161 lines
22 KiB
XML
161 lines
22 KiB
XML
<document id="C991264B8FEECC4F50C3F12CF52F1F29" ID-CLB-Dataset="28158" ID-DOI="10.11646/zootaxa.4563.1.1" ID-GBIF-Dataset="3e3068c1-c158-4d97-9aec-31fc80551edb" ID-ISSN="1175-5326" ID-Zenodo-Dep="2600858" ID-ZooBank="A44D4C11-ADA1-48A8-9F00-B46BDF7B2A49" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1553170725873" checkinUser="plazi" docAuthor="Seeman, Owen D." docDate="2019" docId="03B63A508D760174FF6014B4078647B8" docLanguage="en" docName="zootaxa.4563.1.1.pdf" docOrigin="Zootaxa 4563 (1)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Megisthanus papuanus Womersley 1937" docType="treatment" docVersion="8" lastPageNumber="12" masterDocId="FF8F42288D7D017FFFF7166307564009" masterDocTitle="The megisthanid mites (Mesostigmata: Megisthanidae) of Australia" masterLastPageNumber="40" masterPageNumber="1" pageNumber="12" updateTime="1698702915705" updateUser="ExternalLinkService">
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<mods:title id="2DEEF70481B4B98E12D9A9C34054FD17">The megisthanid mites (Mesostigmata: Megisthanidae) of Australia</mods:title>
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<mods:namePart id="E2F1F9F014632A8FCF54B9E6EF5F4417">Seeman, Owen D.</mods:namePart>
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<mods:title id="CE18DCB7A449306E84F9C936F7CE5C04">Zootaxa</mods:title>
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<mods:part id="3DAF66F076A4C3B703C793692DA29E9D">
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<mods:date id="1F00486DEE59CFD84063BC71589AECB6">2019</mods:date>
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<mods:number id="806AF7B51C2D064575BAA0B9E4EAA4B7">2019-02-28</mods:number>
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<mods:number id="49AEE804D5F34D78B2663E4415A2E481">4563</mods:number>
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<mods:identifier id="2A80B19D1B734765BD650DC4E266D804" type="DOI">10.11646/zootaxa.4563.1.1</mods:identifier>
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<mods:identifier id="EF94612FA3C47633487CB1DC9573BB10" type="ISSN">1175-5326</mods:identifier>
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<treatment id="03B63A508D760174FF6014B4078647B8" ID-DOI="http://doi.org/10.5281/zenodo.5924253" ID-GBIF-Taxon="154474398" ID-Zenodo-Dep="5924253" LSID="urn:lsid:plazi:treatment:03B63A508D760174FF6014B4078647B8" httpUri="http://treatment.plazi.org/id/03B63A508D760174FF6014B4078647B8" lastPageNumber="12" pageId="11" pageNumber="12">
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<subSubSection id="C305D8CD8D760174FF6014B405DB42FB" box="[151,653,727,754]" pageId="11" pageNumber="12" type="nomenclature">
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<paragraph id="8BA08B468D760174FF6014B405DB42FB" blockId="11.[151,653,727,787]" box="[151,653,727,754]" pageId="11" pageNumber="12">
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<heading id="D0E83C2A8D760174FF6014B405DB42FB" bold="true" box="[151,653,727,754]" fontSize="11" level="1" pageId="11" pageNumber="12" reason="1">
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<taxonomicName id="4C1FF0C58D760174FF6014B405DB42FB" authority="Womersley, 1937" authorityName="Womersley" authorityYear="1937" box="[151,653,727,754]" class="Arachnida" family="Megisthanidae" genus="Megisthanus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="papuanus">
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||
<emphasis id="B96B57548D760174FF6014B405DB42FB" bold="true" box="[151,653,727,754]" pageId="11" pageNumber="12">
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<emphasis id="B96B57548D760174FF6014B406E442F8" bold="true" box="[151,434,727,753]" italics="true" pageId="11" pageNumber="12">Megisthanus papuanus</emphasis>
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<bibRefCitation id="EF8EF6B78D760174FE4E14BB05DB42FB" author="Womersley, H." box="[441,653,728,754]" pageId="11" pageNumber="12" pagination="175 - 180" refId="ref22977" refString="Womersley, H. (1937) Australian Acarina of the genus Megisthanus Thorell. Transactions of the Royal Society of South Australia, 61, 175 - 180." type="journal article" year="1937">Womersley, 1937</bibRefCitation>
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</emphasis>
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</taxonomicName>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="C305D8CD8D760174FF60149907A3431A" box="[151,245,762,787]" pageId="11" pageNumber="12" type="description">
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<paragraph id="8BA08B468D760174FF60149907A3431A" blockId="11.[151,653,727,787]" box="[151,245,762,787]" pageId="11" pageNumber="12">
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<figureCitation id="132497C38D760174FF60149907A3431A" box="[151,245,762,787]" captionStart="FIGURE 5" captionStartId="12.[151,250,1517,1539]" captionTargetBox="[161,1421,205,1485]" captionTargetId="figure@12.[151,1436,195,1495]" captionTargetPageId="12" captionText="FIGURE 5. Megisthanus papuanus Womersley, 1937, female, photomicrographs. (A) Posterior dorsal shield, most setae broken; arrows indicated patches of sclerotised sockets that presumably represent broken long setae; (B) sternogenital region; (C) posterior sternoventral shield, setae broken; (D) ventral and anal region. Scale bars = 200 µm." httpUri="https://zenodo.org/record/2600868/files/figure.png" pageId="11" pageNumber="12">Figure 5</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="C305D8CD8D760174FF60152105244351" box="[151,626,834,856]" pageId="11" pageNumber="12" type="reference_group">
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<paragraph id="8BA08B468D760174FF60152105244351" blockId="11.[151,626,834,856]" box="[151,626,834,856]" pageId="11" pageNumber="12">
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<treatmentCitationGroup id="AB0FAC688D760174FF60152105244351" box="[151,626,834,856]" pageId="11" pageNumber="12">
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<taxonomicName id="4C1FF0C58D760174FF60152105384351" authority="Womersley, 1937: 178" authorityName="Womersley" authorityPageNumber="178" authorityYear="1937" box="[151,622,834,856]" class="Arachnida" family="Megisthanidae" genus="Megisthanus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="papuanus">
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<emphasis id="B96B57548D760174FF60152106D74351" box="[151,385,834,856]" italics="true" pageId="11" pageNumber="12">Megisthanus papuanus</emphasis>
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<treatmentCitation id="0ABEAD578D760174FE70152105384351" author="Womersley, H." box="[391,622,834,856]" page="178" pageId="11" pageNumber="12" year="1937">
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<bibRefCitation id="EF8EF6B78D760174FE701521056D4351" author="Womersley, H." box="[391,571,834,856]" pageId="11" pageNumber="12" pagination="175 - 180" refId="ref22977" refString="Womersley, H. (1937) Australian Acarina of the genus Megisthanus Thorell. Transactions of the Royal Society of South Australia, 61, 175 - 180." type="journal article" year="1937">Womersley, 1937</bibRefCitation>
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: 178
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</treatmentCitation>
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</taxonomicName>
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.
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</treatmentCitationGroup>
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</paragraph>
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</subSubSection>
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<subSubSection id="C305D8CD8D760174FF6015E603D44397" box="[151,1154,901,926]" pageId="11" pageNumber="12" type="materials_examined">
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<paragraph id="8BA08B468D760174FF6015E603D44397" blockId="11.[151,1437,901,1969]" box="[151,1154,901,926]" pageId="11" pageNumber="12">
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<emphasis id="B96B57548D760174FF6015E606D64397" bold="true" box="[151,384,901,926]" pageId="11" pageNumber="12">Material examined.</emphasis>
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<materialsCitation id="3B77811B8D760174FE7015E503284397" ID-GBIF-Occurrence="2013950940" box="[391,1150,901,926]" collectionCode="SAM" pageId="11" pageNumber="12" specimenCount="1" specimenCount-female="1">
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<specimenCount id="9D1940CF8D760174FE7015E506BD4397" box="[391,491,901,926]" pageId="11" pageNumber="12" type="female">1 female</specimenCount>
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, Finschafen, Papua, 1933, Rev. Wagner (
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<accessionNumber id="944C16A58D760174FC4115E6035B4397" box="[950,1037,901,926]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/J17326" pageId="11" pageNumber="12" type="EnaNcbi">J17326</accessionNumber>
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). In
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<collectionCode id="ED0E13838D760174FBC915E503284397" box="[1086,1150,902,926]" country="South Africa" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="11" pageNumber="12">SAM</collectionCode>
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</materialsCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="C305D8CD8D760174FF3015CA07B7457B" pageId="11" pageNumber="12" type="diagnosis">
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<paragraph id="8BA08B468D760174FF3015CA0350447C" blockId="11.[151,1437,901,1969]" pageId="11" pageNumber="12">
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<emphasis id="B96B57548D760174FF3015CA061743CB" bold="true" box="[199,321,937,962]" pageId="11" pageNumber="12">Diagnosis.</emphasis>
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<emphasis id="B96B57548D760174FEB015CA06CD43C8" box="[327,411,937,961]" italics="true" pageId="11" pageNumber="12">Female</emphasis>
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(male unknown). Sternal setae st4 probably present (all setae broken). Seta pd2 of femur IV on large projection. Dorsal shield finely punctate, ovate, length
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<quantity id="4CE726A38D760174FC9515AE049E43EC" box="[866,968,973,998]" metricMagnitude="-3" metricUnit="m" metricValue="3.35" pageId="11" pageNumber="12" unit="mm" value="3.35">3.35 mm</quantity>
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, maximum width 2.00 mm (not including secondary sclerotisation), most dorsal shield setae
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<quantity id="4CE726A38D760174FD111591040D4403" box="[742,859,1009,1034]" metricMagnitude="0" metricUnit="m" metricValue="2.286" metricValueMax="2.54" metricValueMin="2.032" pageId="11" pageNumber="12" unit="in" value="90.0" valueMax="100.0" valueMin="80.0">80–100 in</quantity>
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length, smooth; posterolateral region with 35–40 larger, thicker setae, some of which are very long, forming a pair of tufts; podonotum and opisthonotum densely setose. Sternogynal shields fused posteriorly, each bearing five setae; internal genitalia with rudimentary latigynal element. Ventrianal shield large, strongly trapezoidal, widest posterior to anus.
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</paragraph>
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<paragraph id="8BA08B468D760174FF3012E207B7457B" blockId="11.[151,1437,901,1969]" pageId="11" pageNumber="12">
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<emphasis id="B96B57548D760174FF3012E206984493" bold="true" box="[199,462,1153,1178]" pageId="11" pageNumber="12">Differential diagnosis.</emphasis>
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This species is unique in having both an extremely large, trapezoidal ventrianal shield (ca. 700
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<date id="FFA1AD868D760174FF0B12C5061B44B7" box="[252,333,1190,1214]" pageId="11" pageNumber="12" value="1200-10">x 1200</date>
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) and two posterolateral patches of very long setae on the dorsal shield (
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<figureCitation id="132497C38D760174FB7F12C6039A44B7" box="[1160,1228,1189,1214]" captionStart="FIGURE 5" captionStartId="12.[151,250,1517,1539]" captionTargetBox="[161,1421,205,1485]" captionTargetId="figure@12.[151,1436,195,1495]" captionTargetPageId="12" captionText="FIGURE 5. Megisthanus papuanus Womersley, 1937, female, photomicrographs. (A) Posterior dorsal shield, most setae broken; arrows indicated patches of sclerotised sockets that presumably represent broken long setae; (B) sternogenital region; (C) posterior sternoventral shield, setae broken; (D) ventral and anal region. Scale bars = 200 µm." httpUri="https://zenodo.org/record/2600868/files/figure.png" pageId="11" pageNumber="12">Fig. 5</figureCitation>
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<bibRefCitation id="EF8EF6B78D760174FB2212C602C144B7" author="Womersley, H." box="[1237,1431,1189,1214]" pageId="11" pageNumber="12" pagination="175 - 180" refId="ref22977" refString="Womersley, H. (1937) Australian Acarina of the genus Megisthanus Thorell. Transactions of the Royal Society of South Australia, 61, 175 - 180." type="journal article" year="1937">Womersley 1937</bibRefCitation>
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; broken off in examined specimen). As noted by
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<bibRefCitation id="EF8EF6B78D760174FD1212AA04EB44EB" author="Womersley, H." box="[741,957,1225,1250]" pageId="11" pageNumber="12" pagination="175 - 180" refId="ref22977" refString="Womersley, H. (1937) Australian Acarina of the genus Megisthanus Thorell. Transactions of the Royal Society of South Australia, 61, 175 - 180." type="journal article" year="1937">Womersley (1937)</bibRefCitation>
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, the most similar species appears to be
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<taxonomicName id="4C1FF0C58D760174FF60128E056A450F" authority="Stoll, 1893" authorityName="Stoll" authorityYear="1893" box="[151,572,1261,1286]" class="Arachnida" family="Megisthanidae" genus="Megisthanus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="gigantoides">
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<emphasis id="B96B57548D760174FF60128E06E4450C" box="[151,434,1261,1285]" italics="true" pageId="11" pageNumber="12">Megisthanus gigantoides</emphasis>
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<bibRefCitation id="EF8EF6B78D760174FE4B128E056A450F" author="Stoll, O." box="[444,572,1261,1286]" pageId="11" pageNumber="12" refId="ref22826" refString="Stoll, O. (1893) Arachnida Acarides. Biologia Centrali-Americana: Zoology, Botany and Archaeology (Ed: F. D. Godman & O. Salvin). xxi + 55 pp. 21 pls." type="book" year="1893">Stoll, 1893</bibRefCitation>
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</taxonomicName>
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, which shares a similarly shaped sternoventral and ventrianal shield, but is easily distinguished by lacking the posterolateral patches of very long setae. Instead,
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<taxonomicName id="4C1FF0C58D760174FB8A1371027F4520" authorityName="Stoll" authorityYear="1893" box="[1149,1321,1297,1321]" class="Arachnida" family="Megisthanidae" genus="Megisthanus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="gigantoides">
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<emphasis id="B96B57548D760174FB8A137103C24520" box="[1149,1172,1298,1321]" italics="true" pageId="11" pageNumber="12">M</emphasis>
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.
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<emphasis id="B96B57548D760174FB511372027F4520" box="[1190,1321,1297,1321]" italics="true" pageId="11" pageNumber="12">gigantoides</emphasis>
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</taxonomicName>
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has short dorsal setae interspersed with about 10 pairs of long setae inside the lateral and anterior margins of the dorsal shield.
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</paragraph>
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</subSubSection>
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<subSubSection id="C305D8CD8D760174FF30131E078647B8" pageId="11" pageNumber="12" type="discussion">
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<paragraph id="8BA08B468D760174FF30131E069846BF" blockId="11.[151,1437,901,1969]" pageId="11" pageNumber="12">
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<emphasis id="B96B57548D760174FF30131E066D459F" bold="true" box="[199,315,1405,1430]" pageId="11" pageNumber="12">Remarks.</emphasis>
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The specimen examined is probably one of the
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<typeStatus id="54A435E48D760174FC97131D0494459F" box="[864,962,1406,1430]" pageId="11" pageNumber="12" type="syntype">syntypes</typeStatus>
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examined by
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<bibRefCitation id="EF8EF6B78D760174FB93131E026E459F" author="Womersley, H." box="[1124,1336,1405,1430]" pageId="11" pageNumber="12" pagination="175 - 180" refId="ref22977" refString="Womersley, H. (1937) Australian Acarina of the genus Megisthanus Thorell. Transactions of the Royal Society of South Australia, 61, 175 - 180." type="journal article" year="1937">Womersley (1937)</bibRefCitation>
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, but it is not marked as such, and was not even identified as
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<taxonomicName id="4C1FF0C58D760174FCF013C104C845B0" authorityName="Womersley" authorityYear="1937" box="[775,926,1442,1465]" class="Arachnida" family="Megisthanidae" genus="Megisthanus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="papuanus">
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<emphasis id="B96B57548D760174FCF013C1044845B0" box="[775,798,1442,1465]" italics="true" pageId="11" pageNumber="12">M</emphasis>
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.
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<emphasis id="B96B57548D760174FCC613C104C845B0" box="[817,926,1442,1465]" italics="true" pageId="11" pageNumber="12">papuanus</emphasis>
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</taxonomicName>
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. It may not be the specimen illustrated by
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<bibRefCitation id="EF8EF6B78D760174FF6013A6063F45D7" author="Womersley, H." box="[151,361,1477,1502]" pageId="11" pageNumber="12" pagination="175 - 180" refId="ref22977" refString="Womersley, H. (1937) Australian Acarina of the genus Megisthanus Thorell. Transactions of the Royal Society of South Australia, 61, 175 - 180." type="journal article" year="1937">Womersley (1937)</bibRefCitation>
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as legs II–III are missing, most ventral setae are broken and all the long dorsal setae are also lost. However, the specimen could be a remount of the drawn specimen because it is ringed. Most specimens mentioned in
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<bibRefCitation id="EF8EF6B78D760174FECD106E0558462F" author="Womersley, H." box="[314,526,1549,1574]" pageId="11" pageNumber="12" pagination="175 - 180" refId="ref22977" refString="Womersley, H. (1937) Australian Acarina of the genus Megisthanus Thorell. Transactions of the Royal Society of South Australia, 61, 175 - 180." type="journal article" year="1937">Womersley (1937)</bibRefCitation>
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are not ringed, but specimens acquired by Womersley after 1937 are ringed, suggesting that the specimen was, at some time, remounted. Much of Womersley’s megisthanid collection is in poor condition, with the medium so degraded that, on some slides, psocids have crawled beneath the coverslip and become trapped. The only other specimen of
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<taxonomicName id="4C1FF0C58D760174FD78101904774698" authorityName="Womersley" authorityYear="1937" box="[655,801,1658,1681]" class="Arachnida" family="Megisthanidae" genus="Megisthanus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="papuanus">
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<emphasis id="B96B57548D760174FD78101905F04698" box="[655,678,1658,1681]" italics="true" pageId="11" pageNumber="12">M</emphasis>
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.
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<emphasis id="B96B57548D760174FD43101904774698" box="[692,801,1658,1681]" italics="true" pageId="11" pageNumber="12">papuanus</emphasis>
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</taxonomicName>
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in the SAM collection is a specimen in ethanol, which is also considerably damaged.
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</paragraph>
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<paragraph id="8BA08B468D760174FF3010A2078647B8" blockId="11.[151,1437,901,1969]" pageId="11" pageNumber="12">
|
||
<taxonomicName id="4C1FF0C58D760174FF3010A2069846D0" authorityName="Womersley" authorityYear="1937" box="[199,462,1729,1753]" class="Arachnida" family="Megisthanidae" genus="Megisthanus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="papuanus">
|
||
<emphasis id="B96B57548D760174FF3010A2069846D0" box="[199,462,1729,1753]" italics="true" pageId="11" pageNumber="12">Megisthanus papuanus</emphasis>
|
||
</taxonomicName>
|
||
is a highly distinctive species. Diagnostic features obvious in
|
||
<bibRefCitation id="EF8EF6B78D760174FB4310A202CA46D3" author="Womersley, H." box="[1204,1436,1729,1754]" pageId="11" pageNumber="12" pagination="175 - 180" refId="ref22977" refString="Womersley, H. (1937) Australian Acarina of the genus Megisthanus Thorell. Transactions of the Royal Society of South Australia, 61, 175 - 180." type="journal article" year="1937">Womersley’s (1937)</bibRefCitation>
|
||
description are confirmed here: an extremely large, trapezoidal ventrianal shield (
|
||
<figureCitation id="132497C38D760174FB7C108603BA46F7" box="[1163,1260,1765,1790]" captionStart="FIGURE 5" captionStartId="12.[151,250,1517,1539]" captionTargetBox="[161,1421,205,1485]" captionTargetId="figure@12.[151,1436,195,1495]" captionTargetPageId="12" captionText="FIGURE 5. Megisthanus papuanus Womersley, 1937, female, photomicrographs. (A) Posterior dorsal shield, most setae broken; arrows indicated patches of sclerotised sockets that presumably represent broken long setae; (B) sternogenital region; (C) posterior sternoventral shield, setae broken; (D) ventral and anal region. Scale bars = 200 µm." httpUri="https://zenodo.org/record/2600868/files/figure.png" pageId="11" pageNumber="12">Fig. 5D</figureCitation>
|
||
) and the two posterolateral patches of very long setae on the dorsal shield (now only apparent from their large, sclerotised sockets;
|
||
<figureCitation id="132497C38D760174FF0D114E0602474F" box="[250,340,1837,1862]" captionStart="FIGURE 5" captionStartId="12.[151,250,1517,1539]" captionTargetBox="[161,1421,205,1485]" captionTargetId="figure@12.[151,1436,195,1495]" captionTargetPageId="12" captionText="FIGURE 5. Megisthanus papuanus Womersley, 1937, female, photomicrographs. (A) Posterior dorsal shield, most setae broken; arrows indicated patches of sclerotised sockets that presumably represent broken long setae; (B) sternogenital region; (C) posterior sternoventral shield, setae broken; (D) ventral and anal region. Scale bars = 200 µm." httpUri="https://zenodo.org/record/2600868/files/figure.png" pageId="11" pageNumber="12">Fig. 5A</figureCitation>
|
||
). The species is also distinctive by having an exceptionally broad sternoventral shield (posterior width 740) that is highly porose or hypertrichous, having ca. 180 small setae or pores (
|
||
<figureCitation id="132497C38D760174FB891132038E4763" box="[1150,1240,1873,1898]" captionStart="FIGURE 5" captionStartId="12.[151,250,1517,1539]" captionTargetBox="[161,1421,205,1485]" captionTargetId="figure@12.[151,1436,195,1495]" captionTargetPageId="12" captionText="FIGURE 5. Megisthanus papuanus Womersley, 1937, female, photomicrographs. (A) Posterior dorsal shield, most setae broken; arrows indicated patches of sclerotised sockets that presumably represent broken long setae; (B) sternogenital region; (C) posterior sternoventral shield, setae broken; (D) ventral and anal region. Scale bars = 200 µm." httpUri="https://zenodo.org/record/2600868/files/figure.png" pageId="11" pageNumber="12">Fig. 5C</figureCitation>
|
||
); due to all setae being broken, it is difficult to differentiate these, but they appear to be setal bases each with their own associated pore.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |