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<document ID-DOI="http://dx.doi.org/10.3897/dez.70.97117" ID-Pensoft-Pub="1860-1324-1-69" ID-Pensoft-UUID="CA0CBE818BFA5DFA80DBD42521D5DBE3" ID-ZooBank="99BBA4C8ED2048879952B61CC25309D4" ModsDocID="1860-1324-70-1-69" checkinTime="1679031804748" checkinUser="pensoft" docAuthor="Tran, Anh Duc, Zettel, Herbert &amp; Sites, Robert W." docDate="2023" docId="17725EC284225516B4290AE146888AE8" docLanguage="en" docName="DeutEntomolZeit 70(1): 69-111" docOrigin="Deutsche Entomologische Zeitschrift 70 (1)" docPubDate="2023-03-16" docSource="http://dx.doi.org/10.3897/dez.70.97117" docTitle="Eotrechus thai Tran &amp; Zettel &amp; Sites 2023, sp. nov." docType="treatment" docUuid="FBCB9AC9-612D-4992-9576-E7534B28029E" docUuidSource="ZooBank" docVersion="1" id="CA0CBE818BFA5DFA80DBD42521D5DBE3" lastPageNumber="69" masterDocId="CA0CBE818BFA5DFA80DBD42521D5DBE3" masterDocTitle="Revision of the genus Eotrechus Kirkaldy (Hemiptera, Heteroptera, Gerridae), with descriptions of six new species" masterLastPageNumber="111" masterPageNumber="69" pageNumber="69" updateTime="1679031804748" updateUser="pensoft">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Revision of the genus Eotrechus Kirkaldy (Hemiptera, Heteroptera, Gerridae), with descriptions of six new species</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Tran, Anh Duc</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-9605-0739</mods:nameIdentifier>
<mods:affiliation>Faculty of Biology, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam</mods:affiliation>
<mods:nameIdentifier type="email">tran.anhduc@hus.edu.vn</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Zettel, Herbert</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-7760-0472</mods:nameIdentifier>
<mods:affiliation>Herbert Zettel, 2 nd Zoological Department (Entomology), Natural History Museum Vienna, Burgring 7, 1010 Vienna, Austria</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Sites, Robert W.</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-3895-813X</mods:nameIdentifier>
<mods:affiliation>Enns Entomology Museum, University of Missouri, Columbia, MO 65211, USA</mods:affiliation>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>Deutsche Entomologische Zeitschrift</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2023</mods:date>
<mods:detail type="pubDate">
<mods:number>2023-03-16</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>70</mods:number>
</mods:detail>
<mods:detail type="issue">
<mods:number>1</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>69</mods:start>
<mods:end>111</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/dez.70.97117</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/dez.70.97117</mods:identifier>
<mods:identifier type="Pensoft-Pub">1860-1324-1-69</mods:identifier>
<mods:identifier type="ZooBank">99BBA4C8ED2048879952B61CC25309D4</mods:identifier>
<mods:identifier type="Pensoft-UUID">CA0CBE818BFA5DFA80DBD42521D5DBE3</mods:identifier>
</mods:mods>
<treatment LSID="urn:lsid:zoobank.org:act:FBCB9AC9-612D-4992-9576-E7534B28029E" httpUri="http://treatment.plazi.org/id/17725EC284225516B4290AE146888AE8" lastPageNumber="69" pageId="0" pageNumber="69">
<subSubSection pageId="0" pageNumber="69" type="nomenclature">
<paragraph pageId="0" pageNumber="69">
<taxonomicName LSID="https://zoobank.org/FBCB9AC9-612D-4992-9576-E7534B28029E" authority="Tran &amp; Zettel &amp; Sites, 2023" authorityName="Tran &amp; Zettel &amp; Sites" authorityYear="2023" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus thai" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="thai" status="sp. nov.">Eotrechus thai</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="69">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="description">
<paragraph pageId="0" pageNumber="69">
<figureCitation captionStart="Figure 11" captionStartId="F11" captionText="Figure 11. Eotrechus thai sp. nov., habitus. A. Apterous male (from Doi Inthanon. Thailand); B. Apterous female (from Doi Inthanon); C. Macropterous female (from Doi Suthep, Thailand)." figureDoi="10.3897/dez.70.97117.figure11" httpUri="https://binary.pensoft.net/fig/826100" pageId="0" pageNumber="69">Figs 11</figureCitation>
<figureCitation captionStart="Figure 12" captionStartId="F12" captionText="Figure 12. Eotrechus thai sp. nov., male genitalia. A. Lateral view; B. Dorsal view; C. Ventral view." figureDoi="10.3897/dez.70.97117.figure12" httpUri="https://binary.pensoft.net/fig/826101" pageId="0" pageNumber="69">, 12</figureCitation>
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. Eotrechus romglao (A, C-E) and E. thai sp. nov. (B, F-I). A, B. Right fore leg, ventral view; C, G. Genital capsule (pygophore and proctiger) of male, lateral view; D, H. Pygophore, dorsal view; E, I. Proctiger, dorsal view; F. Abdominal apex of female, dorsal view (A, B. Same scale; C-E, G-I. Same scale)." figureDoi="10.3897/dez.70.97117.figure13" httpUri="https://binary.pensoft.net/fig/826102" pageId="0" pageNumber="69">, 13B, F-I</figureCitation>
<figureCitation captionStart="Figure 26" captionStartId="F26" captionText="Figure 26. Distribution records of species of Eotrechus. Circles represent E. longipes species group; squares represent E. petraeus species group; stars represent E. vietnamensis species group." figureDoi="10.3897/dez.70.97117.figure26" httpUri="https://binary.pensoft.net/fig/826115" pageId="0" pageNumber="69">, 26</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="reference_group">
<paragraph pageId="0" pageNumber="69">
<taxonomicName authority="Tran &amp; Zettel &amp; Sites, 2023" authorityName="Tran &amp; Zettel &amp; Sites" authorityYear="2023" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus petraeus" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="petraeus" status="sp. nov.">Eotrechus petraeus</taxonomicName>
(non Andersen, 1982):
<bibRefCitation author="Vitheepradit, A" journalOrPublisher="Zootaxa" pageId="0" pageNumber="69" pagination="1 - 19" publicationUrl="https://www.mapress.com/zootaxa/2007f/zt01478p019.pdf" refId="B19" refString="Vitheepradit, A, Sites, RW, 2007. A review of Eotrechus Kirkaldy (Hemiptera: Heteroptera: Gerridae) of Thailand with descriptions of three new species. Zootaxa 1478: 1 - 19, https://www.mapress.com/zootaxa/2007f/zt01478p019.pdf" title="A review of Eotrechus Kirkaldy (Hemiptera: Heteroptera: Gerridae) of Thailand with descriptions of three new species." url="https://www.mapress.com/zootaxa/2007f/zt01478p019.pdf" volume="1478" year="2007">Vitheepradit and Sites (2007</bibRefCitation>
: 16-17, fig. 12);
<bibRefCitation DOI="https://doi.org/10.11646/zootaxa.3860.1.2" author="Nakthong, LA" journalOrPublisher="Zootaxa" pageId="0" pageNumber="69" pagination="47 - 63" refId="B9" refString="Nakthong, LA, Vitheepradit, A, Sites, RW, 2014. Key to the species of Eotrechinae (Hemiptera: Heteroptera: Gerridae) of Thailand and review of the fauna of the Phetchabun mountain range. Zootaxa 3860 (1): 47 - 63, DOI: https://doi.org/10.11646/zootaxa.3860.1.2" title="Key to the species of Eotrechinae (Hemiptera: Heteroptera: Gerridae) of Thailand and review of the fauna of the Phetchabun mountain range." url="https://doi.org/10.11646/zootaxa.3860.1.2" volume="3860" year="2014">Nakthong et al. (2014</bibRefCitation>
: 59, figs 37, 43) (key). Misidentifications.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="materials_examined">
<paragraph pageId="0" pageNumber="69">Material examined.</paragraph>
<paragraph pageId="0" pageNumber="69">
<materialsCitation collectingDate="2002-03-20" collectorName="Sites, Vitheepradit, Kirawanich" country="Thailand" elevation="1060" latitude="18.516666" location="Huay Sai Luang" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" specimenCount="♂" stateProvince="Chiang Mai Province" typeStatus="Holotype">
<emphasis bold="true" italics="true" pageId="0" pageNumber="69">
<typeStatus>Holotype</typeStatus>
</emphasis>
:
<collectingCountry name="Thailand">Thailand</collectingCountry>
•
<specimenCount>♂</specimenCount>
(apterous);
<collectingRegion country="Thailand" name="Chiang Mai">Chiang Mai Province</collectingRegion>
,
<collectingMunicipality>Doi Inthanon National Park</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:17725EC284225516B4290AE146888AE8:9DE39B973BC0BE0F60281AAA0E6CAA03" country="Thailand" latitude="18.516666" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" name="Huay Sai Luang" stateProvince="Chiang Mai Province">Huay Sai Luang</location>
waterfall, with stream;
<geoCoordinate degrees="18" direction="north" minutes="31" orientation="latitude" precision="925" value="18.516666">18°31'N</geoCoordinate>
,
<geoCoordinate degrees="98" direction="east" minutes="27" orientation="longitude" precision="925" value="98.45">98°27'E</geoCoordinate>
;
<elevation metricMagnitude="3" metricUnit="m" metricValue="1.06" unit="m" value="1060.0">
<quantity metricMagnitude="3" metricUnit="m" metricValue="1.06" unit="m" value="1060.0">1060 m</quantity>
a.s.l.
</elevation>
;
<collectingDate value="2002-03-20">20 Mar. 2002</collectingDate>
;
<collectorName>Sites</collectorName>
,
<collectorName>Vitheepradit</collectorName>
,
<collectorName>Kirawanich</collectorName>
leg.; L-311; UMC.
</materialsCitation>
</paragraph>
<paragraph pageId="0" pageNumber="69">
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="Thailand" location="Thailand" specimenCount="9" specimenCount-female="1" specimenCount-male="8" typeStatus="Paratypes">
<emphasis bold="true" italics="true" pageId="0" pageNumber="69">
<typeStatus>Paratypes</typeStatus>
</emphasis>
:
<collectingCountry name="Thailand">Thailand</collectingCountry>
•
<specimenCount type="male">8 ♂♂</specimenCount>
,
<specimenCount type="female">1 ♀</specimenCount>
(apterous); same locality data as for
<typeStatus>holotype</typeStatus>
; UMC
</materialsCitation>
•
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="Thailand" specimenCount="2" specimenCount-female="1" specimenCount-male="1" typeStatus="paratype">
<specimenCount type="male">1 ♂</specimenCount>
,
<specimenCount type="female">1 ♀</specimenCount>
(apterous); same locality data as preceding; ZRC
</materialsCitation>
•
<materialsCitation collectingDate="2002-04-04" collectorName="Sites &amp; Vitheepradit &amp; Kirawanich" country="Thailand" elevation="1060" latitude="18.516666" location="Huay Sai Luang" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="female">1 ♀</specimenCount>
(apterous); same locality as for holotype;
<collectingDate value="2002-04-04">4 Apr. 2002</collectingDate>
; UMC &amp; CMU teams leg.; L-322; UMC
</materialsCitation>
•
<materialsCitation collectingDate="2002-05-08" collectorName="Sites &amp; Vitheepradit &amp; Kirawanich" country="Thailand" elevation="1060" latitude="18.516666" location="Huay Sai Luang" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="female">1 ♀</specimenCount>
(macropterous); same locality as preceding;
<collectingDate value="2002-05-08">8 May 2002</collectingDate>
; UMC &amp; CMU teams leg.; L-396; UMC
</materialsCitation>
•
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" collectorName="Sites &amp; Vitheepradit &amp; Kirawanich" country="Thailand" elevation="1060" latitude="18.516666" location="Huay Sai Luang" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-male="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="male">1 ♂</specimenCount>
(apterous); same locality data as preceding; NHMW
</materialsCitation>
•
<materialsCitation collectingDate="2002-06-09" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" collectorName="Sites &amp; Vitheepradit &amp; Kirawanich" country="Thailand" elevation="1060" latitude="18.516666" location="Huay Sai Luang" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="female">1 ♀</specimenCount>
(apterous); same locality as preceding;
<collectingDate value="2002-06-09">9 Jun. 2002</collectingDate>
; CMU team leg.; UMC
</materialsCitation>
•
<materialsCitation collectingDate="2002-08-11" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" collectorName="Sites &amp; Vitheepradit &amp; Kirawanich" country="Thailand" elevation="1060" latitude="18.516666" location="Huay Sai Luang" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="female">1 ♀</specimenCount>
(macropterous); same locality as preceding;
<collectingDate value="2002-08-11">11 Aug. 2002</collectingDate>
; CMU team leg.; UMC
</materialsCitation>
•
<materialsCitation collectingDate="2003-02-16" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" collectorName="Sites &amp; Vitheepradit &amp; Kirawanich" country="Thailand" elevation="1060" latitude="18.516666" location="Huay Sai Luang" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-male="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="male">1 ♂</specimenCount>
(apterous); same locality as preceding;
<collectingDate value="2003-02-16">16 Feb. 2003</collectingDate>
; CMU team leg.; UMC
</materialsCitation>
•
<materialsCitation collectingDate="2008-12-07" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" collectorName="Sites &amp; Vitheepradit &amp; Kirawanich" country="Thailand" elevation="1060" latitude="18.516666" location="Huay Sai Luang" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="female">1 ♀</specimenCount>
(macropterous); same locality as preceding;
<collectingDate value="2008-12-07">7 Dec. 2008</collectingDate>
; CMU team leg.; UMC
</materialsCitation>
•
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" collectorName="Sites &amp; Vitheepradit &amp; Kirawanich" country="Thailand" elevation="1060" latitude="18.516666" location="Huay Sai Luang" longLatPrecision="1275" longitude="98.45" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="female">1 ♀</specimenCount>
(apterous); same locality data as preceding; NHMW
</materialsCitation>
•
<materialsCitation collectingDate="2002-12-08" country="Thailand" elevation="1460" latitude="18.533333" location="Namtok Siriphum" longLatPrecision="1275" longitude="98.51667" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-male="1" typeStatus="paratype">
<specimenCount type="male">1 ♂</specimenCount>
(apterous);
<collectingMunicipality>Doi Inthanon National Park</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:17725EC284225516B4290AE146888AE8:33C0D4EF3AD1A1AE82E01E19C304AE88" country="Thailand" latitude="18.533333" longLatPrecision="1275" longitude="98.51667" municipality="Doi Inthanon National Park" name="Namtok Siriphum">Namtok Siriphum</location>
;
<geoCoordinate degrees="18" direction="north" minutes="32" orientation="latitude" precision="925" value="18.533333">18°32'N</geoCoordinate>
,
<geoCoordinate degrees="98" direction="east" minutes="31" orientation="longitude" precision="925" value="98.51667">98°31'E</geoCoordinate>
;
<elevation metricMagnitude="3" metricUnit="m" metricValue="1.46" unit="m" value="1460.0">
<quantity metricMagnitude="3" metricUnit="m" metricValue="1.46" unit="m" value="1460.0">1460 m</quantity>
a.s.l.
</elevation>
;
<collectingDate value="2002-12-08">8 Dec. 2002</collectingDate>
; CMU team leg.; UMC
</materialsCitation>
•
<specimenCount type="female">1 ♀</specimenCount>
(apterous),
<materialsCitation collectingDate="2003-01-11" country="Thailand" elevation="1100" latitude="18.8" location="Namtok Sai Yoi" longLatPrecision="1274" longitude="98.916664" municipality="Doi Suthep National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai Province" typeStatus="paratype">
<specimenCount type="female">1 ♀</specimenCount>
(macropterous);
<collectingRegion country="Thailand" name="Chiang Mai">Chiang Mai Province</collectingRegion>
,
<collectingMunicipality>Doi Suthep National Park</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:17725EC284225516B4290AE146888AE8:B3F0652BA7896FCCEF83C217A2212400" country="Thailand" latitude="18.8" longLatPrecision="1274" longitude="98.916664" municipality="Doi Suthep National Park" name="Namtok Sai Yoi" stateProvince="Chiang Mai Province">Namtok Sai Yoi</location>
;
<geoCoordinate degrees="18" direction="north" minutes="48" orientation="latitude" precision="925" value="18.8">18°48'N</geoCoordinate>
,
<geoCoordinate degrees="98" direction="east" minutes="55" orientation="longitude" precision="925" value="98.916664">98°55'E</geoCoordinate>
;
<elevation metricMagnitude="3" metricUnit="m" metricValue="1.1" unit="m" value="1100.0">
<quantity metricMagnitude="3" metricUnit="m" metricValue="1.1" unit="m" value="1100.0">1100 m</quantity>
a.s.l.
</elevation>
;
<collectingDate value="2003-01-11">11 Jan. 2003</collectingDate>
; CMU team leg.; UMC
</materialsCitation>
•
<materialsCitation collectingDate="2002-10-08" country="Thailand" elevation="1100" latitude="18.8" location="Namtok Sai Yoi" longLatPrecision="1274" longitude="98.916664" municipality="Doi Suthep National Park" specimenCount="1" specimenCount-male="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="male">1 ♂</specimenCount>
(macropterous); same locality as preceding;
<collectingDate value="2002-10-08">8 Oct. 2002</collectingDate>
; CMU team leg.; UMC
</materialsCitation>
•
<materialsCitation collectingDate="2002-09-24" country="Thailand" elevation="1100" latitude="18.8" location="Namtok Sai Yoi" longLatPrecision="1274" longitude="98.916664" municipality="Doi Suthep National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai" typeStatus="paratype">
<specimenCount type="female">1 ♀</specimenCount>
(macropterous); same locality as preceding;
<collectingDate value="2002-09-24">24 Sep. 2002</collectingDate>
; CMU team leg.; UMC
</materialsCitation>
•
<specimenCount type="female">1 ♀</specimenCount>
(apterous),
<materialsCitation collectingDate="1995-04-24" collectorName="D. Kovac" country="Thailand" location="Siriphum" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-male="1" stateProvince="Chiang Mai Province" typeStatus="paratype">
<specimenCount type="male">1 ♂</specimenCount>
(macropterous);
<collectingRegion country="Thailand" name="Chiang Mai">Chiang Mai Province</collectingRegion>
,
<collectingMunicipality>Doi Inthanon National Park</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:17725EC284225516B4290AE146888AE8:A5C917ADA19C1CB063FE5B3CE369107C" country="Thailand" municipality="Doi Inthanon National Park" name="Siriphum" stateProvince="Chiang Mai Province">Siriphum</location>
waterfalls;
<collectingDate value="1995-04-24">24 Apr. 1995</collectingDate>
;
<collectorName>D. Kovac</collectorName>
leg.; ZRC.6.19855; ZRC
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="description">
<paragraph pageId="0" pageNumber="69">Description.</paragraph>
<paragraph pageId="0" pageNumber="69">Size: apterous males: length 6.48-6.80 (holotype 6.80), width 1.88-2.12 (holotype 1.96); macropterous male: length 8.40, width 2.12; apterous females: length 7.28-7.76, width 2.16-2.28; macropterous females: length 8.40-8.64, width 2.28-2.32.</paragraph>
<paragraph pageId="0" pageNumber="69">
Colour (Fig.
<figureCitation captionStart="Figure 11" captionStartId="F11" captionText="Figure 11. Eotrechus thai sp. nov., habitus. A. Apterous male (from Doi Inthanon. Thailand); B. Apterous female (from Doi Inthanon); C. Macropterous female (from Doi Suthep, Thailand)." figureDoi="10.3897/dez.70.97117.figure11" httpUri="https://binary.pensoft.net/fig/826100" pageId="0" pageNumber="69">11</figureCitation>
): Dorsum generally dark-brown to black, covered with golden pubescence. Anterolateral sides and posterior margin of head with orange marks. Pronotum with three longitudinal orange stripes, one median and two sublateral, all not reaching posterior margin. Mesonotum mostly orange, with darkened transverse band near middle, deflecting posteriorly as paired, longitudinal, darkened stripes close to midline; posterior half with darker-orange suffusion. Propleuron black, with a longitudinal yellowish-orange stripe behind eye and yellowish area dorsad of black proacetabulum. Mesoacetabulum mostly black and metacetabulum black dorsally and orange ventrally. Proacetabulum, mesopleuron, meso- and metacetabula with patch of reflective silvery pubescence. Antennae brown. All legs chiefly yellowish-brown. Venter of head and prosternum mainly yellowish. Mesosternum mostly yellowish with light-brown suffusion and indistinct median and lateral longitudinal stripes; metasternum varying from yellowish-brown to dark reddish-brown. Abdominal sterna orangish-brown, darker brown dorsally just ventrad of terga.
</paragraph>
<caption doi="10.3897/dez.70.97117.figure11" httpUri="https://binary.pensoft.net/fig/826100" pageId="0" pageNumber="69" start="Figure 11" startId="F11">
<paragraph pageId="0" pageNumber="69">
<emphasis bold="true" pageId="0" pageNumber="69">Figure 11.</emphasis>
<taxonomicName authorityName="Tran &amp; Zettel &amp; Sites" authorityYear="2023" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus thai" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="thai">
<emphasis italics="true" pageId="0" pageNumber="69">Eotrechus thai</emphasis>
</taxonomicName>
sp. nov., habitus.
<emphasis bold="true" pageId="0" pageNumber="69">A.</emphasis>
Apterous male (from Doi Inthanon. Thailand);
<emphasis bold="true" pageId="0" pageNumber="69">B.</emphasis>
Apterous female (from Doi Inthanon);
<emphasis bold="true" pageId="0" pageNumber="69">C.</emphasis>
Macropterous female (from Doi Suthep, Thailand).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="69">
Structural characteristics: Apterous male (holotype): Head width across eyes 1.54; interocular width 0.54; eye kidney-shaped in dorsal view, length of eye 0.73. Antennae 6.56 and subequal to body length, lengths of segments I-IV: 1.60: 1.80: 1.40: 1.76; segment I with four spines subapically. Pronotum broader than long, shorter than head length (0.90: 1.14). Lengths of mesosternum and metasternum: 1.92 and 0.60. Lengths of leg segments (femur: tibia: tarsal segment I: tarsal segment II) as follows: fore leg: 2.56: 2.56: 0.26: 0.36; middle leg: 6.72: 6.64: 0.40: 0.38; hind leg: 6.88: 7.68: 0.32: 0.44. Fore leg (Fig.
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. Eotrechus romglao (A, C-E) and E. thai sp. nov. (B, F-I). A, B. Right fore leg, ventral view; C, G. Genital capsule (pygophore and proctiger) of male, lateral view; D, H. Pygophore, dorsal view; E, I. Proctiger, dorsal view; F. Abdominal apex of female, dorsal view (A, B. Same scale; C-E, G-I. Same scale)." figureDoi="10.3897/dez.70.97117.figure13" httpUri="https://binary.pensoft.net/fig/826102" pageId="0" pageNumber="69">13B</figureCitation>
): trochanter with two long, fine setae; femur incrassate, length ca. 5.4
<normalizedToken originalValue="×">x</normalizedToken>
maximum width (2.56: 0.47), with a large basal tubercle bearing a round, small, tuberculate spot with black, minute setae, then gradually tapering towards apex, along flexor side of femur with a row of seven long stiff setae; tibia almost straight, slightly narrower at distal part, with scattered, stiff setae on extensor side and some shorter stout setae on apical margin; tarsus covered with long, soft, yellowish setae (denser on ventral surface). Middle and hind femora slender and slightly longer than body; middle and hind femora, middle and hind tibiae with scattered, short, brown spines. Claws stout, lengths of fore, mid- and hind claws: 0.12: 0.10: 0.14. Abdomen short, total length of abdominal sterna II-VII: 1.40, sterna II-VI not medially grooved. Sternum VII slightly longer than length of two preceding sterna combined (0.34: 0.44), broadly depressed, posterior margin with a large median notch about as deep as two-fifths of the length of sternum VII (Fig.
<figureCitation captionStart="Figure 12" captionStartId="F12" captionText="Figure 12. Eotrechus thai sp. nov., male genitalia. A. Lateral view; B. Dorsal view; C. Ventral view." figureDoi="10.3897/dez.70.97117.figure12" httpUri="https://binary.pensoft.net/fig/826101" pageId="0" pageNumber="69">12C</figureCitation>
). Genitalia (Figs
<figureCitation captionStart="Figure 12" captionStartId="F12" captionText="Figure 12. Eotrechus thai sp. nov., male genitalia. A. Lateral view; B. Dorsal view; C. Ventral view." figureDoi="10.3897/dez.70.97117.figure12" httpUri="https://binary.pensoft.net/fig/826101" pageId="0" pageNumber="69">12</figureCitation>
,
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. Eotrechus romglao (A, C-E) and E. thai sp. nov. (B, F-I). A, B. Right fore leg, ventral view; C, G. Genital capsule (pygophore and proctiger) of male, lateral view; D, H. Pygophore, dorsal view; E, I. Proctiger, dorsal view; F. Abdominal apex of female, dorsal view (A, B. Same scale; C-E, G-I. Same scale)." figureDoi="10.3897/dez.70.97117.figure13" httpUri="https://binary.pensoft.net/fig/826102" pageId="0" pageNumber="69">13G-I</figureCitation>
): abdominal segment VIII large, ventral side distinctly longer than sternum VII, posterior margin with dense, yellowish setae; pygophore with small lateral tubercles bearing a tuft of yellowish setae, caudal projection triangular, directed dorsad, about as long as main body of pygophore; paramere ovoid; proctiger with lateral tubercle bearing long, brown setae, ventral surface with a patch of brown, brush-like setae.
</paragraph>
<caption doi="10.3897/dez.70.97117.figure12" httpUri="https://binary.pensoft.net/fig/826101" pageId="0" pageNumber="69" start="Figure 12" startId="F12">
<paragraph pageId="0" pageNumber="69">
<emphasis bold="true" pageId="0" pageNumber="69">Figure 12.</emphasis>
<taxonomicName authorityName="Tran &amp; Zettel &amp; Sites" authorityYear="2023" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus thai" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="thai">
<emphasis italics="true" pageId="0" pageNumber="69">Eotrechus thai</emphasis>
</taxonomicName>
sp. nov., male genitalia.
<emphasis bold="true" pageId="0" pageNumber="69">A.</emphasis>
Lateral view;
<emphasis bold="true" pageId="0" pageNumber="69">B.</emphasis>
Dorsal view;
<emphasis bold="true" pageId="0" pageNumber="69">C.</emphasis>
Ventral view.
</paragraph>
</caption>
<caption doi="10.3897/dez.70.97117.figure13" httpUri="https://binary.pensoft.net/fig/826102" pageId="0" pageNumber="69" start="Figure 13" startId="F13">
<paragraph pageId="0" pageNumber="69">
<emphasis bold="true" pageId="0" pageNumber="69">Figure 13.</emphasis>
<taxonomicName authorityName="Vitheepradit &amp; Sites" authorityYear="2007" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus romglao" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="romglao">
<emphasis italics="true" pageId="0" pageNumber="69">Eotrechus romglao</emphasis>
</taxonomicName>
(
<emphasis bold="true" pageId="0" pageNumber="69">A, C-E</emphasis>
) and
<taxonomicName lsidName="E. thai" pageId="0" pageNumber="69" rank="species" species="thai">
<emphasis italics="true" pageId="0" pageNumber="69">E. thai</emphasis>
</taxonomicName>
sp. nov. (
<emphasis bold="true" pageId="0" pageNumber="69">B, F-I</emphasis>
).
<emphasis bold="true" pageId="0" pageNumber="69">A, B.</emphasis>
Right fore leg, ventral view;
<emphasis bold="true" pageId="0" pageNumber="69">C, G.</emphasis>
Genital capsule (pygophore and proctiger) of male, lateral view;
<emphasis bold="true" pageId="0" pageNumber="69">D, H.</emphasis>
Pygophore, dorsal view;
<emphasis bold="true" pageId="0" pageNumber="69">E, I.</emphasis>
Proctiger, dorsal view;
<emphasis bold="true" pageId="0" pageNumber="69">F.</emphasis>
Abdominal apex of female, dorsal view (
<emphasis bold="true" pageId="0" pageNumber="69">A, B.</emphasis>
Same scale;
<emphasis bold="true" pageId="0" pageNumber="69">C-E, G-I.</emphasis>
Same scale).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="69">
Apterous female: Head width across eyes 1.58; interocular width 0.60; eye kidney-shaped in dorsal view, length 0.74. Antennae ca. 0.8
<normalizedToken originalValue="×">x</normalizedToken>
of body length (6.08: 7.28), lengths of segments I-IV: 1.68: 1.48: 1.28: 1.64; segment I with 3 dark spines subapically (other shorter spines apically). Pronotum shorter than head length (0.88: 1.24). Lengths of mesosternum and metasternum: 2.04 and 0.68. Lengths of leg segments (femur: tibia: tarsal segment I: tarsal segment II): fore leg: 2.56: 2.32: 0.26: 0.36; middle leg: 6.72: 6.64: 0.40: 0.42; hind leg: 7.04: 7.84: 0.42: 0.40. Fore trochanter with one long, fine seta on ventral side (seta length subequal to width of trochanter). Fore femur moderately incrassate, length ca. 7.1
<normalizedToken originalValue="×">x</normalizedToken>
maximum width (2.56: 0.36), without tubercle at basal part, moderately thickened at basal part and gradually tapering towards apex, along flexor side with a row 14-15 long, stiff setae, all shorter than greatest width of fore femur. Fore tibia straight, with many long, stout setae on extensor surface and some shorter, stout setae on apical margin. Fore tarsus covered with long, soft, yellowish setae (denser on ventral surface). Middle and hind femora slender and shorter than body length; middle and hind femora, middle and hind tibiae with scattered short, brown spines. Claws stout, lengths of fore, mid- and hind claws: 0.12: 0.16: 0.15. Total length of abdominal sterna II-VII ca. 0.36
<normalizedToken originalValue="×">x</normalizedToken>
body length (2.64: 7.28). Sternum VII 1.2
<normalizedToken originalValue="×">x</normalizedToken>
length of two preceding sterna combined (0.92: 0.76), posterior margin almost straight. Connexival apex of sternum VII truncate, slightly curved mesad, and lateral and ventral surfaces of sternum VII set with a few long, golden setae interspersed by short, golden setae. Genitalia: not concealed by sternum VII; tergum VIII constricted on posterior part then produced posterolaterally; proctiger elongate, with pointed apex and directed caudad (Fig.
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. Eotrechus romglao (A, C-E) and E. thai sp. nov. (B, F-I). A, B. Right fore leg, ventral view; C, G. Genital capsule (pygophore and proctiger) of male, lateral view; D, H. Pygophore, dorsal view; E, I. Proctiger, dorsal view; F. Abdominal apex of female, dorsal view (A, B. Same scale; C-E, G-I. Same scale)." figureDoi="10.3897/dez.70.97117.figure13" httpUri="https://binary.pensoft.net/fig/826102" pageId="0" pageNumber="69">13F</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="69">Macropterous male: Similar to apterous male but with following differences: Pronotum wider, longer, dark reddish-brown, with reddish midline ridge; wings chiefly medium-brown with light-brown patches, reddish-brown veins, four closed cells, and linear series of golden setae, membrane yellowish-brown. Pronotum length (including posterior lobe) 2.88, humeral width 1.80. Fore wing length 5.36.</paragraph>
<paragraph pageId="0" pageNumber="69">Macropterous female: Colouration similar to macropterous male. Pronotum length (including posterior lobe) 2.88, humeral width 1.91. Fore wing length 5.28. Other characteristics similar to apterous female.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="remarks">
<paragraph pageId="0" pageNumber="69">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="69">
Specimens of this new species, collected near the type locality of
<taxonomicName lsidName="E. petraeus" pageId="0" pageNumber="69" rank="species" species="petraeus">
<emphasis italics="true" pageId="0" pageNumber="69">E. petraeus</emphasis>
</taxonomicName>
, were previously determined as
<taxonomicName lsidName="E. petraeus" pageId="0" pageNumber="69" rank="species" species="petraeus">
<emphasis italics="true" pageId="0" pageNumber="69">E. petraeus</emphasis>
</taxonomicName>
by
<bibRefCitation author="Vitheepradit, A" journalOrPublisher="Zootaxa" pageId="0" pageNumber="69" pagination="1 - 19" publicationUrl="https://www.mapress.com/zootaxa/2007f/zt01478p019.pdf" refId="B19" refString="Vitheepradit, A, Sites, RW, 2007. A review of Eotrechus Kirkaldy (Hemiptera: Heteroptera: Gerridae) of Thailand with descriptions of three new species. Zootaxa 1478: 1 - 19, https://www.mapress.com/zootaxa/2007f/zt01478p019.pdf" title="A review of Eotrechus Kirkaldy (Hemiptera: Heteroptera: Gerridae) of Thailand with descriptions of three new species." url="https://www.mapress.com/zootaxa/2007f/zt01478p019.pdf" volume="1478" year="2007">Vitheepradit and Sites (2007)</bibRefCitation>
. The pygophore of this species also has a triangular caudal projection, but it is much shorter than that of
<taxonomicName lsidName="E. petraeus" pageId="0" pageNumber="69" rank="species" species="petraeus">
<emphasis italics="true" pageId="0" pageNumber="69">E. petraeus</emphasis>
</taxonomicName>
.
</paragraph>
<paragraph pageId="0" pageNumber="69">
This new species is more closely related to
<taxonomicName lsidName="E. romglao" pageId="0" pageNumber="69" rank="species" species="romglao">
<emphasis italics="true" pageId="0" pageNumber="69">E. romglao</emphasis>
</taxonomicName>
by sharing similarities in the fore femur of the male (with basal spot of black minute setae), the notched posterior margin of male sternum VII, and the male genitalia (pygophore with a triangular caudal projection, similar shape of proctiger). However, males of
<taxonomicName lsidName="E. thai" pageId="0" pageNumber="69" rank="species" species="thai">
<emphasis italics="true" pageId="0" pageNumber="69">E. thai</emphasis>
</taxonomicName>
sp. nov. can be distinguished from those of
<taxonomicName lsidName="E. romglao" pageId="0" pageNumber="69" rank="species" species="romglao">
<emphasis italics="true" pageId="0" pageNumber="69">E. romglao</emphasis>
</taxonomicName>
by the following: the fore femur has a distinct broad tubercle with a rounded spot of minute, black setae (in
<taxonomicName lsidName="E. romglao" pageId="0" pageNumber="69" rank="species" species="romglao">
<emphasis italics="true" pageId="0" pageNumber="69">E. romglao</emphasis>
</taxonomicName>
: the basal tubercle is indistinct and the spot of minute, black setae is present, but much smaller); the abdominal sternum is not medially grooved (in
<taxonomicName lsidName="E. romglao" pageId="0" pageNumber="69" rank="species" species="romglao">
<emphasis italics="true" pageId="0" pageNumber="69">E. romglao</emphasis>
</taxonomicName>
: it is medially grooved from sterna III-VI); abdominal segment VIII, in ventral view, is longer than sternum VII (in
<taxonomicName lsidName="E. romglao" pageId="0" pageNumber="69" rank="species" species="romglao">
<emphasis italics="true" pageId="0" pageNumber="69">E. romglao</emphasis>
</taxonomicName>
, segment VIII is subequal in length to sternum VII); the lateral tubercles of the pygophore are less developed; the caudal projection of the pygophore is longer and with a pointed apex (in
<taxonomicName lsidName="E. romglao" pageId="0" pageNumber="69" rank="species" species="romglao">
<emphasis italics="true" pageId="0" pageNumber="69">E. romglao</emphasis>
</taxonomicName>
: the lateral tubercles are much more prominent and subtriangular, and the caudal projection is shorter, with a narrowly rounded apex).
</paragraph>
<paragraph pageId="0" pageNumber="69">
Females of these two species are different only in colouration of the venter of the head: in
<taxonomicName lsidName="E. thai" pageId="0" pageNumber="69" rank="species" species="thai">
<emphasis italics="true" pageId="0" pageNumber="69">E. thai</emphasis>
</taxonomicName>
sp. nov., it is mainly yellow, whereas in
<taxonomicName lsidName="E. romglao" pageId="0" pageNumber="69" rank="species" species="romglao">
<emphasis italics="true" pageId="0" pageNumber="69">E. romglao</emphasis>
</taxonomicName>
, it has a pale background with dark-brown markings. Otherwise, females are indistinguishable.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="etymology">
<paragraph pageId="0" pageNumber="69">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="69">The specific epithet is in reference to the country of Thailand and to the warm, friendly Thai people.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="distribution">
<paragraph pageId="0" pageNumber="69">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="69">
Thailand: Chiang Mai (Fig.
<figureCitation captionStart="Figure 26" captionStartId="F26" captionText="Figure 26. Distribution records of species of Eotrechus. Circles represent E. longipes species group; squares represent E. petraeus species group; stars represent E. vietnamensis species group." figureDoi="10.3897/dez.70.97117.figure26" httpUri="https://binary.pensoft.net/fig/826115" pageId="0" pageNumber="69">26</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="69">
<emphasis bold="true" pageId="0" pageNumber="69">
<taxonomicName authorityName="Andersen" authorityYear="1998" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus pingae" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="pingae">
<emphasis italics="true" pageId="0" pageNumber="69">Eotrechus pingae</emphasis>
</taxonomicName>
species group
</emphasis>
</paragraph>
<paragraph pageId="0" pageNumber="69">
<emphasis bold="true" pageId="0" pageNumber="69">Diagnosis.</emphasis>
Male: fore femur with a large basal tubercle, which usually bears a small patch of minute black setae, or produced into a nodule bearing minute black setae, or produced into a pointed tooth-like elevation; posterior margin of sternum VII medially notched, about one-third the length of sternum VII; abdominal segment VIII relatively long; pygophore usually with lateral tubercles bearing long setae; caudal projection of pygophore relatively flat, with broad apical margin; proctiger with angular apex and usually with two posterolateral lobes; lateral or ventral side of proctiger usually bearing long setae. Female: tergum VIII simple; sternum VII about as long as two preceding sterna combined.
</paragraph>
<paragraph pageId="0" pageNumber="69">
<emphasis bold="true" pageId="0" pageNumber="69">Species included.</emphasis>
<taxonomicName lsidName="E. pingae" pageId="0" pageNumber="69" rank="species" species="pingae">
<emphasis italics="true" pageId="0" pageNumber="69">E. pingae</emphasis>
</taxonomicName>
Andersen, 1998,
<taxonomicName lsidName="E. luaae" pageId="0" pageNumber="69" rank="species" species="luaae">
<emphasis italics="true" pageId="0" pageNumber="69">E. luaae</emphasis>
</taxonomicName>
Tran &amp; Zettel, 2006,
<taxonomicName lsidName="E. elongatus" pageId="0" pageNumber="69" rank="species" species="elongatus">
<emphasis italics="true" pageId="0" pageNumber="69">E. elongatus</emphasis>
</taxonomicName>
Vitheepradit &amp; Sites, 2007,
<taxonomicName lsidName="E. fansipan" pageId="0" pageNumber="69" rank="species" species="fansipan">
<emphasis italics="true" pageId="0" pageNumber="69">E. fansipan</emphasis>
</taxonomicName>
J. Polhemus, Tran &amp; D. Polhemus, 2009,
<taxonomicName lsidName="E. siamensis" pageId="0" pageNumber="69" rank="species" species="siamensis">
<emphasis italics="true" pageId="0" pageNumber="69">E. siamensis</emphasis>
</taxonomicName>
Vitheepradit &amp; Sites, 2007, and
<taxonomicName lsidName="E. konkakinh" pageId="0" pageNumber="69" rank="species" species="konkakinh">
<emphasis italics="true" pageId="0" pageNumber="69">E. konkakinh</emphasis>
</taxonomicName>
sp. nov.
</paragraph>
</subSubSection>
</treatment>
</document>
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