177 lines
19 KiB
XML
177 lines
19 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.504.8049" ID-GBIF-Dataset="cc0c4766-1f90-40f0-b36d-5986b311cd29" ID-PMC="PMC4443524" ID-Pensoft-Pub="1313-2970-504-11" ID-PubMed="26019675" ID-ZBK="4BD711727F0344B79C6009DEC6109817" ModsDocAuthor="" ModsDocDate="2015" ModsDocID="1313-2970-504-11" ModsDocOrigin="ZooKeys 504" ModsDocTitle="Status of Exosphaeromaamplicauda (Stimpson, 1857), E.aphrodita (Boone, 1923) and description of three new species (Crustacea, Isopoda, Sphaeromatidae) from the north-eastern Pacific" checkinTime="1451244326114" checkinUser="pensoft" docAuthor="Wall, Adam R., Bruce, Niel L. & Wetzer, Regina" docDate="2015" docId="001760B772B593029458D125689BED44" docLanguage="en" docName="ZooKeys 504: 11-58" docOrigin="ZooKeys 504" docSource="http://dx.doi.org/10.3897/zookeys.504.8049" docTitle="Exosphaeroma russellhansoni Wall, Bruce & Wetzer, 2015, sp. n." docType="treatment" docUuid="9A4E9501-0543-4615-B473-03F54F2C632A" docUuidSource="ZooBank" docVersion="4" lastPageNumber="28" masterDocId="FF986D16FFB7FFAEFF90FFD0CC13FFA4" masterDocTitle="Status of Exosphaeromaamplicauda (Stimpson, 1857), E. aphrodita (Boone, 1923) and description of three new species (Crustacea, Isopoda, Sphaeromatidae) from the north-eastern Pacific" masterLastPageNumber="58" masterPageNumber="11" pageNumber="25" updateTime="1668160335456" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Status of Exosphaeromaamplicauda (Stimpson, 1857), E. aphrodita (Boone, 1923) and description of three new species (Crustacea, Isopoda, Sphaeromatidae) from the north-eastern Pacific</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Wall, Adam R.</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Bruce, Niel L.</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Wetzer, Regina</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2015</mods:date>
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<mods:detail type="volume">
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<mods:number>504</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>11</mods:start>
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<mods:end>58</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.504.8049</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.504.8049</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-504-11</mods:identifier>
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<mods:identifier type="ZBK">4BD711727F0344B79C6009DEC6109817</mods:identifier>
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<mods:identifier type="ZooBank">4BD711727F0344B79C6009DEC6109817</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152060051" LSID="urn:lsid:zoobank.org:act:9A4E9501-0543-4615-B473-03F54F2C632A" httpUri="http://treatment.plazi.org/id/001760B772B593029458D125689BED44" lastPageId="17" lastPageNumber="28" pageId="14" pageNumber="25">
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<subSubSection pageId="14" pageNumber="25" type="multiple">
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<paragraph pageId="14" pageNumber="25">Taxon classification Animalia Isopoda Sphaeromatidae</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="25" type="nomenclature">
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<paragraph pageId="14" pageNumber="25">
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<taxonomicName LSID="http://zoobank.org/9A4E9501-0543-4615-B473-03F54F2C632A" class="Malacostraca" family="Sphaeromatidae" genus="Exosphaeroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Exosphaeroma russellhansoni" order="Isopoda" pageId="14" pageNumber="25" phylum="Arthropoda" rank="species" species="russellhansoni">Exosphaeroma russellhansoni</taxonomicName>
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<taxonomicNameLabel pageId="14" pageNumber="25">sp. n.</taxonomicNameLabel>
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Figures 9, 10, 11, 12, 23, 28
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</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="25" type="material examined">
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<paragraph pageId="14" pageNumber="25">Material examined.</paragraph>
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<paragraph pageId="14" pageNumber="25">
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HOLOTYPE: ♂ (7.0 mm): Washington, Puget Sound, Seattle, Puget Sound Naval Supply Depot, Smith Cove, ~
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<geoCoordinate direction="north" orientation="latitude" precision="5555" value="47.5">47.5°N</geoCoordinate>
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, ~
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<geoCoordinate direction="west" orientation="longitude" precision="5555" value="-122.2">122.2°W</geoCoordinate>
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, under rocks in sand, 11 Aug 1973. A.0030, coll. E.W. Iverson. RW04.010.1, LACM CR-2014.6.
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</paragraph>
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<paragraph pageId="14" pageNumber="25">
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PARATYPES: Allotype gravid ♀ (6.7 mm): same data as holotype, LACM CR-2014.6. 1 ♂ dissected, appendages figured (RW04.010.3), 1 ♂ (RW04.010.4, LACM CR-2014.6.4) and 2 ♀ (6.7 mm RW04.010.5, LACM CR-2014.6.5) prepared as SEM, plus ~70 additional specimens (all life stages RW04.010.6): same locality as RW04.010, LACM CR-2014.6. 3 ♀ (7.2 mm), 1 subadult ♂: south end of San Juan Island, Cattle Point,
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<geoCoordinate direction="north" orientation="latitude" precision="55" value="48.451">48.451°N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="55" value="-122.967">122.967°W</geoCoordinate>
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, rocky intertidal barnacles from
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<taxonomicName class="Maxillopoda" family="Archaeobalanidae" genus="Semibalanus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Semibalanus cariosus" order="Sessilia" pageId="14" pageNumber="25" phylum="Arthropoda" rank="species" species="cariosus">Semibalanus cariosus</taxonomicName>
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, fixed and preserved in 95% ethanol, 7 Apr 2004, coll. R. Wetzer & N.D. Pentcheff. RW04.036.1, LACM CR-2014.7. 1 ♂ (7.9 mm), 1 subadult intermolt: northeast of San Juan Island, Reuben Tarte County Park,
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<geoCoordinate direction="north" orientation="latitude" precision="55" value="48.612">48.612°N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="55" value="-123.098">123.098°W</geoCoordinate>
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, scrapings of vertical rock surface in intertidal, fixed and preserved in 95% ethanol, 9 Apr 2004, coll. R. Wetzer & N.D. Pentcheff. RW04.041.1, LACM CR-2014.8. 6 ♂ (8.3 mm), 4 ♀ (8.7 mm), 2 ♂ dissected for mandibles and figured: San Juan Island, old
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<normalizedToken originalValue="man’s">man's</normalizedToken>
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farm, ~
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<geoCoordinate direction="north" orientation="latitude" precision="5555" value="48.6">48.6°N</geoCoordinate>
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, ~
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<geoCoordinate direction="west" orientation="longitude" precision="5555" value="-122.9">122.9°W</geoCoordinate>
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, under rocks, 30 Jul 1950. USNM Acc. No. 187867, coll. L. Peternick and P. Illg. USNM 1251666. 3 ♂, 1 gravid ♀, 1 subadult: San Juan Islands, False Bay, 1 Aug 1975, transferred to 95% ethanol 5 Oct 2012, coll. R.R. Hessler. RW12.215.1, LACM CR-2014.9.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="16" lastPageNumber="27" pageId="14" pageNumber="25" type="description of male">
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<paragraph pageId="14" pageNumber="25">Description of male.</paragraph>
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<paragraph pageId="14" pageNumber="25">Body length 1.6 width; pereonite 5-6 each without ornamentation, pereonite 7 with weak median process (Figures 9A, B; 23A, D). Pleon with 1 medium tubercle on either side of longitudinal axis (Figures 9A, B; 23A, D). Pleotelson length 0.65 width, dorsal surface with 2 small anterior tubercles; ventrolateral ridge entire, with long setae (Figures 9A, B; 23A, C, D).</paragraph>
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<caption pageId="14" pageNumber="25">
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<paragraph pageId="14" pageNumber="25">
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Figure 9.
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<taxonomicName class="Malacostraca" family="Sphaeromatidae" genus="Exosphaeroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Exosphaeroma russellhansoni" order="Isopoda" pageId="14" pageNumber="25" phylum="Arthropoda" rank="species" species="russellhansoni">Exosphaeroma russellhansoni</taxonomicName>
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sp. n. male holotype LACM CR-2014.6. A dorsal B lateral.
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</paragraph>
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</caption>
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<paragraph pageId="14" pageNumber="25">Antennula peduncle article 1 length 1.2 width, anterior medial margin with 1 palm seta; article 2 length 1.2 width, inferior distal margin with 3 palm setae; article 3 length 2.9 width; flagellum with 9 articles (Figure 10B). Antenna reaching medium margin of pereonite 2, peduncle article 1 with numerous fine simple setae on anterior posterior margin; flagellum with 13 articles (Figure 10A).</paragraph>
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<caption pageId="14" pageNumber="25">
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<paragraph pageId="14" pageNumber="25">
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Figure 10.
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<taxonomicName class="Malacostraca" family="Sphaeromatidae" genus="Exosphaeroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Exosphaeroma russellhansoni" order="Isopoda" pageId="14" pageNumber="25" phylum="Arthropoda" rank="species" species="russellhansoni">Exosphaeroma russellhansoni</taxonomicName>
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sp. n., male paratype LACM CR-2014.6. Male paratype RW04.010.3 A right antenna B right antennula, basal article broken C left maxilliped D left maxilla E male paratype left mandible F right maxillula.
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</paragraph>
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</caption>
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<paragraph pageId="14" pageNumber="25">Left mandible incisor with 3 cusps; lacinia mobilis with 2 cusps; lacinia mobilis spine row comprised of 6 curved, serrate spines; crushing surfaces strongly ridged, with 2 serrate spines (Figure 10E). Maxillula mesial lobe with 4 circumplumose RS; lateral lobe with 9 long, curved, pectinate RS (Figure 10F). Maxilla mesial lobe with 6 plumose RS on gnathal surface; middle lobe with 4 long, curved, pectinate RS; lateral lobe with 4 long, curved, pectinate RS (Figure 10D). Maxilliped endite distal surface with 11 plumose setae; distomesial margin 2 coupling hooks, and 2 large stout plumose setae, and 1 large simple RS; palp article 2 distal apex with 15 long, simple RS; article 3 distal apex with 17 long, simple RS, lateral distal angle with 1 long, simple RS; article 4 distal apex with 8 long, simple RS, lateral distal angle with 1 long, simple RS; article 5 distal apex with 9 long, simple RS (Figure 10C).</paragraph>
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<paragraph pageId="15" pageNumber="26">
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<pageBreakToken pageId="15" pageNumber="26" start="start">Pereopod</pageBreakToken>
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1 (Figure 11A) basis superior margin with 1 palm seta, inferior distal angle with 1 long, simple seta, inferior medial margin setal patch present; ischium length 1.9 width, superior margin with 3 long, simple setae, inferior distal angle with 1 long, simple seta; merus 0.45 ischium length, superior distal angle with 3 long, simple setae; carpus inferior distal angle with 1 long, simple seta; propodus length 2.3 width, 0.93 ischium length, superior distal angle without long, simple setae, inferior margin with 1 long, simple seta; dactylus length 1.5 width, length 0.46 propodus length, inferior margin covered with scales, distal margin with 3 simple setae (Figure 11A). Pereopod 3 (Figure 11B) basis superior margin with 1 palm seta, inferior distal angle with 1 long simple seta, inferior proximal margin with setal patch absent; ischium length 2.4 width, superior margin with 5 long, simple RS, inferior distal angle with 1 simple RS, and with setal patch absent; merus lobate, length 0.95 width, 0.4 ischium length, superior distal angle with a cluster of 5 simple RS, inferior margin covered in setal mat; carpus length 1.3 merus length, 1.4 width, superior margin with 1 long, simple seta on distal angle, inferior margin with setal mat, and long, simple setae absent; propodus weakly curved, length 2.6 width, 1.7 carpus length, superior distal margin with 1 palm seta, inferior margin first 0.67 covered in setal mat; dactylus length 1.2 width, length 0.33 propodus length, inferior margin proximal half with scales, distal margin with 3 long, simple setae (Figure 11B). Pereopod 7 (Figure 11C) basis superior margin with palm setae absent, inferior proximal margin with setal patch absent, inferior distal angle with 1 long, simple seta present; ischium length 3.0 width, superior margin with 10 long, simple RS; merus lobate, merus length 1.7 width, merus length 0.53 ischium length, superior distal angle with 9 RS, inferior margin with setal mat, inferior distal angle with biserrate setae absent; carpus length 2.5 width, carpus length 1.3 merus length, inferior margin with setal mat, superior distal angle with a cluster of 7 long, biserrate setae, superior distal angle with a cluster of 3 long, simple, RS, inferior distal angle with a cluster of 5 long, biserrate setae, inferior distal angle with 1 long, simple RS; propodus weakly curved, length 4.0 width, length 1.2 carpus length, inferior margin with setal mat absent, superior distal angle with 2 long, simple setae, inferior distal margin with 3 long, simple setae, and with palm setae absent; dactylus length 1.6 width, dactylus length 0.24 propodus length, inferior margin with scales, distal margin with 2 simple setae (Figure 11C).
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</paragraph>
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<caption pageId="15" pageNumber="26">
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<paragraph pageId="15" pageNumber="26">
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Figure 11.
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<taxonomicName class="Malacostraca" family="Sphaeromatidae" genus="Exosphaeroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Exosphaeroma russellhansoni" order="Isopoda" pageId="15" pageNumber="26" phylum="Arthropoda" rank="species" species="russellhansoni">Exosphaeroma russellhansoni</taxonomicName>
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sp. n., male holotype LACM CR-2014.6. A left pereopod 1 B left pereopod 3 C left pereopod 7.
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</paragraph>
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</caption>
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<paragraph pageId="16" pageNumber="27">
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<pageBreakToken pageId="16" pageNumber="27" start="start">Penial</pageBreakToken>
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process length 2.7 basal width (Figure 23B).
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</paragraph>
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<paragraph pageId="16" pageNumber="27">Pleopod 1 peduncle length 0.41 width, with a cluster of 4 coupling hooks; endopod mesial margin lightly covered in fine, simple setae; exopod length 1.8 width, ventral surface without fine, simple setae (Figure 12A). Pleopod 2 appendix masculina proximally swollen, distally narrowing, distal end curving mesially, apex weakly hooked mesially, length 11.4 basal width (Figure 12B). Pleopod 3 peduncle with a cluster of 3 coupling hooks, distolateral angle with 2 long, simple setae (Figure 12C). Pleopod 4 peduncle distolateral angle with fine setal patch; endopod distal apex 1 large, plumose seta; exopod distal margin without setae (Figure 12D). Pleopod 5 exopod proximolateral margin with palm setae absent; exopod with distal transverse suture starting laterally, incomplete; exopod with 4 scale patches (Figure 12E). Uropod exopod length 2.4 width; rolled proximolateral margin weakening moving toward lateral, medial margin; mesial margin without setae; endopod length 2.7 width, extends past exopod, mesial proximal margin with setal patch (Figures 12F; 23A, C, D).</paragraph>
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<caption pageId="16" pageNumber="27">
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<paragraph pageId="16" pageNumber="27">
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Figure 12.
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<taxonomicName class="Malacostraca" family="Sphaeromatidae" genus="Exosphaeroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Exosphaeroma russellhansoni" order="Isopoda" pageId="16" pageNumber="27" phylum="Arthropoda" rank="species" species="russellhansoni">Exosphaeroma russellhansoni</taxonomicName>
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sp. n., male paratype LACM CR-2014.6.
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<normalizedToken originalValue="A–E">A-E</normalizedToken>
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left pleopods 1-5, respectively F left uropod.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="28" type="description of female">
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<paragraph pageId="17" pageNumber="28">
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<pageBreakToken pageId="17" pageNumber="28" start="start">Description</pageBreakToken>
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of female.
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</paragraph>
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<paragraph pageId="17" pageNumber="28">Body length 2.7 width; pereonites 1-7 without tubercles, pereonite 7 distomesial margin convex (Figure 23E, F). Pleon with 1 weak posterior tubercle on either side of longitudinal axis (Figure 23E, F). Pleotelson length 0.75 width, dorsum without tubercles; posterior margin of pleotelson acuminate (Figure 23E, F). Uropod exopod proximolateral margin rolled weakly; endopod length 3.7 width, extends past exopod (Figure 23E, F).</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="28" type="size">
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<paragraph pageId="17" pageNumber="28">Size.</paragraph>
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<paragraph pageId="17" pageNumber="28">Largest ♂ 8.3 mm, largest ♀ 8.7 mm.</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="28" type="color">
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<paragraph pageId="17" pageNumber="28">Color.</paragraph>
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<paragraph pageId="17" pageNumber="28">Without chromatophores. Preserved specimen pale buff, whitish.</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="28" type="remarks">
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<paragraph pageId="17" pageNumber="28">Remarks.</paragraph>
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<paragraph pageId="17" pageNumber="28">
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<taxonomicName class="Malacostraca" family="Sphaeromatidae" genus="Exosphaeroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Exosphaeroma russellhansoni" order="Isopoda" pageId="17" pageNumber="28" phylum="Arthropoda" rank="species" species="russellhansoni">Exosphaeroma russellhansoni</taxonomicName>
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sp. n. is morphologically most similar to
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<taxonomicName class="Malacostraca" family="Sphaeromatidae" genus="Exosphaeroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Exosphaeroma amplicauda" order="Isopoda" pageId="17" pageNumber="28" phylum="Arthropoda" rank="species" species="amplicauda">Exosphaeroma amplicauda</taxonomicName>
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but can be easily distinguished by: pereonite 5-6 each without ornamentation, pereonite 7 with weak median process (Figures 9A, B; 23A, D). Appendix masculina distal end curving mesially, apex weakly hooked mesially, length 11.4 basal width (Figure 12B).
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</paragraph>
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<paragraph pageId="17" pageNumber="28">
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<taxonomicName class="Malacostraca" family="Sphaeromatidae" genus="Exosphaeroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Exosphaeroma amplicauda" order="Isopoda" pageId="17" pageNumber="28" phylum="Arthropoda" rank="species" species="amplicauda">Exosphaeroma amplicauda</taxonomicName>
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is distinguished by: pereonites 5 and 6 with one weak median tubercle, and one weak lateral tubercle; pereonite 7 with weak median process and paired lateral tubercles (Figures 1A, B; 21A, D). Appendix masculina distal end curving mesially, straightening at distal tip, length 15.4 basal width (Figure 4B).
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<taxonomicName class="Malacostraca" family="Sphaeromatidae" genus="Exosphaeroma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Exosphaeroma russellhansoni" order="Isopoda" pageId="17" pageNumber="28" phylum="Arthropoda" rank="species" species="russellhansoni">Exosphaeroma russellhansoni</taxonomicName>
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sp. n. is strongly sexually dimorphic; females lacking dorsal tubercles on pereonites 1-7. Weak pereon tubercles are visible only with SEM, but not necessarily evident with light microscopy, and therefore are omitted from line drawings (compare Figures 9 and 23).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="28" type="distribution">
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<paragraph pageId="17" pageNumber="28">Distribution.</paragraph>
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<paragraph pageId="17" pageNumber="28">Washington, Puget Sound and San Juan Island.</paragraph>
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</subSubSection>
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<subSubSection pageId="17" pageNumber="28" type="etymology">
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<paragraph pageId="17" pageNumber="28">Etymology.</paragraph>
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<paragraph pageId="17" pageNumber="28">
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Named to honor Russell Kenneth Hanson,
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<normalizedToken originalValue="ARW’s">ARW's</normalizedToken>
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only maternal uncle who has shaped the person Adam is today by so graciously sharing with Adam his insatiable curiosity, life-long pursuit of perfection and tireless work ethic.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |