orbit; pores apparent, supraorbital pores 1 + 4, infraorbital pores 4 + 2, preopercular pores 5 + 3; teeth small, conical, uniserial on vomer and jaws; coloration dark tan with olivaceous hue dorsally and laterally, tan ventrally on tail and pale yellow ventrally on trunk (
<figureCitation id="135091CAFFFEF92C526DFEF6FEACF3AB" box="[259,323,369,395]" captionStart="FIGURE 1" captionStartId="5.[151,250,1181,1206]" captionTargetBox="[151,1436,181,1156]" captionTargetId="figure@5.[151,1436,181,1156]" captionTargetPageId="5" captionText="FIGURE 1. Ophichthus olivaceus sp. nov., SMF 35878 [KAU17-4], fresh holotype, 756 mm TL, off Jizan, Saudi Arabia, Red Sea. Photo by S.V. Bogorodsky." figureDoi="http://doi.org/10.5281/zenodo.3702825" httpUri="https://zenodo.org/record/3702825/files/figure.png" pageId="4" pageNumber="35">Fig. 1</figureCitation>
); two pale yellow smudges above pectoral-fin base; snout and lower jaw dark brown; throat pale orange-yellow, preopercle pale yellow and postorbital area pale yellow with numerous dark brown dots; dorsal fin olivaceous, anal fin pale olivaceous; tip of tail dark red; total vertebrae 141145, mean vertebral formula 1267.5143.
</paragraph>
<paragraph id="8BD48D4FFFFEF92C53A9FE5BFEC0F0F0" blockId="4.[151,1437,152,1979]" pageId="4" pageNumber="35">
<emphasis id="B91F515DFFFEF92C53A9FE5BFB68F3D7" bold="true" box="[199,1159,476,503]" pageId="4" pageNumber="35">
Counts and measurements (in mm) of
<typeStatus id="54D033EDFFFEF92C51CCFE5AFCE6F3D7" box="[674,777,477,503]" pageId="4" pageNumber="35" type="holotype">holotype</typeStatus>
and
<typeStatus id="54D033EDFFFEF92C5024FE5AFC5AF3D7" box="[842,949,477,503]" pageId="4" pageNumber="35" type="paratype">paratype</typeStatus>
(in parentheses).
</emphasis>
Total length 756 (741); head 68.2 (77.2); trunk 337 (321); tail 351 (343); predorsal distance 87.6 (101.5); pectoral-fin length 24.7 (29.1); pectoral-fin base 8.9 (7.3); body depth
<emphasis id="B91F515DFFFEF92C513AFDA1FD9AF01F" box="[596,629,550,575]" italics="true" pageId="4" pageNumber="35">ca.</emphasis>
27 (31) at gill openings; body width
<emphasis id="B91F515DFFFEF92C574EFDA1FBADF01F" box="[1056,1090,550,575]" italics="true" pageId="4" pageNumber="35">ca.</emphasis>
32 (29) at gill openings; body depth at anus
<emphasis id="B91F515DFFFEF92C525FFDCDFEBCF043" box="[305,339,586,611]" italics="true" pageId="4" pageNumber="35">ca.</emphasis>
32 (29); body width at anus
<emphasis id="B91F515DFFFEF92C51FDFDCDFD5BF043" box="[659,692,586,611]" italics="true" pageId="4" pageNumber="35">ca.</emphasis>
32 (29); body depth at branchial basket 33 (38); snout 15.3 (15.3); tip of snout to rictus 22.5 (21.5); snout overhang beyond tip of lower jaw 5.7 (5.2); eye diameter 7.2 (7.4); interorbital width 14.8 (16.2); gill opening height 9.9 (10.8); isthmus width 21.5 (21.5). Vertebral formula 1169145 (1366141).
</paragraph>
</subSubSection>
<subSubSection id="C371DEC4FFFEF92D53A9FD5FFAB7F766" lastPageId="5" lastPageNumber="36" pageId="4" pageNumber="35" type="description">
<paragraph id="8BD48D4FFFFEF92C53A9FD5FFA9CF75B" blockId="4.[151,1437,152,1979]" pageId="4" pageNumber="35">
<emphasis id="B91F515DFFFEF92C53A9FD5FFEB6F0D3" bold="true" box="[199,345,728,755]" pageId="4" pageNumber="35">Description.</emphasis>
Body moderately elongate, subcircular to posterior third of tail, then becoming more compressed, its depth at gill openings
<quantity id="4C9320AAFFFEF92C52DEFD7AFDFCF137" box="[432,531,765,791]" metricMagnitude="-1" metricUnit="m" metricValue="6.604" metricValueMax="7.112" metricValueMin="6.096" pageId="4" pageNumber="35" unit="in" value="26.0" valueMax="28.0" valueMin="24.0">2428 in</quantity>
TL. Branchial basket moderately expanded. Head length
<quantity id="4C9320AAFFFEF92C57F8FD7AFAE8F137" box="[1174,1287,765,791]" metricMagnitude="-1" metricUnit="m" metricValue="1.1557000000000002" metricValueMax="1.2446000000000002" metricValueMin="1.0668000000000002" pageId="4" pageNumber="35" unit="in" value="4.55" valueMax="4.9" valueMin="4.2">4.24.9 in</quantity>
trunk length. Head and trunk 1.81.9, head length 9.611.1, and tail length
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TL. Snout rounded, moderately acute when viewed from above; a short groove bisecting underside of snout from the mid-base of anterior nostril tube. Upper jaw overhanging, snout tip extends forward by diameter of orbit. Upper jaw not elongated, rictus behind a vertical from posterior margin of eye by diameter of eye. Eye not enlarged,
<quantity id="4C9320AAFFFEF92C50ADFC0AFBDAF187" box="[963,1077,909,935]" metricMagnitude="-2" metricUnit="m" metricValue="7.62" metricValueMax="7.874" metricValueMin="7.366" pageId="4" pageNumber="35" unit="in" value="3.0" valueMax="3.1" valueMin="2.9">2.93.1 in</quantity>
upper jaw and
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head. A shallow groove along interorbital region from snout to nape. Anterior nostrils tubular, not elongate, extending ventrolaterally from snout at
<emphasis id="B91F515DFFFEF92C528CFC51FE13F1CF" box="[482,508,982,1007]" italics="true" pageId="4" pageNumber="35">ca</emphasis>
. 30
<superScript id="7C1E2007FFFEF92C5149FC53FDC0F1C2" attach="none" box="[551,559,980,994]" fontSize="6" pageId="4" pageNumber="35">o</superScript>
, reaching snout tip and chin when directed to them. Posterior nostril opening medially directed in upper lip, not visible externally. Two minute barbels along lower edge of lip of upper jaw, the first between the anterior and posterior nostrils, the second below mid-orbit. Dorsal-fin origin begins above middle of pectoral fin, predorsal length
<quantity id="4C9320AAFFFEF92C5168FBC6FD96F67B" box="[518,633,1089,1115]" metricMagnitude="-1" metricUnit="m" metricValue="2.0193" metricValueMax="2.1843999999999997" metricValueMin="1.8541999999999998" pageId="4" pageNumber="35" unit="in" value="7.949999999999999" valueMax="8.6" valueMin="7.3">7.38.6 in</quantity>
TL. Median fins obvious, not set in shallow grooves, slightly elevated and moderate in height anteriorly, then notably elevated approximately one-half head length prior to the tail tip, then diminishing in height approximately a snout length in advance of the pointed tail tip. Pectoral fins elongate, not lanceolate, the longest rays in dorsal third. Length of pectoral fins
<quantity id="4C9320AAFFFEF92C5016FB2AFC07F6E7" box="[888,1000,1197,1223]" metricMagnitude="-2" metricUnit="m" metricValue="6.985" metricValueMax="7.111999999999999" metricValueMin="6.858" pageId="4" pageNumber="35" unit="in" value="2.75" valueMax="2.8" valueMin="2.7">2.72.8 in</quantity>
head length,
<quantity id="4C9320AAFFFEF92C5713FB2AFB30F6E7" box="[1149,1247,1197,1223]" metricMagnitude="-1" metricUnit="m" metricValue="7.239" metricValueMax="7.874" metricValueMin="6.604" pageId="4" pageNumber="35" unit="in" value="28.5" valueMax="31.0" valueMin="26.0">2631 in</quantity>
total length. Gill openings about twice in isthmus width, from mid-body to below pectoral-fin bases, its upper edge opposite upper pectoral-fin rays. Head pores apparent (
<figureCitation id="135091CAFFFEF92C5135FB72FD45F72F" box="[603,682,1269,1295]" captionStart="FIGURE 1" captionStartId="5.[151,250,1181,1206]" captionTargetBox="[151,1436,181,1156]" captionTargetId="figure@5.[151,1436,181,1156]" captionTargetPageId="5" captionText="FIGURE 1. Ophichthus olivaceus sp. nov., SMF 35878 [KAU17-4], fresh holotype, 756 mm TL, off Jizan, Saudi Arabia, Red Sea. Photo by S.V. Bogorodsky." figureDoi="http://doi.org/10.5281/zenodo.3702825" httpUri="https://zenodo.org/record/3702825/files/figure.png" pageId="4" pageNumber="35">Figs. 1</figureCitation>
&amp;
<figureCitation id="135091CAFFFEF92C51BFFB72FD0DF72F" box="[721,738,1269,1295]" captionStart="FIGURE 2" captionStartId="7.[151,250,1895,1920]" captionTargetBox="[189,1398,181,1852]" captionTargetId="figure@7.[189,1398,181,1869]" captionTargetPageId="7" captionText="FIGURE 2. Ophichthus olivaceus sp. nov., SMF 35878 [KAU17-4], holotype. A: underside of the head; B: head and anterior trunk close-up; C: cephalic sensory pores system; IO-infraorbital pores, LL-lateral line pores, M-lower jaw pores, PO-preopercular pores, SO-supraorbital pores, ST-supratemporal pores. Photos by S.V. Bogorodsky (A &amp; B), drawing by J.E. McCosker (C)." figureDoi="http://doi.org/10.5281/zenodo.3702827" httpUri="https://zenodo.org/record/3702827/files/figure.png" pageId="4" pageNumber="35">2</figureCitation>
). Single median interorbital and temporal pores. Supraorbital pores 1 + 4, infraorbital pores 4 + 2, lower jaw pores 5, preopercular pores 3, supratemporal pores 3. Faint rows of sensory papillae visible along the nape. Lateral-line pores apparent: 9 before gill opening in an arching sequence, 71 before mid-anus, total 147 pores. The last pore before the tail tip in a distance a little greater than eye diameter.
</paragraph>
<paragraph id="8BD48D4FFFFEF92C53A9FA02FBEEF42B" blockId="4.[151,1437,152,1979]" pageId="4" pageNumber="35">
Teeth small, conical, uniserial, slightly retrorse and not close-set (
<figureCitation id="135091CAFFFEF92C50F1FA02FC0CF7BF" box="[927,995,1413,1439]" captionStart="FIGURE 3" captionStartId="8.[151,250,1724,1749]" captionTargetBox="[151,1436,181,1682]" captionTargetId="figure@8.[151,1436,181,1698]" captionTargetPageId="8" captionText="FIGURE 3. Ophichthus olivaceus sp. nov., KAUMM 453 [KAU17-80], paratype, semi-diagrammatic illustration of the dentition. A: photograph of upper jaw; B: drawing of upper jaw (left) and lower jaw (right). Photo by S.V. Bogorodsky (A), drawing by J.E. McCosker (B)." figureDoi="http://doi.org/10.5281/zenodo.3702829" httpUri="https://zenodo.org/record/3702829/files/figure.png" pageId="4" pageNumber="35">Fig. 3</figureCitation>
). One medial followed by 2 teeth medially and 2 laterally at tip of snout, followed by an intermaxillary rosette of 2 medial and 2 lateral irregular pairs of teeth, followed by a gap, then a single row of 12 small vomerine teeth, decreasing in size posteriorly. Maxilla with 910 uniserial teeth on each side. Lower jaw with 1112 teeth in a single row.
</paragraph>
<paragraph id="8BD48D4FFFFEF92C53A9F992FD0FF4C3" blockId="4.[151,1437,152,1979]" pageId="4" pageNumber="35">
<emphasis id="B91F515DFFFEF92C53A9F992FE65F40F" box="[199,394,1557,1583]" italics="true" pageId="4" pageNumber="35">Color when fresh</emphasis>
(
<figureCitation id="135091CAFFFEF92C52F5F992FE32F40F" box="[411,477,1557,1583]" captionStart="FIGURE 1" captionStartId="5.[151,250,1181,1206]" captionTargetBox="[151,1436,181,1156]" captionTargetId="figure@5.[151,1436,181,1156]" captionTargetPageId="5" captionText="FIGURE 1. Ophichthus olivaceus sp. nov., SMF 35878 [KAU17-4], fresh holotype, 756 mm TL, off Jizan, Saudi Arabia, Red Sea. Photo by S.V. Bogorodsky." figureDoi="http://doi.org/10.5281/zenodo.3702825" httpUri="https://zenodo.org/record/3702825/files/figure.png" pageId="4" pageNumber="35">Fig. 1</figureCitation>
). Coloration dark tan with olivaceous hue dorsally and laterally, tan ventrally on tail and pale yellow ventrally on trunk; two pale yellow blotches, one above another, above pectoral-fin base; head with dark brown snout and lower jaw, throat pale orange-yellow, preopercle pale yellow, and postorbital area densely dotted with dark brown; cephalic pores black-edged; anterior nostril yellowish suffused with dark brown; dorsal fin uniform olivaceous, anal fin uniform pale olivaceous, expanded part of both fins at tip of tail dark olivaceous; tail at its tip brownish, tip dark red; pectoral fins brown.
</paragraph>
<paragraph id="8BD48D4FFFFEF92C53A9F96AFB0CF59B" blockId="4.[151,1437,152,1979]" pageId="4" pageNumber="35">
<emphasis id="B91F515DFFFEF92C53A9F96AFE51F527" box="[199,446,1773,1799]" italics="true" pageId="4" pageNumber="35">Coloration in ethanol</emphasis>
uniform gray-brown dorsally, becoming paler along flanks and white ventrally. Snout, lower jaw, anterior nostrils, palate, and nape dark gray. Cheeks are light gray. Cephalic pores within dark spots. Lateral-line pores within minute pale spots. Anal fin and anal opening white like ventral surface. Dorsal fin pale gray becoming white at margin. Base of caudal fin black dorsally and ventrally about a snouts length before pale tail tip. Pectoral fin gray, slightly darker in center, its margin pale. Two pale eye-sized blotches above pectoral, one above the dorsal insertion of the fin, the second above and slightly in advance of it and in line with orbit.
</paragraph>
<caption id="DF14DDC7FFFFF92D53F9FB1AFE34F6FA" ID-DOI="http://doi.org/10.5281/zenodo.3702825" ID-Zenodo-Dep="3702825" httpUri="https://zenodo.org/record/3702825/files/figure.png" pageId="5" pageNumber="36" startId="5.[151,250,1181,1206]" targetBox="[151,1436,181,1156]" targetPageId="5">
<paragraph id="8BD48D4FFFFFF92D53F9FB1AFE34F6FA" blockId="5.[151,1436,1181,1242]" pageId="5" pageNumber="36">
<emphasis id="B91F515DFFFFF92D53F9FB1AFEFCF696" bold="true" box="[151,275,1181,1206]" pageId="5" pageNumber="36">FIGURE 1.</emphasis>
<taxonomicName id="4C6BF6CCFFFFF92D5274FB19FE1AF696" authority="Bogorodsky &amp; Mal &amp; Alpermann, 2020" authorityName="Bogorodsky &amp; Mal &amp; Alpermann" authorityYear="2020" box="[282,501,1182,1206]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="olivaceus" status="sp. nov.">
<emphasis id="B91F515DFFFFF92D5274FB19FE1AF696" box="[282,501,1182,1206]" italics="true" pageId="5" pageNumber="36">Ophichthus olivaceus</emphasis>
</taxonomicName>
<emphasis id="B91F515DFFFFF92D5295FB19FDA3F696" bold="true" box="[507,588,1182,1206]" pageId="5" pageNumber="36">
<taxonomicNameLabel id="A22CEC26FFFFF92D5295FB19FDA3F696" box="[507,588,1182,1206]" pageId="5" pageNumber="36" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, SMF 35878 [KAU17-4], fresh holotype, 756 mm TL, off Jizan, Saudi Arabia, Red Sea. Photo by S.V. Bogorodsky.
</paragraph>
</caption>
<paragraph id="8BD48D4FFFFFF92D53A9FA8FFAB7F766" blockId="5.[151,1443,1288,2035]" pageId="5" pageNumber="36">
<emphasis id="B91F515DFFFFF92D53A9FA8FFF11F703" bold="true" box="[199,254,1288,1315]" pageId="5" pageNumber="36">Size.</emphasis>
The largest known specimen is
<quantity id="4C9320AAFFFFF92D5106FA8FFD29F703" box="[616,710,1288,1315]" metricMagnitude="-1" metricUnit="m" metricValue="7.56" pageId="5" pageNumber="36" unit="mm" value="756.0">756 mm</quantity>
TL, a ripe female with packed ovaries, the ova ~
<quantity id="4C9320AAFFFFF92D579BFA8EFAD8F703" box="[1269,1335,1289,1315]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="5" pageNumber="36" unit="mm" value="1.0">1 mm</quantity>
in diameter. The
<typeStatus id="54D033EDFFFFF92D526EFAAAFE8FF767" box="[256,352,1325,1351]" pageId="5" pageNumber="36" type="paratype">paratype</typeStatus>
is
<quantity id="4C9320AAFFFFF92D52EFFAAAFE31F767" box="[385,478,1325,1351]" metricMagnitude="-1" metricUnit="m" metricValue="7.409999999999999" pageId="5" pageNumber="36" unit="mm" value="741.0">741 mm</quantity>
TL, also a ripe female with densely packed ovaries and ova ~
<quantity id="4C9320AAFFFFF92D57FCFAAAFB23F767" box="[1170,1228,1325,1351]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="5" pageNumber="36" unit="mm" value="1.0">1mm</quantity>
in diameter.
</paragraph>
</subSubSection>
<subSubSection id="C371DEC4FFFFF92D53A9FAD6FCCAF74A" box="[199,805,1360,1387]" pageId="5" pageNumber="36" type="etymology">
<paragraph id="8BD48D4FFFFFF92D53A9FAD6FCCAF74A" blockId="5.[151,1443,1288,2035]" box="[199,805,1360,1387]" pageId="5" pageNumber="36">
<emphasis id="B91F515DFFFFF92D53A9FAD6FEA1F74B" bold="true" box="[199,334,1361,1387]" pageId="5" pageNumber="36">Etymology.</emphasis>
From Latin, in reference to its coloration.
</paragraph>
</subSubSection>
<subSubSection id="C371DEC4FFFFF92D53A9FAF3FBEAF792" pageId="5" pageNumber="36" type="distribution">
<paragraph id="8BD48D4FFFFFF92D53A9FAF3FBEAF792" blockId="5.[151,1443,1288,2035]" pageId="5" pageNumber="36">
<emphasis id="B91F515DFFFFF92D53A9FAF3FE8EF7AF" bold="true" box="[199,353,1396,1423]" pageId="5" pageNumber="36">Distribution.</emphasis>
Known from the
<typeStatus id="54D033EDFFFFF92D5146FAF3FD65F7AE" box="[552,650,1396,1422]" pageId="5" pageNumber="36" type="holotype">holotype</typeStatus>
and
<typeStatus id="54D033EDFFFFF92D51AEFAF2FCCCF7AF" box="[704,803,1397,1423]" pageId="5" pageNumber="36" type="paratype">paratype</typeStatus>
, trawled from a soft substratum from
<quantity id="4C9320AAFFFFF92D57A5FAF3FAC1F7AF" box="[1227,1326,1396,1423]" metricMagnitude="1" metricUnit="m" metricValue="4.9" metricValueMax="6.3" metricValueMin="3.5" pageId="5" pageNumber="36" unit="m" value="49.0" valueMax="63.0" valueMin="35.0">3563 m</quantity>
depth off
<collectingRegion id="49AF43ADFFFFF92D53F9FA1FFF3CF792" box="[151,211,1432,1458]" country="Saudi Arabia" name="Jizan" pageId="5" pageNumber="36">Jizan</collectingRegion>
, southern
<collectingCountry id="F37CCDDFFFFFF92D5228FA1FFE34F792" box="[326,475,1432,1458]" name="Saudi Arabia" pageId="5" pageNumber="36">Saudi Arabia</collectingCountry>
. At this point it is considered a Red Sea endemic.
</paragraph>
</subSubSection>
<subSubSection id="C371DEC4FFFFF92E53A9FA3AFBA6F40F" lastPageId="6" lastPageNumber="37" pageId="5" pageNumber="36" type="discussion">
<paragraph id="8BD48D4FFFFFF92D53A9FA3AFA72F48F" blockId="5.[151,1443,1288,2035]" pageId="5" pageNumber="36">
<emphasis id="B91F515DFFFFF92D53A9FA3AFED4F7F7" bold="true" box="[199,315,1469,1495]" pageId="5" pageNumber="36">Remarks.</emphasis>
The new species differs from the majority of its congeners in having its anal-fin origin behind midbody and in having fewer total vertebrae. It is most similar in its morphology and meristics to
<taxonomicName id="4C6BF6CCFFFFF92D57F1FA67FEB0F43F" authority="(D'Ancona 1928)" baseAuthorityName="D'Ancona" baseAuthorityYear="1928" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="echeloides">
<emphasis id="B91F515DFFFFF92D57F1FA67FA4CF7DA" box="[1183,1443,1504,1530]" italics="true" pageId="5" pageNumber="36">Ophichthus echeloides</emphasis>
(
<bibRefCitation id="EFFAF0BEFFFFF92D53F1F982FEB8F43F" author="D'Ancona, U." box="[159,343,1541,1567]" pageId="5" pageNumber="36" pagination="1 - 146" refId="ref10817" refString="D'Ancona, U. (1928) Murenoidi (Apodes) del Mar Rosso e del Golfo di Aden. Materiali raccolti dal Prof. Luigi Sanzo nella Campagna della R. N. &quot; Ammiraglio Magnaghi &quot; 1923 - 24. Memoria, Reale Comitato Talassografico Italiano, 146, 1 - 146." type="journal article" year="1928">DAncona 1928</bibRefCitation>
)
</taxonomicName>
from the Red Sea, and to
<taxonomicName id="4C6BF6CCFFFFF92D51E1F983FACFF43F" authority="Hibino, McCosker &amp; Tashiro 2019" authorityName="Hibino, McCosker &amp; Tashiro" authorityYear="2019" box="[655,1312,1540,1567]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="oligosteus">
<emphasis id="B91F515DFFFFF92D51E1F983FC64F43E" box="[655,907,1540,1566]" italics="true" pageId="5" pageNumber="36">Ophichthus oligosteus</emphasis>
<bibRefCitation id="EFFAF0BEFFFFF92D50FDF983FACFF43F" author="Hibino, Y. &amp; McCosker, J. E. &amp; Tashiro, F." box="[915,1312,1540,1567]" pageId="5" pageNumber="36" pagination="289 - 306" refId="ref11351" refString="Hibino, Y., McCosker, J. E. &amp; Tashiro, F. (2019 a) Four new deepwater Ophichthus (Anguilliformes: Ophichthidae) from Japan with a redescription of Ophichthus pallens (Richardson 1848). Ichthyological Research, 66 (2), 289 - 306. https: // doi. org / 10.1007 / s 10228 - 018 - 00677 - 3" type="journal article" year="2019">Hibino, McCosker &amp; Tashiro 2019</bibRefCitation>
</taxonomicName>
from Tosa Bay,
<collectingCountry id="F37CCDDFFFFFF92D53BFF9AFFEF7F462" box="[209,280,1576,1602]" name="India" pageId="5" pageNumber="36">Kochi</collectingCountry>
,
<collectingCountry id="F37CCDDFFFFFF92D524AF9AEFE8BF463" box="[292,356,1577,1603]" name="Japan" pageId="5" pageNumber="36">Japan</collectingCountry>
(
<bibRefCitation id="EFFAF0BEFFFFF92D521DF9AFFDBAF463" author="Hibino, Y. &amp; McCosker, J. E. &amp; Tashiro, F." box="[371,597,1576,1603]" pageId="5" pageNumber="36" pagination="289 - 306" refId="ref11351" refString="Hibino, Y., McCosker, J. E. &amp; Tashiro, F. (2019 a) Four new deepwater Ophichthus (Anguilliformes: Ophichthidae) from Japan with a redescription of Ophichthus pallens (Richardson 1848). Ichthyological Research, 66 (2), 289 - 306. https: // doi. org / 10.1007 / s 10228 - 018 - 00677 - 3" type="journal article" year="2019">
Hibino
<emphasis id="B91F515DFFFFF92D52A5F9AEFDEBF462" box="[459,516,1576,1602]" italics="true" pageId="5" pageNumber="36">et al.</emphasis>
2019a
</bibRefCitation>
).
<taxonomicName id="4C6BF6CCFFFFF92D5106F9AFFC89F462" baseAuthorityName="D'Ancona" baseAuthorityYear="1928" box="[616,870,1576,1602]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="echeloides">
<emphasis id="B91F515DFFFFF92D5106F9AFFC89F462" box="[616,870,1576,1602]" italics="true" pageId="5" pageNumber="36">Ophichthus echeloides</emphasis>
</taxonomicName>
was described as
<taxonomicName id="4C6BF6CCFFFFF92D575AF9AFFABAF462" box="[1076,1365,1576,1602]" class="Actinopterygii" family="Ophichthidae" genus="Leptocephalus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="echeloides">
<emphasis id="B91F515DFFFFF92D575AF9AFFABAF462" box="[1076,1365,1576,1602]" italics="true" pageId="5" pageNumber="36">Leptocephalus echeloides</emphasis>
</taxonomicName>
based on a leptocephalus captured in 1923 at
<quantity id="4C9320AAFFFFF92D5129F9CBFD62F447" box="[583,653,1612,1639]" metricMagnitude="2" metricUnit="m" metricValue="2.76" pageId="5" pageNumber="36" unit="m" value="276.0">276 m</quantity>
depth near Perim (= Barim)
<collectingCountry id="F37CCDDFFFFFF92D50A2F9CBFBFCF446" box="[972,1043,1612,1638]" name="Iceland" pageId="5" pageNumber="36">Island</collectingCountry>
, located near the intersection of the Red Sea and the Gulf of Aden. It had the characteristics of an ophichthid, however, no one was able to assign it to a described species. An adult
<taxonomicName id="4C6BF6CCFFFFF92D528FF913FD8DF48E" authorityName="Ahl" authorityYear="1789" box="[481,610,1684,1710]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="genus">
<emphasis id="B91F515DFFFFF92D528FF913FD8DF48E" box="[481,610,1684,1710]" italics="true" pageId="5" pageNumber="36">Ophichthus</emphasis>
</taxonomicName>
was captured in 1989 by a trammel net at
<quantity id="4C9320AAFFFFF92D5752F912FB6CF48F" box="[1084,1155,1685,1711]" metricMagnitude="2" metricUnit="m" metricValue="3.0" pageId="5" pageNumber="36" unit="m" value="300.0">300 m</quantity>
off Eilat, in the Red Sea.
</paragraph>
<paragraph id="8BD48D4FFFFFF92E53A9F93EFCEFF137" blockId="5.[151,1443,1288,2035]" lastBlockId="6.[151,1437,153,1583]" lastPageId="6" lastPageNumber="37" pageId="5" pageNumber="36">
It was subsequently recognized as a species of
<taxonomicName id="4C6BF6CCFFFFF92D51B4F93FFCB4F4F2" authorityName="Ahl" authorityYear="1789" box="[730,859,1720,1746]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="genus">
<emphasis id="B91F515DFFFFF92D51B4F93FFCB4F4F2" box="[730,859,1720,1746]" italics="true" pageId="5" pageNumber="36">Ophichthus</emphasis>
</taxonomicName>
and the adult of
<taxonomicName id="4C6BF6CCFFFFF92D5775F93FFEA1F4D7" authority="(McCosker et al. 1993)" baseAuthorityName="McCosker" baseAuthorityYear="1993" class="Actinopterygii" family="Ophichthidae" genus="Leptocephalus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="echeloides">
<emphasis id="B91F515DFFFFF92D5775F93FFAD3F4F2" box="[1051,1340,1720,1746]" italics="true" pageId="5" pageNumber="36">Leptocephalus echeloides</emphasis>
(
<bibRefCitation id="EFFAF0BEFFFFF92D5625F93EFEA9F4D7" author="McCosker, J. E. &amp; Baranes, A. &amp; Golani, D." pageId="5" pageNumber="36" pagination="165 - 170" refId="ref12286" refString="McCosker, J. E., Baranes, A. &amp; Golani, D. (1993) Description of the adult of Leptocephalus echeloides D'Ancona (1928), a deepwater snake eel, genus Ophichthus (Pisces: Ophichthidae), from the Gulf of Aqaba. Cybium, 17 (2), 165 - 170." type="journal article" year="1993">
McCosker
<emphasis id="B91F515DFFFFF92D53A2F95AFEEBF4D6" box="[204,260,1756,1782]" italics="true" pageId="5" pageNumber="36">et al.</emphasis>
1993
</bibRefCitation>
)
</taxonomicName>
. We are unaware of subsequent specimens. It is similar to the new species in its general appearance and its dorsal-fin origin (above middle of pectoral fin), and in possessing a third preopercular pore. It differs from it in its dentition (
<taxonomicName id="4C6BF6CCFFFFF92D5228F8A2FE3DF51E" authority="Bogorodsky &amp; Mal &amp; Alpermann, 2020" authorityName="Bogorodsky &amp; Mal &amp; Alpermann" authorityYear="2020" box="[326,466,1828,1855]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="olivaceus" status="sp. nov.">
<emphasis id="B91F515DFFFFF92D5228F8A2FE3DF51E" box="[326,466,1828,1855]" italics="true" pageId="5" pageNumber="36">O. olivaceus</emphasis>
</taxonomicName>
<emphasis id="B91F515DFFFFF92D52B9F8A2FDDFF51F" bold="true" box="[471,560,1829,1855]" pageId="5" pageNumber="36">
<taxonomicNameLabel id="A22CEC26FFFFF92D52B9F8A2FDDFF51F" box="[471,560,1829,1855]" pageId="5" pageNumber="36" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
has few and uniserial teeth
<emphasis id="B91F515DFFFFF92D500DF8A2FC95F51E" box="[867,890,1829,1854]" italics="true" pageId="5" pageNumber="36">vs</emphasis>
.
<taxonomicName id="4C6BF6CCFFFFF92D50E9F8A2FBF0F51E" box="[903,1055,1828,1855]" class="Actinopterygii" family="Ophichthidae" genus="Leptocephalus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="echeloides">
<emphasis id="B91F515DFFFFF92D50E9F8A2FBF0F51E" box="[903,1055,1828,1855]" italics="true" pageId="5" pageNumber="36">O. echeloides</emphasis>
</taxonomicName>
which has many and biserial teeth in its jaws); its higher vertebral number (141145 total, mean vertebral formula 1468143
<emphasis id="B91F515DFFFFF92D57DFF8CEFB20F542" box="[1201,1231,1865,1890]" italics="true" pageId="5" pageNumber="36">vs.</emphasis>
vertebral formula 1150125); shorter tail length (
<quantity id="4C9320AAFFFFF92D5293F8EBFDA4F5A6" box="[509,587,1900,1927]" metricMagnitude="-2" metricUnit="m" metricValue="5.460999999999999" pageId="5" pageNumber="36" unit="in" value="2.15">2.15 in</quantity>
TL
<emphasis id="B91F515DFFFFF92D5119F8EAFD61F5A6" box="[631,654,1901,1926]" italics="true" pageId="5" pageNumber="36">vs</emphasis>
.
<quantity id="4C9320AAFFFFF92D51F2F8EAFD34F5A6" box="[668,731,1900,1927]" metricMagnitude="-2" metricUnit="m" metricValue="4.318" pageId="5" pageNumber="36" unit="in" value="1.7">1.7 in</quantity>
TL); and a shorter head (
<quantity id="4C9320AAFFFFF92D509FF8EBFB80F5A6" box="[1009,1135,1900,1926]" metricMagnitude="-1" metricUnit="m" metricValue="2.6289" metricValueMax="2.8194" metricValueMin="2.4384" pageId="5" pageNumber="36" unit="in" value="10.35" valueMax="11.1" valueMin="9.6">9.611.1 in</quantity>
TL
<emphasis id="B91F515DFFFFF92D57F5F8EAFB5DF5A6" box="[1179,1202,1901,1926]" italics="true" pageId="5" pageNumber="36">vs</emphasis>
.
<quantity id="4C9320AAFFFFF92D57AEF8EAFB10F5A6" box="[1216,1279,1900,1927]" metricMagnitude="-1" metricUnit="m" metricValue="2.1336" pageId="5" pageNumber="36" unit="in" value="8.4">8.4 in</quantity>
TL). The new species is also similar to
<taxonomicName id="4C6BF6CCFFFFF92D52DEF816FDAAF58A" authorityName="Hibino, McCosker &amp; Tashiro" authorityYear="2019" box="[432,581,1936,1963]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="oligosteus">
<emphasis id="B91F515DFFFFF92D52DEF816FDAAF58A" box="[432,581,1936,1963]" italics="true" pageId="5" pageNumber="36">O. oligosteus</emphasis>
</taxonomicName>
, a recently described Japanese congener, in its general appearance and head length (
<taxonomicName id="4C6BF6CCFFFFF92D5383F832FE6EF5EE" authorityName="Hibino, McCosker &amp; Tashiro" authorityYear="2019" box="[237,385,1972,1999]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="oligosteus">
<emphasis id="B91F515DFFFFF92D5383F832FE6EF5EE" box="[237,385,1972,1999]" italics="true" pageId="5" pageNumber="36">O. oligosteus</emphasis>
</taxonomicName>
is
<quantity id="4C9320AAFFFFF92D52CFF832FE00F5EE" box="[417,495,1972,1999]" metricMagnitude="-1" metricUnit="m" metricValue="2.6162" pageId="5" pageNumber="36" unit="in" value="10.3">10.3 in</quantity>
TL), but differs in its dentition (
<taxonomicName id="4C6BF6CCFFFFF92D5034F832FC09F5EE" authority="Bogorodsky &amp; Mal &amp; Alpermann, 2020" authorityName="Bogorodsky &amp; Mal &amp; Alpermann" authorityYear="2020" box="[858,998,1972,1999]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="olivaceus" status="sp. nov.">
<emphasis id="B91F515DFFFFF92D5034F832FC09F5EE" box="[858,998,1972,1999]" italics="true" pageId="5" pageNumber="36">O. olivaceus</emphasis>
</taxonomicName>
<emphasis id="B91F515DFFFFF92D5083F832FBA9F5EF" bold="true" box="[1005,1094,1973,1999]" pageId="5" pageNumber="36">
<taxonomicNameLabel id="A22CEC26FFFFF92D5083F832FBA9F5EF" box="[1005,1094,1973,1999]" pageId="5" pageNumber="36" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
has few and uniserial teeth
<emphasis id="B91F515DFFFFF92D5610F832FA7AF5EE" box="[1406,1429,1973,1998]" italics="true" pageId="5" pageNumber="36">vs</emphasis>
.
<taxonomicName id="4C6BF6CCFFFFF92D53F9F85EFEC4F5D2" authorityName="Hibino, McCosker &amp; Tashiro" authorityYear="2019" box="[151,299,2008,2035]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="5" pageNumber="36" phylum="Chordata" rank="species" species="oligosteus">
<emphasis id="B91F515DFFFFF92D53F9F85EFEC4F5D2" box="[151,299,2008,2035]" italics="true" pageId="5" pageNumber="36">O. oligosteus</emphasis>
</taxonomicName>
which has more teeth in its jaws, and biserial maxillary and uniserial mandibular teeth); in the slightly anterior dorsal-fin origin (above mid pectoral fin
<emphasis id="B91F515DFFFCF92E51D7FF1DFD3FF293" box="[697,720,154,179]" italics="true" pageId="6" pageNumber="37">vs</emphasis>
. slightly behind the pectoral-fin tip); its higher vertebral number (141145 total, mean vertebral formula 1468143
<emphasis id="B91F515DFFFCF92E5182FF39FCECF2F7" box="[748,771,190,215]" italics="true" pageId="6" pageNumber="37">vs</emphasis>
. vertebral formula 1246121); and its shorter tail length (2.15 times in TL
<emphasis id="B91F515DFFFCF92E520FFF65FE97F2DB" box="[353,376,226,251]" italics="true" pageId="6" pageNumber="37">vs</emphasis>
. 1.6). Another species known from the Red Sea,
<taxonomicName id="4C6BF6CCFFFCF92E50CEFF66FBEBF2DB" baseAuthorityName="Jordan &amp; Snyder" baseAuthorityYear="1901" box="[928,1028,225,251]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="erabo">
<emphasis id="B91F515DFFFCF92E50CEFF66FBEBF2DB" box="[928,1028,225,251]" italics="true" pageId="6" pageNumber="37">O. erabo</emphasis>
</taxonomicName>
, shares a similar dentition (uniserial teeth in jaws and vomer) and vertebrae (143155), but easily differs in having large brown spots (no spots in
<taxonomicName id="4C6BF6CCFFFCF92E563AFE82FF0CF363" authority="Bogorodsky &amp; Mal &amp; Alpermann, 2020" authorityName="Bogorodsky &amp; Mal &amp; Alpermann" authorityYear="2020" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="olivaceus" status="sp. nov.">
<emphasis id="B91F515DFFFCF92E563AFE82FF0CF363" italics="true" pageId="6" pageNumber="37">O. olivaceus</emphasis>
</taxonomicName>
<emphasis id="B91F515DFFFCF92E5384FEAEFEADF363" bold="true" box="[234,322,297,323]" pageId="6" pageNumber="37">
<taxonomicNameLabel id="A22CEC26FFFCF92E5384FEAEFEADF363" box="[234,322,297,323]" pageId="6" pageNumber="37" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
), a longer tail (about
<quantity id="4C9320AAFFFCF92E515FFEAEFDB4F363" box="[561,603,297,323]" metricMagnitude="-2" metricUnit="m" metricValue="5.08" pageId="6" pageNumber="37" unit="in" value="2.0">2 in</quantity>
TL
<emphasis id="B91F515DFFFCF92E51E6FEADFD49F363" box="[648,678,298,323]" italics="true" pageId="6" pageNumber="37">vs.</emphasis>
<quantity id="4C9320AAFFFCF92E51C2FEAFFD15F363" box="[684,762,296,323]" metricMagnitude="-2" metricUnit="m" metricValue="5.460999999999999" pageId="6" pageNumber="37" unit="in" value="2.15">2.15 in</quantity>
TL) and a shorter head (11.512.0 in TL
<emphasis id="B91F515DFFFCF92E57ADFEADFB0EF363" box="[1219,1249,298,323]" italics="true" pageId="6" pageNumber="37">vs.</emphasis>
<quantity id="4C9320AAFFFCF92E5789FEAEFA8BF363" box="[1255,1380,297,323]" metricMagnitude="-1" metricUnit="m" metricValue="2.6289" metricValueMax="2.8194" metricValueMin="2.4384" pageId="6" pageNumber="37" unit="in" value="10.35" valueMax="11.1" valueMin="9.6">9.611.1 in</quantity>
TL). The new species is similar genetically and also in its morphometry and meristics to
<taxonomicName id="4C6BF6CCFFFCF92E5729FECAFACBF347" baseAuthorityName="Jordan &amp; Richardson" baseAuthorityYear="1908" box="[1095,1316,333,359]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="lithinus">
<emphasis id="B91F515DFFFCF92E5729FECAFACBF347" box="[1095,1316,333,359]" italics="true" pageId="6" pageNumber="37">Ophichthus lithinus</emphasis>
</taxonomicName>
(
<bibRefCitation id="EFFAF0BEFFFCF92E565CFECAFEB6F3AB" author="Jordan, D. S. &amp; Richardson, R. E." pageId="6" pageNumber="37" pagination="233 - 287" refId="ref11572" refString="Jordan, D. S. &amp;. Richardson, R. E. (1908) Fishes from islands of the Philippine Archipelago. Bulletin of the Bureau of Fisheries, 27 (640), 233 - 287. [for 1907]" type="journal article" year="1908">
<collectingCountry id="F37CCDDFFFFCF92E565CFECAFA90F347" box="[1330,1407,333,359]" name="Jordan" pageId="6" pageNumber="37">Jordan</collectingCountry>
&amp; Richardson 1908
</bibRefCitation>
), a medium-sized (to
<quantity id="4C9320AAFFFCF92E5123FEF6FD4FF3AB" box="[589,672,369,395]" metricMagnitude="0" metricUnit="m" metricValue="1.48" pageId="6" pageNumber="37" unit="cm" value="148.0">148 cm</quantity>
TL) shallow sand and mud bottom species known from
<collectingCountry id="F37CCDDFFFFCF92E5674FEF6FA80F3AB" box="[1306,1391,369,395]" name="Taiwan" pageId="6" pageNumber="37">Taiwan</collectingCountry>
, the
<collectingCountry id="F37CCDDFFFFCF92E53F9FE12FEF7F38F" box="[151,280,405,431]" name="Philippines" pageId="6" pageNumber="37">Philippines</collectingCountry>
, northern
<collectingCountry id="F37CCDDFFFFCF92E52E8FE12FE1FF38F" box="[390,496,405,431]" name="Australia" pageId="6" pageNumber="37">Australia</collectingCountry>
,
<collectingCountry id="F37CCDDFFFFCF92E5294FE12FDD9F38F" box="[506,566,405,431]" name="India" pageId="6" pageNumber="37">India</collectingCountry>
, and
<collectingCountry id="F37CCDDFFFFCF92E5101FE12FD33F38F" box="[623,732,405,431]" name="Myanmar" pageId="6" pageNumber="37">Myanmar</collectingCountry>
(
<bibRefCitation id="EFFAF0BEFFFCF92E5184FE12FC78F38F" author="Ray, D. &amp; Mohapatra, A. &amp; Biswas, S. &amp; Satpathy, K. K. &amp; Mishra, S. S." box="[746,919,404,431]" pageId="6" pageNumber="37" pagination="89 - 93" refId="ref13051" refString="Ray, D., Mohapatra, A., Biswas, S., Satpathy, K. K. &amp; Mishra, S. S. (2015) First record of the Evermann's Snake eel, Ophichthus lithinus (Actinopterygii: Anguilliformes: Ophichthidae) from the northern Indian Ocean. Acta Ichthyologica et Piscatoria, 45 (1), 89 - 93. https: // doi. org / 10.3750 / AIP 2015.45.1.10" type="journal article" year="2015">
Ray
<emphasis id="B91F515DFFFCF92E5071FE11FCB9F38F" box="[799,854,405,431]" italics="true" pageId="6" pageNumber="37">et al.</emphasis>
2015
</bibRefCitation>
;
<bibRefCitation id="EFFAF0BEFFFCF92E50CCFE12FAEDF38F" author="McCosker, J. E. &amp; Psomadakis, P. N." box="[930,1282,405,431]" pageId="6" pageNumber="37" pagination="71 - 83" refId="ref12586" refString="McCosker, J. E. &amp; Psomadakis, P. N. (2018) Snake eels of the genus Ophichthus (Anguilliformes) from Myanmar (Indian Ocean) with the description of two new species. Zootaxa, 4526 (1), 71 - 83. https: // doi. org / 10.11646 / zootaxa. 4526.1.5" type="journal article" year="2018">McCosker &amp; Psomadakis 2018</bibRefCitation>
). This species has an elongate, cylindrical, tapering and laterally compressed body, a pointed snout and tail tip; a body depth behind gill openings of
<quantity id="4C9320AAFFFCF92E52EDFE5AFE0AF3D7" box="[387,485,477,503]" metricMagnitude="-1" metricUnit="m" metricValue="8.763" metricValueMax="9.398" metricValueMin="8.128" pageId="6" pageNumber="37" unit="in" value="34.5" valueMax="37.0" valueMin="32.0">3237 in</quantity>
TL; its anus is at midbody; its head length is
<quantity id="4C9320AAFFFCF92E50B9FE5AFBBBF3D7" box="[983,1108,477,503]" metricMagnitude="-1" metricUnit="m" metricValue="2.7177999999999995" metricValueMax="2.9718" metricValueMin="2.4638" pageId="6" pageNumber="37" unit="in" value="10.7" valueMax="11.7" valueMin="9.7">9.711.7 in</quantity>
TL; it has uniserial dentition; a third preopercular pore; a notable barbel along the upper lip; and a similar pectoral-fin shape.
<taxonomicName id="4C6BF6CCFFFCF92E57AEFD86FA73F03B" baseAuthorityName="Jordan &amp; Richardson" baseAuthorityYear="1908" box="[1216,1436,513,539]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="lithinus">
<emphasis id="B91F515DFFFCF92E57AEFD86FA73F03B" box="[1216,1436,513,539]" italics="true" pageId="6" pageNumber="37">Ophichthus lithinus</emphasis>
</taxonomicName>
has a vertebral formula of 1267152, with 147157 total vertebrae. The species differ, however, in their coloration (
<taxonomicName id="4C6BF6CCFFFCF92E53CFFDCEFEF6F043" baseAuthorityName="Jordan &amp; Richardson" baseAuthorityYear="1908" box="[161,281,585,611]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="lithinus">
<emphasis id="B91F515DFFFCF92E53CFFDCEFEF6F043" box="[161,281,585,611]" italics="true" pageId="6" pageNumber="37">O. lithinus</emphasis>
</taxonomicName>
head and body are brownish yellow, overlain dorsally by irregular brown saddles and mottling). In the original description of
<taxonomicName id="4C6BF6CCFFFCF92E52A8FDE9FD7BF0A7" authorityName="Jordan &amp; Richardson" authorityYear="1908" box="[454,660,621,647]" class="Actinopterygii" family="Ophichthidae" genus="Leiuranus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="lithinus">
<emphasis id="B91F515DFFFCF92E52A8FDE9FD7BF0A7" box="[454,660,621,647]" italics="true" pageId="6" pageNumber="37">Leiuranus lithinus</emphasis>
</taxonomicName>
,
<bibRefCitation id="EFFAF0BEFFFCF92E51CAFDEAFC07F0A7" author="Jordan, D. S. &amp; Richardson, R. E." box="[676,1000,621,647]" pageId="6" pageNumber="37" pagination="233 - 287" refId="ref11572" refString="Jordan, D. S. &amp;. Richardson, R. E. (1908) Fishes from islands of the Philippine Archipelago. Bulletin of the Bureau of Fisheries, 27 (640), 233 - 287. [for 1907]" type="journal article" year="1908">
<collectingCountry id="F37CCDDFFFFCF92E51CAFDEAFD00F0A7" box="[676,751,621,647]" name="Jordan" pageId="6" pageNumber="37">Jordan</collectingCountry>
&amp; Richardson (1908)
</bibRefCitation>
stated “dorsal inserted over middle of reflexed pectoral”;
<bibRefCitation id="EFFAF0BEFFFCF92E521FFD16FDDDF08B" author="Ray, D. &amp; Mohapatra, A. &amp; Biswas, S. &amp; Satpathy, K. K. &amp; Mishra, S. S." box="[369,562,656,683]" pageId="6" pageNumber="37" pagination="89 - 93" refId="ref13051" refString="Ray, D., Mohapatra, A., Biswas, S., Satpathy, K. K. &amp; Mishra, S. S. (2015) First record of the Evermann's Snake eel, Ophichthus lithinus (Actinopterygii: Anguilliformes: Ophichthidae) from the northern Indian Ocean. Acta Ichthyologica et Piscatoria, 45 (1), 89 - 93. https: // doi. org / 10.3750 / AIP 2015.45.1.10" type="journal article" year="2015">
Ray
<emphasis id="B91F515DFFFCF92E52C9FD15FE36F08B" box="[423,473,657,683]" italics="true" pageId="6" pageNumber="37">et al</emphasis>
. (2015)
</bibRefCitation>
also reported the dorsal-fin origin to be above the middle of the pectoral fin. However,
<bibRefCitation id="EFFAF0BEFFFCF92E5263FD32FD5DF0EF" author="McCosker, J. E. &amp; Psomadakis, P. N." box="[269,690,693,719]" pageId="6" pageNumber="37" pagination="71 - 83" refId="ref12586" refString="McCosker, J. E. &amp; Psomadakis, P. N. (2018) Snake eels of the genus Ophichthus (Anguilliformes) from Myanmar (Indian Ocean) with the description of two new species. Zootaxa, 4526 (1), 71 - 83. https: // doi. org / 10.11646 / zootaxa. 4526.1.5" type="journal article" year="2018">McCosker &amp; Psomadakis (2018: 80)</bibRefCitation>
, writing about a badly twisted
<collectingCountry id="F37CCDDFFFFCF92E5778FD32FB6CF0EF" box="[1046,1155,693,719]" name="Myanmar" pageId="6" pageNumber="37">Myanmar</collectingCountry>
specimen wrote that the “dorsal fin arises ahead of gill opening by length of upper jaw”. A reexamination of that specimen demonstrates that its dorsal fin arises above the middle of its pectoral fin.
</paragraph>
<paragraph id="8BD48D4FFFFCF92E53A9FCA6FA98F1EB" blockId="6.[151,1437,153,1583]" pageId="6" pageNumber="37">
The new species is also similar in its morphometry and meristics to
<taxonomicName id="4C6BF6CCFFFCF92E50DCFCA6FA69F11B" authority="McCosker 2010" authorityName="McCosker" authorityYear="2010" box="[946,1414,801,827]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="ishiyamorum">
<emphasis id="B91F515DFFFCF92E50DCFCA6FB25F11B" box="[946,1226,801,827]" italics="true" pageId="6" pageNumber="37">Ophichthus ishiyamorum</emphasis>
<bibRefCitation id="EFFAF0BEFFFCF92E57BFFCA6FA69F11B" author="McCosker, J. E." box="[1233,1414,801,827]" pageId="6" pageNumber="37" pagination="1 - 39" refId="ref12174" 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>
, a deepwater species from the Gulf of Aden,
<collectingCountry id="F37CCDDFFFFCF92E5101FCC2FD21F17F" box="[623,718,837,863]" name="Somalia" pageId="6" pageNumber="37">Somalia</collectingCountry>
, where it was trawled and trapped between
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258
<specimenCount id="9D6D46C6FFFCF92E5782FCC3FAD9F17F" box="[1260,1334,836,863]" pageId="6" pageNumber="37" type="generic">400 m</specimenCount>
</quantity>
.
<taxonomicName id="4C6BF6CCFFFCF92E562EFCC2FEB1F1A3" authorityName="McCosker" authorityYear="2010" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="ishiyamorum">
<emphasis id="B91F515DFFFCF92E562EFCC2FEB1F1A3" italics="true" pageId="6" pageNumber="37">Ophichthus ishiyamorum</emphasis>
</taxonomicName>
is similar in possessing a wedge-shaped pectoral fin, a dorsal-fin origin slightly in advance of the pectoral-fin tip, uniserial dentition, and a third preopercular pore. It differs from the new species in its body proportions (tail 5255% and head 1415% of TL) and vertebral number (MVF 1550131, total vertebrae 130132).
</paragraph>
<paragraph id="8BD48D4FFFFCF92E53A9FC52FD93F72F" blockId="6.[151,1437,153,1583]" pageId="6" pageNumber="37">
<taxonomicName id="4C6BF6CCFFFCF92E53A9FC52FDD4F1CF" authority="Bennett 1830" authorityName="Bennett" authorityYear="1830" box="[199,571,981,1007]" class="Actinopterygii" family="Ophichthidae" genus="Ophisurus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="apicalis">
<emphasis id="B91F515DFFFCF92E53A9FC52FE72F1CF" box="[199,413,981,1007]" italics="true" pageId="6" pageNumber="37">Ophisurus apicalis</emphasis>
Bennett 1830
</taxonomicName>
was described from Sumatra in two lines of text and without an illustration. Nothing in its terse description could separate it from our new species as well as several other recognized taxa. The type specimen is lost. Data for the species are scarce,
<bibRefCitation id="EFFAF0BEFFFCF92E5045FB9AFBB2F618" author="McCosker, J. E. &amp; Castle, P. H. J." box="[811,1117,1053,1080]" pageId="6" pageNumber="37" pagination="176 - 186" refId="ref12416" refString="McCosker, J. E. &amp; Castle, P. H. J. (1986) Family Ophichthidae. In: Smith, M. M. &amp; Heemstra, P. C. (Eds.), Smiths' Sea Fishes. Macmillan South Africa, Johannesburg, pp. 176 - 186." type="book chapter" year="1986">McCosker &amp; Castle (1986)</bibRefCitation>
reported its tail length to be about
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TL and its total vertebrae 136139;
<bibRefCitation id="EFFAF0BEFFFCF92E51D5FBC6FC4CF67B" author="Kimura, S. &amp; Imamura, H. &amp; Nguyen, V. Q. &amp; Pham, T. D." box="[699,931,1089,1115]" pageId="6" pageNumber="37" refId="ref11804" refString="Kimura, S., Imamura, H., Nguyen, V. Q. &amp; Pham, T. D. (2018) Fishes of Ha Long Bay, the World Natural Heritage Site in northern Vietnam. Fisheries Research Laboratory, Mie University, Shima, 314 pp." type="book" year="2018">
Kimura
<emphasis id="B91F515DFFFCF92E5076FBC5FCA5F67B" box="[792,842,1089,1115]" italics="true" pageId="6" pageNumber="37">et al</emphasis>
. (2018)
</bibRefCitation>
did not provide the tail length but gave total vertebrae as 138141. In addition,
<taxonomicName id="4C6BF6CCFFFCF92E5171FBE2FD75F65F" authorityName="Bennett" authorityYear="1830" box="[543,666,1125,1151]" class="Actinopterygii" family="Ophichthidae" genus="Ophisurus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="apicalis">
<emphasis id="B91F515DFFFCF92E5171FBE2FD75F65F" box="[543,666,1125,1151]" italics="true" pageId="6" pageNumber="37">O. apicalis</emphasis>
</taxonomicName>
has biserial vomerine teeth. All three characters differentiate it from
<taxonomicName id="4C6BF6CCFFFCF92E53F9FB0EFECDF683" authorityName="Bogorodsky &amp; Mal &amp; Alpermann" authorityYear="2020" box="[151,290,1161,1187]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="olivaceus">
<emphasis id="B91F515DFFFCF92E53F9FB0EFECDF683" box="[151,290,1161,1187]" italics="true" pageId="6" pageNumber="37">O. olivaceus</emphasis>
</taxonomicName>
. Y. Hibino is preparing an extensive description and history of the taxon and will be creating a
<typeStatus id="54D033EDFFFCF92E5653FB0EFA76F683" box="[1341,1433,1161,1187]" pageId="6" pageNumber="37" type="neotype">neotype</typeStatus>
.
<bibRefCitation id="EFFAF0BEFFFCF92E53F9FB2AFE6DF6E7" author="Kimura, S. &amp; Imamura, H. &amp; Nguyen, V. Q. &amp; Pham, T. D." box="[151,386,1197,1223]" pageId="6" pageNumber="37" refId="ref11804" refString="Kimura, S., Imamura, H., Nguyen, V. Q. &amp; Pham, T. D. (2018) Fishes of Ha Long Bay, the World Natural Heritage Site in northern Vietnam. Fisheries Research Laboratory, Mie University, Shima, 314 pp." type="book" year="2018">
Kimura
<emphasis id="B91F515DFFFCF92E539AFB29FEC9F6E7" box="[244,294,1197,1223]" italics="true" pageId="6" pageNumber="37">et al</emphasis>
. (2018)
</bibRefCitation>
, in additional to their five described species, briefly reported upon five unrecognized species from
<collectingCountry id="F37CCDDFFFFCF92E53BAFB56FED8F6CB" box="[212,311,1233,1259]" name="Vietnam" pageId="6" pageNumber="37">Vietnam</collectingCountry>
. Their
<taxonomicName id="4C6BF6CCFFFCF92E52EDFB56FDEBF6CB" authorityName="Ahl" authorityYear="1789" box="[387,516,1233,1259]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="genus">
<emphasis id="B91F515DFFFCF92E52EDFB56FDEBF6CB" box="[387,516,1233,1259]" italics="true" pageId="6" pageNumber="37">Ophichthus</emphasis>
</taxonomicName>
sp. 5 is very similar to
<taxonomicName id="4C6BF6CCFFFCF92E5066FB56FC7BF6CB" authorityName="Bogorodsky &amp; Mal &amp; Alpermann" authorityYear="2020" box="[776,916,1233,1259]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="olivaceus">
<emphasis id="B91F515DFFFCF92E5066FB56FC7BF6CB" box="[776,916,1233,1259]" italics="true" pageId="6" pageNumber="37">O. olivaceus</emphasis>
</taxonomicName>
in having olivaceous coloration, but described it as having two rows of teeth on its vomer.
</paragraph>
<paragraph id="8BD48D4FFFFCF92E53A9FA9EFBA6F40F" blockId="6.[151,1437,153,1583]" pageId="6" pageNumber="37">
<emphasis id="B91F515DFFFCF92E53A9FA9EFE1EF713" bold="true" box="[199,497,1304,1331]" pageId="6" pageNumber="37">Molecular phylogenetics.</emphasis>
The two specimens of
<taxonomicName id="4C6BF6CCFFFCF92E519DFA9EFC0AF713" authority="Bogorodsky &amp; Mal &amp; Alpermann, 2020" authorityName="Bogorodsky &amp; Mal &amp; Alpermann" authorityYear="2020" box="[755,997,1305,1331]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="olivaceus" status="sp. nov.">
<emphasis id="B91F515DFFFCF92E519DFA9EFC0AF713" box="[755,997,1305,1331]" italics="true" pageId="6" pageNumber="37">Ophichthus olivaceus</emphasis>
</taxonomicName>
<emphasis id="B91F515DFFFCF92E5085FA9EFBAAF713" bold="true" box="[1003,1093,1305,1331]" pageId="6" pageNumber="37">
<taxonomicNameLabel id="A22CEC26FFFCF92E5085FA9EFBAAF713" box="[1003,1093,1305,1331]" pageId="6" pageNumber="37" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
form a joint clade that is sister to a clade formed by two specimens of
<taxonomicName id="4C6BF6CCFFFCF92E5129FABAFD53F777" authorityName="Jordan &amp; Richardson" authorityYear="1908" box="[583,700,1341,1367]" class="Actinopterygii" family="Ophichthidae" genus="Leiuranus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="lithinus">
<emphasis id="B91F515DFFFCF92E5129FABAFD53F777" box="[583,700,1341,1367]" italics="true" pageId="6" pageNumber="37">O. lithinus</emphasis>
</taxonomicName>
, both collected from the Western Pacific (
<emphasis id="B91F515DFFFCF92E57E0FAB9FB45F777" box="[1166,1194,1342,1367]" italics="true" pageId="6" pageNumber="37">i.e</emphasis>
.,
<collectingCountry id="F37CCDDFFFFCF92E57D0FABAFAD3F777" box="[1214,1340,1341,1367]" name="Philippines" pageId="6" pageNumber="37">Philippines</collectingCountry>
and
<collectingCountry id="F37CCDDFFFFCF92E561EFABAFF27F75B" name="Taiwan" pageId="6" pageNumber="37">Taiwan</collectingCountry>
, respectively, see
<figureCitation id="135091CAFFFCF92E52FFFAE6FE3AF75B" box="[401,469,1377,1403]" captionStart="FIGURE 4" captionStartId="10.[151,250,188,213]" captionTargetId="figure@9.[160,1428,181,1970]" captionTargetPageId="9" captionText="FIGURE 4. Maximum Likelihood phylogenetic tree based on partial sequences (652 bp) of the mitochondrial COI gene includ- ing available sequences of Ophichthinae and COI barcoding sequences from the two type specimens of Ophichthus olivaceus sp. nov. and several sequences of the subfamily Myrophinae as the outgroup. Branches with 100 percent support from bootstrapped analyses (1.000 replicates) are depicted as broad lines, other bootstrap values higher than 50 percent are shown. Scale bar represents the average number of nucleotide nucleotide substitutions per site." figureDoi="http://doi.org/10.5281/zenodo.3707978" httpUri="https://zenodo.org/record/3707978/files/figure.png" pageId="6" pageNumber="37">Fig. 4</figureCitation>
). The two most closely related sequences of any specimen from each of the two clades are in average 0.015 nucleotide substitutions apart from each other, corresponding to a HKY distance value of 0.7 percent. The next higher nodes in the phylogeny did not receive substantial support from bootstrapped analyses, but together with 15 other sequences those from
<taxonomicName id="4C6BF6CCFFFCF92E51E3FA4AFCF6F7C7" authorityName="Bogorodsky &amp; Mal &amp; Alpermann" authorityYear="2020" box="[653,793,1485,1511]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="olivaceus">
<emphasis id="B91F515DFFFCF92E51E3FA4AFCF6F7C7" box="[653,793,1485,1511]" italics="true" pageId="6" pageNumber="37">O. olivaceus</emphasis>
</taxonomicName>
and
<taxonomicName id="4C6BF6CCFFFCF92E5021FA4AFC2AF7C7" authorityName="Jordan &amp; Richardson" authorityYear="1908" box="[847,965,1485,1511]" class="Actinopterygii" family="Ophichthidae" genus="Leiuranus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="species" species="lithinus">
<emphasis id="B91F515DFFFCF92E5021FA4AFC2AF7C7" box="[847,965,1485,1511]" italics="true" pageId="6" pageNumber="37">O. lithinus</emphasis>
</taxonomicName>
form a well-supported larger clade within the
<taxonomicName id="4C6BF6CCFFFCF92E53AFFA76FEB3F42B" authorityName="Gunther" authorityYear="1870" box="[193,348,1521,1547]" class="Actinopterygii" family="Ophichthidae" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="subFamily" subFamily="Ophichthinae">Ophichthinae</taxonomicName>
. Most of these are also identified as members of
<taxonomicName id="4C6BF6CCFFFCF92E50EBFA76FBE9F42B" authorityName="Ahl" authorityYear="1789" box="[901,1030,1521,1547]" class="Actinopterygii" family="Ophichthidae" genus="Ophichthus" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="genus">
<emphasis id="B91F515DFFFCF92E50EBFA76FBE9F42B" box="[901,1030,1521,1547]" italics="true" pageId="6" pageNumber="37">Ophichthus</emphasis>
</taxonomicName>
by the respective sequence authors, but several sequence vouchers are identified as members of the genus
<taxonomicName id="4C6BF6CCFFFCF92E50C7F992FBAEF40F" authorityName="Kaup" authorityYear="1856" box="[937,1089,1557,1583]" class="Actinopterygii" family="Ophichthidae" genus="Pisodonophis" kingdom="Animalia" order="Anguilliformes" pageId="6" pageNumber="37" phylum="Chordata" rank="genus">
<emphasis id="B91F515DFFFCF92E50C7F992FBAEF40F" box="[937,1089,1557,1583]" italics="true" pageId="6" pageNumber="37">Pisodonophis</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
</treatment>
</document>