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<document id="91F7D1361462E7EE0DFD2EFD28D4DF70" ID-DOI="10.1080/00222930310001617733" ID-ISSN="1464-5262" ID-Zenodo-Dep="4676074" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1617980908808" checkinUser="carolina" docAuthor="Walter, David Evans" docDate="2004" docId="243AE64BFC66FFA800E8F39F503F768F" docLanguage="en" docName="JNATHIST.38.2033-2049.pdf" docOrigin="Journal of Natural History 38 (16)" docSource="http://dx.doi.org/10.1080/00222930310001617733" docStyle="DocumentStyle:B3570C21952C5CF44265488F0CE432D6.2:JNatHist.2003-2004.journal_article.2cover" docStyleId="B3570C21952C5CF44265488F0CE432D6" docStyleName="JNatHist.2003-2004.journal_article.2cover" docStyleVersion="2" docTitle="Davacarus gressetti Hunter" docType="treatment" docVersion="4" lastPageNumber="2045" masterDocId="D8039E33FC68FFA6011DF23D513B7364" masterDocTitle="From the subantarctic to the subtropics: a revision of the Davacaridae Kethley, 1977 (Acari: Trigynaspida: Mesostigmata) with the description of a new genus and three new species" masterLastPageNumber="2049" masterPageNumber="2033" pageNumber="2045" updateTime="1698903791947" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="7941888E339F2822E6789E3A12D7A3EC">From the subantarctic to the subtropics: a revision of the Davacaridae Kethley, 1977 (Acari: Trigynaspida: Mesostigmata) with the description of a new genus and three new species</mods:title>
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<mods:namePart id="3951BFFB228950E3C7BE734B6B33EA10">Walter, David Evans</mods:namePart>
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<mods:title id="43810ABC2E35EA4C4F05F16173553A4C">Journal of Natural History</mods:title>
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<mods:date id="F28D67A375FD210E17142C64E35D8371">2004</mods:date>
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<mods:number id="76004C8579109FA58A34075CF5D2B334">2004-08-20</mods:number>
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<mods:number id="88EAA7541111F1680F47322165AEA349">38</mods:number>
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<mods:number id="97F15C7FA980F871E857D0E18EBD08D6">16</mods:number>
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<mods:identifier id="C83A6CC60EBFD11B2B6D538901E9870E" type="DOI">10.1080/00222930310001617733</mods:identifier>
<mods:identifier id="162CD6F71FAE9E8561E933CA98852786" type="ISSN">1464-5262</mods:identifier>
<mods:identifier id="DD5DD424EE3F86F716492F6352FD26D1" type="Zenodo-Dep">4676074</mods:identifier>
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<treatment id="243AE64BFC66FFA800E8F39F503F768F" ID-DOI="http://doi.org/10.5281/zenodo.4675935" ID-Zenodo-Dep="4675935" LSID="urn:lsid:plazi:treatment:243AE64BFC66FFA800E8F39F503F768F" httpUri="http://treatment.plazi.org/id/243AE64BFC66FFA800E8F39F503F768F" lastPageNumber="2045" pageId="14" pageNumber="2045">
<subSubSection id="E48904D6FC66FFA800E8F39F521572DE" box="[501,814,418,442]" pageId="14" pageNumber="2045" type="nomenclature">
<paragraph id="AC2C575DFC66FFA800E8F39F521572DE" blockId="14.[501,814,418,442]" box="[501,814,418,442]" pageId="14" pageNumber="2045">
<heading id="F764E031FC66FFA800E8F39F521572DE" box="[501,814,418,442]" centered="true" fontSize="10" level="2" pageId="14" pageNumber="2045" reason="5">
<taxonomicName id="6B932CDEFC66FFA800E8F39F521572DE" authority="Hunter" authorityName="Hunter" box="[501,814,418,442]" class="Arachnida" family="Davacaridae" genus="Davacarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="14" pageNumber="2045" phylum="Arthropoda" rank="species" species="gressetti">
<emphasis id="9EE78B4FFC66FFA800E8F39F53EA72DE" bold="true" box="[501,721,418,442]" italics="true" pageId="14" pageNumber="2045">Davacarus gressetti</emphasis>
Hunter
</taxonomicName>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="E48904D6FC66FFA80348F3FF503F768F" pageId="14" pageNumber="2045" type="description">
<paragraph id="AC2C575DFC66FFA80348F3FF53F572BE" blockId="14.[597,718,450,474]" box="[597,718,450,474]" pageId="14" pageNumber="2045">
(
<figureCitation id="34A84BD8FC66FFA80341F3FF53FD72BE" box="[604,710,450,474]" captionStart="FIG" captionStartId="6.[161,177,664,686]" captionTargetBox="[159,1114,173,627]" captionTargetId="figure-1@6.[159,1117,170,631]" captionTargetPageId="6" captionText="FIG. 3. Endogynial complexes of (A) Davacarus gressetti Hunter; (B) Davacarus reginaldi, n. sp.; (C) Davacarus lindquisti, n. sp." figureDoi="http://doi.org/10.5281/zenodo.4676080" httpUri="https://zenodo.org/record/4676080/files/figure.png" pageId="14" pageNumber="2045">figure 3A</figureCitation>
)
</paragraph>
<paragraph id="AC2C575DFC66FFA801DAF02653F971F2" blockId="14.[159,1116,539,1515]" pageId="14" pageNumber="2045">
<emphasis id="9EE78B4FFC66FFA801DAF02650967157" box="[199,429,539,563]" italics="true" pageId="14" pageNumber="2045">Material examined.</emphasis>
<materialsCitation id="1CFB5D00FC66FFA800FAF026538571F2" collectingDate="1963-04-09" collectingDateMax="1963-11-14" collectingDateMin="1963-04-09" collectionCode="OSAL" collectorName="H. B. Clagy. In" country="South Georgia and the South Sandwich Islands" county="Macaroni Creek" location="King Edward" municipality="Bird Island" pageId="14" pageNumber="2045" specimenCount="1" typeStatus="paratype">
<typeStatus id="7328E9FFFC66FFA800FAF026535D7156" box="[487,614,539,563]" pageId="14" pageNumber="2045" type="paratype">PARATYPES</typeStatus>
:
<collectingCountry id="D48417CDFC66FFA80362F026520E7157" box="[639,821,539,563]" name="South Georgia and the South Sandwich Islands" pageId="14" pageNumber="2045">South Georgia</collectingCountry>
: female,
<location id="A94C0186FC66FFA802B2F02655637157" LSID="urn:lsid:plazi:treatment:243AE64BFC66FFA800E8F39F503F768F:A94C0186FC66FFA802B2F02655637157" box="[943,1112,539,563]" country="South Georgia and the South Sandwich Islands" county="Macaroni Creek" municipality="Bird Island" name="King Edward" pageId="14" pageNumber="2045">King Edward</location>
,
<date id="D82D719DFC66FFA80182F00650947137" box="[159,431,571,595]" pageId="14" pageNumber="2045" value="1963-11-12" valueMax="1963-11-14" valueMin="1963-11-12">
<collectingDate id="C8698875FC66FFA80182F00650947137" box="[159,431,571,595]" pageId="14" pageNumber="2045" value="1963-11-12" valueMax="1963-11-14" valueMin="1963-11-12">1214 November 1963</collectingDate>
</date>
, ex nest of shoemaker (
<emphasis id="9EE78B4FFC66FFA803C2F001553B7130" box="[735,1024,572,596]" italics="true" pageId="14" pageNumber="2045">Proceilaria aequinoctialis</emphasis>
); male,
<collectingMunicipality id="4C48CD27FC66FFA80182F060501C7111" box="[159,295,605,629]" pageId="14" pageNumber="2045">Bird Island</collectingMunicipality>
(54‡30S, 38‡00W),
<collectingCounty id="454D2FD1FC66FFA80331F06053C97111" box="[556,754,605,629]" pageId="14" pageNumber="2045">Macaroni Creek</collectingCounty>
,
<date id="D82D719DFC66FFA8021BF060529C7111" box="[774,935,605,629]" pageId="14" pageNumber="2045" value="1963-04-09">
<collectingDate id="C8698875FC66FFA8021BF060529C7111" box="[774,935,605,629]" pageId="14" pageNumber="2045" value="1963-04-09">9 April 1963</collectingDate>
</date>
, ex nest greyheaded albatross, coll.
<collectorName id="0166328BFC66FFA800B3F043535D71F2" box="[430,614,638,662]" pageId="14" pageNumber="2045">H. B. Clagy. In</collectorName>
<collectionCode id="CA82CF98FC66FFA8036CF043538571F2" box="[625,702,638,662]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34094" lsid="urn:lsid:biocol.org:col:34094" name="Ohio State University Acarology Laboratory" pageId="14" pageNumber="2045">OSAL</collectionCode>
</materialsCitation>
.
</paragraph>
<paragraph id="AC2C575DFC66FFA801DAF0A0504E705C" blockId="14.[159,1116,539,1515]" pageId="14" pageNumber="2045">
<emphasis id="9EE78B4FFC66FFA801DAF0A050D071D1" box="[199,491,669,693]" italics="true" pageId="14" pageNumber="2045">Other material examined.</emphasis>
<materialsCitation id="1CFB5D00FC66FFA80303F0AA53677192" collectingDate="1968-07-02" collectionCode="OSAL" collectorName="Ile de la Possession &amp; Baie du Navire &amp; L. Davies. In" county="Port Alfred" location="Iles Crozet" municipality="Baie du Navire" pageId="14" pageNumber="2045" specimenCount="1">
<location id="A94C0186FC66FFA80303F0AA539B71D0" LSID="urn:lsid:plazi:treatment:243AE64BFC66FFA800E8F39F503F768F:A94C0186FC66FFA80303F0AA539B71D0" box="[542,672,663,693]" county="Port Alfred" municipality="Baie du Navire" name="Iles Crozet" pageId="14" pageNumber="2045">Îles Crozet</location>
: female,
<collectorName id="0166328BFC66FFA80216F0AA52C971D0" box="[779,1010,663,693]" pageId="14" pageNumber="2045">
<location id="A94C0186FC66FFA80216F0AA52C971D0" LSID="urn:lsid:plazi:treatment:243AE64BFC66FFA800E8F39F503F768F:A94C0186FC66FFA80216F0AA52C971D0" box="[779,1010,663,693]" county="Port Alfred" municipality="Baie du Navire" name="Ile de la Possession" pageId="14" pageNumber="2045">Île de la Possession</location>
</collectorName>
,
<collectorName id="0166328BFC66FFA8051FF0A151D671B1" pageId="14" pageNumber="2045">
<collectingMunicipality id="4C48CD27FC66FFA8051FF0A151D671B1" pageId="14" pageNumber="2045">Baie du Navire</collectingMunicipality>
</collectorName>
near
<collectingCounty id="454D2FD1FC66FFA80027F08050F971B1" box="[314,450,701,725]" pageId="14" pageNumber="2045">Port Alfred</collectingCounty>
(46‡25S, 51‡48E),
<date id="D82D719DFC66FFA803ABF080527E71B1" box="[694,837,701,725]" pageId="14" pageNumber="2045" value="1968-07-02">
<collectingDate id="C8698875FC66FFA803ABF080527E71B1" box="[694,837,701,725]" pageId="14" pageNumber="2045" value="1968-07-02">2 July 1968</collectingDate>
</date>
, ex
<taxonomicName id="6B932CDEFC66FFA80260F08052C271B1" box="[893,1017,701,725]" class="Liliopsida" family="Poaceae" genus="Poa" kingdom="Plantae" order="Poales" pageId="14" pageNumber="2045" phylum="Tracheophyta" rank="species" species="cookii">
<emphasis id="9EE78B4FFC66FFA80260F08052C271B1" box="[893,1017,701,725]" italics="true" pageId="14" pageNumber="2045">Poa cookii</emphasis>
</taxonomicName>
tussock on peat, coll.
<collectorName id="0166328BFC66FFA8004BF0E350C57192" box="[342,510,734,758]" pageId="14" pageNumber="2045">L. Davies. In</collectorName>
<collectionCode id="CA82CF98FC66FFA80312F0E353677192" box="[527,604,734,758]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34094" lsid="urn:lsid:biocol.org:col:34094" name="Ohio State University Acarology Laboratory" pageId="14" pageNumber="2045">OSAL</collectionCode>
</materialsCitation>
.
<materialsCitation id="1CFB5D00FC66FFA8036DF0E35049705C" collectingDate="1985-10-21" collectionCode="ANIC" collectorName="H. Burton. In" country="Heard Island and McDonald Islands" county="Pringlea" location="Spit" municipality="King Penguin" pageId="14" pageNumber="2045" specimenCount="1">
<collectingCountry id="D48417CDFC66FFA8036DF0E352287192" box="[624,787,734,758]" name="Heard Island and McDonald Islands" pageId="14" pageNumber="2045">Heard Island</collectingCountry>
: female, deutonymph, two males,
<location id="A94C0186FC66FFA801EFF0C250247073" LSID="urn:lsid:plazi:treatment:243AE64BFC66FFA800E8F39F503F768F:A94C0186FC66FFA801EFF0C250247073" box="[242,287,767,791]" country="Heard Island and McDonald Islands" county="Pringlea" municipality="King Penguin" name="Spit" pageId="14" pageNumber="2045">Spit</location>
(53‡07S, 73‡30E),
<collectingMunicipality id="4C48CD27FC66FFA80311F0C253947073" box="[524,687,767,791]" pageId="14" pageNumber="2045">King Penguin</collectingMunicipality>
,
<collectingCounty id="454D2FD1FC66FFA803A2F0C2521B7073" box="[703,800,767,791]" pageId="14" pageNumber="2045">Pringlea</collectingCounty>
,
<date id="D82D719DFC66FFA80232F0C252CF7073" box="[815,1012,767,791]" pageId="14" pageNumber="2045" value="1985-10-21">
<collectingDate id="C8698875FC66FFA80232F0C252CF7073" box="[815,1012,767,791]" pageId="14" pageNumber="2045" value="1985-10-21">21 October 1985</collectingDate>
</date>
, coll.
<collectorName id="0166328BFC66FFA80522F0C25020705C" pageId="14" pageNumber="2045">H. Burton. In</collectorName>
<collectionCode id="CA82CF98FC66FFA8003BF11D5049705C" box="[294,370,800,824]" country="Australia" httpUri="http://biocol.org/urn:lsid:biocol.org:col:32981" lsid="urn:lsid:biocol.org:col:32981" name="Australian National Insect Collection" pageId="14" pageNumber="2045">ANIC</collectionCode>
</materialsCitation>
.
</paragraph>
<paragraph id="AC2C575DFC66FFA801DAF10253E77098" blockId="14.[159,1116,539,1515]" pageId="14" pageNumber="2045">
<emphasis id="9EE78B4FFC66FFA801DAF10250077033" box="[199,316,831,855]" italics="true" pageId="14" pageNumber="2045">Diagnosis.</emphasis>
Brown davacarid mites with weakly reticulate podonotal shields; simple, relatively short opisthosomal setae: seven to eight setae on each mesonotal shield, 10 pairs of setae on the ventrianal shield; sternal setae
<emphasis id="9EE78B4FFC66FFA8050FF1BC550970FD" box="[1042,1074,897,921]" italics="true" pageId="14" pageNumber="2045">st1</emphasis>
on small platelets. Anterior opisthosomal gland (
<emphasis id="9EE78B4FFC66FFA803D2F19F53C570DE" box="[719,766,930,954]" italics="true" pageId="14" pageNumber="2045">gld1</emphasis>
) on small platelet with two pores; all glands sessile. Endogynium (
<figureCitation id="34A84BD8FC66FFA80373F1FE53E370BF" box="[622,728,963,987]" captionStart="FIG" captionStartId="6.[161,177,664,686]" captionTargetBox="[159,1114,173,627]" captionTargetId="figure-1@6.[159,1117,170,631]" captionTargetPageId="6" captionText="FIG. 3. Endogynial complexes of (A) Davacarus gressetti Hunter; (B) Davacarus reginaldi, n. sp.; (C) Davacarus lindquisti, n. sp." figureDoi="http://doi.org/10.5281/zenodo.4676080" httpUri="https://zenodo.org/record/4676080/files/figure.png" pageId="14" pageNumber="2045">figure 3A</figureCitation>
) with strut-like base and a pair of lozenge-shaped processes with sparse punctae.
</paragraph>
<paragraph id="AC2C575DFC66FFA801DAF63E503F768F" blockId="14.[159,1116,539,1515]" pageId="14" pageNumber="2045">
<emphasis id="9EE78B4FFC66FFA801DAF63E5377777F" box="[199,588,1027,1051]" italics="true" pageId="14" pageNumber="2045">
Remarks.
<taxonomicName id="6B932CDEFC66FFA80077F63E5377777F" box="[362,588,1027,1051]" class="Arachnida" family="Davacaridae" genus="Davacarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="14" pageNumber="2045" phylum="Arthropoda" rank="species" species="gressetti">Davacarus gressetti</taxonomicName>
</emphasis>
was based on a series of
<specimenCount id="BA959CD4FC66FFA802B7F63E5516777F" box="[938,1069,1027,1051]" pageId="14" pageNumber="2045" type="female">43 females</specimenCount>
,
<specimenCount id="BA959CD4FC66FFA8055CF63E51E4775F" pageId="14" pageNumber="2045" type="male">46 males</specimenCount>
and 29 nymphs from collections on the western subantarctic Bird Island (54‡00S, 38‡00W), at the north-western extreme of
<collectingCountry id="D48417CDFC66FFA8023DF67955197738" box="[800,1058,1092,1116]" name="South Georgia Island" pageId="14" pageNumber="2045">South Georgia Island</collectingCountry>
and from Royal Bay (54‡30S, 36‡00W) on the eastern side of the main island. The
<typeStatus id="7328E9FFFC66FFA80182F6BA503877FB" box="[159,259,1159,1183]" pageId="14" pageNumber="2045" type="holotype">holotype</typeStatus>
female is from the nest of a black-browed albatross, and most of the rest of the series was from the nests of other seabirds (grey-headed and wandering albatross, dove prion, diving petrel and shoemaker), under rocks in a gentoo penguin rookery or in tussock grass. Subsequent collections have turned up
<taxonomicName id="6B932CDEFC66FFA8055DF6D651C07640" class="Arachnida" family="Davacaridae" genus="Davacarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Mesostigmata" pageId="14" pageNumber="2045" phylum="Arthropoda" rank="species" species="gressetti">
<emphasis id="9EE78B4FFC66FFA8055DF6D651C07640" italics="true" pageId="14" pageNumber="2045">D. gressetti</emphasis>
</taxonomicName>
on subantarctic islands far to the east (Île de la Possession,
<collectingCountry id="D48417CDFC66FFA80509F73651D27621" name="Heard Island and McDonald Islands" pageId="14" pageNumber="2045">Heard Island</collectingCountry>
), also in association with seabirds or grass tussocks. Only minor morphological variation seems to occur among these disparate populations on small oceanic islands, suggesting the existence of phoretic dispersal on seabirds. Such behaviour has not been shown in other
<taxonomicName id="6B932CDEFC66FFA803F5F7AD52A076CC" authorityName="Camin &amp; Gorirossi" authorityYear="1955" box="[744,923,1424,1448]" class="Arachnida" higherTaxonomySource="GBIF" infraOrder="Cercomegistina" kingdom="Animalia" order="Mesostigmata" pageId="14" pageNumber="2045" phylum="Arthropoda" rank="infraOrder">Cercomegistina</taxonomicName>
, but may have evolved in response to deteriorating climate in Antarctic populations during the Tertiary.
</paragraph>
</subSubSection>
</treatment>
</document>