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<mods:title id="EC64E20D162BB09476C81F97991655D8">Three new species of the genus Viettherchnus Kirejtshuk, 1985 (Coleoptera: Nitidulidae: Nitidulinae: Cyllodini)</mods:title>
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Key to the species of
<taxonomicName id="5A8A66AFF8262965BCE3850CFDCFF8EA" authority="Kirejtshuk, 1985" authorityName="Kirejtshuk" authorityYear="1985" box="[413,583,1801,1828]" class="Insecta" family="Nitidulidae" genus="Viettherchnus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="599" phylum="Arthropoda" rank="genus">
<emphasis id="AFFEC13EF8262965BCE3850CFDCFF8EA" bold="true" box="[413,583,1801,1828]" italics="true" pageId="9" pageNumber="599">Viettherchnus</emphasis>
</taxonomicName>
(modified after
<bibRefCitation id="F91B60DDF8262965BE6F850FFB20F8EA" author="Kirejtshuk, A. G. &amp; Kirk-Spriggs, A. H." box="[785,1192,1802,1828]" pageId="9" pageNumber="599" pagination="131 - 138" refId="ref7251" refString="Kirejtshuk, A. G. &amp; Kirk-Spriggs, A. H. (1996) Viettherchnus Kirejtshuk, 1985 and Ceramphosia gen. n. from the Indo-Malayan Region (Coleoptera: Nitidulidae). Zoosystematica Rossica, 4, 131 - 138. [1995]" type="journal article" year="1996">Kirejtshuk &amp; Kirk-Spriggs 1996</bibRefCitation>
)
</emphasis>
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<paragraph id="9D351D2CF8262965BDE9854AFA14F8AA" blockId="9.[151,1436,1871,2039]" box="[151,1436,1871,1893]" pageId="9" pageNumber="599">
<keyLead id="267BBE19F8262965BDE9854AFA14F8AA" box="[151,1436,1871,1893]" pageId="9" pageNumber="599">1. Black with red pattern on elytra. Antennal club shorter than antennomeres IIVIII combined......................... 2</keyLead>
</paragraph>
<paragraph id="9D351D2CF8262965BDE98568FA14F851" blockId="9.[151,1436,1871,2039]" pageId="9" pageNumber="599">
<keyLead id="267BBE19F8262965BDE98568FA14F851" pageId="9" pageNumber="599">- Body ± unicolorous, sometimes with indistinct lightening on disc of pronotum or elytra; if bicoloured, then without several separated spots on elytra. Length of antennal club various..................................................... 3</keyLead>
</paragraph>
</keyStep>
<keyStep id="267E0589F8262966BDE985A2FA14FEF1" lastPageId="10" lastPageNumber="600" pageId="9" pageNumber="599">
<paragraph id="9D351D2CF8262965BDE985A2FA14F838" blockId="9.[151,1436,1871,2039]" pageId="9" pageNumber="599">
<keyLead id="267BBE19F8262965BDE985A2FA14F838" pageId="9" pageNumber="599">
2. Black with two small bright red spots on each elytron. Male: mandibles with long and flat subparallel-sided projections bluntly rounded apically; scape with anterior margin rounded, medially projected. Body length:
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.
<collectingCountry id="E59D5DBCF8262965B9CF85C1FA81F814" box="[1201,1289,1988,2010]" name="Malaysia" pageId="9" pageNumber="599">Malaysia</collectingCountry>
........................................................................
<taxonomicName id="5A8A66AFF8262965BEAE85E7FA14F838" authority="Kirejtshuk &amp; Kirk-Spriggs, 1996" authorityName="Kirejtshuk &amp; Kirk-Spriggs" authorityYear="1996" box="[976,1436,2017,2039]" class="Insecta" family="Nitidulidae" genus="Viettherchnus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="9" pageNumber="599" phylum="Arthropoda" rank="species" species="plagiatus">
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<emphasis id="AFFEC13EF8262965BEAE85E7FBCCF839" bold="true" box="[976,1092,2017,2039]" italics="true" pageId="9" pageNumber="599">V. plagiatus</emphasis>
<bibRefCitation id="F91B60DDF8262965B93485E4FA14F838" author="Kirejtshuk, A. G. &amp; Kirk-Spriggs, A. H." box="[1098,1436,2017,2039]" pageId="9" pageNumber="599" pagination="131 - 138" refId="ref7251" refString="Kirejtshuk, A. G. &amp; Kirk-Spriggs, A. H. (1996) Viettherchnus Kirejtshuk, 1985 and Ceramphosia gen. n. from the Indo-Malayan Region (Coleoptera: Nitidulidae). Zoosystematica Rossica, 4, 131 - 138. [1995]" type="journal article" year="1996">Kirejtshuk &amp; Kirk-Spriggs, 1996</bibRefCitation>
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<keyLead id="267BBE19F8252966BDE9829DFA14FEF1" pageId="10" pageNumber="600">
<emphasis id="AFFEC13EF8252966BDE9829DFF17FF63" bold="true" box="[151,159,152,173]" pageId="10" pageNumber="600">-</emphasis>
Typically orange-red, pronotum with four black spots, elytra with several black spots. In specimens with most extended black pigmentation pronotum mostly black with orange borders at sides and lateral portions of basal margin, as well as with more or less interrupted zigzag transverse bar on disc; elytra black, each with large orange ellipse in sutural half, reaching from basal margin to ca. 2/3 of elytra length and projecting shortly laterad, also humeral angle orange. Male: mandibles arcuately dilated laterally with sharp, raised angulate dorsal edge; scape with anterior margin rounded, medially subangulate. Body length: 2.43.0 mm.
<collectingCountry id="E59D5DBCF8252966BC1F832FFE12FE8E" box="[353,410,298,320]" name="Nepal" pageId="10" pageNumber="600">Nepal</collectingCountry>
....................................................................
<emphasis id="AFFEC13EF8252966B9A5832FFA14FEF1" bold="true" box="[1243,1436,298,320]" pageId="10" pageNumber="600">
<taxonomicName id="5A8A66AFF8252966B9A5832FFAC1FE8E" authorityName="Jelínek &amp; Hájek" authorityYear="2024" box="[1243,1353,298,320]" class="Insecta" family="Nitidulidae" genus="Viettherchnus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="10" pageNumber="600" phylum="Arthropoda" rank="species" species="orszuliki" status="sp. nov.">
<emphasis id="AFFEC13EF8252966B9A5832FFAC1FE8E" bold="true" box="[1243,1353,298,320]" italics="true" pageId="10" pageNumber="600">V. orszuliki</emphasis>
</taxonomicName>
<taxonomicNameLabel id="B4CD7C45F8252966B82E832FFA14FEF1" box="[1360,1436,298,319]" pageId="10" pageNumber="600" rank="species">sp. nov.</taxonomicNameLabel>
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3. Antennal club shorter than antennomeres IIVIII combined. Black; disc of elytra orange, sides and apex black. Male: anterior margin of frons extended forwards, overlapping basal portion of clypeus. Body length: 2.43.0 mm.
<collectingCountry id="E59D5DBCF8252966B9CC8360FA87FEB5" box="[1202,1295,357,379]" name="Indonesia" pageId="10" pageNumber="600">Indonesia</collectingCountry>
(
<collectingRegion id="5F4ED3CEF8252966B8638360FA1AFEB5" box="[1309,1426,357,379]" country="Indonesia" name="Kalimantan Utara" pageId="10" pageNumber="600">Kalimantan</collectingRegion>
),
<collectingCountry id="E59D5DBCF8252966BD9C8387FEB2FE56" box="[226,314,386,408]" name="Malaysia" pageId="10" pageNumber="600">Malaysia</collectingCountry>
(
<collectingRegion id="5F4ED3CEF8252966BC388387FE0AFE56" box="[326,386,386,408]" country="Malaysia" name="Perak" pageId="10" pageNumber="600">Perak</collectingRegion>
),
<collectingCountry id="E59D5DBCF8252966BCEC8386FE67FE56" box="[402,495,387,408]" name="Myanmar" pageId="10" pageNumber="600">Myanmar</collectingCountry>
(Tenasserim)....................................................
<taxonomicName id="5A8A66AFF8252966B9908387FAC0FE56" authorityName="Jelínek &amp; Hájek" authorityYear="2024" box="[1262,1352,386,408]" class="Insecta" family="Nitidulidae" genus="Viettherchnus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="10" pageNumber="600" phylum="Arthropoda" rank="species" species="helferi" status="sp. nov.">V. helferi</taxonomicName>
<taxonomicNameLabel id="B4CD7C45F8252966B8308387FA14FE56" box="[1358,1436,386,408]" pageId="10" pageNumber="600" rank="species">
<emphasis id="AFFEC13EF8252966B8308387FA1EFE59" bold="true" box="[1358,1430,386,407]" pageId="10" pageNumber="600">sp. nov</emphasis>
.
</taxonomicNameLabel>
</keyLead>
</paragraph>
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<keyLead id="267BBE19F8252966BDE983A5FA14FE7B" box="[151,1436,415,437]" pageId="10" pageNumber="600">- Antennal club as long as or longer than antennomeres IIVIII combined......................................... 4</keyLead>
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<keyLead id="267BBE19F8252966BDE983B8FA14FDC2" pageId="10" pageNumber="600">
4. Elytra without distinct longitudinal series of punctures. Punctation of dorsum especially fine, particularly on elytra. Elytra separately rounded apically. Antennal club ca. 1.3× longer than wide. Male: mandibles with slightly raised lateral projections; scapus with anterior margin rounded. Body length:
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.
<collectingCountry id="E59D5DBCF8252966BE5B83F2FC19FDC3" box="[805,913,503,525]" name="Philippines" pageId="10" pageNumber="600">Philippines</collectingCountry>
(Mindanao)....
<taxonomicName id="5A8A66AFF8252966B93983FDFA14FDC2" authority="Kirejtshuk, 1987" authorityName="Kirejtshuk" authorityYear="1987" box="[1095,1436,503,525]" class="Insecta" family="Nitidulidae" genus="Viettherchnus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="10" pageNumber="600" phylum="Arthropoda" rank="species" species="philippinensis">
<emphasis id="AFFEC13EF8252966B93983FDFA14FDC2" bold="true" box="[1095,1436,503,525]" pageId="10" pageNumber="600">
<emphasis id="AFFEC13EF8252966B93983FDFB63FDC3" bold="true" box="[1095,1259,503,525]" italics="true" pageId="10" pageNumber="600">V. philippinensis</emphasis>
<bibRefCitation id="F91B60DDF8252966B98F83F2FA14FDC2" author="Kirejtshuk, A. G." box="[1265,1436,503,525]" pageId="10" pageNumber="600" pagination="137 - 170" refId="ref7170" refString="Kirejtshuk, A. G. (1987) Novye vidy kompleksa rodov blizkikh k Cyllodes Erichson (Coleoptera, Nitidulidae) iz Indokitaya i sopredel'nykh territorii [New species of the complex of genera related to Cyllodes Erichson from Indochina and adjoining territories]. In: Medvedev, L. N. (Ed.), Entomofauna Vietnama [Entomofauna of Vietnam]. Nauka, Moskva, pp. 137 - 170. [in Russian]" type="book chapter" year="1987">Kirejtshuk, 1987</bibRefCitation>
</emphasis>
</taxonomicName>
</keyLead>
</paragraph>
<paragraph id="9D351D2CF8252966BDE98010FA14FD86" blockId="10.[151,1437,151,907]" pageId="10" pageNumber="600">
<keyLead id="267BBE19F8252966BDE98010FA14FD86" pageId="10" pageNumber="600">- Longitudinal rows of punctures on elytra ± distinct. Sutural angle between apices of elytra less distinct. Dorsum more coarsely punctate. Antennal club at least 1.5× longer than wide........................................................ 5</keyLead>
</paragraph>
</keyStep>
<keyStep id="267E0589F8252966BDE9804AFA14FD15" pageId="10" pageNumber="600">
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<keyLead id="267BBE19F8252966BDE9804AFA14FD51" pageId="10" pageNumber="600">
5. Antennal club narrower, slightly wider than tibiae, not longer than antennomeres IIVIII combined. Male: mandibles with strongly raised rounded lateral projections; scapus with anterior margin rounded. Body length:
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.
<collectingCountry id="E59D5DBCF8252966B9938068FAC9FD4D" box="[1261,1345,621,643]" name="Vietnam" pageId="10" pageNumber="600">Vietnam</collectingCountry>
, southern
<collectingCountry id="E59D5DBCF8252966BD9C808FFE9BFD6E" box="[226,275,650,672]" name="India" pageId="10" pageNumber="600">India</collectingCountry>
........................................................................
<taxonomicName id="5A8A66AFF8252966B906808FFA14FD51" authority="Kirejtshuk, 1985" authorityName="Kirejtshuk" authorityYear="1985" box="[1144,1436,650,672]" class="Insecta" family="Nitidulidae" genus="Viettherchnus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="10" pageNumber="600" phylum="Arthropoda" rank="species" species="finitimus">
<emphasis id="AFFEC13EF8252966B906808FFA14FD51" bold="true" box="[1144,1436,650,672]" pageId="10" pageNumber="600">
<emphasis id="AFFEC13EF8252966B906808FFB62FD6E" bold="true" box="[1144,1258,650,672]" italics="true" pageId="10" pageNumber="600">V. finitimus</emphasis>
<bibRefCitation id="F91B60DDF8252966B98F808FFA14FD51" author="Kirejtshuk, A. G." box="[1265,1436,650,672]" pageId="10" pageNumber="600" pagination="157 - 164" refId="ref7079" refString="Kirejtshuk, A. G. (1985) Novye vidy Cyllodes Erichson i Viettherchnus gen. n. (Coleoptera, Nitidulidae) fauny Vietnama i sopredel'nykh territorii [New species of Cyllodes Erichson and Viettherchnus gen. n. (Coleoptera, Nitidulidae) of the fauna of Vietnam and adjoining territories]. In: Medvedev, L. N. (Ed.), Nasekomye Vietnama [Insects of Vietnam]. Nauka, Moskva, pp. 157 - 164. [in Russian]" type="book chapter" year="1985">Kirejtshuk, 1985</bibRefCitation>
</emphasis>
</taxonomicName>
</keyLead>
</paragraph>
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<keyLead id="267BBE19F8252966BDE980ADFA14FD15" pageId="10" pageNumber="600">- Antennal club comparatively larger, in the widest part about 1.5× wider than tibiae, as long as antennomeres IIVIII combined or longer............................................................................................ 6</keyLead>
</paragraph>
</keyStep>
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6. Elytra brightly orange with black sides and apex. Frons without any concavity. Male: mandibles with striking, acutely pointed projections curved outwards; scapus with anterior margin rounded. Body length:
<quantity id="5A72B0C9F8252966BE938105FBB1FCDB" box="[1005,1081,768,789]" metricMagnitude="-3" metricUnit="m" metricValue="2.4" pageId="10" pageNumber="600" unit="mm" value="2.4">2.4 mm</quantity>
.
<collectingCountry id="E59D5DBCF8252966B93C80FAFB12FCDB" box="[1090,1178,767,789]" name="Malaysia" pageId="10" pageNumber="600">Malaysia</collectingCountry>
(
<collectingRegion id="5F4ED3CEF8252966B9D880FAFB68FCDB" box="[1190,1248,767,789]" country="Malaysia" name="Perak" pageId="10" pageNumber="600">Perak</collectingRegion>
).................................................................................................
<emphasis id="AFFEC13EF8252966B9AD8118FA14FCFC" bold="true" box="[1235,1436,796,818]" pageId="10" pageNumber="600">
<taxonomicName id="5A8A66AFF8252966B9AD8118FAC1FCFC" authorityName="Jelínek &amp; Hájek" authorityYear="2024" box="[1235,1353,796,818]" class="Insecta" family="Nitidulidae" genus="Viettherchnus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="10" pageNumber="600" phylum="Arthropoda" rank="species" species="apriculus" status="sp. nov.">
<emphasis id="AFFEC13EF8252966B9AD8118FAC1FCFC" bold="true" box="[1235,1353,796,818]" italics="true" pageId="10" pageNumber="600">V. apriculus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="B4CD7C45F8252966B82E8118FA14FCFC" box="[1360,1436,797,818]" pageId="10" pageNumber="600" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
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</paragraph>
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- Almost unicolorous chestnut brown. Frons with distinct concavity. Male: mandibles with lateral margin of each projection angulate, apices bluntly pointed, turning up abruptly at half their length; scapus with anterior margin angulate. Body length: 2.33.0 mm.
<collectingCountry id="E59D5DBCF8252966BC1F8170FE36FC45" box="[353,446,885,907]" name="Indonesia" pageId="10" pageNumber="600">Indonesia</collectingCountry>
(
<collectingRegion id="5F4ED3CEF8252966BCB58170FDAEFC45" box="[459,550,885,907]" country="Indonesia" name="Sulawesi Utara" pageId="10" pageNumber="600">Sulawesi</collectingRegion>
),
<collectingCountry id="E59D5DBCF8252966BF498170FD2BFC45" box="[567,675,885,907]" name="Philippines" pageId="10" pageNumber="600">Philippines</collectingCountry>
(Luzon).............
<taxonomicName id="5A8A66AFF8252966BED88170FA14FC44" authority="Kirejtshuk &amp; Kirk-Spriggs, 1996" authorityName="Kirejtshuk &amp; Kirk-Spriggs" authorityYear="1996" box="[934,1436,884,907]" class="Insecta" family="Nitidulidae" genus="Viettherchnus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Coleoptera" pageId="10" pageNumber="600" phylum="Arthropoda" rank="species" species="sulawesiensis">
<emphasis id="AFFEC13EF8252966BED88170FA14FC44" bold="true" box="[934,1436,884,907]" pageId="10" pageNumber="600">
<emphasis id="AFFEC13EF8252966BED88170FBCCFC44" bold="true" box="[934,1092,884,906]" italics="true" pageId="10" pageNumber="600">V. sulawesiensis</emphasis>
<bibRefCitation id="F91B60DDF8252966B9348170FA14FC44" author="Kirejtshuk, A. G. &amp; Kirk-Spriggs, A. H." box="[1098,1436,885,907]" pageId="10" pageNumber="600" pagination="131 - 138" refId="ref7251" refString="Kirejtshuk, A. G. &amp; Kirk-Spriggs, A. H. (1996) Viettherchnus Kirejtshuk, 1985 and Ceramphosia gen. n. from the Indo-Malayan Region (Coleoptera: Nitidulidae). Zoosystematica Rossica, 4, 131 - 138. [1995]" type="journal article" year="1996">Kirejtshuk &amp; Kirk-Spriggs, 1996</bibRefCitation>
</emphasis>
</taxonomicName>
</keyLead>
</paragraph>
</keyStep>
</subSubSection>
</treatment>
</document>