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<mods:title id="874193B13E950D4E3D41388CC6884230">Taxonomic revision of Agraphydrus Régimbart, 1903 I. China and Taiwan (Coleoptera: Hydrophilidae: Acidocerinae)</mods:title>
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<mods:namePart id="10660C293AA7397734D0EC8E017DC716">Komarek, Albrecht</mods:namePart>
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<treatment id="03E2CA32FFE2FF8113E2FD652BA1FBFD" ID-DOI="http://doi.org/10.5281/zenodo.5998018" ID-GBIF-Taxon="148462603" ID-Zenodo-Dep="5998018" LSID="urn:lsid:plazi:treatment:03E2CA32FFE2FF8113E2FD652BA1FBFD" httpUri="http://treatment.plazi.org/id/03E2CA32FFE2FF8113E2FD652BA1FBFD" lastPageId="67" lastPageNumber="68" pageId="65" pageNumber="66">
<subSubSection id="C35128AFFFE2FF8313E2FD652D51FD69" box="[151,876,692,718]" pageId="65" pageNumber="66" type="nomenclature">
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Key to the species of
<taxonomicName id="4C4B00A7FFE2FF8312E9FD652C07FD69" ID-CoL="8VR7F" authorityName="Komarek &amp; Hebauer" authorityYear="2018" box="[412,570,692,718]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="genus">
<emphasis id="B93FA736FFE2FF8312E9FD652C07FD69" bold="true" box="[412,570,692,718]" italics="true" pageId="65" pageNumber="66">Agraphydrus</emphasis>
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from China and Taiwan
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<paragraph id="8BF47B24FFE2FF8313E2FD2B2BA6FCA8" blockId="65.[151,1437,762,2020]" box="[151,1435,762,783]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FD2B2BA6FCA8" box="[151,1435,762,783]" pageId="65" pageNumber="66">1 Elytra with 9̅10 rows of coarse punctures................................................................. 2</keyLead>
</paragraph>
<paragraph id="8BF47B24FFE2FF8313E2FCC62BA6FC8B" blockId="65.[151,1437,762,2020]" box="[151,1435,791,812]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FCC62BA6FC8B" box="[151,1435,791,812]" pageId="65" pageNumber="66">- Elytra with 4̅6 rows of coarse punctures................................................................. 4</keyLead>
</paragraph>
</keyStep>
<keyStep id="30BF6381FFE2FF8313E2FCE42BA6FC67" pageId="65" pageNumber="66">
<paragraph id="8BF47B24FFE2FF8313E2FCE42BA1FCCF" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FCE42BA1FCCF" pageId="65" pageNumber="66">
2 Antennae with nine antennomeres; coarse punctures on elytra arranged in almost equal rows; pubescence present at least on proximal 2/3 of metafemur (Fig. 87); aedeagus: Fig. 129..............................................
<taxonomicName id="4C4B00A7FFE2FF83164DFC822BA1FCCF" ID-CoL="65SBB" baseAuthorityName="Hansen" baseAuthorityYear="1999" box="[1336,1436,851,872]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="attenuatus">
<emphasis id="B93FA736FFE2FF83164DFC822BA1FCCF" box="[1336,1436,851,872]" italics="true" pageId="65" pageNumber="66">attenuatus</emphasis>
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<paragraph id="8BF47B24FFE2FF8313E2FCA12BA6FC67" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FCA12BA6FC67" pageId="65" pageNumber="66">- Antennae with eight antennomeres; coarse punctures on elytra arranged in four primary rows of closely spaced punctures alternating with four to five secondary rows of widely spaced punctures; pubescence present on proximal half of metafemur (Figs. 106, 112); aedeagus: Figs. 148, 154...................................................................... 3</keyLead>
</paragraph>
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<keyLead id="30BAD811FFE2FF8313E2FC192BA6FC78" box="[151,1435,968,991]" pageId="65" pageNumber="66">
3 Elytral punctures in secondary rows widely spaced (Fig. 28); aedeagus (Fig. 148)...........................
<taxonomicName id="4C4B00A7FFE2FF83164BFC182BA6FC78" ID-CoL="65SBJ" authorityName="Minoshima, Komarek &amp; Ohara" authorityYear="2015" box="[1342,1435,969,991]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="insidiator">
<emphasis id="B93FA736FFE2FF83164BFC182BA6FC78" box="[1342,1435,969,991]" italics="true" pageId="65" pageNumber="66">insidiator</emphasis>
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<keyLead id="30BAD811FFE2FF8313E2FC362BA6FC5B" box="[151,1435,998,1020]" pageId="65" pageNumber="66">
- Elytral punctures in secondary rows closely spaced (Fig. 34); aedeagus (Fig. 154).............................
<taxonomicName id="4C4B00A7FFE2FF83162FFC372BA6FC5B" ID-CoL="3YTPD" authorityName=", M. Hansen" authorityYear="1999" box="[1370,1435,998,1020]" class="Insecta" family="Hydrophilidae" genus="Megagraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="politus">
<emphasis id="B93FA736FFE2FF83162FFC372BA6FC5B" box="[1370,1435,998,1020]" italics="true" pageId="65" pageNumber="66">politus</emphasis>
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<paragraph id="8BF47B24FFE2FF8313E2FBD52BA1FB90" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FBD52BA1FB90" pageId="65" pageNumber="66">
4 Six rows of very distinct, coarse punctures present on elytra, mesal series 1 consisting of few punctures near anterior margin; habitus: Fig. 35; aedeagus: Fig. 155...............................................................
<taxonomicName id="4C4B00A7FFE2FF831646FBF02BA1FB90" ID-CoL="B3BL" baseAuthorityName="Jia" baseAuthorityYear="2010" box="[1331,1436,1057,1079]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="puzhelongi">
<emphasis id="B93FA736FFE2FF831646FBF02BA1FB90" box="[1331,1436,1057,1079]" italics="true" pageId="65" pageNumber="66">puzhelongi</emphasis>
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<paragraph id="8BF47B24FFE2FF8313E2FBEE2BA6FBD6" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FBEE2BA6FBD6" pageId="65" pageNumber="66">- Four rows of distinct or indistinct systematic punctures present on elytra, mesal series 1 present in posterior half, present or absent in anterior half................................................................................. 5</keyLead>
</paragraph>
</keyStep>
<keyStep id="30BF6381FFE2FF8313E2FBA82BA1FAA3" pageId="65" pageNumber="66">
<paragraph id="8BF47B24FFE2FF8313E2FBA82BA6FB0B" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FBA82BA6FB0B" pageId="65" pageNumber="66">5 Anterior margin of clypeus with angulate excision, median notch present (Fig. 47); aedeagus: apex of median lobe indented, parameres with lateral projections (Figs. 125, 127).......................................................... 6</keyLead>
</paragraph>
<paragraph id="8BF47B24FFE2FF8313E2FB652BA1FAA3" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FB652BA1FAA3" pageId="65" pageNumber="66">
- Anterior margin of clypeus with evenly rounded excision, median notch absent (Figs. 48‾53, 55‾67); if median notch present (in some individuals of
<taxonomicName id="4C4B00A7FFE2FF8312B6FB002C0EFB40" ID-CoL="5TSBH" box="[451,563,1233,1255]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="fasciatus">
<emphasis id="B93FA736FFE2FF8312B6FB002C0EFB40" box="[451,563,1233,1255]" italics="true" pageId="65" pageNumber="66">A. fasciatus</emphasis>
</taxonomicName>
, Fig. 54), then apex of median lobe not indented, parameres without projections (Fig. 141).................................................................................................... 7
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<paragraph id="8BF47B24FFE2FF8313E2FADD2BA1FA85" blockId="65.[151,1437,762,2020]" box="[151,1436,1292,1314]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FADD2BA1FA85" box="[151,1436,1292,1314]" pageId="65" pageNumber="66">
6 Aedeagus (Fig. 127): parameres with distinct subapical bulge on lateral margin............................
<taxonomicName id="4C4B00A7FFE2FF83164DFADD2BA1FA85" ID-CoL="5TSBB" authorityName="Komarek &amp; Hebauer" authorityYear="2018" box="[1336,1436,1292,1314]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="anhuianus">
<emphasis id="B93FA736FFE2FF83164DFADD2BA1FA85" box="[1336,1436,1292,1314]" italics="true" pageId="65" pageNumber="66">anhuianus</emphasis>
</taxonomicName>
</keyLead>
</paragraph>
<paragraph id="8BF47B24FFE2FF8313E2FAFB2BA1FAE7" blockId="65.[151,1437,762,2020]" box="[151,1436,1322,1344]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FAFB2BA1FAE7" box="[151,1436,1322,1344]" pageId="65" pageNumber="66">
- Aedeagus (Fig. 125): parameres without subapical bulge on lateral margin...................................
<taxonomicName id="4C4B00A7FFE2FF83162DFAFA2BA1FAE7" ID-CoL="B394" box="[1368,1436,1323,1344]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="activus">
<emphasis id="B93FA736FFE2FF83162DFAFA2BA1FAE7" box="[1368,1436,1323,1344]" italics="true" pageId="65" pageNumber="66">activus</emphasis>
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</paragraph>
</keyStep>
<keyStep id="30BF6381FFE2FF8313E2FA992BA6FA12" pageId="65" pageNumber="66">
<paragraph id="8BF47B24FFE2FF8313E2FA992BA1FADD" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FA992BA1FADD" pageId="65" pageNumber="66">7 Clypeus chagrinate, at least at anterior margin, in some species chagrination restricted to a very narrow seam at anterior margin................................................................................................... 8</keyLead>
</paragraph>
<paragraph id="8BF47B24FFE2FF8313E2FA532BA6FA12" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FA532BA6FA12" pageId="65" pageNumber="66">- Clypeus entirely lacking chagrination, some species with narrow microsculptured seam at lateral margins or in anterolateral corner, but never at anterior margin...................................................................... 25</keyLead>
</paragraph>
</keyStep>
<keyStep id="30BF6381FFE2FF8313E2FA6C2BA6FA48" pageId="65" pageNumber="66">
<paragraph id="8BF47B24FFE2FF8313E2FA6C2BA6FA75" blockId="65.[151,1437,762,2020]" box="[151,1435,1469,1490]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FA6C2BA6FA75" box="[151,1435,1469,1490]" pageId="65" pageNumber="66">8 Maxillary palpomere 4 infuscated apically................................................................ 9</keyLead>
</paragraph>
<paragraph id="8BF47B24FFE2FF8313E2FA0B2BA6FA48" blockId="65.[151,1437,762,2020]" box="[151,1435,1498,1519]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FA0B2BA6FA48" box="[151,1435,1498,1519]" pageId="65" pageNumber="66">- Maxillary palpomere 4 not infuscated apically............................................................ 11</keyLead>
</paragraph>
</keyStep>
<keyStep id="30BF6381FFE2FF8313E2FA292BA6F9C2" pageId="65" pageNumber="66">
<paragraph id="8BF47B24FFE2FF8313E2FA292BA6F98D" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2FA292BA6F98D" pageId="65" pageNumber="66">
9 Ground punctures on pronotum and elytra moderate; aedeagus: corona in basal position of median lobe (Fig. 162)................................................................................................
<taxonomicName id="4C4B00A7FFE2FF83179EF9C52B7AF98D" ID-CoL="B3C6" box="[1259,1351,1556,1578]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="umbrosus">
<emphasis id="B93FA736FFE2FF83179EF9C52B7AF98D" box="[1259,1351,1556,1578]" italics="true" pageId="65" pageNumber="66">umbrosus</emphasis>
</taxonomicName>
(partim)
</keyLead>
</paragraph>
<paragraph id="8BF47B24FFE2FF8313E2F9E32BA6F9C2" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2F9E32BA6F9C2" pageId="65" pageNumber="66">- Ground punctures on pronotum and elytra very fine or moderate; aedeagus: corona situated in midlength of median lobe (Figs. 126, 164).......................................................................................... 10</keyLead>
</paragraph>
</keyStep>
<keyStep id="30BF6381FFE2FF8313E2F9BC2BA1F97C" pageId="65" pageNumber="66">
<paragraph id="8BF47B24FFE2FF8313E2F9BC2BA6F906" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2F9BC2BA6F906" pageId="65" pageNumber="66">
10 Ground punctures on pronotum and elytra very fine, interspaces more than 2× as wide as punctures; aedeagus (Fig. 126): lateral margin of parameres straight.....................................................................
<taxonomicName id="4C4B00A7FFE2FF831613F95A2BA6F906" ID-CoL="B395" box="[1382,1435,1675,1697]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="agilis">
<emphasis id="B93FA736FFE2FF831613F95A2BA6F906" box="[1382,1435,1675,1697]" italics="true" pageId="65" pageNumber="66">agilis</emphasis>
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</keyLead>
</paragraph>
<paragraph id="8BF47B24FFE2FF8313E2F9782BA1F97C" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2F9782BA1F97C" pageId="65" pageNumber="66">
- Ground punctures on pronotum and elytra moderate, interspaces 1‾2× as wide as punctures; aedeagus (
<figureCitation id="137067A1FFE2FF8317B3F9782B26F919" box="[1222,1307,1705,1726]" captionStart="FIGURES 164166" captionStartId="92.[151,264,1688,1711]" captionTargetBox="[263,1324,193,1668]" captionTargetId="figure@92.[263,1324,193,1668]" captionTargetPageId="92" captionText="FIGURES 164166. Aedeagus: 164) A. variabilis; 165) A. wangmiaoi; 166) A. yunnanensis. Scale = 0.1 mm." httpUri="https://zenodo.org/record/1445144/files/figure.png" pageId="65" pageNumber="66">Fig. 164</figureCitation>
): lateral mar- gin of parameres curved.........................................................................
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<keyLead id="30BAD811FFE2FF8313E2F9322BA1F95F" box="[151,1436,1763,1784]" pageId="65" pageNumber="66">11 Clypeus entirely or almost entirely chagrinated, or chagrination restricted to anterior half........................... 12</keyLead>
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<keyLead id="30BAD811FFE2FF8313E2F8D02BA1F8B1" box="[151,1436,1793,1814]" pageId="65" pageNumber="66">- Chagrination of clypeus restricted to a variably extended area on less than anterior half............................ 18</keyLead>
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<keyLead id="30BAD811FFE2FF8313E2F8CF2BA1F8F7" pageId="65" pageNumber="66">12 Pronotum with weak anterolateral chagrination; aedeagus (Figs. 128, 147): apex of parameres inflated, lateral extension absent................................................................................................... 13</keyLead>
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<paragraph id="8BF47B24FFE2FF8313E2F8882BA6F82C" blockId="65.[151,1437,762,2020]" pageId="65" pageNumber="66">
<keyLead id="30BAD811FFE2FF8313E2F8882BA6F82C" pageId="65" pageNumber="66">- Pronotum without anterolateral chagrination; aedeagus (Figs. 137, 146, 157, 159, 162): apex of parameres not inflated, lateral extension present or absent........................................................................... 14</keyLead>
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13 Elytra dark brown, or light brown with a darker sublateral band widening anteriorly; clypeal and elytral ground punctures fine (Fig. 4); aedeagus: Fig. 128........................................................................
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- Elytra unicolored yellowish or ferruginous; clypeal and elytral ground punctures moderate (Fig. 27); aedeagus: Fig. 147.....................................................................................................
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14 Pronotal and elytral ground punctation moderate, body length 2.4‾
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; aedeagus: (Figs. 146, 157)................ 15
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- Pronotal and elytral ground punctation very fine to fine, body length 1.8̅
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, rarely larger (some individuals of
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<emphasis id="B93FA736FFE1FF801649FF002F3DFEA2" italics="true" pageId="66" pageNumber="67">A. umbrosus</emphasis>
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may reach
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); aedeagus: (Figs. 137, 159, 162)..................................................... 16
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15 Elytra slightly attenuating from anterior margin to apex (Fig. 26); aedeagus (Fig. 146): parameres with lateral extension................................................................................................
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- Elytra parallel-shaped (Fig. 37); aedeagus (Fig. 157): parameres without extension.........................
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<emphasis id="B93FA736FFE1FF801658FE962BA1FEFA" box="[1325,1436,327,349]" italics="true" pageId="66" pageNumber="67">reticuliceps</emphasis>
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16 Aedeagus (Fig. 137): parameres distinctly connected with base of median lobe by a distinct band-shaped median extension........................................................................................
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<keyLead id="30BAD811FFE1FF8013E2FE4E2BA6FE13" box="[151,1435,415,436]" pageId="66" pageNumber="67">- Aedeagus (Fig. 159, 162): parameres not visibly connected with base of median lobe............................... 17</keyLead>
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17 Aedeagus (Fig. 159): lateral margin of parameres distinctly curving, corona situated in midlength of median lobe....................................................................................................
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- Aedeagus (Fig. 162): lateral margin of parameres weakly curving, corona in basal position of median lobe.
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18 Pronotum largely yellow, unicolored or with small mesal infuscation; aedeagus (Fig. 132): median lobe distinctly shorter than parameres, basal lobe very short................................................................
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<keyLead id="30BAD811FFE1FF8013E2FD812BA1FD07" pageId="66" pageNumber="67">- Pronotum largely dark brown or black, with narrow yellow lateral margins or with decreasing intensity of coloration towards lateral yellow margins; aedeagus: median lobe not shorter than parameres, basal lobe as long as parameres or slightly shorter.................................................................................................... 19</keyLead>
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<keyLead id="30BAD811FFE1FF8013E2FD792BA6FD19" box="[151,1435,680,702]" pageId="66" pageNumber="67">19 Body strongly attenuating towards elytral apex (Figs. 12, 16), eyes very small (Figs. 50, 51)........................ 20</keyLead>
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20 Aedeagus (Fig. 138): parameres with subapical constriction, apex inflated, corona proximal to midlength of median lobe................................................................................................
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<emphasis id="B93FA736FFE1FF801643FCD32BA6FCB0" box="[1334,1435,770,791]" italics="true" pageId="66" pageNumber="67">contractus</emphasis>
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- Aedeagus (Fig. 136): parameres without subapical constriction, apex not inflated, corona distal to midlength of median lobe.................................................................................................
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21 Aedeagus (Fig. 145): aedeagus very stout, of almost spherical shape......................................
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<keyLead id="30BAD811FFE1FF8013E2FCA62BA6FC2B" box="[151,1435,887,908]" pageId="66" pageNumber="67">- Aedeagus not very stout, not of spherical shape............................................................ 22</keyLead>
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22 Total body length 1.8‾
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; apex of parameres not balloon-shaped (Figs. 137, 143).............................. 23
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23 Aedeagus (Fig. 137): basis of palpomeres connected with basis of median lobe by a distinct band-shaped extension...............................................................................................
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- Aedeagus (Fig. 143): basis of palpomeres not visibly connected with basis of median lobe.....................
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24 Clypeus, pronotum, and elytra black with narrow yellow lateral margins, ground punctures coarse; habitus cylindrical (Fig. 6); body length 2.6-3.0; aedeagus: Fig. 130...............................................................
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- Clypeus dark brown, pronotum dark brown with wide yellow lateral margins, elytra brown with darker sublateral band, ground punctures fine; habitus cylindrical or oval (Fig. 40); body length 2.3-2.8; aedeagus: Fig.160.....................
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<keyLead id="30BAD811FFE1FF8013E2FB4C2BA1FB15" box="[151,1436,1181,1202]" pageId="66" pageNumber="67">25 Metafemur with reduced pubescence, present on proximal half or restricted to anterior margin (Figs. 89, 98, 108, 114).... 26</keyLead>
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<keyLead id="30BAD811FFE1FF8013E2FB6B2BA6FB68" box="[151,1435,1210,1231]" pageId="66" pageNumber="67">- Metafemur pubescent on more than proximal half.......................................................... 29</keyLead>
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<keyLead id="30BAD811FFE1FF8013E2FB092BA6FB4A" box="[151,1435,1240,1261]" pageId="66" pageNumber="67">26 Metafemoral pubescence present on basal half (Figs. 98,114); aedeagus (Figs. 140, 156): phallobase as long as parameres.. 27</keyLead>
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<keyLead id="30BAD811FFE1FF8013E2FB242BA6FA80" pageId="66" pageNumber="67">- Metafemoral pubescence restricted to anterior margin or absent (Figs. 89, 108); aedeagus (Figs. 131, 150): phallobase shorter than parameres...................................................................................... 28</keyLead>
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27 Elytral systematic punctures strongly reduced in number; abdominal ventrite 5 without apical emargination; body length 1.5‾
<quantity id="4CB3D6C1FFE1FF801279FA9F2F65FAC4" box="[268,344,1358,1379]" metricMagnitude="-3" metricUnit="m" metricValue="1.7" pageId="66" pageNumber="67" unit="mm" value="1.7">1.7 mm</quantity>
; aedeagus: Fig. 156...................................................................
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; aedeagus: Fig. 140..................................................................
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28 Antennae nine-segmented; body length 2.2‾3.0 mm; eyes large; abdominal ventrite 5 with apical emargination; aedeagus (Fig. 150): parameres less than 2× as long as basal lobe, corona in basal position, crescentic sclerotized structure present....................................................................................................
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<emphasis id="B93FA736FFE1FF80165EFA312BA1FA51" box="[1323,1436,1504,1526]" italics="true" pageId="66" pageNumber="67">longipalpus</emphasis>
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- Antennae eight-segmented; body length
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; eyes small; abdominal ventrite 5 without apical emargination; aedeagus (Fig. 131): parameres more than 2× as long as basal lobe, corona located distal to midlength of median lobe, shield-shaped sclerotized structure present..............................................................................
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<keyLead id="30BAD811FFE1FF8013E2F9872BA6F9CC" box="[151,1435,1622,1643]" pageId="66" pageNumber="67">29 Maxillary palpomere 4 apically infuscated; elytra widening posterior of midlength (Figs. 10, 11, 17, 18, 19, 29, 38)....... 30</keyLead>
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- Maxillary palpomere 4 apically not infuscated; elytra not widening posteriorly (Figs. 9, 21, 22, 24, 31, 32, 33, 41, 43,
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).................................................................................................... 34
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30 Elytra dark brown or black (Fig. 29); aedeagus: Fig. 149...............................................
<taxonomicName id="4C4B00A7FFE1FF80163DF97F2BA1F963" ID-CoL="65SBK" authorityName="Komarek &amp; Hebauer" authorityYear="2018" box="[1352,1436,1710,1732]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="66" pageNumber="67" phylum="Arthropoda" rank="species" species="jilanzhui">
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<keyLead id="30BAD811FFE1FF8013E2F91D2BA1F946" box="[151,1436,1740,1761]" pageId="66" pageNumber="67">- Elytra light brown or yellow (Figs. 10, 11, 17, 18, 19, 38); aedeagus: Figs. 134, 135, 139, 158....................... 31</keyLead>
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31 Aedeagus (Fig. 158): apex of parameres with lateral extensions...........................................
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<keyLead id="30BAD811FFE1FF8013E2F8D92BA1F8BA" box="[151,1436,1800,1821]" pageId="66" pageNumber="67">- Aedeagus (Fig. 134, 135, 139): apex of parameres without extensions.......................................... 32</keyLead>
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32 Aedeagus (Fig. 135): apex of parameres strongly bending mesad........................................
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33 Aedeagus (Fig. 134): apex of parameres attenuating apicad...............................................
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- Aedeagus (Fig. 139): apex of parameres not attenuating apicad..........................................
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34 Body length&gt; 3.0 mm, width&gt;
<quantity id="4CB3D6C1FFE1FF801154F84D2C52F816" box="[545,623,1948,1969]" metricMagnitude="-3" metricUnit="m" metricValue="1.5" pageId="66" pageNumber="67" unit="mm" value="1.5">1.5 mm</quantity>
; clypeus yellow, with or without small central infuscation; eyes slightly protruding (Fig. 43); aedeagus: Fig. 163.....................................................................
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- Body length &lt;3.0 mm, width &lt;
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; clypeus dark brown or black with or without yellow preocular patches; eyes not pro- truding............................................................................................ 35
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<keyLead id="30BAD811FFE0FF8113E2FF642BA6FF6D" box="[151,1435,181,202]" pageId="67" pageNumber="68">35 Antennae with eight antennomeres..................................................................... 36</keyLead>
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<keyLead id="30BAD811FFE0FF8113E2FF032BA6FF40" box="[151,1435,210,231]" pageId="67" pageNumber="68">- Antennae with nine antennomeres...................................................................... 42</keyLead>
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<keyLead id="30BAD811FFE0FF8113E2FF3E2BA6FEA3" box="[151,1435,239,260]" pageId="67" pageNumber="68">36 Abdominal ventrite 5 truncate, apical emargination absent................................................... 37</keyLead>
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<keyLead id="30BAD811FFE0FF8113E2FEDC2BA6FE85" box="[151,1435,269,290]" pageId="67" pageNumber="68">- Abdominal ventrite 5 with apical emargination............................................................ 39</keyLead>
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<keyLead id="30BAD811FFE0FF8113E2FEFB2BA6FEDC" pageId="67" pageNumber="68">37 Body length 2.0 mm; habitus broad (E.I.: 1.3; Figs. 21, 24); eyes small, lateral margin of clypeus 2.5̅2.6× as long as lateral margin of eyes; length ratio palpomeres 4:3 = 1.1‾1.2 (Figs. 72, 73); mesoventrite carinate; metafemoral pubescence present on proximal 2/3̅3/4................................................................................. 38</keyLead>
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- Body length
<quantity id="4CB3D6C1FFE0FF811228FE522F94FE3F" box="[349,425,387,408]" metricMagnitude="-3" metricUnit="m" metricValue="1.7" pageId="67" pageNumber="68" unit="mm" value="1.7">1.7 mm</quantity>
; habitus slender (E.I.: 1.5;
<figureCitation id="137067A1FFE0FF8111D9FE522CCEFE3F" box="[684,755,387,408]" captionStart="FIGURES 4546" captionStartId="81.[151,264,1228,1251]" captionTargetBox="[174,1400,208,1174]" captionTargetId="figure@81.[151,1436,193,1207]" captionTargetPageId="81" captionText="FIGURES 4546. Habitus: 45) A. wangmiaoi; 46) A. yunnanensis. Scale = 1 mm." httpUri="https://zenodo.org/record/1445142/files/figure.png" pageId="67" pageNumber="68">Fig. 45</figureCitation>
); eyes large, lateral margin of clypeus 1.5× as long as lateral margin of eyes; length ratio palpomeres 4:3 = 1.5 (Fig. 81); mesoventrite without carina; metafemoral pubescence present on proximal 4/ 5; aedeagus:
<figureCitation id="137067A1FFE0FF81122BFE6F2F93FE74" box="[350,430,446,467]" captionStart="FIGURES 164166" captionStartId="92.[151,264,1688,1711]" captionTargetBox="[263,1324,193,1668]" captionTargetId="figure@92.[263,1324,193,1668]" captionTargetPageId="92" captionText="FIGURES 164166. Aedeagus: 164) A. variabilis; 165) A. wangmiaoi; 166) A. yunnanensis. Scale = 0.1 mm." httpUri="https://zenodo.org/record/1445144/files/figure.png" pageId="67" pageNumber="68">Fig. 165</figureCitation>
..........................................................................
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38 Maxillary palpi as long as pronotum, slightly shorter than clypeal width; aedeagus: Fig. 144..................
<taxonomicName id="4C4B00A7FFE0FF811641FE0B2BA1FE57" ID-CoL="664BF" authorityName="Komarek &amp; Hebauer" authorityYear="2018" box="[1332,1436,474,496]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="67" pageNumber="68" phylum="Arthropoda" rank="species" species="fujianensis">
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- Maxillary palpi 1.2× as long as pronotum, as long as clypeal width; aedeagus: Fig. 141.................
<taxonomicName id="4C4B00A7FFE0FF811799FE292B7BFDA9" ID-CoL="5TSBH" box="[1260,1350,504,526]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="67" pageNumber="68" phylum="Arthropoda" rank="species" species="fasciatus">
<emphasis id="B93FA736FFE0FF811799FE292B7BFDA9" box="[1260,1350,504,526]" italics="true" pageId="67" pageNumber="68">fasciatus</emphasis>
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<keyLead id="30BAD811FFE0FF8113E2FDC72BA6FDEF" pageId="67" pageNumber="68">39 Eyes small, lateral margin of clypeus 2.4‾2.6× as long as lateral margin of eyes; clypeus 3.8‾3.9× as wide as long; length ratio maxillary palpomere 4:3 = 1.1; mesoventrite with low median carina............................................ 40</keyLead>
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<keyLead id="30BAD811FFE0FF8113E2FD812BA6FD24" pageId="67" pageNumber="68">- Eyes moderate to large, lateral margin of clypeus 1.9× as long as lateral margin of eyes; clypeus 4.8‾5.3× as wide as long; length ratio maxillary palpomere 4:3 = 1.3; mesoventrite without carina......................................... 41</keyLead>
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40 Clypeus with yellow preocular patches; pronotum and elytra brown (Fig. 21); aedeagus: Fig. 141........
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<emphasis id="B93FA736FFE0FF811787FD5A2B7AFD06" box="[1266,1351,651,673]" italics="true" pageId="67" pageNumber="68">fasciatus</emphasis>
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- Clypeus without preocular patches; pronotum and elytra black (Fig. 33); aedeagus: Fig. 153.......................
<taxonomicName id="4C4B00A7FFE0FF81161CFD7B2BA1FD18" ID-CoL="B3B8" box="[1385,1436,682,703]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="67" pageNumber="68" phylum="Arthropoda" rank="species" species="niger">
<emphasis id="B93FA736FFE0FF81161CFD7B2BA1FD18" box="[1385,1436,682,703]" italics="true" pageId="67" pageNumber="68">niger</emphasis>
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41 Aedeagus (
<figureCitation id="137067A1FFE0FF811238FD162F9CFD7B" box="[333,417,711,732]" captionStart="FIGURES 164166" captionStartId="92.[151,264,1688,1711]" captionTargetBox="[263,1324,193,1668]" captionTargetId="figure@92.[263,1324,193,1668]" captionTargetPageId="92" captionText="FIGURES 164166. Aedeagus: 164) A. variabilis; 165) A. wangmiaoi; 166) A. yunnanensis. Scale = 0.1 mm." httpUri="https://zenodo.org/record/1445144/files/figure.png" pageId="67" pageNumber="68">Fig. 166</figureCitation>
): median lobe moderately wide................................................
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<emphasis id="B93FA736FFE0FF811650FD162BA6FD7B" box="[1317,1435,711,732]" italics="true" pageId="67" pageNumber="68">yunnanensis</emphasis>
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- Aedeagus (Fig. 151): median lobe very narrow......................................................
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<emphasis id="B93FA736FFE0FF81164DFD322BA1FD5E" box="[1336,1436,739,761]" italics="true" pageId="67" pageNumber="68">longipenis</emphasis>
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42 Clypeus and pronotum dark yellow mesally, elytral systematic punctures very coarse, mesal row 1 reaching anterior margin, an additional series of coarse punctures present along lateral margin in most individuals; aedeagus: Fig. 142...........
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<keyLead id="30BAD811FFE0FF8113E2FCED2BA6FCC9" pageId="67" pageNumber="68">- Clypeus and pronotum dark brown or black mesally; elytral systematic punctures indistinct or moderately distinct, mesal row 1 not reaching anterior margin, additional lateral series absent................................................... 43</keyLead>
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<keyLead id="30BAD811FFE0FF8113E2FCA62BA6FC0D" pageId="67" pageNumber="68">43 Eyes large, lateral margin of clypeus 1.7‾1.8× as long as lateral margin of eyes; mesoventrite with mesal bulge; abdominal emargination present................................................................................. 44</keyLead>
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- Eyes small, lateral margin of clypeus 3.2× as long as lateral margin of eyes; mesoventrite with low crescentic horizontal ridge; abdominal emargination absent; aedeagus: Fig. 133....................................................
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<emphasis id="B93FA736FFE0FF811637FC1E2BA6FC42" box="[1346,1435,975,997]" italics="true" pageId="67" pageNumber="68">chinensis</emphasis>
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44 Ground punctures on pronotum and elytra fine; maxillary palpi 1.1× as long as pronotum; length ratio palpomeres 4:3 = 1.4 (Fig. 80); aedeagus (Fig. 161): apex of parameres flat without projections..................................
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<emphasis id="B93FA736FFE0FF811648FBDB2BA6FB87" box="[1341,1435,1034,1056]" italics="true" pageId="67" pageNumber="68">splendens</emphasis>
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- Ground punctures on pronotum and elytra moderate; maxillary palpi 0.8× as long as pronotum; length ratio palpomeres 4:3 = 1.1 (Fig. 77); aedeagus (Fig. 152): apex of parameres with two lateral projections...........................
<taxonomicName id="4C4B00A7FFE0FF81164CFB952BA1FBFD" ID-CoL="65SB2" authorityName="Minoshima, Komarek &amp; Ohara" authorityYear="2015" box="[1337,1436,1092,1114]" class="Insecta" family="Hydrophilidae" genus="Agraphydrus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="67" pageNumber="68" phylum="Arthropoda" rank="species" species="masatakai">
<emphasis id="B93FA736FFE0FF81164CFB952BA1FBFD" box="[1337,1436,1092,1114]" italics="true" pageId="67" pageNumber="68">masatakai</emphasis>
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