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<document id="2C75D973D73F00F16B35AE2271C0C4BF" ID-DOI="10.3853/j.2201-4349.75.2023.1879" ID-ISSN="2201-4349" ID-Zenodo-Dep="10413874" IM.bibliography_approvedBy="guilherme" IM.illustrations_approvedBy="guilherme" IM.materialsCitations_approvedBy="guilherme" IM.metadata_approvedBy="felipe" IM.tables_approvedBy="guilherme" IM.taxonomicNames_approvedBy="guilherme" IM.treatments_approvedBy="guilherme" checkinTime="1703107916083" checkinUser="felipe" docAuthor="Berents, Penelope B." docDate="2023" docId="038F87828E47FFBCA5CDFDCA88E3F814" docLanguage="en" docName="RecAustMus.75.4.381-403.pdf" docOrigin="Records of the Australian Museum (Rec. Aust. Mus.) 75 (4)" docSource="http://dx.doi.org/10.3853/j.2201-4349.75.2023.1879" docStyle="DocumentStyle:997BA24B490466A2F99594A367FA147F.4:RecAustMus.2019-.journal_article.0cover" docStyleId="997BA24B490466A2F99594A367FA147F" docStyleName="RecAustMus.2019-.journal_article.0cover" docStyleVersion="4" docTitle="Cerapus chiltoni Berents 2023, sp. nov." docType="treatment" docUuid="395F0B53-201A-48D1-8309-147C5F42DDAB" docUuidSource="ZooBank" docVersion="2" lastPageNumber="389" masterDocId="FFB6FFFA8E42FFB4A650FFA88B08FFC7" masterDocTitle="New Species of Cerapus from Australian Waters (Amphipoda: Senticaudata: Ischyroceridae)" masterLastPageNumber="403" masterPageNumber="381" pageNumber="386" updateTime="1715777099919" updateUser="guilherme" zenodo-license-document="CC-BY-4.0">
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<mods:title id="A146475E2F5D7F2078136783B951406F">New Species of Cerapus from Australian Waters (Amphipoda: Senticaudata: Ischyroceridae)</mods:title>
</mods:titleInfo>
<mods:name id="3FC9063BA83AA3656F3FEF6128ECE073" type="personal">
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<mods:namePart id="2EFDA285F1E54E41A0D802E287EA35F9">Berents, Penelope B.</mods:namePart>
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<mods:title id="5A7EA7600F2C6DC8E9159355863453E2">Records of the Australian Museum</mods:title>
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<mods:date id="60C7C9041296AAD6D7E4CDB2549A33B7">2023</mods:date>
<mods:detail id="7A13D52DAA3004F362BC4E23F9698EB1" type="series">
<mods:title id="B81DD5939751D16F758DEC18E60763E6">Rec. Aust. Mus.</mods:title>
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<mods:number id="1C436BCB2E35A123B814B5FFFB925196">2023-12-06</mods:number>
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<mods:detail id="DCC0991189A50E14A7FAED24CF6F43F6" type="volume">
<mods:number id="3E762AA24000438E50C5AEB0FE5E3D46">75</mods:number>
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<mods:detail id="499C01E3284ECD671AC02F5BA913F28B" type="issue">
<mods:number id="C4C48EAB6A870833D290DA633C8B3B8F">4</mods:number>
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<mods:url id="C472528F8A823877DA89FF0DDBCE036D">http://dx.doi.org/10.3853/j.2201-4349.75.2023.1879</mods:url>
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<mods:classification id="774A64A7F4E80D8EAC11419D5978FD4E">journal article</mods:classification>
<mods:identifier id="694ED96464BD715FEEF1C1947C6D9A3A" type="DOI">10.3853/j.2201-4349.75.2023.1879</mods:identifier>
<mods:identifier id="EF660B30E19501DB8F0F7228D36E243B" type="ISSN">2201-4349</mods:identifier>
<mods:identifier id="2143E1FCCDEAC4EC0B2E6F967E29D361" type="Zenodo-Dep">10413874</mods:identifier>
<mods:identifier id="BE145D6344F202774A2A93F87241AE6F" type="ZooBank">A4C15464-4550-4BAD-B963-50AC2EE2A678</mods:identifier>
</mods:mods>
<treatment id="038F87828E47FFBCA5CDFDCA88E3F814" LSID="urn:lsid:zoobank.org:act:395F0B53-201A-48D1-8309-147C5F42DDAB" httpUri="http://treatment.plazi.org/id/038F87828E47FFBCA5CDFDCA88E3F814" lastPageId="8" lastPageNumber="389" pageId="5" pageNumber="386">
<subSubSection id="C33C651F8E47FFB1A5CDFDCA8E02FD46" box="[925,1290,609,641]" pageId="5" pageNumber="386" type="nomenclature">
<paragraph id="8B9936948E47FFB1A5CDFDCA8E02FD46" blockId="5.[925,1290,609,641]" box="[925,1290,609,641]" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A5CDFDCA8E02FD46" bold="true" box="[925,1290,609,641]" pageId="5" pageNumber="386">
<taxonomicName id="4C264D178E47FFB1A5CDFDCA8F87FD47" ID-CoL="BXQSD" authority="Berents, 2023" authorityName="Berents" authorityYear="2023" box="[925,1167,609,641]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="5" pageNumber="386" phylum="Arthropoda" rank="species" species="chiltoni" status="sp. nov.">
<emphasis id="B952EA868E47FFB1A5CDFDCA8F87FD47" bold="true" box="[925,1167,609,641]" italics="true" pageId="5" pageNumber="386">Cerapus chiltoni</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26157FD8E47FFB1A2C9FDCA8E02FD46" box="[1177,1290,610,641]" pageId="5" pageNumber="386" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</paragraph>
</subSubSection>
<subSubSection id="C33C651F8E47FFB1A57AFD3A8F8FFD1B" pageId="5" pageNumber="386" type="description">
<paragraph id="8B9936948E47FFB1A57AFD3A8E74FD63" blockId="5.[810,1404,658,676]" box="[810,1404,658,676]" pageId="5" pageNumber="386">urn:lsid:zoobank.org:act:395F0B53-201A-48D1-8309-147C5F42DDAB</paragraph>
<paragraph id="8B9936948E47FFB1A24FFD698F8FFD1B" blockId="5.[1055,1159,705,732]" box="[1055,1159,705,732]" pageId="5" pageNumber="386">Figs 48</paragraph>
</subSubSection>
<subSubSection id="C33C651F8E47FFB1A568FD588FE5FCC2" box="[824,1261,752,774]" pageId="5" pageNumber="386" type="reference_group">
<paragraph id="8B9936948E47FFB1A568FD588FE5FCC2" blockId="5.[824,1261,752,774]" box="[824,1261,752,774]" pageId="5" pageNumber="386">
<taxonomicName id="4C264D178E47FFB1A568FD5888D6FCC2" authorityName="Stebbing" authorityYear="1888" box="[824,990,752,773]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="5" pageNumber="386" phylum="Arthropoda" rank="species" species="flindersi">
<emphasis id="B952EA868E47FFB1A568FD5888D6FCC2" box="[824,990,752,773]" italics="true" pageId="5" pageNumber="386">Cerapus flindersi</emphasis>
</taxonomicName>
.—
<bibRefCitation id="EFB74B658E47FFB1A5ACFD588FBBFCC1" author="Chilton, C." box="[1020,1203,752,774]" pageId="5" pageNumber="386" pagination="1 - 6" refId="ref12367" refString="Chilton, C. 1892. On a tubicolous amphipod from Port Jackson. Records of the Australian Museum 2: 1 - 6, pl. 1. https: // doi. org / 10.3853 / j. 0067 - 1975.2.1892.1179" type="journal article" year="1892">
Chilton, 1892: 1
<emphasis id="B952EA868E47FFB1A2C9FD588FADFCC2" box="[1177,1189,752,773]" italics="true" pageId="5" pageNumber="386"></emphasis>
6
</bibRefCitation>
, pl. 1.
</paragraph>
</subSubSection>
<subSubSection id="C33C651F8E47FFB1A54AFCB38E86FB06" pageId="5" pageNumber="386" type="materials_examined">
<paragraph id="8B9936948E47FFB1A54AFCB38E86FBC6" blockId="5.[794,1422,795,1025]" pageId="5" pageNumber="386">
<materialsCitation id="3B4E3CC98E47FFB1A54AFCB38888FCAA" collectorName="R. Helms" country="Australia" latitude="-33.85" location="Port Jackson" longLatPrecision="1202" longitude="151.26666" pageId="5" pageNumber="386" specimenCount="1" specimenCount-male="1" stateProvince="New South Wales" typeStatus="holotype">
<emphasis id="B952EA868E47FFB1A54AFCB3888DFCF4" bold="true" box="[794,901,795,819]" pageId="5" pageNumber="386">
<typeStatus id="549D88368E47FFB1A54AFCB3888DFCF4" box="[794,901,795,819]" pageId="5" pageNumber="386">Holotype</typeStatus>
</emphasis>
:
<specimenCount id="9D20FD1D8E47FFB1A5C7FCB388DAFCF4" box="[919,978,795,819]" pageId="5" pageNumber="386" type="male">Male</specimenCount>
,
<quantity id="4CDE9B718E47FFB1A5B1FCB38F33FCF4" box="[993,1083,795,819]" metricMagnitude="-3" metricUnit="m" metricValue="4.1" pageId="5" pageNumber="386" unit="mm" value="4.1">4.1 mm</quantity>
, AM P.106341,
<location id="8EF9604F8E47FFB1A2A6FCB48E81FCF4" LSID="urn:lsid:plazi:treatment:038F87828E47FFBCA5CDFDCA88E3F814:8EF9604F8E47FFB1A2A6FCB48E81FCF4" box="[1270,1417,795,819]" country="Australia" latitude="-33.85" longLatPrecision="1202" longitude="151.26666" name="Port Jackson" pageId="5" pageNumber="386" stateProvince="New South Wales">Port Jackson</location>
,
<collectingRegion id="49E2F8768E47FFB1A54AFC9188D4FC96" box="[794,988,825,849]" country="Australia" name="New South Wales" pageId="5" pageNumber="386">New South Wales</collectingRegion>
,
<collectingCountry id="F33176048E47FFB1A5B6FC918F43FC96" box="[998,1099,825,849]" name="Australia" pageId="5" pageNumber="386">Australia</collectingCountry>
,
<geoCoordinate id="EE1250538E47FFB1A206FC918FA1FC97" box="[1110,1193,824,849]" degrees="33" direction="south" minutes="51" orientation="latitude" pageId="5" pageNumber="386" precision="925" value="-33.85">33°51'S</geoCoordinate>
<geoCoordinate id="EE1250538E47FFB1A2E1FC908E1DFC96" box="[1201,1301,824,849]" degrees="151" direction="east" minutes="16" orientation="longitude" pageId="5" pageNumber="386" precision="925" value="151.26666">151°16'E</geoCoordinate>
,
<collectorName id="26D353428E47FFB1A371FC918E81FC96" box="[1313,1417,825,849]" pageId="5" pageNumber="386">R. Helms</collectorName>
, pre-1892.
</materialsCitation>
<emphasis id="B952EA868E47FFB1A5D5FCFE88FEFCA9" bold="true" box="[901,1014,854,878]" pageId="5" pageNumber="386">Paratypes</emphasis>
: Female, 3.3 mm, AM P.106345; male, 4.1 mm, AM P.106343; male 2.8 mm, AM P.106344; male, 5.5 mm, AM P.106342; male, 3.3 mm, AM P.106345; data as for holotype. Male, 4.6 mm, AM P.27296, Fly Point, Port Stephens, New South Wales, Australia, 32°43'S 152°9'E, on orange hydroid, 20 m, N. Coleman, 27 November 1977.
</paragraph>
<paragraph id="8B9936948E47FFB1A54AFBBE8E86FB06" blockId="5.[793,1422,1046,1217]" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A54AFBBE8F6BFBE9" bold="true" box="[794,1123,1046,1070]" pageId="5" pageNumber="386">Additional material examined</emphasis>
. 5 specimens, AM P.106355, north-west end of South Solitary Island, New South Wales, Australia, 30°12'07&quot;S 153°15'59&quot;E, coral rubble, hand collected on scuba, 14.5 m, NSW 2813, K. B. Atwood, 1 May 2005;&gt;1000 specimens, AM P.106354, Port Jackson, New South Wales, Australia, 33°51'S 151°16'E, K. Sheard.
</paragraph>
</subSubSection>
<subSubSection id="C33C651F8E47FFB1A54AFB7E88D5FACC" pageId="5" pageNumber="386" type="distribution">
<paragraph id="8B9936948E47FFB1A54AFB7E88D5FACC" blockId="5.[794,1421,1238,1291]" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A54AFB7E88A5FB29" bold="true" box="[794,941,1238,1262]" pageId="5" pageNumber="386">Type locality</emphasis>
. Port Jackson, New South Wales, Australia, 33°51'S 151°16'E.
</paragraph>
</subSubSection>
<subSubSection id="C33C651F8E47FFB1A54AFA8988CAFA56" pageId="5" pageNumber="386" type="etymology">
<paragraph id="8B9936948E47FFB1A54AFA8988CAFA56" blockId="5.[794,1421,1313,1425]" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A54AFA89889DFAFE" bold="true" box="[794,917,1313,1337]" pageId="5" pageNumber="386">Etymology</emphasis>
. Named for Professor Charles Chilton who first examined Australian Museum specimens of this species from Port Jackson and attributed them to
<taxonomicName id="4C264D178E47FFB1A285FAF488B7FA56" authority="Stebbing, 1888" authorityName="Stebbing" authorityYear="1888" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="5" pageNumber="386" phylum="Arthropoda" rank="species" species="flindersi">
<emphasis id="B952EA868E47FFB1A285FAF48E85FAB4" box="[1237,1421,1371,1395]" italics="true" pageId="5" pageNumber="386">Cerapus flindersi</emphasis>
Stebbing, 1888
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="C33C651F8E47FFB3A54AFA0E8AFCF882" lastPageId="7" lastPageNumber="388" pageId="5" pageNumber="386" type="description">
<paragraph id="8B9936948E47FFB1A54AFA0E8885FA1C" blockId="5.[792,1422,1446,1998]" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A54AFA0E88AFFA79" bold="true" box="[794,935,1446,1470]" pageId="5" pageNumber="386">Description</emphasis>
.
<emphasis id="B952EA868E47FFB1A5EAFA0E88FEFA79" bold="true" box="[954,1014,1446,1470]" pageId="5" pageNumber="386">Male</emphasis>
(based on holotype, 4.1 mm, AM P.106341).
</paragraph>
<paragraph id="8B9936948E47FFB1A568FA498E86F8FC" blockId="5.[792,1422,1446,1998]" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A568FA49887CFA3E" bold="true" box="[824,884,1505,1529]" pageId="5" pageNumber="386">Head</emphasis>
.
<emphasis id="B952EA868E47FFB1A52EFA498FECFA3E" bold="true" box="[894,1252,1504,1529]" pageId="5" pageNumber="386">Rostrum short, length 0.1 × head</emphasis>
, evenly tapered, apically subacute; lateral cephalic lobe with ventral corner rounded, subocular margin deeply recessed, reaching beyond eye, anteroventral corner subquadrate, ventral margin horizontal, posterior margin vertical.
<emphasis id="B952EA868E47FFB1A2C8F9FE88E0F94C" bold="true" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A2C8F9FE8E0FF9A9" bold="true" box="[1176,1287,1622,1646]" italics="true" pageId="5" pageNumber="386">Antenna 1</emphasis>
long, length 0.6 × body length
</emphasis>
; peduncle without scales; peduncular article 1 shorter than article 3, length 0.8 × peduncular article 3, not produced anterodistally and anteromedially, slightly swollen along posterior margin, posterodistal corner not produced; peduncular article 2 anterodistal corner without distal projection; flagellum 7-articulate; article 1 long.
<emphasis id="B952EA868E47FFB1A54AF88B8F96F8FC" bold="true" box="[794,1182,1827,1851]" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A54AF88B8881F8FC" bold="true" box="[794,905,1827,1851]" italics="true" pageId="5" pageNumber="386">Antenna 2</emphasis>
length equal to antenna 1
</emphasis>
; flagellum 9-articulate.
</paragraph>
<paragraph id="8B9936948E47FFB1A568F8E98F97F854" blockId="5.[792,1422,1446,1998]" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A568F8E9888EF89E" bold="true" box="[824,902,1857,1881]" pageId="5" pageNumber="386">Pereon</emphasis>
.
<emphasis id="B952EA868E47FFB1A5C1F8E98F00F89E" box="[913,1032,1857,1881]" italics="true" pageId="5" pageNumber="386">Pereonite 1</emphasis>
with lateral keel, without sternal keel.
<emphasis id="B952EA868E47FFB1A549F8F7889EF8B1" box="[793,918,1886,1910]" italics="true" pageId="5" pageNumber="386">Pereonite 2</emphasis>
with sternal keel.
<emphasis id="B952EA868E47FFB1A235F8F78FEAF8B1" box="[1125,1250,1886,1910]" italics="true" pageId="5" pageNumber="386">Pereonite 3</emphasis>
without sternal keel.
<emphasis id="B952EA868E47FFB1A503F8D488C6F854" box="[851,974,1916,1939]" italics="true" pageId="5" pageNumber="386">Pereonite 5</emphasis>
length 1.9 × depth.
</paragraph>
<paragraph id="8B9936948E47FFB2A568F83189FCFDC8" blockId="5.[792,1422,1446,1998]" lastBlockId="6.[165,795,151,2000]" lastPageId="6" lastPageNumber="387" pageId="5" pageNumber="386">
<emphasis id="B952EA868E47FFB1A568F83188CCF876" box="[824,964,1945,1969]" italics="true" pageId="5" pageNumber="386">Gnathopod 1</emphasis>
coxa not fused to pereonite 1, length 1.5 × depth, without anteroventral lobe; basis length 2.2 × depth; carpus broad, length 1.6 × depth with setose posterior lobe; propodus palm extremely acute, robust setae absent.
<emphasis id="B952EA868E44FFB2A6F6FF7A8A3CFF2D" box="[166,308,210,234]" italics="true" pageId="6" pageNumber="387">Gnathopod 2</emphasis>
carpochelate; coxa not fused to pereonite 2, length 1.9 × depth,
<emphasis id="B952EA868E44FFB2A722FF478BDEFEE2" bold="true" pageId="6" pageNumber="387">with strongly produced anteroventral lobe</emphasis>
or cusp; basis short, broad, length twice breadth, without anteroproximal group of long slender setae; carpus very long, length 1.9 × breadth, slender, posterior margin without teeth,
<emphasis id="B952EA868E44FFB2A71AFECD894FFEBA" bold="true" box="[330,583,357,381]" pageId="6" pageNumber="387">palm deeply excavate</emphasis>
, anterodistal tooth extremely produced, located near articulation with propodus, posterodistal tooth well defined, long, length 2.2 × width; propodus slender, strongly curved, length 5.3 × width,
<emphasis id="B952EA868E44FFB2A6F7FE72893CFE35" bold="true" box="[167,564,474,498]" pageId="6" pageNumber="387">without tooth on posterior margin</emphasis>
, posterodistal corner smooth, without teeth; dactylus, length 0.5 × propodus.
</paragraph>
<paragraph id="8B9936948E44FFB2A695FDBD8A93FB52" blockId="6.[165,795,151,2000]" pageId="6" pageNumber="387">
<emphasis id="B952EA868E44FFB2A695FDBD8A4CFDEA" box="[197,324,533,557]" italics="true" pageId="6" pageNumber="387">Pereopod 3</emphasis>
coxa with narrow anteroventral lobe, not fused to pereonite 3, length 1.7 × depth; basis, length 1.6 × breadth, with proximal rounded anterodorsal corner, with simple setae along anterior margin, without denticles along anterior margin; ischium long, length 1.6 × breadth; merus length 1.2 × breadth; short; without ridges.
<emphasis id="B952EA868E44FFB2A4C9FD0F8812FD07" box="[665,794,679,704]" italics="true" pageId="6" pageNumber="387">Pereopod 4</emphasis>
coxa not fused to pereonite 4, with anterior lobe separated from an anteroventral lobe; basis length 1.5 × breadth, with simple setal group midway along anterior margin; ischium long, length 2.3 × breadth; merus long, length 1.3 × breadth.
<emphasis id="B952EA868E44FFB2A6F6FC928A15FC95" box="[166,285,826,850]" italics="true" pageId="6" pageNumber="387">Pereopod 5</emphasis>
coxa length 1.8 × depth, without patches of small setae, with setae along ventral margin few or absent; merus with anterior lobe not extending beyond anterior margin of carpus, posterior lobe with 1 plumose seta; propodus with 1 seta along posterior margin; dactylus short, uncinate with 1 accessory hook.
<emphasis id="B952EA868E44FFB2A7F3FC648A07FBC5" bold="true" pageId="6" pageNumber="387">
<emphasis id="B952EA868E44FFB2A7F3FC648917FC22" bold="true" box="[419,543,972,997]" italics="true" pageId="6" pageNumber="387">Pereopod 6</emphasis>
coxa with setal fringe ventrally
</emphasis>
, without patches of small setae near margins; basis without patch of small setae near anterior margin; merus, length 1.9 × breadth; dactylus short, uncinate, with 1 accessory hook.
<emphasis id="B952EA868E44FFB2A721FBEA8AE5FB9D" box="[369,493,1090,1114]" italics="true" pageId="6" pageNumber="387">Pereopod 7</emphasis>
coxa without posterodorsal lobe; merus length 2.3 × breadth; dactylus short, uncinate, with 1 accessory hook.
</paragraph>
<paragraph id="8B9936948E44FFB2A695FB358939F94D" blockId="6.[165,795,151,2000]" pageId="6" pageNumber="387">
<emphasis id="B952EA868E44FFB2A695FB358A00FB72" bold="true" box="[197,264,1181,1205]" pageId="6" pageNumber="387">Pleon</emphasis>
.
<emphasis id="B952EA868E44FFB2A74BFB358AB1FB72" box="[283,441,1181,1205]" italics="true" pageId="6" pageNumber="387">Pleopods 13</emphasis>
biramous, decreasing in size.
<emphasis id="B952EA868E44FFB2A6F7FB128A1AFB15" box="[167,274,1210,1234]" italics="true" pageId="6" pageNumber="387">Pleopod 1</emphasis>
inner ramus 7-articulate; outer ramus 3-articulate article 1 evenly swollen.
<emphasis id="B952EA868E44FFB2A7ECFB7F8923FB37" box="[444,555,1239,1264]" italics="true" pageId="6" pageNumber="387">Pleopod 2</emphasis>
inner ramus reduced, 1-articulate; outer ramus, broad, 1-articulate.
<emphasis id="B952EA868E44FFB2A426FB5D89D7FACA" box="[630,735,1269,1293]" italics="true" pageId="6" pageNumber="387">Pleopod 3</emphasis>
inner ramus reduced, 1-articulate; outer ramus broad, 1-articulate.
<emphasis id="B952EA868E44FFB2A6F6FA878A07FA8F" box="[166,271,1327,1352]" italics="true" pageId="6" pageNumber="387">Uropod 1</emphasis>
biramous; peduncle, length 1.3 × outer ramus; rami with distoventral fan of robust setae; outer ramus with lateral row of denticles, without medial setae, with 3 lateral setae, with large apical robust seta, without smaller slender setae; inner ramus, length 0.6 × outer ramus, without medial and 1 lateral seta, with large apical robust seta.
<emphasis id="B952EA868E44FFB2A4E2FA6A8811FA1D" box="[690,793,1474,1498]" italics="true" pageId="6" pageNumber="387">Uropod 2</emphasis>
uniramous, peduncle, length 2.1× breadth, 5 × length of ramus; ramus small with 2 denticles and 1 slender apical seta.
<emphasis id="B952EA868E44FFB2A68FF9B28A4EF9F5" box="[223,326,1562,1586]" italics="true" pageId="6" pageNumber="387">Uropod 3</emphasis>
uniramous, peduncle length 1.7 × breadth; ramus with 2 curved hooks.
<taxonomicName id="4C264D178E44FFB2A783F99F8910F988" authorityName="Pearse" authorityYear="1952" box="[467,536,1591,1615]" class="Copepoda" family="Telsidae" genus="Telson" kingdom="Animalia" order="Cyclopoida" pageId="6" pageNumber="387" phylum="Arthropoda" rank="genus">
<emphasis id="B952EA868E44FFB2A783F99F8910F988" box="[467,536,1591,1615]" italics="true" pageId="6" pageNumber="387">Telson</emphasis>
</taxonomicName>
as broad as long, length 1.0 × breadth, cleft to base,
<emphasis id="B952EA868E44FFB2A79FF9FD8921F94D" bold="true" pageId="6" pageNumber="387">each lobe with 78 anteriorly directed recurved spines in 2 rows</emphasis>
.
</paragraph>
<paragraph id="8B9936948E44FFB2A695F93A8974F808" blockId="6.[165,795,151,2000]" pageId="6" pageNumber="387">
<emphasis id="B952EA868E44FFB2A695F93A8A14F96D" bold="true" box="[197,284,1682,1706]" pageId="6" pageNumber="387">Female</emphasis>
(sexually dimorphic characters). Based on paratype female, 3.3 mm, AM P.106345.
<emphasis id="B952EA868E44FFB2A41CF91889BEF90F" box="[588,694,1712,1736]" italics="true" pageId="6" pageNumber="387">Antenna 1</emphasis>
peduncle without scales; flagellum 7-articulate.
<emphasis id="B952EA868E44FFB2A410F96589A5F922" box="[576,685,1741,1765]" italics="true" pageId="6" pageNumber="387">Antenna 2</emphasis>
flagellum 9-articulate.
<emphasis id="B952EA868E44FFB2A763F9438ABBF8C5" box="[307,435,1770,1794]" italics="true" pageId="6" pageNumber="387">Pereonite 1</emphasis>
without lateral keel.
<emphasis id="B952EA868E44FFB2A4F7F9438BC6F8E7" italics="true" pageId="6" pageNumber="387">Pereonites 23</emphasis>
without sternal keel.
<emphasis id="B952EA868E44FFB2A791F8A08936F8D8" box="[449,574,1800,1823]" italics="true" pageId="6" pageNumber="387">Pereonite 5</emphasis>
length 1.9 × depth.
<emphasis id="B952EA868E44FFB2A6F6F88D8A33F8FA" box="[166,315,1829,1853]" italics="true" pageId="6" pageNumber="387">Gnathopod 1,</emphasis>
coxa length 1.2 × depth; basis length 1.5 × depth; carpus, length equal to depth with setose posterior lobe.
<emphasis id="B952EA868E44FFB2A6B6F8F78A7FF8BF" box="[230,375,1887,1912]" italics="true" pageId="6" pageNumber="387">Gnathopod 2</emphasis>
subchelate; coxa length 2.7 × depth; basis length 1.7 × depth without medial line of setae; palm extremely acute.
<emphasis id="B952EA868E44FFB2A73CF8328AE5F875" box="[364,493,1946,1970]" italics="true" pageId="6" pageNumber="387">Pereopod 5</emphasis>
coxa, length 1.9 × depth.
<emphasis id="B952EA868E44FFB2A6F7F8108A10F808" box="[167,280,1976,1999]" italics="true" pageId="6" pageNumber="387">Oostegites</emphasis>
from gnathopod 2 to pereopod 5.
</paragraph>
<caption id="DF59661C8E44FFB2A517F8098FEAF815" ID-DOI="http://doi.org/10.5281/zenodo.10413884" ID-Zenodo-Dep="10413884" httpUri="https://zenodo.org/record/10413884/files/figure.png" pageId="6" pageNumber="387" startId="6.[839,907,1953,1975]" targetBox="[895,1324,109,1946]" targetPageId="6" targetType="figure">
<paragraph id="8B9936948E44FFB2A517F8098FEAF815" blockId="6.[839,1467,1953,2002]" pageId="6" pageNumber="387">
<emphasis id="B952EA868E44FFB2A517F8098894F871" bold="true" box="[839,924,1953,1975]" pageId="6" pageNumber="387">Figure 4</emphasis>
.
<taxonomicName id="4C264D178E44FFB2A5F8F80A8F40F871" authority="Berents, 2023" authorityName="Berents" authorityYear="2023" box="[936,1096,1953,1975]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="387" phylum="Arthropoda" rank="species" species="chiltoni" status="sp. nov.">
<emphasis id="B952EA868E44FFB2A5F8F80A8F40F871" box="[936,1096,1953,1975]" italics="true" pageId="6" pageNumber="387">Cerapus chiltoni</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26157FD8E44FFB2A21DF80A8F92F870" box="[1101,1178,1954,1975]" pageId="6" pageNumber="387" rank="species">sp. nov.</taxonomicNameLabel>
, male, 4.2 mm, AM P.106351, Port Jackson, New South Wales, Australia.
</paragraph>
</caption>
<caption id="DF59661C8E45FFB3A54AFB108E5DFB2E" ID-DOI="http://doi.org/10.5281/zenodo.10413886" ID-Zenodo-Dep="10413886" httpUri="https://zenodo.org/record/10413886/files/figure.png" pageId="7" pageNumber="388" startId="7.[794,863,1208,1230]" targetBox="[961,1263,149,1188]" targetPageId="7" targetType="figure">
<paragraph id="8B9936948E45FFB3A54AFB108E5DFB2E" blockId="7.[794,1420,1208,1257]" pageId="7" pageNumber="388">
<emphasis id="B952EA868E45FFB3A54AFB10887CFB0A" bold="true" box="[794,884,1208,1230]" pageId="7" pageNumber="388">Figure 6</emphasis>
.
<taxonomicName id="4C264D178E45FFB3A5D4FB118F23FB0A" authority="Berents, 2023" authorityName="Berents" authorityYear="2023" box="[900,1067,1208,1230]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="388" phylum="Arthropoda" rank="species" species="chiltoni" status="sp. nov.">
<emphasis id="B952EA868E45FFB3A5D4FB118F23FB0A" box="[900,1067,1208,1230]" italics="true" pageId="7" pageNumber="388">Cerapus chiltoni</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26157FD8E45FFB3A264FB118F8DFB09" box="[1076,1157,1209,1230]" pageId="7" pageNumber="388" rank="species">sp. nov.</taxonomicNameLabel>
, tube, AM P.106351, Port Jackson, New South Wales, Australia, length of tube 6 mm.
</paragraph>
</caption>
<caption id="DF59661C8E45FFB3A629F9918A15F942" ID-DOI="http://doi.org/10.5281/zenodo.10413888" ID-Zenodo-Dep="10413888" httpUri="https://zenodo.org/record/10413888/files/figure.png" pageId="7" pageNumber="388" startId="7.[121,189,1593,1615]" targetBox="[237,636,143,1578]" targetPageId="7" targetType="figure">
<paragraph id="8B9936948E45FFB3A629F9918A15F942" blockId="7.[121,748,1593,1669]" pageId="7" pageNumber="388">
<emphasis id="B952EA868E45FFB3A629F9918BC6F988" bold="true" box="[121,206,1593,1615]" pageId="7" pageNumber="388">Figure 5</emphasis>
.
<taxonomicName id="4C264D178E45FFB3A68AF9928A72F989" authority="Berents, 2023" authorityName="Berents" authorityYear="2023" box="[218,378,1593,1615]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="388" phylum="Arthropoda" rank="species" species="chiltoni" status="sp. nov.">
<emphasis id="B952EA868E45FFB3A68AF9928A72F989" box="[218,378,1593,1615]" italics="true" pageId="7" pageNumber="388">Cerapus chiltoni</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26157FD8E45FFB3A7D0F9928AC4F988" box="[384,460,1594,1615]" pageId="7" pageNumber="388" rank="species">sp. nov.</taxonomicNameLabel>
, male, 4.2 mm, dorsal view of head and pereonites 1
<emphasis id="B952EA868E45FFB3A719F9FD8A5DF9AD" box="[329,341,1621,1642]" italics="true" pageId="7" pageNumber="388"></emphasis>
3, AM P.106351, Port Jackson, New South Wales, Australia.
</paragraph>
</caption>
<paragraph id="8B9936948E45FFB3A629F94A8BDCF8DF" blockId="7.[121,748,1762,1816]" pageId="7" pageNumber="388">
<emphasis id="B952EA868E45FFB3A629F94A8BBAF93D" bold="true" box="[121,178,1762,1786]" pageId="7" pageNumber="388">Tube</emphasis>
. Composed of fine-grained grey sediment, flared at one end.
</paragraph>
<paragraph id="8B9936948E45FFB3A629F8858AFCF882" blockId="7.[121,500,1837,1861]" box="[121,500,1837,1861]" pageId="7" pageNumber="388">
<emphasis id="B952EA868E45FFB3A629F8858BD8F882" bold="true" box="[121,208,1837,1861]" pageId="7" pageNumber="388">Habitat</emphasis>
. Marine, 14.5
<emphasis id="B952EA868E45FFB3A737F8868A7CF882" box="[359,372,1838,1861]" italics="true" pageId="7" pageNumber="388"></emphasis>
20 m depth.
</paragraph>
</subSubSection>
<subSubSection id="C33C651F8E45FFBCA629F8F28E7AF8BC" lastPageId="8" lastPageNumber="389" pageId="7" pageNumber="388" type="discussion">
<paragraph id="8B9936948E45FFB3A629F8F288E7F906" blockId="7.[121,749,1882,1994]" lastBlockId="7.[793,1422,1353,1994]" pageId="7" pageNumber="388">
<emphasis id="B952EA868E45FFB3A629F8F28BEBF8B5" bold="true" box="[121,227,1882,1906]" pageId="7" pageNumber="388">Remarks</emphasis>
. The Port Jackson material of
<taxonomicName id="4C264D178E45FFB3A41BF8F389CAF8B5" authority="Berents, 2023" authorityName="Berents" authorityYear="2023" box="[587,706,1882,1906]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="388" phylum="Arthropoda" rank="species" species="chiltoni" status="sp. nov.">
<emphasis id="B952EA868E45FFB3A41BF8F389CAF8B5" box="[587,706,1882,1906]" italics="true" pageId="7" pageNumber="388">C. chiltoni</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26157FD8E45FFB3A49DF8F38BAFF848" pageId="7" pageNumber="388" rank="species">sp. nov.</taxonomicNameLabel>
was collected by Richard Helms and deposited in the collections of the Australian Museum. Helms was a collector for the Australian Museum from 1888 but the precise locality and date of these collections is unknown. Specimens collected by Helms were sent to Professor Charles Chilton who published a description of amphipod specimens that were collected in Port Jackson (
<bibRefCitation id="EFB74B658E45FFB3A2D6FA098E2EFA7D" author="Chilton, C." box="[1158,1318,1441,1466]" pageId="7" pageNumber="388" pagination="1 - 6" refId="ref12367" refString="Chilton, C. 1892. On a tubicolous amphipod from Port Jackson. Records of the Australian Museum 2: 1 - 6, pl. 1. https: // doi. org / 10.3853 / j. 0067 - 1975.2.1892.1179" type="journal article" year="1892">Chilton, 1892</bibRefCitation>
). Chilton illustrated and described the specimens, attributing the material to
<taxonomicName id="4C264D178E45FFB3A5C2FA748FFDFA33" authority="Stebbing, 1888" authorityName="Stebbing" authorityYear="1888" box="[914,1269,1500,1524]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="388" phylum="Arthropoda" rank="species" species="flindersi">
<emphasis id="B952EA868E45FFB3A5C2FA748F42FA33" box="[914,1098,1500,1524]" italics="true" pageId="7" pageNumber="388">Cerapus flindersi</emphasis>
Stebbing, 1888
</taxonomicName>
. Specimens in ethanol and seven microscope slides prepared by Chilton are held in the Australian Museum collections (4 slides of parts of large male, 1 slide of parts of smaller male, 2 slides of whole females) and are considered to be the slides used for the description and illustrations by
<bibRefCitation id="EFB74B658E45FFB3A2B9F9C78E82F940" author="Chilton, C." box="[1257,1418,1647,1671]" pageId="7" pageNumber="388" pagination="1 - 6" refId="ref12367" refString="Chilton, C. 1892. On a tubicolous amphipod from Port Jackson. Records of the Australian Museum 2: 1 - 6, pl. 1. https: // doi. org / 10.3853 / j. 0067 - 1975.2.1892.1179" type="journal article" year="1892">Chilton (1892)</bibRefCitation>
. Labels on the slides confirm that the Chiltons material was collected by Helms.
</paragraph>
<paragraph id="8B9936948E45FFB3A568F96F8FF2F893" blockId="7.[793,1422,1353,1994]" pageId="7" pageNumber="388">
Berents &amp; Lowry (2018) assigned
<taxonomicName id="4C264D178E45FFB3A29AF96F88B3F93B" authority="Stebbing, 1888" authorityName="Stebbing" authorityYear="1888" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="388" phylum="Arthropoda" rank="species" species="flindersi">
<emphasis id="B952EA868E45FFB3A29AF96F8E86F918" box="[1226,1422,1735,1759]" italics="true" pageId="7" pageNumber="388">Cerapus flindersi</emphasis>
Stebbing, 1888
</taxonomicName>
to the new genus
<taxonomicName id="4C264D178E45FFB3A22DF94C8FEEF93B" authorityName="Berents &amp; Lowry" authorityYear="2018" box="[1149,1254,1764,1788]" class="Malacostraca" family="Ischyroceridae" genus="Kapalana" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="388" phylum="Arthropoda" rank="genus">
<emphasis id="B952EA868E45FFB3A22DF94C8FEEF93B" box="[1149,1254,1764,1788]" italics="true" pageId="7" pageNumber="388">Kapalana</emphasis>
</taxonomicName>
and considered Chiltons specimens to be an undescribed species of
<taxonomicName id="4C264D178E45FFB3A37EF8AA8E8FF8DE" box="[1326,1415,1794,1817]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="388" phylum="Arthropoda" rank="genus">
<emphasis id="B952EA868E45FFB3A37EF8AA8E8FF8DE" box="[1326,1415,1794,1817]" italics="true" pageId="7" pageNumber="388">Cerapus</emphasis>
</taxonomicName>
. The material examined by Chilton is attributed to the new species described herein as
<emphasis id="B952EA868E45FFB3A210F8948FF2F893" box="[1088,1274,1852,1876]" italics="true" pageId="7" pageNumber="388">
<taxonomicName id="4C264D178E45FFB3A210F8948FFEF893" authorityName="Berents" authorityYear="2023" box="[1088,1270,1852,1876]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="388" phylum="Arthropoda" rank="species" species="chiltoni">Cerapus chiltoni</taxonomicName>
.
</emphasis>
</paragraph>
<paragraph id="8B9936948E45FFBCA568F8F18E7AF8BC" blockId="7.[793,1422,1353,1994]" lastBlockId="8.[839,1394,1891,1915]" lastPageId="8" lastPageNumber="389" pageId="7" pageNumber="388">
The shape of the male gnathopod 2 changes with body size. The carpus and the propodus become more elongate as the male grows. The length to breadth ratio of the carpus changes from 1.3:1 in small males (up to 3.3 mm) to 1.9:1 in large males (greater than 4.0 mm).The palm changes from shallowly excavate in males less than 3.0 mm to deeply excavate in males larger than 4.0 mm. The posterodistal tooth becomes more elongate and chisel-like in large males (&gt; 4.0 mm). The chisel-like posterodistal tooth is unique to
<emphasis id="B952EA868E4AFFBCA2AEF8CB8E7AF8BC" box="[1278,1394,1891,1915]" italics="true" pageId="8" pageNumber="389">
<taxonomicName id="4C264D178E4AFFBCA2AEF8CB8E66F8BC" authorityName="Berents" authorityYear="2023" box="[1278,1390,1891,1915]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="389" phylum="Arthropoda" rank="species" species="chiltoni">C. chiltoni</taxonomicName>
.
</emphasis>
</paragraph>
</subSubSection>
<caption id="DF59661C8E4AFFBCA6F6F9528FA6F882" ID-DOI="http://doi.org/10.5281/zenodo.10413890" ID-Zenodo-Dep="10413890" httpUri="https://zenodo.org/record/10413890/files/figure.png" pageId="8" pageNumber="389" startId="8.[166,234,1786,1808]" targetBox="[180,1466,145,1774]" targetPageId="8" targetType="figure">
<paragraph id="8B9936948E4AFFBCA6F6F9528FA6F882" blockId="8.[166,1467,1786,1862]" pageId="8" pageNumber="389">
<emphasis id="B952EA868E4AFFBCA6F6F9528BF4F8D7" bold="true" box="[166,252,1786,1808]" pageId="8" pageNumber="389">Figure 7</emphasis>
.
<taxonomicName id="4C264D178E4AFFBCA758F9538AA1F8C8" authority="Berents, 2023" authorityName="Berents" authorityYear="2023" box="[264,425,1786,1808]" class="Malacostraca" family="Ischyroceridae" genus="Cerapus" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="389" phylum="Arthropoda" rank="species" species="chiltoni" status="sp. nov.">
<emphasis id="B952EA868E4AFFBCA758F9538AA1F8C8" box="[264,425,1786,1808]" italics="true" pageId="8" pageNumber="389">Cerapus chiltoni</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A26157FD8E4AFFBCA7FFF9538AF5F8D7" box="[431,509,1787,1808]" pageId="8" pageNumber="389" rank="species">sp. nov.</taxonomicNameLabel>
: holotype, male, 4.2 mm, AM P.106341; paratype, male “a”, 2.8 mm, AM P.106344; paratype, male “b”, 3.3 mm, AM P.106346; paratype, male “c”, 4.1 mm, AM P.106343; paratype, female, 3.3 mm, AM P.106345; Port Jackson, New South Wales, Australia. Pleopods 1
<emphasis id="B952EA868E4AFFBCA7A7F898890BF882" box="[503,515,1840,1861]" italics="true" pageId="8" pageNumber="389"></emphasis>
3 insertion points of setae are indicated by small circles. Scale 0.1 mm.
</paragraph>
</caption>
<subSubSection id="C33C651F8E4AFFBCA517F83588E3F814" pageId="8" pageNumber="389" type="distribution">
<paragraph id="8B9936948E4AFFBCA517F83588E3F814" blockId="8.[839,1466,1949,2003]" pageId="8" pageNumber="389">
<emphasis id="B952EA868E4AFFBCA517F83588DEF872" bold="true" box="[839,982,1949,1973]" pageId="8" pageNumber="389">Distribution</emphasis>
. New South Wales: Port Jackson to South Solitary Island.
</paragraph>
</subSubSection>
</treatment>
</document>