561 lines
94 KiB
XML
561 lines
94 KiB
XML
<document ID-CLB-Dataset="3809" 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="1DB82211EAD7502497B695672F0BEFCF" 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 (J.) acalceolus Tomikawa & Kimura 2021, sp. nov." docType="treatment" docUuid="43EABC71-3F5A-48ED-9982-6320B94C6CAC" docUuidSource="ZooBank" docVersion="6" 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="1732840755886" updateUser="ExternalLinkService">
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<mods:title id="837EBD07691A82F004E3718F11554B94">On the brink of extinction: a new freshwater amphipod Jesogammarus acalceolus (Anisogammaridae) from Japan</mods:title>
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<mods:name id="A614D85880AD77BD3418286560476FA2" type="personal">
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<mods:roleTerm id="F7CD344C33A8ECE140991B4A043526F7">Author</mods:roleTerm>
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<mods:namePart id="38F296CEA241A5202FBD6B7869955244">Tomikawa, Ko</mods:namePart>
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<mods:affiliation id="4CFA1070B2D5E942CD0E95803D6CBECB">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 id="AB7A2CE80144D5D467CE00C1276495E2" type="email">tomikawa@hiroshima-u.ac.jp</mods:nameIdentifier>
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<mods:roleTerm id="AA169C767A57C87AE332BB42B713AEB0">Author</mods:roleTerm>
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<mods:namePart id="2BA10F9C6DCFABED4622801D681AE5CB">Kimura, Naoya</mods:namePart>
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<mods:affiliation id="B0EE7BA201491C34DA1BCE16C47A0067">Tokiwazaka 1 - 7 - 18, Hirosaki, Aomori, 036 - 8263, Japan</mods:affiliation>
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<mods:typeOfResource id="A3A38C1BB5692EDDECE0EC37520612B1">text</mods:typeOfResource>
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<mods:title id="5800DCB5ED0247A3581B91A980FDA662">ZooKeys</mods:title>
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<mods:date id="AB6E7660FE4CFE166239181F7E41DD82">2021</mods:date>
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<mods:number id="53D14909C9B1E2EA6880D2D565A6EF9B">2021-10-26</mods:number>
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<mods:url id="2E38E32AD31D32E5AF3923A0ED39A07C">http://dx.doi.org/10.3897/zookeys.1065.71687</mods:url>
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<mods:classification id="B0AAEADCCDBFE7F2C57CB3C0828960CB">journal article</mods:classification>
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<mods:identifier id="8A2B388342C6929C8E1C988047EDCCF1" type="DOI">http://dx.doi.org/10.3897/zookeys.1065.71687</mods:identifier>
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<treatment id="1DB82211EAD7502497B695672F0BEFCF" ID-GBIF-Taxon="189532387" LSID="urn:lsid:zoobank.org:act:43EABC71-3F5A-48ED-9982-6320B94C6CAC" httpUri="http://treatment.plazi.org/id/1DB82211EAD7502497B695672F0BEFCF" lastPageNumber="81" pageId="0" pageNumber="81" scope_family="Anisogammaridae">
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<subSubSection id="6218F3B903A96C596C1DD19B71FF44DD" pageId="0" pageNumber="81" type="nomenclature">
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<paragraph id="5D08D5F4A1BC69FD39D5E61560BC3ED0" pageId="0" pageNumber="81">
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<taxonomicName id="724E394B8693C06025AD26137EBA0344" ID-CoL="8RVQQ" LSID="http://zoobank.org/43EABC71-3F5A-48ED-9982-6320B94C6CAC" authority="Tomikawa & Kimura, 2021" authorityName="Tomikawa & Kimura" authorityYear="2021" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus (J.) acalceolus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" status="sp. nov." subGenus="J.">Jesogammarus (J.) acalceolus</taxonomicName>
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<taxonomicNameLabel id="CABB32BE1A5B142364ABABA5DD7A0D50" pageId="0" pageNumber="81">sp. nov.</taxonomicNameLabel>
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</paragraph>
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||
</subSubSection>
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||
<subSubSection id="75BCAE2FE7F6A200BFE14CF9716719A4" pageId="0" pageNumber="81" type="description">
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<paragraph id="FF91DD997DECFCA3380DBF9DC482C40F" pageId="0" pageNumber="81">
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<figureCitation id="12355B1B14C5A3CBB1CDC52C0CA542E4" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Habitat and live specimens of Jesogammarus (Jesogammarus) acalceolus sp. nov. A the type locality, Haguro Shrine Spring, Hirosaki, Aomori Prefecture, Japan B mate guarding pair, male is upper and female is lower, photographed by Ryu Uchiyama." figureDoi="10.3897/zookeys.1065.71687.figure1" httpUri="https://binary.pensoft.net/fig/603398" pageId="0" pageNumber="81">[New Japanese name: Shitsuko-yokoebi] Figures 1B</figureCitation>
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<figureCitation id="16A3B8D6E4DD05B4BBAF852D139BF382" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">, 3</figureCitation>
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<figureCitation id="68CAA9530A2DDCEDCACE62D7B2DBE597" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">, 4</figureCitation>
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<figureCitation id="E52F2F36E9CC29744D78246ABAD6A5E8" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Jesogammarus (Jesogammarus) acalceolus sp. nov., female (7.3 mm), NSMT-Cr 29004 A peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view B peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view C ischium-dactylus of gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E ischium-dactylus of gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J brood plate on gnathopod 2, lateral view K uropod 3, ventral view." figureDoi="10.3897/zookeys.1065.71687.figure5" httpUri="https://binary.pensoft.net/fig/603402" pageId="0" pageNumber="81">, 5</figureCitation>
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||
</paragraph>
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||
</subSubSection>
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||
<subSubSection id="BFF5220441FE4B34629A96AA300A402F" pageId="0" pageNumber="81" type="materials_examined">
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<paragraph id="8B07B3C3A4B559388BEA42794CA32618" pageId="0" pageNumber="81">Material examined.</paragraph>
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<paragraph id="87BD10733E68D8FB88F1D805B88265A3" pageId="0" pageNumber="81">
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<materialsCitation id="8EE566A643982A8635613BE87C95CF0B" collectingDate="2020-12-10" collectorName="A. Ohtaka, Ohtaka, N, K. Tomikawa" country="Japan" latitude="40.6153" location="Haguro Shrine Spring" longLatPrecision="6" longitude="140.3854" municipality="Hirosaki" specimenCount="1" stateProvince="Aomori Prefecture" typeStatus="Holotype">
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||
<emphasis id="CC3E3529AD854B2CC7644EE68D116EBF" bold="true" italics="true" pageId="0" pageNumber="81">
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||
<typeStatus id="03D82142E928D5C3145F9CA5547033A4">Holotype</typeStatus>
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||
</emphasis>
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||
: male (
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||
<quantity id="C6B57BE34B9FAFD0E44FC98C9449D8DA" metricMagnitude="-3" metricUnit="m" metricValue="7.4" unit="mm" value="7.4">7.4 mm</quantity>
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, NSMT-Cr 29003),
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||
<location id="1BEAC673DA2826A3D31E966CB28FAB5A" LSID="urn:lsid:plazi:treatment:1DB82211EAD7502497B695672F0BEFCF:1BEAC673DA2826A3D31E966CB28FAB5A" country="Japan" latitude="40.6153" longLatPrecision="6" longitude="140.3854" municipality="Hirosaki" name="Haguro Shrine Spring" stateProvince="Aomori Prefecture">Haguro Shrine Spring</location>
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||
,
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<collectingMunicipality id="C1986D730E4BE4004D5F5E7CFE1B1082">Hirosaki</collectingMunicipality>
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||
,
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||
<collectingRegion id="606237E5AE5C601C58319A2013D269B1" country="Japan" name="Aomori">Aomori Prefecture</collectingRegion>
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||
,
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||
<collectingCountry id="EAACB00CB82F7AE896120FAE15E96B4B" name="Japan">Japan</collectingCountry>
|
||
(
|
||
<geoCoordinate id="708E01C882327EB140D2B2C4D380A139" degrees="40.6153" direction="north" orientation="latitude" precision="5" value="40.6153">40.6153°N</geoCoordinate>
|
||
,
|
||
<geoCoordinate id="13D27ACC2FCCA57932E7689DF53FD27D" degrees="140.3854" direction="east" orientation="longitude" precision="5" value="140.3854">140.3854°E</geoCoordinate>
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||
), collected by
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||
<collectorName id="578EBBA5FFE69E07D679FF0B9D3A111F">
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||
A.
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||
<collectorName id="1BF162C415636DFC342F679329853FF2">Ohtaka, N</collectorName>
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||
</collectorName>
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||
. Kimura, and
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<collectorName id="1F20AD74D931DEFEFF0A35A69CE7749E">K. Tomikawa</collectorName>
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||
on
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||
<collectingDate id="84AE265E9E78E37242AAF58451E7DB33" value="2020-12-10">10 December 2020</collectingDate>
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||
</materialsCitation>
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||
.
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||
<emphasis id="86BB3271CBCEFF1D6A7F0424507071C0" bold="true" italics="true" pageId="0" pageNumber="81">
|
||
<typeStatus id="FA896821EF209D5E51E43E571C47A49E">Paratypes</typeStatus>
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||
</emphasis>
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||
:
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||
<specimenCount id="269885D49C45CBDE77AE1BE5CECA128E" type="female">two females</specimenCount>
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(
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||
<quantity id="BF4CEF22B993FC74143E119964268D9B" metricMagnitude="-3" metricUnit="m" metricValue="7.3" unit="mm" value="7.3">7.3 mm</quantity>
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||
, NSMT-Cr 29004;
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<quantity id="F6C25BEA3CAA5845A08AA135C69B0B04" metricMagnitude="-3" metricUnit="m" metricValue="6.7" unit="mm" value="6.7">6.7 mm</quantity>
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, NSMT-Cr 29005 [G1845]),
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<materialsCitation id="2D0824F412CDF36E5B4D037D645FC77D" collectingDate="2018-12-23" collectorName="A. Ohtaka" country="Japan" latitude="40.6153" location="Haguro Shrine Spring" longLatPrecision="6" longitude="140.3854" municipality="Hirosaki" specimenCount="two" specimenCount-male="1" stateProvince="Aomori" typeStatus="holotype">
|
||
<specimenCount id="9D16B65410A4A15CB520F1E7DED04E48" type="male">two male</specimenCount>
|
||
(
|
||
<quantity id="DE5551BDA9DE99EF65BA7A96C3BC36F4" metricMagnitude="-3" metricUnit="m" metricValue="7.7" unit="mm" value="7.7">7.7 mm</quantity>
|
||
, NSMT-Cr 29006;
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<quantity id="C03912C60D22825422190E2FB26D3AE3" metricMagnitude="-3" metricUnit="m" metricValue="7.5" unit="mm" value="7.5">7.5 mm</quantity>
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||
, NSMT-Cr 29007 [G1844]), data same as for the holotype; male (
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||
<quantity id="18562400ACA2D0D6FE6994E35505BA14" metricMagnitude="-3" metricUnit="m" metricValue="6.8" unit="mm" value="6.8">6.8 mm</quantity>
|
||
, NSMT-Cr 29008 [G1625]), same locality of the
|
||
<typeStatus id="B7C856CB8937D1291C8399F915940CFA">holotype</typeStatus>
|
||
, collected by
|
||
<collectorName id="3DDF37D7ED9A0824E44626ADE5642860">A. Ohtaka</collectorName>
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||
on
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||
<collectingDate id="3D96B18639C6081235DE689199729250" value="2018-12-23">23 December 2018</collectingDate>
|
||
</materialsCitation>
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||
;
|
||
<specimenCount id="53B01FBEDECA6CA9BE18F19EAEF2D60D" type="male">3 males</specimenCount>
|
||
(
|
||
<quantity id="4D7B81EE1F0AA39F20AE21B83946AC3E" metricMagnitude="-3" metricUnit="m" metricValue="7.449999999999999" metricValueMax="7.6" metricValueMin="7.3" unit="mm" value="7.449999999999999" valueMax="7.6" valueMin="7.3">7.3-7.6 mm</quantity>
|
||
, NSMT-Cr 29009) and
|
||
<materialsCitation id="3AF9A42447D608B350B48C0F8D4D1FE0" collectingDate="2018-06-17" collectorName="A. Ohtaka" country="Japan" latitude="40.6153" location="Haguro Shrine Spring" longLatPrecision="6" longitude="140.3854" municipality="Hirosaki" specimenCount="three" specimenCount-female="1" stateProvince="Aomori" typeStatus="holotype">
|
||
<specimenCount id="FFBD7760050E5C00F2EFC6787400D550" type="female">three females</specimenCount>
|
||
(
|
||
<quantity id="6FE4BA2AE985BFA11A1A34F6297D2B0C" metricMagnitude="-3" metricUnit="m" metricValue="6.85" metricValueMax="7.3" metricValueMin="6.4" unit="mm" value="6.85" valueMax="7.3" valueMin="6.4">6.4-7.3 mm</quantity>
|
||
, NSMT-Cr 29009), same locality of the
|
||
<typeStatus id="80CE3ED1546838FF68F5FC9AB34DB017">holotype</typeStatus>
|
||
, collected by
|
||
<collectorName id="BD3FE78175EEF33E771C38ABD4BCE3E0">A. Ohtaka</collectorName>
|
||
on
|
||
<collectingDate id="100B6A935F74EC41B4F73D3455DD7BC3" value="2018-06-17">17 June 2018</collectingDate>
|
||
</materialsCitation>
|
||
;
|
||
<specimenCount id="D0DA2578A61166132FE2FBCACF27CBCB" type="male">3 males</specimenCount>
|
||
(5.8-8.0 mm, NSMT-Cr 29009) and
|
||
<materialsCitation id="D8E4A2B0E00BAE3C5D107029FCC31AE9" collectingDate="2018-12-23" collectorName="N. Kimura" country="Japan" latitude="40.6153" location="Haguro Shrine Spring" longLatPrecision="6" longitude="140.3854" municipality="Hirosaki" specimenCount="three" specimenCount-female="1" stateProvince="Aomori" typeStatus="holotype">
|
||
<specimenCount id="F303CE5DA5C67D6F5DE58E2A6B86252F" type="female">three females</specimenCount>
|
||
(
|
||
<quantity id="9C3837313E644B625F563BBCA4DF2427" metricMagnitude="-3" metricUnit="m" metricValue="5.85" metricValueMax="6.4" metricValueMin="5.3" unit="mm" value="5.85" valueMax="6.4" valueMin="5.3">5.3-6.4 mm</quantity>
|
||
, NSMT-Cr 29009), same locality of the
|
||
<typeStatus id="3E054590EC33DC647E01BE309C4DBBDA">holotype</typeStatus>
|
||
, collected by
|
||
<collectorName id="5FDD11F63F0C8E71D1E3F57617BA4931">N. Kimura</collectorName>
|
||
on
|
||
<collectingDate id="F00F3BF7E44C8F0D29EB297CB98D07B2" value="2018-12-23">23 December 2018</collectingDate>
|
||
</materialsCitation>
|
||
;
|
||
<specimenCount id="B9B49260D16A27000D37FF1DB3218628" type="male">seven males</specimenCount>
|
||
(
|
||
<quantity id="A462813CE1A51EDBE0B1F06C4572ACA8" metricMagnitude="-3" metricUnit="m" metricValue="8.2" metricValueMax="8.8" metricValueMin="7.6" unit="mm" value="8.2" valueMax="8.8" valueMin="7.6">7.6-8.8 mm</quantity>
|
||
, NSMT-Cr 29009) and
|
||
<materialsCitation id="E36C75A2A1341BB52AE6D1383739FE8F" collectingDate="2020-12-10" collectorName="N. Kimura" country="Japan" latitude="40.6153" location="Haguro Shrine Spring" longLatPrecision="6" longitude="140.3854" municipality="Hirosaki" specimenCount="three" specimenCount-female="1" stateProvince="Aomori" typeStatus="holotype">
|
||
<specimenCount id="D9339FEC614EFCDA6F16843427369E56" type="female">three females</specimenCount>
|
||
(
|
||
<quantity id="A9E7140BECC309F345F40193B218A62F" metricMagnitude="-3" metricUnit="m" metricValue="6.1" metricValueMax="6.6" metricValueMin="5.6" unit="mm" value="6.1" valueMax="6.6" valueMin="5.6">5.6-6.6 mm</quantity>
|
||
, NSMT-Cr 29009), same locality of the
|
||
<typeStatus id="681D7C24CD8A05454337848C71A57471">holotype</typeStatus>
|
||
, collected by
|
||
<collectorName id="D904F46EB49FB6EF9C4D4347D404F65F">N. Kimura</collectorName>
|
||
on
|
||
<collectingDate id="52D93737AE9ADE55924DF144B9021102" value="2020-12-10">10 December 2020</collectingDate>
|
||
</materialsCitation>
|
||
;
|
||
<specimenCount id="D563E895CFB4FD77A9FA33EE9854DA1E" type="male">10 males</specimenCount>
|
||
(
|
||
<quantity id="6795AEF1278A5A6247D8BE0E3B8480F4" metricMagnitude="-3" metricUnit="m" metricValue="8.4" metricValueMax="9.9" metricValueMin="6.9" unit="mm" value="8.4" valueMax="9.9" valueMin="6.9">6.9-9.9 mm</quantity>
|
||
, NSMT-Cr 29009) and
|
||
<materialsCitation id="9EA839E02D6FF833B00D758C1F2F188A" collectingDate="2020-12-12" collectorName="N. Kimura" country="Japan" latitude="40.6153" location="Haguro Shrine Spring" longLatPrecision="6" longitude="140.3854" municipality="Hirosaki" specimenCount="11" specimenCount-female="11" stateProvince="Aomori" typeStatus="holotype">
|
||
<specimenCount id="97BB671574268710B22C43F7F2C60292" type="female">11 females</specimenCount>
|
||
(
|
||
<quantity id="02B5B189EFDB78FE1F6CC69C8B39298E" metricMagnitude="-3" metricUnit="m" metricValue="7.1" metricValueMax="8.3" metricValueMin="5.9" unit="mm" value="7.1" valueMax="8.3" valueMin="5.9">5.9-8.3 mm</quantity>
|
||
, NSMT-Cr 29009), same locality of the
|
||
<typeStatus id="6FBCEB775CE7481296836C1543ED87A2">holotype</typeStatus>
|
||
, collected by
|
||
<collectorName id="F4E40733770A13E1E55C460F111470C2">N. Kimura</collectorName>
|
||
on
|
||
<collectingDate id="B793F9D353F08564B3E013ECECFF69D9" value="2020-12-12">12 December 2020</collectingDate>
|
||
</materialsCitation>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="6033042E3FD6D7F656AD958C22C30ED1" pageId="0" pageNumber="81" type="diagnosis">
|
||
<paragraph id="F1152C8AE7C606B96CE1F79105B4FD64" pageId="0" pageNumber="81">Diagnosis.</paragraph>
|
||
<paragraph id="16338F4164B59CFF36FB9D1B975371ED" pageId="0" pageNumber="81">
|
||
Dorsal surface of pereonites smooth. Pleonites 1-3 each with fewer than three dorsal setae. Antenna 1 without robust seta on posterodistal corner of peduncular article 1. Male antenna 2 without
|
||
<taxonomicName id="7E71314C6470095A39A8F56EECC43260" 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>
|
||
. Mandible with palp article 1 lacking setae. Uropod 3 without plumose setae on outer ramus.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="BE3DA0334B3B6275FC7F9B2207DB87C1" pageId="0" pageNumber="81" type="description">
|
||
<paragraph id="62A8096FB9919C797D23C9195482008E" pageId="0" pageNumber="81">Description.</paragraph>
|
||
<paragraph id="6D6E9DF6AA99BD1DF58EF053803E0680" pageId="0" pageNumber="81">
|
||
<emphasis id="6A159707781187BEFDFDD6981E16FBC6" bold="true" pageId="0" pageNumber="81">Male</emphasis>
|
||
[7.4 mm, NSMT-Cr 29003].
|
||
</paragraph>
|
||
<paragraph id="3DFB80AF447BD9C0C33C73152F080157" pageId="0" pageNumber="81">
|
||
<emphasis id="4AEAB158425D99477DBE214121BF216C" bold="true" pageId="0" pageNumber="81">
|
||
<emphasis id="F4430D822DABF088F6F10CE406B688FA" italics="true" pageId="0" pageNumber="81">Body</emphasis>
|
||
.
|
||
</emphasis>
|
||
Head (Fig.
|
||
<figureCitation id="4F9DABFA3002E57651D2352BCAB0D2B7" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3</figureCitation>
|
||
), rostrum short; lateral cephalic lobe with ventral margin weakly concave; antennal sinus rounded; eyes small, subreniform, major axis 0.3
|
||
<normalizedToken id="F8A90F05AF4785AA0165A0D5601D8F49" originalValue="×">x</normalizedToken>
|
||
head height. Pereonites, dorsal surfaces smooth (Fig.
|
||
<figureCitation id="43FE7BEC0CB7CCE02A0385D4F1818939" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3</figureCitation>
|
||
). Pleonites 1-3 (Fig.
|
||
<figureCitation id="DD0F039D5DD82F3A82E08ED1BB8C5132" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3B-D</figureCitation>
|
||
), dorsal margins each with three, two, and two setae. Epimeral plate 1 with rounded posterior margin bearing seta, seta on posteroventral corner (Fig.
|
||
<figureCitation id="21E2ABC1DFA274A0EE5C53FAD8799FD5" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3A</figureCitation>
|
||
); epimeral plate 2 with posterior margin almost straight bearing three setae, seta on weakly produced posteroventral corner, two and one robust setae on ventral margin and submargin, respectively (Fig.
|
||
<figureCitation id="5145D0A4441314EEC9A187B7CA037CF0" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3A</figureCitation>
|
||
); epimeral plate 3 with posterior margin almost straight bearing three setae, seta on quadrate posteroventral corner, three robust setae on ventral margin (Fig.
|
||
<figureCitation id="FFA5FFACCC9317D76BBD449AE1E09348" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3A</figureCitation>
|
||
). Urosomite 1 (Fig.
|
||
<figureCitation id="34FE5CD7F3DA6865A8D6036F562DBD2F" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3E</figureCitation>
|
||
) with dorsal margin bearing a pair of lateral robust setae and a middle cluster of robust setae; urosomite 2 (Fig.
|
||
<figureCitation id="5367294FC692DE571AAB1C323FCC4E84" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3F</figureCitation>
|
||
) with dorsal margin bearing a pair of lateral robust setae and clusters of robust setae; urosomite 3 (Fig.
|
||
<figureCitation id="412BC92B255FE72E356499E776B1986F" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3G</figureCitation>
|
||
) with dorsal margin bearing a pair of robust setae.
|
||
</paragraph>
|
||
<caption id="F952F0983F7EC8075D963C15B2A8C0FB" doi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81" start="Figure 3" startId="F3">
|
||
<paragraph id="0B8073F40F4067F44DF78A57280986A4" pageId="0" pageNumber="81">
|
||
<emphasis id="CFAF5ACBDE98146F7BF90E67CE446F92" bold="true" pageId="0" pageNumber="81">Figure 3.</emphasis>
|
||
<taxonomicName id="DBCDF50BC1DED28CC07D8FEA424B9AEB" authorityName="Tomikawa & Kimura" authorityYear="2021" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus (Jesogammarus) acalceolus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" subGenus="Jesogammarus">Jesogammarus (Jesogammarus) acalceolus</taxonomicName>
|
||
sp. nov., male (7.4 mm), NSMT-Cr 29003
|
||
<emphasis id="82311B94305894B6EBF9C088EE634A7E" bold="true" pageId="0" pageNumber="81">A</emphasis>
|
||
habitus, lateral view
|
||
<emphasis id="835502E782D0DA29B53FB21FA296AC97" bold="true" pageId="0" pageNumber="81">B-D</emphasis>
|
||
dorsal margins of pleonites 1-3, respectively, dorsal views
|
||
<emphasis id="E1D369B6AA1DF7AFEF1B38A0C994DFA0" bold="true" pageId="0" pageNumber="81">E-G</emphasis>
|
||
dorsal margins of urosomites 1-3, respectively, dorsal views
|
||
<emphasis id="2D1740640FAE37B1354F39A5017D63E6" bold="true" pageId="0" pageNumber="81">H</emphasis>
|
||
peduncular articles 1-3, accessory flagellum, and flagellar articles 1-4 of antenna 1, medial view
|
||
<emphasis id="AD01FD603D57A1BCD1D1A43FB69AD350" bold="true" pageId="0" pageNumber="81">I</emphasis>
|
||
aesthetasc and associate setae on the flagellum of antenna 1, medial view
|
||
<emphasis id="57D7EC7D6CA71D049B1164C1210B3CF4" bold="true" pageId="0" pageNumber="81">J</emphasis>
|
||
peduncular articles 1-5 and flagellar articles 1-3 of antenna 2, medial view
|
||
<emphasis id="605F2BE9CBA774D820E4D487300D5574" bold="true" pageId="0" pageNumber="81">K</emphasis>
|
||
upper lip, posterior view
|
||
<emphasis id="08AE63CE9966559CBCE2485FFA61316D" bold="true" pageId="0" pageNumber="81">L</emphasis>
|
||
right mandible, medial view
|
||
<emphasis id="98AF2AD25916E01A312F595CEBB5FA40" bold="true" pageId="0" pageNumber="81">M-N</emphasis>
|
||
incisor and lacinia mobilis of left and right mandibles, medial views
|
||
<emphasis id="916356E8BE9DA0211EF1653B4F0EF102" bold="true" pageId="0" pageNumber="81">O</emphasis>
|
||
lower lip, ventral view
|
||
<emphasis id="784F2F3FA3D48ACFC4038CAF06961E5E" bold="true" pageId="0" pageNumber="81">P</emphasis>
|
||
maxilla 1, medial view
|
||
<emphasis id="E0BD913349E528011D8F272C395541AA" bold="true" pageId="0" pageNumber="81">Q</emphasis>
|
||
serrate robust setae on outer plate of maxilla 1, medial view.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="AA9B9F88667731C1C3AA3D157FB1EC8E" pageId="0" pageNumber="81">
|
||
<emphasis id="C93A806800A0C3AF90251A4F9FB93BE1" bold="true" pageId="0" pageNumber="81">
|
||
<emphasis id="463403D6EDC4ABB7691174BA3A9B49BC" italics="true" pageId="0" pageNumber="81">Antennae</emphasis>
|
||
.
|
||
</emphasis>
|
||
Antenna 1 (Fig.
|
||
<figureCitation id="9F29C99CD2E28C9C55D0F2FCE4D047D0" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3H</figureCitation>
|
||
) 0.6
|
||
<normalizedToken id="069319C30543E496ECEA010A8F01CEAD" originalValue="×length">xlength</normalizedToken>
|
||
of body; length ratio of peduncular articles 1-3 in 1.0: 0.9: 0.6; peduncular article 1 with posterodistal corner lacking robust seta, posterior margin with three pairs of setae and single seta; peduncular article 2 with posterior margin bearing six clusters of setae; peduncular article 3 with posterior margin bearing four clusters of setae; accessory flagellum comprising four articles; primary flagellum comprising 20 articulate, aesthetasc on each article. Antenna 2 (Fig.
|
||
<figureCitation id="0F2FA2DDEAF44A245B9119A202CE2C84" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3J</figureCitation>
|
||
) 0.7
|
||
<normalizedToken id="E127978F11C4D5339E1C65C6A62AC007" originalValue="×">x</normalizedToken>
|
||
length of antenna 1; article 4 of peduncular 1.1
|
||
<normalizedToken id="50557AA78FADB712CCF57AF220C876A3" originalValue="×">x</normalizedToken>
|
||
article 5; peduncular articles 4 and 5 with posterior margins each bearing five setal clusters; flagellum comprising 12 articles,
|
||
<taxonomicName id="CF2078DF775AA5E77C9DC5926C580071" 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>
|
||
absent.
|
||
</paragraph>
|
||
<paragraph id="11036D611F8D513E4B24695991AA1B24" pageId="0" pageNumber="81">
|
||
<emphasis id="02B43C8AA1655D56FE7A4FC3D2BEE638" bold="true" pageId="0" pageNumber="81">
|
||
<emphasis id="9B340E6E578A175B9F303458D35484C5" italics="true" pageId="0" pageNumber="81">Mouth parts</emphasis>
|
||
.
|
||
</emphasis>
|
||
Upper lip (Fig.
|
||
<figureCitation id="8CDB50B262E85FF5CA7FA8158A477AE8" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3K</figureCitation>
|
||
) with fine seta on rounded distal margin. Mandibles (Fig.
|
||
<figureCitation id="A903134E62C1D39F94DB2EC9344B9ECD" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3L-N</figureCitation>
|
||
), left and right incisors comprising five and four teeth, respectively, left lacinia mobilis comprising four teeth, right lacinia mobilis bifid with many denticles; molar process triturative with plumose seta; left and right mandibles with seven and five blade-like setae on accessory setal rows, respectively; palp comprising 3 articles with length ratio of 1.0: 3.3: 2.8; article 1 of palp without setae; article 2 with 25 setae; article 3 bearing pair of setae on inner surface, three clusters of setae and single seta on outer surface. Lower lip (Fig.
|
||
<figureCitation id="05D7B3B935772029F2894A2624986B4D" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3O</figureCitation>
|
||
), outer lobes broad, inner lobes indistinct. Maxilla 1 (Fig.
|
||
<figureCitation id="246A7EC6B71880783181D24CEA1B681A" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3P</figureCitation>
|
||
) with medial margin of inner plate bearing 20 plumose setae; eleven serrate robust setae on outer plate apically (Fig.
|
||
<figureCitation id="A0BD6F30452EB61DC669E77F55AEADC3" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3Q</figureCitation>
|
||
); palp comprising 2 articles, article 1 marginally bare, apical margin of article 2 with five robust setae and two slender seta. Maxilla 2 (Fig.
|
||
<figureCitation id="C78B34098B7A7F7464A8E1CF2E3766E8" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4A</figureCitation>
|
||
) with inner plate bearing oblique inner row of 17 plumose setae. Maxilliped (Fig.
|
||
<figureCitation id="480F178B219BD87497C9A4E067BA3344" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4B</figureCitation>
|
||
) with inner plate bearing three apical and two inner marginal robust setae; outer plate, apical margin with plumose setae and inner margin with robust setae; palp comprising four articles, inner margin and submargin of article 2 with rows of setae, article 3 bearing facial setae, slightly curved article 4 with slender nail.
|
||
</paragraph>
|
||
<caption id="9AF7A1C6D4CF35E477E6CCE051162031" doi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81" start="Figure 4" startId="F4">
|
||
<paragraph id="1A133400CDBC4B5EDAC7A71A82AA7C8B" pageId="0" pageNumber="81">
|
||
<emphasis id="D68BEE989D032E935236F1B4BF834C90" bold="true" pageId="0" pageNumber="81">Figure 4.</emphasis>
|
||
<taxonomicName id="EAE43BA70B5FA57F17EE9A5067761317" authorityName="Tomikawa & Kimura" authorityYear="2021" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus (Jesogammarus) acalceolus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" subGenus="Jesogammarus">Jesogammarus (Jesogammarus) acalceolus</taxonomicName>
|
||
sp. nov., male (7.4 mm), NSMT-Cr 29003
|
||
<emphasis id="7F483CF8D105CA0E78E14F67D6EA5A0E" bold="true" pageId="0" pageNumber="81">A</emphasis>
|
||
maxilla 2, medial view
|
||
<emphasis id="DBC1D127017D938B12FDC497B7776AEB" bold="true" pageId="0" pageNumber="81">B</emphasis>
|
||
maxilliped, dorsal view
|
||
<emphasis id="25F09E3EB099CB821824CD5C52BE3235" bold="true" pageId="0" pageNumber="81">C</emphasis>
|
||
gnathopod 1, medial view
|
||
<emphasis id="696FC94C44322F890C78D9F534C5B477" bold="true" pageId="0" pageNumber="81">D</emphasis>
|
||
palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted
|
||
<emphasis id="1BF515638BB987A97740A9040457D7AD" bold="true" pageId="0" pageNumber="81">E</emphasis>
|
||
gnathopod 2, medial view
|
||
<emphasis id="4010EF62BA15299DDB0B9467A78DADC6" bold="true" pageId="0" pageNumber="81">F</emphasis>
|
||
palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted
|
||
<emphasis id="9DFB001ADDE58C7F2F06DACC7490F78C" bold="true" pageId="0" pageNumber="81">G-I</emphasis>
|
||
coxa-ischium of pereopods 5-7, respectively, lateral views
|
||
<emphasis id="D24E03F05FCA9FAD757D1EE57F55B567" bold="true" pageId="0" pageNumber="81">J-O</emphasis>
|
||
coxal gills on gnathopod 2-pereopod 7, respectively, lateral views
|
||
<emphasis id="4CCF948392BF66ECC9E5D64F9D6D1E9A" bold="true" pageId="0" pageNumber="81">P</emphasis>
|
||
pleopod 1, lateral view, distal parts of rami omitted
|
||
<emphasis id="BBA9E60E2E99D51D86D4CB88093F02E8" bold="true" pageId="0" pageNumber="81">Q</emphasis>
|
||
retinacula on peduncle of pleopod 1, lateral view
|
||
<emphasis id="C9BC3777A135FDFCF2BE2792A62E6DC8" bold="true" pageId="0" pageNumber="81">R-S</emphasis>
|
||
uropods 1-2, respectively, dorsal views
|
||
<emphasis id="88E2D9597EFA7EC83868B110C7995D9D" bold="true" pageId="0" pageNumber="81">T</emphasis>
|
||
uropod 3, ventral view
|
||
<emphasis id="5B493D67FFA96CCC4E64100F04A28489" bold="true" pageId="0" pageNumber="81">U</emphasis>
|
||
distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view
|
||
<emphasis id="B14C74FF60A33021D70CEEB7133553DC" bold="true" pageId="0" pageNumber="81">V</emphasis>
|
||
telson, dorsal view.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="7B5FE2D03A237028F0BFC098DCC0062D" pageId="0" pageNumber="81">
|
||
<emphasis id="C200A8DC51169E8E6469D35EFF83F7AB" bold="true" pageId="0" pageNumber="81">
|
||
<taxonomicName id="FBEE85AAF9BDAFFC6570650ABA6D65E5" genus="Gnathopods" lsidName="Gnathopods" pageId="0" pageNumber="81" rank="genus">
|
||
<emphasis id="6FC589443384BCE29E900D09B7825F27" italics="true" pageId="0" pageNumber="81">Gnathopods</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</emphasis>
|
||
Gnathopod 1 (Fig.
|
||
<figureCitation id="E5E0B54BDE7D89977EF805BBE0FD9CD2" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4C, D</figureCitation>
|
||
) with coxa bearing marginal setae ventrally; basis with long setae on anterior and posterior margins; length of carpus 1.4
|
||
<normalizedToken id="BBE7182C72954AA74CC953F9D6F2EBFB" originalValue="×">x</normalizedToken>
|
||
width, with seta on anterior margin; length of propodus 1.3
|
||
<normalizedToken id="7C8AD40402BC9091A568CDBE627D5433" originalValue="×">x</normalizedToken>
|
||
carpus and 1.4
|
||
<normalizedToken id="7EAEDD403AA15BD62AD3A8A6FDF6B3AF" originalValue="×">x</normalizedToken>
|
||
width, bearing two clusters of setae on anterior margin, propodus with oblique and weakly convex palmar margin bearing six medial and ten lateral peg-like robust setae; dactylus weakly curved, as long as palmar margin. Gnathopod 2 (Fig.
|
||
<figureCitation id="0BF50F37DD0F28B58EFAAB5645FFFDFF" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4E, F</figureCitation>
|
||
) with coxa bearing marginal setae ventrally; basis with anterior and posterior margins bearing long setae; length of carpus 1.8
|
||
<normalizedToken id="F43A0E764D38580EC0BAEBD501C03D53" originalValue="×">x</normalizedToken>
|
||
width, bearing setae on anterior margin; length of propodus 1.1
|
||
<normalizedToken id="949E3ACC67E99BDE1D5A6BECD3AD8C68" originalValue="×">x</normalizedToken>
|
||
carpus and 1.6
|
||
<normalizedToken id="B4BDCDB637D0DF328D5D80EC95B28051" originalValue="×">x</normalizedToken>
|
||
width, respectively, with two clusters of setae on anterior margin, propodus with oblique and weakly convex anterior margin bearing eight medial and five lateral peg-like robust setae; dactylus weakly curved, as long as palmar margin.
|
||
</paragraph>
|
||
<paragraph id="9352D01E25D813CBB182328D81C5672E" pageId="0" pageNumber="81">
|
||
<emphasis id="7CE7149C9E40B05AE446D318EC411D65" bold="true" pageId="0" pageNumber="81">
|
||
<emphasis id="A13BFC70E38DA86845159A37C60260AC" italics="true" pageId="0" pageNumber="81">Pereopods</emphasis>
|
||
.
|
||
</emphasis>
|
||
Pereopods 3 and 4 (Fig.
|
||
<figureCitation id="5E3F10F7FFEA2C0716744EC05AC8E16D" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3A</figureCitation>
|
||
) similar, coxa of pereopod 3 subrectangular with ventral setae; coxa of pereopod 4 expanded with posterior concavity, anterodistal corner and ventral margin with setae. Pereopod 5 (Figs
|
||
<figureCitation id="29B084FF8EBBE000B65007D87A9458EB" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3A</figureCitation>
|
||
,
|
||
<figureCitation id="D2AF20F1C0BCC63419903EFA0EDF8FE6" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4G</figureCitation>
|
||
) with bilobed coxa bearing apical seta on anterior lobe, two robust setae on ventral margin of posterior lobe, posterodistal corner of posterior lobe rounded with robust seta; basis with weakly expanded posterior margin bearing setae, posterodistal corner not lobate. Pereopod 6 (Figs
|
||
<figureCitation id="2F70538A8C90B37D358CDF1CF1AA99D8" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3A</figureCitation>
|
||
,
|
||
<figureCitation id="EE1DEC987CC8D61A1E9674195495AE7F" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4H</figureCitation>
|
||
) with bilobed coxa bearing anteroproximal setae and apical seta on anterior lobe, two robust setae on ventral margin of posterior lobe, posterodistal corner of posterior lobe quadrate with robust seta; basis with weakly expanded posterior margin bearing setae, posterodistal corner not lobate. Pereopod 7 (Figs
|
||
<figureCitation id="42557C80F87366E6893326AEF63BD68D" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A habitus, lateral view B-D dorsal margins of pleonites 1 - 3, respectively, dorsal views E-G dorsal margins of urosomites 1 - 3, respectively, dorsal views H peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view I aesthetasc and associate setae on the flagellum of antenna 1, medial view J peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view K upper lip, posterior view L right mandible, medial view M-N incisor and lacinia mobilis of left and right mandibles, medial views O lower lip, ventral view P maxilla 1, medial view Q serrate robust setae on outer plate of maxilla 1, medial view." figureDoi="10.3897/zookeys.1065.71687.figure3" httpUri="https://binary.pensoft.net/fig/603400" pageId="0" pageNumber="81">3A</figureCitation>
|
||
,
|
||
<figureCitation id="32E6307897D2DEF6C9B5A2A21C7393BD" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4I</figureCitation>
|
||
) with weakly concave coxa in ventral margin bearing setae; basis with weakly expanded posterior margin bearing setae, posterodistal corner not lobate with robust and slender setae.
|
||
</paragraph>
|
||
<paragraph id="5DA548BF12B6F25664335E08CA3FC7A0" pageId="0" pageNumber="81">
|
||
<emphasis id="2182F33E9AA31FFCBD39F998F07E5FE3" bold="true" italics="true" pageId="0" pageNumber="81">Coxal gills</emphasis>
|
||
(Fig.
|
||
<figureCitation id="3B8EB4F6CC614A01EA1237AA617242D1" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4J-O</figureCitation>
|
||
) with two accessory lobes on gills 2-5, posterior lobes longer than or equal to anterior ones, one accessory lobe on gills 6 and 7.
|
||
</paragraph>
|
||
<paragraph id="C6E5499DB9FDC77E1632B00A844F94A6" pageId="0" pageNumber="81">
|
||
<emphasis id="1B3924D910EB2FD557019C30854A33D3" bold="true" italics="true" pageId="0" pageNumber="81">Pleopods 1-3</emphasis>
|
||
(Fig.
|
||
<figureCitation id="80132AB5553986534F6E50F860098067" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4P</figureCitation>
|
||
) with peduncle bearing paired retinacula (Fig.
|
||
<figureCitation id="C94B8E93B02C0997A74166B9BEBE768E" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4Q</figureCitation>
|
||
) on inner margin; inner ramus with inner basal margin bearing bifid plumose setae.
|
||
</paragraph>
|
||
<paragraph id="724750E012BD09292ADB29ED4FC3D6F9" pageId="0" pageNumber="81">
|
||
<emphasis id="12879CA6DEC4C20538375BF0556934E1" bold="true" pageId="0" pageNumber="81">
|
||
<emphasis id="DD2EDBC6B2CE994D1DFDD793D4F2B28D" italics="true" pageId="0" pageNumber="81">Uropods</emphasis>
|
||
.
|
||
</emphasis>
|
||
Uropod 1 (Fig.
|
||
<figureCitation id="B41A4B684CC1A96037EB8A4F8FD56AA5" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4R</figureCitation>
|
||
) with peduncle bearing basofacial robust seta, two robust setae on inner and outer margins, one and two robust setae on inner and outer distal corners, respectively; length of inner ramus 0.8
|
||
<normalizedToken id="52B6A89575EA1416F0E31012206B5B63" originalValue="×">x</normalizedToken>
|
||
that of peduncle, inner margin of inner ramus with two robust setae; length of outer ramus 0.9
|
||
<normalizedToken id="0B9196B6C2257033E7D50FCADEA2C9B1" originalValue="×">x</normalizedToken>
|
||
that of inner ramus, inner margin of outer ramus with robust seta. Uropod 2 (Fig.
|
||
<figureCitation id="42511C0ADB0F2A29C67EE94D50074C61" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4S</figureCitation>
|
||
) with peduncle bearing two robust setae on inner and outer margins, respectively, and robust seta on inner and outer distal corners; length of inner ramus 0.9
|
||
<normalizedToken id="D33F856D6184EC2CEA1C9511EF119F8A" originalValue="×">x</normalizedToken>
|
||
that of peduncle, inner margin of inner ramus with two robust seta; length of outer ramus 0.8
|
||
<normalizedToken id="3195EB4807CBDD7756714ADF89FF72F9" originalValue="×">x</normalizedToken>
|
||
that of inner ramus, inner margin of outer ramus with robust seta. Uropod 3 (Fig.
|
||
<figureCitation id="3B27ABFE9D9F82D3D36062A809C3938C" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4T, U</figureCitation>
|
||
) with peduncle length 0.3
|
||
<normalizedToken id="B9106E86B161967558C9ED780883AE9A" originalValue="×">x</normalizedToken>
|
||
that of outer ramus; length of inner ramus 0.3
|
||
<normalizedToken id="66A2E861B65AE7D3E7A804B413885F72" originalValue="×">x</normalizedToken>
|
||
that of outer ramus, inner ramus with slender setae on inner margin and setae apically; outer ramus comprising two articles, proximal article with two clusters of setae on inner and outer margins, some of which robust, lacking plumose setae, length of terminal article 0.2
|
||
<normalizedToken id="9BC357D8ABE3F578FDD2A1A470D9CAC0" originalValue="×">x</normalizedToken>
|
||
that of proximal article, apical part of terminal article with simple setae.
|
||
</paragraph>
|
||
<paragraph id="65C5C837EBE59280625B3C838D447883" pageId="0" pageNumber="81">
|
||
<emphasis id="AEE6A4B731E124C6A4CE2CC3835A4F90" bold="true" italics="true" pageId="0" pageNumber="81">Telson</emphasis>
|
||
(Fig.
|
||
<figureCitation id="E4FCD281256962A45C56FC1845463950" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Jesogammarus (Jesogammarus) acalceolus sp. nov., male (7.4 mm), NSMT-Cr 29003 A maxilla 2, medial view B maxilliped, dorsal view C gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J-O coxal gills on gnathopod 2 - pereopod 7, respectively, lateral views P pleopod 1, lateral view, distal parts of rami omitted Q retinacula on peduncle of pleopod 1, lateral view R-S uropods 1 - 2, respectively, dorsal views T uropod 3, ventral view U distal part of proximal article and terminal article of outer ramus of uropod 3, ventral view V telson, dorsal view." figureDoi="10.3897/zookeys.1065.71687.figure4" httpUri="https://binary.pensoft.net/fig/603401" pageId="0" pageNumber="81">4V</figureCitation>
|
||
) 0.8 times as long as wide, cleft for 67% of length, with robust seta and slender setae on each lobe.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="68D0334BCB4EBC7853965FA98D43DE26" pageId="0" pageNumber="81" type="female">
|
||
<paragraph id="D9B4EA6BCE4E46E646E191E5099B5BF1" pageId="0" pageNumber="81">Female</paragraph>
|
||
<paragraph id="2441B242A284CC023002503AE9F4046B" pageId="0" pageNumber="81">[7.3 mm, NSMT-Cr 29004].</paragraph>
|
||
<paragraph id="CD20C83FE53D124384222993227E0D5F" pageId="0" pageNumber="81">
|
||
<emphasis id="103755B8DE8FFA84BE29EB9708368C5B" bold="true" pageId="0" pageNumber="81">
|
||
<emphasis id="261B9733C058B51EFCB46C72D7883214" italics="true" pageId="0" pageNumber="81">Antennae</emphasis>
|
||
.
|
||
</emphasis>
|
||
Antenna 1 (Fig.
|
||
<figureCitation id="75F2AA8B3AA12C2A79DE67240A5E7A2F" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Jesogammarus (Jesogammarus) acalceolus sp. nov., female (7.3 mm), NSMT-Cr 29004 A peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view B peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view C ischium-dactylus of gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E ischium-dactylus of gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J brood plate on gnathopod 2, lateral view K uropod 3, ventral view." figureDoi="10.3897/zookeys.1065.71687.figure5" httpUri="https://binary.pensoft.net/fig/603402" pageId="0" pageNumber="81">5A</figureCitation>
|
||
), length ratio of peduncular articles 1-3 in 1.0: 0.8: 0.6; peduncular article 1 with pair of setae and single seta on posterior margin; peduncular article 2 with five clusters of setae on posterior margin; accessory flagellum comprising three articles; primary flagellum comprising 17 articles. Antenna 2 (Fig.
|
||
<figureCitation id="5C2FC1A9499BB821696909CA32FD2F48" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Jesogammarus (Jesogammarus) acalceolus sp. nov., female (7.3 mm), NSMT-Cr 29004 A peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view B peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view C ischium-dactylus of gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E ischium-dactylus of gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J brood plate on gnathopod 2, lateral view K uropod 3, ventral view." figureDoi="10.3897/zookeys.1065.71687.figure5" httpUri="https://binary.pensoft.net/fig/603402" pageId="0" pageNumber="81">5B</figureCitation>
|
||
) with peduncular article 4 bearing six clusters or single setae on posterior margin; peduncular article 5 with five clusters or single setae on posterior margin; flagellum comprising eleven articles, lacking
|
||
<taxonomicName id="18B8B4DFB59AD37E1806A66DA9367675" 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>
|
||
.
|
||
</paragraph>
|
||
<caption id="22C69F08E37EA99BBD8E37B1AD0284A4" doi="10.3897/zookeys.1065.71687.figure5" httpUri="https://binary.pensoft.net/fig/603402" pageId="0" pageNumber="81" start="Figure 5" startId="F5">
|
||
<paragraph id="84EDC69260DC60DB7F2C6567B8F1A626" pageId="0" pageNumber="81">
|
||
<emphasis id="27B5468C84E937BCF05F79224C95A01D" bold="true" pageId="0" pageNumber="81">Figure 5.</emphasis>
|
||
<taxonomicName id="85C5E71C6E94A1F2EB29791DC5932058" authorityName="Tomikawa & Kimura" authorityYear="2021" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus (Jesogammarus) acalceolus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" subGenus="Jesogammarus">Jesogammarus (Jesogammarus) acalceolus</taxonomicName>
|
||
sp. nov., female (7.3 mm), NSMT-Cr 29004
|
||
<emphasis id="1EB5D3C068D256AEC60D8DB06FBDD8BF" bold="true" pageId="0" pageNumber="81">A</emphasis>
|
||
peduncular articles 1-3, accessory flagellum, and flagellar articles 1-4 of antenna 1, medial view
|
||
<emphasis id="A803DFDC4C4EEA6E557E21F1D145DAC3" bold="true" pageId="0" pageNumber="81">B</emphasis>
|
||
peduncular articles 1-5 and flagellar articles 1-3 of antenna 2, medial view
|
||
<emphasis id="442F264CEAC3A87A6A84B8B5FA1A5FBE" bold="true" pageId="0" pageNumber="81">C</emphasis>
|
||
ischium-dactylus of gnathopod 1, medial view
|
||
<emphasis id="61ED4703380146D73B06D08077E7A37E" bold="true" pageId="0" pageNumber="81">D</emphasis>
|
||
palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted
|
||
<emphasis id="D570EE9A74BF375743A751453E990DB4" bold="true" pageId="0" pageNumber="81">E</emphasis>
|
||
ischium-dactylus of gnathopod 2, medial view
|
||
<emphasis id="AC4F7985FC6B0E3B3CABFD740F196AD6" bold="true" pageId="0" pageNumber="81">F</emphasis>
|
||
palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted
|
||
<emphasis id="44F2B0798E144A730E11B92DEB7D9908" bold="true" pageId="0" pageNumber="81">G-I</emphasis>
|
||
coxa-ischium of pereopods 5-7, respectively, lateral views
|
||
<emphasis id="927CD24469322F2C17EFA5758A854B80" bold="true" pageId="0" pageNumber="81">J</emphasis>
|
||
brood plate on gnathopod 2, lateral view
|
||
<emphasis id="F04BAC8C3B3ACDD902512E8D646BAA15" bold="true" pageId="0" pageNumber="81">K</emphasis>
|
||
uropod 3, ventral view.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="6A757A2EC72876E0AE1435BD636BDDDA" pageId="0" pageNumber="81">
|
||
<emphasis id="EAD49B3E647F868ECE8D70347A800EF7" bold="true" pageId="0" pageNumber="81">
|
||
<taxonomicName id="F2AA4C4487BDCF657CC47BD69BB0CF5A" genus="Gnathopods" lsidName="Gnathopods" pageId="0" pageNumber="81" rank="genus">
|
||
<emphasis id="4CA4FFD7EF61EB0B29EFEDCA653AF31F" italics="true" pageId="0" pageNumber="81">Gnathopods</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</emphasis>
|
||
Gnathopod 1 (Fig.
|
||
<figureCitation id="F11677C17E107389B6BF8316D2670536" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Jesogammarus (Jesogammarus) acalceolus sp. nov., female (7.3 mm), NSMT-Cr 29004 A peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view B peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view C ischium-dactylus of gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E ischium-dactylus of gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J brood plate on gnathopod 2, lateral view K uropod 3, ventral view." figureDoi="10.3897/zookeys.1065.71687.figure5" httpUri="https://binary.pensoft.net/fig/603402" pageId="0" pageNumber="81">5C, D</figureCitation>
|
||
) with carpus bearing cluster of setae on anterior margin; length of propodus 1.2
|
||
<normalizedToken id="6E9133EE5D771098A41F55279CCACBDD" originalValue="×">x</normalizedToken>
|
||
that of carpus and 1.5
|
||
<normalizedToken id="1DC3D2A723972FA5557BEE49DF5C15A8" originalValue="×">x</normalizedToken>
|
||
width; propodus with eight medial and two lateral robust setae on palmar margin. Gnathopod 2 (Fig.
|
||
<figureCitation id="B0B60B3A5C2FC89AEDFBF7AE3339D8DE" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Jesogammarus (Jesogammarus) acalceolus sp. nov., female (7.3 mm), NSMT-Cr 29004 A peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view B peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view C ischium-dactylus of gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E ischium-dactylus of gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J brood plate on gnathopod 2, lateral view K uropod 3, ventral view." figureDoi="10.3897/zookeys.1065.71687.figure5" httpUri="https://binary.pensoft.net/fig/603402" pageId="0" pageNumber="81">5E, F</figureCitation>
|
||
) with carpus bearing cluster of setae on anterior margin; propodus and carpus approximately the same length, propodus with three medial and two lateral robust setae and one medial and one lateral pectinate robust setae on palmar margin.
|
||
</paragraph>
|
||
<paragraph id="A7604DF15E927BBA189874622E6B9F7D" pageId="0" pageNumber="81">
|
||
<emphasis id="B32D3808D305DB640E2A0559FD5D2D16" bold="true" italics="true" pageId="0" pageNumber="81">Pereopods 5-7</emphasis>
|
||
with more expanded posterior margin of bases than those of male (Fig.
|
||
<figureCitation id="7DA60A852C5E2C8FF4B15D1148E4583C" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Jesogammarus (Jesogammarus) acalceolus sp. nov., female (7.3 mm), NSMT-Cr 29004 A peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view B peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view C ischium-dactylus of gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E ischium-dactylus of gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J brood plate on gnathopod 2, lateral view K uropod 3, ventral view." figureDoi="10.3897/zookeys.1065.71687.figure5" httpUri="https://binary.pensoft.net/fig/603402" pageId="0" pageNumber="81">5G-I</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="041650021406696F9DC4E6C50E7A43E0" pageId="0" pageNumber="81">
|
||
<emphasis id="F0312286EEA3472E42A5351290053C73" bold="true" italics="true" pageId="0" pageNumber="81">Brood plates</emphasis>
|
||
(= oostegites) (Fig.
|
||
<figureCitation id="EB2D5AE293BED435FC9A7DBE7CDB0258" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Jesogammarus (Jesogammarus) acalceolus sp. nov., female (7.3 mm), NSMT-Cr 29004 A peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view B peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view C ischium-dactylus of gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E ischium-dactylus of gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J brood plate on gnathopod 2, lateral view K uropod 3, ventral view." figureDoi="10.3897/zookeys.1065.71687.figure5" httpUri="https://binary.pensoft.net/fig/603402" pageId="0" pageNumber="81">5J</figureCitation>
|
||
) wide, with numerous setae on its margins.
|
||
</paragraph>
|
||
<paragraph id="65A9D0DEE4993F3E9727183A7EE6B13F" pageId="0" pageNumber="81">
|
||
<emphasis id="2032479691C2FBBBE17A8693A55D6660" bold="true" italics="true" pageId="0" pageNumber="81">Uropod 3</emphasis>
|
||
(Fig.
|
||
<figureCitation id="3CEAD2062A21E47B556E0E75721353A2" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Jesogammarus (Jesogammarus) acalceolus sp. nov., female (7.3 mm), NSMT-Cr 29004 A peduncular articles 1 - 3, accessory flagellum, and flagellar articles 1 - 4 of antenna 1, medial view B peduncular articles 1 - 5 and flagellar articles 1 - 3 of antenna 2, medial view C ischium-dactylus of gnathopod 1, medial view D palmar margin of propodus and dactylus of gnathopod 1, medial view, some setae omitted E ischium-dactylus of gnathopod 2, medial view F palmar margin of propodus and dactylus of gnathopod 2, medial view, some setae omitted G-I coxa-ischium of pereopods 5 - 7, respectively, lateral views J brood plate on gnathopod 2, lateral view K uropod 3, ventral view." figureDoi="10.3897/zookeys.1065.71687.figure5" httpUri="https://binary.pensoft.net/fig/603402" pageId="0" pageNumber="81">5K</figureCitation>
|
||
), length of peduncle 0.4
|
||
<normalizedToken id="909D473521F02C3DC54AD086D3D8B61B" originalValue="×">x</normalizedToken>
|
||
that of outer ramus; length of inner ramus 0.2
|
||
<normalizedToken id="ED472F0C832A264316B9DB526A47A5FD" originalValue="×">x</normalizedToken>
|
||
that of outer ramus.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="A58D559F8E2FDA4F1C005D00CE38A894" pageId="0" pageNumber="81" type="variation">
|
||
<paragraph id="B0C0A050A85F467D31FF3C5068981121" pageId="0" pageNumber="81">Variations.</paragraph>
|
||
<paragraph id="5DAA3F038B53F0602BF974F4EB657F2E" pageId="0" pageNumber="81">Although almost all specimens have a pleonite 1 with a pair of setae on the dorsal margin, a few specimens have three setae. Some specimens have a urosomite 1 with a pair of lateral robust setae and a pair of clusters of robust setae on its dorsal margin. The numbers of setal clusters on the posterior margins of the peduncular articles 1-3 of antenna 1 ranged from two to four, six or seven, and two to four, respectively. The number of setal clusters on the posterior margins of the peduncular articles 4 and 5 ranged from five or six and four or five, respectively. Some specimens have robust setae on the outer margin of the outer ramus of uropod 1 and lack robust setae on the inner margin of the outer ramus of uropod 2. Some specimens have a telson with 2 robust setae on each lobe. The number of eggs is up to 9.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="8E8534ADF94C45FB0C503D0652DF867E" pageId="0" pageNumber="81" type="etymology">
|
||
<paragraph id="883075CB6A48617D827AE5B6A1C67502" pageId="0" pageNumber="81">Etymology.</paragraph>
|
||
<paragraph id="4AE4F1F1C3C30B77C27A83BAFC345D27" pageId="0" pageNumber="81">The new specific name derived from the absence of calceolus.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="89B9DD6825A37D3332422A4A115C4454" pageId="0" pageNumber="81" type="remarks">
|
||
<paragraph id="58D072126BE9CE066116E9697D0C02F4" pageId="0" pageNumber="81">Remarks.</paragraph>
|
||
<paragraph id="04594C0D8929C5A77B2841AF520BE6C1" pageId="0" pageNumber="81">
|
||
<taxonomicName id="E4C2DBD1A9F544CAB1E228D94E8FD33A" authorityName="Tomikawa & Kimura" authorityYear="2021" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus (J.) acalceolus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" subGenus="J.">Jesogammarus (J.) acalceolus</taxonomicName>
|
||
sp. nov. differs from its congeners by lacking a calceolus on the flagellum of antenna 2 in male. This new species is similar to
|
||
<taxonomicName id="4C3D6A60862E0F3902A11EE29F766F9F" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) bousfieldi" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="bousfieldi" subGenus="J.">J. (J.) bousfieldi</taxonomicName>
|
||
Tomikawa, Hanzawa & Nakano, 2017 and
|
||
<taxonomicName id="AA96AF1F3A47C3B7765A5DD736B88A48" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) paucisetulosus" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="paucisetulosus" subGenus="J.">J. (J.) paucisetulosus</taxonomicName>
|
||
Morino, 1984 in having the following features: eyes are small; antenna 1 lacks robust setae on the posterodistal corner of the peduncular article 1; antennae 1 and 2 have many long setae on the posterior margins of the peduncular articles; maxilla 1 lacks setae on the outer margin of the palp article 2; and gnathopods 1 and 2 have few setae on the ventral margins of the coxae in female. In addition to the absence of a calceolus,
|
||
<taxonomicName id="8111DD98512E9DEF72A4951CCBBB1BFB" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) acalceolus" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" subGenus="J.">J. (J.) acalceolus</taxonomicName>
|
||
sp. nov. is distinguished from
|
||
<taxonomicName id="9E956D5C12596FD26ED333141E0AE07B" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) bousfieldi" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="bousfieldi" subGenus="J.">J. (J.) bousfieldi</taxonomicName>
|
||
by the pleonites 1-3 each with less than three setae on the dorsal margins (vs. more than four setae in
|
||
<taxonomicName id="8E4FC0FA3633E21A6AB541BB3EE8D5B4" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) bousfieldi" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="bousfieldi" subGenus="J.">J. (J.) bousfieldi</taxonomicName>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="FF53D1F9BB95C1DAEE56983E0BE397E4" pageId="0" pageNumber="81" type="assessment of conservation status">
|
||
<paragraph id="56AB9B5A59EEBA2BD899DB6BC409FCE4" pageId="0" pageNumber="81">Assessment of conservation status.</paragraph>
|
||
<paragraph id="2596CB023F45E52097FCDF3D0C8C3810" pageId="0" pageNumber="81">
|
||
<taxonomicName id="8BAF63F0A86A5CCD00A025B339BB9269" authorityName="Tomikawa & Kimura" authorityYear="2021" class="Malacostraca" family="Anisogammaridae" genus="Jesogammarus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Jesogammarus (J.) acalceolus" order="Amphipoda" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" subGenus="J.">Jesogammarus (J.) acalceolus</taxonomicName>
|
||
sp. nov. was found in a spring located 120 m above sea level, on the slope of the volcanic Mt. Iwaki, Aomori Prefecture, Japan. Although we conducted an intensive survey of inland waters at more than 400 sites in the Aomori Prefecture, this new species was present only in this one spring described above and not found in any others (unpublished data). In most of the freshwater habitats that were investigated,
|
||
<taxonomicName id="7F50ECD8FC9FCF8B0E7CA9C5D2780156" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) jesoensis" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="jesoensis" subGenus="J.">J. (J.) jesoensis</taxonomicName>
|
||
Schellenberg, 1937, which is distributed in Hokkaido and northern Honshu, was present. Because
|
||
<taxonomicName id="ACB59C833DD00BD20A03305CC108F7CF" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) acalceolus" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" subGenus="J.">J. (J.) acalceolus</taxonomicName>
|
||
sp. nov. and
|
||
<taxonomicName id="54423111D3E3A26BD0D2094F4ED84D15" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) jesoensis" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="jesoensis" subGenus="J.">J. (J.) jesoensis</taxonomicName>
|
||
are not closely related (Fig.
|
||
<figureCitation id="EBEFCDC94AAF8B4BDB89270AD1F9DF8E" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Maximum likelihood tree and ancestral state reconstructions for calceolus on male antenna 2. Filled circles at each species represent states of habitat; pie charts at internal nodes present proportional likelihoods of reconstruction. Key nodes are labelled with the proportional likelihood of the presence or absence of the calceolus on male antenna 2, which was reconstructed as most likely to be at that node." figureDoi="10.3897/zookeys.1065.71687.figure2" httpUri="https://binary.pensoft.net/fig/603399" pageId="0" pageNumber="81">2</figureCitation>
|
||
), it is expected that the current distributions of both species are a result of different evolutionary processes. As a positive aspect, the type locality of
|
||
<taxonomicName id="CCA3644D45F857EA92D82957CF2EB2F6" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) acalceolus" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" subGenus="J.">J. (J.) acalceolus</taxonomicName>
|
||
sp. nov. is in the precincts of the Iwaki Haguro Shrine, built in AD 807, as a result of which this type locality has been treated with care by locals for more than 1,000 years (
|
||
<bibRefCitation id="9A7BF532ED8383F7F905CE7511AC9EB0" DOI="https://doi.org/10.5917/jagh1987.37.317" author="Sasaki, S" journalOrPublisher="Journal of Groundwater Hydrology" pageId="0" pageNumber="81" pagination="317 - 328" refId="B36" refString="Sasaki, S, 1995. Visit to valuable water springs (31) Valuable water springs in Aomori Prefecture. Journal of Groundwater Hydrology 37: 317 - 328, DOI: https://doi.org/10.5917/jagh1987.37.317" title="Visit to valuable water springs (31) Valuable water springs in Aomori Prefecture." url="https://doi.org/10.5917/jagh1987.37.317" volume="37" year="1995">Sasaki 1995</bibRefCitation>
|
||
). Therefore, the environment of this spring has been preserved in good condition, allowing the present
|
||
<taxonomicName id="C9AA8527847548B59FC757300DE340E3" class="Malacostraca" kingdom="Animalia" lsidName="J. (J.) acalceolus" order="Mysida" pageId="0" pageNumber="81" phylum="Arthropoda" rank="species" species="acalceolus" subGenus="J.">J. (J.) acalceolus</taxonomicName>
|
||
sp. nov. population to survive. At present, this spring has an abundance of water (60 m3/day) (
|
||
<bibRefCitation id="3F3C63375A730075B7793C663A328C60" author="Yamamoto, S" journalOrPublisher="Tokyo Seitoku College Bulletin" pageId="0" pageNumber="81" pagination="165 - 170" refId="B50" refString="Yamamoto, S, 1994. Volcano slope springs on Mt. Iwaki. Tokyo Seitoku College Bulletin 27: 165 - 170" title="Volcano slope springs on Mt. Iwaki." volume="27" year="1994">Yamamoto 1994</bibRefCitation>
|
||
), and its environment is stable. However, amphipods are known to be highly sensitive to chemicals, such as pesticides (
|
||
<bibRefCitation id="44317A4E912EAB6404690186B07193B9" DOI="https://doi.org/10.1002/etc.5620220529" author="Schulz, R" journalOrPublisher="Environmental Toxicology and Chemistry" pageId="0" pageNumber="81" pagination="1172 - 1176" refId="B38" refString="Schulz, R, 2003. Using a freshwater amphipod in situ bioassay as a sensitive tool to detect pesticide effects in the field. Environmental Toxicology and Chemistry 22: 1172 - 1176, DOI: https://doi.org/10.1002/etc.5620220529" title="Using a freshwater amphipod in situ bioassay as a sensitive tool to detect pesticide effects in the field." url="https://doi.org/10.1002/etc.5620220529" volume="22" year="2003">Schulz 2003</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="78E89108C2F2BC07DAE0EC49FBA66D39" DOI="https://doi.org/10.1371/journal.pone.0062472" author="Nyman, A" journalOrPublisher="Molecular Ecology" pageId="0" pageNumber="81" refId="B30" refString="Nyman, A, Hintermeister, H, Schirmer, K, Ashauer, R, 2013. The insecticide imidacloprid causes mortality of the freshwater amphipod Gammarus pulex by interfering with feeding behavior. PLoS ONE 8: e62472. https://doi.org/10.1371/journal.pone.0062472" title="The insecticide imidacloprid causes mortality of the freshwater amphipod Gammarus pulex by interfering with feeding behavior. PLoS ONE 8: e 62472." url="https://doi.org/10.1371/journal.pone.0062472" year="2013">Nyman et al 2013</bibRefCitation>
|
||
). This species inhabits only a few meters of a spring brooklet surrounded by apple plantations. Therefore, the deterioration of its habitat due to an inflow of agricultural chemicals into spring water may lead to its extinction.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |