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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="20322A0B0DBA5D66B4B4F8BD9674C55F" 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 siamensis Vitheepradit &amp; Sites 2007" docType="treatment" 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:plazi:treatment:20322A0B0DBA5D66B4B4F8BD9674C55F" httpUri="http://treatment.plazi.org/id/20322A0B0DBA5D66B4B4F8BD9674C55F" lastPageNumber="69" pageId="0" pageNumber="69">
<subSubSection pageId="0" pageNumber="69" type="nomenclature">
<paragraph pageId="0" pageNumber="69">
<taxonomicName ID-CoL="6FLPY" ID-ENA="2977881" LSID="20322A0B-0DBA-5D66-B4B4-F8BD9674C55F" authority="Vitheepradit &amp; Sites, 2007" authorityName="Vitheepradit &amp; Sites" authorityYear="2007" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus siamensis" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="siamensis">Eotrechus siamensis Vitheepradit &amp; Sites, 2007</taxonomicName>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="description">
<paragraph pageId="0" pageNumber="69">
<figureCitation captionStart="Figure 15" captionStartId="F15" captionText="Figure 15. Eotrechus elongatus (A-E) and E. siamensis (F-I), males. A, B, F. Right fore leg (A, F. Ventral view; B. Dorsal view); C, G. Genital capsule, lateral view; D, H. Pygophore, dorsal view; E, I. Proctiger, dorsal view (A, B, F. Same scale; C-E, G-I. Same scale)." figureDoi="10.3897/dez.70.97117.figure15" httpUri="https://binary.pensoft.net/fig/826104" pageId="0" pageNumber="69">Figs 15F-I</figureCitation>
<figureCitation captionStart="Figure 25" captionStartId="F25" captionText="Figure 25. Distribution records of species of Eotrechus. Squares represent E. kalidasa species group; circles represent E. pingae species group; triangles represent species unassigned to a group." figureDoi="10.3897/dez.70.97117.figure25" httpUri="https://binary.pensoft.net/fig/826114" pageId="0" pageNumber="69">, 25</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="reference_group">
<paragraph pageId="0" pageNumber="69">
<taxonomicName authorityName="Vitheepradit &amp; Sites" authorityYear="2007" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus siamensis" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="siamensis">Eotrechus siamensis</taxonomicName>
Vitheepradit &amp; Sites, 2007: 2-8, figs 1, 3-6 (type locality: Doi Inthanon National Park, Chiang Mai Province, Thailand).
</paragraph>
<paragraph pageId="0" pageNumber="69">
<taxonomicName authorityName="Vitheepradit &amp; Sites" authorityYear="2007" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus siamensis" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="siamensis">Eotrechus siamensis</taxonomicName>
:
<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 39, 45) (key).
</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="2003-05-03" country="Thailand" elevation="1379" latitude="18.6" location="Pha Dum" longLatPrecision="1275" longitude="98.51667" 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:20322A0B0DBA5D66B4B4F8BD9674C55F:96ADFD88138507E5CB2BB147EF98016A" country="Thailand" latitude="18.6" longLatPrecision="1275" longitude="98.51667" municipality="Doi Inthanon National Park" name="Pha Dum" stateProvince="Chiang Mai Province">Pha Dum</location>
waterfall, rock face;
<geoCoordinate degrees="18" direction="north" minutes="36" orientation="latitude" precision="925" value="18.6">18°36'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="1.379" unit="m" value="1379.0">
<quantity metricMagnitude="3" metricUnit="m" metricValue="1.379" unit="m" value="1379.0">1379 m</quantity>
a.s.l.
</elevation>
;
<collectingDate value="2003-05-03">3 May 2003</collectingDate>
; UMC and CMU teams leg.; L-499; 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="5" specimenCount-female="3" specimenCount-male="2" typeStatus="Paratypes">
<emphasis bold="true" italics="true" pageId="0" pageNumber="69">
<typeStatus>Paratypes</typeStatus>
</emphasis>
:
<collectingCountry name="Thailand">Thailand</collectingCountry>
<specimenCount type="male">2 ♂♂</specimenCount>
,
<specimenCount type="female">3 ♀♀</specimenCount>
(apterous)
</materialsCitation>
,
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="Thailand" location="Thailand" specimenCount="9" specimenCount-female="4" specimenCount-male="5" typeStatus="holotype">
<specimenCount type="male">5 ♂♂</specimenCount>
,
<specimenCount type="female">4 ♀♀</specimenCount>
(macropterous); same locality data as
<typeStatus>holotype</typeStatus>
; UMC
</materialsCitation>
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="Thailand" location="Thailand" specimenCount="2" specimenCount-female="1" specimenCount-male="1" typeStatus="holotype">
<specimenCount type="male">1 ♂</specimenCount>
,
<specimenCount type="female">1 ♀</specimenCount>
(macropterous); same locality data as
<typeStatus>holotype</typeStatus>
; ZRC
</materialsCitation>
<materialsCitation collectingDate="2002-04-02" country="Thailand" elevation="1460" latitude="18.533333" location="Siriphum Waterfall" longLatPrecision="1275" longitude="98.51667" municipality="Doi Inthanon National Park" specimenCount="4" specimenCount-female="4" stateProvince="Chiang Mai Province" typeStatus="paratype">
<specimenCount type="female">4 ♀♀</specimenCount>
(apterous);
<collectingRegion country="Thailand" name="Chiang Mai">Chiang Mai Province</collectingRegion>
,
<collectingMunicipality>Doi Inthanon National Park</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:20322A0B0DBA5D66B4B4F8BD9674C55F:A7744138EA49B46B646F074EFA54CC5E" country="Thailand" latitude="18.533333" longLatPrecision="1275" longitude="98.51667" municipality="Doi Inthanon National Park" name="Siriphum Waterfall" stateProvince="Chiang Mai Province">Siriphum Waterfall</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="2002-04-02">2 Apr. 2002</collectingDate>
; UMC and CMU teams leg.; UMC
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="materials_examined">
<paragraph pageId="0" pageNumber="69">Other material.</paragraph>
<paragraph pageId="0" pageNumber="69">
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="Thailand" location="Thailand" specimenCount="4" specimenCount-female="1" specimenCount-male="3">
<collectingCountry name="Thailand">Thailand</collectingCountry>
<specimenCount type="male">3 ♂♂</specimenCount>
,
<specimenCount type="female">1 ♀</specimenCount>
(apterous)
</materialsCitation>
,
<materialsCitation collectingDate="1995-04-24" collectorName="D. Kovac" country="Thailand" location="Siriphum" municipality="Doi Inthanon National Park" specimenCount="3" specimenCount-male="3" stateProvince="Chiang Mai Province">
<specimenCount type="male">3 ♂♂</specimenCount>
,
<specimenCount></specimenCount>
(macropterous);
<collectingRegion country="Thailand" name="Chiang Mai">Chiang Mai Province</collectingRegion>
,
<collectingMunicipality>Doi Inthanon National Park</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:20322A0B0DBA5D66B4B4F8BD9674C55F:B82475C4A6CE8EA51476124F68213925" country="Thailand" municipality="Doi Inthanon National Park" name="Siriphum" stateProvince="Chiang Mai Province">Siriphum</location>
waterfall;
<collectingDate value="1995-04-24">24 Apr. 1995</collectingDate>
;
<collectorName>D. Kovac</collectorName>
leg.; DK#2/47; ZRC.6.19857; ZRC
</materialsCitation>
<materialsCitation collectingDate="1999-04-28" collectorName="D. Kovac" country="Thailand" location="Siriphum" municipality="Doi Inthanon National Park" specimenCount="3" specimenCount-male="3" stateProvince="Chiang Mai Province">
<specimenCount type="male">3 ♂♂</specimenCount>
(macropterous);
<collectingRegion country="Thailand" name="Chiang Mai">Chiang Mai Province</collectingRegion>
,
<collectingMunicipality>Doi Inthanon National Park</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:20322A0B0DBA5D66B4B4F8BD9674C55F:11D9DF5FEE786E64D9145A9A0B75BAED" country="Thailand" municipality="Doi Inthanon National Park" name="Siriphum" stateProvince="Chiang Mai Province">Siriphum</location>
waterfalls;
<collectingDate value="1999-04-28">28 Apr. 1999</collectingDate>
;
<collectorName>D. Kovac</collectorName>
leg.; DK#A221/99; ZRC.6.19858; ZRC
</materialsCitation>
<specimenCount type="female">1 ♀</specimenCount>
(apterous),
<materialsCitation collectingDate="1999-04-28" collectorName="D. Kovac" country="Thailand" location="Siriphum" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai Province">
<specimenCount type="female">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:20322A0B0DBA5D66B4B4F8BD9674C55F:098981CA5E8304E196D3CFC71BE1114C" country="Thailand" municipality="Doi Inthanon National Park" name="Siriphum" stateProvince="Chiang Mai Province">Siriphum</location>
waterfalls;
<collectingDate value="1999-04-28">28 Apr. 1999</collectingDate>
;
<collectorName>D. Kovac</collectorName>
leg.; DK#A223/99; ZRC.6.19859; ZRC
</materialsCitation>
<specimenCount type="female">1 ♀</specimenCount>
(apterous),
<materialsCitation collectingDate="2002-03-02" collectorName="Vitheepradit, Kirawanich" country="Thailand" elevation="1380" latitude="18.533333" location="Siriphum Waterfall" longLatPrecision="1275" longitude="98.51667" municipality="Doi Inthanon National Park" specimenCount="1" specimenCount-female="1" stateProvince="Chiang Mai Province">
<specimenCount type="female">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:20322A0B0DBA5D66B4B4F8BD9674C55F:92B8BAE1191C483C303ABC8A31E946CB" country="Thailand" latitude="18.533333" longLatPrecision="1275" longitude="98.51667" municipality="Doi Inthanon National Park" name="Siriphum Waterfall" stateProvince="Chiang Mai Province">Siriphum Waterfall</location>
(upper);
<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="1.38" unit="m" value="1380.0">
<quantity metricMagnitude="3" metricUnit="m" metricValue="1.38" unit="m" value="1380.0">1380 m</quantity>
a.s.l.
</elevation>
;
<collectingDate value="2002-03-02">2 Mar. 2002</collectingDate>
;
<collectorName>Vitheepradit</collectorName>
,
<collectorName>Kirawanich</collectorName>
leg.; UMC
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="diagnosis">
<paragraph pageId="0" pageNumber="69">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="69">
Size: apterous males, length 6.80-7.84, width 2.28-2.48; macropterous males, length 8.48-8.96, width 2.48-2.54; apterous females, length 7.60-7.76, width 2.44-2.68; macropterous females, length 8.80-9.84, width 2.32-2.72 (with additional data from
<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>
). Venter of head with a median brown marking (in both sexes). Mesosternum ca. 2.8
<normalizedToken originalValue="×">x</normalizedToken>
(in female) or 3.2
<normalizedToken originalValue="×">x</normalizedToken>
(in male) length of metasternum. Male: fore femur incrassate, basal part broadened, with a large tubercle bearing a pointed tooth, distal part slightly constricted (Fig.
<figureCitation captionStart="Figure 15" captionStartId="F15" captionText="Figure 15. Eotrechus elongatus (A-E) and E. siamensis (F-I), males. A, B, F. Right fore leg (A, F. Ventral view; B. Dorsal view); C, G. Genital capsule, lateral view; D, H. Pygophore, dorsal view; E, I. Proctiger, dorsal view (A, B, F. Same scale; C-E, G-I. Same scale)." figureDoi="10.3897/dez.70.97117.figure15" httpUri="https://binary.pensoft.net/fig/826104" pageId="0" pageNumber="69">15F</figureCitation>
); fore tibia almost straight with scattered, stiff setae on extensor side; abdominal sterna III-VI medially grooved; sternum VII broadly depressed, slightly longer than two sterna combined, posterior margin with a median notch about as deep as one-third of sternum VII length. Male genitalia (Fig.
<figureCitation captionStart="Figure 15" captionStartId="F15" captionText="Figure 15. Eotrechus elongatus (A-E) and E. siamensis (F-I), males. A, B, F. Right fore leg (A, F. Ventral view; B. Dorsal view); C, G. Genital capsule, lateral view; D, H. Pygophore, dorsal view; E, I. Proctiger, dorsal view (A, B, F. Same scale; C-E, G-I. Same scale)." figureDoi="10.3897/dez.70.97117.figure15" httpUri="https://binary.pensoft.net/fig/826104" pageId="0" pageNumber="69">15G-I</figureCitation>
): abdominal segment VIII large, in ventral view, about as long as sternum VII, posterior margin on venter almost straight; pygophore short, posterolaterally with patch of very long, brush-like setae; caudal projection of pygophore plate-like with a concave posterior margin and angular posterolaterally; paramere small, ovoid; proctiger with pointed apex, directed upward, posterolateral lobes with patch of long, brush-like, brown setae, posteroventral surface without long, brush-like setae. Female: fore femur slender, flexor side with a row of ca. 15 long, stiff setae; fore tibia with scattered, long, stiff setae on extensor side along its length; sternum VII about as long as two preceding sterna combined, posterior margin almost straight, not enclosing genitalia; tergum VIII slightly tapering posteriorly; proctiger with acute apex.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="remarks">
<paragraph pageId="0" pageNumber="69">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="69">
This species can be placed in the
<taxonomicName lsidName="E. pingae" pageId="0" pageNumber="69" rank="species" species="pingae">
<emphasis italics="true" pageId="0" pageNumber="69">E. pingae</emphasis>
</taxonomicName>
species group because it has a basal tubercle on the fore femur of the male, a median notch on posterior margin of the sternum VII of the male, a plate-like apical projection of the pygophore, and a tri-lobed proctiger. This species possesses some unique characteristics that distinguish it from all other species of
<taxonomicName authorityName="Kirkaldy" authorityYear="1902" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="69">Eotrechus</emphasis>
</taxonomicName>
: the basal tubercle of the fore femur of the male is modified into a pointed tooth and the caudal projection of the pygophore is uniquely crescent-shaped (distinctly concave posteriorly and angular posterolaterally). Colouration of venter of head seems to be a good character to distinguish females of this species from others in the
<taxonomicName lsidName="E. pingae" pageId="0" pageNumber="69" rank="species" species="pingae">
<emphasis italics="true" pageId="0" pageNumber="69">E. pingae</emphasis>
</taxonomicName>
group. Otherwise, females of species in the
<taxonomicName lsidName="E. pingae" pageId="0" pageNumber="69" rank="species" species="pingae">
<emphasis italics="true" pageId="0" pageNumber="69">E. pingae</emphasis>
</taxonomicName>
group are very similar to each other.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="69" type="distribution">
<paragraph pageId="0" pageNumber="69">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="69">
Thailand: Chiang Mai (
<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>
) (Fig.
<figureCitation captionStart="Figure 25" captionStartId="F25" captionText="Figure 25. Distribution records of species of Eotrechus. Squares represent E. kalidasa species group; circles represent E. pingae species group; triangles represent species unassigned to a group." figureDoi="10.3897/dez.70.97117.figure25" httpUri="https://binary.pensoft.net/fig/826114" pageId="0" pageNumber="69">25</figureCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>