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<document id="7070B5780ED9BAC9ED4711998D2F9CCF" ID-DOI="10.1080/00222930410001663320" ID-ISSN="1464-5262" ID-Zenodo-Dep="5214031" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1629215504310" checkinUser="felipe" docAuthor="Gómez, S. &amp; Rocha, C. E. F." docDate="2005" docId="03FD192A110EFF8E9FAB7EA4FEB665C1" docLanguage="en" docName="JNatHist.39.2.133-152.pdf" docOrigin="Journal of Natural History 39 (2)" docSource="http://dx.doi.org/10.1080/00222930410001663320" docStyle="DocumentStyle:7E99CF6C63B49250F2A87C3AEDC82D8C.2:JNatHist.2005-2007.journal_article.2cover" docStyleId="7E99CF6C63B49250F2A87C3AEDC82D8C" docStyleName="JNatHist.2005-2007.journal_article.2cover" docStyleVersion="2" docTitle="Kristensenia Por 1983" docType="treatment" docVersion="3" lastPageNumber="135" masterDocId="FFC46152110DFF8A9E6C7A27FFBA662A" masterDocTitle="A new species of Kristensenia Por, 1983 and a new record and illustrated supplementary description of Halicyclops hurlberti Rocha, 1991 from Mexico" masterLastPageNumber="152" masterPageNumber="133" pageNumber="134" updateTime="1699064790758" updateUser="plazi" zenodo-license-document="CC-BY-4.0" zenodo-license-figures="CC-BY-4.0">
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<mods:title id="6E5BF78A25948926F92BC9E82D710F98">A new species of Kristensenia Por, 1983 and a new record and illustrated supplementary description of Halicyclops hurlberti Rocha, 1991 from Mexico</mods:title>
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<mods:date id="8E4CA17EF3C55FF316AADC0EBEA10C5B">2005</mods:date>
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<treatment id="03FD192A110EFF8E9FAB7EA4FEB665C1" ID-DOI="http://doi.org/10.5281/zenodo.5214061" ID-Zenodo-Dep="5214061" LSID="urn:lsid:plazi:treatment:03FD192A110EFF8E9FAB7EA4FEB665C1" httpUri="http://treatment.plazi.org/id/03FD192A110EFF8E9FAB7EA4FEB665C1" lastPageId="4" lastPageNumber="135" pageId="3" pageNumber="134">
<subSubSection id="C34EFBB7110EFF899FAB7EA4FCF162B1" box="[455,843,1155,1179]" pageId="3" pageNumber="134" type="nomenclature">
<paragraph id="8BEBA83C110EFF899FAB7EA4FCF162B1" blockId="3.[344,953,1090,1179]" box="[455,843,1155,1179]" pageId="3" pageNumber="134">
<heading id="D0A31F50110EFF899FAB7EA4FCF162B1" box="[455,843,1155,1179]" centered="true" fontSize="10" level="2" pageId="3" pageNumber="134" reason="2">
<emphasis id="B920742E110EFF899FAB7EA4FDA362B1" bold="true" box="[455,537,1155,1179]" pageId="3" pageNumber="134">Genus</emphasis>
<taxonomicName id="4C54D3BF110EFF899C467EA4FCF162B1" authority="Por, 1983" authorityName="Por" authorityYear="1983" box="[554,843,1155,1179]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="3" pageNumber="134" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E110EFF899C467EA4FD7762B1" bold="true" box="[554,717,1155,1179]" italics="true" pageId="3" pageNumber="134">Kristensenia</emphasis>
<bibRefCitation id="EFC5D5CD110EFF899CBA7EA4FCF162B1" author="Por FD" box="[726,843,1155,1179]" pageId="3" pageNumber="134" pagination="141 - 153" refId="ref5483" refString="Por FD. 1983. Mangrove swamp-inhabiting Harpacticoida of the family Darcythompsoniidae Lang. Journal of Crustacean Biology 3: 141 - 153." type="journal article" year="1983">Por, 1983</bibRefCitation>
</taxonomicName>
</heading>
</paragraph>
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<subSubSection id="C34EFBB7110EFF8E9E117EFEFEB665C1" lastPageId="4" lastPageNumber="135" pageId="3" pageNumber="134" type="diagnosis">
<paragraph id="8BEBA83C110EFF8E9E117EFEFC9A66CB" blockId="3.[125,1173,1241,1685]" lastBlockId="4.[138,1185,137,1003]" lastPageId="4" lastPageNumber="135" pageId="3" pageNumber="134">
<emphasis id="B920742E110EFF899E117EFEFF5C62DB" box="[125,230,1241,1265]" italics="true" pageId="3" pageNumber="134">Diagnosis</emphasis>
(amended).
<taxonomicName id="4C54D3BF110EFF899FED7EFEFDCD62DB" authorityName="Lang" authorityYear="1936" box="[385,631,1241,1265]" class="Hexanauplia" family="Darcythompsoniidae" kingdom="Animalia" order="Harpacticoida" pageId="3" pageNumber="134" phylum="Arthropoda" rank="family">Darcythompsoniidae</taxonomicName>
. Vermiform. Body somites of about the same length, except for cephalothorax and anal somite which are longest. Rostrum not fused to the cephalothorax; with pointed tip. Female antennule six-segmented, with bare setae only; with aesthetasc on fourth segment. Antenna with allobasis; exopod one-segmented and armed with one element. Mandibular palp two-segmented; basis with one element; endopod with four or five setae; without exopod. Maxillule without division between basis, endo- and exopod; basis with three or four setae; endopod and exopod with two setae each. Maxilla with two endites; proximal endite with one, distal endite with two setae; endopod with three elements. Maxilliped subchelate. P1P4 exopod three-segmented. P1P4 endopod two-segmented. Outer seta of basis of P1 and P2 spine-like, of P3P4 seta-like. Armature formula of P1P4 (EXP/ENP): (P1) I-0; I-0; II, 2, 0/0-0; I, I1, 0; (P2) I-0; I-1; II, 2, 0/0-0; I, 2, 0; (P3) I-0; I-1; II, 2, 1/0-0; I, 2, I; (P4) I-0; I-1; II, 2, 1/0-0; I, 2, I. Female P5 without exopod; baseoendopod armed with seven elements. Female caudal ramus with concave inner lateral contour; with seven setae. Sexual dimorphism observed in male antennule (six-segmented; subchirocer; with geniculation in third segment); inner spine of basis, P5 (with five elements), P6 (with two elements) and caudal ramus (inner lateral concave contour even in male, rather uneven in female).
</paragraph>
<paragraph id="8BEBA83C1109FF8E9EC97ACDFEB665C1" blockId="4.[138,1185,137,1003]" pageId="4" pageNumber="135">
The genus can be separated from
<taxonomicName id="4C54D3BF1109FF8E9C457ACDFC876728" authority="Gomez, 2000" authorityName="Gomez" authorityYear="2000" box="[553,829,234,258]" class="Hexanauplia" family="Darcythompsoniidae" genus="Pabellonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9C457ACDFD206728" box="[553,666,234,258]" italics="true" pageId="4" pageNumber="135">Pabellonia</emphasis>
<bibRefCitation id="EFC5D5CD1109FF8E9CCC7ACDFC876728" author="Gomez S" box="[672,829,234,258]" pageId="4" pageNumber="135" pagination="151 - 536" refId="ref5343" refString="Gomez S. 2000. A new genus, a new species, and a new record of the family Darcythompsoniidae Lang, 1936 (Copepoda, Harpacticoida) from the Gulf of California, Mexico. Zoological Journal of the Linnean Society 129: 151 - 536." type="journal article" year="2000">Gómez, 2000</bibRefCitation>
</taxonomicName>
and
<taxonomicName id="4C54D3BF1109FF8E9D197ACDFF7F6709" authority="T. Scott, 1906" authorityName="T. Scott" authorityYear="1906" class="Hexanauplia" family="Darcythompsoniidae" genus="Darcythompsonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9D197ACDFB896728" box="[885,1075,234,258]" italics="true" pageId="4" pageNumber="135">Darcythompsonia</emphasis>
T. Scott, 1906
</taxonomicName>
by (1) the general shape of the maxilliped (subchelate in
<taxonomicName id="4C54D3BF1109FF8E9D0C7B2CFC5E6709" authorityName="Por" authorityYear="1983" box="[864,996,267,291]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9D0C7B2CFC5E6709" box="[864,996,267,291]" italics="true" pageId="4" pageNumber="135">Kristensenia</emphasis>
</taxonomicName>
, and of a different shape in
<taxonomicName id="4C54D3BF1109FF8E9F4F7B0CFE2E6769" authorityName="Gomez" authorityYear="2000" box="[291,404,299,323]" class="Hexanauplia" family="Darcythompsoniidae" genus="Pabellonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9F4F7B0CFE2E6769" box="[291,404,299,323]" italics="true" pageId="4" pageNumber="135">Pabellonia</emphasis>
</taxonomicName>
and
<taxonomicName id="4C54D3BF1109FF8E9FBE7B0CFD2A6769" authorityName="T. Scott" authorityYear="1906" box="[466,656,299,323]" class="Hexanauplia" family="Darcythompsoniidae" genus="Darcythompsonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9FBE7B0CFD2A6769" box="[466,656,299,323]" italics="true" pageId="4" pageNumber="135">Darcythompsonia</emphasis>
</taxonomicName>
; Gómez (2002: 516) erroneously stated that the maxilliped of
<taxonomicName id="4C54D3BF1109FF8E9F0E7B6CFE696749" authorityName="Gomez" authorityYear="2000" box="[354,467,331,355]" class="Hexanauplia" family="Darcythompsoniidae" genus="Pabellonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9F0E7B6CFE696749" box="[354,467,331,355]" italics="true" pageId="4" pageNumber="135">Pabellonia</emphasis>
</taxonomicName>
was like that in
<taxonomicName id="4C54D3BF1109FF8E9CCA7B6CFC906749" authorityName="Por" authorityYear="1983" box="[678,810,331,355]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9CCA7B6CFC906749" box="[678,810,331,355]" italics="true" pageId="4" pageNumber="135">Kristensenia</emphasis>
</taxonomicName>
); (2) shape of anal operculum (with spinular ornamentation, without sexual dimorphism and not upwardly directed in
<taxonomicName id="4C54D3BF1109FF8E9EE67BABFEB4678E" authorityName="Por" authorityYear="1983" box="[138,270,396,420]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9EE67BABFEB4678E" box="[138,270,396,420]" italics="true" pageId="4" pageNumber="135">Kristensenia</emphasis>
</taxonomicName>
; with spinular ornamentation, without sexual dimorphism, but upwardly directed in
<taxonomicName id="4C54D3BF1109FF8E9F7C7B8BFE3B67EE" authorityName="Gomez" authorityYear="2000" box="[272,385,428,452]" class="Hexanauplia" family="Darcythompsoniidae" genus="Pabellonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9F7C7B8BFE3B67EE" box="[272,385,428,452]" italics="true" pageId="4" pageNumber="135">Pabellonia</emphasis>
</taxonomicName>
; without spinular ornamentation and strongly sexually dimorphic in
<taxonomicName id="4C54D3BF1109FF8E9EE67BEAFEF267CF" authorityName="T. Scott" authorityYear="1906" box="[138,328,461,485]" class="Hexanauplia" family="Darcythompsoniidae" genus="Darcythompsonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9EE67BEAFEF267CF" box="[138,328,461,485]" italics="true" pageId="4" pageNumber="135">Darcythompsonia</emphasis>
</taxonomicName>
); (3) male P2 endopod (sexually dimorphic in
<taxonomicName id="4C54D3BF1109FF8E9DF17BEAFBB467CF" authorityName="Gomez" authorityYear="2000" box="[925,1038,461,485]" class="Hexanauplia" family="Darcythompsoniidae" genus="Pabellonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9DF17BEAFBB467CF" box="[925,1038,461,485]" italics="true" pageId="4" pageNumber="135">Pabellonia</emphasis>
</taxonomicName>
and
<taxonomicName id="4C54D3BF1109FF8E9A387BE9FEBF642F" authorityName="T. Scott" authorityYear="1906" class="Hexanauplia" family="Darcythompsoniidae" genus="Darcythompsonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9A387BE9FEBF642F" italics="true" pageId="4" pageNumber="135">Darcythompsonia</emphasis>
</taxonomicName>
; without sexual dimorphism in
<taxonomicName id="4C54D3BF1109FF8E9CE57BCAFCB7642F" authorityName="Por" authorityYear="1983" box="[649,781,493,517]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9CE57BCAFCB7642F" box="[649,781,493,517]" italics="true" pageId="4" pageNumber="135">Kristensenia</emphasis>
</taxonomicName>
); (4) shape, armature and sexual dimorphism of caudal ramus (
<taxonomicName id="4C54D3BF1109FF8E9F987829FDC2640C" authorityName="Por" authorityYear="1983" box="[500,632,526,550]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9F987829FDC2640C" box="[500,632,526,550]" italics="true" pageId="4" pageNumber="135">Kristensenia</emphasis>
</taxonomicName>
possesses a female caudal ramus with straight and concave outer and inner margin, respectively, broader at its base, about 1.8 times longer than broad, with seven elements, and with the only slight sexual dimorphism being the inner lateral contour of male caudal ramus more even than that of the female; the caudal ramus of
<taxonomicName id="4C54D3BF1109FF8E9F2478A8FE03648D" authorityName="Gomez" authorityYear="2000" box="[328,441,655,679]" class="Hexanauplia" family="Darcythompsoniidae" genus="Pabellonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9F2478A8FE03648D" box="[328,441,655,679]" italics="true" pageId="4" pageNumber="135">Pabellonia</emphasis>
</taxonomicName>
is about twice as long as broad, with convex and slightly concave inner and outer margin, respectively, with inner distal corner protruded into an extension upwardly directed, with five elements only, and without sexual dimorphism; the caudal ramus of
<taxonomicName id="4C54D3BF1109FF8E9E9978D7FE096522" authorityName="T. Scott" authorityYear="1906" box="[245,435,752,776]" class="Hexanauplia" family="Darcythompsoniidae" genus="Darcythompsonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9E9978D7FE096522" box="[245,435,752,776]" italics="true" pageId="4" pageNumber="135">Darcythompsonia</emphasis>
</taxonomicName>
is similar to that of
<taxonomicName id="4C54D3BF1109FF8E9CF878D7FCA26522" authorityName="Por" authorityYear="1983" box="[660,792,752,776]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9CF878D7FCA26522" box="[660,792,752,776]" italics="true" pageId="4" pageNumber="135">Kristensenia</emphasis>
</taxonomicName>
, except for length/width ratio (
<quantity id="4CAC05D91109FF8E9A1678D7FF1A6503" metricMagnitude="-2" metricUnit="m" metricValue="4.572" pageId="4" pageNumber="135" unit="in" value="1.8">1.8 in</quantity>
<taxonomicName id="4C54D3BF1109FF8E9EC77936FE956503" authorityName="Por" authorityYear="1983" box="[171,303,785,809]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9EC77936FE956503" box="[171,303,785,809]" italics="true" pageId="4" pageNumber="135">Kristensenia</emphasis>
</taxonomicName>
and less than
<quantity id="4CAC05D91109FF8E9F8F7936FDA96503" box="[483,531,785,809]" metricMagnitude="-2" metricUnit="m" metricValue="2.54" pageId="4" pageNumber="135" unit="in" value="1.0">1 in</quantity>
<taxonomicName id="4C54D3BF1109FF8E9C727936FD666503" authorityName="T. Scott" authorityYear="1906" box="[542,732,785,809]" class="Hexanauplia" family="Darcythompsoniidae" genus="Darcythompsonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9C727936FD666503" box="[542,732,785,809]" italics="true" pageId="4" pageNumber="135">Darcythompsonia</emphasis>
</taxonomicName>
), and sexual dimorphism in the male caudal ramus of
<taxonomicName id="4C54D3BF1109FF8E9F247916FDBC6563" authorityName="T. Scott" authorityYear="1906" box="[328,518,817,841]" class="Hexanauplia" family="Darcythompsoniidae" genus="Darcythompsonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9F247916FDBC6563" box="[328,518,817,841]" italics="true" pageId="4" pageNumber="135">Darcythompsonia</emphasis>
</taxonomicName>
which is rather cylindrical.
<taxonomicName id="4C54D3BF1109FF8E9D287916FC0F6563" authorityName="Gomez" authorityYear="2000" box="[836,949,817,841]" class="Hexanauplia" family="Darcythompsoniidae" genus="Pabellonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9D287916FC0F6563" box="[836,949,817,841]" italics="true" pageId="4" pageNumber="135">Pabellonia</emphasis>
</taxonomicName>
and
<taxonomicName id="4C54D3BF1109FF8E9D817916FBCB6563" authorityName="Por" authorityYear="1983" box="[1005,1137,817,841]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9D817916FBCB6563" box="[1005,1137,817,841]" italics="true" pageId="4" pageNumber="135">Kristensenia</emphasis>
</taxonomicName>
can be separated from
<taxonomicName id="4C54D3BF1109FF8E9F037976FD976543" authorityName="T. Scott" authorityYear="1906" box="[367,557,849,873]" class="Hexanauplia" family="Darcythompsoniidae" genus="Darcythompsonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9F037976FD976543" box="[367,557,849,873]" italics="true" pageId="4" pageNumber="135">Darcythompsonia</emphasis>
</taxonomicName>
by the sexually dimorphic fan-shaped organ on the second and third male urosomites (present in the latter, absent in the two former species). On the other hand,
<taxonomicName id="4C54D3BF1109FF8E9F1A79B5FD8E6580" authorityName="T. Scott" authorityYear="1906" box="[374,564,914,938]" class="Hexanauplia" family="Darcythompsoniidae" genus="Darcythompsonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9F1A79B5FD8E6580" box="[374,564,914,938]" italics="true" pageId="4" pageNumber="135">Darcythompsonia</emphasis>
</taxonomicName>
and
<taxonomicName id="4C54D3BF1109FF8E9C1D79B5FD4F6580" authorityName="Por" authorityYear="1983" box="[625,757,914,938]" class="Hexanauplia" family="Darcythompsoniidae" genus="Kristensenia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9C1D79B5FD4F6580" box="[625,757,914,938]" italics="true" pageId="4" pageNumber="135">Kristensenia</emphasis>
</taxonomicName>
can be separated from
<taxonomicName id="4C54D3BF1109FF8E9A6779B5FBC66580" authorityName="Gomez" authorityYear="2000" box="[1035,1148,914,938]" class="Hexanauplia" family="Darcythompsoniidae" genus="Pabellonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9A6779B5FBC66580" box="[1035,1148,914,938]" italics="true" pageId="4" pageNumber="135">Pabellonia</emphasis>
</taxonomicName>
by the P5 and P6 (present in both sexes in the two former species, but absent in both sexes in
<taxonomicName id="4C54D3BF1109FF8E9EE679F4FF4165C1" authorityName="Gomez" authorityYear="2000" box="[138,251,979,1003]" class="Hexanauplia" family="Darcythompsoniidae" genus="Pabellonia" kingdom="Animalia" order="Harpacticoida" pageId="4" pageNumber="135" phylum="Arthropoda" rank="genus">
<emphasis id="B920742E1109FF8E9EE679F4FF4165C1" box="[138,251,979,1003]" italics="true" pageId="4" pageNumber="135">Pabellonia</emphasis>
</taxonomicName>
).
</paragraph>
</subSubSection>
</treatment>
</document>