357 lines
27 KiB
XML
357 lines
27 KiB
XML
<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 & Sites, Robert W." docDate="2023" docId="62000292684555879D581EE06013402E" 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 fuscus Basu, Chandra & Venkatesan 2017" docType="treatment" docVersion="2" 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="1679032168055" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Revision of the genus Eotrechus Kirkaldy (Hemiptera, Heteroptera, Gerridae), with descriptions of six new species</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Tran, Anh Duc</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-9605-0739</mods:nameIdentifier>
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<mods:affiliation>Faculty of Biology, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam</mods:affiliation>
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<mods:nameIdentifier type="email">tran.anhduc@hus.edu.vn</mods:nameIdentifier>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Zettel, Herbert</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-7760-0472</mods:nameIdentifier>
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<mods:affiliation>Herbert Zettel, 2 nd Zoological Department (Entomology), Natural History Museum Vienna, Burgring 7, 1010 Vienna, Austria</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Sites, Robert W.</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-3895-813X</mods:nameIdentifier>
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<mods:affiliation>Enns Entomology Museum, University of Missouri, Columbia, MO 65211, USA</mods:affiliation>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:title>Deutsche Entomologische Zeitschrift</mods:title>
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<mods:date>2023</mods:date>
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<mods:number>2023-03-16</mods:number>
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<mods:detail type="volume">
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<mods:number>70</mods:number>
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<mods:detail type="issue">
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<mods:number>1</mods:number>
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<mods:extent unit="page">
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<mods:start>69</mods:start>
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<mods:end>111</mods:end>
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<mods:url>http://dx.doi.org/10.3897/dez.70.97117</mods:url>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/dez.70.97117</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1860-1324-1-69</mods:identifier>
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<treatment LSID="urn:lsid:plazi:treatment:62000292684555879D581EE06013402E" httpUri="http://treatment.plazi.org/id/62000292684555879D581EE06013402E" lastPageNumber="69" pageId="0" pageNumber="69">
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<subSubSection pageId="0" pageNumber="69" type="nomenclature">
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<paragraph pageId="0" pageNumber="69">
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<taxonomicName ID-CoL="6FM26" LSID="62000292-6845-5587-9D58-1EE06013402E" authority="Basu, Chandra & Venkatesan, 2017" authorityName="Basu, Chandra & Venkatesan" authorityYear="2017" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus fuscus" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="fuscus">Eotrechus fuscus Basu, Chandra & Venkatesan, 2017</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="description">
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<paragraph pageId="0" pageNumber="69">
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Eotrechus fuscus. A. Pygophore, lateral view; B. Proctiger, dorsal view; C. paramere, lateral view; D, E. Posterior part of abdomen, female, dorsal and lateral views (A, B. Same scale; D, E. Same scale)." figureDoi="10.3897/dez.70.97117.figure2" httpUri="https://binary.pensoft.net/fig/826091" pageId="0" pageNumber="69">Figs 2</figureCitation>
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<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>
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</paragraph>
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||
</subSubSection>
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||
<subSubSection pageId="0" pageNumber="69" type="reference_group">
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<paragraph pageId="0" pageNumber="69">
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<taxonomicName authorityName="Basu, Chandra & Venkatesan" authorityYear="2017" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus fuscus" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="fuscus">Eotrechus fuscus</taxonomicName>
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Basu, Chandra & Venkatesan, 2017: 392-397, figs 1-12 (type locality: Sikkim, India).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="materials_examined">
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<paragraph pageId="0" pageNumber="69">Material examined.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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<materialsCitation collectingDate="2003-05-05" collectorName="Div., Alaungdaw Katthapa NP, Pagoda" country="Myanmar" elevation="350" latitude="22.31855" location="Sagaing" longLatPrecision="1" longitude="94.4753" specimenCount="4" specimenCount-female="3" specimenCount-male="1" stateProvince="Sagaing">
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<collectingCountry name="Myanmar">Myanmar</collectingCountry>
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•
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<specimenCount type="male">1 ♂</specimenCount>
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,
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<specimenCount type="female">3 ♀♀</specimenCount>
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(apterous);
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<collectingRegion country="Myanmar" name="Sagaing">Sagaing</collectingRegion>
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<collectorName>Div.</collectorName>
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,
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<collectorName>Alaungdaw Katthapa NP</collectorName>
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,
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<collectorName>Pagoda</collectorName>
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stream;
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<geoCoordinate degrees="22" direction="north" minutes="19.113" orientation="latitude" precision="1" value="22.31855">22°19.113'N</geoCoordinate>
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,
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<geoCoordinate degrees="94" direction="east" minutes="28.518" orientation="longitude" precision="1" value="94.4753">94°28.518'E</geoCoordinate>
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;
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<elevation metricMagnitude="2" metricUnit="m" metricValue="3.5" unit="m" value="350.0">
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<quantity metricMagnitude="2" metricUnit="m" metricValue="3.5" unit="m" value="350.0">350 m</quantity>
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a.s.l.
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</elevation>
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;
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<collectingDate value="2003-05-05">5 May 2003</collectingDate>
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; Boukal et al. leg.; (105); NHMW
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</materialsCitation>
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•
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<materialsCitation collectingDate="2003-05-06" collectorName="Div., Alaungdaw Katthapa NP, Pagoda" country="Myanmar" elevation="350" latitude="22.318233" location="Sagaing" longLatPrecision="1" longitude="94.480385" specimenCount="1" specimenCount-male="1" stateProvince="Sagaing">
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<specimenCount type="male">1 ♂</specimenCount>
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(macropterous);
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<collectingRegion country="Myanmar" name="Sagaing">Sagaing</collectingRegion>
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<collectorName>Div.</collectorName>
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,
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<collectorName>Alaungdaw Katthapa NP</collectorName>
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,
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<collectorName>Pagoda</collectorName>
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stream;
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<geoCoordinate degrees="22" direction="north" minutes="19.094" orientation="latitude" precision="1" value="22.318233">22°19.094'N</geoCoordinate>
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,
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<geoCoordinate degrees="94" direction="east" minutes="28.823" orientation="longitude" precision="1" value="94.480385">94°28.823'E</geoCoordinate>
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;
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<elevation metricMagnitude="2" metricUnit="m" metricValue="3.5" unit="m" value="350.0">
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<quantity metricMagnitude="2" metricUnit="m" metricValue="3.5" unit="m" value="350.0">350 m</quantity>
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a.s.l.
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</elevation>
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;
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<collectingDate value="2003-05-06">6 May 2003</collectingDate>
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; Boukal et al. leg.; (110); NHMW
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</materialsCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="diagnosis">
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<paragraph pageId="0" pageNumber="69">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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Size: apterous male, length 10.30, width 2.64 (apterous); macropterous male, length 11.60, width 2.78; apterous females, length 10.80-11.70, width 2.72-2.82. Antenna: segments I and II, each distinctly longer than segments III, IV; segment III shortest, ca. 0.5-0.6
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<normalizedToken originalValue="×">x</normalizedToken>
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length of each of segments I, II, and ca. 0.9
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<normalizedToken originalValue="×">x</normalizedToken>
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length of segment IV. Mesosternum ca. 1.6-1.7
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<normalizedToken originalValue="×">x</normalizedToken>
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length of metasternum (male: 2.07: 1.19; female: 2.07: 1.30). Fore femur slender in both sexes. In apterous morph, posterior three quarters of mesonotum raised into a hump. Male: abdominal sterna III-VII with longitudinal median groove; sternum VII ca. 0.8
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<normalizedToken originalValue="×">x</normalizedToken>
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length of two preceding sterna combined, posterior margin median notch ca. 0.25
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<normalizedToken originalValue="×">x</normalizedToken>
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length of sternum VII. Male genitalia: pygophore with two long, relatively slender posterolateral projections (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Eotrechus fuscus. A. Pygophore, lateral view; B. Proctiger, dorsal view; C. paramere, lateral view; D, E. Posterior part of abdomen, female, dorsal and lateral views (A, B. Same scale; D, E. Same scale)." figureDoi="10.3897/dez.70.97117.figure2" httpUri="https://binary.pensoft.net/fig/826091" pageId="0" pageNumber="69">2A</figureCitation>
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); paramere with proximal half wider, twice as wide as distal half, distal half stout, slightly twisted, tapering to rounded apex (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Eotrechus fuscus. A. Pygophore, lateral view; B. Proctiger, dorsal view; C. paramere, lateral view; D, E. Posterior part of abdomen, female, dorsal and lateral views (A, B. Same scale; D, E. Same scale)." figureDoi="10.3897/dez.70.97117.figure2" httpUri="https://binary.pensoft.net/fig/826091" pageId="0" pageNumber="69">2C</figureCitation>
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); proctiger posterolaterally produced into rounded processes, posterior margin broadly rounded (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Eotrechus fuscus. A. Pygophore, lateral view; B. Proctiger, dorsal view; C. paramere, lateral view; D, E. Posterior part of abdomen, female, dorsal and lateral views (A, B. Same scale; D, E. Same scale)." figureDoi="10.3897/dez.70.97117.figure2" httpUri="https://binary.pensoft.net/fig/826091" pageId="0" pageNumber="69">2B</figureCitation>
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). Female: abdomen long and slender; genitalia visible in lateral view, proctiger slightly longer than wide, directed ventrad (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Eotrechus fuscus. A. Pygophore, lateral view; B. Proctiger, dorsal view; C. paramere, lateral view; D, E. Posterior part of abdomen, female, dorsal and lateral views (A, B. Same scale; D, E. Same scale)." figureDoi="10.3897/dez.70.97117.figure2" httpUri="https://binary.pensoft.net/fig/826091" pageId="0" pageNumber="69">2D, E</figureCitation>
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).
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</paragraph>
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<caption doi="10.3897/dez.70.97117.figure2" httpUri="https://binary.pensoft.net/fig/826091" pageId="0" pageNumber="69" start="Figure 2" startId="F2">
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<paragraph pageId="0" pageNumber="69">
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<emphasis bold="true" pageId="0" pageNumber="69">Figure 2.</emphasis>
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<taxonomicName authorityName="Basu, Chandra & Venkatesan" authorityYear="2017" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus fuscus" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="fuscus">
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<emphasis italics="true" pageId="0" pageNumber="69">Eotrechus fuscus</emphasis>
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</taxonomicName>
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.
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<emphasis bold="true" pageId="0" pageNumber="69">A.</emphasis>
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Pygophore, lateral view;
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<emphasis bold="true" pageId="0" pageNumber="69">B.</emphasis>
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Proctiger, dorsal view;
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<emphasis bold="true" pageId="0" pageNumber="69">C.</emphasis>
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paramere, lateral view;
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<emphasis bold="true" pageId="0" pageNumber="69">D, E.</emphasis>
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Posterior part of abdomen, female, dorsal and lateral views (
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<emphasis bold="true" pageId="0" pageNumber="69">A, B.</emphasis>
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Same scale;
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<emphasis bold="true" pageId="0" pageNumber="69">D, E.</emphasis>
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Same scale).
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="description">
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<paragraph pageId="0" pageNumber="69">Supplemental description of apterous female.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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Head width across eyes 1.99; interocular width 0.80; eye kidney-shaped in dorsal view, length 0.85. Antennae subequal to body length (12.14: 11.40), lengths of segments I-IV: 3.67: 3.38: 2.17: 2.92; segment I without black spines. Pronotum shorter than head length (1.40: 1.89). Posterior three quarters of mesonotum strongly swollen, forming a hump. Lengths of mesosternum and metasternum: 2.07 and 1.30. Lengths of leg segments (femur: tibia: tarsal segment I: tarsal segment II): fore leg: 4.75: 3.50: 0.62: 0.71; middle leg: 9.08: 8.83: 0.60: 0.91; hind leg: 10.0: 11.9: 0.68: 0.93. Fore trochanter with two or three long, fine setae on ventral side. Fore femur similar to males, length ca. 11.9
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<normalizedToken originalValue="×">x</normalizedToken>
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maximum width (4.75: 0.40). Fore tibia similar to males. Middle and hind legs similar to males: middle and hind femur with short spines scattered along ventral surface, middle and hind tibiae with scattered long, stout setae. Claws stout, lengths of fore, mid- and hind claws: 0.32: 0.42: 0.41. Total length of abdominal sterna II-VII ca. 0.4
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<normalizedToken originalValue="×">x</normalizedToken>
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body length (4.87: 11.4). Sternum VII ca. 0.9
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<normalizedToken originalValue="×">x</normalizedToken>
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length of two preceding sterna combined (1.36: 1.53), posterior margin straight. Connexival corners of sternum VII pointed and slightly curved mesad (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Eotrechus fuscus. A. Pygophore, lateral view; B. Proctiger, dorsal view; C. paramere, lateral view; D, E. Posterior part of abdomen, female, dorsal and lateral views (A, B. Same scale; D, E. Same scale)." figureDoi="10.3897/dez.70.97117.figure2" httpUri="https://binary.pensoft.net/fig/826091" pageId="0" pageNumber="69">2D</figureCitation>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="69" type="description">
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<paragraph pageId="0" pageNumber="69">Supplemental description of macropterous male.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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Head chiefly black, with a transverse yellow mark on posterior margin; pronotum chiefly black, with yellow stripe on anterior part of midline, not extending onto pronotal lobe; wings chiefly black, membrane brown. Pronotum length (including pronotal lobe) 3.66, humeral width 2.28. Fore wing length 7.25, wing veins similar to
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<taxonomicName lsidName="E. kalidasa" pageId="0" pageNumber="69" rank="species" species="kalidasa">
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<emphasis italics="true" pageId="0" pageNumber="69">E. kalidasa</emphasis>
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</taxonomicName>
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(see
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<bibRefCitation DOI="https://doi.org/10.5962/bhl.part.15602" author="Matsuda, R" journalOrPublisher="The University of Kansas Science Bulletin" pageId="0" pageNumber="69" pagination="25 - 632" refId="B8" refString="Matsuda, R, 1960. Morphology, evolution and a classification of the Gerridae (Hemiptera - Heteroptera). The University of Kansas Science Bulletin 41 (2): 25 - 632, DOI: https://doi.org/10.5962/bhl.part.15602" title="Morphology, evolution and a classification of the Gerridae (Hemiptera - Heteroptera)." url="https://doi.org/10.5962/bhl.part.15602" volume="41" year="1960">Matsuda 1960</bibRefCitation>
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: fig. 553;
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<bibRefCitation author="Andersen, NM" journalOrPublisher="Steenstrupia" pageId="0" pageNumber="69" pagination="1 - 25" refId="B2" refString="Andersen, NM, 1982. Semiterrestrial water striders of the genera Eotrechus Kirkaldy and Chimarrhometra Bianchi (Insecta, Hemiptera, Gerridae). Steenstrupia 9: 1 - 25" title="Semiterrestrial water striders of the genera Eotrechus Kirkaldy and Chimarrhometra Bianchi (Insecta, Hemiptera, Gerridae)." volume="9" year="1982">Andersen 1982</bibRefCitation>
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: fig. 8). Other characteristics similar to apterous male.
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</paragraph>
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<paragraph pageId="0" pageNumber="69">Macropterous female: Unknown.</paragraph>
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</subSubSection>
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||
<subSubSection pageId="0" pageNumber="69" type="remarks">
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<paragraph pageId="0" pageNumber="69">Remarks.</paragraph>
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<paragraph pageId="0" pageNumber="69">
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The original description by
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<bibRefCitation DOI="https://doi.org/10.1515/aemnp-2017-0083" author="Basu, S" journalOrPublisher="Acta Entomologica Musei Nationalis Pragae" pageId="0" pageNumber="69" pagination="391 - 398" refId="B4" refString="Basu, S, Chandra, K, Venkatesan, T, 2017. Eotrechus fuscus sp. nov. from Northeastern India with a key to Indian species (Hemiptera: Heteroptera: Gerridae). Acta Entomologica Musei Nationalis Pragae 57 (2): 391 - 398, DOI: https://doi.org/10.1515/aemnp-2017-0083" title="Eotrechus fuscus sp. nov. from Northeastern India with a key to Indian species (Hemiptera: Heteroptera: Gerridae)." url="https://doi.org/10.1515/aemnp-2017-0083" volume="57" year="2017">Basu et al. (2017)</bibRefCitation>
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||
was based on only a single apterous male. Thus, supplementary descriptions of apterous female and macropterous male are provided as above.
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</paragraph>
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<paragraph pageId="0" pageNumber="69">
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<taxonomicName authorityName="Basu, Chandra & Venkatesan" authorityYear="2017" class="Insecta" family="Gerridae" genus="Eotrechus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Eotrechus fuscus" order="Hemiptera" pageId="0" pageNumber="69" phylum="Arthropoda" rank="species" species="fuscus">
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<emphasis italics="true" pageId="0" pageNumber="69">Eotrechus fuscus</emphasis>
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</taxonomicName>
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can be confused with
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<taxonomicName lsidName="E. kalidasa" pageId="0" pageNumber="69" rank="species" species="kalidasa">
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<emphasis italics="true" pageId="0" pageNumber="69">E. kalidasa</emphasis>
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</taxonomicName>
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, and the two species have greatly overlapping distributions. The combination of differences in the relative lengths of antennal segments, the relative lengths of fore tarsal segments, and the shape of the parameres help to distinguish
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<taxonomicName lsidName="E. fuscus" pageId="0" pageNumber="69" rank="species" species="fuscus">
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<emphasis italics="true" pageId="0" pageNumber="69">E. fuscus</emphasis>
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</taxonomicName>
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from
|
||
<taxonomicName lsidName="E. kalidasa" pageId="0" pageNumber="69" rank="species" species="kalidasa">
|
||
<emphasis italics="true" pageId="0" pageNumber="69">E. kalidasa</emphasis>
|
||
</taxonomicName>
|
||
, and also from
|
||
<taxonomicName lsidName="E. steineri" pageId="0" pageNumber="69" rank="species" species="steineri">
|
||
<emphasis italics="true" pageId="0" pageNumber="69">E. steineri</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. (see Table
|
||
<tableCitation captionStart="Table 1" captionStartId="T1" captionText="Table 1. Comparative morphology of E. kalidasa, E. fuscus, and E. steineri sp. nov." httpUri="http://table.plazi.org/id/EF594DCD37796B0AEC53DFC488CF38A9" pageId="0" pageNumber="69" tableUuid="EF594DCD37796B0AEC53DFC488CF38A9">1</tableCitation>
|
||
).
|
||
</paragraph>
|
||
<caption ID-Table-UUID="EF594DCD37796B0AEC53DFC488CF38A9" httpUri="http://table.plazi.org/id/EF594DCD37796B0AEC53DFC488CF38A9" pageId="0" pageNumber="69" start="Table 1" startId="T1">
|
||
<paragraph pageId="0" pageNumber="69">
|
||
<emphasis bold="true" pageId="0" pageNumber="69">Table 1.</emphasis>
|
||
Comparative morphology of
|
||
<taxonomicName lsidName="E. kalidasa" pageId="0" pageNumber="69" rank="species" species="kalidasa">
|
||
<emphasis italics="true" pageId="0" pageNumber="69">E. kalidasa</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName lsidName="E. fuscus" pageId="0" pageNumber="69" rank="species" species="fuscus">
|
||
<emphasis italics="true" pageId="0" pageNumber="69">E. fuscus</emphasis>
|
||
</taxonomicName>
|
||
, and
|
||
<taxonomicName lsidName="E. steineri" pageId="0" pageNumber="69" rank="species" species="steineri">
|
||
<emphasis italics="true" pageId="0" pageNumber="69">E. steineri</emphasis>
|
||
</taxonomicName>
|
||
sp. nov.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph pageId="0" pageNumber="69">
|
||
<table pageId="0" pageNumber="69">
|
||
<tr pageId="0" pageNumber="69">
|
||
<th colspan="1" isEmpty="true" pageId="0" pageNumber="69" rowspan="1">-</th>
|
||
<th colspan="1" pageId="0" pageNumber="69" rowspan="1">
|
||
<taxonomicName lsidName="E. kalidasa" pageId="0" pageNumber="69" rank="species" species="kalidasa">
|
||
<emphasis italics="true" pageId="0" pageNumber="69">E. kalidasa</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
<th colspan="1" pageId="0" pageNumber="69" rowspan="1">
|
||
<taxonomicName lsidName="E. fuscus" pageId="0" pageNumber="69" rank="species" species="fuscus">
|
||
<emphasis italics="true" pageId="0" pageNumber="69">E. fuscus</emphasis>
|
||
</taxonomicName>
|
||
</th>
|
||
<th colspan="1" pageId="0" pageNumber="69" rowspan="1">
|
||
<taxonomicName lsidName="E. steineri" pageId="0" pageNumber="69" rank="species" species="steineri">
|
||
<emphasis italics="true" pageId="0" pageNumber="69">E. steineri</emphasis>
|
||
</taxonomicName>
|
||
sp. nov.
|
||
</th>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="3">Antennal segments</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- all segments subequal in length</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- segments I and II, each distinctly longer than segments III and IV</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- segments I, II, and IV subequal in length</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- segments I and IV slightly longer than others</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="2">
|
||
- segment III shortest, 0.5-0.6
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
length of segments I, II, and ca. 0.9
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
length of segment IV
|
||
</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="2">
|
||
- segment III shortest, only 0.85-0.90
|
||
<normalizedToken originalValue="×">x</normalizedToken>
|
||
length of each of other segments
|
||
</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- segment III shortest</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">Fore tarsal segments</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">segment I slightly longer than segment II (1.17-1.30: 1.00)</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">segment I shorter than segment II (ca. 0.7: 1.00)</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">segment I slightly longer than segment II (1.10-1.25: 1.00)</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">Mesonotum of apterous form</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">transversely depressed in the middle</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">posterior three quarters with a hump</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">posterior two-thirds with a large hump</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">Abdominal sterna of males</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">with narrow median groove from sterna III-VII</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">with narrow median groove from sterna III-VII</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">sterna II-VII weakly depressed medially, not forming distinct groove</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="3">Paramere</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- proximal third only slightly wider than distal part, convex dorsad</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- proximal half twice as wide as distal half</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- proximal third twice as wide as distal part</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- distal part slender, straight</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- distal half stout, slightly twisted</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- distal two-thirds slender, directed slightly dorsad</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- apex narrow</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- apex rounded</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">- apex rounded, slightly broadened</td>
|
||
</tr>
|
||
<tr pageId="0" pageNumber="69">
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">Abdominal apex of females</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">proctiger completely concealed, not visible</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">proctiger visible</td>
|
||
<td colspan="1" pageId="0" pageNumber="69" rowspan="1">proctiger almost completed concealed</td>
|
||
</tr>
|
||
</table>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="69" type="distribution">
|
||
<paragraph pageId="0" pageNumber="69">Distribution.</paragraph>
|
||
<paragraph pageId="0" pageNumber="69">
|
||
India: Sikkim (
|
||
<bibRefCitation DOI="https://doi.org/10.1515/aemnp-2017-0083" author="Basu, S" journalOrPublisher="Acta Entomologica Musei Nationalis Pragae" pageId="0" pageNumber="69" pagination="391 - 398" refId="B4" refString="Basu, S, Chandra, K, Venkatesan, T, 2017. Eotrechus fuscus sp. nov. from Northeastern India with a key to Indian species (Hemiptera: Heteroptera: Gerridae). Acta Entomologica Musei Nationalis Pragae 57 (2): 391 - 398, DOI: https://doi.org/10.1515/aemnp-2017-0083" title="Eotrechus fuscus sp. nov. from Northeastern India with a key to Indian species (Hemiptera: Heteroptera: Gerridae)." url="https://doi.org/10.1515/aemnp-2017-0083" volume="57" year="2017">Basu et al. 2017</bibRefCitation>
|
||
); Myanmar (new record): Sagaing Region (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> |