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<document id="A2C4075AD3047B4DF78E06CEBCD9B58B" ID-ISSN="2201-4349" IM.materialsCitations_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1629576211927" checkinUser="felipe" docAuthor="Harris, V. A." docDate="2002" docId="03D3F67DD505FFA2FEACFF2272F1F820" docLanguage="en" docName="RecAustMus.54.1.1-24.pdf" docOrigin="Records of the Australian Museum 54" docStyle="DocumentStyle:7863F7301B7BEE922F541F6F9B5AEEC6.2:RecAustMus.2008-2018.journal_article.0cover" docStyleId="7863F7301B7BEE922F541F6F9B5AEEC6" docStyleName="RecAustMus.2008-2018.journal_article.0cover" docStyleVersion="2" docTitle="Dilatatiocauda retroseta Harris 2002, n.sp." docType="treatment" docVersion="2" lastPageNumber="16" masterDocId="FFEA8E05D508FFADFFAAFFBA7627FFF0" masterDocTitle="A New Genus Belonging to the Family Porcellidiidae (Crustacea: Copepoda: Harpacticoida) With Three New Species from Australia" masterLastPageNumber="24" masterPageNumber="1" pageNumber="14" updateTime="1699078926939" updateUser="plazi" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0">
<mods:mods id="F01C63937FD9FAF57F459CDD981CA7EC" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="1C1AABF7EFD8D27EF90872CCAAC9927D">
<mods:title id="D634C0FD2E58F5933EE7C40E24B38281">A New Genus Belonging to the Family Porcellidiidae (Crustacea: Copepoda: Harpacticoida) With Three New Species from Australia</mods:title>
</mods:titleInfo>
<mods:name id="2E18C761DDAAF38D958D5E183D26389C" type="personal">
<mods:role id="94B119B30D72D5F583F11E9E90F49181">
<mods:roleTerm id="7DC072302C6AD5AE1B2E1DF7E554C326">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="7DFFF91CB9B221AE012573F2DB4E08C7">Harris, V. A.</mods:namePart>
</mods:name>
<mods:typeOfResource id="791D6A3102F482B87BD92FE41CABAC13">text</mods:typeOfResource>
<mods:relatedItem id="D22491CDCE06FF9CCEAFCEA9F09EF651" type="host">
<mods:titleInfo id="9807F8FF45E4C5C975F133DAF3AE784E">
<mods:title id="5774B594E40F82523055ED82E3894463">Records of the Australian Museum</mods:title>
</mods:titleInfo>
<mods:part id="921AF9C358BD07AD515654070CCB29F6">
<mods:date id="DB082D2AA55D94BC8A9EEA1CEDE7BE25">2002</mods:date>
<mods:detail id="3EDE0F1BB664520635E63AE10FB201A1" type="volume">
<mods:number id="EDDDA08CCA69A20D2BEA569CE949BFCA">54</mods:number>
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</mods:extent>
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<mods:classification id="D886A56F0F44F1F3F88C5CB1F482FA36">journal article</mods:classification>
<mods:identifier id="74BB28069F1DF4C99E556AE129709E8C" type="ISSN">2201-4349</mods:identifier>
</mods:mods>
<treatment id="03D3F67DD505FFA2FEACFF2272F1F820" LSID="urn:lsid:plazi:treatment:03D3F67DD505FFA2FEACFF2272F1F820" httpUri="http://treatment.plazi.org/id/03D3F67DD505FFA2FEACFF2272F1F820" lastPageId="15" lastPageNumber="16" pageId="13" pageNumber="14">
<subSubSection id="C36014E0D505FFA0FEACFF227478FF40" box="[262,607,152,176]" pageId="13" pageNumber="14" type="nomenclature">
<paragraph id="8BC5476BD505FFA0FEACFF227478FF40" blockId="13.[262,607,152,176]" box="[262,607,152,176]" pageId="13" pageNumber="14">
<heading id="D08DF007D505FFA0FEACFF227478FF40" box="[262,607,152,176]" centered="true" fontSize="11" level="2" pageId="13" pageNumber="14" reason="2">
<emphasis id="B90E9B79D505FFA0FEACFF227478FF40" bold="true" box="[262,607,152,176]" pageId="13" pageNumber="14">
<taxonomicName id="4C7A3CE8D505FFA0FEACFF227407FF40" authority="Harris, 2002" authorityName="Harris" authorityYear="2002" box="[262,544,152,176]" class="Hexanauplia" family="Porcellidiidae" genus="Dilatatiocauda" kingdom="Animalia" order="Harpacticoida" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="retroseta" status="sp. nov.">
<emphasis id="B90E9B79D505FFA0FEACFF227407FF40" bold="true" box="[262,544,152,176]" italics="true" pageId="13" pageNumber="14">Dilatatiocauda retroseta</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A23D2602D505FFA0FD8DFF227478FF40" box="[551,607,152,176]" pageId="13" pageNumber="14" rank="species">n.sp.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C36014E0D505FFA0FEF0FF77742CFF14" box="[346,523,205,228]" pageId="13" pageNumber="14" type="description">
<paragraph id="8BC5476BD505FFA0FEF0FF77742CFF14" blockId="13.[346,523,205,228]" box="[346,523,205,228]" pageId="13" pageNumber="14">
<figureCitation id="13415BEED505FFA0FEF0FF77778EFF14" box="[346,425,205,228]" captionStart="Figure 3" captionStartId="6.[265,332,1687,1708]" captionTargetBox="[246,1353,174,1665]" captionTargetId="figure-10@6.[234,1383,151,1665]" captionTargetPageId="6" captionText="Figure 3. Comparison of first peraeopods (ventral view, denticulate area stippled).A, Dilatatiocauda multidenticulata n.sp., P1 right limb. B, D. dilatata (Hicks, 1971), P1 right limb. C, D. medialis n.sp., P1 left limb. D, D. retroseta n.sp., P1 right limb. E, D. bipartita (Kim &amp; Kim, 1997), P1 left limb. Scale bar: A = 0.1 mm; B = 0.08 mm; C,D, 0.133 mm; E = 0.17 mm." pageId="13" pageNumber="14">Figs. 3</figureCitation>
,
<figureCitation id="13415BEED505FFA0FE1CFF7777E1FF14" box="[438,454,205,228]" captionStart="Figure 6" captionStartId="11.[219,288,1702,1723]" captionTargetBox="[220,1308,151,1686]" captionTargetId="figure-158@11.[200,1348,151,1686]" captionTargetPageId="11" captionText="Figure 6. Comparison of caudal rami (left dorsal focus, right ventral focus). A, Dilatatiocauda multidenticulata n.sp. B, D. medialis n.sp., showing dorsal reticulate pattern. C, D. tristanensis (Wiborg, 1964), right caudal ramus, after Hicks (1982). D, D. retroseta n.sp. E, D. bipartita (Kim &amp; Kim, 1997), (left ramus slightly foreshortened). F, D. plana (Tiemann, 1977), left caudal ramus, after Tiemann (1977). Scale bar:A,B,D,F = 0.1 mm; C,E. = 0.133 mm." pageId="13" pageNumber="14">6</figureCitation>
,
<figureCitation id="13415BEED505FFA0FE79FF7777C4FF14" box="[467,483,205,228]" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">9</figureCitation>
,
<figureCitation id="13415BEED505FFA0FE5AFF77742CFF14" box="[496,523,205,228]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">10</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="C36014E0D505FFA0FFD3FEB974CAFD00" pageId="13" pageNumber="14" type="materials_examined">
<paragraph id="8BC5476BD505FFA0FFD3FEB976DCFDF5" blockId="13.[121,749,259,753]" pageId="13" pageNumber="14">
<emphasis id="B90E9B79D505FFA0FFD3FEB9773FFEEB" bold="true" box="[121,280,259,283]" pageId="13" pageNumber="14">Type material</emphasis>
.
<typeStatus id="54C1F9C9D505FFA0FE8FFEBE77BDFEEA" box="[293,410,260,283]" pageId="13" pageNumber="14" type="holotype">HOLOTYPE</typeStatus>
adult female without egg mass, length
<quantity id="4C82EA8ED505FFA0FF6BFE9B7705FEC8" box="[193,290,289,312]" metricMagnitude="-4" metricUnit="m" metricValue="9.399999999999999" pageId="13" pageNumber="14" unit="mm" value="0.94">0.94 mm</quantity>
.
<collectionCode id="ED6BDFAED505FFA0FE83FE9B7773FEC8" box="[297,340,289,312]" country="Australia" name="Australian Museum" pageId="13" pageNumber="14" type="Museum">AM</collectionCode>
P58796.
<typeStatus id="54C1F9C9D505FFA0FE1DFE9B740EFEC8" box="[439,553,289,312]" pageId="13" pageNumber="14" type="allotype">ALLOTYPE</typeStatus>
adult male, length
<quantity id="4C82EA8ED505FFA0FFD3FE8476E9FEA5" box="[121,206,318,341]" metricMagnitude="-4" metricUnit="m" metricValue="7.0" pageId="13" pageNumber="14" unit="mm" value="0.7">0.7 mm</quantity>
.
<collectionCode id="ED6BDFAED505FFA0FF7FFE847727FEA5" box="[213,256,318,341]" country="Australia" name="Australian Museum" pageId="13" pageNumber="14" type="Museum">AM</collectionCode>
P58797.
<typeStatus id="54C1F9C9D505FFA0FECFFE8477C6FEA5" box="[357,481,318,341]" pageId="13" pageNumber="14" type="paratype">
<collectionCode id="ED6BDFAED505FFA0FECFFE8477C6FEA5" box="[357,481,318,341]" pageId="13" pageNumber="14">PARATYPES</collectionCode>
</typeStatus>
<collectionCode id="ED6BDFAED505FFA0FE4FFE847437FEA5" box="[485,528,318,341]" country="Australia" name="Australian Museum" pageId="13" pageNumber="14" type="Museum">AM</collectionCode>
P58802,
<specimenCount id="9D7C8CE2D505FFA0FDDFFE84748DFEA6" box="[629,682,318,342]" pageId="13" pageNumber="14" type="female">2♀♀</specimenCount>
, 233 + coupled 3;
<collectionCode id="ED6BDFAED505FFA0FEB4FEE67748FE83" box="[286,367,348,371]" pageId="13" pageNumber="14">BMNH</collectionCode>
2000.1253–1254,
<specimenCount id="9D7C8CE2D505FFA0FD92FEE6744EFE83" box="[568,617,347,371]" pageId="13" pageNumber="14" type="female">1 ♀</specimenCount>
, 13;
<collectionCode id="ED6BDFAED505FFA0FD18FEE674CAFE83" box="[690,749,348,371]" country="Canada" httpUri="http://grbio.org/cool/zeys-ppzt" name="Nova Scotia Museum of Natural History" pageId="13" pageNumber="14">NSM</collectionCode>
Tokyo Cr13416,
<specimenCount id="9D7C8CE2D505FFA0FEE8FEC37741FE61" box="[322,358,377,401]" pageId="13" pageNumber="14" type="female">1♀</specimenCount>
, 13. Type material pooled from
<taxonomicName id="4C7A3CE8D505FFA0FFD3FE2D7702FE5D" box="[121,293,406,430]" class="Phaeophyceae" family="Dictyotaceae" genus="Dictyopteris" kingdom="Chromista" order="Dictyotales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FFD3FE2D76D9FE5E" box="[121,254,407,430]" italics="true" pageId="13" pageNumber="14">Dictyopteris</emphasis>
sp.
</taxonomicName>
, (49), plus
<taxonomicName id="4C7A3CE8D505FFA0FE36FE2D741FFE5D" box="[412,568,406,430]" class="Phaeophyceae" family="Sargassaceae" genus="Sargassum" kingdom="Chromista" order="Fucales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FE36FE2D7436FE5E" box="[412,529,407,430]" italics="true" pageId="13" pageNumber="14">Sargassum</emphasis>
sp.
</taxonomicName>
, (8),
<taxonomicName id="4C7A3CE8D505FFA0FDC5FE2D76BDFE3B" class="Phaeophyceae" family="Sargassaceae" genus="Cystophora" kingdom="Chromista" order="Fucales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FDC5FE2D74CAFE5E" box="[623,749,407,430]" italics="true" pageId="13" pageNumber="14">Cystophora</emphasis>
sp.
</taxonomicName>
, (2),
<taxonomicName id="4C7A3CE8D505FFA0FF71FE0E77BEFE3B" box="[219,409,436,459]" class="Phaeophyceae" family="Lessoniaceae" genus="Ecklonia" kingdom="Chromista" order="Laminariales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="radiata">
<emphasis id="B90E9B79D505FFA0FF71FE0E77BEFE3B" box="[219,409,436,459]" italics="true" pageId="13" pageNumber="14">Ecklonia radiata</emphasis>
</taxonomicName>
(8), infralittoral fringe rocks, Cronulla, Sydney (
<geoCoordinate id="EE4E21ACD505FFA0FEE0FE6B77B9FE18" box="[330,414,465,488]" degrees="34" direction="south" minutes="03" orientation="latitude" pageId="13" pageNumber="14" precision="925" value="-34.05">34°03'S</geoCoordinate>
<geoCoordinate id="EE4E21ACD505FFA0FE02FE6B742AFE18" box="[424,525,465,488]" degrees="151" direction="east" minutes="11" orientation="longitude" pageId="13" pageNumber="14" precision="925" value="151.18333">151°11'E</geoCoordinate>
),
<collectingCountry id="F36D07FBD505FFA0FD88FE6B74AFFE18" box="[546,648,465,488]" name="Australia" pageId="13" pageNumber="14">Australia</collectingCountry>
, 12.2.77,
<collectionCode id="ED6BDFAED505FFA0FFD3FE5476A9FDF5" box="[121,142,494,517]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="13" pageNumber="14" type="Museum">V</collectionCode>
.A. Harris.
</paragraph>
<paragraph id="8BC5476BD505FFA0FF3DFDB674CAFD00" blockId="13.[121,749,259,753]" pageId="13" pageNumber="14">
Material collected from Shelly Beach rocks, Cronulla, Sydney,
<collectingRegion id="49BE8989D505FFA0FF65FD9377A6FDB0" box="[207,385,553,576]" country="Australia" name="New South Wales" pageId="13" pageNumber="14">New South Wales</collectingRegion>
by
<collectionCode id="ED6BDFAED505FFA0FE09FD937790FDB0" box="[419,439,553,576]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="13" pageNumber="14" type="Museum">V</collectionCode>
.A. Harris. 7.2.74, washed from
<taxonomicName id="4C7A3CE8D505FFA0FFD3FDFD7736FDAD" box="[121,273,582,606]" class="Phaeophyceae" family="Sargassaceae" genus="Sargassum" kingdom="Chromista" order="Fucales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FFD3FDFD76CDFDAE" box="[121,234,583,606]" italics="true" pageId="13" pageNumber="14">Sargassum</emphasis>
sp.
</taxonomicName>
, 13. 21.8.75,
<taxonomicName id="4C7A3CE8D505FFA0FE03FDFD7477FDAD" box="[425,592,582,606]" class="Phaeophyceae" family="Dictyotaceae" genus="Dictyopteris" kingdom="Chromista" order="Dictyotales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FE03FDFD740EFDAE" box="[425,553,583,606]" italics="true" pageId="13" pageNumber="14">Dictyopteris</emphasis>
sp.
</taxonomicName>
,
<specimenCount id="9D7C8CE2D505FFA0FDF6FDFC7459FDAE" box="[604,638,582,606]" pageId="13" pageNumber="14" type="female">1♀</specimenCount>
, 233 + 2 coupled 33. 17.2.77,
<taxonomicName id="4C7A3CE8D505FFA0FECBFDDE7420FD8B" box="[353,519,612,635]" class="Phaeophyceae" family="Dictyotaceae" genus="Dictyopteris" kingdom="Chromista" order="Dictyotales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FECBFDDE77C6FD8B" box="[353,481,612,635]" italics="true" pageId="13" pageNumber="14">Dictyopteris</emphasis>
sp.
</taxonomicName>
, 13 + 2 coupled 33;
<taxonomicName id="4C7A3CE8D505FFA0FFD3FD3B7737FD68" box="[121,272,641,664]" class="Phaeophyceae" family="Sargassaceae" genus="Sargassum" kingdom="Chromista" order="Fucales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FFD3FD3B76CDFD68" box="[121,234,641,664]" italics="true" pageId="13" pageNumber="14">Sargassum</emphasis>
sp.
</taxonomicName>
,
<specimenCount id="9D7C8CE2D505FFA0FEB1FD3B7777FD69" box="[283,336,641,665]" pageId="13" pageNumber="14" type="female">2♀♀</specimenCount>
;
<taxonomicName id="4C7A3CE8D505FFA0FEF4FD3B77D9FD68" box="[350,510,641,664]" class="Phaeophyceae" family="Sargassaceae" genus="Cystophora" kingdom="Chromista" order="Fucales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FEF4FD3B77F0FD68" box="[350,471,641,664]" italics="true" pageId="13" pageNumber="14">Cystophora</emphasis>
sp.
</taxonomicName>
, 2 coupled 33; stones with coralline incrustation 13;
<taxonomicName id="4C7A3CE8D505FFA0FE16FD25744DFD46" box="[444,618,671,694]" class="Phaeophyceae" family="Lessoniaceae" genus="Ecklonia" kingdom="Chromista" order="Laminariales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="radiata">
<emphasis id="B90E9B79D505FFA0FE16FD25744DFD46" box="[444,618,671,694]" italics="true" pageId="13" pageNumber="14">Ecklonia radiata</emphasis>
</taxonomicName>
<specimenCount id="9D7C8CE2D505FFA0FDDAFD247483FD46" box="[624,676,670,694]" pageId="13" pageNumber="14" type="female">4♀♀</specimenCount>
, 433;
<taxonomicName id="4C7A3CE8D505FFA0FFD3FD067706FD23" box="[121,289,700,723]" class="Phaeophyceae" family="Dictyotaceae" genus="Dictyopteris" kingdom="Chromista" order="Dictyotales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FFD3FD0676DEFD23" box="[121,249,700,723]" italics="true" pageId="13" pageNumber="14">Dictyopteris</emphasis>
sp.
</taxonomicName>
,
<specimenCount id="9D7C8CE2D505FFA0FE84FD067779FD23" box="[302,350,699,723]" pageId="13" pageNumber="14" type="female">21♀</specimenCount>
, 193 + 1 coupled 3;
<taxonomicName id="4C7A3CE8D505FFA0FDFFFD0674CAFD23" box="[597,749,700,723]" class="Phaeophyceae" family="Sargassaceae" genus="Sargassum" kingdom="Chromista" order="Fucales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FDFFFD0674E1FD23" box="[597,710,700,723]" italics="true" pageId="13" pageNumber="14">Sargassum</emphasis>
sp.
</taxonomicName>
with other weeds
<specimenCount id="9D7C8CE2D505FFA0FE87FD637777FD01" box="[301,336,729,753]" pageId="13" pageNumber="14" type="female">2♀</specimenCount>
, 13 + 1 coupled 3;
<taxonomicName id="4C7A3CE8D505FFA0FD8EFD63749DFD00" box="[548,698,729,752]" class="Phaeophyceae" family="Sargassaceae" genus="Sargassum" kingdom="Chromista" order="Fucales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D505FFA0FD8EFD6374B2FD00" box="[548,661,729,752]" italics="true" pageId="13" pageNumber="14">Sargassum</emphasis>
sp.
</taxonomicName>
, 13.
</paragraph>
</subSubSection>
<subSubSection id="C36014E0D505FFA0FFD3FCAA77E7FB10" pageId="13" pageNumber="14" type="diagnosis">
<paragraph id="8BC5476BD505FFA0FFD3FCAA74CAFC6D" blockId="13.[121,749,784,1248]" pageId="13" pageNumber="14">
<emphasis id="B90E9B79D505FFA0FFD3FCAA76CFFCD8" bold="true" box="[121,232,784,808]" pageId="13" pageNumber="14">Diagnosis</emphasis>
.
<emphasis id="B90E9B79D505FFA0FF5DFCAB77A5FCD8" box="[247,386,785,808]" italics="true" pageId="13" pageNumber="14">Adult female</emphasis>
: dorsal ornamentation a network of ridges and oval areas of honeycomb, ventral surface of cephalosome wrinkled; sternal plate of metasome segment 4 fimbriate, not ridged; comb plates on labrum with many ridges (&gt;8); caudal ramus elongate, rectangular (L/W = 3.2),
</paragraph>
<paragraph id="8BC5476BD505FFA0FF3AFC1977E7FB10" blockId="13.[121,749,784,1248]" pageId="13" pageNumber="14">
seta
<emphasis id="B90E9B79D505FFA0FF14FC1976F3FC48" bold="true" box="[190,212,931,952]" pageId="13" pageNumber="14">
<superScript id="7C0FEA23D505FFA0FF14FC1976E1FC41" attach="left" box="[190,198,931,945]" fontSize="6" pageId="13" pageNumber="14">2</superScript>
<subScript id="17FE452ED505FFA0FF66FC1076F3FC48" attach="right" box="[204,212,938,952]" fontSize="6" pageId="13" pageNumber="14">3</subScript>
</emphasis>
down ramus, terminal setae all large, pinnate, seta T3 close to T2, seta T4 close to medial corner; geniculate setae of antenna long, J-shaped (twice length of endopod segment 2), terminal part curved, pectinate; lateral denticulate peg area on P1 endopod large (&gt;½ endopod width), large medial peg area present; segments 2 &amp; 3 of P4 endopod not fused; anterolateral edge of P5 exopod with chitinous striations.
<emphasis id="B90E9B79D505FFA0FEE3FBCB779DFB78" box="[329,442,1137,1160]" italics="true" pageId="13" pageNumber="14">Adult male</emphasis>
: aesthetasc on antennule with bulbous base, coupling denticles small; P2 endopod terminates in two plumose setae; P5 with rows of setules at the base of each terminal seta.
</paragraph>
</subSubSection>
<subSubSection id="C36014E0D505FFA0FFD3FABA728AF98F" pageId="13" pageNumber="14" type="description">
<paragraph id="8BC5476BD505FFA0FFD3FABA742CFA15" blockId="13.[121,749,1280,1509]" pageId="13" pageNumber="14">
<emphasis id="B90E9B79D505FFA0FFD3FABA76DEFAE8" bold="true" box="[121,249,1280,1304]" pageId="13" pageNumber="14">Dimensions</emphasis>
.
<emphasis id="B90E9B79D505FFA0FEAFFABB777AFAE8" box="[261,349,1281,1304]" italics="true" pageId="13" pageNumber="14">Females</emphasis>
: mean length
<quantity id="4C82EA8ED505FFA0FE45FABB746CFAE8" box="[495,587,1281,1304]" metricMagnitude="-4" metricUnit="m" metricValue="9.3" pageId="13" pageNumber="14" unit="mm" value="0.93">0.93 mm</quantity>
(SD = 0.026,
<emphasis id="B90E9B79D505FFA0FD71FABB74CAFAE8" box="[731,749,1281,1304]" italics="true" pageId="13" pageNumber="14">N</emphasis>
= 20), cephalosome width
<quantity id="4C82EA8ED505FFA0FE3CFAA477D2FAC5" box="[406,501,1310,1333]" metricMagnitude="-4" metricUnit="m" metricValue="6.1" pageId="13" pageNumber="14" unit="mm" value="0.61">0.61 mm</quantity>
(SD = 0.019,
<emphasis id="B90E9B79D505FFA0FD38FAA47483FAC5" box="[658,676,1310,1333]" italics="true" pageId="13" pageNumber="14">N</emphasis>
= 20), body length to width ratio 1.52. Rostrum width
<quantity id="4C82EA8ED505FFA0FDCBFA81749AFAA2" box="[609,701,1339,1362]" metricMagnitude="-4" metricUnit="m" metricValue="1.2" pageId="13" pageNumber="14" unit="mm" value="0.12">0.12 mm</quantity>
(SD = 0.005,
<emphasis id="B90E9B79D505FFA0FF79FAE376C2FA80" box="[211,229,1369,1392]" italics="true" pageId="13" pageNumber="14">N</emphasis>
= 20), ratio of body width to rostrum 5.1. Urosome width to length ratio 1.33. Caudal ramus length to width ratio 3.2, dilation index 7.3.
<emphasis id="B90E9B79D505FFA0FEC4FA29778AFA5A" box="[366,429,1427,1450]" italics="true" pageId="13" pageNumber="14">Males</emphasis>
: mean length
<quantity id="4C82EA8ED505FFA0FDEFFA297483FA5A" box="[581,676,1427,1450]" metricMagnitude="-4" metricUnit="m" metricValue="6.7" pageId="13" pageNumber="14" unit="mm" value="0.67">0.67 mm</quantity>
(SD = 0.019,
<emphasis id="B90E9B79D505FFA0FF14FA0B76F7FA38" box="[190,208,1457,1480]" italics="true" pageId="13" pageNumber="14">N</emphasis>
= 19), cephalosome width
<quantity id="4C82EA8ED505FFA0FE4BFA0B741BFA38" box="[481,572,1457,1480]" metricMagnitude="-4" metricUnit="m" metricValue="5.3" pageId="13" pageNumber="14" unit="mm" value="0.53">0.53 mm</quantity>
(SD = 0.014,
<emphasis id="B90E9B79D505FFA0FD6DFA0B74FEFA38" box="[711,729,1457,1480]" italics="true" pageId="13" pageNumber="14">N</emphasis>
= 19), ratio of body length to width 1.26.
</paragraph>
<paragraph id="8BC5476BD505FFA0FFD3F9BF73A2FE6A" blockId="13.[121,749,1541,1975]" lastBlockId="13.[794,1422,153,1232]" pageId="13" pageNumber="14">
<emphasis id="B90E9B79D505FFA0FFD3F9BF772EF9ED" bold="true" box="[121,265,1541,1565]" pageId="13" pageNumber="14">Description</emphasis>
.
<emphasis id="B90E9B79D505FFA0FEB7F9BC7792F9ED" box="[285,437,1542,1565]" italics="true" pageId="13" pageNumber="14">Adult female</emphasis>
(
<figureCitation id="13415BEED505FFA0FE60F9BC740EF9ED" box="[458,553,1542,1565]" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">Fig. 9A</figureCitation>
) pale yellow or colourless. Anterior outline of cephalosome semicircular, rostrum prominent. Scanning electron micrographs reveal a fine network of ridges covering the dorsal surface of the body (Plate 2A &amp; B), several more prominent ridges run parallel to the anterior border of the cephalosome and in various directions elsewhere. Towards the mid-line, there are many oval areas in which the cuticle is raised up to form a network of ridges that resemble honeycomb (see Plate 2C &amp; D). Ventral surface of cephalosome wrinkled (
<figureCitation id="13415BEED505FFA0FF2BF89176F4F8B2" box="[129,211,1835,1858]" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">Fig. 9B</figureCitation>
). Numerous sensillae with basal collar are scattered over the dorsal surface, dorsal pits between ridges about 2 µm. Hyaline border, granular, 15 µm wide. Small patch of setules anterior to labrum, cuticle of labrum wrinkled, comb plates with numerous ridges (&gt;8) (
<figureCitation id="13415BEED505FFA0FE44F81A7475F847" box="[494,594,1952,1975]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10C</figureCitation>
). Sternal plate of metasome segment 4 with hair-like setules, no ridges. Urosome broad without lateral notch or cleft (
<figureCitation id="13415BEED505FFA0FA8CFF0C73A7FF3D" box="[1318,1408,182,205]" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">Fig. 9K</figureCitation>
), boundary between anterior and posterior lobes not distinct, anterior lobe without marginal setules, posterior lobe with large marginal setules, one sensory seta on posterior border, medial corner square. Caudal arch very deep (60% of urosome length). Caudal ramus elongate, rectangular, expanded distally, dorsal surface with a few reticulate ridges (
<figureCitation id="13415BEED505FFA0FC88FE397551FE6A" box="[802,886,387,410]" captionStart="Figure 6" captionStartId="11.[219,288,1702,1723]" captionTargetBox="[220,1308,151,1686]" captionTargetId="figure-158@11.[200,1348,151,1686]" captionTargetPageId="11" captionText="Figure 6. Comparison of caudal rami (left dorsal focus, right ventral focus). A, Dilatatiocauda multidenticulata n.sp. B, D. medialis n.sp., showing dorsal reticulate pattern. C, D. tristanensis (Wiborg, 1964), right caudal ramus, after Hicks (1982). D, D. retroseta n.sp. E, D. bipartita (Kim &amp; Kim, 1997), (left ramus slightly foreshortened). F, D. plana (Tiemann, 1977), left caudal ramus, after Tiemann (1977). Scale bar:A,B,D,F = 0.1 mm; C,E. = 0.133 mm." pageId="13" pageNumber="14">Fig. 6D</figureCitation>
). Alpha seta inserted distally (Hicks’ index = 33%).
</paragraph>
<paragraph id="8BC5476BD505FFA0FCB0FE1B75CCFB20" blockId="13.[794,1422,153,1232]" pageId="13" pageNumber="14">
Alpha and beta setae close together (L/[] = 16.6). Terminal setae T1,T2 &amp; T4 large, equal in size, pinnate, seta T3 slender, close to T2, seta T4 close to medial corner (set in
<emphasis id="B90E9B79D505FFA0FCCBFE427551FDFD" bold="true" box="[865,886,504,525]" pageId="13" pageNumber="14">
<superScript id="7C0FEA23D505FFA0FCCBFE42754EFDF6" attach="left" box="[865,873,504,518]" fontSize="6" pageId="13" pageNumber="14">1</superScript>
8
</emphasis>
of width), terminal fringe of fine setules (
<figureCitation id="13415BEED505FFA0FA9EFE4373A7FDE0" box="[1332,1408,505,528]" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">Fig. 9J</figureCitation>
). Limbs typical of family. Antenna exopod with five plumulose setae plus spinous seta (
<figureCitation id="13415BEED505FFA0FB0DFD897328FDBA" box="[1191,1295,563,586]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10A</figureCitation>
), basis and segment 1 of endopod with triangular setules along edge, segment 1 without seta, segment 2 with three lateral and six terminal setae, geniculate setae very long, J-shaped (longest about twice length of endopod segment 2), terminal section curved, pectinate (comb-like with one row of teeth), claw long, pectinate. Posterior lobe of mandibular palp has four bulbous pilose setae with wing-like expansion at their base (
<figureCitation id="13415BEED505FFA0FCF0FCA4759AFCC5" box="[858,957,798,821]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10E</figureCitation>
), anterior lobe with small area of hair-like setules. Maxilliped coxal lobes reduced, widely separated in mid-line, edge fimbriate (
<figureCitation id="13415BEED505FFA0FBE5FCE37280FC80" box="[1103,1191,857,880]" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">Fig. 9D</figureCitation>
), basis not fimbriate, fimbriate process absent. First segment of P1 exopod with ridge parallel to edge (
<figureCitation id="13415BEED505FFA0FBA2FC29727BFC5A" box="[1032,1116,915,938]" captionStart="Figure 3" captionStartId="6.[265,332,1687,1708]" captionTargetBox="[246,1353,174,1665]" captionTargetId="figure-10@6.[234,1383,151,1665]" captionTargetPageId="6" captionText="Figure 3. Comparison of first peraeopods (ventral view, denticulate area stippled).A, Dilatatiocauda multidenticulata n.sp., P1 right limb. B, D. dilatata (Hicks, 1971), P1 right limb. C, D. medialis n.sp., P1 left limb. D, D. retroseta n.sp., P1 right limb. E, D. bipartita (Kim &amp; Kim, 1997), P1 left limb. Scale bar: A = 0.1 mm; B = 0.08 mm; C,D, 0.133 mm; E = 0.17 mm." pageId="13" pageNumber="14">Fig. 3D</figureCitation>
), lateral denticulate peg area on endopod large (&gt;½ endopod width), medial denticulate peg area along inner edge, striated band parallel to fimbriate crescent
<emphasis id="B90E9B79D505FFA0FCD0FC5675A6FBF3" box="[890,897,1004,1027]" italics="true" pageId="13" pageNumber="14">/</emphasis>
-shaped. P3 (
<figureCitation id="13415BEED505FFA0FBA5FC517254FBF2" box="[1039,1139,1003,1026]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10H</figureCitation>
), spinous seta on segment 2 of endopod serrulate, equal in length to endopod, J-shaped serrate spinous seta on segment 3 longer than endopod (1.2:1). Segments 2 &amp; 3 of P4 endopod are not fused (
<figureCitation id="13415BEED505FFA0FAC8FBF9756DFB88" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10B</figureCitation>
). P5 exopod lanceolate (
<figureCitation id="13415BEED505FFA0FBF7FBDB7298FB88" box="[1117,1215,1121,1144]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10F</figureCitation>
), four dorsal setae near apex (first very small), anterolateral border with 10 to 15 chitinous striations (
<figureCitation id="13415BEED505FFA0FBB9FB217251FB42" box="[1043,1142,1179,1202]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10G</figureCitation>
). Females with 6 to
<specimenCount id="9D7C8CE2D505FFA0FAE3FB2173AAFB42" box="[1353,1421,1179,1202]" pageId="13" pageNumber="14" type="egg">9 eggs</specimenCount>
in ovisac (mode 8).
</paragraph>
<paragraph id="8BC5476BD505FFA0FCB0FB51728AF98F" blockId="13.[794,1422,1258,1663]" pageId="13" pageNumber="14">
<emphasis id="B90E9B79D505FFA0FCB0FB5175BFFAF2" box="[794,920,1259,1282]" italics="true" pageId="13" pageNumber="14">Adult male</emphasis>
(
<figureCitation id="13415BEED505FFA0FC01FB507222FAF1" box="[939,1029,1258,1281]" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">Fig. 9F</figureCitation>
). Yellow or colourless. Truncated anterior border of cephalosome convex in mid-line, concave at either side, lateral angle of antennule socket prominent (
<figureCitation id="13415BEED505FFA0FC88FAF875B6FAA9" box="[802,913,1346,1369]" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">Fig. 9G,H</figureCitation>
). Surface ornamentation as for female. Rostrum
<quantity id="4C82EA8ED505FFA0FCB0FADA755AFA87" box="[794,893,1376,1399]" metricMagnitude="-5" metricUnit="m" metricValue="7" pageId="13" pageNumber="14" unit="mm" value="0.07">0.07 mm</quantity>
wide, cephalosome width to rostrum ratio = 8. Caudal ramus short, rectangular (L/W = 1.25), setation similar to female (
<figureCitation id="13415BEED505FFA0FC50FA20724EFA41" box="[1018,1129,1434,1457]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10D</figureCitation>
). Coupling apparatus on antennule not conspicuous, one small denticle with fine denticulations and plumose seta (
<figureCitation id="13415BEED505FFA0FB3CFA6F7322FA1C" box="[1174,1285,1493,1516]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10I,J</figureCitation>
), aesthetasc swollen near base, dactylus terminates in small projection, base of dactylus expanded (
<figureCitation id="13415BEED505FFA0FBE2F9AA7299F9D7" box="[1096,1214,1552,1575]" captionStart="Figure 10" captionStartId="16.[265,333,1664,1685]" captionTargetBox="[252,1339,151,1638]" captionTargetId="figure-10@16.[252,1369,151,1638]" captionTargetPageId="16" captionText="Figure 10. Dilatatiocauda retroseta n.sp.: A, antenna. B, P4 endopod. C, combs on labrum. D, male caudal rami. E, posterior lobe of mandibular palp showing wing-like expansion of pilose bulbous setae. F, female P5. G, striations on “shoulder” of P5. H, P3 endopod. I,J,K, male antennule (I, ventral view showing bulbous aesthetasc; J, detail of coupling denticles; K, dactylus). Scale bar: A = 0.125 mm; B,H = 0.15 mm; C,E,I,K = 0.1 mm; D,G = 0.133 mm; F = 0.225 mm; J = 0.08 mm." pageId="13" pageNumber="14">Fig. 10I,K</figureCitation>
). P2 endopod (
<figureCitation id="13415BEED505FFA0FAC8F9AA751EF9B4" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">Fig. 9E</figureCitation>
) with two plumose terminal setae. First seta on P5 with long row of ventral setules (&gt;20), short row of setules at base of each remaining seta (
<figureCitation id="13415BEED505FFA0FBFEF9D27287F98F" box="[1108,1184,1640,1663]" captionStart="Figure 9" captionStartId="15.[219,288,1664,1685]" captionTargetBox="[212,1292,151,1650]" captionTargetId="figure-9@15.[212,1323,151,1650]" captionTargetPageId="15" captionText="Figure 9. Dilatatiocauda retroseta n.sp.: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped.E, male P2 endopod.F, male.G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm." pageId="13" pageNumber="14">Fig. 9I</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="C36014E0D505FFA2FCB0F9237426F843" lastPageId="15" lastPageNumber="16" pageId="13" pageNumber="14" type="discussion">
<paragraph id="8BC5476BD505FFA0FCB0F923720DF848" blockId="13.[794,1422,1689,1977]" pageId="13" pageNumber="14">
<emphasis id="B90E9B79D505FFA0FCB0F92375A7F941" bold="true" box="[794,896,1689,1713]" pageId="13" pageNumber="14">Remarks</emphasis>
.
<taxonomicName id="4C7A3CE8D505FFA0FC26F92072AAF941" authorityName="Harris" authorityYear="2002" box="[908,1165,1690,1713]" class="Hexanauplia" family="Porcellidiidae" genus="Dilatatiocauda" kingdom="Animalia" order="Harpacticoida" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="retroseta">
<emphasis id="B90E9B79D505FFA0FC26F92072AAF941" box="[908,1165,1690,1713]" italics="true" pageId="13" pageNumber="14">Dilatatiocauda retroseta</emphasis>
</taxonomicName>
is the largest of the three species described from
<collectingCountry id="F36D07FBD505FFA0FBA4F90D7257F93E" box="[1038,1136,1719,1742]" name="Australia" pageId="13" pageNumber="14">Australia</collectingCountry>
and its general proportions closely resemble
<taxonomicName id="4C7A3CE8D505FFA0FC71F96E7275F91B" authorityName="Harris" authorityYear="2002" baseAuthorityName="Hicks" baseAuthorityYear="1971" box="[987,1106,1748,1771]" class="Hexanauplia" family="Porcellidiidae" genus="Dilatatiocauda" kingdom="Animalia" order="Harpacticoida" pageId="13" pageNumber="14" phylum="Arthropoda" rank="species" species="dilatata">
<emphasis id="B90E9B79D505FFA0FC71F96E7275F91B" box="[987,1106,1748,1771]" italics="true" pageId="13" pageNumber="14">D. dilatata</emphasis>
</taxonomicName>
as figured by
<bibRefCitation id="EFEB3A9AD505FFA0FB5CF96E73AEF91B" author="Hicks, G" box="[1270,1417,1748,1771]" pageId="13" pageNumber="14" pagination="86 - 119" refId="ref14878" refString="Hicks, G. R. F., 1971. Some littoral harpacticoid copepods, including five new species, from Wellington, New Zealand. New Zealand Journal of Marine and Freshwater Research 5: 86 - 119." type="journal article" year="1971">Hicks (1971)</bibRefCitation>
. However, it is distinguished from the latter by the very low position of the seta on the caudal ramus, very long Jshaped geniculate setae on the antenna, a curiously swollen aesthetasc on the male antennule and the absence of ridges on the sternal plate of metasome segment 4. The specific name refers to the position of the seta (L.
<emphasis id="B90E9B79D505FFA0FB7CF83E732EF86B" box="[1238,1289,1924,1947]" italics="true" pageId="13" pageNumber="14">retro</emphasis>
= backward, behind +
<emphasis id="B90E9B79D505FFA0FC2AF818759EF849" box="[896,953,1954,1977]" italics="true" pageId="13" pageNumber="14">saeta</emphasis>
= bristle).
</paragraph>
<caption id="DF0517E3D506FFA3FEA3F92D7513F90C" pageId="14" pageNumber="15" startId="14.[265,333,1687,1708]" targetBox="[265,1355,151,1678]" targetPageId="14">
<paragraph id="8BC5476BD506FFA3FEA3F92D7513F90C" blockId="14.[265,1368,1687,1788]" pageId="14" pageNumber="15">
<emphasis id="B90E9B79D506FFA3FEA3F92D7747F95C" bold="true" box="[265,352,1687,1708]" pageId="14" pageNumber="15">Figure 8</emphasis>
.
<taxonomicName id="4C7A3CE8D506FFA3FEC7F92D747DF95C" authority="Harris, 2002" authorityName="Harris" authorityYear="2002" box="[365,602,1687,1708]" class="Hexanauplia" family="Porcellidiidae" genus="Dilatatiocauda" kingdom="Animalia" order="Harpacticoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="medialis" status="sp. nov.">
<emphasis id="B90E9B79D506FFA3FEC7F92D747DF95C" box="[365,602,1687,1708]" italics="true" pageId="14" pageNumber="15">Dilatatiocauda medialis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A23D2602D506FFA3FDCAF92D74B5F95C" box="[608,658,1687,1708]" pageId="14" pageNumber="15" rank="species">n.sp.</taxonomicNameLabel>
: A, P4. B, female P5, dorsal view. C, P3. D, male right caudal ramus. E, male P5, ventral view. F, combs on labrum. G, male right antennule seen from dorsal side. H, left antennule, ventral view (dactylus obscures coupling denticles). I, coupling denticles, dorsal view. Scale bar: A,B,C = 0.15 mm; D = 0.08 mm; E,G,H = 0.1 mm; F = 0.133 mm; I = 0.06 mm.
</paragraph>
</caption>
<paragraph id="8BC5476BD506FFA2FF6EF89D7426F843" blockId="14.[166,794,1831,2001]" lastBlockId="15.[121,749,1831,1971]" lastPageId="15" lastPageNumber="16" pageId="14" pageNumber="15">
This species shows a remarkable resemblance in many of its features to the animal described by
<bibRefCitation id="EFEB3A9AD506FFA3FDCDF8FE74DBF8AB" author="Wiborg, K" box="[615,764,1860,1883]" pageId="14" pageNumber="15" pagination="1 - 44" refId="ref15354" refString="Wiborg, K. F., 1964. Marine copepods of Tristan da Cunha. Results of the Norwegian Scientific Expedition to Tristan da Cunha 1937 - 1938 51: 1 - 44." type="journal article" year="1964">Wiborg, 1964</bibRefCitation>
as
<taxonomicName id="4C7A3CE8D506FFA3FF0CF8D87797F889" authorityName="Wiborg" authorityYear="1964" box="[166,432,1890,1913]" class="Hexanauplia" family="Porcellidiidae" genus="Porcellidium" kingdom="Animalia" order="Harpacticoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="tristanense">
<emphasis id="B90E9B79D506FFA3FF0CF8D87797F889" box="[166,432,1890,1913]" italics="true" pageId="14" pageNumber="15">Porcellidium tristanense</emphasis>
</taxonomicName>
. Most striking is the similarity of the antennae. In both species the geniculate setae are Jshaped and about twice the length of endopod segment 2 (in
<taxonomicName id="4C7A3CE8D506FFA3FF66F8007779F821" authorityName="Wiborg" authorityYear="1964" box="[204,350,1978,2001]" class="Hexanauplia" family="Porcellidiidae" genus="Porcellidium" kingdom="Animalia" order="Harpacticoida" pageId="14" pageNumber="15" phylum="Arthropoda" rank="species" species="tristanense">
<emphasis id="B90E9B79D506FFA3FF66F8007779F821" box="[204,350,1978,2001]" italics="true" pageId="14" pageNumber="15">P. tristanense</emphasis>
</taxonomicName>
the curved end piece has a double comb edge). Other similarities are the position of the seta on the caudal ramus; a fimbriate border on the coxal lobe of the maxilliped; presence of denticulate pegs on the medial edge of P1 endopod; female P5 with chitinous striations on the anterolateral border and setules at the base of each terminal seta on male P5. Despite these resemblances, the species are distinct. The most important difference being the possession of four terminal setae on the male P2 endopod in
<taxonomicName id="4C7A3CE8D507FFA2FF31F8D87719F889" authorityName="Wiborg" authorityYear="1964" box="[155,318,1890,1913]" class="Hexanauplia" family="Porcellidiidae" genus="Porcellidium" kingdom="Animalia" order="Harpacticoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="tristanense">
<emphasis id="B90E9B79D507FFA2FF31F8D87719F889" box="[155,318,1890,1913]" italics="true" pageId="15" pageNumber="16">P. tristanense</emphasis>
</taxonomicName>
, but only two in
<taxonomicName id="4C7A3CE8D507FFA2FDB6F8D8748AF889" authorityName="Harris" authorityYear="2002" box="[540,685,1890,1913]" class="Hexanauplia" family="Porcellidiidae" genus="Dilatatiocauda" kingdom="Animalia" order="Harpacticoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="retroseta">
<emphasis id="B90E9B79D507FFA2FDB6F8D8748AF889" box="[540,685,1890,1913]" italics="true" pageId="15" pageNumber="16">D. retroseta</emphasis>
</taxonomicName>
. The relationship of
<taxonomicName id="4C7A3CE8D507FFA2FE86F8C577EFF866" authorityName="Wiborg" authorityYear="1964" box="[300,456,1919,1942]" class="Hexanauplia" family="Porcellidiidae" genus="Porcellidium" kingdom="Animalia" order="Harpacticoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="tristanense">
<emphasis id="B90E9B79D507FFA2FE86F8C577EFF866" box="[300,456,1919,1942]" italics="true" pageId="15" pageNumber="16">P. tristanense</emphasis>
</taxonomicName>
and
<taxonomicName id="4C7A3CE8D507FFA2FDACF8C574B7F866" authorityName="Harris" authorityYear="2002" box="[518,656,1919,1942]" class="Hexanauplia" family="Porcellidiidae" genus="Dilatatiocauda" kingdom="Animalia" order="Harpacticoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="retroseta">
<emphasis id="B90E9B79D507FFA2FDACF8C574B7F866" box="[518,656,1919,1942]" italics="true" pageId="15" pageNumber="16">D. retroseta</emphasis>
</taxonomicName>
will be considered further in the discussion.
</paragraph>
</subSubSection>
<caption id="DF0517E3D507FFA2FF71F93A74E1F8F0" pageId="15" pageNumber="16" startId="15.[219,288,1664,1685]" targetBox="[212,1292,151,1650]" targetPageId="15">
<paragraph id="8BC5476BD507FFA2FF71F93A74E1F8F0" blockId="15.[219,1323,1664,1792]" pageId="15" pageNumber="16">
<emphasis id="B90E9B79D507FFA2FF71F93A7713F965" bold="true" box="[219,308,1664,1685]" pageId="15" pageNumber="16">Figure 9</emphasis>
.
<taxonomicName id="4C7A3CE8D507FFA2FEE9F93B7411F966" authority="Harris, 2002" authorityName="Harris" authorityYear="2002" box="[323,566,1665,1686]" class="Hexanauplia" family="Porcellidiidae" genus="Dilatatiocauda" kingdom="Animalia" order="Harpacticoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="retroseta" status="sp. nov.">
<emphasis id="B90E9B79D507FFA2FEE9F93B7411F966" box="[323,566,1665,1686]" italics="true" pageId="15" pageNumber="16">Dilatatiocauda retroseta</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A23D2602D507FFA2FD94F93A7457F965" box="[574,624,1664,1685]" pageId="15" pageNumber="16" rank="species">n.sp.</taxonomicNameLabel>
: A, female. B,C, anterior of female cephalosome (B, ventral view; C, dorsal view; hyaline border stippled). D, maxilliped. E, male P2 endopod. F, male. G,H, anterior of male cephalosome (G, dorsal focus; H, ventral focus). I, male P5, ventral view. J, detail of female caudal rami showing terminal setae (left dorsal focus, right ventral focus). K, female urosome, dorsal view. Scale bar: A,F = 0.6 mm; B,C,G,H,K = 0.3 mm; D,J = 0.08 mm; E = 0.15 mm; I = 0.133 mm.
</paragraph>
</caption>
<subSubSection id="C36014E0D507FFA2FCB0F89C72F1F820" pageId="15" pageNumber="16" type="distribution">
<paragraph id="8BC5476BD507FFA2FCB0F89C72F1F820" blockId="15.[794,1421,1830,2001]" pageId="15" pageNumber="16">
<emphasis id="B90E9B79D507FFA2FCB0F89C7274F8CE" bold="true" box="[794,1107,1830,1854]" pageId="15" pageNumber="16">Distribution and abundance</emphasis>
.All specimens were collected at Cronulla, Sydney,
<collectingRegion id="49BE8989D507FFA2FBA9F8FE72EDF8AB" box="[1027,1226,1860,1883]" country="Australia" name="New South Wales" pageId="15" pageNumber="16">New South Wales</collectingRegion>
, where they were found associated with the more abundant
<taxonomicName id="4C7A3CE8D507FFA2FAB5F8D875B3F866" authorityName="Harris" authorityYear="2002" class="Hexanauplia" family="Porcellidiidae" genus="Dilatatiocauda" kingdom="Animalia" order="Harpacticoida" pageId="15" pageNumber="16" phylum="Arthropoda" rank="species" species="multidenticulata">
<emphasis id="B90E9B79D507FFA2FAB5F8D875B3F866" italics="true" pageId="15" pageNumber="16">D. multidenticulata</emphasis>
</taxonomicName>
. A small population was found on
<taxonomicName id="4C7A3CE8D507FFA2FAA2F8C5751EF843" class="Phaeophyceae" family="Dictyotaceae" genus="Dictyopteris" kingdom="Chromista" order="Dictyotales" pageId="15" pageNumber="16" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D507FFA2FAA2F8C573AAF866" box="[1288,1421,1919,1942]" italics="true" pageId="15" pageNumber="16">Dictyopteris</emphasis>
sp.
</taxonomicName>
Isolated animals have been collected from
<taxonomicName id="4C7A3CE8D507FFA2FAB2F826751CF820" class="Phaeophyceae" family="Sargassaceae" genus="Sargassum" kingdom="Chromista" order="Fucales" pageId="15" pageNumber="16" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D507FFA2FAB2F82673AAF843" box="[1304,1421,1948,1971]" italics="true" pageId="15" pageNumber="16">Sargassum</emphasis>
sp.
</taxonomicName>
,
<taxonomicName id="4C7A3CE8D507FFA2FCECF80075DBF821" box="[838,1020,1978,2001]" class="Phaeophyceae" family="Lessoniaceae" genus="Ecklonia" kingdom="Chromista" order="Laminariales" pageId="15" pageNumber="16" phylum="Ochrophyta" rank="species" species="radiata">
<emphasis id="B90E9B79D507FFA2FCECF80075DBF821" box="[838,1020,1978,2001]" italics="true" pageId="15" pageNumber="16">Ecklonia radiata</emphasis>
</taxonomicName>
and
<taxonomicName id="4C7A3CE8D507FFA2FB98F80072F1F820" box="[1074,1238,1977,2001]" class="Phaeophyceae" family="Sargassaceae" genus="Cystophora" kingdom="Chromista" order="Fucales" pageId="15" pageNumber="16" phylum="Ochrophyta" rank="species" species="undetermined">
<emphasis id="B90E9B79D507FFA2FB98F8007297F821" box="[1074,1200,1978,2001]" italics="true" pageId="15" pageNumber="16">Cystophora</emphasis>
sp.
</taxonomicName>
</paragraph>
</subSubSection>
</treatment>
</document>
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