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<document id="ECBBA27D826395ED0C5258870AC5B7ED" ID-DOI="10.5281/zenodo.186668" ID-GBIF-Dataset="7a3d78ed-d4c6-464b-b8ba-a93844a3cf85" ID-ISSN="1175-5326" ID-Zenodo-Dep="186668" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1461054845132" checkinUser="plazi" docAuthor="Hebauer, Martin Fiká Č Ek Franz &amp; Hansen, Michael" docDate="2009" docId="03B74947FF87FFAE23B2FF52FA644489" docLanguage="en" docName="zt02054p037.pdf" docOrigin="Zootaxa 2054" docStyle="DocumentStyle:890A69B780ED73D6DB8551B71C8AC79E.4:Zootaxa.2009-2012.journal_article" docStyleId="890A69B780ED73D6DB8551B71C8AC79E" docStyleName="Zootaxa.2009-2012.journal_article" docStyleVersion="4" docTitle="Oosternum" docType="key" docVersion="9" lastPageNumber="10" masterDocId="FF8E313FFF8EFFA72325FFC5FFF84011" masterDocTitle="Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group" masterLastPageNumber="37" masterPageNumber="1" pageNumber="10" updateTime="1698580851879" updateUser="plazi">
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<mods:title id="ACE2F7D070C5EC6101F4E645DAF1A033">Taxonomic revision of New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) I. Definition of species groups and revision of the Oosternum aequinoctiale group</mods:title>
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<mods:namePart id="9658D35CDBFC1054F589F898C3279E18">Hebauer, Martin Fiká Č Ek Franz</mods:namePart>
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<mods:date id="4A351FBFA6748851B1C1F1FD8B4F3DDF">2009</mods:date>
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<treatment id="03B74947FF87FFAE23B2FF52FA644489" ID-DOI="http://doi.org/10.5281/zenodo.5680133" ID-GBIF-Taxon="119612912" ID-Zenodo-Dep="5680133" LSID="urn:lsid:plazi:treatment:03B74947FF87FFAE23B2FF52FA644489" httpUri="http://treatment.plazi.org/id/03B74947FF87FFAE23B2FF52FA644489" lastPageNumber="10" pageId="9" pageNumber="10">
<subSubSection id="C304ABDAFF87FFAE23B2FF52FDCA40A0" box="[151,562,151,177]" pageId="9" pageNumber="10" type="nomenclature">
<paragraph id="8BA1F851FF87FFAE23B2FF52FDCA40A0" blockId="9.[151,562,151,177]" box="[151,562,151,177]" pageId="9" pageNumber="10">
<heading id="D0E94F3DFF87FFAE23B2FF52FDCA40A0" bold="true" box="[151,562,151,177]" fontSize="11" level="1" pageId="9" pageNumber="10" reason="1">
<emphasis id="B96A2443FF87FFAE23B2FF52FDCA40A0" bold="true" box="[151,562,151,177]" pageId="9" pageNumber="10">
Key to
<taxonomicName id="4C1E83D2FF87FFAE23D5FF52FE8F40A0" ID-CoL="8VZW9" box="[240,375,151,177]" class="Insecta" family="Hydrophilidae" genus="Oosternum" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="10" phylum="Arthropoda" rank="genus">
<emphasis id="B96A2443FF87FFAE23D5FF52FE8F40A0" bold="true" box="[240,375,151,177]" italics="true" pageId="9" pageNumber="10">Oosternum</emphasis>
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species groups
</emphasis>
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</paragraph>
</subSubSection>
<subSubSection id="C304ABDAFF87FFAE23B2FF24FA644489" pageId="9" pageNumber="10" type="key">
<keyStep id="30EAE0F4FF87FFAE23B2FF24FA634189" pageId="9" pageNumber="10">
<paragraph id="8BA1F851FF87FFAE23B2FF24FA644129" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FF24FA644129" pageId="9" pageNumber="10">
1. Pronotum bearing weak (see
<figureCitation id="1325E4D4FF87FFAE22D8FF24FDB140E9" box="[509,585,225,248]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">
Fig.
<quantity id="4CE655B4FF87FFAE210BFF24FDB140E9" box="[558,585,225,248]" metricMagnitude="-1" metricUnit="m" metricValue="3.302" pageId="9" pageNumber="10" unit="in" value="13.0">13</quantity>
</figureCitation>
in
<bibRefCitation id="EF8F85A0FF87FFAE214CFF24FCFA40E9" author="Smetana" box="[617,770,225,248]" pageId="9" pageNumber="37" refString="Smetana, A. (1978) Revision of the subfamily Sphaeridiinae of America north of Mexico (Coleoptera: Hydrophilidae). Memoirs of the Entomological Society of Canada, 105, 1 - 292." type="journal article" year="1978">Smetana 1978</bibRefCitation>
) to very high longitudinal costae (
<figureCitation id="1325E4D4FF87FFAE2748FF24FB1640E9" box="[1133,1262,225,248]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Figs. 1112</figureCitation>
). Frons between eyes elevated above remaining surface (
<figureCitation id="1325E4D4FF87FFAE2150FEC4FD3E4109" box="[629,710,257,280]" captionStart="FIGURES 27 31" captionStartId="8.[151,269,994,1018]" captionTargetBox="[217,1374,163,979]" captionTargetId="figure@8.[217,1374,163,980]" captionTargetPageId="8" captionText="FIGURES 27 31. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 27, 29: O. sculptum group; 28: O. attacomis group; 30: O. aequinoctiale group; 31: O. sharpi group." httpUri="https://zenodo.org/record/186672/files/figure.png" pageId="9" pageNumber="10">Fig. 27</figureCitation>
). Prosternal plate with large lateral cavities (
<figureCitation id="1325E4D4FF87FFAE2782FEC4FB004109" box="[1191,1272,257,280]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 23</figureCitation>
). Elevated por- tion of metaventrite nearly reaching lateral margins of metaventrite, not pentagonal (
<figureCitation id="1325E4D4FF87FFAE2769FEE4FB654129" box="[1100,1181,289,312]" captionStart="FIGURES 27 31" captionStartId="8.[151,269,994,1018]" captionTargetBox="[217,1374,163,979]" captionTargetId="figure@8.[217,1374,163,980]" captionTargetPageId="8" captionText="FIGURES 27 31. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 27, 29: O. sculptum group; 28: O. attacomis group; 30: O. aequinoctiale group; 31: O. sharpi group." httpUri="https://zenodo.org/record/186672/files/figure.png" pageId="9" pageNumber="10">Fig. 29</figureCitation>
).
<emphasis id="B96A2443FF87FFAE278AFEE4FAAF4129" box="[1199,1367,289,312]" italics="true" pageId="9" pageNumber="10">
.....
<taxonomicName id="4C1E83D2FF87FFAE27F3FEE4FAAF4129" ID-CoL="49T7G" box="[1238,1367,289,312]" class="Insecta" family="Hydrophilidae" genus="Oosternum" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="10" phylum="Arthropoda" rank="species" species="sculptum">O. sculptum</taxonomicName>
</emphasis>
group
</keyLead>
</paragraph>
<paragraph id="8BA1F851FF87FFAE23B2FE84FA634189" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FE84FA634189" pageId="9" pageNumber="10">
- Pronotum evenly convex, without any trace of longitudinal costae. Interocular portion of frons not elevated (
<figureCitation id="1325E4D4FF87FFAE2654FE84FF1D4169" captionStart="FIGURES 27 31" captionStartId="8.[151,269,994,1018]" captionTargetBox="[217,1374,163,979]" captionTargetId="figure@8.[217,1374,163,980]" captionTargetPageId="8" captionText="FIGURES 27 31. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 27, 29: O. sculptum group; 28: O. attacomis group; 30: O. aequinoctiale group; 31: O. sharpi group." httpUri="https://zenodo.org/record/186672/files/figure.png" pageId="9" pageNumber="10">Fig. 28</figureCitation>
). Prosternal plate without deep lateral cavities (
<figureCitation id="1325E4D4FF87FFAE21CFFEA4FC974169" box="[746,879,353,376]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Figs. 2426</figureCitation>
). Elevated portion of metaventrite pentagonal, con- fined to median portion of the metaventrite (
<figureCitation id="1325E4D4FF87FFAE2185FE44FCD84189" box="[672,800,385,408]" captionStart="FIGURES 27 31" captionStartId="8.[151,269,994,1018]" captionTargetBox="[217,1374,163,979]" captionTargetId="figure@8.[217,1374,163,980]" captionTargetPageId="8" captionText="FIGURES 27 31. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 27, 29: O. sculptum group; 28: O. attacomis group; 30: O. aequinoctiale group; 31: O. sharpi group." httpUri="https://zenodo.org/record/186672/files/figure.png" pageId="9" pageNumber="10">Figs. 3031</figureCitation>
) .......................................................................................... 2
</keyLead>
</paragraph>
</keyStep>
<keyStep id="30EAE0F4FF87FFAE23B2FE64FA6341E9" pageId="9" pageNumber="10">
<paragraph id="8BA1F851FF87FFAE23B2FE64FA6441C9" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FE64FA6441C9" pageId="9" pageNumber="10">
2. Elytral series 10 short but present, situated anteriorly between series 9 and elytral margin (
<figureCitation id="1325E4D4FF87FFAE27A9FE64FB2041A9" box="[1164,1240,417,440]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 17</figureCitation>
) ........................... .......................................................................................................................................................
<taxonomicName id="4C1E83D2FF87FFAE27ECFE04FAA041C9" ID-CoL="49T7M" box="[1225,1368,449,472]" class="Insecta" family="Hydrophilidae" genus="Oosternum" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="10" phylum="Arthropoda" rank="species" species="soricoides">
<emphasis id="B96A2443FF87FFAE27ECFE04FAA041C9" box="[1225,1368,449,472]" italics="true" pageId="9" pageNumber="10">O. soricoides</emphasis>
</taxonomicName>
group
</keyLead>
</paragraph>
<paragraph id="8BA1F851FF87FFAE23B2FE24FA6341E9" blockId="9.[151,1437,225,1176]" box="[151,1435,481,504]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FE24FA6341E9" box="[151,1435,481,504]" pageId="9" pageNumber="10">
- Elytral series 10 absent (
<figureCitation id="1325E4D4FF87FFAE22EAFE24FDE441E9" box="[463,540,481,504]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 18</figureCitation>
) .................................................................................................................................. 3
</keyLead>
</paragraph>
</keyStep>
<keyStep id="30EAE0F4FF87FFAE23B2FDC4FA634229" pageId="9" pageNumber="10">
<paragraph id="8BA1F851FF87FFAE23B2FDC4FA634209" blockId="9.[151,1437,225,1176]" box="[151,1435,513,536]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FDC4FA634209" box="[151,1435,513,536]" pageId="9" pageNumber="10">
3. Pronotum more convex than elytra (
<figureCitation id="1325E4D4FF87FFAE216CFDC4FD304209" box="[585,712,513,536]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Figs. 1516</figureCitation>
) ....................................................................................................... 4
</keyLead>
</paragraph>
<paragraph id="8BA1F851FF87FFAE23B2FDE4FA634229" blockId="9.[151,1437,225,1176]" box="[151,1435,545,568]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FDE4FA634229" box="[151,1435,545,568]" pageId="9" pageNumber="10">
- Pronotum not more convex than elytra (
<figureCitation id="1325E4D4FF87FFAE2157FDE4FD0C4229" box="[626,756,545,568]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Figs. 1314</figureCitation>
). ................................................................................................. 6
</keyLead>
</paragraph>
</keyStep>
<keyStep id="30EAE0F4FF87FFAE23B2FD84FA6342A9" pageId="9" pageNumber="10">
<paragraph id="8BA1F851FF87FFAE23B2FD84FA6D4269" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FD84FA6D4269" pageId="9" pageNumber="10">
4. Median portion of prosternum at most slightly elevated, weakly demarcated from lateral portions (
<figureCitation id="1325E4D4FF87FFAE27CAFD84FAC74249" box="[1263,1343,577,600]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 24</figureCitation>
). Elytral interval 2 as wide as interval 3 (
<figureCitation id="1325E4D4FF87FFAE2139FDA4FD9F4269" box="[540,615,609,632]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 22</figureCitation>
).....................................................................................................
<emphasis id="B96A2443FF87FFAE2639FDA4FACF4269" box="[1308,1335,609,632]" italics="true" pageId="9" pageNumber="10">O.</emphasis>
group A
</keyLead>
</paragraph>
<paragraph id="8BA1F851FF87FFAE23B2FD44FA6342A9" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FD44FA6342A9" pageId="9" pageNumber="10">
- Median portion of prosternum demarcated from lateral portions by sharp ridges (
<figureCitation id="1325E4D4FF87FFAE2763FD44FB344289" box="[1094,1228,641,664]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Figs. 2526</figureCitation>
). Elytral interval 2 much narrower than interval 3 ...................................................................................................................................... 5
</keyLead>
</paragraph>
</keyStep>
<keyStep id="30EAE0F4FF87FFAE23B2FD04FA6D4329" pageId="9" pageNumber="10">
<paragraph id="8BA1F851FF87FFAE23B2FD04FA6442E9" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FD04FA6442E9" pageId="9" pageNumber="10">
5. Prosternal plate narrow, 1.01.5× wider than long (
<figureCitation id="1325E4D4FF87FFAE21D6FD04FCB642C9" box="[755,846,705,728]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Figs. 26</figureCitation>
, 6671). Median lobe of aedeagus with lateral projec- tions (Figs. 3641) ....................................................................................................................
<taxonomicName id="4C1E83D2FF87FFAE2780FD24FAAF42E9" box="[1189,1367,737,760]" class="Insecta" family="Hydrophilidae" genus="Cryptopleurum" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="10" phylum="Arthropoda" rank="species" species="aequinoctiale">
<emphasis id="B96A2443FF87FFAE2780FD24FAAF42E9" box="[1189,1367,737,760]" italics="true" pageId="9" pageNumber="10">O. aequinoctiale</emphasis>
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group
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</paragraph>
<paragraph id="8BA1F851FF87FFAE23B2FCC4FA6D4329" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FCC4FA6D4329" pageId="9" pageNumber="10">
- Prosternal plate very wide, ca. 2.0× wider than long (as in
<figureCitation id="1325E4D4FF87FFAE201FFCC4FC714309" box="[826,905,769,792]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 25</figureCitation>
). Median lobe of aedeagus without lateral projec- tions ............................................................................................................................................................
<emphasis id="B96A2443FF87FFAE263BFCE4FAC04329" box="[1310,1336,801,824]" italics="true" pageId="9" pageNumber="10">O.</emphasis>
group B
</keyLead>
</paragraph>
</keyStep>
<keyStep id="30EAE0F4FF87FFAE23B2FC84FA634389" pageId="9" pageNumber="10">
<paragraph id="8BA1F851FF87FFAE23B2FC84FA634349" blockId="9.[151,1437,225,1176]" box="[151,1435,833,856]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FC84FA634349" box="[151,1435,833,856]" pageId="9" pageNumber="10">
6. Median portion of prosternum demarcated from lateral parts by sharp ridges (
<figureCitation id="1325E4D4FF87FFAE2727FC84FB7A4349" box="[1026,1154,833,856]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Figs. 2526</figureCitation>
) ...................................... 7
</keyLead>
</paragraph>
<paragraph id="8BA1F851FF87FFAE23B2FCA4FA634389" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FCA4FA634389" pageId="9" pageNumber="10">
- Median part of prosternum at most slightly elevated, not demarcated from lateral portions by sharp ridges (as in
<figureCitation id="1325E4D4FF87FFAE2657FCA4FF1B4389" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 24</figureCitation>
) ................................................................................................................................................................................. 9
</keyLead>
</paragraph>
</keyStep>
<keyStep id="30EAE0F4FF87FFAE23B2FC64FA634409" pageId="9" pageNumber="10">
<paragraph id="8BA1F851FF87FFAE23B2FC64FA6443C9" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FC64FA6443C9" pageId="9" pageNumber="10">
7. Elytral interval 2 slightly narrower than interval 3, quickly narrowing posteriad and not reaching elytral apex (
<figureCitation id="1325E4D4FF87FFAE2654FC64FF1A43C9" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 21</figureCitation>
) ....................................................................................................................................................
<taxonomicName id="4C1E83D2FF87FFAE27F6FC04FAAF43C9" ID-CoL="6SNTW" box="[1235,1367,961,984]" class="Insecta" family="Hydrophilidae" genus="Oosternum" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="10" phylum="Arthropoda" rank="species" species="sahlbergi">
<emphasis id="B96A2443FF87FFAE27F6FC04FAAF43C9" box="[1235,1367,961,984]" italics="true" pageId="9" pageNumber="10">O. sahlbergi</emphasis>
</taxonomicName>
group
</keyLead>
</paragraph>
<paragraph id="8BA1F851FF87FFAE23B2FC24FA634409" blockId="9.[151,1437,225,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FC24FA634409" pageId="9" pageNumber="10">
- Elytral interval much narrower than interval 3, continually narrowing posteriad, reaching elytral apex (
<figureCitation id="1325E4D4FF87FFAE262DFC24FA7243E9" box="[1288,1418,993,1016]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Figs. 1920</figureCitation>
). ...................................................................................................................................................................................... 8
</keyLead>
</paragraph>
</keyStep>
<keyStep id="30EAE0F4FF87FFAE23B2FBE4FA644449" pageId="9" pageNumber="10">
<paragraph id="8BA1F851FF87FFAE23B2FBE4FA644429" blockId="9.[151,1437,225,1176]" box="[151,1436,1057,1080]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FBE4FA644429" box="[151,1436,1057,1080]" pageId="9" pageNumber="10">
8. Prosternal plate ca. as long as wide (as in
<figureCitation id="1325E4D4FF87FFAE21A3FBE4FD2B4429" box="[646,723,1057,1080]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 26</figureCitation>
)...............................................................................
<taxonomicName id="4C1E83D2FF87FFAE27D7FBE4FAAF4429" ID-CoL="49T7J" box="[1266,1367,1057,1080]" class="Insecta" family="Hydrophilidae" genus="Oosternum" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="10" phylum="Arthropoda" rank="species" species="sharpi">
<emphasis id="B96A2443FF87FFAE27D7FBE4FAAF4429" box="[1266,1367,1057,1080]" italics="true" pageId="9" pageNumber="10">O. sharpi</emphasis>
</taxonomicName>
group
</keyLead>
</paragraph>
<paragraph id="8BA1F851FF87FFAE23B2FB84FA644449" blockId="9.[151,1437,225,1176]" box="[151,1436,1089,1112]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FB84FA644449" box="[151,1436,1089,1112]" pageId="9" pageNumber="10">
- Prosternal plate very wide, ca. 2.0× wider than long (
<figureCitation id="1325E4D4FF87FFAE21DAFB84FCB24449" box="[767,842,1089,1112]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 25</figureCitation>
).......................................................
<taxonomicName id="4C1E83D2FF87FFAE27EAFB84FAAF4449" ID-CoL="49T6V" box="[1231,1367,1089,1112]" class="Insecta" family="Hydrophilidae" genus="Oosternum" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="10" phylum="Arthropoda" rank="species" species="attacomis">
<emphasis id="B96A2443FF87FFAE27EAFB84FAAF4449" box="[1231,1367,1089,1112]" italics="true" pageId="9" pageNumber="10">O. attacomis</emphasis>
</taxonomicName>
group
</keyLead>
</paragraph>
</keyStep>
<keyStep id="30EAE0F4FF87FFAE23B2FBA4FA644489" pageId="9" pageNumber="10">
<paragraph id="8BA1F851FF87FFAE23B2FBA4FA644469" blockId="9.[151,1437,225,1176]" box="[151,1436,1121,1144]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FBA4FA644469" box="[151,1436,1121,1144]" pageId="9" pageNumber="10">
9. Elytral interval 2 much narrower than interval 3 (as in
<figureCitation id="1325E4D4FF87FFAE202BFBA4FCA34469" box="[782,859,1121,1144]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 20</figureCitation>
) ...................................................
<taxonomicName id="4C1E83D2FF87FFAE27ECFBA4FAAF4469" ID-CoL="SWBD" box="[1225,1367,1121,1144]" class="Insecta" family="Hydrophilidae" genus="Cercyon" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="10" phylum="Arthropoda" rank="species" species="pubescens">
<emphasis id="B96A2443FF87FFAE27ECFBA4FAAF4469" box="[1225,1367,1121,1144]" italics="true" pageId="9" pageNumber="10">O. pubescens</emphasis>
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group
</keyLead>
</paragraph>
<paragraph id="8BA1F851FF87FFAE23B2FB44FA644489" blockId="9.[151,1437,225,1176]" box="[151,1436,1153,1176]" pageId="9" pageNumber="10">
<keyLead id="30EF5B64FF87FFAE23B2FB44FA644489" box="[151,1436,1153,1176]" pageId="9" pageNumber="10">
- Elytral interval 2 ca. as wide as interval 3 (as in
<figureCitation id="1325E4D4FF87FFAE21EFFB44FCEF4489" box="[714,791,1153,1176]" captionStart="FIGURES 11 26" captionStartId="7.[151,269,1861,1885]" captionTargetBox="[202,1344,187,1835]" captionTargetId="figure@7.[196,1353,183,1836]" captionTargetPageId="7" captionText="FIGURES 11 26. Characters for distinguishing species groups of the genus Oosternum (see Table 1 for details). 11 12, 23: O. sculptum group; 13 14: O. group C; 15 16, 19, 26: O. aequinoctiale group; 17: O. soricoides group; 18, 21: O. sahlbergi group; 20, 25: O. attacomis group; 22, 24: O. group A." httpUri="https://zenodo.org/record/186671/files/figure.png" pageId="9" pageNumber="10">Fig. 22</figureCitation>
)
<emphasis id="B96A2443FF87FFAE203AFB44FAC74489" box="[799,1343,1153,1176]" italics="true" pageId="9" pageNumber="10">............................................................................. O.</emphasis>
group C
</keyLead>
</paragraph>
</keyStep>
</subSubSection>
</treatment>
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