160 lines
14 KiB
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160 lines
14 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1065.71687" ID-GBIF-Dataset="edb3cc74-4f60-4678-a622-1a4b5a8c2081" ID-PMC="PMC8563707" ID-Pensoft-Pub="1313-2970-1065-81" ID-Pensoft-UUID="29DDD423DB0D542EA85D0C1EFFAF16FF" ID-PubMed="34759714" ID-ZooBank="629D364D946E4F18B5E0DC12C40E7F98" ModsDocID="1313-2970-1065-81" checkinTime="1635336505665" checkinUser="pensoft" docAuthor="Tomikawa, Ko & Kimura, Naoya" docDate="2021" docId="FE034E58405A5A31AD222B8613EF2E2B" docLanguage="en" docName="ZooKeys 1065: 81-100" docOrigin="ZooKeys 1065" docPubDate="2021-10-26" docSource="http://dx.doi.org/10.3897/zookeys.1065.71687" docTitle="Jesogammarus Bousfield 1979" docType="treatment" docVersion="4" id="29DDD423DB0D542EA85D0C1EFFAF16FF" lastPageNumber="81" masterDocId="29DDD423DB0D542EA85D0C1EFFAF16FF" masterDocTitle="On the brink of extinction: a new freshwater amphipod Jesogammarus acalceolus (Anisogammaridae) from Japan" masterLastPageNumber="100" masterPageNumber="81" pageNumber="81" updateTime="1668155308878" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>On the brink of extinction: a new freshwater amphipod Jesogammarus acalceolus (Anisogammaridae) from Japan</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Tomikawa, Ko</mods:namePart>
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<mods:affiliation>Hiroshima University, Graduate School of Humanities and Social Sciences, 1 - 1 - 1 Kagamiyama, Higashihiroshima, Hiroshima, 739 - 8524, Japan</mods:affiliation>
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<mods:nameIdentifier type="email">tomikawa@hiroshima-u.ac.jp</mods:nameIdentifier>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Kimura, Naoya</mods:namePart>
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<mods:affiliation>Tokiwazaka 1 - 7 - 18, Hirosaki, Aomori, 036 - 8263, Japan</mods:affiliation>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2021</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2021-10-26</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>1065</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>81</mods:start>
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<mods:end>100</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.1065.71687</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1065.71687</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-1065-81</mods:identifier>
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<mods:identifier type="ZooBank">629D364D946E4F18B5E0DC12C40E7F98</mods:identifier>
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<mods:identifier type="Pensoft-UUID">29DDD423DB0D542EA85D0C1EFFAF16FF</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="189532383" LSID="urn:lsid:plazi:treatment:FE034E58405A5A31AD222B8613EF2E2B" httpUri="http://treatment.plazi.org/id/FE034E58405A5A31AD222B8613EF2E2B" lastPageNumber="81" pageId="0" pageNumber="81">
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<subSubSection pageId="0" pageNumber="81" type="nomenclature">
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<paragraph pageId="0" pageNumber="81">
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Genus
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<taxonomicName LSID="FE034E58-405A-5A31-AD22-2B8613EF2E2B" authority="Bousfield, 1979" authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">Jesogammarus Bousfield, 1979</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="81" type="type species">
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<paragraph pageId="0" pageNumber="81">Type species.</paragraph>
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<paragraph pageId="0" pageNumber="81">
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<taxonomicName authorityName="Schellenberg" authorityYear="1937" class="Malacostraca" family="Anisogammaridae" genus="Anisogammarus" kingdom="Animalia" lsidName="Anisogammarus jesoensis" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="jesoensis">
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<emphasis italics="true" pageId="0" pageNumber="81">Anisogammarus jesoensis</emphasis>
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</taxonomicName>
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Schellenberg, 1937
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="81" type="diagnosis">
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<paragraph pageId="0" pageNumber="81">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="81">
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Pleonites not carinate dorsally, with slender and robust setae (robust setae often lacking). Dorsal margins of urosomites with 4 (3), 4 (2), 2 (4) clusters of setae or single robust seta; urosomite 2 without prominent median tooth. Antenna 1 longer than antenna 2; article 1 of peduncle subequal to or slightly longer than article 2. Male antenna 2, flagellum with or without
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<taxonomicName class="Malacostraca" family="Sternophysingidae" genus="Sternophysinx" kingdom="Animalia" lsidName="Sternophysinx calceoli" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="calceoli">Sternophysinx calceoli</taxonomicName>
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. Maxilla 1, palp article 1 without setae. Female gnathopods 1 and 2 strongly dissimilar. Coxal gills on gnathopod 2 and pereopods 3-7, gills 2-5 each with 2 accessory lobes, gills 6 and 7 each with 1 accessory lobe. Uropods 1 and 2, rami extending beyond peduncle of uropod 3. Uropod 3, inner ramus not longer than 0.4 times of that of outer ramus; terminal article distinct. Brood plate 2 of female broadly expanded anteroproximally.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="81" type="remarks">
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<paragraph pageId="0" pageNumber="81">Remarks.</paragraph>
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<paragraph pageId="0" pageNumber="81">
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The presence of a calceolus on the flagellum of male antenna 2 is a major diagnostic feature of
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Jesogammarus</emphasis>
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</taxonomicName>
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, which distinguishes it from
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Ramellogammarus" kingdom="Animalia" lsidName="Ramellogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Ramellogammarus</emphasis>
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</taxonomicName>
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(
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<bibRefCitation author="Bousfield, EL" journalOrPublisher="Bulletin of the Biological Society of Washington" pageId="0" pageNumber="81" pagination="297 - 357" refId="B2" refString="Bousfield, EL, 1979. The amphipod superfamily Gammaroidea in the northeastern Pacific region: systematics and distributional ecology. Bulletin of the Biological Society of Washington 3: 297 - 357" title="The amphipod superfamily Gammaroidea in the northeastern Pacific region: systematics and distributional ecology." volume="3" year="1979">Bousfield 1979</bibRefCitation>
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;
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<bibRefCitation author="Morino, H" journalOrPublisher="Publications of Itako Hydrobiological Station" pageId="0" pageNumber="81" pagination="9 - 55" refId="B28" refString="Morino, H, 1985. Revisional studies on Jesogammarus-Annanogammarus (Gammaroidea: Amphipoda) from central Japan. Publications of Itako Hydrobiological Station 2: 9 - 55" title="Revisional studies on Jesogammarus-Annanogammarus (Gammaroidea: Amphipoda) from central Japan." volume="2" year="1985">Morino 1985</bibRefCitation>
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). However, the discovery of the new species,
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<taxonomicName class="Malacostraca" kingdom="Animalia" lsidName="J. acalceolus" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus">
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<emphasis italics="true" pageId="0" pageNumber="81">J. acalceolus</emphasis>
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</taxonomicName>
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, which lacks a calceolus, indicated that the calceolus was not critical for diagnosis. The genus
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Jesogammarus</emphasis>
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</taxonomicName>
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is distinguishable from
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Ramellogammarus" kingdom="Animalia" lsidName="Ramellogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Ramellogammarus</emphasis>
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</taxonomicName>
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by the dissimilar female gnathopods 1 and 2 and the expanded brood plates of the female. The genus
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Jesogammarus</emphasis>
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</taxonomicName>
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shares a similar coxal gill type with marine
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Locustogammarus" kingdom="Animalia" lsidName="Locustogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Locustogammarus</emphasis>
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</taxonomicName>
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Bousfield, 1979 and
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Spasskogammarus" kingdom="Animalia" lsidName="Spasskogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Spasskogammarus</emphasis>
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</taxonomicName>
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Bousfield, 1979 but differs from these two genera in terms of the following features (features of
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Locustogammarus" kingdom="Animalia" lsidName="Locustogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Locustogammarus</emphasis>
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</taxonomicName>
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and
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Spasskogammarus" kingdom="Animalia" lsidName="Spasskogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Spasskogammarus</emphasis>
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</taxonomicName>
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in parentheses): from
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Locustogammarus" kingdom="Animalia" lsidName="Locustogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Locustogammarus</emphasis>
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</taxonomicName>
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, in terms of longer antenna 1 than antenna 2 (subequal in
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Locustogammarus" kingdom="Animalia" lsidName="Locustogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Locustogammarus</emphasis>
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</taxonomicName>
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), dissimilar female gnathopods 1 and 2 (similar in
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Locustogammarus" kingdom="Animalia" lsidName="Locustogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Locustogammarus</emphasis>
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</taxonomicName>
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), uropods 1 and 2 with rami extending beyond the peduncle of uropod 3 (not extending in
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Locustogammarus" kingdom="Animalia" lsidName="Locustogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Locustogammarus</emphasis>
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</taxonomicName>
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), and a distinct terminal article of uropod 3 (very small in
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Locustogammarus" kingdom="Animalia" lsidName="Locustogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Locustogammarus</emphasis>
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</taxonomicName>
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); from
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Spasskogammarus" kingdom="Animalia" lsidName="Spasskogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Spasskogammarus</emphasis>
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</taxonomicName>
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, in terms of dorsal margins of pleonites with slender setae (lacking in
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Spasskogammarus" kingdom="Animalia" lsidName="Spasskogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Spasskogammarus</emphasis>
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</taxonomicName>
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), longer antenna 1 than antenna 2 (subequal in
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Spasskogammarus" kingdom="Animalia" lsidName="Spasskogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Spasskogammarus</emphasis>
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</taxonomicName>
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), and slender pereopods 5-7 (short in
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<taxonomicName authorityName="Bousfield" authorityYear="1979" class="Malacostraca" family="Anisogammaridae" genus="Spasskogammarus" kingdom="Animalia" lsidName="Spasskogammarus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="81">Spasskogammarus</emphasis>
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</taxonomicName>
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).
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |