181 lines
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181 lines
18 KiB
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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.476.8630" ID-PMC="PMC4311692" ID-Pensoft-Pub="1313-2970-476-1" ID-Pensoft-UUID="FC4DC947FF97FF86190BFFD8B82CAB56" ID-PubMed="25685002" ID-Zenodo-Dep="578702" ID-ZooBank="086D71AF8A294F028559C2E0456B5C5B" ModsDocID="1313-2970-476-1" checkinTime="1451244761026" checkinUser="pensoft" docAuthor="Gustafson, Grey T. & Miller, Kelly B." docDate="2015" docId="1FCBEBF2454292A842D635D64A503D0A" docLanguage="en" docName="ZooKeys 476: 1-135" docOrigin="ZooKeys 476" docPubDate="2015-01-23" docSource="http://dx.doi.org/10.3897/zookeys.476.8630" docTitle="Dineutus longimanus" docType="treatment" docVersion="5" id="FC4DC947FF97FF86190BFFD8B82CAB56" lastPageNumber="48" masterDocId="FC4DC947FF97FF86190BFFD8B82CAB56" masterDocTitle="The New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini)" masterLastPageNumber="135" masterPageNumber="1" pageNumber="47" updateTime="1668159852297" 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>The New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini)</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:role>
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<mods:namePart>Gustafson, Grey T.</mods:namePart>
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<mods:affiliation>Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA</mods:affiliation>
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<mods:nameIdentifier type="email">gtgustafson@gmail.com</mods:nameIdentifier>
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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>Miller, Kelly B.</mods:namePart>
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<mods:affiliation>Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA</mods:affiliation>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2015</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2015-01-23</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>476</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>135</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.476.8630</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.476.8630</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-476-1</mods:identifier>
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<mods:identifier type="ZooBank">086D71AF8A294F028559C2E0456B5C5B</mods:identifier>
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<mods:identifier type="Pensoft-UUID">FC4DC947FF97FF86190BFFD8B82CAB56</mods:identifier>
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<mods:identifier type="Zenodo-Dep">578702</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152057938" LSID="urn:lsid:plazi:treatment:1FCBEBF2454292A842D635D64A503D0A" httpUri="http://treatment.plazi.org/id/1FCBEBF2454292A842D635D64A503D0A" lastPageId="47" lastPageNumber="48" pageId="46" pageNumber="47">
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<subSubSection pageId="46" pageNumber="47" type="nomenclature">
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<paragraph pageId="46" pageNumber="47">
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<taxonomicName LSID="1FCBEBF2-4542-92A8-42D6-35D64A503D0A" authority="(Olivier, 1791)" baseAuthorityName="Olivier" baseAuthorityYear="1791" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus longimanus" order="Coleoptera" pageId="46" pageNumber="47" phylum="Arthropoda" rank="species" species="longimanus">Dineutus longimanus (Olivier, 1791)</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="46" pageNumber="47" type="differential diagnosis">
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<paragraph pageId="46" pageNumber="47">Differential diagnosis.</paragraph>
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<paragraph pageId="46" pageNumber="47">
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This is a very unique
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<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus" order="Coleoptera" pageId="46" pageNumber="47" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="46" pageNumber="47">Dineutus</emphasis>
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</taxonomicName>
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species, easily distinguished from all other New World
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<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus" order="Coleoptera" pageId="46" pageNumber="47" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="46" pageNumber="47">Dineutus</emphasis>
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</taxonomicName>
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, by the elytral apices possessing a spine located between the sutural and apicolateral angles. Serrations and irregularities are also present, and the sutural angle is also produced into a short spine. The venter is usually more lightly colored from reddish to yellow.
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="47" lastPageNumber="48" pageId="46" pageNumber="47" type="distribution">
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<paragraph pageId="46" pageNumber="47">Distribution and subspecies.</paragraph>
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<paragraph pageId="46" pageNumber="47">
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This species is endemic to the Caribbean and represents a bit of a population genetics and Caribbean biogeography problem. The species is currently divided into four subspecies, with each island of the Greater Antilles having its own subpsieces, with the two most unique subspecies being found at opposite ends of the species distribution (Cuba and Puerto Rico). The two subspecies occupying the middle area of the range (Jamaica and the Dominican Republic) are less distinct and seem to form a gradient between the morphologies of the two subspecies at the opposite ends. The aedeagi of three of the subspecies are very similar with only that of
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<taxonomicName authorityName="Ochs" authorityYear="1924" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus longimanus subsp. portoricensis" order="Coleoptera" pageId="46" pageNumber="47" phylum="Arthropoda" rank="subSpecies" species="longimanus" subSpecies="portoricensis">
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<emphasis italics="true" pageId="46" pageNumber="47">Dineutus longimanus portoricensis</emphasis>
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</taxonomicName>
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offering some significant differences. For these reasons we have decided to retain the classification proposed by
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<bibRefCitation author="Ochs, G" journalOrPublisher="American Museum Novitates" pageId="94" pageNumber="95" pagination="1 - 8" refId="B86" refString="Ochs, G, 1924. On the West Indian Gyrinidae and a new species of Gyretes from northern Brazil. American Museum Novitates 125: 1 - 8" title="On the West Indian Gyrinidae and a new species of Gyretes from northern Brazil." volume="125" year="1924">Ochs (1924</bibRefCitation>
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,
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<bibRefCitation author="Ochs, G" journalOrPublisher="Entomologische Zeitschrift" pageId="94" pageNumber="95" pagination="129 - 140" refId="B89" refString="Ochs, G, 1926a. Die Dineutini. 2. Tribus der Unterfamilien Enhydrinae Fam. Gyrinidae (Col). A. Aligemeiner Teil. Entomologische Zeitschrift 40: 129 - 140" title="Die Dineutini. 2. Tribus der Unterfamilien Enhydrinae Fam. Gyrinidae (Col). A. Aligemeiner Teil." volume="40" year="1926 a">1926a</bibRefCitation>
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,
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<bibRefCitation author="Ochs, G" journalOrPublisher="Psyche" pageId="95" pageNumber="96" pagination="85 - 93" publicationUrl="10.1155/1938/37837" refId="B95" refString="Ochs, G, 1938. Additional remarks on West Indian Gyrinidae. Psyche 45: 85 - 93, DOI: 10.1155/1938/37837" title="Additional remarks on West Indian Gyrinidae." url="10.1155/1938/37837" volume="45" year="1938">1938</bibRefCitation>
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) in treating the four forms as subspecies. Future genetic work may shed some light on these issues.
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</paragraph>
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<paragraph pageId="46" pageNumber="47">
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<taxonomicName baseAuthorityName="Olivier" baseAuthorityYear="1791" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus longimanus" order="Coleoptera" pageId="46" pageNumber="47" phylum="Arthropoda" rank="species" species="longimanus">
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<emphasis italics="true" pageId="46" pageNumber="47">Dineutus longimanus</emphasis>
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</taxonomicName>
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can be distinguished from all other North American species of
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<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus" order="Coleoptera" pageId="46" pageNumber="47" phylum="Arthropoda" rank="genus">
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<emphasis italics="true" pageId="46" pageNumber="47">Dineutus</emphasis>
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</taxonomicName>
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in having the elytral apices spinose with serrations and irregularities present. The subspecies can be separated by the following key:
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</paragraph>
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<paragraph pageId="47" pageNumber="48">
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<table inLine="true" pageId="47" pageNumber="48">
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<tr pageId="47" pageNumber="48">
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">
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<pageBreakToken pageId="47" pageNumber="48" start="start">1</pageBreakToken>
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</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">
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Body form of both sexes evenly elongate oval (Figs
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<figureCitation captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Dineutus longimanus cubensis. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="47" pageNumber="48">20A, C</figureCitation>
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;
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<figureCitation captionStart="Figure 22" captionStartId="F22" captionText="Figure 22. Dineutus longimanus jamaicensis. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="47" pageNumber="48">22A, C</figureCitation>
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); Elytra with apicolateral sinuation not evident, at most weakly developed, apical serrations strongly developed as small thorns; Mesotarsal claws with ventral margin rounded and evenly narrowed apically, without a denticle (Figs
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<figureCitation captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Dineutus longimanus cubensis. A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm." pageId="47" pageNumber="48">21C</figureCitation>
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;
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<figureCitation captionStart="Figure 23" captionStartId="F23" captionText="Figure 23. Dineutus longimanus jamaicensis. A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm." pageId="47" pageNumber="48">23C</figureCitation>
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); Metacoxae with numerous shallow punctures extending on to lateral wings of metacoxae; Median lobe of aedeagus more parallel sided, parameres of aedeagus more narrowly rounded (Fig.
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<figureCitation captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Dineutus longimanus cubensis. A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm." pageId="47" pageNumber="48">21A</figureCitation>
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;
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<figureCitation captionStart="Figure 23" captionStartId="F23" captionText="Figure 23. Dineutus longimanus jamaicensis. A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm." pageId="47" pageNumber="48">23A</figureCitation>
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). Western Caribbean
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</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">
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<emphasis bold="true" pageId="47" pageNumber="48">2</emphasis>
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</td>
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</tr>
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<tr pageId="47" pageNumber="48">
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">-</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">
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Body form of males more laterally expanded after basal half of elytra (Figs
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<figureCitation captionStart="Figure 24" captionStartId="F24" captionText="Figure 24. Dineutus longimanus longimanus. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="47" pageNumber="48">24C</figureCitation>
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;
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<figureCitation captionStart="Figure 26" captionStartId="F26" captionText="Figure 26. Dineutus longimanus portoricensis. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="47" pageNumber="48">26C</figureCitation>
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); Elytra with apicolateral sinuation moderately to strongly evident, apical serrations more weakly developed especially apicolaterally; Mesotarsal claws with a denticle (Figs
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<figureCitation captionStart="Figure 25" captionStartId="F25" captionText="Figure 25. Dineutus longimanus longimanus. A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm." pageId="47" pageNumber="48">25C</figureCitation>
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;
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<figureCitation captionStart="Figure 27" captionStartId="F27" captionText="Figure 27. Dineutus longimanus portoricensis. A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm." pageId="47" pageNumber="48">27C</figureCitation>
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); Metacoxae with sparse and very shallowly impressed punctures; Median lobe of aedeagus weakly constricted medially, parameres of aedeagus more broadly rounded (Figs
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<figureCitation captionStart="Figure 25" captionStartId="F25" captionText="Figure 25. Dineutus longimanus longimanus. A aedeagus dorsal view B aedeagus ventral view C ♂ mesotarsal claws D aedeagus lateral view. Scale bar for C ≈ 0.10 mm all others ≈ 1 mm." pageId="47" pageNumber="48">25A</figureCitation>
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;
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<figureCitation captionStart="Figure 26" captionStartId="F26" captionText="Figure 26. Dineutus longimanus portoricensis. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="47" pageNumber="48">26A</figureCitation>
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). Eastern Caribbean
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</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">
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<emphasis bold="true" pageId="47" pageNumber="48">3</emphasis>
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</td>
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</tr>
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<tr pageId="47" pageNumber="48">
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">2</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">Relatively smaller in size: 10.8-12.9 mm. Reticulation of dorsal surface more well impressed, medial disc reticulation composed of small regularly shaped circular sculpticells; Metacoxae with numerous large, shallow punctures present, extending regularly on to the metacoxal wings. Cuba</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">
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<taxonomicName authorityName="Ochs" authorityYear="1927" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus longimanus subsp. cubensis" order="Coleoptera" pageId="47" pageNumber="48" phylum="Arthropoda" rank="subSpecies" species="longimanus" subSpecies="cubensis">
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<emphasis bold="true" italics="true" pageId="47" pageNumber="48">Dineutus longimanus cubensis</emphasis>
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</taxonomicName>
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</td>
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</tr>
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<tr pageId="47" pageNumber="48">
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">-</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">Relatively larger: 12.1-13.3 mm. Elytral reticulation much more finely impressed, reticulation of medially disc very weakly impressed composed of irregularly shaped sculpticells which are more transversely oriented; Metacoxae with punctures more shallowly impressed, decreased in number the metacoxal wings, only present on the posterior half. Jamaica</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">
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<taxonomicName authorityName="Ochs" authorityYear="1938" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus longimanus subsp. jamaicensis" order="Coleoptera" pageId="47" pageNumber="48" phylum="Arthropoda" rank="subSpecies" species="longimanus" subSpecies="jamaicensis">
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<emphasis bold="true" italics="true" pageId="47" pageNumber="48">Dineutus longimanus jamaicensis</emphasis>
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</taxonomicName>
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</td>
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</tr>
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<tr pageId="47" pageNumber="48">
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">3</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">Dorsally margin of elytra with lateral greenish sheen; metacoxae with punctures more sparse and more shallowly impressed, barely distinguishable; median lobe of aedeagus with narrow dorsal carina at apex, apically less acuminate and more evenly angled apically. Puerto Rico</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">
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<taxonomicName authorityName="Ochs" authorityYear="1924" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus longimanus subsp. portoricensis" order="Coleoptera" pageId="47" pageNumber="48" phylum="Arthropoda" rank="subSpecies" species="longimanus" subSpecies="portoricensis">
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<emphasis bold="true" italics="true" pageId="47" pageNumber="48">Dineutus longimanus portoricensis</emphasis>
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</taxonomicName>
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</td>
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</tr>
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<tr pageId="47" pageNumber="48">
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">-</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">Margin of elytral without lateral greenish sheen; metacoxae with punctures relatively apparent, but still sparse and shallowly impressed; median lobe of aedeagus without dorsal carina, more acuminate apically. Dominican Republic, Haiti</td>
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<td colspan="1" pageId="47" pageNumber="48" rowspan="1">
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<taxonomicName authority="longimanus" authorityName="longimanus (Olivier" authorityYear="1795" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus longimanus subsp. longimanus" order="Coleoptera" pageId="47" pageNumber="48" phylum="Arthropoda" rank="subSpecies" species="longimanus" subSpecies="longimanus">
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<emphasis bold="true" italics="true" pageId="47" pageNumber="48">Dineutus longimanus longimanus</emphasis>
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</taxonomicName>
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</td>
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</tr>
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</table>
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |