384 lines
55 KiB
XML
384 lines
55 KiB
XML
<document id="792C8793C89E87AFDE50483B8A483785" ID-CLB-Dataset="8297" ID-DOI="10.11646/zootaxa.4921.1.1" ID-GBIF-Dataset="6f7c2191-a210-4685-98f6-7a90241131df" ID-ISSN="1175-5326" ID-Zenodo-Dep="4496015" ID-ZooBank="2A77E821-52F4-450C-8964-7928D36C0906" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1612329124618" checkinUser="plazi" docAuthor="Conlan, Kathleen E." docDate="2021" docId="03DFE565EA58D44CFF133270D0F8FE08" docLanguage="en" docName="zootaxa.4921.1.1.pdf" docOrigin="Zootaxa 4921 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Pleojassa Conlan 2021, n. gen." docType="treatment" docVersion="6" lastPageNumber="39" masterDocId="FFE69D1DEA7CD46AFF843708D564FFDA" masterDocTitle="New genera for species of Jassa Leach (Crustacea: Amphipoda) and their relationship to a revised Ischyrocerini" masterLastPageNumber="72" masterPageNumber="1" pageNumber="37" updateTime="1698926504305" updateUser="ExternalLinkService">
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<mods:titleInfo id="AED8EFCE3F2503815703676EC4B47E0A">
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<mods:title id="3834E4EA14B815E23C6EA459DB0D7B48">New genera for species of Jassa Leach (Crustacea: Amphipoda) and their relationship to a revised Ischyrocerini</mods:title>
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<mods:name id="5BFADB356379336B60C67D25BD0E2DE5" type="personal">
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<mods:roleTerm id="A38D85D28FD1EFF4017F9BA5144913EB">Author</mods:roleTerm>
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<mods:namePart id="E30075857025EAF60B23690F3B2ADE3F">Conlan, Kathleen E.</mods:namePart>
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<mods:title id="FEAC724097924BFE81EDCD651D4F4639">Zootaxa</mods:title>
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</mods:titleInfo>
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<mods:part id="F879E6FF1ED5FCA1C2D6AEBF2973646B">
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<mods:date id="8BA257059D0A2E7A88738B2A65350C6C">2021</mods:date>
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<mods:number id="CEF39FB1DFF08D1A9832199017FD73FA">2021-02-03</mods:number>
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<mods:detail id="30BD3E3C98041FFEC4A94FF2494484E6" type="volume">
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<mods:number id="BC40645F7E29D0BA8AD361B1484B8E62">4921</mods:number>
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<mods:identifier id="8EB9005C92A8430CF967AA40118150AF" type="CLB-Dataset">8297</mods:identifier>
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<mods:identifier id="6AF78D739D0B4A523C58A4AA39568A00" type="DOI">10.11646/zootaxa.4921.1.1</mods:identifier>
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<mods:identifier id="753762A2F11D06512B77C68A62AD7C9A" type="ISSN">1175-5326</mods:identifier>
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<treatment id="03DFE565EA58D44CFF133270D0F8FE08" ID-DOI="http://doi.org/10.5281/zenodo.4545307" ID-GBIF-Taxon="177420670" ID-Zenodo-Dep="4545307" LSID="urn:lsid:plazi:treatment:03DFE565EA58D44CFF133270D0F8FE08" httpUri="http://treatment.plazi.org/id/03DFE565EA58D44CFF133270D0F8FE08" lastPageId="38" lastPageNumber="39" pageId="36" pageNumber="37">
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<subSubSection id="C36C07F8EA58D44EFF133270D4DEFA48" box="[151,442,1399,1426]" pageId="36" pageNumber="37" type="nomenclature">
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<paragraph id="8BC95473EA58D44EFF133270D4DEFA48" blockId="36.[151,442,1399,1426]" box="[151,442,1399,1426]" pageId="36" pageNumber="37">
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<emphasis id="B9028861EA58D44EFF133270D4DEFA48" bold="true" box="[151,442,1399,1426]" italics="true" pageId="36" pageNumber="37">
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Genus
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<taxonomicName id="4C762FF0EA58D44EFF6A327FD404FA48" ID-CoL="8587B" authority="Conlan, 2021" authorityName="Conlan" authorityYear="2021" box="[238,352,1399,1426]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="36" pageNumber="37" phylum="Arthropoda" rank="genus" status="gen. nov.">Pleojassa</taxonomicName>
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<taxonomicNameLabel id="A231351AEA58D44EFEEC3270D4DEFA48" box="[360,442,1400,1426]" pageId="36" pageNumber="37" rank="genus">n. gen.</taxonomicNameLabel>
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</emphasis>
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</paragraph>
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</subSubSection>
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<subSubSection id="C36C07F8EA58D44FFF1332C8D4C8FBEF" lastPageId="37" lastPageNumber="38" pageId="36" pageNumber="37" type="description">
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<paragraph id="8BC95473EA58D44EFF1332C8D665FA00" blockId="36.[151,1437,1472,2039]" box="[151,769,1472,1499]" pageId="36" pageNumber="37">
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<emphasis id="B9028861EA58D44EFF1332C8D4E3FA00" bold="true" box="[151,391,1472,1498]" pageId="36" pageNumber="37">Description of male.</emphasis>
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Maximum body length
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<quantity id="4C8EF996EA58D44EFD1232C8D79EFA01" box="[662,762,1472,1499]" metricMagnitude="-2" metricUnit="m" metricValue="1.08" pageId="36" pageNumber="37" unit="mm" value="10.8">10.8 mm</quantity>
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.
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</paragraph>
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<paragraph id="8BC95473EA58D44EFF4332ECD148FA24" blockId="36.[151,1437,1472,2039]" box="[199,1068,1508,1535]" pageId="36" pageNumber="37">
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<emphasis id="B9028861EA58D44EFF4332ECD45FFA24" box="[199,315,1508,1534]" italics="true" pageId="36" pageNumber="37">Head lobe</emphasis>
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: squared, dorsal angle more acute, lower angle lobe more rounded.
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</paragraph>
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<paragraph id="8BC95473EA58D44EFF433100D13EF9F8" blockId="36.[151,1437,1472,2039]" box="[199,1114,1544,1571]" pageId="36" pageNumber="37">
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<emphasis id="B9028861EA58D44EFF433100D45EF9F8" box="[199,314,1544,1570]" italics="true" pageId="36" pageNumber="37">Antenna 1</emphasis>
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: accessory flagellum 2 articles, the second minute, setose only distally.
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</paragraph>
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<paragraph id="8BC95473EA58D44EFF433124D111F9B0" blockId="36.[151,1437,1472,2039]" pageId="36" pageNumber="37">
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<emphasis id="B9028861EA58D44EFF433124D45CF99C" box="[199,312,1580,1606]" italics="true" pageId="36" pageNumber="37">Antenna 2</emphasis>
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: stouter and longer than antenna 1, setation variable, filter setae shorter and sparser in larger individuals, flagellum spination variable, first article considerably longer than following articles.
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</paragraph>
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<paragraph id="8BC95473EA58D44EFF43317CD408F968" blockId="36.[151,1437,1472,2039]" pageId="36" pageNumber="37">
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<emphasis id="B9028861EA58D44EFF43317CD457F954" box="[199,307,1652,1678]" italics="true" pageId="36" pageNumber="37">Maxilla 1</emphasis>
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: inner plate bearing a few short, fine setae; palp without setae at the base of article 1, article 2 with 1 row of facial setae.
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</paragraph>
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<paragraph id="8BC95473EA58D44EFF4331B4D1C9F920" blockId="36.[151,1437,1472,2039]" pageId="36" pageNumber="37">
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<emphasis id="B9028861EA58D44EFF4331B4D43FF90C" box="[199,347,1724,1750]" italics="true" pageId="36" pageNumber="37">Gnathopod 1</emphasis>
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: coxa rectangular; carpus, anterior margin length <propodus length; propodus, palm defined by 1–2 medial defining spines, this central or slightly proximal of centre; dactyl facially striated.
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</paragraph>
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<paragraph id="8BC95473EA58D44EFF43300CD5B2F808" blockId="36.[151,1437,1472,2039]" pageId="36" pageNumber="37">
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<emphasis id="B9028861EA58D44EFF43300CD43DF8C4" box="[199,345,1796,1822]" italics="true" pageId="36" pageNumber="37">Gnathopod 2</emphasis>
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: without a gill; coxa not deeper posteriorly; basis without filter setae; carpus a quarter of propodus length or less, lobe apically setose; propodus without anteroproximal setae, hinge tooth rectangular cuboid or conical, shallowly or deeply bifid, or multiply incised, palm concave to the single medial defining spine, there produced or not into a short “hook” or long thumb; dactyl shorter than the propodus, variably expanded at the hinge tooth, tip apposing the defining spine, or if thumb present, its posterior margin, cusps reduced and interspersed with short setae.
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</paragraph>
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<paragraph id="8BC95473EA58D44FFF4330D4D4F9FF0F" blockId="36.[151,1437,1472,2039]" lastBlockId="37.[151,1437,151,1617]" lastPageId="37" lastPageNumber="38" pageId="36" pageNumber="37">
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<emphasis id="B9028861EA58D44EFF4330D4D42DF82C" box="[199,329,2012,2038]" italics="true" pageId="36" pageNumber="37">Pereopod 3</emphasis>
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: coxa deepest centrally or slightly posterior of centre; basis a little slenderer in larger individuals; merus, anterior margin bearing well-spaced single or clustered setae; carpus, overlap by merus variable; propodus not posteriorly spinose.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF4337D7D762FEBF" blockId="37.[151,1437,151,1617]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF4337D7D416FF23" box="[199,370,223,249]" italics="true" pageId="37" pageNumber="38">Pereopods 5–7</emphasis>
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: basis variably posterodistally produced or not produced, anterior margin spinose or setose; merus not posterodistally spinose; carpus with a cluster of spines posterodistally at least on pereopod 5; propodus not strongly expanded anteriorly; dactyl not facially serrated, posterior (outer) margin not cusped distally, anterior (inner) margin, setation variable.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF433667D10AFE53" blockId="37.[151,1437,151,1617]" box="[199,1134,367,393]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF433667D44BFE53" box="[199,303,367,393]" italics="true" pageId="37" pageNumber="38">Pleopods</emphasis>
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: rami very short, length ± depth of the pleon, each with 2 coupling hooks.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF43369BD662FE77" blockId="37.[151,1437,151,1617]" box="[199,774,403,429]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF43369BD449FE76" box="[199,301,403,428]" italics="true" pageId="37" pageNumber="38">Urosome</emphasis>
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: segment 1 with dorsal pair of erect setae.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF4336BFD1ADFDE7" blockId="37.[151,1437,151,1617]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF4336BFD456FE0B" box="[199,306,439,465]" italics="true" pageId="37" pageNumber="38">Uropod 3</emphasis>
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: peduncle mid-ventrally setose, without mid-dorsal spines, but with a crown of spines dorsomedially at the insertion of the rami and a cluster of setae distolaterally; outer ramus not setose mid-dorsally, tipped by a basally immersed, dorsally recurved spine and associated seta and serrations, cusps variable, but never as on
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<taxonomicName id="4C762FF0EA59D44FFAD236F7D0F0FDC2" baseAuthorityName="Conlan" baseAuthorityYear="1989" box="[1366,1428,511,536]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="genus">
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<emphasis id="B9028861EA59D44FFAD236F7D0F0FDC2" box="[1366,1428,511,536]" italics="true" pageId="37" pageNumber="38">Jassa</emphasis>
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</taxonomicName>
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; inner ramus with or without a spine or spines mid-dorsally in addition to the single apical spine.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF43354FD4E2FD5F" blockId="37.[151,1437,151,1617]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF43354FD46BFDBB" box="[199,271,583,609]" italics="true" pageId="37" pageNumber="38">Telson</emphasis>
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: each dorsolateral corner with a pair of cusps accompanied by setae (2 long, simple, and 2 short, plumose) but not spines.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF433586D5B0FD17" blockId="37.[151,1437,151,1617]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF433586D77DFD72" bold="true" box="[199,537,654,681]" pageId="37" pageNumber="38">Description of adult female.</emphasis>
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Maximum body length
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<quantity id="4C8EF996EA59D44FFCB53587D6EDFD73" box="[817,905,655,681]" metricMagnitude="-3" metricUnit="m" metricValue="9.8" pageId="37" pageNumber="38" unit="mm" value="9.8">9.8 mm</quantity>
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. Character states as in the male except as follows.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF4335DFD15FFD2B" blockId="37.[151,1437,151,1617]" box="[199,1083,727,753]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF4335DFD432FD2B" box="[199,342,727,753]" italics="true" pageId="37" pageNumber="38">Brood plates</emphasis>
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: broad, setae well separated, abundant, at least some hook-tipped.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF4335F3D12EFCCF" blockId="37.[151,1437,151,1617]" box="[199,1098,763,789]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF4335F3D45EFCCF" box="[199,314,763,789]" italics="true" pageId="37" pageNumber="38">Antenna 2</emphasis>
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: peduncle, posterior filter setae long, not shorter in larger individuals.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF433417D580FC5B" blockId="37.[151,1437,151,1617]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF433417D43FFCE3" box="[199,347,799,825]" italics="true" pageId="37" pageNumber="38">Gnathopod 2</emphasis>
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: propodus much larger and different in shape from propodus of gnathopod 1, palm concave, defined by a single medial spine and without a thumb; dactyl tip apposing the defining angle and spine, dactyl cusps strong.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF433483D642FC7F" blockId="37.[151,1437,151,1617]" box="[199,806,907,933]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF433483D42CFC7F" box="[199,328,907,933]" italics="true" pageId="37" pageNumber="38">Pereopod 3</emphasis>
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: basis somewhat broader than in the male.
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</paragraph>
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<paragraph id="8BC95473EA59D44FFF4334A6D4C8FBEF" blockId="37.[151,1437,151,1617]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF4334A6D45BFC12" bold="true" box="[199,319,942,968]" pageId="37" pageNumber="38">Variation.</emphasis>
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Antenna 2 peduncular setal change appears to be similar to that of
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<taxonomicName id="4C762FF0EA59D44FFBA634A7D104FC12" baseAuthorityName="Conlan" baseAuthorityYear="1989" box="[1058,1120,943,968]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="genus">
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<emphasis id="B9028861EA59D44FFBA634A7D104FC12" box="[1058,1120,943,968]" italics="true" pageId="37" pageNumber="38">Jassa</emphasis>
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</taxonomicName>
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, with the male’s setae shorter in larger specimens and the female’s remaining long. Male gnathopod 2 thumbing is not homologous, however, because the thumb develops at the palmar defining spine rather than distal to it. Consequently the thumb’s setation pattern is quite different.
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</paragraph>
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</subSubSection>
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<subSubSection id="C36C07F8EA59D44FFF433337D7ACFB83" box="[199,712,1086,1113]" pageId="37" pageNumber="38" type="type_taxon">
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<paragraph id="8BC95473EA59D44FFF433337D7ACFB83" blockId="37.[151,1437,151,1617]" box="[199,712,1086,1113]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF433337D406FB82" bold="true" box="[199,354,1086,1113]" pageId="37" pageNumber="38">
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<typeStatus id="54CDEAD1EA59D44FFF433337D466FB83" box="[199,258,1087,1113]" pageId="37" pageNumber="38">Type</typeStatus>
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species.
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</emphasis>
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<taxonomicName id="4C762FF0EA59D44FFEED3337D7A0FB83" ID-CoL="854QB" authority="Chevreux, 1906" authorityName="Chevreux" authorityYear="1906" box="[361,708,1087,1113]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="wandeli">
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<emphasis id="B9028861EA59D44FFEED3337D763FB83" box="[361,519,1087,1113]" italics="true" pageId="37" pageNumber="38">Jassa wandeli</emphasis>
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<bibRefCitation id="EFE72982EA59D44FFD8A3337D7A0FB83" author="Chevreux, E." box="[526,708,1087,1113]" pageId="37" pageNumber="38" pagination="1 - 100" refId="ref38465" refString="Chevreux, E. (1906) Crustaces Amphipodes. In: Expedition Antarctique Francaise (1903 - 1905) commandee par le Dr. Jean Charcot. Sciences naturelles: documents scientifiques. Masson et Cie, Paris, pp. 1 - 100." type="book chapter" year="1906">Chevreux, 1906</bibRefCitation>
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</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="C36C07F8EA59D44FFF43336BD727FB7B" pageId="37" pageNumber="38" type="reference_group">
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<paragraph id="8BC95473EA59D44FFF43336BD727FB7B" blockId="37.[151,1437,151,1617]" pageId="37" pageNumber="38">
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<emphasis id="B9028861EA59D44FFF43336BD4F5FBA6" bold="true" box="[199,401,1122,1149]" pageId="37" pageNumber="38">Included species.</emphasis>
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<taxonomicName id="4C762FF0EA59D44FFE1C336BD657FBA4" ID-CoL="8589R" authority="(Chevreux, 1906)" authorityName="Conlan" authorityYear="2021" baseAuthorityName="Chevreux" baseAuthorityYear="1906" box="[408,819,1123,1150]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="wandeli">
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<emphasis id="B9028861EA59D44FFE1C336BD701FBA7" box="[408,613,1123,1149]" italics="true" pageId="37" pageNumber="38">Pleojassa wandeli</emphasis>
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(
|
||
<bibRefCitation id="EFE72982EA59D44FFDF7336BD64FFBA4" author="Chevreux, E." box="[627,811,1123,1150]" pageId="37" pageNumber="38" pagination="1 - 100" refId="ref38465" refString="Chevreux, E. (1906) Crustaces Amphipodes. In: Expedition Antarctique Francaise (1903 - 1905) commandee par le Dr. Jean Charcot. Sciences naturelles: documents scientifiques. Masson et Cie, Paris, pp. 1 - 100." type="book chapter" year="1906">Chevreux, 1906</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C762FF0EA59D44FFCBA336BD1BEFBA7" ID-CoL="854Q7" authority="(Schellenberg, 1931)" baseAuthorityName="Schellenberg" baseAuthorityYear="1931" box="[830,1242,1123,1149]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="multidentata">
|
||
<emphasis id="B9028861EA59D44FFCBA336BD68CFBA7" box="[830,1000,1123,1149]" italics="true" pageId="37" pageNumber="38">P. multidentata</emphasis>
|
||
(
|
||
<bibRefCitation id="EFE72982EA59D44FFC72336BD1B6FBA7" author="Schellenberg, A." box="[1014,1234,1123,1149]" pageId="37" pageNumber="38" pagination="1 - 290" refId="ref41976" refString="Schellenberg, A. (1931) Gammariden und Caprelliden des Magellangebietes, Sudgeorgiens und der Westantarktis. Further Zoological Results of the Swedish Antarctic Expedition 1901 - 1903, 2 (6), 1 - 290." type="journal article" year="1931">Schellenberg, 1931</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C762FF0EA59D44FFB62336BD02BFBA6" ID-CoL="8589M" authority="Conlan, 2021" authorityName="Conlan" authorityYear="2021" box="[1254,1359,1123,1148]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="moorei" status="sp. nov.">
|
||
<emphasis id="B9028861EA59D44FFB62336BD02BFBA6" box="[1254,1359,1123,1148]" italics="true" pageId="37" pageNumber="38">P. moorei</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B9028861EA59D44FFAD2336BD0F8FBA7" bold="true" box="[1366,1436,1123,1149]" pageId="37" pageNumber="38">
|
||
<taxonomicNameLabel id="A231351AEA59D44FFAD2336BD0F2FBA7" box="[1366,1430,1123,1149]" pageId="37" pageNumber="38" rank="species">n. sp.</taxonomicNameLabel>
|
||
,
|
||
</emphasis>
|
||
<taxonomicName id="4C762FF0EA59D44FFF13338FD59FFB7B" ID-CoL="8589L" authority="Conlan, 2021" authorityName="Conlan" authorityYear="2021" box="[151,251,1159,1185]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="lowryi" status="sp. nov.">
|
||
<emphasis id="B9028861EA59D44FFF13338FD59FFB7B" box="[151,251,1159,1185]" italics="true" pageId="37" pageNumber="38">P. lowryi</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B9028861EA59D44FFE85338FD424FB7B" bold="true" box="[257,320,1159,1185]" pageId="37" pageNumber="38">
|
||
<taxonomicNameLabel id="A231351AEA59D44FFE85338FD424FB7B" box="[257,320,1159,1185]" pageId="37" pageNumber="38" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
and
|
||
<taxonomicName id="4C762FF0EA59D44FFEF3338FD499FB7B" ID-CoL="8589P" authority="Conlan, 2021" authorityName="Conlan" authorityYear="2021" box="[375,509,1159,1185]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="orientalis" status="sp. nov.">
|
||
<emphasis id="B9028861EA59D44FFEF3338FD499FB7B" box="[375,509,1159,1185]" italics="true" pageId="37" pageNumber="38">P. orientalis</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B9028861EA59D44FFD81338FD727FB7B" bold="true" box="[517,579,1159,1185]" pageId="37" pageNumber="38">
|
||
<taxonomicNameLabel id="A231351AEA59D44FFD81338FD727FB7B" box="[517,579,1159,1185]" pageId="37" pageNumber="38" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C36C07F8EA59D44FFF4333A3D6CCF98B" pageId="37" pageNumber="38" type="discussion">
|
||
<paragraph id="8BC95473EA59D44FFF4333A3D1A7FAD7" blockId="37.[151,1437,151,1617]" pageId="37" pageNumber="38">
|
||
<emphasis id="B9028861EA59D44FFF4333A3D45FFB1F" bold="true" box="[199,315,1195,1221]" pageId="37" pageNumber="38">Remarks.</emphasis>
|
||
Distinguishing features from
|
||
<taxonomicName id="4C762FF0EA59D44FFD0B33A3D7A9FB1E" baseAuthorityName="Conlan" baseAuthorityYear="1989" box="[655,717,1195,1220]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B9028861EA59D44FFD0B33A3D7A9FB1E" box="[655,717,1195,1220]" italics="true" pageId="37" pageNumber="38">Jassa</emphasis>
|
||
</taxonomicName>
|
||
are a single spine defining the palm of gnathopod 2, and hence different thumb setation, closure of the second gnathopod’s dactyl at, rather than distal to, the defining spine, lack of a gnathopod 2 gill, reduced pleopods and lack of a double cusp on the uropod 3 outer ramus.
|
||
</paragraph>
|
||
<paragraph id="8BC95473EA59D44FFF43321FD6CCF98B" blockId="37.[151,1437,151,1617]" pageId="37" pageNumber="38">
|
||
The males of
|
||
<taxonomicName id="4C762FF0EA59D44FFEE0321FD4BDFAEB" authorityName="Conlan" authorityYear="2021" baseAuthorityName="Chevreux" baseAuthorityYear="1906" box="[356,473,1303,1329]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="wandeli">
|
||
<emphasis id="B9028861EA59D44FFEE0321FD4BDFAEB" box="[356,473,1303,1329]" italics="true" pageId="37" pageNumber="38">P. wandeli</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C762FF0EA59D44FFD96321FD7D8FAEB" baseAuthorityName="Schellenberg" baseAuthorityYear="1931" box="[530,700,1303,1329]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="multidentata">
|
||
<emphasis id="B9028861EA59D44FFD96321FD7D8FAEB" box="[530,700,1303,1329]" italics="true" pageId="37" pageNumber="38">P. multidentata</emphasis>
|
||
</taxonomicName>
|
||
produce a long thumb if sufficiently larger than the adult female and thus would superficially appear to be a
|
||
<taxonomicName id="4C762FF0EA59D44FFDF83233D7DEFA8E" baseAuthorityName="Conlan" baseAuthorityYear="1989" box="[636,698,1339,1364]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B9028861EA59D44FFDF83233D7DEFA8E" box="[636,698,1339,1364]" italics="true" pageId="37" pageNumber="38">Jassa</emphasis>
|
||
</taxonomicName>
|
||
. Thumb development appears from specimens to be a progressive transformation, not at a terminal molt, however (although this has not been tested experimentally as it has for
|
||
<taxonomicName id="4C762FF0EA59D44FFACA3257D0E8FAA2" baseAuthorityName="Conlan" baseAuthorityYear="1989" box="[1358,1420,1375,1400]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B9028861EA59D44FFACA3257D0E8FAA2" box="[1358,1420,1375,1400]" italics="true" pageId="37" pageNumber="38">Jassa</emphasis>
|
||
</taxonomicName>
|
||
). Males of
|
||
<taxonomicName id="4C762FF0EA59D44FFE80328BD4EFFA47" authorityName="Conlan" authorityYear="2021" box="[260,395,1411,1437]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="orientalis">
|
||
<emphasis id="B9028861EA59D44FFE80328BD4EFFA47" box="[260,395,1411,1437]" italics="true" pageId="37" pageNumber="38">P. orientalis</emphasis>
|
||
</taxonomicName>
|
||
probably also produce a thumb as this species closely resembles
|
||
<taxonomicName id="4C762FF0EA59D44FFBF2328BD044FA47" baseAuthorityName="Schellenberg" baseAuthorityYear="1931" box="[1142,1312,1411,1437]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="multidentata">
|
||
<emphasis id="B9028861EA59D44FFBF2328BD044FA47" box="[1142,1312,1411,1437]" italics="true" pageId="37" pageNumber="38">P. multidentata</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
<taxonomicName id="4C762FF0EA59D44FFAAB328BD581FA1A" authorityName="Conlan" authorityYear="2021" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="moorei">
|
||
<emphasis id="B9028861EA59D44FFAAB328BD581FA1A" italics="true" pageId="37" pageNumber="38">Pleojassa moorei</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C762FF0EA59D44FFE9F32AFD41BFA1B" authorityName="Conlan" authorityYear="2021" box="[283,383,1447,1473]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="lowryi">
|
||
<emphasis id="B9028861EA59D44FFE9F32AFD41BFA1B" box="[283,383,1447,1473]" italics="true" pageId="37" pageNumber="38">P. lowryi</emphasis>
|
||
</taxonomicName>
|
||
are not known to produce thumbs in the males and sufficient specimens were available to find males of similar or larger size than adult females to indicate that the males were adult as well. However, the five species resemble each other in characters that are conservative within
|
||
<taxonomicName id="4C762FF0EA59D44FFC0C32E7D6A2F9D2" baseAuthorityName="Conlan" baseAuthorityYear="1989" box="[904,966,1519,1544]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B9028861EA59D44FFC0C32E7D6A2F9D2" box="[904,966,1519,1544]" italics="true" pageId="37" pageNumber="38">Jassa</emphasis>
|
||
</taxonomicName>
|
||
, such as the tendency toward setal reduction in the antenna 2 of the male compared to the female, and in similar morphologies of the mouthparts, gnathopod 1, female gnathopod 2, female brood plates and third uropod hooking.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C36C07F8EA59D44FFF1331ABD7B6F966" box="[151,722,1698,1725]" pageId="37" pageNumber="38" type="multiple">
|
||
<paragraph id="8BC95473EA59D44FFF1331ABD7B6F966" blockId="37.[151,722,1698,1725]" box="[151,722,1698,1725]" pageId="37" pageNumber="38">
|
||
<emphasis id="B9028861EA59D44FFF1331ABD7B6F966" bold="true" box="[151,722,1698,1725]" pageId="37" pageNumber="38">
|
||
Key to World species of
|
||
<taxonomicName id="4C762FF0EA59D44FFE4131AAD753F967" authorityName="Conlan" authorityYear="2021" box="[453,567,1698,1725]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B9028861EA59D44FFE4131AAD753F967" bold="true" box="[453,567,1698,1725]" italics="true" pageId="37" pageNumber="38">Pleojassa</emphasis>
|
||
</taxonomicName>
|
||
(both sexes)
|
||
</emphasis>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C36C07F8EA59D44CFF1331E0D0F8FE08" lastPageId="38" lastPageNumber="39" pageId="37" pageNumber="38" type="key">
|
||
<key id="FFE70342EA59D44CFF1331E0D0F8FE08" lastPageId="38" lastPageNumber="39" pageId="37" pageNumber="38">
|
||
<keyStep id="30824CD6EA59D44FFF1331E0D0F8F855" pageId="37" pageNumber="38">
|
||
<paragraph id="8BC95473EA59D44FFF1331E0D0F9F8ED" blockId="37.[151,1437,1768,2024]" pageId="37" pageNumber="38">
|
||
<keyLead id="3087F746EA59D44FFF1331E0D0F9F8ED" pageId="37" pageNumber="38">
|
||
1 Uropod 1, posteroventral peduncular spinous process nearly as long as the outer ramus. Gnathopod 1, carpus without a seta at the anterodistal junction of the propodus. Female gnathopod 2, palmar setae not densely plumose (
|
||
<figureCitation id="134D48F6EA59D44FFB17300DD1BDF8C1" box="[1171,1241,1797,1819]" captionStart="FIGURE 22" captionStartId="39.[151,249,1823,1847]" captionTargetBox="[165,1424,184,1797]" captionTargetId="figure-15@39.[163,1424,181,1799]" captionTargetPageId="39" captionText="FIGURE 22. Pleojassa moorei n. sp. Holotype, male 1, 4.0 mm (NHM 1987:511), allotype, female 1 (NHM 1987:512), 4.25 mm and paratype, male 2, 3.25 mm. Billie Rocks, Signy Island, South Orkney Islands, 4 March 1965, M. H. Thurston, coll., NHM 1969:768:ca. 430, station no. 13(244). Male 3, 3.4 mm, male 4, 3.6 mm, male 5, 3.4 mm, and female 2, 4.2 mm, Billie Rocks, Signy Island, South Orkney Islands, 3 March 1965, M. H. Thurston, coll., CMN IZ1989-013, 1969:771:ca 260 (pt.), station no. 16(333). Most setae are omitted from the gnathopod 2 profiles. Lateral views: whole body, male 3 antenna 1, uropod 3 and gnathopod 2 profiles; dorsal view: uropod 1 and telson; medial views: male 5 antenna 1 and female 2 gnathopod 2. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496065" httpUri="https://zenodo.org/record/4496065/files/figure.png" pageId="37" pageNumber="38">Fig. 22</figureCitation>
|
||
).......................................................................................................
|
||
<taxonomicName id="4C762FF0EA59D44FFA88302BD002F8E2" ID-CoL="8589M" authority="Conlan, 2021" authorityName="Conlan" authorityYear="2021" box="[1292,1382,1827,1848]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="moorei" status="sp. nov.">
|
||
<emphasis id="B9028861EA59D44FFA88302BD002F8E2" box="[1292,1382,1827,1848]" italics="true" pageId="37" pageNumber="38">P. moorei</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B9028861EA59D44FFAE8302AD0F9F8ED" bold="true" box="[1388,1437,1826,1847]" pageId="37" pageNumber="38">
|
||
<taxonomicNameLabel id="A231351AEA59D44FFAE8302AD0F9F8ED" box="[1388,1437,1826,1847]" pageId="37" pageNumber="38" rank="species">n.sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
</keyLead>
|
||
</paragraph>
|
||
<paragraph id="8BC95473EA59D44FFF133048D0F8F855" blockId="37.[151,1437,1768,2024]" pageId="37" pageNumber="38">
|
||
<keyLead id="3087F746EA59D44FFF133048D0F8F855" pageId="37" pageNumber="38">
|
||
- Uropod 1, posteroventral peduncular spinous process ½ to ¾ the length of the outer ramus. Gnathopod 1, carpus with or without a single seta or cluster of setae at the anterodistal junction of the propodus. Female gnathopod 2, palm bearing abundant plumose setae (
|
||
<figureCitation id="134D48F6EA59D44FFEF23072D4DBF855" box="[374,447,1914,1936]" captionStart="FIGURE 27" captionStartId="46.[151,249,1186,1210]" captionTargetBox="[167,1413,187,1157]" captionTargetId="figure-27@46.[164,1423,181,1162]" captionTargetPageId="46" captionText="FIGURE 27. Pleojassa multidentata (Schellenberg, 1931). Male, 8.0 mm and male 1, 7.4 mm. South Georgia, Swedish Antarctic Expedition (1901–1903), collection date and collector unknown, MfN 22.962. Male 2, paralectotype, 3.7 mm and adult female, lectotype, 7.7 mm. South Georgia, 1883, Deutsche Polar Commission, K. von den Steinen, coll., ZMH K-8028. Setae are omitted from the gnathopod 2 profiles of the male 1 and male 2. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496077" httpUri="https://zenodo.org/record/4496077/files/figure.png" pageId="37" pageNumber="38">Figs 27</figureCitation>
|
||
and
|
||
<figureCitation id="134D48F6EA59D44FFE693072D762F84A" box="[493,518,1914,1936]" captionStart="FIGURE 28" captionStartId="48.[151,249,996,1020]" captionTargetBox="[151,1426,187,972]" captionTargetId="figure-27@48.[151,1436,181,972]" captionTargetPageId="48" captionText="FIGURE 28. Pleojassa orientalis n. sp. Holotype, adult female, 9.8 mm and male, paratype, ~6.5 mm (full length estimated from comparison with the female as body posterior to segment 4 missing). Southeast corner of Gorilla Head Rock, Macquarie Island, Australia (54°29ʹS, 158°58ʹE), 23 December 1977, J. K. Lowry, coll., AM P.34955, station no. MA-147. Setae are omitted from the male gnathopod 2 profile. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496079" httpUri="https://zenodo.org/record/4496079/files/figure.png" pageId="37" pageNumber="38">28</figureCitation>
|
||
).......................................................................... 2
|
||
</keyLead>
|
||
</paragraph>
|
||
</keyStep>
|
||
<keyStep id="30824CD6EA59D44CFF133090D0F8FF3D" lastPageId="38" lastPageNumber="39" pageId="37" pageNumber="38">
|
||
<paragraph id="8BC95473EA59D44FFF133090D0F9F83D" blockId="37.[151,1437,1768,2024]" pageId="37" pageNumber="38">
|
||
<keyLead id="3087F746EA59D44FFF133090D0F9F83D" pageId="37" pageNumber="38">
|
||
2 Pereopods 3 and 4, carpus nearly fully overlapped by the merus (
|
||
<figureCitation id="134D48F6EA59D44FFCC23090D6E9F877" box="[838,909,1943,1966]" captionStart="FIGURE 25" captionStartId="44.[151,249,1911,1935]" captionTargetBox="[162,1435,861,1884]" captionTargetId="figure-310@44.[151,1436,849,1888]" captionTargetPageId="44" captionText="FIGURE 25. Pleojassa lowryi n. sp. Holotype, male, 5.3 mm, allotype, female, 4.6 mm and paratypes, male 1, 2.9 mm and male 2, 4.3 mm. Rima Islet, The Snares, New Zealand, 21 November 1976, G. D. Fenwick, coll., AM P.34948, station no. SA-3417. Setae are omitted from the second gnathopod profiles. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496073" httpUri="https://zenodo.org/record/4496073/files/figure.png" pageId="37" pageNumber="38">Fig. 25</figureCitation>
|
||
). Female body size at maturity
|
||
<quantity id="4C8EF996EA59D44FFB30309FD042F877" box="[1204,1318,1943,1965]" metricMagnitude="-3" metricUnit="m" metricValue="3.8" metricValueMax="5.1" metricValueMin="2.5" pageId="37" pageNumber="38" unit="mm" value="3.8" valueMax="5.1" valueMin="2.5">2.5–5.1 mm</quantity>
|
||
. Gnathopod 2, propodus, palm densely plumose in both sexes; larger male ~
|
||
<quantity id="4C8EF996EA59D44FFCCE30BDD6E5F810" box="[842,897,1973,1994]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="37" pageNumber="38" unit="mm" value="3.0">3 mm</quantity>
|
||
body length or more, palm defined by a small hook but not by a thumb (
|
||
<figureCitation id="134D48F6EA59D44FFE0430DAD4A2F832" box="[384,454,2002,2024]" captionStart="FIGURE 25" captionStartId="44.[151,249,1911,1935]" captionTargetBox="[162,1435,861,1884]" captionTargetId="figure-310@44.[151,1436,849,1888]" captionTargetPageId="44" captionText="FIGURE 25. Pleojassa lowryi n. sp. Holotype, male, 5.3 mm, allotype, female, 4.6 mm and paratypes, male 1, 2.9 mm and male 2, 4.3 mm. Rima Islet, The Snares, New Zealand, 21 November 1976, G. D. Fenwick, coll., AM P.34948, station no. SA-3417. Setae are omitted from the second gnathopod profiles. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496073" httpUri="https://zenodo.org/record/4496073/files/figure.png" pageId="37" pageNumber="38">Fig. 25</figureCitation>
|
||
).....................................................................
|
||
<taxonomicName id="4C762FF0EA59D44FFA9530DBD002F83D" ID-CoL="8589L" authority="Conlan, 2021" authorityName="Conlan" authorityYear="2021" box="[1297,1382,2002,2024]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="37" pageNumber="38" phylum="Arthropoda" rank="species" species="lowryi" status="sp. nov.">
|
||
<emphasis id="B9028861EA59D44FFA9530DBD002F83D" box="[1297,1382,2002,2024]" italics="true" pageId="37" pageNumber="38">P. lowryi</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B9028861EA59D44FFAE830DAD0F9F83D" bold="true" box="[1388,1437,2002,2023]" pageId="37" pageNumber="38">
|
||
<taxonomicNameLabel id="A231351AEA59D44FFAE830DAD0F9F83D" box="[1388,1437,2002,2023]" pageId="37" pageNumber="38" rank="species">n.sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
</keyLead>
|
||
</paragraph>
|
||
<paragraph id="8BC95473EA5AD44CFF133790D0F8FF3D" blockId="38.[151,1437,151,467]" pageId="38" pageNumber="39">
|
||
<keyLead id="3087F746EA5AD44CFF133790D0F8FF3D" pageId="38" pageNumber="39">
|
||
- Pereopods 3 and 4, carpus 1/2 to 3/4 overlapped by the merus (
|
||
<figureCitation id="134D48F6EA5AD44CFCCF379FD6DDFF74" box="[843,953,151,174]" captionStart-0="FIGURE 27" captionStart-1="FIGURE 28" captionStart-2="FIGURE 29" captionStartId-0="46.[151,249,1186,1210]" captionStartId-1="48.[151,249,996,1020]" captionStartId-2="49.[151,249,1922,1946]" captionTargetBox-0="[167,1413,187,1157]" captionTargetBox-1="[151,1426,187,972]" captionTargetBox-2="[155,1427,774,1890]" captionTargetId-0="figure-27@46.[164,1423,181,1162]" captionTargetId-1="figure-27@48.[151,1436,181,972]" captionTargetId-2="figure-209@49.[151,1436,766,1898]" captionTargetPageId-0="46" captionTargetPageId-1="48" captionTargetPageId-2="49" captionText-0="FIGURE 27. Pleojassa multidentata (Schellenberg, 1931). Male, 8.0 mm and male 1, 7.4 mm. South Georgia, Swedish Antarctic Expedition (1901–1903), collection date and collector unknown, MfN 22.962. Male 2, paralectotype, 3.7 mm and adult female, lectotype, 7.7 mm. South Georgia, 1883, Deutsche Polar Commission, K. von den Steinen, coll., ZMH K-8028. Setae are omitted from the gnathopod 2 profiles of the male 1 and male 2. All views lateral. Scale 0.1 mm." captionText-1="FIGURE 28. Pleojassa orientalis n. sp. Holotype, adult female, 9.8 mm and male, paratype, ~6.5 mm (full length estimated from comparison with the female as body posterior to segment 4 missing). Southeast corner of Gorilla Head Rock, Macquarie Island, Australia (54°29ʹS, 158°58ʹE), 23 December 1977, J. K. Lowry, coll., AM P.34955, station no. MA-147. Setae are omitted from the male gnathopod 2 profile. All views lateral. Scale 0.1 mm." captionText-2="FIGURE 29. Pleojassa wandeli (Chevreux, 1906). Lectotype, male, 6.0 mm. Ile Booth-Wandel, Antarctica, 10 December 1904, Expédition Antarctique Française (1903–1905), MNHN Am. 2630(1). Lateral view: whole body; dorsal view: telson; other views medial. Scale 0.1 mm." figureDoi-0="http://doi.org/10.5281/zenodo.4496077" figureDoi-1="http://doi.org/10.5281/zenodo.4496079" figureDoi-2="http://doi.org/10.5281/zenodo.4496081" httpUri-0="https://zenodo.org/record/4496077/files/figure.png" httpUri-1="https://zenodo.org/record/4496079/files/figure.png" httpUri-2="https://zenodo.org/record/4496081/files/figure.png" pageId="38" pageNumber="39">Figs 27–29</figureCitation>
|
||
). Female body size at maturity
|
||
<quantity id="4C8EF996EA5AD44CFB68379FD03BFF77" box="[1260,1375,151,173]" metricMagnitude="-3" metricUnit="m" metricValue="7.85" metricValueMax="9.8" metricValueMin="5.9" pageId="38" pageNumber="39" unit="mm" value="7.85" valueMax="9.8" valueMin="5.9">5.9–9.8 mm</quantity>
|
||
. Gnathopod 2, propodus, only the female palm densely plumose; larger male ~
|
||
<quantity id="4C8EF996EA5AD44CFC2637BDD6BDFF10" box="[930,985,181,203]" metricMagnitude="-3" metricUnit="m" metricValue="6.0" pageId="38" pageNumber="39" unit="mm" value="6.0">6 mm</quantity>
|
||
body length or more, palm defined by a thumb (
|
||
<figureCitation id="134D48F6EA5AD44CFF6D37DAD44BFF32" box="[233,303,210,232]" captionStart="FIGURE 30" captionStartId="50.[151,249,1794,1818]" captionTargetBox="[171,1412,190,1757]" captionTargetId="figure-27@50.[163,1425,181,1770]" captionTargetPageId="50" captionText="FIGURE 30. Pleojassa wandeli (Chevreux, 1906). Variation in the male gnathopod 2 propodus and dactyl, with the palmar defining spine as a landmark. Note the internal thumbed cuticle in males 3 and 4. Male 1, 9.8 mm and male 3, 6.3 mm, Billie Rocks, Signy Island, South Orkney Islands, 5 March 1965, M. H. Thurston, coll., NHM 1969:735:39, station no. 10(95). Male 2, 4.0 mm, Berntsen Point, Signy Island, South Orkney Islands, 21 April 1964, M. H. Thurston, coll., NHM 1969:752:15, station no. 33 (1427) pt. Male 4, 9.3 mm, Ile Petermann, 565, Pourquoi pas? Antarctica 1908–1910, 2e Miss. Charcot 1912, 16 Nov. 1909, MNHN Am. 2627. Male 5, 6.6 mm, Kerguelen Island, Antarctica (49.30°S, 69.30°E), 13 Feb. 1966, D. Bellan-Santini loan. Lateral views: males 2, 4 and 5 (setae omitted); medial views: males 1 and 3. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496083" httpUri="https://zenodo.org/record/4496083/files/figure.png" pageId="38" pageNumber="39">Fig. 30</figureCitation>
|
||
)............................................................................................ 3
|
||
</keyLead>
|
||
</paragraph>
|
||
</keyStep>
|
||
<keyStep id="30824CD6EA5AD44CFF1337F8D0F8FE87" pageId="38" pageNumber="39">
|
||
<paragraph id="8BC95473EA5AD44CFF1337F8D0F8FEF9" blockId="38.[151,1437,151,467]" pageId="38" pageNumber="39">
|
||
<keyLead id="3087F746EA5AD44CFF1337F8D0F8FEF9" pageId="38" pageNumber="39">
|
||
<specimenCount id="9D709FFAEA5AD44CFF1337F8D44DFEDF" box="[151,297,239,261]" pageId="38" pageNumber="39" type="female">3 Female</specimenCount>
|
||
gnathopod 2, propodus, dactylar hinge tooth shallow (
|
||
<figureCitation id="134D48F6EA5AD44CFCBC37E7D6E5FEDC" box="[824,897,239,262]" captionStart="FIGURE 33" captionStartId="53.[151,250,1859,1883]" captionTargetBox="[155,1429,186,1828]" captionTargetId="figure-15@53.[151,1436,181,1835]" captionTargetPageId="53" captionText="FIGURE 33. Pleojassa wandeli (Chevreux, 1906). Male 1, 9.8 mm and female, 9.6 mm, Billie Rocks, Signy Island, South Orkney Islands, 5 March 1965, M. H. Thurston, coll., NHM 1969:735:39, station no. 10(95). All views medial. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496089" httpUri="https://zenodo.org/record/4496089/files/figure.png" pageId="38" pageNumber="39">Fig. 33</figureCitation>
|
||
). Antenna 2, large male and female, posterior margin of article 5 and flagellum plumose (
|
||
<figureCitation id="134D48F6EA5AD44CFD9B3605D701FEF9" box="[543,613,269,291]" captionStart="FIGURE 33" captionStartId="53.[151,250,1859,1883]" captionTargetBox="[155,1429,186,1828]" captionTargetId="figure-15@53.[151,1436,181,1835]" captionTargetPageId="53" captionText="FIGURE 33. Pleojassa wandeli (Chevreux, 1906). Male 1, 9.8 mm and female, 9.6 mm, Billie Rocks, Signy Island, South Orkney Islands, 5 March 1965, M. H. Thurston, coll., NHM 1969:735:39, station no. 10(95). All views medial. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496089" httpUri="https://zenodo.org/record/4496089/files/figure.png" pageId="38" pageNumber="39">Fig. 33</figureCitation>
|
||
)............................................
|
||
<taxonomicName id="4C762FF0EA5AD44CFB0D3605D0F8FEF9" ID-CoL="8589R" authority="(Chevreux, 1906)" authorityName="Conlan" authorityYear="2021" baseAuthorityName="Chevreux" baseAuthorityYear="1906" box="[1161,1436,269,291]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="38" pageNumber="39" phylum="Arthropoda" rank="species" species="wandeli">
|
||
<emphasis id="B9028861EA5AD44CFB0D3605D189FEF8" box="[1161,1261,269,290]" italics="true" pageId="38" pageNumber="39">P. wandeli</emphasis>
|
||
(
|
||
<bibRefCitation id="EFE72982EA5AD44CFB7D3605D0F1FEF9" author="Chevreux, E." box="[1273,1429,269,291]" pageId="38" pageNumber="39" pagination="1 - 100" refId="ref38465" refString="Chevreux, E. (1906) Crustaces Amphipodes. In: Expedition Antarctique Francaise (1903 - 1905) commandee par le Dr. Jean Charcot. Sciences naturelles: documents scientifiques. Masson et Cie, Paris, pp. 1 - 100." type="book chapter" year="1906">Chevreux, 1906</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
</keyLead>
|
||
</paragraph>
|
||
<paragraph id="8BC95473EA5AD44CFF133623D0F8FE87" blockId="38.[151,1437,151,467]" pageId="38" pageNumber="39">
|
||
<keyLead id="3087F746EA5AD44CFF133623D0F8FE87" pageId="38" pageNumber="39">
|
||
- Female gnathopod 2, propodus, dactylar hinge tooth deep (
|
||
<figureCitation id="134D48F6EA5AD44CFC8A3622D631FEE5" box="[782,853,298,320]" captionStart="FIGURE 27" captionStartId="46.[151,249,1186,1210]" captionTargetBox="[167,1413,187,1157]" captionTargetId="figure-27@46.[164,1423,181,1162]" captionTargetPageId="46" captionText="FIGURE 27. Pleojassa multidentata (Schellenberg, 1931). Male, 8.0 mm and male 1, 7.4 mm. South Georgia, Swedish Antarctic Expedition (1901–1903), collection date and collector unknown, MfN 22.962. Male 2, paralectotype, 3.7 mm and adult female, lectotype, 7.7 mm. South Georgia, 1883, Deutsche Polar Commission, K. von den Steinen, coll., ZMH K-8028. Setae are omitted from the gnathopod 2 profiles of the male 1 and male 2. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496077" httpUri="https://zenodo.org/record/4496077/files/figure.png" pageId="38" pageNumber="39">Figs 27</figureCitation>
|
||
and
|
||
<figureCitation id="134D48F6EA5AD44CFC053622D6FEFE9A" box="[897,922,298,320]" captionStart="FIGURE 28" captionStartId="48.[151,249,996,1020]" captionTargetBox="[151,1426,187,972]" captionTargetId="figure-27@48.[151,1436,181,972]" captionTargetPageId="48" captionText="FIGURE 28. Pleojassa orientalis n. sp. Holotype, adult female, 9.8 mm and male, paratype, ~6.5 mm (full length estimated from comparison with the female as body posterior to segment 4 missing). Southeast corner of Gorilla Head Rock, Macquarie Island, Australia (54°29ʹS, 158°58ʹE), 23 December 1977, J. K. Lowry, coll., AM P.34955, station no. MA-147. Setae are omitted from the male gnathopod 2 profile. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496079" httpUri="https://zenodo.org/record/4496079/files/figure.png" pageId="38" pageNumber="39">28</figureCitation>
|
||
). Antenna 2, adult female and comparably sized male, posterior margin of article 5 and flagellum not plumose (
|
||
<figureCitation id="134D48F6EA5AD44CFC86364FD62FFE87" box="[770,843,327,349]" captionStart="FIGURE 27" captionStartId="46.[151,249,1186,1210]" captionTargetBox="[167,1413,187,1157]" captionTargetId="figure-27@46.[164,1423,181,1162]" captionTargetPageId="46" captionText="FIGURE 27. Pleojassa multidentata (Schellenberg, 1931). Male, 8.0 mm and male 1, 7.4 mm. South Georgia, Swedish Antarctic Expedition (1901–1903), collection date and collector unknown, MfN 22.962. Male 2, paralectotype, 3.7 mm and adult female, lectotype, 7.7 mm. South Georgia, 1883, Deutsche Polar Commission, K. von den Steinen, coll., ZMH K-8028. Setae are omitted from the gnathopod 2 profiles of the male 1 and male 2. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496077" httpUri="https://zenodo.org/record/4496077/files/figure.png" pageId="38" pageNumber="39">Figs 27</figureCitation>
|
||
and
|
||
<figureCitation id="134D48F6EA5AD44CFCFD3640D6F6FE84" box="[889,914,328,350]" captionStart="FIGURE 28" captionStartId="48.[151,249,996,1020]" captionTargetBox="[151,1426,187,972]" captionTargetId="figure-27@48.[151,1436,181,972]" captionTargetPageId="48" captionText="FIGURE 28. Pleojassa orientalis n. sp. Holotype, adult female, 9.8 mm and male, paratype, ~6.5 mm (full length estimated from comparison with the female as body posterior to segment 4 missing). Southeast corner of Gorilla Head Rock, Macquarie Island, Australia (54°29ʹS, 158°58ʹE), 23 December 1977, J. K. Lowry, coll., AM P.34955, station no. MA-147. Setae are omitted from the male gnathopod 2 profile. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496079" httpUri="https://zenodo.org/record/4496079/files/figure.png" pageId="38" pageNumber="39">28</figureCitation>
|
||
)......................................... 4
|
||
</keyLead>
|
||
</paragraph>
|
||
</keyStep>
|
||
<keyStep id="30824CD6EA5AD44CFF13366DD0F8FE08" pageId="38" pageNumber="39">
|
||
<paragraph id="8BC95473EA5AD44CFF13366DD0F8FE42" blockId="38.[151,1437,151,467]" pageId="38" pageNumber="39">
|
||
<keyLead id="3087F746EA5AD44CFF13366DD0F8FE42" pageId="38" pageNumber="39">
|
||
4 Gnathopod 1, carpus with a single or cluster of setae at the anterodistal junction of the propodus (
|
||
<figureCitation id="134D48F6EA5AD44CFB11366DD1BFFEA1" box="[1173,1243,357,379]" captionStart="FIGURE 27" captionStartId="46.[151,249,1186,1210]" captionTargetBox="[167,1413,187,1157]" captionTargetId="figure-27@46.[164,1423,181,1162]" captionTargetPageId="46" captionText="FIGURE 27. Pleojassa multidentata (Schellenberg, 1931). Male, 8.0 mm and male 1, 7.4 mm. South Georgia, Swedish Antarctic Expedition (1901–1903), collection date and collector unknown, MfN 22.962. Male 2, paralectotype, 3.7 mm and adult female, lectotype, 7.7 mm. South Georgia, 1883, Deutsche Polar Commission, K. von den Steinen, coll., ZMH K-8028. Setae are omitted from the gnathopod 2 profiles of the male 1 and male 2. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496077" httpUri="https://zenodo.org/record/4496077/files/figure.png" pageId="38" pageNumber="39">Fig. 27</figureCitation>
|
||
). Known only from
|
||
<collectingCountry id="F36114E3EA5AD44CFF66368AD409FE42" box="[226,365,386,408]" name="South Georgia and the South Sandwich Islands" pageId="38" pageNumber="39">South Georgia</collectingCountry>
|
||
(
|
||
<figureCitation id="134D48F6EA5AD44CFEFE368AD4D0FE42" box="[378,436,386,408]" captionStart="FIGURE 2" captionStartId="6.[151,250,1803,1827]" captionTargetBox="[151,1436,181,1779]" captionTargetId="figure-27@6.[151,1436,181,1779]" captionTargetPageId="6" captionText="FIGURE 2. Distribution records of Pleojassa moorei, P. lowryi, P. wandeli, P. multidentata, and P. orientalis. Red dot: identification confirmed by specimen examination; green triangle: literature record (Supplementary Table S1) with identification not confirmed but judged likely to be this species." figureDoi="http://doi.org/10.5281/zenodo.4496021" httpUri="https://zenodo.org/record/4496021/files/figure.png" pageId="38" pageNumber="39">Fig. 2</figureCitation>
|
||
).....................................................
|
||
<taxonomicName id="4C762FF0EA5AD44CFBB8368BD0F8FE42" ID-CoL="854Q7" authority="(Schellenberg, 1931)" baseAuthorityName="Schellenberg" baseAuthorityYear="1931" box="[1084,1436,386,408]" class="Malacostraca" family="Ischyroceridae" genus="Jassa" kingdom="Animalia" order="Amphipoda" pageId="38" pageNumber="39" phylum="Arthropoda" rank="species" species="multidentata">
|
||
<emphasis id="B9028861EA5AD44CFBB8368BD1A9FE4D" box="[1084,1229,386,408]" italics="true" pageId="38" pageNumber="39">P. multidentata</emphasis>
|
||
(
|
||
<bibRefCitation id="EFE72982EA5AD44CFB5E368AD0F1FE42" author="Schellenberg, A." box="[1242,1429,386,408]" pageId="38" pageNumber="39" pagination="1 - 290" refId="ref41976" refString="Schellenberg, A. (1931) Gammariden und Caprelliden des Magellangebietes, Sudgeorgiens und der Westantarktis. Further Zoological Results of the Swedish Antarctic Expedition 1901 - 1903, 2 (6), 1 - 290." type="journal article" year="1931">Schellenberg, 1931</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
</keyLead>
|
||
</paragraph>
|
||
<paragraph id="8BC95473EA5AD44CFF1336A8D0F8FE08" blockId="38.[151,1437,151,467]" pageId="38" pageNumber="39">
|
||
<keyLead id="3087F746EA5AD44CFF1336A8D0F8FE08" pageId="38" pageNumber="39">
|
||
- Gnathopod 1, carpus without a single or cluster of setae at the anterodistal junction of the propodus (
|
||
<figureCitation id="134D48F6EA5AD44CFB1F3697D184FE6C" box="[1179,1248,415,438]" captionStart="FIGURE 28" captionStartId="48.[151,249,996,1020]" captionTargetBox="[151,1426,187,972]" captionTargetId="figure-27@48.[151,1436,181,972]" captionTargetPageId="48" captionText="FIGURE 28. Pleojassa orientalis n. sp. Holotype, adult female, 9.8 mm and male, paratype, ~6.5 mm (full length estimated from comparison with the female as body posterior to segment 4 missing). Southeast corner of Gorilla Head Rock, Macquarie Island, Australia (54°29ʹS, 158°58ʹE), 23 December 1977, J. K. Lowry, coll., AM P.34955, station no. MA-147. Setae are omitted from the male gnathopod 2 profile. All views lateral. Scale 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.4496079" httpUri="https://zenodo.org/record/4496079/files/figure.png" pageId="38" pageNumber="39">Fig. 28</figureCitation>
|
||
). Known only from
|
||
<collectingCountry id="F36114E3EA5AD44CFF6636B5D4EDFE09" box="[226,393,445,467]" name="Australia" pageId="38" pageNumber="39">Macquarie Island</collectingCountry>
|
||
(
|
||
<figureCitation id="134D48F6EA5AD44CFE1236B5D4B4FE09" box="[406,464,445,467]" captionStart="FIGURE 2" captionStartId="6.[151,250,1803,1827]" captionTargetBox="[151,1436,181,1779]" captionTargetId="figure-27@6.[151,1436,181,1779]" captionTargetPageId="6" captionText="FIGURE 2. Distribution records of Pleojassa moorei, P. lowryi, P. wandeli, P. multidentata, and P. orientalis. Red dot: identification confirmed by specimen examination; green triangle: literature record (Supplementary Table S1) with identification not confirmed but judged likely to be this species." figureDoi="http://doi.org/10.5281/zenodo.4496021" httpUri="https://zenodo.org/record/4496021/files/figure.png" pageId="38" pageNumber="39">Fig. 2</figureCitation>
|
||
)..................................................................
|
||
<taxonomicName id="4C762FF0EA5AD44CFB6A36B5D005FE08" ID-CoL="8589P" authority="Conlan, 2021" authorityName="Conlan" authorityYear="2021" box="[1262,1377,445,466]" class="Malacostraca" family="Ischyroceridae" genus="Pleojassa" higherTaxonomySource="CoL" kingdom="Animalia" order="Amphipoda" pageId="38" pageNumber="39" phylum="Arthropoda" rank="species" species="orientalis" status="sp. nov.">
|
||
<emphasis id="B9028861EA5AD44CFB6A36B5D005FE08" box="[1262,1377,445,466]" italics="true" pageId="38" pageNumber="39">P. orientalis</emphasis>
|
||
</taxonomicName>
|
||
<emphasis id="B9028861EA5AD44CFAE336B5D0F8FE08" bold="true" box="[1383,1436,445,466]" pageId="38" pageNumber="39">
|
||
<taxonomicNameLabel id="A231351AEA5AD44CFAE336B5D0F8FE08" box="[1383,1436,445,466]" pageId="38" pageNumber="39" rank="species">n. sp.</taxonomicNameLabel>
|
||
</emphasis>
|
||
</keyLead>
|
||
</paragraph>
|
||
</keyStep>
|
||
</key>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |