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<document id="B0A55412BB3C7DCA827A068DD80734B2" ID-DOI="10.1080/00222933.2011.602805" ID-ISSN="1464-5262" ID-Zenodo-Dep="5204750" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1629067573448" checkinUser="felipe" docAuthor="Minoshima, Yûsuke &amp; Hayashi, Masakazu" docDate="2011" docId="03F587F0FF85FFFBFE59851FFBC546C4" docLanguage="en" docName="JNatHist.45.45-46.2757-2784.pdf" docOrigin="Journal of Natural History 45 (45 - 46)" docSource="http://dx.doi.org/10.1080/00222933.2011.602805" docStyle="DocumentStyle:FCA295E821436EF9307F50C7AC261B53.5:JNatHist.2008-2012.journal_article.1cover" docStyleId="FCA295E821436EF9307F50C7AC261B53" docStyleName="JNatHist.2008-2012.journal_article.1cover" docStyleVersion="5" docTitle="Hydrocassis jengi Sato 1998" docType="treatment" docVersion="3" lastPageNumber="2776" masterDocId="FFCCFF88FF97FFEFFF888168FFFF4408" masterDocTitle="Larval morphology of the genus Hydrocassis Fairmaire (Coleoptera: Hydrophilidae)" masterLastPageNumber="2784" masterPageNumber="2757" pageNumber="2774" updateTime="1699058930039" updateUser="plazi" zenodo-license-document="CLOSED">
<mods:mods id="A890376DAEB613626A536F3ED25BBC51" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="11F31841324BE01C46B77BEE9A6365E3">
<mods:title id="C958B0DE4788D4A39345C469915398B1">Larval morphology of the genus Hydrocassis Fairmaire (Coleoptera: Hydrophilidae)</mods:title>
</mods:titleInfo>
<mods:name id="1229B292549EAE55C89C5F97C1D9205D" type="personal">
<mods:role id="C2FBAE6B66D7DF3D7F1F910983513761">
<mods:roleTerm id="867A0102CB039BEEA6E4CA7BD5545A6E">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="7EF0F7A661F7E456B98719AAE164B8E1">Minoshima, Yûsuke</mods:namePart>
</mods:name>
<mods:name id="91B72B6100842CD3F5BF05144DAAAABE" type="personal">
<mods:role id="3F235C93FB6DE51B07EDCC97B10570E2">
<mods:roleTerm id="32A4F03AB9497AD8FDFAFD0085DCA860">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="A63C8E08C55D9DF3084B47FE6E7C4639">Hayashi, Masakazu</mods:namePart>
</mods:name>
<mods:typeOfResource id="4B7A44EB67D17CF254969C027AE7A4E1">text</mods:typeOfResource>
<mods:relatedItem id="ABA109AE38CE67F742DC8A0C6563294A" type="host">
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<mods:title id="D02B4AA85EB9A9B453C58BDF64344A04">Journal of Natural History</mods:title>
</mods:titleInfo>
<mods:part id="44B2539D335C0A6D1EE4DED68D7DDF85">
<mods:date id="288EAFDC27F6302211B2C864B7F0F654">2011</mods:date>
<mods:detail id="236E4AE2888AA2F1087CF96CAB844FE0" type="pubDate">
<mods:number id="1275C8E2D0F608F4D66570149CD94A29">2011-12-31</mods:number>
</mods:detail>
<mods:detail id="A64062A27288349996A8105E04121DC6" type="volume">
<mods:number id="A950FA94EE57B7164E414A98913E19F0">45</mods:number>
</mods:detail>
<mods:detail id="A1B2071A7D3107F0B373E9E9EABFEA95" type="issue">
<mods:number id="4FDEAC4AFF46DA8273BE874E3762C09D">45 - 46</mods:number>
</mods:detail>
<mods:extent id="042FA5A956DF8AFBFC4887A7333E48D5" unit="page">
<mods:start id="E3616EAAA2BAA4499BD6FDBAB36CBA34">2757</mods:start>
<mods:end id="F9F76EDE05F360CCD0BA43500A39E865">2784</mods:end>
</mods:extent>
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<mods:location id="6D89CD31CC7EAFEEB86E9ECCB27133D6">
<mods:url id="3242F3A4C4A8BAD9E1BCD4DA05C864A8">http://dx.doi.org/10.1080/00222933.2011.602805</mods:url>
</mods:location>
<mods:classification id="6A1ABB4C97161AFB35A0181D8798FA51">journal article</mods:classification>
<mods:identifier id="FA9DAE9AC042F513465162FE7A763DBB" type="DOI">10.1080/00222933.2011.602805</mods:identifier>
<mods:identifier id="F53BCE258F6FF3DF170EE9FC0C45703A" type="ISSN">1464-5262</mods:identifier>
<mods:identifier id="2578CA893887ADC95AB2FF2061DEC5AB" type="Zenodo-Dep">5204750</mods:identifier>
</mods:mods>
<treatment id="03F587F0FF85FFFBFE59851FFBC546C4" LSID="urn:lsid:plazi:treatment:03F587F0FF85FFFBFE59851FFBC546C4" httpUri="http://treatment.plazi.org/id/03F587F0FF85FFFBFE59851FFBC546C4" lastPageId="20" lastPageNumber="2776" pageId="18" pageNumber="2774">
<subSubSection id="C346656DFF85FFFDFE59851FFCF24098" box="[465,781,1143,1168]" pageId="18" pageNumber="2774" type="nomenclature">
<paragraph id="8BE336E6FF85FFFDFE59851FFCF24098" blockId="18.[465,781,1143,1168]" box="[465,781,1143,1168]" pageId="18" pageNumber="2774">
<heading id="D0AB818AFF85FFFDFE59851FFCF24098" box="[465,781,1143,1168]" centered="true" fontSize="36" level="2" pageId="18" pageNumber="2774" reason="7">
<taxonomicName id="4C5C4D65FF85FFFDFE59851FFCF24098" ID-CoL="3N5YD" authority="Sato, 1998" authorityName="Sato" authorityYear="1998" box="[465,781,1143,1168]" class="Insecta" family="Hydrophilidae" genus="Hydrocassis" kingdom="Animalia" order="Coleoptera" pageId="18" pageNumber="2774" phylum="Arthropoda" rank="species" species="jengi">
<emphasis id="B928EAF4FF85FFFDFE59851FFD6D4098" bold="true" box="[465,658,1143,1168]" italics="true" pageId="18" pageNumber="2774">Hydrocassis jengi</emphasis>
Satô, 1998
</taxonomicName>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C346656DFF85FFFBFE6485F5FBC546C4" lastPageId="20" lastPageNumber="2776" pageId="18" pageNumber="2774" type="description">
<paragraph id="8BE336E6FF85FFFDFE6485F5FD0D40BD" blockId="18.[492,754,1181,1205]" box="[492,754,1181,1205]" pageId="18" pageNumber="2774">
<figureCitation id="13672A63FF85FFFDFE6485F5FD9740BD" box="[492,616,1181,1205]" captionStart="Figure 1" captionStartId="4.[143,210,1605,1627]" captionTargetBox="[145,1102,1034,1572]" captionTargetId="figure-445@4.[145,1102,1034,1572]" captionTargetPageId="4" captionText="Figure 1. Habitus of Hydrocassis larvae, dorsal and ventral views. (A) Hydrocassis lacustris Sharp, third instar; (B) Hydrocassis jengi Satô, second instar; (C) Hydrocassis uncinata Ji et Schödl, third instar." figureDoi="http://doi.org/10.5281/zenodo.5204752" httpUri="https://zenodo.org/record/5204752/files/figure.png" pageId="18" pageNumber="2774">Figures 1B</figureCitation>
,
<figureCitation id="13672A63FF85FFFDFDFC85F5FD7B40BD" box="[628,644,1181,1205]" captionStart="Figure 4" captionStartId="7.[211,278,1390,1412]" captionTargetBox="[213,1170,169,1357]" captionTargetId="figure-5@7.[213,1170,169,1357]" captionTargetPageId="7" captionText="Figure 4. Hydrocassis jengi Satô, second instar, dorsal view. (A) Whole larva; (B) head; (C) clypeolabrum; (D) spiracular atrium; (E) tubercular pattern of thoracic and abdominal segments. Abbreviations: T3, metathorax; A1, 2, 6, 7, abdominal segments 1, 2, 6 and 7." figureDoi="http://doi.org/10.5281/zenodo.5204758" httpUri="https://zenodo.org/record/5204758/files/figure.png" pageId="18" pageNumber="2774">4</figureCitation>
,
<figureCitation id="13672A63FF85FFFDFD0785F5FD6140BD" box="[655,670,1181,1205]" captionStart="Figure 5" captionStartId="8.[143,210,1334,1356]" captionTargetBox="[145,1102,167,1301]" captionTargetId="figure-6@8.[145,1102,167,1301]" captionTargetPageId="8" captionText="Figure 5. Head appendages of Hydrocassis jengi Satô, second instar. (A) Right antenna, dorsal view; (B,C) mandibles, dorsal view; (D) right maxilla, dorsal view; (E) right maxilla, ventral view; (F) labium, dorsal view; (G) labium, ventral view. Black square indicates additional sensilla." figureDoi="http://doi.org/10.5281/zenodo.5204761" httpUri="https://zenodo.org/record/5204761/files/figure.png" pageId="18" pageNumber="2774">5</figureCitation>
,
<figureCitation id="13672A63FF85FFFDFD2285F5FD0D40BD" box="[682,754,1181,1205]" captionStart="Figure 12" captionStartId="15.[211,278,817,839]" captionTargetBox="[213,1170,168,784]" captionTargetId="figure-5@15.[213,1170,168,784]" captionTargetPageId="15" captionText="Figure 12. Thoracic structures of Hydrocassis species. (A) Prosternum of Hydrocassis jengi, second instar, ventral view; (B) mesothoracic leg of H. jengi, second instar, anterior view; (C) metathoracic leg of Hydrocassis lacustris, first instar, anterior view; (D) mesothoracic leg of H. lacustris, third instar, anterior view." figureDoi="http://doi.org/10.5281/zenodo.5204775" httpUri="https://zenodo.org/record/5204775/files/figure.png" pageId="18" pageNumber="2774">12A,B</figureCitation>
</paragraph>
<paragraph id="8BE336E6FF85FFFDFF078598FE9E4100" blockId="18.[143,353,1264,1288]" box="[143,353,1264,1288]" pageId="18" pageNumber="2774">
<emphasis id="B928EAF4FF85FFFDFF078598FE9E4100" box="[143,353,1264,1288]" italics="true" pageId="18" pageNumber="2774">Material examined</emphasis>
</paragraph>
<paragraph id="8BE336E6FF85FFFDFF078471FEC541A7" blockId="18.[143,1104,1304,1455]" pageId="18" pageNumber="2774">
<materialsCitation id="3B343CBBFF85FFFDFF078471FF384158" collectingDate="1999-04-30" collectionCode="SEHU" collectorName="Kinsakubaru &amp; Amami-Oshima I." country="Japan" location="Kagoshima pref." pageId="18" pageNumber="2774" specimenCount="1" stateProvince="Kagoshima">
<collectingCountry id="F34B7676FF85FFFDFF078471FF2B4138" box="[143,212,1305,1328]" name="Japan" pageId="18" pageNumber="2774">Japan</collectingCountry>
: 1 L2 (
<collectionCode id="ED4DAE23FF85FFFDFEA48470FE834138" box="[300,380,1304,1328]" pageId="18" pageNumber="2774">SEHU</collectionCode>
),
<collectorName id="26A95330FF85FFFDFE1C8470FDD34138" box="[404,556,1304,1328]" pageId="18" pageNumber="2774">Kinsakubaru</collectorName>
,
<collectorName id="26A95330FF85FFFDFDB38470FCF24138" box="[571,781,1304,1328]" pageId="18" pageNumber="2774">Amami-Ôshima I.</collectorName>
,
<collectingRegion id="4998F804FF85FFFDFC968470FC1E4138" box="[798,993,1304,1328]" country="Japan" name="Kagoshima" pageId="18" pageNumber="2774">Kagoshima pref.</collectingRegion>
,
<date id="FFE21026FF85FFFDFC678470FF384158" pageId="18" pageNumber="2774" value="1999-04-30">
<collectingDate id="EFA6E9CEFF85FFFDFC678470FF384158" pageId="18" pageNumber="2774" value="1999-04-30">30 April 1999</collectingDate>
</date>
</materialsCitation>
,
<materialsCitation id="3B343CBBFF85FFFDFF5C8451FDE64178" collectingDate="1999-05-02" collectionCode="EUMJ" collectorName="Akatsuchi-yama &amp; Uken-son &amp; Amami-Oshima I." country="Japan" location="Kagoshima pref." pageId="18" pageNumber="2774" specimenCount="1" stateProvince="Kagoshima">
no collector data; 1 L2 (
<collectionCode id="ED4DAE23FF85FFFDFE648450FDC14158" box="[492,574,1336,1360]" country="Japan" httpUri="http://grbio.org/cool/0wyw-sfpi" name="Ehime University" pageId="18" pageNumber="2774">EUMJ</collectionCode>
),
<collectorName id="26A95330FF85FFFDFDDB8450FCF04158" box="[595,783,1336,1360]" pageId="18" pageNumber="2774">Akatsuchi-yama</collectorName>
,
<collectorName id="26A95330FF85FFFDFC948450FC724158" box="[796,909,1336,1360]" pageId="18" pageNumber="2774">Uken-son</collectorName>
,
<collectorName id="26A95330FF85FFFDFC128450FF5D4178" pageId="18" pageNumber="2774">Amami-Ôshima I.</collectorName>
,
<collectingRegion id="4998F804FF85FFFDFF3C8430FE874178" box="[180,376,1368,1392]" country="Japan" name="Kagoshima" pageId="18" pageNumber="2774">Kagoshima pref.</collectingRegion>
,
<date id="FFE21026FF85FFFDFE008430FDE64178" box="[392,537,1368,1393]" pageId="18" pageNumber="2774" value="1999-05-02">
<collectingDate id="EFA6E9CEFF85FFFDFE008430FDE64178" box="[392,537,1368,1393]" pageId="18" pageNumber="2774" value="1999-05-02">2 May 1999</collectingDate>
</date>
</materialsCitation>
,
<materialsCitation id="3B343CBBFF85FFFDFDA28431FEC541A7" collectingDate="2008-07-30" collectionCode="SEHU" collectorName="Naon-kawa R. &amp; Yamato-son &amp; Amami-Oshima I. &amp; J. Fujiwara" country="Japan" location="Kagoshima pref." pageId="18" pageNumber="2774" specimenCount="1" stateProvince="Kagoshima">
no collector data.; 1 L2 (
<collectionCode id="ED4DAE23FF85FFFDFCD28430FC554178" box="[858,938,1368,1392]" pageId="18" pageNumber="2774">SEHU</collectionCode>
), upstream of
<collectorName id="26A95330FF85FFFDFF078410FEC14187" box="[143,318,1400,1424]" pageId="18" pageNumber="2774">Naon-kawa R.</collectorName>
,
<collectorName id="26A95330FF85FFFDFED98410FE224187" box="[337,477,1400,1423]" pageId="18" pageNumber="2774">Yamato-son</collectorName>
,
<collectorName id="26A95330FF85FFFDFE678410FD3A4187" box="[495,709,1400,1424]" pageId="18" pageNumber="2774">Amami-Ôshima I.</collectorName>
,
<collectingRegion id="4998F804FF85FFFDFD518410FC614198" box="[729,926,1400,1424]" country="Japan" name="Kagoshima" pageId="18" pageNumber="2774">Kagoshima pref.</collectingRegion>
,
<date id="FFE21026FF85FFFDFC278410FBB44198" box="[943,1099,1400,1424]" pageId="18" pageNumber="2774" value="2008-07-30">
<collectingDate id="EFA6E9CEFF85FFFDFC278410FBB44198" box="[943,1099,1400,1424]" pageId="18" pageNumber="2774" value="2008-07-30">30 July 2008</collectingDate>
</date>
,
<collectorName id="26A95330FF85FFFDFF0784F0FEF341A7" box="[143,268,1431,1455]" pageId="18" pageNumber="2774">J. Fujiwara</collectorName>
leg.
</materialsCitation>
</paragraph>
<paragraph id="8BE336E6FF85FFFDFF078490FD424207" blockId="18.[143,701,1528,1552]" box="[143,701,1528,1552]" pageId="18" pageNumber="2774">
<emphasis id="B928EAF4FF85FFFDFF078490FD424207" box="[143,701,1528,1552]" italics="true" pageId="18" pageNumber="2774">Description of general morphology of second instar</emphasis>
</paragraph>
<paragraph id="8BE336E6FF85FFFDFF078777FD28423F" blockId="18.[143,727,1567,1591]" box="[143,727,1567,1591]" pageId="18" pageNumber="2774">
Slide preparations of
<specimenCount id="9D5AFD6FFF85FFFDFE088748FDDC423F" box="[384,547,1567,1591]" pageId="18" pageNumber="2774" type="generic">two specimens</specimenCount>
were examined.
</paragraph>
<paragraph id="8BE336E6FF85FFFCFF07870AFB784557" blockId="18.[143,1104,1634,1690]" lastBlockId="19.[211,1172,167,351]" lastPageId="19" lastPageNumber="2775" pageId="18" pageNumber="2774">
<emphasis id="B928EAF4FF85FFFDFF07870AFF244272" box="[143,219,1634,1658]" italics="true" pageId="18" pageNumber="2774">Colour</emphasis>
(
<figureCitation id="13672A63FF85FFFDFF64870AFEA04272" box="[236,351,1634,1658]" captionStart="Figure 1" captionStartId="4.[143,210,1605,1627]" captionTargetBox="[145,1102,1034,1572]" captionTargetId="figure-445@4.[145,1102,1034,1572]" captionTargetPageId="4" captionText="Figure 1. Habitus of Hydrocassis larvae, dorsal and ventral views. (A) Hydrocassis lacustris Sharp, third instar; (B) Hydrocassis jengi Satô, second instar; (C) Hydrocassis uncinata Ji et Schödl, third instar." figureDoi="http://doi.org/10.5281/zenodo.5204752" httpUri="https://zenodo.org/record/5204752/files/figure.png" pageId="18" pageNumber="2774">Figure 1B</figureCitation>
). Dorsal surface of head light brown, lighter in median and anterior parts of frontale and around stemmata, with two pairs of dark brown spots medioposteriorly; light brown ventrally. Pronotum light yellowish brown, median portion darkened; meso- and metathoracic terga and abdominal segments light yellowish brown to dark brown, lighter medially and laterally, so looking as two dark longitudinal lines along the body; sclerotized parts darker than median part of abdomen; dorsal sclerite of abdominal segment 8 dark brown in medioposterior part. Ventral surface of thorax and abdomen greyish white to yellowish white, proscutum and legs darkened.
</paragraph>
<paragraph id="8BE336E6FF84FFFCFF5B80FEFE0A4625" blockId="19.[211,1171,406,557]" pageId="19" pageNumber="2775">
<emphasis id="B928EAF4FF84FFFCFF5B80FEFEE845A6" box="[211,279,406,430]" italics="true" pageId="19" pageNumber="2775">Head.</emphasis>
Posterior half to two-thirds of head capsule bearing dense, small but strong tooth-like cuticular projections on dorsal and lateral surfaces behind stemmata (
<figureCitation id="13672A63FF84FFFCFF5380BDFEAA45E5" box="[219,341,469,493]" captionStart="Figure 4" captionStartId="7.[211,278,1390,1412]" captionTargetBox="[213,1170,169,1357]" captionTargetId="figure-5@7.[213,1170,169,1357]" captionTargetPageId="7" captionText="Figure 4. Hydrocassis jengi Satô, second instar, dorsal view. (A) Whole larva; (B) head; (C) clypeolabrum; (D) spiracular atrium; (E) tubercular pattern of thoracic and abdominal segments. Abbreviations: T3, metathorax; A1, 2, 6, 7, abdominal segments 1, 2, 6 and 7." figureDoi="http://doi.org/10.5281/zenodo.5204758" httpUri="https://zenodo.org/record/5204758/files/figure.png" pageId="19" pageNumber="2775">Figure 4B</figureCitation>
). Nasale with four teeth. Epistomal lobes not projecting further than nasale, each lobe with dense, rather short to short spine-like cuticular projections on inner margin (
<figureCitation id="13672A63FF84FFFCFEFA837DFE174625" box="[370,488,533,557]" captionStart="Figure 4" captionStartId="7.[211,278,1390,1412]" captionTargetBox="[213,1170,169,1357]" captionTargetId="figure-5@7.[213,1170,169,1357]" captionTargetPageId="7" captionText="Figure 4. Hydrocassis jengi Satô, second instar, dorsal view. (A) Whole larva; (B) head; (C) clypeolabrum; (D) spiracular atrium; (E) tubercular pattern of thoracic and abdominal segments. Abbreviations: T3, metathorax; A1, 2, 6, 7, abdominal segments 1, 2, 6 and 7." figureDoi="http://doi.org/10.5281/zenodo.5204758" httpUri="https://zenodo.org/record/5204758/files/figure.png" pageId="19" pageNumber="2775">Figure 4C</figureCitation>
).
</paragraph>
<paragraph id="8BE336E6FF84FFFCFF5B830CFC1046D4" blockId="19.[211,1172,612,732]" pageId="19" pageNumber="2775">
<emphasis id="B928EAF4FF84FFFCFF5B830CFECF4674" box="[211,304,612,636]" italics="true" pageId="19" pageNumber="2775">Antenna</emphasis>
(
<figureCitation id="13672A63FF84FFFCFEC9830CFE464674" box="[321,441,612,636]" captionStart="Figure 5" captionStartId="8.[143,210,1334,1356]" captionTargetBox="[145,1102,167,1301]" captionTargetId="figure-6@8.[145,1102,167,1301]" captionTargetPageId="8" captionText="Figure 5. Head appendages of Hydrocassis jengi Satô, second instar. (A) Right antenna, dorsal view; (B,C) mandibles, dorsal view; (D) right maxilla, dorsal view; (E) right maxilla, ventral view; (F) labium, dorsal view; (G) labium, ventral view. Black square indicates additional sensilla." figureDoi="http://doi.org/10.5281/zenodo.5204761" httpUri="https://zenodo.org/record/5204761/files/figure.png" pageId="19" pageNumber="2775">Figure 5A</figureCitation>
). Ventral and lateral surfaces of antennomeres 1 and 2 covered with fine hair-like cuticular projections, the projections on antennomere 2 denser than those on antennomere 1. Antennomere 1 the longest, longer than antennomeres 2 and 3 combined. Antennomere 2 about 0.6 times as long as antennomere 1.
</paragraph>
<paragraph id="8BE336E6FF84FFFCFF5B827BFC6B40E1" blockId="19.[211,1172,786,1257]" pageId="19" pageNumber="2775">
<emphasis id="B928EAF4FF84FFFCFF5B827BFEBB4723" box="[211,324,787,811]" italics="true" pageId="19" pageNumber="2775">Abdomen.</emphasis>
Segment 1 with three transverse rows of tubercles behind the sclerites (
<figureCitation id="13672A63FF84FFFCFF53825AFEB04742" box="[219,335,818,842]" captionStart="Figure 4" captionStartId="7.[211,278,1390,1412]" captionTargetBox="[213,1170,169,1357]" captionTargetId="figure-5@7.[213,1170,169,1357]" captionTargetPageId="7" captionText="Figure 4. Hydrocassis jengi Satô, second instar, dorsal view. (A) Whole larva; (B) head; (C) clypeolabrum; (D) spiracular atrium; (E) tubercular pattern of thoracic and abdominal segments. Abbreviations: T3, metathorax; A1, 2, 6, 7, abdominal segments 1, 2, 6 and 7." figureDoi="http://doi.org/10.5281/zenodo.5204758" httpUri="https://zenodo.org/record/5204758/files/figure.png" pageId="19" pageNumber="2775">Figure 4E</figureCitation>
); the first row with four rather large tubercles on each side, outer one larger than inner three; second row with four tubercles on each side, inner three more closely situated than outer one, the size of the tubercles from median to lateral one,: rather large (L), L, rather L, L; third row with three large tubercles on each side, outer one projecting laterally. Arrangement of tubercles on segments 2 to 5 similar to that on segment 1 but first row with five tubercles, tubercles somewhat larger than those on segment 1: L, rather L, L, L, L. Segment 6 similar to segments 2 to 5 but tubercles of first row smaller than those on segments 2 to 5; inner four rather large, outer one large; outer two closely located. Segment 7 with three transverse rows of tubercles, the first row with five tubercles on each side, outer two closely located: rather L, very small (S) (hardly recognizable, absent on left side in specimen examined this study), rather L, rather L, L; second row with four tubercles, inner three closely located: S, L, very S (hardly recognizable, absent on left side in specimen examined for this study), L; third row with two tubercles each side, outer one projecting laterally.
</paragraph>
<paragraph id="8BE336E6FF84FFFCFF5B8456FD06415D" blockId="19.[211,761,1341,1365]" box="[211,761,1341,1365]" pageId="19" pageNumber="2775">
<emphasis id="B928EAF4FF84FFFCFF5B8456FD06415D" box="[211,761,1341,1365]" italics="true" pageId="19" pageNumber="2775">Description of chaetotaxy of head of second instar</emphasis>
</paragraph>
<paragraph id="8BE336E6FF84FFFCFF5B840DFC7941B4" blockId="19.[211,1172,1381,1468]" pageId="19" pageNumber="2775">
<emphasis id="B928EAF4FF84FFFCFF5B840DFEC84175" box="[211,311,1381,1405]" italics="true" pageId="19" pageNumber="2775">Frontale.</emphasis>
Lateral part bearing numerous rather short secondary setae behind sensilla FR4–6 (e.g.
<figureCitation id="13672A63FF84FFFCFEEA84ECFE274194" box="[354,472,1412,1436]" captionStart="Figure 9" captionStartId="12.[143,210,974,996]" captionTargetBox="[145,1103,169,942]" captionTargetId="figure-6@12.[145,1103,169,942]" captionTargetPageId="12" captionText="Figure 9. Scanning electron micrographs of Hydrocassis lacustris Sharp, third instar, dorsal view. (A) Head; (B) head capsule; (C) head appendages; (D) prothorax and mesothorax." figureDoi="http://doi.org/10.5281/zenodo.5204769" httpUri="https://zenodo.org/record/5204769/files/figure.png" pageId="19" pageNumber="2775">Figure 9B</figureCitation>
). Each epistomal lobe with group of six to seven moderately long setae (gFR2), inner two slightly shorter than outer setae.
</paragraph>
<paragraph id="8BE336E6FF84FFFCFF5B849BFC104203" blockId="19.[211,1007,1523,1548]" box="[211,1007,1523,1548]" pageId="19" pageNumber="2775">
<emphasis id="B928EAF4FF84FFFCFF5B849BFEC24203" box="[211,317,1523,1547]" italics="true" pageId="19" pageNumber="2775">Parietale.</emphasis>
Bearing many secondary sensilla, on dorsal and lateral parts.
</paragraph>
<paragraph id="8BE336E6FF84FFFCFF5B872AFEA34292" blockId="19.[211,1172,1602,1690]" pageId="19" pageNumber="2775">
<emphasis id="B928EAF4FF84FFFCFF5B872AFEC34252" box="[211,316,1602,1626]" italics="true" pageId="19" pageNumber="2775">Mandible</emphasis>
(
<figureCitation id="13672A63FF84FFFCFEC6872AFE164252" box="[334,489,1602,1626]" captionStart="Figure 5" captionStartId="8.[143,210,1334,1356]" captionTargetBox="[145,1102,167,1301]" captionTargetId="figure-6@8.[145,1102,167,1301]" captionTargetPageId="8" captionText="Figure 5. Head appendages of Hydrocassis jengi Satô, second instar. (A) Right antenna, dorsal view; (B,C) mandibles, dorsal view; (D) right maxilla, dorsal view; (E) right maxilla, ventral view; (F) labium, dorsal view; (G) labium, ventral view. Black square indicates additional sensilla." figureDoi="http://doi.org/10.5281/zenodo.5204761" httpUri="https://zenodo.org/record/5204761/files/figure.png" pageId="19" pageNumber="2775">Figure 5B, C</figureCitation>
). With several small secondary setae on lateral part; basal part of mandible with seven rather short secondary setae, three on dorsal, four on ventral face.
</paragraph>
<paragraph id="8BE336E6FF83FFFBFF0781C0FDFF44D7" blockId="20.[143,1104,167,224]" pageId="20" pageNumber="2776">
<emphasis id="B928EAF4FF83FFFBFF0781C0FF1744C8" box="[143,232,168,192]" italics="true" pageId="20" pageNumber="2776">Maxilla</emphasis>
(
<figureCitation id="13672A63FF83FFFBFF7F81CFFE7144B7" box="[247,398,167,191]" captionStart="Figure 5" captionStartId="8.[143,210,1334,1356]" captionTargetBox="[145,1102,167,1301]" captionTargetId="figure-6@8.[145,1102,167,1301]" captionTargetPageId="8" captionText="Figure 5. Head appendages of Hydrocassis jengi Satô, second instar. (A) Right antenna, dorsal view; (B,C) mandibles, dorsal view; (D) right maxilla, dorsal view; (E) right maxilla, ventral view; (F) labium, dorsal view; (G) labium, ventral view. Black square indicates additional sensilla." figureDoi="http://doi.org/10.5281/zenodo.5204761" httpUri="https://zenodo.org/record/5204761/files/figure.png" pageId="20" pageNumber="2776">Figure 5D, E</figureCitation>
). Stipes with 10–11 long secondary setae on outer face; one of them very long, close to
<collectingCountry id="F34B7676FF83FFFBFE2981AFFE2D44D7" box="[417,466,199,223]" name="Mexico" pageId="20" pageNumber="2776">MX</collectingCountry>
5–6.
</paragraph>
<paragraph id="8BE336E6FF83FFFBFF078060FC0C4548" blockId="20.[143,1103,264,320]" pageId="20" pageNumber="2776">
<emphasis id="B928EAF4FF83FFFBFF078060FF1B4528" box="[143,228,264,288]" italics="true" pageId="20" pageNumber="2776">Labium</emphasis>
(
<figureCitation id="13672A63FF83FFFBFF7A8060FE784528" box="[242,391,264,288]" captionStart="Figure 5" captionStartId="8.[143,210,1334,1356]" captionTargetBox="[145,1102,167,1301]" captionTargetId="figure-6@8.[145,1102,167,1301]" captionTargetPageId="8" captionText="Figure 5. Head appendages of Hydrocassis jengi Satô, second instar. (A) Right antenna, dorsal view; (B,C) mandibles, dorsal view; (D) right maxilla, dorsal view; (E) right maxilla, ventral view; (F) labium, dorsal view; (G) labium, ventral view. Black square indicates additional sensilla." figureDoi="http://doi.org/10.5281/zenodo.5204761" httpUri="https://zenodo.org/record/5204761/files/figure.png" pageId="20" pageNumber="2776">Figure 5F, G</figureCitation>
). Mentum with nine stout secondary setae in each anterolateral corner; a trichoid secondary seta situated ventrally, close to and outside LA4.
</paragraph>
<paragraph id="8BE336E6FF83FFFBFF0780EEFF194596" blockId="20.[143,230,390,414]" box="[143,230,390,414]" pageId="20" pageNumber="2776">
<emphasis id="B928EAF4FF83FFFBFF0780EEFF194596" box="[143,230,390,414]" italics="true" pageId="20" pageNumber="2776">Habitat</emphasis>
</paragraph>
<paragraph id="8BE336E6FF83FFFBFF0780C6FD2745EE" blockId="20.[143,1103,430,486]" pageId="20" pageNumber="2776">Running water. A larva was found in the root of a tree in the bank of a stream (Naonkawa River) (J. Fujiwara, personal communication).</paragraph>
<paragraph id="8BE336E6FF83FFFBFF078344FEDD464C" blockId="20.[143,290,556,580]" box="[143,290,556,580]" pageId="20" pageNumber="2776">
<emphasis id="B928EAF4FF83FFFBFF078344FEDD464C" box="[143,290,556,580]" italics="true" pageId="20" pageNumber="2776">Identification</emphasis>
</paragraph>
<paragraph id="8BE336E6FF83FFFBFF07833CFBC546C4" blockId="20.[143,1104,596,716]" pageId="20" pageNumber="2776">
<taxonomicName id="4C5C4D65FF83FFFBFF07833CFEAC4664" authorityName="Sato" authorityYear="1998" box="[143,339,596,620]" class="Insecta" family="Hydrophilidae" genus="Hydrocassis" kingdom="Animalia" order="Coleoptera" pageId="20" pageNumber="2776" phylum="Arthropoda" rank="species" species="jengi">
<emphasis id="B928EAF4FF83FFFBFF07833CFEAC4664" box="[143,339,596,620]" italics="true" pageId="20" pageNumber="2776">Hydrocassis jengi</emphasis>
</taxonomicName>
is the only species of the genus distributed in the Amami Islands, southeastern
<collectingCountry id="F34B7676FF83FFFBFEAC831DFE964684" box="[292,361,629,652]" name="Japan" pageId="20" pageNumber="2776">Japan</collectingCountry>
. We identified the larval instar by presence or absence of secondary sensilla and comparing the size of their head capsule with those of
<taxonomicName id="4C5C4D65FF83FFFBFC1183FDFBE446A4" box="[921,1051,660,684]" class="Insecta" family="Hydrophilidae" genus="Hydrocassis" kingdom="Animalia" order="Coleoptera" pageId="20" pageNumber="2776" phylum="Arthropoda" rank="species" species="lacustris">
<emphasis id="B928EAF4FF83FFFBFC1183FDFBE446A4" box="[921,1051,660,684]" italics="true" pageId="20" pageNumber="2776">H. lacustris</emphasis>
</taxonomicName>
and
<taxonomicName id="4C5C4D65FF83FFFBFF0783DDFEEE46C4" authorityName="Ji et Schodl" authorityYear="1998" box="[143,273,693,716]" class="Insecta" family="Hydrophilidae" genus="Hydrocassis" kingdom="Animalia" order="Coleoptera" pageId="20" pageNumber="2776" phylum="Arthropoda" rank="species" species="uncinata">
<emphasis id="B928EAF4FF83FFFBFF0783DDFEEE46C4" box="[143,273,693,716]" italics="true" pageId="20" pageNumber="2776">H. uncinata</emphasis>
</taxonomicName>
, of which the larvae and adults of each species are almost the same size.
</paragraph>
</subSubSection>
</treatment>
</document>
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