treatments-xml/data/DB/27/8F/DB278FC0C29C59D587D343D9D6B7AE86.xml
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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1193.116538" ID-Pensoft-Pub="1313-2970-1193-125" ID-Pensoft-UUID="A3A9A67DCA3E5D27B1A4E380C67DD858" ID-ZooBank="672951D5E7D74D81AB9C419B811D5B97" ModsDocID="1313-2970-1193-125" checkinTime="1709717609101" checkinUser="pensoft" docAuthor="Ota, Yuzo, Erasmus, Anja, Grutter, Alexandra S. &amp; Smit, Nico J." docDate="2024" docId="DB278FC0C29C59D587D343D9D6B7AE86" docLanguage="en" docName="ZooKeys 1193: 125-144" docOrigin="ZooKeys 1193" docPubDate="2024-03-05" docSource="http://dx.doi.org/10.3897/zookeys.1193.116538" docTitle="Gnathia antennacrassa Ota &amp; Erasmus &amp; Grutter &amp; Smit 2024, sp. nov." docType="treatment" docUuid="DB30A1C7-2DCE-458B-920C-56AD365203EE" docUuidSource="ZooBank" docVersion="1" id="A3A9A67DCA3E5D27B1A4E380C67DD858" lastPageNumber="125" masterDocId="A3A9A67DCA3E5D27B1A4E380C67DD858" masterDocTitle="Two new species and new host and distribution records of Gnathia Leach, 1814 (Crustacea, Isopoda, Gnathiidae) from Western Australia and the Great Barrier Reef, Australia" masterLastPageNumber="144" masterPageNumber="125" pageNumber="125" updateTime="1709717609101" updateUser="pensoft">
<mods:mods id="454406086A44045D6022BE1BDB2D4EFB" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="43F31A4463F0BA5798457049F0C4E758">
<mods:title id="D33F72DBD9999ED011542A6935978B78">Two new species and new host and distribution records of Gnathia Leach, 1814 (Crustacea, Isopoda, Gnathiidae) from Western Australia and the Great Barrier Reef, Australia</mods:title>
</mods:titleInfo>
<mods:name id="636F57A2C109A42CE192F930C06D66AF" type="personal">
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</mods:role>
<mods:namePart id="D0A88ADAD64000EA1A9BB5AF94F9B038">Ota, Yuzo</mods:namePart>
<mods:nameIdentifier id="D2295622A0F1BF07DD85197F437B3928" type="ORCID">https://orcid.org/0000-0002-7747-6678</mods:nameIdentifier>
<mods:affiliation id="EAB522E7FDAF861BEFF6E5CF1C751B2B">San'in Kaigan Geopark Museum of the Earth and Sea, 1794 - 4, Makidani, Iwami-cho, Iwami-gun, Tottori 681 - 0001, Japan</mods:affiliation>
<mods:nameIdentifier id="D740E4117513B3FBD917EED3EDC98FF7" type="email">y_ota8316@yahoo.co.jp</mods:nameIdentifier>
</mods:name>
<mods:name id="BA4848FBB8C624CCB04BC72CF5B70C20" type="personal">
<mods:role id="06E04D9CB7B477CBC9C7B4C3E69B6B66">
<mods:roleTerm id="1CAF9C33D4204F3EA4DE4BDEA2790F07">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="68E8D1544488F8FAEE13B500324F8804">Erasmus, Anja</mods:namePart>
<mods:nameIdentifier id="9E7D345F304B7026C968F73D4955DEBC" type="ORCID">https://orcid.org/0000-0001-8505-8583</mods:nameIdentifier>
<mods:affiliation id="DE06DFD26984542503765E06B8A7A852">Water Research Group, Unit for Environmental Sciences and Management, North-West University, Private Bag X 6001, Potchefstroom, 2520, South Africa</mods:affiliation>
</mods:name>
<mods:name id="742AA5FABD9443D63A42369D9409E1BB" type="personal">
<mods:role id="2B8537F3B632078A88E7AEBD6CB0F76B">
<mods:roleTerm id="0D4D35F84D211763C3769315F3497802">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="D23ED97684C55704DABB09AD86B2AF65">Grutter, Alexandra S.</mods:namePart>
<mods:nameIdentifier id="3382DA67104552B791B2295AB10DCF30" type="ORCID">https://orcid.org/0000-0003-1688-2821</mods:nameIdentifier>
<mods:affiliation id="C1AC0AE135F5E57A48E87CC459285868">School of the Environment, The University of Queensland, St. Lucia, Queensland 4072, Australia</mods:affiliation>
</mods:name>
<mods:name id="E5EDE4E3DF21F299461A14B77A6A31D2" type="personal">
<mods:role id="3823EFC5589CC8C188B1CAB589B33571">
<mods:roleTerm id="626573DF9F81D7B0EE0CBA0D49E906E5">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="612C6C4A361C9CF722AFC2E4B717B3D4">Smit, Nico J.</mods:namePart>
<mods:nameIdentifier id="0D4207C364FF0F6E9FB81FF2DB65F68A" type="ORCID">https://orcid.org/0000-0001-7950-193X</mods:nameIdentifier>
<mods:affiliation id="8308531E7C835C49BE45B4EDD53CF269">Water Research Group, Unit for Environmental Sciences and Management, North-West University, Private Bag X 6001, Potchefstroom, 2520, South Africa</mods:affiliation>
</mods:name>
<mods:typeOfResource id="28CFD8DA23717BF8BCA5C0DA126DE8F4">text</mods:typeOfResource>
<mods:relatedItem id="CC4D1AAAFF7500386B750CBAC82DB573" type="host">
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<mods:part id="D30F1CBCF1F693979762CC8355C89022">
<mods:date id="141072E8F2598A273D7B976B509CAD39">2024</mods:date>
<mods:detail id="9E122CA64436E6DECE09C442C0651EB3" type="pubDate">
<mods:number id="0A3C6CC6007E334E6360A89AB84B8E65">2024-03-05</mods:number>
</mods:detail>
<mods:detail id="FEC8F5AF887477CEFFE25BE80B7E28E4" type="volume">
<mods:number id="A3748771B8C4DC0BB566805F984EFD98">1193</mods:number>
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<mods:url id="C6E0CE84BE5F66014FC02A6F98293847">http://dx.doi.org/10.3897/zookeys.1193.116538</mods:url>
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<mods:classification id="D498761CA1CB2E4B8A6A431ECDC1A0C3">journal article</mods:classification>
<mods:identifier id="14E66372BA6E2EAD79006DCCAE3BDEAF" type="DOI">http://dx.doi.org/10.3897/zookeys.1193.116538</mods:identifier>
<mods:identifier id="4997D84A9BB4599E74DC1F5425D91F13" type="Pensoft-Pub">1313-2970-1193-125</mods:identifier>
<mods:identifier id="3DA0CC9929E0D68E22F1D7DEEDA3DF20" type="ZooBank">672951D5E7D74D81AB9C419B811D5B97</mods:identifier>
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<treatment id="DB278FC0C29C59D587D343D9D6B7AE86" LSID="urn:lsid:zoobank.org:act:DB30A1C7-2DCE-458B-920C-56AD365203EE" httpUri="http://treatment.plazi.org/id/DB278FC0C29C59D587D343D9D6B7AE86" lastPageNumber="125" pageId="0" pageNumber="125">
<subSubSection id="F8355B80604527C628316CBF499DD37D" pageId="0" pageNumber="125" type="nomenclature">
<paragraph id="0997DC4A33C43A62756AEBAF2A50C573" pageId="0" pageNumber="125">
<taxonomicName id="8CBD624980200BF83CE06A802B451448" LSID="https://zoobank.org/DB30A1C7-2DCE-458B-920C-56AD365203EE" authority="Ota &amp; Erasmus &amp; Grutter &amp; Smit, 2024" authorityName="Ota &amp; Erasmus &amp; Grutter &amp; Smit" authorityYear="2024" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia antennacrassa" order="Isopoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="antennacrassa" status="sp. nov.">Gnathia antennacrassa</taxonomicName>
<taxonomicNameLabel id="6C8107CAA1F8D2758DA43AC833EBB0B5" pageId="0" pageNumber="125">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="7C91F9968CBC87BEE9ACDB4E0666340D" pageId="0" pageNumber="125" type="description">
<paragraph id="198C4F841FEB0C69B88C1C1B626C4FB0" pageId="0" pageNumber="125">
<figureCitation id="7101777EE8BF5959FC35A17B150A94C8" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Photograph of fixed Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675). Scale bar: 1 mm." figureDoi="10.3897/zookeys.1193.116538.figure1" httpUri="https://binary.pensoft.net/fig/996744" pageId="0" pageNumber="125">Figs 1</figureCitation>
<figureCitation id="FE1DB2C4B92AA0542F375B8F3AC8F701" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A whole body (dorsal view) B cephalosome and mandible (dorsal view) C pereonite 1, cephalosome, and mandible (left lateral view) D pleotelson (dorsal view) E left antennula F left antenna." figureDoi="10.3897/zookeys.1193.116538.figure2" httpUri="https://binary.pensoft.net/fig/996745" pageId="0" pageNumber="125">, 2</figureCitation>
<figureCitation id="BA501E26F1E59EC842592B335D263F75" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A left maxilliped (ventral view) B left pylopod (ventral view) C left pereopod 2 (lateral view) D penes (ventral view) E left pleopod 2." figureDoi="10.3897/zookeys.1193.116538.figure3" httpUri="https://binary.pensoft.net/fig/996746" pageId="0" pageNumber="125">, 3</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="72BFD171CEA415D3024955ADE1046E53" pageId="0" pageNumber="125" type="diagnosis">
<paragraph id="19C780226FA08252D499DCD7147E0D58" pageId="0" pageNumber="125">Diagnosis.</paragraph>
<paragraph id="3C9DED51F96DFCB0665EE5CCE18CD919" pageId="0" pageNumber="125">
Anterior part of body (cephalosome and pereonites 1-4) not densely covered by tubercles; frontal margin with serrated triangular mediofrontal process and two superior frontolateral processes; paraocular ornamentation not developed; pereonite 1 not reaching lateral margins of cephalon; pereonites 4-6 with two lateral lobes; epimera of pleonites 1-5 not prominent; pleotelson 0.8
<normalizedToken id="3FD6254CD0FF997BFDD2EBEBC2BA244B" originalValue="×">x</normalizedToken>
shorter than its anterior width; lateral side of pleotelson sinuate; maximum width of peduncle article of antenna 3.2
<normalizedToken id="EFBDC5505A590889296BBA40ECDF6AE4" originalValue="×">x</normalizedToken>
maximum width of flagellar article; article 1 of pylopod with two areolae; appendix masculina of pleopod 2 0.8
<normalizedToken id="678DFB9D4F3F85C02C963E6D4DA83AB2" originalValue="×">x</normalizedToken>
as long as endopod; endopod of uropodal rami extend beyond apex of pleotelson; exopod of uropodal rami almost apex of pleotelson.
</paragraph>
</subSubSection>
<subSubSection id="A17D0681E3B8296B8431E56A2F3C12D3" pageId="0" pageNumber="125" type="materials_examined">
<paragraph id="AC16B61518EA0123A266A61871AE9521" pageId="0" pageNumber="125">Material examined.</paragraph>
<paragraph id="6A260D7306F37848E4837D7A0B31DB5F" pageId="0" pageNumber="125">
<materialsCitation id="F45C4EF0C33B368BA907F5F27F025F0E" collectingDate="1996-01-18" collectorName="J. M. Black, Hartog, Cambridge, Kuo, Hiroshi Mukai" country="Australia" elevation="5" latitude="-32.0" location="Rottnest Island" longLatPrecision="928" longitude="115.541664" municipality="Thomson Bay" specimenCount="1" specimenCount-male="1" stateProvince="Western Australia" typeStatus="Holotype">
<emphasis id="B67E9E22C7C137CE834674034B21A8B5" bold="true" pageId="0" pageNumber="125">
<emphasis id="B4DFB8701620A97D48DFB37A096FE0F6" italics="true" pageId="0" pageNumber="125">
<typeStatus id="95BC0ED0FF1E1A115FA7765FF15D0325" type="holotype">Holotype</typeStatus>
</emphasis>
.
</emphasis>
<collectingCountry id="154864BDA477C371CB79703A79B3BA8A" name="Australia">Australia</collectingCountry>
<specimenCount id="36446B58E8F3DDC0CA912992D0AA033C" count="1" type="male">1♂</specimenCount>
(
<quantity id="3EE93F45355DCC67131D60EF9FEC323A" metricMagnitude="-3" metricUnit="m" metricValue="2.4" unit="mm" value="2.4">2.4 mm</quantity>
TL,
<quantity id="6FC9F648D30995079F1163B6E9DA888A" metricMagnitude="-3" metricUnit="m" metricValue="1.9" unit="mm" value="1.9">1.9 mm</quantity>
BL, dissected); sandy substrata of seagrass
<taxonomicName id="72166119B5BE6184F3854A1404C8E887" class="Liliopsida" family="Cymodoceaceae" genus="Amphibolis" kingdom="Plantae" lsidName="Amphibolis griffithii" order="Alismatales" pageId="0" pageNumber="125" phylum="Tracheophyta" rank="species" species="griffithii">
<emphasis id="0556CD69DA0E93A97B164D0017EE72E7" italics="true" pageId="0" pageNumber="125">Amphibolis griffithii</emphasis>
</taxonomicName>
(
<collectorName id="5FA6A60A92F8F1DD1CFF4F8D61EFFED9">J.M. Black</collectorName>
)
<collectorName id="874F8C1265F687FC0E2F96CEB35140EE">Hartog</collectorName>
, 1970 patch bed surrounded by the seagrass
<taxonomicName id="E65CDCBF7B6F09084A554468D8059E93" class="Bivalvia" family="Posidoniidae" genus="Posidonia" kingdom="Animalia" lsidName="Posidonia sinuosa" order="Ostreida" pageId="0" pageNumber="125" phylum="Mollusca" rank="species" species="sinuosa">
<emphasis id="EA24C00791444F8A7EDFEE7723A93B3D" italics="true" pageId="0" pageNumber="125">Posidonia sinuosa</emphasis>
</taxonomicName>
<collectorName id="F08FDA7DD2738FD5CE1D78639B40ECBA">Cambridge</collectorName>
&amp;
<collectorName id="762B64784CB5B4B75503F11C6DB12F91">Kuo</collectorName>
, 1979 bed,
<elevation id="861EFE1E4ECD2F78EFB838464A960804" metricMagnitude="0" metricUnit="m" metricValue="5.0" unit="m" value="5.0">
<quantity id="58FACE4F1EC52AB253B87A0A893ACFD4" metricMagnitude="0" metricUnit="m" metricValue="5.0" unit="m" value="5.0">5 m</quantity>
depth
</elevation>
,
<collectingMunicipality id="7AEBCB4ABDA74F223EB2D0DB545976E6">Thomson Bay</collectingMunicipality>
,
<location id="0C212FDCBA707542D72253BB3C4854C6" LSID="urn:lsid:plazi:treatment:DB278FC0C29C59D587D343D9D6B7AE86:0C212FDCBA707542D72253BB3C4854C6" country="Australia" latitude="-32.0" longLatPrecision="928" longitude="115.541664" municipality="Thomson Bay" name="Rottnest Island" stateProvince="Western Australia">Rottnest Island</location>
,
<collectingRegion id="BDA91E7622E2038C602AEA14D5A71CCA" country="Australia" name="Western Australia">Western Australia</collectingRegion>
(
<geoCoordinate id="FF75BB3E8578DDDC77BA7E492D2586B7" degrees="32" direction="south" minutes="00" orientation="latitude" precision="925" value="-32.0">32°00'S</geoCoordinate>
,
<geoCoordinate id="75C105873B2754F77FC03FF6A9C4AB3B" degrees="115" direction="east" minutes="32.5" orientation="longitude" precision="92" value="115.541664">115°32.5'E</geoCoordinate>
),
<collectingDate id="5D06C5F1A111AAE25B21EBCF0F709D5C" value="1996-01-18">18 January 1996</collectingDate>
,
<collectorName id="2095532E30052DCA139E9A56F26D04CB">Hiroshi Mukai</collectorName>
leg. (WAM C-79675).
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="BCB66F57546195E5A01D6137B1647A5F" pageId="0" pageNumber="125" type="type locality">
<paragraph id="3746DA5C75B49F64A5BBA831B3184DF9" pageId="0" pageNumber="125">Type locality.</paragraph>
<paragraph id="3DD562B9AFD11D5B537C60B006B4C8E6" pageId="0" pageNumber="125">
Thomson Bay, Rottnest Island, Western Australia (
<geoCoordinate id="5985DA1719C4E5008A69CF4A9C8EFC55" degrees="32" direction="south" minutes="00" orientation="latitude" precision="925" value="-32.0">32°00'S</geoCoordinate>
,
<geoCoordinate id="D6324AA2D7904E599F9C4CB800A8D998" degrees="115" direction="east" minutes="32.5" orientation="longitude" precision="92" value="115.541664">115°32.5'E</geoCoordinate>
).
</paragraph>
</subSubSection>
<subSubSection id="C9116F6AA759F79918CD7D2A96C4A3D7" pageId="0" pageNumber="125" type="description">
<paragraph id="9E08E41CE85B818CCB7E195811E44BD4" pageId="0" pageNumber="125">Description.</paragraph>
<paragraph id="E132873EBC433B780BB175C7D35B8ECC" pageId="0" pageNumber="125">
<emphasis id="A7B1C43E0803D644557B865673078C18" bold="true" italics="true" pageId="0" pageNumber="125">Body</emphasis>
(Figs
<figureCitation id="AD6899229DC28E67178B85E904B64C6E" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Photograph of fixed Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675). Scale bar: 1 mm." figureDoi="10.3897/zookeys.1193.116538.figure1" httpUri="https://binary.pensoft.net/fig/996744" pageId="0" pageNumber="125">1</figureCitation>
,
<figureCitation id="C9DC0F81ACE60865B75252308D9B2A42" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A whole body (dorsal view) B cephalosome and mandible (dorsal view) C pereonite 1, cephalosome, and mandible (left lateral view) D pleotelson (dorsal view) E left antennula F left antenna." figureDoi="10.3897/zookeys.1193.116538.figure2" httpUri="https://binary.pensoft.net/fig/996745" pageId="0" pageNumber="125">2A</figureCitation>
) 2.7
<normalizedToken id="281395EE7317FB58C751E4A0E54734B0" originalValue="×">x</normalizedToken>
as long as greatest width, widest at pereonite 2; dorsal surfaces smooth, sparsely setose.
<emphasis id="FC3864BADD4816BFDA9ADF99351EBB10" bold="true" italics="true" pageId="0" pageNumber="125">Cephalosome</emphasis>
(Fig.
<figureCitation id="9CD761A95398D185BD2BD8B4A5B7AA98" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Photograph of fixed Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675). Scale bar: 1 mm." figureDoi="10.3897/zookeys.1193.116538.figure1" httpUri="https://binary.pensoft.net/fig/996744" pageId="0" pageNumber="125">1A-C</figureCitation>
) rectangular, 0.7
<normalizedToken id="7B504763876A13E433468F27E415B7B9" originalValue="×">x</normalizedToken>
as long as wide, lateral margins parallel, posterior margin concave; dorsal surface tubercles around eyes; dorsal sulcus wide, shallow, short; translucent region present, elliptical; paraocular ornamentation not developed, posterior median tubercle absent.
<emphasis id="287E7A5115BC7D880D75A526CFB69F93" bold="true" italics="true" pageId="0" pageNumber="125">Frontolateral processes</emphasis>
present.
<emphasis id="7F2F479D344AE25DD3FEC4378E798B06" bold="true" italics="true" pageId="0" pageNumber="125">Frontal margin</emphasis>
(Fig.
<figureCitation id="31FD5C74275CC14B49F4575FDAE6D168" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Photograph of fixed Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675). Scale bar: 1 mm." figureDoi="10.3897/zookeys.1193.116538.figure1" httpUri="https://binary.pensoft.net/fig/996744" pageId="0" pageNumber="125">1B</figureCitation>
) straight, median point with process.
<emphasis id="DF1E008640DC5308B3E2F3C066677262" bold="true" italics="true" pageId="0" pageNumber="125">External scissura</emphasis>
present, wide, shallow.
<emphasis id="69ECBBAE37778254BB6BD129AC0960BD" bold="true" italics="true" pageId="0" pageNumber="125">Mediofrontal process</emphasis>
present, strong, serrate triangular, without ventral notch and fine setae.
<emphasis id="4EBFE735042E972EFB840182FFC68879" bold="true" italics="true" pageId="0" pageNumber="125">Superior frontolateral process</emphasis>
present, single, strong, conical, with three pairs of long simple setae.
<emphasis id="481580CB6951CA84747CB2E31D675CDF" bold="true" italics="true" pageId="0" pageNumber="125">Inferior frontolateral process</emphasis>
absent.
<emphasis id="CACECE5820F0D1C98973E6C27A84F876" bold="true" italics="true" pageId="0" pageNumber="125">Supraocular lobe</emphasis>
not pronounced; accessory supraocular lobe not pronounced.
<emphasis id="153682B93DC06028D025424B93D5D054" bold="true" italics="true" pageId="0" pageNumber="125">Eyes</emphasis>
present, round, 0.3
<normalizedToken id="A0353E7962C5688E6E340AD7014C4E9B" originalValue="×">x</normalizedToken>
as long as cephalosome length, contiguous with head surface, ommatidia arranged in rows, eye colour faded.
</paragraph>
<caption id="1F1D236EE8AEBF13900EF677B41D038E" doi="10.3897/zookeys.1193.116538.figure1" httpUri="https://binary.pensoft.net/fig/996744" pageId="0" pageNumber="125" start="Figure 1" startId="F1">
<paragraph id="4A8ACEB3D6289102B181DA2182F411FB" pageId="0" pageNumber="125">
<emphasis id="C40BD319CA7138C993FBBE9EBD7F78CE" bold="true" pageId="0" pageNumber="125">Figure 1.</emphasis>
Photograph of fixed
<taxonomicName id="008C2924B71D592C88AB4D821E99A817" authorityName="Ota &amp; Erasmus &amp; Grutter &amp; Smit" authorityYear="2024" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia antennacrassa" order="Isopoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="antennacrassa">
<emphasis id="B5EAA6CC86283695C97DAE2071F54844" italics="true" pageId="0" pageNumber="125">Gnathia antennacrassa</emphasis>
</taxonomicName>
sp. nov. (holotype, WAM C-79675). Scale bar: 1 mm.
</paragraph>
</caption>
<caption id="F4B73EAD43A0C4E4EC2A1CB94685D8FA" doi="10.3897/zookeys.1193.116538.figure2" httpUri="https://binary.pensoft.net/fig/996745" pageId="0" pageNumber="125" start="Figure 2" startId="F2">
<paragraph id="523EDD4461557B467BF3BA1E09D8446F" pageId="0" pageNumber="125">
<emphasis id="69E1459DC8E6246D6F64473101AC7228" bold="true" pageId="0" pageNumber="125">Figure 2.</emphasis>
<taxonomicName id="D4C4AF33E76A845463FE9DE8A1CC1348" authorityName="Ota &amp; Erasmus &amp; Grutter &amp; Smit" authorityYear="2024" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia antennacrassa" order="Isopoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="antennacrassa">
<emphasis id="713A70AECC747DD242F66B057A68D712" italics="true" pageId="0" pageNumber="125">Gnathia antennacrassa</emphasis>
</taxonomicName>
sp. nov. (holotype, WAM C-79675)
<emphasis id="44D3E4C6E5882EB9916A6E1DFECBA36B" bold="true" pageId="0" pageNumber="125">A</emphasis>
whole body (dorsal view)
<emphasis id="B784E93D71467B3185D33C27B7801950" bold="true" pageId="0" pageNumber="125">B</emphasis>
cephalosome and mandible (dorsal view)
<emphasis id="243FAAFD0DBC3471F79B32A1EEA2ECF1" bold="true" pageId="0" pageNumber="125">C</emphasis>
pereonite 1, cephalosome, and mandible (left lateral view)
<emphasis id="0230A3B7C24530EED426E24D34511B0A" bold="true" pageId="0" pageNumber="125">D</emphasis>
pleotelson (dorsal view)
<emphasis id="7C83B92772E5DFD600D0757DD1789559" bold="true" pageId="0" pageNumber="125">E</emphasis>
left antennula
<emphasis id="2253004B2068D9251CFD184E4CAA1937" bold="true" pageId="0" pageNumber="125">F</emphasis>
left antenna.
</paragraph>
</caption>
<paragraph id="515F52D541E923CCB0CA7CA06E400FA8" pageId="0" pageNumber="125">
<emphasis id="4D6726BAE80489F0A788A080F61EF692" bold="true" italics="true" pageId="0" pageNumber="125">Pereon</emphasis>
(Figs
<figureCitation id="44852E5A9CF91A299F2F36074327FA50" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Photograph of fixed Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675). Scale bar: 1 mm." figureDoi="10.3897/zookeys.1193.116538.figure1" httpUri="https://binary.pensoft.net/fig/996744" pageId="0" pageNumber="125">1</figureCitation>
,
<figureCitation id="7B1162FBBE50E0F53DE951631CC51EE0" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A whole body (dorsal view) B cephalosome and mandible (dorsal view) C pereonite 1, cephalosome, and mandible (left lateral view) D pleotelson (dorsal view) E left antennula F left antenna." figureDoi="10.3897/zookeys.1193.116538.figure2" httpUri="https://binary.pensoft.net/fig/996745" pageId="0" pageNumber="125">2A</figureCitation>
) lateral margins narrowing posteriorly, with few setae; anteriorly smooth.
<emphasis id="0BC6336FB2DA7F62FB20F9AB861E9F18" bold="true" italics="true" pageId="0" pageNumber="125">Pereonite 1</emphasis>
not fused dorsally with cephalosome.
<emphasis id="6F9EBC3FFCC7E4BE9012F59972215410" bold="true" italics="true" pageId="0" pageNumber="125">Pereonite 2</emphasis>
wider than pereonite 1.
<emphasis id="E13FC2D6F5DC578E65545D1E7ADBDD00" bold="true" italics="true" pageId="0" pageNumber="125">Pereonite 4</emphasis>
with anterior constriction, median groove present.
<emphasis id="7305F879534E26CDA61C6D54F42D3E86" bold="true" italics="true" pageId="0" pageNumber="125">Areae laterales</emphasis>
present on pereonite 4 and pereonite 5, with two lateral lobes, dorsal sulcus wide.
<emphasis id="FDDC17DA9129526FC81E13C4B2BE6362" bold="true" italics="true" pageId="0" pageNumber="125">Pereonite 6</emphasis>
with strongly developed lobi laterales, lobuii weak, conical.
<emphasis id="B8B65AF26AB4A77CC061BFFB2E6FE7D4" bold="true" italics="true" pageId="0" pageNumber="125">Pereonite 7</emphasis>
short, narrow, and overlapping pleonite 1.
<emphasis id="CAF7699A6F71660C5F5E051267B0B809" bold="true" italics="true" pageId="0" pageNumber="125">Pleon</emphasis>
epimera not dorsally visible on pleonites.
<emphasis id="A2F355D125CD8E0A2D61F02E10BC6EA8" bold="true" italics="true" pageId="0" pageNumber="125">Pleonites</emphasis>
(Figs
<figureCitation id="19677AB66C6E2FD3602C38EEBBB9A067" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Photograph of fixed Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675). Scale bar: 1 mm." figureDoi="10.3897/zookeys.1193.116538.figure1" httpUri="https://binary.pensoft.net/fig/996744" pageId="0" pageNumber="125">1</figureCitation>
,
<figureCitation id="E0F97AA290E75F1656FC2775D247EC8F" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A whole body (dorsal view) B cephalosome and mandible (dorsal view) C pereonite 1, cephalosome, and mandible (left lateral view) D pleotelson (dorsal view) E left antennula F left antenna." figureDoi="10.3897/zookeys.1193.116538.figure2" httpUri="https://binary.pensoft.net/fig/996745" pageId="0" pageNumber="125">2A</figureCitation>
) lateral margins with one pair of simple setae, with two pairs of simple setae medially.
<emphasis id="AAF9533E0B205DA7C2E0B0D30EBB81BB" bold="true" italics="true" pageId="0" pageNumber="125">Pleotelson</emphasis>
(Fig.
<figureCitation id="50B99D93A4719AEFA92A96983EA89398" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A whole body (dorsal view) B cephalosome and mandible (dorsal view) C pereonite 1, cephalosome, and mandible (left lateral view) D pleotelson (dorsal view) E left antennula F left antenna." figureDoi="10.3897/zookeys.1193.116538.figure2" httpUri="https://binary.pensoft.net/fig/996745" pageId="0" pageNumber="125">2D</figureCitation>
) 0.8
<normalizedToken id="DE9E861F8C08F4903C25F53A22AF2900" originalValue="×">x</normalizedToken>
as long as anterior width, not covered in pectinate scales; lateral margins smooth, anterolateral margins concave, without submarginal seta; posterolateral margin concave, with one pair of submarginal setae, mid-dorsal surface with a pair of sub-median setae, apex with two setae.
</paragraph>
<paragraph id="CB199546104AFBD600D4DA5BD155ADCA" pageId="0" pageNumber="125">
<emphasis id="C0AC603078E5E65246B3B28152074447" bold="true" italics="true" pageId="0" pageNumber="125">Antennula</emphasis>
(Fig.
<figureCitation id="1F59A5AAACDABBA603D66099ECAFB152" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A whole body (dorsal view) B cephalosome and mandible (dorsal view) C pereonite 1, cephalosome, and mandible (left lateral view) D pleotelson (dorsal view) E left antennula F left antenna." figureDoi="10.3897/zookeys.1193.116538.figure2" httpUri="https://binary.pensoft.net/fig/996745" pageId="0" pageNumber="125">2E</figureCitation>
) composed of four peduncular and three flagellar articles, 0.8
<normalizedToken id="EAB90E25A1A70C6449BE2B8952B8291D" originalValue="×">x</normalizedToken>
as long as antenna; peduncle article 2 0.6
<normalizedToken id="F345B6A482A6C82ECF440C8D55379571" originalValue="×">x</normalizedToken>
as long as article 1; article 3 2.1
<normalizedToken id="F269E112653F6A40D51832CF847E6AF7" originalValue="×">x</normalizedToken>
as long as article 2, 2.9
<normalizedToken id="5D08D91BC58FCBD6C2D2CFCC0384A1A1" originalValue="×">x</normalizedToken>
as long as wide; flagellum as long article 3; article 3 with one aesthetasc and one simple seta; article 4 terminating with one aesthetasc and four simple setae.
<emphasis id="9580C1B1B722461C869E852B2ED05B1C" bold="true" italics="true" pageId="0" pageNumber="125">Antenna</emphasis>
(Fig.
<figureCitation id="6F2BB989C38FE00E2E0A0C63D177B1BF" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A whole body (dorsal view) B cephalosome and mandible (dorsal view) C pereonite 1, cephalosome, and mandible (left lateral view) D pleotelson (dorsal view) E left antennula F left antenna." figureDoi="10.3897/zookeys.1193.116538.figure2" httpUri="https://binary.pensoft.net/fig/996745" pageId="0" pageNumber="125">2F</figureCitation>
) composed of four peduncular and seven flagellar articles; maximum width of peduncle article 3.2
<normalizedToken id="18CADE8A5CB3436332367C0BBB9471FB" originalValue="×">x</normalizedToken>
the maximum width of flagellar articles; peduncle article 3 1.7
<normalizedToken id="B549B8BA1F24C90217AA234C0E75D045" originalValue="×">x</normalizedToken>
as long as wide, 0.7
<normalizedToken id="411D8376975756EE31EBAF2DA02DDE6F" originalValue="×">x</normalizedToken>
as long as article 2, with one penicillate seta, and nine simple setae; article 4 as long as article 3, 1.5
<normalizedToken id="B7ADD432CFD6A51A5B2735F61DB80BBC" originalValue="×">x</normalizedToken>
as long as wide, and with 20 simple setae; flagellum 1.2
<normalizedToken id="F0F86E0366616837C5BEBE74705EF5FE" originalValue="×">x</normalizedToken>
as long as article 4, with seven articles, terminating with two simple setae.
</paragraph>
<paragraph id="2BCC45D035A05FB276DDEDA62609BDE8" pageId="0" pageNumber="125">
<emphasis id="6638D60002C53B3147DD8AA37A04C863" bold="true" italics="true" pageId="0" pageNumber="125">Mandible</emphasis>
(Figs
<figureCitation id="E324332A03BC39C4043764B97F737191" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Photograph of fixed Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675). Scale bar: 1 mm." figureDoi="10.3897/zookeys.1193.116538.figure1" httpUri="https://binary.pensoft.net/fig/996744" pageId="0" pageNumber="125">1</figureCitation>
,
<figureCitation id="46DE5B8293D3D39B29691E911F9AA33C" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A whole body (dorsal view) B cephalosome and mandible (dorsal view) C pereonite 1, cephalosome, and mandible (left lateral view) D pleotelson (dorsal view) E left antennula F left antenna." figureDoi="10.3897/zookeys.1193.116538.figure2" httpUri="https://binary.pensoft.net/fig/996745" pageId="0" pageNumber="125">2A-C</figureCitation>
) 0.7
<normalizedToken id="30D579CE4FD02DD867411D155F84E5AC" originalValue="×">x</normalizedToken>
as long as cephalosome; triangular, weakly mesially curved; apex 20% total length; mandibular seta present.
<emphasis id="BD434DD3B3AA43CCEB0E159DBCF87714" bold="true" italics="true" pageId="0" pageNumber="125">Carina</emphasis>
present, smooth along proximal half.
<emphasis id="06BB07881A445671BCBA06D314741231" bold="true" italics="true" pageId="0" pageNumber="125">Incisor</emphasis>
elevated, standing clear of surface.
<emphasis id="1C1201D4EF2ADFAACA417F39B84E2177" bold="true" italics="true" pageId="0" pageNumber="125">Blade</emphasis>
present, dentate, weakly convex, straight, dentate along 58% of margin.
<emphasis id="E03385B5996B23413E6D2D54DDAFA918" bold="true" italics="true" pageId="0" pageNumber="125">Pseudoblade</emphasis>
, internal lobe, and dorsal lobe absent; basal neck short; erisma present; lamina dentata not visible in dorsal view.
</paragraph>
<paragraph id="4DFA6C416A40262810A21207B8256AE3" pageId="0" pageNumber="125">
<emphasis id="A529CCF8B3BF5E668B91B194920E1378" bold="true" italics="true" pageId="0" pageNumber="125">Maxilliped</emphasis>
(Fig.
<figureCitation id="CC129D82868F762FAF27C05B8DC1DEB4" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A left maxilliped (ventral view) B left pylopod (ventral view) C left pereopod 2 (lateral view) D penes (ventral view) E left pleopod 2." figureDoi="10.3897/zookeys.1193.116538.figure3" httpUri="https://binary.pensoft.net/fig/996746" pageId="0" pageNumber="125">3A</figureCitation>
). Article 1 lateral margin with continuous marginal scale-setae; article 2 lateral margin with three plumose setae; article 3 lateral margin with eight plumose setae; article 4 lateral margin with five plumose setae; 5 lateral margin with six plumose setae, and three simple setae; endite extending to distal margin of article 2.
</paragraph>
<caption id="C5CB3F9A32C0D142B76D5AB0753AB300" doi="10.3897/zookeys.1193.116538.figure3" httpUri="https://binary.pensoft.net/fig/996746" pageId="0" pageNumber="125" start="Figure 3" startId="F3">
<paragraph id="D19CFA791D519BDC0911AA3081FF34F6" pageId="0" pageNumber="125">
<emphasis id="1425477894D801042354A6390093DA89" bold="true" pageId="0" pageNumber="125">Figure 3.</emphasis>
<taxonomicName id="E364EB8100E5DD301DB5B2A3DB9D19CF" authorityName="Ota &amp; Erasmus &amp; Grutter &amp; Smit" authorityYear="2024" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia antennacrassa" order="Isopoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="antennacrassa">
<emphasis id="AC07A8555A9EA22A3DBC89E11483F390" italics="true" pageId="0" pageNumber="125">Gnathia antennacrassa</emphasis>
</taxonomicName>
sp. nov. (holotype, WAM C-79675)
<emphasis id="4BA114FDFF8703FF71693FD65608A666" bold="true" pageId="0" pageNumber="125">A</emphasis>
left maxilliped (ventral view)
<emphasis id="A8EE3B9453719DFF0889FF3C2AE88B47" bold="true" pageId="0" pageNumber="125">B</emphasis>
left pylopod (ventral view)
<emphasis id="897FEBAE073C16B85B9815BE67101553" bold="true" pageId="0" pageNumber="125">C</emphasis>
left pereopod 2 (lateral view)
<emphasis id="BC962B4623996D33EDC92D580DDC6C88" bold="true" pageId="0" pageNumber="125">D</emphasis>
penes (ventral view)
<emphasis id="CF74C5EEFD8EA967921603D838796F0D" bold="true" pageId="0" pageNumber="125">E</emphasis>
left pleopod 2.
</paragraph>
</caption>
<paragraph id="FD831CA9E8157E28B4EF03F1AECB172E" pageId="0" pageNumber="125">
<emphasis id="1207319B85A218DE28488925AFF276C9" bold="true" italics="true" pageId="0" pageNumber="125">Pylopod</emphasis>
(Fig.
<figureCitation id="01BAC34AC79E50601B656703C716FDC5" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A left maxilliped (ventral view) B left pylopod (ventral view) C left pereopod 2 (lateral view) D penes (ventral view) E left pleopod 2." figureDoi="10.3897/zookeys.1193.116538.figure3" httpUri="https://binary.pensoft.net/fig/996746" pageId="0" pageNumber="125">3B</figureCitation>
). Article 1 2.0
<normalizedToken id="EF4D9F7C4ABDC875D48809993D21EB43" originalValue="×">x</normalizedToken>
as long as wide; with two distinct areolae; without distolateral lobe; posterior and lateral margins forming rounded curve; lateral margin with 24 plumose setae; mesial margin with continuous fringe setae; distal margin with five simple setae; article 2 1.2
<normalizedToken id="380A6C48FD37FF7C99E55023DB2C39B6" originalValue="×">x</normalizedToken>
as long as wide, with five simple setae; article 3 semicircular with two short setae.
</paragraph>
<paragraph id="5F847BFCFE5F33305248E8F8D11C5083" pageId="0" pageNumber="125">
<emphasis id="4DE3F76A46B2B64881344A8A3E01FFB3" bold="true" italics="true" pageId="0" pageNumber="125">Pereopod 2</emphasis>
(Fig.
<figureCitation id="8C85EE278DC8D486280CC7DD6AD7E430" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A left maxilliped (ventral view) B left pylopod (ventral view) C left pereopod 2 (lateral view) D penes (ventral view) E left pleopod 2." figureDoi="10.3897/zookeys.1193.116538.figure3" httpUri="https://binary.pensoft.net/fig/996746" pageId="0" pageNumber="125">3C</figureCitation>
) sparsely covered with short simple setae on basis and ischium, inferior margins with prominent tubercles on basis to carpus; basis 1.3
<normalizedToken id="0B0829594001E0BDAACEEB73B2BC56E1" originalValue="×">x</normalizedToken>
as long as greatest width, superior margin with three simple setae, inferior margin with two simple setae; ischium as long as basis, 2.2
<normalizedToken id="7CFAA5512817A1D2DC95E987D79B2039" originalValue="×">x</normalizedToken>
as long as wide, superior margin with five simple setae; merus 0.4
<normalizedToken id="F2217A7FF58C79577FE8370D0D926F37" originalValue="×">x</normalizedToken>
as long as ischium, 1.1
<normalizedToken id="B26F0ACF2CEF39121551D14216B25E2F" originalValue="×">x</normalizedToken>
as long as wide, superior margin with four simple setae, and bulbous protrusion, inferior margin with three simple setae; carpus 1.1
<normalizedToken id="4241C1BBC6C7BB64C8E369351C52CBA0" originalValue="×">x</normalizedToken>
as long as ischium, 0.9
<normalizedToken id="5F112BCB8EE46792D9BE3698E690BF18" originalValue="×">x</normalizedToken>
as long as wide, superior margin with three setae, inferior margin with five setae; propodus 1.6
<normalizedToken id="3BDD1A68838629D852309379708CC04D" originalValue="×">x</normalizedToken>
as long as ischium, 2.6
<normalizedToken id="9D2B5A14429A3D457D8FFDA949B105FE" originalValue="×">x</normalizedToken>
as long as wide, superior margin with two simple setae and one penicillate seta, inferior margin with three pectinate scales, and two robust setae; dactylus 0.4
<normalizedToken id="C0E2784D59930ECB5910459A1EAB9FB2" originalValue="×">x</normalizedToken>
as long as propodus.
<emphasis id="7EDE149E230C86D4177EFBF4117ADDAF" bold="true" pageId="0" pageNumber="125">
<emphasis id="103416F7A3D359F281260C6F27215253" italics="true" pageId="0" pageNumber="125">Pereopods 3</emphasis>
and
<emphasis id="4903AA567846DBFAA3A432D18366602E" italics="true" pageId="0" pageNumber="125">5</emphasis>
</emphasis>
similar proportions of each article as pereopod 2.
<emphasis id="34F220DD78C8516CEE21ED3F1C14434E" bold="true" italics="true" pageId="0" pageNumber="125">Pereopod 4</emphasis>
longer than pereopod 2, basis, ischium, and merus slightly longer than those of pereopod 2; propodus somewhat rounded.
<emphasis id="ED1CC466BC35ABDCCAD63601EEC04124" bold="true" italics="true" pageId="0" pageNumber="125">Pereopod 6</emphasis>
slightly shorter than pereopod 2, basis shorter than that of pereopod 2, distal margin of merus rounded.
</paragraph>
<paragraph id="97563C50CE8379F8CC6E5E420D1DFE74" pageId="0" pageNumber="125">
<emphasis id="6AC02D54D00560B98757CF7208184695" bold="true" italics="true" pageId="0" pageNumber="125">Penes</emphasis>
(Fig.
<figureCitation id="E0CD38A77599920FF67E50DCAF4C5896" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A left maxilliped (ventral view) B left pylopod (ventral view) C left pereopod 2 (lateral view) D penes (ventral view) E left pleopod 2." figureDoi="10.3897/zookeys.1193.116538.figure3" httpUri="https://binary.pensoft.net/fig/996746" pageId="0" pageNumber="125">3D</figureCitation>
) with two small papillae, 0.5
<normalizedToken id="926EB59E9AA75219D53A05FEB7006288" originalValue="×">x</normalizedToken>
as long as basal width.
</paragraph>
<paragraph id="E479A2357F8FA4B968C3F7254DE5F349" pageId="0" pageNumber="125">
<emphasis id="5EE28575588D790D53B1F6D2CA7B5639" bold="true" italics="true" pageId="0" pageNumber="125">Pleopod 2</emphasis>
(Fig.
<figureCitation id="C0C2F9323D7D829478358FFEECAE509F" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675) A left maxilliped (ventral view) B left pylopod (ventral view) C left pereopod 2 (lateral view) D penes (ventral view) E left pleopod 2." figureDoi="10.3897/zookeys.1193.116538.figure3" httpUri="https://binary.pensoft.net/fig/996746" pageId="0" pageNumber="125">3E</figureCitation>
).
<emphasis id="1FBE9C629DAD0D465F483B38E8A1B6C0" bold="true" italics="true" pageId="0" pageNumber="125">Exopod</emphasis>
2.2
<normalizedToken id="87D787B670591A181DC5FA74AE516E82" originalValue="×">x</normalizedToken>
as long as wide, distally broadly rounded, with nine plumose setae;
<emphasis id="2D8DAE1153CD9451E570D0087F00F8F4" bold="true" italics="true" pageId="0" pageNumber="125">endopod</emphasis>
1.8
<normalizedToken id="A8C2FE8586B8682245EB6F0832C39726" originalValue="×">x</normalizedToken>
as long as wide, distally narrowly rounded, with seven plumose setae; appendix masculina present, with parallel margins, 0.8
<normalizedToken id="AC92F6B007B22E58A78FCD581C19D746" originalValue="×">x</normalizedToken>
as long as endopod, distally narrowly rounded;
<emphasis id="5E5C31153B53CA9402D0E3C9F768570E" bold="true" italics="true" pageId="0" pageNumber="125">peduncle</emphasis>
0.5
<normalizedToken id="D11142D61651329DFBBC3F99C16F3D50" originalValue="×">x</normalizedToken>
as wide as long, mesial margin with two coupling setae, lateral margin with one simple seta. All pleopods similar in shape; exopods each with eight or nine plumose setae; endopods each with 7-9 plumose setae.
</paragraph>
<paragraph id="43C5AF7D5D2F6D714043BEAA489EDE8E" pageId="0" pageNumber="125">
<emphasis id="1C143227C2DEB07636B386309702DA75" bold="true" italics="true" pageId="0" pageNumber="125">Uropod</emphasis>
(Fig.
<figureCitation id="689949A371589C88A82BD5480384C906" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Photograph of fixed Gnathia antennacrassa sp. nov. (holotype, WAM C- 79675). Scale bar: 1 mm." figureDoi="10.3897/zookeys.1193.116538.figure1" httpUri="https://binary.pensoft.net/fig/996744" pageId="0" pageNumber="125">1D</figureCitation>
).
<emphasis id="27C5092FEAE6AFE867DC8632E1CE9ED3" bold="true" italics="true" pageId="0" pageNumber="125">Peduncle</emphasis>
without dorsal setae.
<emphasis id="15C6E5C75E8BA142266F59FC79B57441" bold="true" italics="true" pageId="0" pageNumber="125">Uropodal endopod</emphasis>
1.6
<normalizedToken id="0763DC8C2ADE992AB35E7CDE0DB96A83" originalValue="×">x</normalizedToken>
as long as greatest width, apex broadly rounded, extending beyond apex of the pleotelson, dorsally with five penicillate setae; lateral and proximomesial margin with seven plumose and three simple setae.
<emphasis id="015C337D570BF7B53BAE87711015EF9C" bold="true" italics="true" pageId="0" pageNumber="125">Uropodal exopod</emphasis>
not extending to end of endopod, 3.8
<normalizedToken id="591EBCFC70301EBF5F32154B755DD4D5" originalValue="×">x</normalizedToken>
as long as greatest width, apex broadly rounded, reaching almost apex of pleotelson; lateral and proximomesial margin with four plumose and seven simple setae.
</paragraph>
</subSubSection>
<subSubSection id="58DA2CE7A60FC0968E5F045CD18E83B4" pageId="0" pageNumber="125" type="distribution">
<paragraph id="553B65B0735F8983D53B2A3C76991F41" pageId="0" pageNumber="125">Distribution.</paragraph>
<paragraph id="C7385C8A1D8FE3D070D2A5CA55742651" pageId="0" pageNumber="125">Known only from the type locality.</paragraph>
</subSubSection>
<subSubSection id="349BFFFC91D4427A3AA25458B9FC8DFA" pageId="0" pageNumber="125" type="habitat">
<paragraph id="B93C005F8F0320456AA79589605D3C12" pageId="0" pageNumber="125">Habitat of adults.</paragraph>
<paragraph id="4E5BBF1FECE690C404657A7A19AE6751" pageId="0" pageNumber="125">Sandy substrata of seagrass; 5 m depth.</paragraph>
</subSubSection>
<subSubSection id="B29B970C443F2B084EE1589396878065" pageId="0" pageNumber="125" type="host">
<paragraph id="7B529D91FC933BD3796AD2446AA9556B" pageId="0" pageNumber="125">Hosts.</paragraph>
<paragraph id="7C2A6BCEA2F04E6937398B70DF2A168F" pageId="0" pageNumber="125">Unknown.</paragraph>
</subSubSection>
<subSubSection id="9E3995EAD33D245A8C420A64B2AD3FC2" pageId="0" pageNumber="125" type="etymology">
<paragraph id="740A361BEBC225D83DBCB98A79A930CD" pageId="0" pageNumber="125">Etymology.</paragraph>
<paragraph id="5443583E39032D7D5944993FEAC36A2C" pageId="0" pageNumber="125">
The specific name,
<taxonomicName id="2D2D4AAD8434064CA06B5617AD29A578" authorityName="Ota &amp; Erasmus &amp; Grutter &amp; Smit" authorityYear="2024" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia antennacrassa" order="Isopoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="antennacrassa">
<emphasis id="88DF21F6461E53960D9EF47605ACFA81" italics="true" pageId="0" pageNumber="125">Gnathia antennacrassa</emphasis>
</taxonomicName>
, is derived from Latin, meaning &quot;stout antenna&quot;.
</paragraph>
</subSubSection>
<subSubSection id="AEC74C0876139C37DC47A9626EED2257" pageId="0" pageNumber="125" type="remarks">
<paragraph id="D075E04FF1E4E21694DEA3152B179976" pageId="0" pageNumber="125">Remarks.</paragraph>
<paragraph id="12AD91D44B3A2EB398D15A57D210DFDF" pageId="0" pageNumber="125">
Among the other
<taxonomicName id="ECAFC5ECF11596E7AEDCC44776EA0598" authorityName="Leach" authorityYear="1814" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia" order="Isopoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="genus">
<emphasis id="CD05E3CF90301CE235E05EA291CA242F" italics="true" pageId="0" pageNumber="125">Gnathia</emphasis>
</taxonomicName>
species worldwide,
<taxonomicName id="CD171E47F8E332D8E6EEC6F539623D3E" lsidName="G. illepida" pageId="0" pageNumber="125" rank="species" species="illepida">
<emphasis id="0D86E6A221E054CAE0B5514DD2F74F53" italics="true" pageId="0" pageNumber="125">G. illepida</emphasis>
</taxonomicName>
Monod, 1923 is similar to
<taxonomicName id="F8CE7A13ACB65AC9A4CBFA7F637F53AD" lsidName="G. antennacrassa" pageId="0" pageNumber="125" rank="species" species="antennacrassa">
<emphasis id="CA1DC2DCF7BDA543C35D6C825A7574A1" italics="true" pageId="0" pageNumber="125">G. antennacrassa</emphasis>
</taxonomicName>
sp. nov., but differs in that the tubercles densely cover the anterior part of the body (cephalosome and pereonites 1-4), the paraocular ornamentation is developed with several distinct tubercles and setae, and the maximum width of peduncle articles of the antenna is 2.4
<normalizedToken id="6FCBA0B8416029339D15339142951169" originalValue="×">x</normalizedToken>
of that of the flagellar articles (
<bibRefCitation id="C6BD434B8DE5B3C82C7960D6B59E0777" author="Monod, T" journalOrPublisher="Memories de la Societe des Sciences Naturelles du Maroc" pageId="0" pageNumber="125" pagination="1 - 668" refId="B18" refString="Monod, T, 1926. Les Gnathiidae. Memories de la Societe des Sciences Naturelles du Maroc 13: 1 - 668" title="Les Gnathiidae." volume="13" year="1926">Monod 1926</bibRefCitation>
).
</paragraph>
<paragraph id="CA370B499E2458F50DE044FB409174AC" pageId="0" pageNumber="125">
<taxonomicName id="D1B7DBAFF60A19F6A2FE3FFE1141FDD4" authorityName="Muller" authorityYear="1988" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia vellosa" order="Isopoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="vellosa">
<emphasis id="E438008C9840EF7D33F7BE1C97B510C6" italics="true" pageId="0" pageNumber="125">Gnathia vellosa</emphasis>
</taxonomicName>
<normalizedToken id="1FC18E0A56CF9C8C82FFF48CB26BE85A" originalValue="Müller">Mueller</normalizedToken>
, 1988 is also similar, but differ in that tubercles and long setae densely cover the anterior part of the cephalosome and pereonites 2, 3, and anterior part of pereonite 4; the maximum width of peduncle articles of antenna is 2.4
<normalizedToken id="BC6DEA11BCBA5E0470AB61EA099AF98C" originalValue="×">x</normalizedToken>
that of flagellar articles; and three areolae are present on article 1 of the pylopod (
<bibRefCitation id="1D975D611C2C6E726EA929808AAE67B3" DOI="https://doi.org/10.1163/26660644-05801008" author="Mueller, HG" journalOrPublisher="Bijdragen tot de Dierkunde" pageId="0" pageNumber="125" pagination="88 - 104" refId="B19" refString="Mueller, HG, 1988. The genus Gnathia Leach (Isopoda) from the Santa Marta area, Northern Colombia, with a review of Gnathiidea from the Caribbean Sea and Gulf of Mexico. Bijdragen tot de Dierkunde 58 (1): 88 - 104, DOI: https://doi.org/10.1163/26660644-05801008" title="The genus Gnathia Leach (Isopoda) from the Santa Marta area, Northern Colombia, with a review of Gnathiidea from the Caribbean Sea and Gulf of Mexico." url="https://doi.org/10.1163/26660644-05801008" volume="58" year="1988">
<normalizedToken id="CCB917A04CC9D7A48D9169466DA2CCAA" originalValue="Müller">Mueller</normalizedToken>
1988
</bibRefCitation>
).
</paragraph>
<paragraph id="359150DBF3A62A3CB2610E3A9CFADAE5" pageId="0" pageNumber="125">
<taxonomicName id="8BA0A336EB58A03EB89FC3E6FB5EE4FD" authorityName="Kensley, Schotte &amp; Poore" authorityYear="2009" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia luxata" order="Isopoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="luxata">
<emphasis id="9F31B34304F163737ECB431A5911F1D5" italics="true" pageId="0" pageNumber="125">Gnathia luxata</emphasis>
</taxonomicName>
Kensley, Schotte &amp; Poore, 2009 differs from our new species as it has three processes on the frontal border but the mesial lobe is present on the mandible and, similarly to
<taxonomicName id="15DED62D277378706C9298F82A285EB9" lsidName="G. vellosa" pageId="0" pageNumber="125" rank="species" species="vellosa">
<emphasis id="D199DD12A68FE14B1CCA1ECB7CBE6C81" italics="true" pageId="0" pageNumber="125">G. vellosa</emphasis>
</taxonomicName>
, it has three areolae present on article 1 of the pylopod (
<bibRefCitation id="AB965435E4F02F49277518EEB21E4AF5" DOI="https://doi.org/10.2988/07-16.1" author="Kensley, B" journalOrPublisher="Proceedings of the Biological Society of Washington" pageId="0" pageNumber="125" pagination="32 - 51" refId="B16" refString="Kensley, B, Schotte, M, Poore, GC, 2009. Gnathiid isopods (Crustacea: Isopoda: Gnathiidae), mostly new, from the Indian Ocean. Proceedings of the Biological Society of Washington 122 (1): 32 - 51, DOI: https://doi.org/10.2988/07-16.1" title="Gnathiid isopods (Crustacea: Isopoda: Gnathiidae), mostly new, from the Indian Ocean." url="https://doi.org/10.2988/07-16.1" volume="122" year="2009">Kensley et al. 2009</bibRefCitation>
).
</paragraph>
<paragraph id="9D2C4A1B995580379D74169959CC7250" pageId="0" pageNumber="125">
The gnathiid fauna of Western Australia, in contrast to the eastern Australian coast (see
<bibRefCitation id="CFA0D3AE5A8513518C6D8C0E387E5BF4" DOI="https://doi.org/10.24199/j.mmv.1994.54.13" author="Cohen, BF" journalOrPublisher="Memoirs of the Museum of Victoria" pageId="0" pageNumber="125" pagination="271 - 397" refId="B6" refString="Cohen, BF, Poore, GCB, 1994. Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from south-eastern Australia. Memoirs of the Museum of Victoria 54 (2): 271 - 397, DOI: https://doi.org/10.24199/j.mmv.1994.54.13" title="Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from south-eastern Australia." url="https://doi.org/10.24199/j.mmv.1994.54.13" volume="54" year="1994">Cohen and Poore 1994</bibRefCitation>
;
<bibRefCitation id="1DD8D98555B8451982BD876BFB0FAFEF" DOI="https://doi.org/10.1645/GE-1391.1" author="Coetzee, ML" journalOrPublisher="The Journal of Parasitology" pageId="0" pageNumber="125" pagination="608 - 615" refId="B4" refString="Coetzee, ML, Smit, NJ, Grutter, AS, Davies, AJ, 2008. A new gnathiid (Crustacea, Isopoda) parasitising two species of requiem sharks from Lizard Island, Great Barrier Reef, Australia. The Journal of Parasitology 94 (3): 608 - 615, DOI: https://doi.org/10.1645/GE-1391.1" title="A new gnathiid (Crustacea, Isopoda) parasitising two species of requiem sharks from Lizard Island, Great Barrier Reef, Australia." url="https://doi.org/10.1645/GE-1391.1" volume="94" year="2008">Coetzee et al. 2008</bibRefCitation>
,
<bibRefCitation id="349CD3E4D0C5A091DDD0A7E11D4D0882" DOI="https://doi.org/10.1007/s11230-008-9158-2" author="Coetzee, ML" journalOrPublisher="Systematic Parasitology" pageId="0" pageNumber="125" pagination="97 - 112" refId="B5" refString="Coetzee, ML, Smit, NJ, Grutter, AS, Davies, AJ, 2009. Gnathia trimaculata n. sp. (Crustacea: Isopoda: Gnathiidae), an ectoparasite found parasitising requiem sharks from Lizard Island, Great Barrier Reef, Australia. Systematic Parasitology 72 (2): 97 - 112, DOI: https://doi.org/10.1007/s11230-008-9158-2" title="Gnathia trimaculata n. sp. (Crustacea: Isopoda: Gnathiidae), an ectoparasite found parasitising requiem sharks from Lizard Island, Great Barrier Reef, Australia." url="https://doi.org/10.1007/s11230-008-9158-2" volume="72" year="2009">2009</bibRefCitation>
;
<bibRefCitation id="AA683069D5643404E69082ADAE34EC56" DOI="https://doi.org/10.1645/GE-1920.1" author="Ferreira, ML" journalOrPublisher="The Journal of Parasitology" pageId="0" pageNumber="125" pagination="1066 - 1075" refId="B10" refString="Ferreira, ML, Smit, NJ, Grutter, AS, Davies, AJ, 2009. A new species of gnathiid (Crustacea: Isopoda) parasitising teleosts from Lizard Island, Great Barrier Reef, Australia. The Journal of Parasitology 95 (5): 1066 - 1075, DOI: https://doi.org/10.1645/GE-1920.1" title="A new species of gnathiid (Crustacea: Isopoda) parasitising teleosts from Lizard Island, Great Barrier Reef, Australia." url="https://doi.org/10.1645/GE-1920.1" volume="95" year="2009">Ferreira et al. 2009</bibRefCitation>
,
<bibRefCitation id="B69D6ED5104C4A73A74C1E66A2EC9F4A" DOI="https://doi.org/10.11646/zootaxa.2718.1.3" author="Ferreira, ML" journalOrPublisher="Zootaxa" pageId="0" pageNumber="125" pagination="39 - 50" refId="B11" refString="Ferreira, ML, Smit, NJ, Davies, AJ, 2010. Gnathia grutterae sp. nov. (Crustacea, Isopoda, Gnathiidae) parasitising representatives of the Balistidae, Labridae and Tetraodontidae from Lizard Island, Great Barrier Reef, Australia. Zootaxa 2718 (1): 39 - 50, DOI: https://doi.org/10.11646/zootaxa.2718.1.3" title="Gnathia grutterae sp. nov. (Crustacea, Isopoda, Gnathiidae) parasitising representatives of the Balistidae, Labridae and Tetraodontidae from Lizard Island, Great Barrier Reef, Australia." url="https://doi.org/10.11646/zootaxa.2718.1.3" volume="2718" year="2010">2010</bibRefCitation>
;
<bibRefCitation id="AC4E4A47B0A968E7705FA49E8B4A04D5" author="Farquharson, C" journalOrPublisher="Zootaxa" pageId="0" pageNumber="125" pagination="22 - 36" refId="B9" refString="Farquharson, C, Smit, NJ, Grutter, AS, Davies, AJ, 2012. Gnathia masca sp. nov. (Crustacea, Isopoda, Gnathiidae) from Lizard Island, Great Barrier Reef, Australia. Zootaxa 3233: 22 - 36" title="Gnathia masca sp. nov. (Crustacea, Isopoda, Gnathiidae) from Lizard Island, Great Barrier Reef, Australia." volume="3233" year="2012">Farquharson et al. 2012</bibRefCitation>
;
<bibRefCitation id="F10BE36362B340539931BCF26C9D743D" DOI="https://doi.org/10.11646/zootaxa.3380.1.1" author="Svavarsson, J" journalOrPublisher="Zootaxa" pageId="0" pageNumber="125" pagination="1 - 33" refId="B26" refString="Svavarsson, J, Bruce, N, 2012. New and little-known gnathiid isopod crustaceans (Cymothoida) from the northern Great Barrier Reef and the Coral Sea. Zootaxa 3380 (1): 1 - 33, DOI: https://doi.org/10.11646/zootaxa.3380.1.1" title="New and little-known gnathiid isopod crustaceans (Cymothoida) from the northern Great Barrier Reef and the Coral Sea." url="https://doi.org/10.11646/zootaxa.3380.1.1" volume="3380" year="2012">Svavarsson and Bruce 2012</bibRefCitation>
,
<bibRefCitation id="046B2742565EFDD36B5F7FEC81F16C09" DOI="https://doi.org/10.11646/zootaxa.4609.1.2" author="Svavarsson, J" journalOrPublisher="Zootaxa" pageId="0" pageNumber="125" pagination="031 - 067" refId="B27" refString="Svavarsson, J, Bruce, N, 2019. New gnathiid isopod crustaceans (Cymothoida) from Heron Island and Wistari Reef, southern Great Barrier Reef. Zootaxa 4609 (1): 031 - 067, DOI: https://doi.org/10.11646/zootaxa.4609.1.2" title="New gnathiid isopod crustaceans (Cymothoida) from Heron Island and Wistari Reef, southern Great Barrier Reef." url="https://doi.org/10.11646/zootaxa.4609.1.2" volume="4609" year="2019">2019</bibRefCitation>
) remains almost undocumented.
<bibRefCitation id="51369E21A16F046E4E22937BA3368784" DOI="https://doi.org/10.24199/j.mmv.1994.54.13" author="Cohen, BF" journalOrPublisher="Memoirs of the Museum of Victoria" pageId="0" pageNumber="125" pagination="271 - 397" refId="B6" refString="Cohen, BF, Poore, GCB, 1994. Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from south-eastern Australia. Memoirs of the Museum of Victoria 54 (2): 271 - 397, DOI: https://doi.org/10.24199/j.mmv.1994.54.13" title="Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from south-eastern Australia." url="https://doi.org/10.24199/j.mmv.1994.54.13" volume="54" year="1994">Cohen and Poore (1994)</bibRefCitation>
mention that
<taxonomicName id="22DE4DD0F853D7A52713AEC8E3B3FA75" lsidName="G. mulieraria" pageId="0" pageNumber="125" rank="species" species="mulieraria">
<emphasis id="ED7A64283272A4AE383ECDCC1ED6F62F" italics="true" pageId="0" pageNumber="125">G. mulieraria</emphasis>
</taxonomicName>
Hale, 1924 occurred from Victoria and south Australia to Western Australia. However, the original description mentioned
<taxonomicName id="4B5F46E77A33E86073E9A0D19FB03330" lsidName="G. mulieraria" pageId="0" pageNumber="125" rank="species" species="mulieraria">
<emphasis id="13CD28C58446BD9CD44F3A980223AB62" italics="true" pageId="0" pageNumber="125">G. mulieraria</emphasis>
</taxonomicName>
only from South Australia and there is no evidence or reference to its distribution as referred to in
<bibRefCitation id="89F2607C3AB8078907BFE002E89B10AF" DOI="https://doi.org/10.24199/j.mmv.1994.54.13" author="Cohen, BF" journalOrPublisher="Memoirs of the Museum of Victoria" pageId="0" pageNumber="125" pagination="271 - 397" refId="B6" refString="Cohen, BF, Poore, GCB, 1994. Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from south-eastern Australia. Memoirs of the Museum of Victoria 54 (2): 271 - 397, DOI: https://doi.org/10.24199/j.mmv.1994.54.13" title="Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from south-eastern Australia." url="https://doi.org/10.24199/j.mmv.1994.54.13" volume="54" year="1994">Cohen and Poore (1994)</bibRefCitation>
. Therefore,
<taxonomicName id="34828B6E3D06B663800714353E8B85B7" lsidName="G. antennacrassa" pageId="0" pageNumber="125" rank="species" species="antennacrassa">
<emphasis id="6DD8BCD2AADC1CF606EDE7A7944D35A4" italics="true" pageId="0" pageNumber="125">G. antennacrassa</emphasis>
</taxonomicName>
represents the first recorded species of
<taxonomicName id="934856EF1ECEAD4CCEF8EA80C20430B0" authorityName="Leach" authorityYear="1814" class="Malacostraca" family="Gnathiidae" kingdom="Animalia" lsidName="" order="Isopoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="family">Gnathiidae</taxonomicName>
from Western Australia.
</paragraph>
</subSubSection>
</treatment>
</document>