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<document id="3F0B0DAB07A3A45B35F22CB87C6C360F" ID-DOI="10.1649/0010-065X-64.1.1" ID-ISSN="1938-4394" ID-Zenodo-Dep="4892928" IM.materialsCitations_approvedBy="carolina" IM.metadata_approvedBy="carolina" IM.taxonomicNames_approvedBy="carolina" checkinTime="1622637057541" checkinUser="carolina" docAuthor="Caterino, Michael S." docDate="2010" docId="03A90274FFC801296DC3FD39A23CFEE5" docLanguage="en" docName="TheColeopBull.64.1.1-12.pdf.imf" docOrigin="The Coleopterists Bulletin 64 (1)" docStyle="DocumentStyle:0305A7CAC51C960DDA50A7292A4D3620.8:TheColeopBull.2010-2016.journal_article.0cover" docStyleId="0305A7CAC51C960DDA50A7292A4D3620" docStyleName="TheColeopBull.2010-2016.journal_article.0cover" docStyleVersion="8" docTitle="Margarinotus (Ptomister) umbilicatus" docType="treatment" docVersion="3" lastPageNumber="8" masterDocId="FF907A0CFFCE012E6D21FFB9A043FFB9" masterDocTitle="A Review of California Margarinotus Marseul (Coleoptera: Histeridae: Histerinae: Histerini), with Descriptions of Two New Species" masterLastPageNumber="12" masterPageNumber="1" pageNumber="7" updateTime="1698952771865" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:titleInfo id="8A9763EDEBCDAC538AB52DC0436FD915">
<mods:title id="353DE7B51FEA90C018571846DA556609">A Review of California Margarinotus Marseul (Coleoptera: Histeridae: Histerinae: Histerini), with Descriptions of Two New Species</mods:title>
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<mods:name id="955AF8A84F1FA9B3838A4DB5E1AD0E18" type="personal">
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<mods:namePart id="B74B33CA31F6F25F02F72767038772C0">Caterino, Michael S.</mods:namePart>
<mods:affiliation id="946D2769411BD47039EC1A466E855207">Santa Barbara Museum of Natural History, 2559 Puesta del Sol Rd., Santa Barbara, CA 93105, U. S. A</mods:affiliation>
<mods:nameIdentifier id="146E0030FC47512BFCF4D180AB1B8284" type="email">mcaterino@sbnature2.org</mods:nameIdentifier>
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<mods:title id="F0078BD296D5A6DEB396E934F73329EC">The Coleopterists Bulletin</mods:title>
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<mods:part id="04FC3EBACF0D79C87D5B3A88703FF90C">
<mods:date id="C1BFB28025F913EB9659C7EF934A7E53">2010</mods:date>
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<mods:number id="907131E8B1D50DC0F54E2EB68E7A0E65">2010-03-01</mods:number>
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<mods:detail id="3F52DA3E9195E4CB08C7C83330E7B8CA" type="volume">
<mods:number id="48AA7DAA11905E8C1EE75E122DBCD677">64</mods:number>
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<mods:classification id="AB48D8498BB5ACF98705F8C7D567F4D0">journal article</mods:classification>
<mods:identifier id="D8AF9B23750F096CAB640387563E47C2" type="DOI">10.1649/0010-065X-64.1.1</mods:identifier>
<mods:identifier id="03CDB38CBB616BB97833544D30EBB494" type="ISSN">1938-4394</mods:identifier>
<mods:identifier id="7356725345941B12C3C56308757582D7" type="Zenodo-Dep">4892928</mods:identifier>
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<treatment id="03A90274FFC801296DC3FD39A23CFEE5" LSID="urn:lsid:plazi:treatment:03A90274FFC801296DC3FD39A23CFEE5" httpUri="http://treatment.plazi.org/id/03A90274FFC801296DC3FD39A23CFEE5" lastPageId="7" lastPageNumber="8" pageId="6" pageNumber="7">
<subSubSection id="C31AE0E9FFC801286DC3FD39A27BFD09" pageId="6" pageNumber="7" type="nomenclature">
<paragraph id="8BBFB362FFC801286DC3FD39A27BFD09" blockId="6.[226,605,640,688]" pageId="6" pageNumber="7">
<heading id="D0F7040EFFC801286DC3FD39A27BFD09" centered="true" fontSize="10" level="2" pageId="6" pageNumber="7" reason="2">
<taxonomicName id="4C00C8E1FFC801286DC3FD39A1D5FD09" ID-CoL="7VS67" authority="(Casey, 1893)" baseAuthorityName="Casey" baseAuthorityYear="1893" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus" subGenus="Ptomister">
<emphasis id="B9746F70FFC801286DC3FD39A1D5FD09" bold="true" pageId="6" pageNumber="7">
<emphasis id="B9746F70FFC801286DC3FD39A129FD2C" bold="true" box="[226,362,640,661]" italics="true" pageId="6" pageNumber="7">Margarinotus</emphasis>
(
<emphasis id="B9746F70FFC801286C5DFD39A19AFD2C" bold="true" box="[380,473,640,661]" italics="true" pageId="6" pageNumber="7">Ptomister</emphasis>
)
<emphasis id="B9746F70FFC801286CCAFD39A21EFD2C" bold="true" box="[491,605,640,661]" italics="true" pageId="6" pageNumber="7">umbilicatus</emphasis>
(Casey, 1893)
</emphasis>
</taxonomicName>
(
<figureCitation id="133BAFE7FFC801286C84FD22A25BFD09" box="[421,536,666,688]" captionStart="Fig" captionStartId="6.[197,229,1567,1586]" captionTargetBox="[175,657,1158,1542]" captionTargetId="figure-480@6.[173,660,1091,1544]" captionTargetPageId="6" captionText="Fig. 5. Margarinotus umbilicatus and Margarinotus umbrosus, median lobe of aedeagus. A. M. umbilicatus, dorsal view. B. M. umbilicatus, lateral view. C. M. umbilicatus, apical view of gonopore (variant). D. M. umbilicatus (typical form), apical view of gonopore. E. M. umbrosus, apical view of gonopore. F. M. umbrosus, dorsal view. G. M. umbrosus, lateral view." figureDoi="http://doi.org/10.5281/zenodo.4892946" httpUri="https://zenodo.org/record/4892946/files/figure.png" pageId="6" pageNumber="7">Figs. 5A–D</figureCitation>
,
<figureCitation id="133BAFE7FFC801286F04FD22A272FD09" box="[549,561,667,688]" captionStart="Fig" captionStartId="6.[731,766,778,797]" captionTargetBox="[708,1193,183,754]" captionTargetId="figure-546@6.[707,1194,183,754]" captionTargetPageId="6" captionText="Fig. 6. Map of known California localities for Margarinotus spp." figureDoi="http://doi.org/10.5281/zenodo.4892942" httpUri="https://zenodo.org/record/4892942/files/figure.png" pageId="6" pageNumber="7">6</figureCitation>
)
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C31AE0E9FFC801286D8CFD7CA2D7FD4C" pageId="6" pageNumber="7" type="reference_group">
<paragraph id="8BBFB362FFC801286D8CFD7CA2D7FD4C" blockId="6.[173,660,709,757]" pageId="6" pageNumber="7">
<treatmentCitationGroup id="AB10944CFFC801286D8CFD7CA2D7FD4C" pageId="6" pageNumber="7">
<taxonomicName id="4C00C8E1FFC801286D8CFD7CA24DFD63" authority="Casey 1893: 545" authorityName="Casey" authorityPageNumber="545" authorityYear="1893" box="[173,526,709,730]" class="Insecta" family="Histeridae" genus="Hister" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286D8CFD7CA11DFD63" box="[173,350,709,730]" italics="true" pageId="6" pageNumber="7">Hister umbilicatus</emphasis>
Casey 1893: 545
</taxonomicName>
.
<taxonomicName id="4C00C8E1FFC801286D8CFD59A1A1FD4C" ID-CoL="7VS67" authority="(Casey)" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[173,482,736,757]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286D8CFD59A1D4FD4C" box="[173,407,736,757]" italics="true" pageId="6" pageNumber="7">Margarinotus umbilicatus</emphasis>
(Casey)
</taxonomicName>
;
<treatmentCitation id="0AA19573FFC801286CCAFD59A2D3FD4C" author="Wenzel" box="[491,656,736,757]" page="126" pageId="6" pageNumber="7" year="1944">
<bibRefCitation id="EF91CE93FFC801286CCAFD59A2D3FD4C" author="Wenzel" box="[491,656,736,757]" pageId="6" pageNumber="7" pagination="51 - 151" refId="ref9062" refString="Wenzel, R. L. 1944. On the classification of histerid beetles. Fieldiana, Zoology 28 (2): 51 - 151." type="journal article" year="1944">Wenzel 1944: 126</bibRefCitation>
</treatmentCitation>
.
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<caption id="DF7FE3EAFFC801286FFAFCB3A321FC8C" ID-DOI="http://doi.org/10.5281/zenodo.4892942" ID-Zenodo-Dep="4892942" httpUri="https://zenodo.org/record/4892942/files/figure.png" pageId="6" pageNumber="7" startId="6.[731,766,778,797]" targetBox="[708,1193,183,754]" targetPageId="6">
<paragraph id="8BBFB362FFC801286FFAFCB3A4EAFCA4" blockId="6.[707,1193,778,821]" box="[731,1193,778,797]" pageId="6" pageNumber="7">
<emphasis id="B9746F70FFC801286FFAFCB3A35EFCA4" bold="true" box="[731,797,778,797]" pageId="6" pageNumber="7">Fig. 6.</emphasis>
Map of known California localities for
</paragraph>
<subSubSection id="C31AE0E9FFC801286DE4FCACA42BF99B" pageId="6" pageNumber="7" type="diagnosis">
<paragraph id="8BBFB362FFC801286DE4FCACA42BF99B" blockId="6.[173,659,789,1102]" lastBlockId="6.[707,1194,858,1729]" pageId="6" pageNumber="7">
<emphasis id="B9746F70FFC801286DE4FCACA16EFC93" bold="true" box="[197,301,789,810]" pageId="6" pageNumber="7">Diagnosis.</emphasis>
PEL=
<quantity id="4CF81E87FFC801286C54FCACA249FC93" box="[373,522,789,811]" metricMagnitude="-3" metricUnit="m" metricValue="4.145" metricValueMax="4.55" metricValueMin="3.74" pageId="6" pageNumber="7" unit="mm" value="4.145" valueMax="4.55" valueMin="3.74">3.74–4.55 mm</quantity>
; PNW=
<quantity id="4CF81E87FFC801286F7DFCACA142FCFC" metricMagnitude="-3" metricUnit="m" metricValue="2.93" metricValueMax="3.18" metricValueMin="2.68" pageId="6" pageNumber="7" unit="mm" value="2.93" valueMax="3.18" valueMin="2.68">2.68– 3.18 mm</quantity>
.
<taxonomicName id="4C00C8E1FFC801286C28FC89A1A2FCFC" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[265,481,816,837]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B9746F70FFC801286C28FC89A1A2FCFC" box="[265,481,816,837]" italics="true" pageId="6" pageNumber="7">Margarinotus umbrosus</emphasis>
</taxonomicName>
and
<taxonomicName id="4C00C8E1FFC801286F2CFC89A2D0FCFC" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[525,659,816,837]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286F2CFC89A2D0FCFC" box="[525,659,816,837]" italics="true" pageId="6" pageNumber="7">M. umbilicatus</emphasis>
</taxonomicName>
can be separated from most other
<collectingRegion id="49C47D80FFC801286F06FCF3A2D0FCE6" box="[551,659,842,863]" country="United States of America" name="California" pageId="6" pageNumber="7">California</collectingRegion>
<taxonomicName id="4C00C8E1FFC801286D8CFCDCA173FCC3" authorityName="MARSEUL" authorityYear="1853" box="[173,304,869,890]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="genus">
<emphasis id="B9746F70FFC801286D8CFCDCA173FCC3" box="[173,304,869,890]" italics="true" pageId="6" pageNumber="7">Margarinotus</emphasis>
</taxonomicName>
by the marginal pronotal stria, which is generally obsolete in the basal half or more. (This is also true of some individuals of
<taxonomicName id="4C00C8E1FFC801286F24FC23A2CEFC16" baseAuthorityName="J. L. LeConte" baseAuthorityYear="1851" box="[517,653,922,943]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="sexstriatus">
<emphasis id="B9746F70FFC801286F24FC23A2CEFC16" box="[517,653,922,943]" italics="true" pageId="6" pageNumber="7">M. sexstriatus</emphasis>
</taxonomicName>
, which is easily separated by its large size and nearly or fully absent fourth and sutural elytral striae.) These two species share dense, umbilicate propygidial and pygidial punctation, and generally have some denser pronotal punctures along the inner posterior edge of the inner lateral pronotal stria.
<taxonomicName id="4C00C8E1FFC801286F30FB80A37FFCD6" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[529,828,858,1102]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286F30FB80A37FFCD6" box="[529,828,858,1102]" italics="true" pageId="6" pageNumber="7">Margarinotus umbilicatus</emphasis>
</taxonomicName>
can usually be separated from
<taxonomicName id="4C00C8E1FFC8012869AFFCE3A35CFC33" baseAuthorityName="Casey" baseAuthorityYear="1893" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B9746F70FFC8012869AFFCE3A35CFC33" italics="true" pageId="6" pageNumber="7">M. umbrosus</emphasis>
</taxonomicName>
by a more nearly complete outer lateral pronotal stria and denser lateral pronotal punctures. However, the two species cannot always be clearly differentiated, even by genitalia, because of an almost continuous range of variation between them. The median lobe of both species possesses dorsal subapical teeth. In typical
<taxonomicName id="4C00C8E1FFC801286EF4FBADA42DFB90" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[981,1134,1044,1065]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286EF4FBADA42DFB90" box="[981,1134,1044,1065]" italics="true" pageId="6" pageNumber="7">M. umbilicatus</emphasis>
</taxonomicName>
there are two well separated teeth, nearly erect (
<figureCitation id="133BAFE7FFC801286973FB96A4DDFBFD" box="[1106,1182,1071,1092]" captionStart="Fig" captionStartId="6.[197,229,1567,1586]" captionTargetBox="[175,657,1158,1542]" captionTargetId="figure-480@6.[173,660,1091,1544]" captionTargetPageId="6" captionText="Fig. 5. Margarinotus umbilicatus and Margarinotus umbrosus, median lobe of aedeagus. A. M. umbilicatus, dorsal view. B. M. umbilicatus, lateral view. C. M. umbilicatus, apical view of gonopore (variant). D. M. umbilicatus (typical form), apical view of gonopore. E. M. umbrosus, apical view of gonopore. F. M. umbrosus, dorsal view. G. M. umbrosus, lateral view." figureDoi="http://doi.org/10.5281/zenodo.4892946" httpUri="https://zenodo.org/record/4892946/files/figure.png" pageId="6" pageNumber="7">Fig. 5D</figureCitation>
), whereas in typical
<taxonomicName id="4C00C8E1FFC801286E52FBF0A3ADFBE7" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[883,1006,1097,1118]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B9746F70FFC801286E52FBF0A3ADFBE7" box="[883,1006,1097,1118]" italics="true" pageId="6" pageNumber="7">M. umbrosus</emphasis>
</taxonomicName>
there is a trifid process, with a well developed median and relatively weak lateral teeth (
<figureCitation id="133BAFE7FFC801286E5FFBC7A389FB2A" box="[894,970,1150,1171]" captionStart="Fig" captionStartId="6.[197,229,1567,1586]" captionTargetBox="[175,657,1158,1542]" captionTargetId="figure-480@6.[173,660,1091,1544]" captionTargetPageId="6" captionText="Fig. 5. Margarinotus umbilicatus and Margarinotus umbrosus, median lobe of aedeagus. A. M. umbilicatus, dorsal view. B. M. umbilicatus, lateral view. C. M. umbilicatus, apical view of gonopore (variant). D. M. umbilicatus (typical form), apical view of gonopore. E. M. umbrosus, apical view of gonopore. F. M. umbrosus, dorsal view. G. M. umbrosus, lateral view." figureDoi="http://doi.org/10.5281/zenodo.4892946" httpUri="https://zenodo.org/record/4892946/files/figure.png" pageId="6" pageNumber="7">Fig. 5E</figureCitation>
). On the other hand, a broad range of forms bridges these extremes, from basically bifid with a minor median tooth, to a nearly rectangular weakly trifid process (
<figureCitation id="133BAFE7FFC801286970FB77A4DEFB5A" box="[1105,1181,1230,1251]" captionStart="Fig" captionStartId="6.[197,229,1567,1586]" captionTargetBox="[175,657,1158,1542]" captionTargetId="figure-480@6.[173,660,1091,1544]" captionTargetPageId="6" captionText="Fig. 5. Margarinotus umbilicatus and Margarinotus umbrosus, median lobe of aedeagus. A. M. umbilicatus, dorsal view. B. M. umbilicatus, lateral view. C. M. umbilicatus, apical view of gonopore (variant). D. M. umbilicatus (typical form), apical view of gonopore. E. M. umbrosus, apical view of gonopore. F. M. umbrosus, dorsal view. G. M. umbrosus, lateral view." figureDoi="http://doi.org/10.5281/zenodo.4892946" httpUri="https://zenodo.org/record/4892946/files/figure.png" pageId="6" pageNumber="7">Fig. 5C</figureCitation>
), to one with three equally developed teeth. Generally, the
<taxonomicName id="4C00C8E1FFC801286E3FFABAA33DFAA1" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[798,894,1283,1304]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B9746F70FFC801286E3FFABAA33DFAA1" box="[798,894,1283,1304]" italics="true" pageId="6" pageNumber="7">umbrosus</emphasis>
</taxonomicName>
form, with the median tooth the strongest, predominates from the San Francisco Bay area northward, and Wenzel (unpublished) considered this the southern limit of its range. However, numerous individuals of
<taxonomicName id="4C00C8E1FFC801286938FAD7A4EBFA3A" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[1049,1192,1390,1411]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286938FAD7A4EBFA3A" box="[1049,1192,1390,1411]" italics="true" pageId="6" pageNumber="7">M. umbilicatus</emphasis>
</taxonomicName>
throughout its central and southern
<collectingRegion id="49C47D80FFC80128692EFA31A42DFA24" box="[1039,1134,1416,1437]" country="United States of America" name="California" pageId="6" pageNumber="7">California</collectingRegion>
range exhibit a well developed median tooth, or the teeth become largely united into a dentate plate. This is more frequent and well developed in the northern part of its range, and in the San Francisco Bay area the two species may or may not be distinct.
</paragraph>
</subSubSection>
<paragraph id="8BBFB362FFC801286FE2FC9BA321FC8C" blockId="6.[707,1193,778,821]" box="[707,866,802,821]" pageId="6" pageNumber="7">
<taxonomicName id="4C00C8E1FFC801286FE2FC9BA321FC8C" box="[707,866,802,821]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="undetermined">
<emphasis id="B9746F70FFC801286FE2FC9BA37BFC8C" box="[707,824,802,821]" italics="true" pageId="6" pageNumber="7">Margarinotus</emphasis>
spp.
</taxonomicName>
</paragraph>
</caption>
<caption id="DF7FE3EAFFC801286DE4F9A6A243F978" ID-DOI="http://doi.org/10.5281/zenodo.4892946" ID-Zenodo-Dep="4892946" httpUri="https://zenodo.org/record/4892946/files/figure.png" pageId="6" pageNumber="7" startId="6.[197,229,1567,1586]" targetBox="[175,657,1158,1542]" targetPageId="6">
<paragraph id="8BBFB362FFC801286DE4F9A6A243F978" blockId="6.[173,660,1567,1729]" pageId="6" pageNumber="7">
<emphasis id="B9746F70FFC801286DE4F9A6A143F98B" bold="true" box="[197,256,1567,1586]" pageId="6" pageNumber="7">Fig. 5.</emphasis>
<taxonomicName id="4C00C8E1FFC801286C37F9A6A1B0F98B" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[278,499,1567,1586]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286C37F9A6A1B0F98B" box="[278,499,1567,1586]" italics="true" pageId="6" pageNumber="7">Margarinotus umbilicatus</emphasis>
</taxonomicName>
and
<taxonomicName id="4C00C8E1FFC801286F3FF9A6A0BCF9F0" baseAuthorityName="Casey" baseAuthorityYear="1893" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B9746F70FFC801286F3FF9A6A0BCF9F0" italics="true" pageId="6" pageNumber="7">Margarinotus umbrosus</emphasis>
</taxonomicName>
, median lobe of aedeagus. A.
<taxonomicName id="4C00C8E1FFC801286F2CF98FA2CEF9F0" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[525,653,1590,1609]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286F2CF98FA2CEF9F0" box="[525,653,1590,1609]" italics="true" pageId="6" pageNumber="7">M. umbilicatus</emphasis>
</taxonomicName>
, dorsal view. B.
<taxonomicName id="4C00C8E1FFC801286C64F9F7A191F9D8" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[325,466,1614,1633]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286C64F9F7A191F9D8" box="[325,466,1614,1633]" italics="true" pageId="6" pageNumber="7">M. umbilicatus</emphasis>
</taxonomicName>
, lateral view. C.
<taxonomicName id="4C00C8E1FFC801286F5AF9F7A14CF9C0" baseAuthorityName="Casey" baseAuthorityYear="1893" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286F5AF9F7A14CF9C0" italics="true" pageId="6" pageNumber="7">M. umbilicatus</emphasis>
</taxonomicName>
, apical view of gonopore (variant). D.
<taxonomicName id="4C00C8E1FFC801286F77F9DFA0B6F928" baseAuthorityName="Casey" baseAuthorityYear="1893" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbilicatus">
<emphasis id="B9746F70FFC801286F77F9DFA0B6F928" italics="true" pageId="6" pageNumber="7">M. umbilicatus</emphasis>
</taxonomicName>
(typical form), apical view of gonopore. E.
<taxonomicName id="4C00C8E1FFC801286F5DF9C7A0BCF910" baseAuthorityName="Casey" baseAuthorityYear="1893" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B9746F70FFC801286F5DF9C7A0BCF910" italics="true" pageId="6" pageNumber="7">M. umbrosus</emphasis>
</taxonomicName>
, apical view of gonopore. F.
<taxonomicName id="4C00C8E1FFC801286CD6F92FA226F910" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[503,613,1686,1705]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B9746F70FFC801286CD6F92FA226F910" box="[503,613,1686,1705]" italics="true" pageId="6" pageNumber="7">M. umbrosus</emphasis>
</taxonomicName>
, dorsal view. G.
<taxonomicName id="4C00C8E1FFC801286C3AF917A1C8F978" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[283,395,1710,1729]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B9746F70FFC801286C3AF917A1C8F978" box="[283,395,1710,1729]" italics="true" pageId="6" pageNumber="7">M. umbrosus</emphasis>
</taxonomicName>
, lateral view.
</paragraph>
</caption>
<subSubSection id="C31AE0E9FFC801286FFAF99EA3A6F978" pageId="6" pageNumber="7" type="discussion">
<paragraph id="8BBFB362FFC801286FFAF99EA3A6F978" blockId="6.[707,1194,858,1729]" pageId="6" pageNumber="7">
<emphasis id="B9746F70FFC801286FFAF99EA37DF985" bold="true" box="[731,830,1575,1596]" pageId="6" pageNumber="7">Remarks.</emphasis>
The majority of specimens of this species have been taken from wood rat nests. In the northern part of the range, where specimens more closely resemble
<taxonomicName id="4C00C8E1FFC801286E95F9CEA47BF935" baseAuthorityName="Casey" baseAuthorityYear="1893" box="[948,1080,1655,1676]" class="Insecta" family="Histeridae" genus="Margarinotus" kingdom="Animalia" order="Coleoptera" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B9746F70FFC801286E95F9CEA47BF935" box="[948,1080,1655,1676]" italics="true" pageId="6" pageNumber="7">M. umbrosus</emphasis>
</taxonomicName>
, generalist records are more common (
<emphasis id="B9746F70FFC801286EEEF92BA3B1F91E" box="[975,1010,1682,1703]" italics="true" pageId="6" pageNumber="7">e.g.</emphasis>
rotting vegetation, dung, etc.) than in the south.
</paragraph>
</subSubSection>
<subSubSection id="C31AE0E9FFC901296D8EFF7BA23CFEE5" pageId="7" pageNumber="8" type="distribution">
<paragraph id="8BBFB362FFC901296D8EFF7BA23CFEE5" blockId="7.[151,639,194,348]" pageId="7" pageNumber="8">
<emphasis id="B9746F70FFC901296D8EFF7BA13CFF6E" bold="true" box="[175,383,194,215]" pageId="7" pageNumber="8">
Distribution (
<figureCitation id="133BAFE7FFC901296C12FF7BA131FF6E" box="[307,370,194,215]" captionStart="Fig" captionStartId="6.[731,766,778,797]" captionTargetBox="[708,1193,183,754]" captionTargetId="figure-546@6.[707,1194,183,754]" captionTargetPageId="6" captionText="Fig. 6. Map of known California localities for Margarinotus spp." figureDoi="http://doi.org/10.5281/zenodo.4892942" httpUri="https://zenodo.org/record/4892942/files/figure.png" pageId="7" pageNumber="8">Fig. 6</figureCitation>
).
</emphasis>
This species was described from Marin County, and
<bibRefCitation id="EF91CE93FFC901296CABFF64A1B6FF4B" author="Fall" box="[394,501,221,242]" pageId="7" pageNumber="8" pagination="1 - 282" refId="ref8742" refString="Fall, H. C. 1901. List of the Coleoptera of southern California, with notes on the habits and distribution and descriptions of new species. Occasional papers of the California Academy of Sciences 8: 1 - 282." type="journal article" year="1901">Fall (1901)</bibRefCitation>
lists only this record. The species occurs throughout central and southern
<collectingRegion id="49C47D80FFC901296DCEFEABA10FFE9E" box="[239,332,274,295]" country="United States of America" name="California" pageId="7" pageNumber="8">California</collectingRegion>
from around Sacramento southward to San Diego. The northernmost definite records are from the Clear Lake region (Lake County).
</paragraph>
</subSubSection>
</treatment>
</document>
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