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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. &amp; Miller, Kelly B." docDate="2015" docId="44F918F19AEC47766E29AAF3A987D140" 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 assimilis" docType="treatment" docVersion="5" id="FC4DC947FF97FF86190BFFD8B82CAB56" lastPageNumber="29" masterDocId="FC4DC947FF97FF86190BFFD8B82CAB56" masterDocTitle="The New World whirligig beetles of the genus Dineutus Macleay, 1825 (Coleoptera, Gyrinidae, Gyrininae, Dineutini)" masterLastPageNumber="135" masterPageNumber="1" pageNumber="26" updateTime="1668159852297" updateUser="ExternalLinkService">
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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:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Gustafson, Grey T.</mods:namePart>
<mods:affiliation>Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131, USA</mods:affiliation>
<mods:nameIdentifier type="email">gtgustafson@gmail.com</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Miller, Kelly B.</mods:namePart>
<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:title>ZooKeys</mods:title>
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<mods:date>2015</mods:date>
<mods:detail type="pubDate">
<mods:number>2015-01-23</mods:number>
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<mods:detail type="volume">
<mods:number>476</mods:number>
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<mods:url>http://dx.doi.org/10.3897/zookeys.476.8630</mods:url>
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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="ZooBank">086D71AF8A294F028559C2E0456B5C5B</mods:identifier>
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<mods:identifier type="Zenodo-Dep">578702</mods:identifier>
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<treatment ID-GBIF-Taxon="152057935" LSID="urn:lsid:plazi:treatment:44F918F19AEC47766E29AAF3A987D140" httpUri="http://treatment.plazi.org/id/44F918F19AEC47766E29AAF3A987D140" lastPageId="28" lastPageNumber="29" pageId="25" pageNumber="26">
<subSubSection pageId="25" pageNumber="26" type="nomenclature">
<paragraph pageId="25" pageNumber="26">
<taxonomicName LSID="44F918F1-9AEC-4776-6E29-AAF3A987D140" authority="(Kirby, 1837)" baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">Dineutus assimilis (Kirby, 1837)</taxonomicName>
<figureCitation captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Dineutus assimilis. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="25" pageNumber="26">Figures 8</figureCitation>
<figureCitation captionStart="Figure 9" captionStartId="F9" captionText="Figure 9. Dineutus assimilis. 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="25" pageNumber="26">, 9</figureCitation>
<figureCitation captionStart="Figure 52" captionStartId="F52" captionText="Figure 52. General distribution map. A Dineutus assimilis B Dineutus hornii C Dineutus nigrior D Dineutus discolor and Dineutus angustus." pageId="25" pageNumber="26">, 52</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="25" pageNumber="26" type="reference_group">
<paragraph pageId="25" pageNumber="26">
<taxonomicName class="Insecta" family="Gyrinidae" genus="Cyclinus" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Cyclinus assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">Cyclinus assimilis</taxonomicName>
Kirby 1837: 78, [
<taxonomicName authorityName="Linnaeus" authorityYear="1767" class="Insecta" family="Gyrinidae" genus="Gyrinus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gyrinus americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Gyrinus americanus</emphasis>
</taxonomicName>
: Fabiricus 1775: 235 misidentified], [
<taxonomicName class="Insecta" family="Gyrinidae" genus="Cyclous" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Cyclous americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Cyclous americanus</emphasis>
</taxonomicName>
: Dejean 1833: 58 misidentified],
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutes" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dineutes assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutes assimilis</emphasis>
</taxonomicName>
:
<bibRefCitation author="Aube, C" journalOrPublisher="Paris" pageId="91" pageNumber="92" refId="B4" refString="Aube, C, 1838. Species general des Hydrocanthares et Gyriniens, par le docteur Ch. Aube; pour faire suite au species general des Coleopteres de la collection de M. Le Comte Dejean. Paris" title="Species general des Hydrocanthares et Gyriniens, par le docteur Ch. Aube; pour faire suite au species general des Coleopteres de la collection de M. Le Comte Dejean" year="1838">
<normalizedToken originalValue="Aubé">Aube</normalizedToken>
1838
</bibRefCitation>
b: 778, [
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus americanus</emphasis>
</taxonomicName>
:
<bibRefCitation author="LeConte, JL" journalOrPublisher="Smithsonian Miscellaneous Collections" pageId="93" pageNumber="94" pagination="1 - 56" refId="B59" refString="LeConte, JL, 1863. List of the Coleoptera of North America. Smithsonian Miscellaneous Collections 6: 1 - 56" title="List of the Coleoptera of North America." volume="6" year="1863">LeConte 1863</bibRefCitation>
: 18 misidentified],
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus assimilis</emphasis>
</taxonomicName>
:
<bibRefCitation author="LeConte, JL" journalOrPublisher="Proceedings of the Academy of Natural Sciences of Philadelphia" pageId="93" pageNumber="94" pagination="365 - 373" refId="B60" refString="LeConte, JL, 1868. The Gyrinidae of America, north of Mexico. Proceedings of the Academy of Natural Sciences of Philadelphia 20: 365 - 373" title="The Gyrinidae of America, north of Mexico." volume="20" year="1868">LeConte 1868</bibRefCitation>
: 366, [
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutes" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dineutes americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutes americanus</emphasis>
</taxonomicName>
:
<bibRefCitation author="Regimbart, M" journalOrPublisher="Annales de la Societe entomologique de France" pageId="95" pageNumber="96" pagination="379 - 458" refId="B103" refString="Regimbart, M, 1882. Essai monographique de la famille des Gyrinidae. 1e partie. In: Annales de la Societe entomologique de France.: 379 - 458" title="Essai monographique de la famille des Gyrinidae. 1 e partie" volumeTitle="Annales de la Societe entomologique de France." year="1882">
<normalizedToken originalValue="Régimbart">Regimbart</normalizedToken>
1882
</bibRefCitation>
: 415 misidentified],
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutes" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dineutes assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutes assimilis</emphasis>
</taxonomicName>
:
<bibRefCitation author="Roberts, CH" journalOrPublisher="Transactions of the American Entomological Society" pageId="95" pageNumber="96" pagination="279 - 288" refId="B107" refString="Roberts, CH, 1895. The species of Dineutes of America north of Mexico. Transactions of the American Entomological Society 22: 279 - 288" title="The species of Dineutes of America north of Mexico." volume="22" year="1895">Roberts 1895</bibRefCitation>
: 285, [
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutes" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dineutes americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutes americanus</emphasis>
</taxonomicName>
:
<bibRefCitation author="Regimbart, M" journalOrPublisher="Annales de la Societe entomologique de France" pageId="95" pageNumber="96" pagination="663 - 737" refId="B106" refString="Regimbart, M, 1907. Essai monographique de la famille des Gyrinidae. 3e supplement. Annales de la Societe entomologique de France 76: 663 - 737" title="Essai monographique de la famille des Gyrinidae. 3 e supplement." volume="76" year="1907">
<normalizedToken originalValue="Régimbart">Regimbart</normalizedToken>
1907
</bibRefCitation>
: 138 misidentified],
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutes" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dineutes assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutes assimilis</emphasis>
</taxonomicName>
:
<bibRefCitation author="Ahlwarth, K" journalOrPublisher="Junk, W., Berlin" pageId="91" pageNumber="92" refId="B1" refString="Ahlwarth, K, 1910. Gyrinidae. Coleopterorum Catalogus. Junk, W., Berlin" title="Gyrinidae. Coleopterorum Catalogus." year="1910">Ahlwarth 1910</bibRefCitation>
: 4, [
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutes" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dineutes americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutes americanus</emphasis>
</taxonomicName>
: Zimmermann 1917: 137 misidentified],
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutes" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dineutes assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutes assimilis</emphasis>
</taxonomicName>
:
<bibRefCitation author="Leng, CW" journalOrPublisher="Bulletin of the American Museum of Natural History" pageId="93" pageNumber="94" pagination="73 - 116" refId="B68" refString="Leng, CW, Mutchler, AJ, 1918. Article III. - Insects of Florida V. The water beetles. Bulletin of the American Museum of Natural History 38: 73 - 116" title="Article III. - Insects of Florida V. The water beetles." volume="38" year="1918">Leng and Mutchler 1918</bibRefCitation>
: 98, [
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutes" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dineutes americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutes americanus</emphasis>
</taxonomicName>
: Leng 1920: 82 misidentified],
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus (Cyclinus) assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis" subGenus="Cyclinus">Dineutus (Cyclinus) assimilis</taxonomicName>
:
<bibRefCitation author="Hatch, MH" journalOrPublisher="Papers of the Michigan Academy of Science, Arts and Letters" pageId="92" pageNumber="93" pagination="429 - 467" refId="B41" refString="Hatch, MH, 1925b. The phylogeny and phylogenetic tendencies of Gyrinidae. Papers of the Michigan Academy of Science, Arts and Letters V: 429 - 467" title="The phylogeny and phylogenetic tendencies of Gyrinidae." volume="V" year="1925 b">Hatch 1925b</bibRefCitation>
: 447 subjective synonym, [
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus (Cyclous) americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus" subGenus="Cyclous">Dineutus (Cyclous) americanus</taxonomicName>
:
<bibRefCitation author="Hatch, MH" journalOrPublisher="Bulletin of the Brooklyn Entomological Society" pageId="92" pageNumber="93" pagination="27 - 28" refId="B43" refString="Hatch, MH, 1927. Notes on the biology of Dineutus (Gyrinidae). Bulletin of the Brooklyn Entomological Society 22: 27 - 28" title="Notes on the biology of Dineutus (Gyrinidae)." volume="22" year="1927">Hatch 1927</bibRefCitation>
: 28 misidentified], [
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus americanus</emphasis>
</taxonomicName>
:
<bibRefCitation author="Leng, CW" journalOrPublisher="John D. Sherman, Mount Vernon, N. Y." pageId="93" pageNumber="94" refId="B69" refString="Leng, CW, Mutchler, AJ, 1927. Supplement 1919 - 1924 to Catalogue of the Coleoptera of America, North of Mexico. John D. Sherman, Mount Vernon, N.Y." title="Supplement 1919 - 1924 to Catalogue of the Coleoptera of America, North of Mexico" year="1927">Leng and Mutchler 1927</bibRefCitation>
: 18 misidentified],
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus assimilis</emphasis>
</taxonomicName>
:
<bibRefCitation author="Ochs, G" journalOrPublisher="Koleopterologische Rundschau" pageId="95" pageNumber="96" pagination="34 - 42" refId="B92" refString="Ochs, G, 1927b. Ueber die Gyriniden von Linne und Fabricius. Koleopterologische Rundschau 13: 34 - 42" title="Ueber die Gyriniden von Linne und Fabricius." volume="13" year="1927 b">Ochs 1927b</bibRefCitation>
: 36, [
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus americanus</emphasis>
</taxonomicName>
:
<bibRefCitation author="Leonard, MD" journalOrPublisher="Cornell University Agricultural Experiment Station, Ithaca, New York" pageId="93" pageNumber="94" publicationUrl="10.5962/bhl.title.66369" refId="B70" refString="Leonard, MD, 1928. A List of the Insects of New York with a list of the spiders and certain other allied groups. Cornell University Agricultural Experiment Station, Ithaca, New York, DOI: 10.5962/bhl.title.66369" title="A List of the Insects of New York with a list of the spiders and certain other allied groups." url="10.5962/bhl.title.66369" year="1928">Leonard 1928</bibRefCitation>
: 263 misidentified],
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus assimilis</emphasis>
</taxonomicName>
:
<bibRefCitation author="Ochs, G" journalOrPublisher="Journal of the New York Entomological Society" pageId="95" pageNumber="96" pagination="135 - 138" refId="B94" refString="Ochs, G, 1930. Remarks on &quot;A list of the insects of New York&quot;. Journal of the New York Entomological Society 38: 135 - 138" title="Remarks on &quot; A list of the insects of New York &quot;." volume="38" year="1930">Ochs 1930</bibRefCitation>
: 135,
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus (Cyclinus) assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis" subGenus="Cyclinus">Dineutus (Cyclinus) assimilis</taxonomicName>
: Hatch 1930: 18,
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus assimilis</emphasis>
</taxonomicName>
:
<bibRefCitation author="Gordon, RD" journalOrPublisher="North Dakota Insects" pageId="91" pageNumber="92" pagination="1 - 53" refId="B35" refString="Gordon, RD, Post, RL, 1965. North Dakota water beetles. North Dakota Insects 5: 1 - 53" title="North Dakota water beetles." volume="5" year="1965">Gordon and Post 1965</bibRefCitation>
: 27, [
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus americanus</emphasis>
</taxonomicName>
:
<bibRefCitation author="Ciegler, JC" journalOrPublisher="Clemson University Public Service Pub." pageId="91" pageNumber="92" refId="B13" refString="Ciegler, JC, Morse, JC, Wheeler, AG, Activities, CUPS, 2003. Water beetles of South Carolina: (Coleoptera: Gyrinidae, Haliplidae, Noteridae, Dytiscidae, Hydrophilidae, Hydraenidae, Scirtidae, Elmidae, Dryopidae, Limnichidae, Heteroceridae, Psephenidae, Ptilodactylidae, and Chelonariidae). Clemson University Public Service Pub." title="Water beetles of South Carolina: (Coleoptera: Gyrinidae, Haliplidae, Noteridae, Dytiscidae, Hydrophilidae, Hydraenidae, Scirtidae, Elmidae, Dryopidae, Limnichidae, Heteroceridae, Psephenidae, Ptilodactylidae, and Chelonariidae)" year="2003">Ciegler et al. 2003</bibRefCitation>
: 14 misidentified].
</paragraph>
</subSubSection>
<subSubSection pageId="25" pageNumber="26" type="type locality">
<paragraph pageId="25" pageNumber="26">Type locality.</paragraph>
<paragraph pageId="25" pageNumber="26">&quot;Lat. 54°&quot;.</paragraph>
</subSubSection>
<subSubSection pageId="25" pageNumber="26" type="specimens examined">
<paragraph pageId="25" pageNumber="26">Specimens examined.</paragraph>
<paragraph pageId="25" pageNumber="26">273</paragraph>
</subSubSection>
<subSubSection pageId="25" pageNumber="26" type="type material">
<paragraph pageId="25" pageNumber="26">Type material.</paragraph>
<paragraph pageId="25" pageNumber="26">
Not examined. Having examined the type for
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus americanus</emphasis>
</taxonomicName>
, the most confused name with
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus assimilis</emphasis>
</taxonomicName>
, it seems that the identity of
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="25" pageNumber="26">Dineutus assimilis</emphasis>
</taxonomicName>
is secure, so no attempt to loan the type was made.
</paragraph>
</subSubSection>
<subSubSection pageId="25" pageNumber="26" type="material examined">
<paragraph pageId="25" pageNumber="26">Material examined.</paragraph>
<paragraph pageId="25" pageNumber="26">
<emphasis bold="true" pageId="25" pageNumber="26">CANADA:</emphasis>
<emphasis bold="true" pageId="25" pageNumber="26">Ontario:</emphasis>
Kent Co., Tilbury, vi.1960, leg. K. Stephan (1 ex. FSCA).
<emphasis bold="true" pageId="25" pageNumber="26">U.S.A.:</emphasis>
<emphasis bold="true" pageId="25" pageNumber="26">Alabama:</emphasis>
Perry Co., Boguechitto Creek,19.vi.1962, leg. F.N. Young, #2047 (1 ex. FSCA); Monroe Co., 10km W Bowles,
<geoCoordinate degrees="31" direction="north" minutes="33.094" orientation="latitude" precision="1" value="31.551567">31°33.094'N</geoCoordinate>
,
<geoCoordinate degrees="86" direction="west" minutes="59.956" orientation="longitude" precision="1" value="-86.99927">86°59.956'W</geoCoordinate>
, 11.v.2006, leg. K.B. Miller, KBM1105063 (1 ex. MSBA);
<emphasis bold="true" pageId="25" pageNumber="26">Arkansas:</emphasis>
Benton Co., State Fish Hatchery, 12.iv.1974 (1 ex. FSCA); Conway Co., I-40 Rest Area, 181, 9mi W of State Line, 11.v.1983, leg. L.R. Davis Jr., (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Florida:</emphasis>
Alachua Co., Gainesville, 17.vi.1947 (1 ex. FSCA); 2 mi NW Gainesville, 20.iv.1974, leg. J.B. Heppner, blacklight (1 ex. FSCA); pond nr. River Styx, 1.viii.1975, leg. J.B. Heppner (1 ex. FSCA);
<normalizedToken originalValue="Newmans">Newman's</normalizedToken>
Lake, 25.vii.1975, leg. J.B. Heppner (7 ex. FSCA); Columbia Co.,
<normalizedToken originalValue="OLeno">O'Leno</normalizedToken>
State Park, 12.ii.1966, leg. F.W. Mead (1 ex. FSCA); Highlands Co., Archbold Biol. Sta., 24.iv.1976, leg. L.L. Lampert Jr. (1 ex. FSCA); Hillsborough Co., 6 mi N Tampa, 3.vi.1978, leg. R. Milton (1 ex. FSCA); Leon Co., SR 373 1 mi SW SR 371, Tallahassee, 16.x.1976 (1 ex. FSCA); Liberty Co., Torreya State Park, 15.v.1970, leg. H. Greenbaum, blacklight/sheet (1 ex. FSCA); Torreya State Park, 25.v.1980, leg. J. Watts, attr. To U.V. (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Georgia:</emphasis>
Rabun Co., lake in BRM St. Pk., 2.vii.1982, leg. F.N. Young, #2965 (3 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Indiana:</emphasis>
Brown Co., nr Crooked Creek, 1.x.1977, leg. F.N. Young (1 ex. FSCA); Crawford Co., Grantsburg, 18.vii.1965, leg. D. Eckert, Blacklight trap (3 ex. FSCA); Ford Co., New Albany, 5.vii.1966, leg. C.E. White, Blacklight trap (2 ex. FSCA); Imperanon Co., 18.viii.1987, leg. N.M. Downie (1 ex. FSCA); Johnson Co., Peoga, 6.v.1966, leg. E. White (7 ex. FSCA); Knox Co., White River, nr Kinora, 12.ix.1964, leg. F.N. Young, #2168 (1 ex. FSCA); Slough along White River, at Edwardsport, 15.iv.1960, leg. F.N. Young, #1687 (1 ex. FSCA); Marion Co., Indianapolis, 15.vii.1963, leg. E. White (1 ex. FSCA); Camp Belzer, BSA, Indianapolis, 12.vii.1966, leg. C.E. White (2 ex. FSCA); Monroe Co., Bloomington, 6.v.1953, leg. R.M. Laycock (1 ex. FSCA); Bloomington, 2.vi.1991, leg. F.N. Young, BLT (1 ex. FSCA); Posey Co., Hovey Lake, 15.viii.1965, leg. C.E. White, Blacklight trap (3 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Iowa:</emphasis>
Boone Co., Ledges State Park, 2.v.1955, leg. M.D. Huffman (3 ex. FSCA); same as previous except: 2.v.1985 (1 ex. FSCA); same as previous except: 1.x.1961, leg. J.J. Dinsmore (3 ex. FSCA); same as previous except: 1.xi.1961 (1 ex. FSCA); Linn Co., Cedar Rapids,
<normalizedToken originalValue="“1536”">&quot;1536&quot;</normalizedToken>
(1 ex. MTEC); Plymouth Co., Le Mars, 12.v.1965, leg. B. Perrill (1 ex. FSCA); Story Co., Ames, 15.iv.1930, leg. H.B. Mills (2 ex. MTEC); same as previous except: 24.iv.1939, leg. C. Haight (3 ex. MTEC);
<emphasis bold="true" pageId="25" pageNumber="26">Kansas:</emphasis>
Douglas Co., Lawrence, 24.ix.1921, leg. C. Brown (2 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Maryland:</emphasis>
Kent Co., Chestertown, 13.v.1969, leg. T.E. Rogers (1 ex. FSCA); Montgomery Co., Seneca, 27.v.1951, leg. G.H. Nelson (2 ex. FSCA); Prince
<normalizedToken originalValue="Georges">George's</normalizedToken>
Co., College Park, 17.iv.1948, leg. B.K. Dozier, in pond (2 ex. FSCA); College Park, 29.iv.1948, leg. H.L. Dozier (1 ex. FSCA); College Park, 14.x.1948, leg. R. Mansueti (1 ex. FSCA); College Park, 25.iv.1953, leg. G.H. Nelson, to light (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Massachusetts:</emphasis>
Norfolk Co., Dedham, 11.vi.1920 (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Minnesota:</emphasis>
Morner Co., nr Grand Meadow, roadside park, 18.viii.1965, leg. R.H. Arnett, in dammed pond (13 ex. FSCA); Morula Co., nr Grand Meadow, 18.viii.1965, leg. R.H. Arnett Jr., roadside park in damned pond (40 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Mississippi:</emphasis>
Marshall Co., Byhalia, 10.v.1983, leg. L.R. Davis Jr., 11:15PM at lights (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Missouri:</emphasis>
Calloway Co., 3 mi W Portland on Rt 94, temp pool, 12.vii.1973, leg. S.O. Swadener, Lot No.730712A (1 ex. FSCA); Carter Co., Van Buren, 22.vi.1955 (2 ex. FSCA); Clay Co., nr Missouri River, E of Birmingham, 2.v.1968, leg. J.R. Heitzman (1 ex. FSCA); Dent Co., Montauk St. Pk., 18.v.1978, leg. S.O. Swadener, Lot No.730518-A (1 ex. FSCA); Douglas Co., Cartwright Tree Farm, 10 mi E of Cabool, walnut, apple, &amp; peach orchards, Deciduous Ozark Forest, open fields &amp; Indian Creek, 14.vii.1991, leg. H.M. Webber, at U.V. light (1 ex. FSCA); Franklin Co., 3.vii.1978, leg. K. Jackson, in lake (1 ex. FSCA); same as previous except: at light (1 ex. FSCA); Green Co., Willard, 6.vii.1929, leg. K. Nime, pond (1 ex. FSCA); Jackson Co., Adair Park, Independence, 3.v.1968, leg. J.R. Heitzman (1 ex. FSCA); Vernon Co., Nevada, 10.v.1964, leg. D&amp;J. McReynolds, (1 ex. FSCA); same as previous except: 8.vi.1964 (1 ex. FSCA); same as previous except: 9.v.1972, leg. J.W. McReynolds (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Montana:</emphasis>
Wibaux Co., pond 30 mi N Wibaux, 27.vii.1990, leg. D.L. Gustafson (2 ex. MTEC);
<emphasis bold="true" pageId="25" pageNumber="26">Nebraska:</emphasis>
Cherry Co., McKelvie
<normalizedToken originalValue="Natl">Nat'l</normalizedToken>
For., 30 mi WSW Valentine, 9.vii.1998, leg. A. Ramsdale, at blacklight, at forest margin near sand hills prairie, night (1 ex. MTEC);
<emphasis bold="true" pageId="25" pageNumber="26">New Jersey:</emphasis>
Gloucester Co., Paulsboro, 11.vi.1961, leg. H.L. Dozier (1 ex. FSCA); Ocean Co., Lakehurst, 1.viii.1960, leg. H.L. Dozier (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">New York:</emphasis>
Schuyler Co., Texas Hollow State Wildlife Area, 1.ix.1999, leg. K.B. Miller (5 ex. MSBA); Westchester Co., White Plains, 14.v.1922, leg. E.H.P. Squire, (1 ex. FSCA); same as previous except: 20.v.1923 (1 ex. FSCA); same as previous except: 31.v.1923 (3 ex. FSCA); 10.vi.1923 (4 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">North Carolina:</emphasis>
Jackson Co., Balsam, 6.v.1965, leg. W. Rosenberg (1 ex. FSCA); Macon Co., Watuaga Valley, 28.viii.1987, leg. F.N. Young, #3247A (1 ex. FSCA); Wake Co., Raleigh, Yates Pond, 12.ix.1970, leg. L.L. Lampert (8 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">North Dakota:</emphasis>
Ransom Co., McLeod, 25.vii.1960, leg. J. Onsager (1 ex. MTEC);
<emphasis bold="true" pageId="25" pageNumber="26">Ohio:</emphasis>
Delaware Co., 4.x.1958, leg. E.I. Hazard (2 ex. FSCA) Franklin Co., Columbus, 20.v.1984, leg. M.A. Ivie (1 ex. MTEC); same as previous except: 1.viii.1985, leg. R.S. Miller (9 ex. MTEC); same as previous except: 7.viii.1985 (18 ex. MTEC); Columbus, Mere Pond, 23.viii.1985, leg. R.S. Miller (32 ex. MTEC); Lucas Co., nr West Toledo, Schwamberger Prarie, 10.vi.1984, leg. J.B. Stribling, UV light (1 ex. MTEC); Williams Co., Mudlake, 18.vii.1984, leg. J.A. Shuey (1 ex. MTEC); Muskingum Co., Zanesville, 2.v.1920, leg. A.E. Miller (3 ex. FSCA); Ross Co., Chillicothe, 1.viii.1992, leg. A.E. Miller (3 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Oklahoma:</emphasis>
Catoosa, 26.iv.1938, leg. E.K. Waering (1 ex. FSCA); same as previous except: 26.iv.1939 (1 ex. FSCA); same as previous except: 27.iii.1939 (1 ex. FSCA); Comanche Co., Ft. Still, 20.vi.1974, leg. T.E. Rogers (2 ex. FSCA); Latimer Co., 5 mi W Red Oak, v.1980, leg. K.H. Stephan (1 ex. FSCA); Latimer Co., 5 mi W Red Oak, ix.1980, leg. K.H. Stephan (10 ex. FSCA); Payne Co., Stillwater, 14.vii.1976 (1 ex. FSCA); nr Lake Carl Blackwell, 16.viii.1976 (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">South Carolina:</emphasis>
Greenville Co., Greenville, 9.ix.1954, leg. H.L. Dozier (1 ex. FSCA); Newberry Co., 12.v.1968, leg. L.L. Lampert (1 ex. FSCA); Newberry Co., Jalapa, 24.iv.1973, leg. L.L. Lampert, light (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Tennessee:</emphasis>
Cuba, 25.v.1964, leg. K. Stephan (1 ex. FSCA); Obion Co., Reelfoot Lake S. P., 1/2 mi SE of Samburg, 4.vii.1983, leg. C.P. Withrow (2 ex. MTEC);
<emphasis bold="true" pageId="25" pageNumber="26">Texas:</emphasis>
Crosby Co., White River Lake, SW Area, 24.ix.1997, leg. Wappes &amp; Huether (1 ex. FSCA); Runnels Co., Miles, 28.vi.1939, leg. H. Wilee Jr. (1 ex. FSCA); Waxahachie Co., Atlanta, 26.v.1964, leg. K. Stephan (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Virginia:</emphasis>
Rockingham Co., Craney Island, 7.x.1984, leg. C.L. Staines Jr. (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">West Virginia:</emphasis>
Pocahontas Co., Cranberry Glades, 1213-1219 m, 27.vi.1967, leg. H.V. Weems, blacklight (1 ex. FSCA);
<emphasis bold="true" pageId="25" pageNumber="26">Wisconsin:</emphasis>
Dane Co., 18.v.1952, leg. D.H. Habeck (1 ex. FSCA).
</paragraph>
<paragraph pageId="25" pageNumber="26">
<emphasis bold="true" pageId="25" pageNumber="26">No locality information:</emphasis>
<normalizedToken originalValue="“Station.”">&quot;Station.&quot;</normalizedToken>
, 8.v.1901, &quot;Hatch Ex.&quot; (1 ex. MTEC);
<normalizedToken originalValue="“E-2”">&quot;E-2&quot;</normalizedToken>
(1 ex. FSCA).
</paragraph>
</subSubSection>
<subSubSection pageId="26" pageNumber="27" type="diagnosis">
<paragraph pageId="26" pageNumber="27">
<pageBreakToken pageId="26" pageNumber="27" start="start">Diagnosis</pageBreakToken>
.
</paragraph>
<paragraph pageId="26" pageNumber="27">
Male (Fig.
<figureCitation captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Dineutus assimilis. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="26" pageNumber="27">8C-D</figureCitation>
): Size: 9.93-11.1 mm. Body form narrowly oval; elytral apices with sutural angle produced into a point, rarely with point reduced and elytra appearing completely rounded, elytral striae faint basally becoming more evident apically and laterally; profemora without sub-apicoventral tooth; protibia wedgeshaped, without distolateral margin produced; mesotarsal claws similar in size, with ventral margin straight; venter darkly colored, reddish brown to black often with a metallic shine present, epipleura similarly colored as thorax and abdomen; Aedeagus (Fig.
<figureCitation captionStart="Figure 9" captionStartId="F9" captionText="Figure 9. Dineutus assimilis. 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="26" pageNumber="27">9A, B, D</figureCitation>
) median lobe in dorsal view acuminate in apical 1/5, apex narrowed and shortly rounded, in lateral view apex of median lobe barely curved dorsally, in ventral view sperm-groove parallel sided for near entirety of length, apex flatly rounded, parameres very weakly rounded laterally in apical 1/3.
</paragraph>
<paragraph pageId="26" pageNumber="27">
Female (Fig.
<figureCitation captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Dineutus assimilis. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="26" pageNumber="27">8A-B</figureCitation>
): Size: 10-11.3 mm. Body form narrowly oval; elytral apices produced and rounded, with sutural angle produced into a point, apicolateral sinuation strong, elytral striae faint basally, becoming more evident apically and laterally; profemora without sub-apicoventral tooth; protibiae laterally weakly curved, distolateral margin not expanded; venter darkly colored, reddish brown to black, often with metallic luster, epipleura similarly colored as thorax and abdomen.
</paragraph>
<caption pageId="26" pageNumber="27" start="Figure 8" startId="F8">
<paragraph pageId="26" pageNumber="27">
<emphasis bold="true" pageId="26" pageNumber="27">Figure 8.</emphasis>
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
.
<emphasis bold="true" pageId="26" pageNumber="27">A</emphasis>
♀ dorsal habitus
<emphasis bold="true" pageId="26" pageNumber="27">B</emphasis>
♀ ventral habitus
<emphasis bold="true" pageId="26" pageNumber="27">C</emphasis>
♂ dorsal habitus
<emphasis bold="true" pageId="26" pageNumber="27">D</emphasis>
♂ ventral habitus. All scale bars ≈ 2 mm.
</paragraph>
</caption>
<caption pageId="26" pageNumber="27" start="Figure 9" startId="F9">
<paragraph pageId="26" pageNumber="27">
<emphasis bold="true" pageId="26" pageNumber="27">Figure 9.</emphasis>
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
.
<emphasis bold="true" pageId="26" pageNumber="27">A</emphasis>
aedeagus dorsal view
<emphasis bold="true" pageId="26" pageNumber="27">B</emphasis>
aedeagus ventral view
<emphasis bold="true" pageId="26" pageNumber="27">C</emphasis>
♂ mesotarsal claws
<emphasis bold="true" pageId="26" pageNumber="27">D</emphasis>
aedeagus lateral view. Scale bar for
<emphasis bold="true" pageId="26" pageNumber="27">C</emphasis>
≈ 0.10 mm all others ≈ 1 mm.
</paragraph>
</caption>
</subSubSection>
<subSubSection lastPageId="27" lastPageNumber="28" pageId="26" pageNumber="27" type="differential diagnosis">
<paragraph pageId="26" pageNumber="27">Differential diagnosis.</paragraph>
<paragraph pageId="26" pageNumber="27">
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
is unique among all North American species of
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus</emphasis>
</taxonomicName>
in the narrowly elongate oval body form, both sexes with the elytral apices more or less regularly rounded with the sutural angles produced, males with the profemora without a sub-apicoventral tooth, a wedge shaped protibia, mesotarsal claws that are similar in shape with their ventral margins straight, and the form of the aedeagus. The species most similar to
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
are
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus hornii</emphasis>
</taxonomicName>
and
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus nigrior</emphasis>
</taxonomicName>
, especially in the form of the females. Males of
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
can be separated from
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus hornii</emphasis>
</taxonomicName>
by the sutural angle of the elytra being regularly produced to a point, although rarely some individuals have the point reduced giving the elytra a regularly rounded look similar to those of
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus hornii</emphasis>
</taxonomicName>
. In such cases, specimens of
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
can be distinguished by the elytral epipleura being colored similarly to the adjacent thoracic and anterior abdominal ventrites (Fig.
<figureCitation captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Dineutus assimilis. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="26" pageNumber="27">8D</figureCitation>
), in contrast with
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus hornii</emphasis>
</taxonomicName>
in which the epipleura is different in color (much lighter) from the rest of the venter (Fig.
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Dineutus hornii. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="26" pageNumber="27">18D</figureCitation>
). The mesotarsal claws can also be used to separate males of
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
(Fig.
<figureCitation captionStart="Figure 9" captionStartId="F9" captionText="Figure 9. Dineutus assimilis. 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="26" pageNumber="27">9C</figureCitation>
) from
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus hornii</emphasis>
</taxonomicName>
(Fig.
<figureCitation captionStart="Figure 19" captionStartId="F19" captionText="Figure 19. Dineutus hornii. 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="26" pageNumber="27">19C</figureCitation>
). In
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
the ventral margins of the claws are straight, whereas in
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus hornii</emphasis>
</taxonomicName>
they are very shallowly curved.
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
also have the ultimate antennomere angled, whereas in
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus hornii</emphasis>
</taxonomicName>
the antennal flagellum is short and thick, with the ultimate antennomere rounded. Males of
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
can be separated from
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus nigrior</emphasis>
</taxonomicName>
in their smaller size (9.9-11.3 mm), more narrow body form, and, most readily, by the mesotarsal claws which are similar in size with straight ventral margins, whereas in
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus nigrior</emphasis>
</taxonomicName>
the mesotarsal claws are distinctly asymmetrical with the anterior claw larger than the posterior and both having the ventral margins shallowly curved. The most reliable way to distinguish between
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
,
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus hornii</emphasis>
</taxonomicName>
and
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus nigrior</emphasis>
</taxonomicName>
is the aedeagus. The median lobe of the aedeagus of
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus assimilis</emphasis>
</taxonomicName>
(Fig.
<figureCitation captionStart="Figure 9" captionStartId="F9" captionText="Figure 9. Dineutus assimilis. 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="26" pageNumber="27">9A</figureCitation>
) is acuminate in the apical 1/5. The aedeagi of both
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus hornii</emphasis>
</taxonomicName>
and
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="26" pageNumber="27">Dineutus nigrior</emphasis>
</taxonomicName>
are more elongate and parallel sided with the median lobe apically narrowed but not acuminate.
</paragraph>
<paragraph pageId="27" pageNumber="28">
<pageBreakToken pageId="27" pageNumber="28" start="start">Females</pageBreakToken>
of
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus assimilis</emphasis>
</taxonomicName>
are more difficult to differentiate from
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus hornii</emphasis>
</taxonomicName>
and
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus nigrior</emphasis>
</taxonomicName>
. Females of
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus assimilis</emphasis>
</taxonomicName>
differ from those of
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus hornii</emphasis>
</taxonomicName>
in the epipleura color being similar to the adjacent thoracic anterior abdominal ventrites, whereas in
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus hornii" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="hornii">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus hornii</emphasis>
</taxonomicName>
the epipleura are lighter in color than the surfaces of the thorax and abdomen (Fig.
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Dineutus hornii. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="27" pageNumber="28">18B</figureCitation>
). The elytral apices of the females of
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus assimilis</emphasis>
</taxonomicName>
are more similar to those of
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus nigrior</emphasis>
</taxonomicName>
. In general
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus assimilis</emphasis>
</taxonomicName>
is smaller (10-11.3 mm) than
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus nigrior</emphasis>
</taxonomicName>
, and also more narrowed in body form. The most reliable way to separate
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus assimilis</emphasis>
</taxonomicName>
from
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus nigrior</emphasis>
</taxonomicName>
is the distal lateral margin of the protibiae. In
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus assimilis</emphasis>
</taxonomicName>
the distal lateral margin is not produced laterally (Fig.
<figureCitation captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Dineutus assimilis. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="27" pageNumber="28">8B</figureCitation>
), but continuously weakly curved, whereas in
<taxonomicName authorityName="Roberts" authorityYear="1895" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus nigrior" order="Coleoptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="nigrior">
<emphasis italics="true" pageId="27" pageNumber="28">Dineutus nigrior</emphasis>
</taxonomicName>
the margin is laterally weakly expanded (Fig.
<figureCitation captionStart="Figure 31" captionStartId="F31" captionText="Figure 31. Dineutus nigrior. A ♀ dorsal habitus B ♀ ventral habitus C ♂ dorsal habitus D ♂ ventral habitus. All scale bars ≈ 2 mm." pageId="27" pageNumber="28">31B</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="27" pageNumber="28" type="distribution">
<paragraph pageId="27" pageNumber="28">Distribution</paragraph>
<paragraph pageId="27" pageNumber="28">
<emphasis bold="true" pageId="27" pageNumber="28">
(Fig.
<figureCitation captionStart="Figure 52" captionStartId="F52" captionText="Figure 52. General distribution map. A Dineutus assimilis B Dineutus hornii C Dineutus nigrior D Dineutus discolor and Dineutus angustus." pageId="27" pageNumber="28">52A</figureCitation>
).
</emphasis>
Southern Canada from British Columbia to Nova Scotia (
<bibRefCitation author="Majka, CG" journalOrPublisher="Zookeys" pageId="94" pageNumber="95" pagination="239 - 260" publicationUrl="10.3897/zookeys.22.216" refId="B75" refString="Majka, CG, 2008. The aquatic Coleoptera of Prince Edward Island, Canada: new records and faunal composition. Zookeys 2: 239 - 260, DOI: 10.3897/zookeys.22.216" title="The aquatic Coleoptera of Prince Edward Island, Canada: new records and faunal composition." url="10.3897/zookeys.22.216" volume="2" year="2008">Majka 2008</bibRefCitation>
;
<bibRefCitation author="Roughley, RE" journalOrPublisher="Agricultural Canada, Ottawa, Ontario" pageId="96" pageNumber="97" publicationUrl="http://www.canacoll.org/Coleo/Checklist/PDF%20files/GYRINIDAE.pdf" refId="B115" refString="Roughley, RE, 1991. Checklist of Beetles of Canada and Alaska. Agricultural Canada, Ottawa, Ontario, http://www.canacoll.org/Coleo/Checklist/PDF%20files/GYRINIDAE.pdf" title="Checklist of Beetles of Canada and Alaska" url="http://www.canacoll.org/Coleo/Checklist/PDF%20files/GYRINIDAE.pdf" year="1991">Roughley 1991</bibRefCitation>
;
<bibRefCitation author="Webster, RP" journalOrPublisher="Zookeys" pageId="96" pageNumber="97" pagination="1 - 10" publicationUrl="10.3897/zookeys.179.2582" refId="B126" refString="Webster, RP, DeMerchant, I, 2012. New Coleoptera records from New Brunswick, Canada: Gyrinidae, Carabidae, and Dytiscidae. Zookeys 179: 1 - 10, DOI: 10.3897/zookeys.179.2582" title="New Coleoptera records from New Brunswick, Canada: Gyrinidae, Carabidae, and Dytiscidae." url="10.3897/zookeys.179.2582" volume="179" year="2012">Webster and DeMerchant 2012</bibRefCitation>
), and east of the Rocky Mountains in the U.S.A. as far south as Texas and Northern Florida (
<bibRefCitation author="Epler, JH" journalOrPublisher="Bureau of Water Resource Protection, Florida Department of Environmental Protection, Tallahassee" pageId="91" pageNumber="92" refId="B18" refString="Epler, JH, 2010. The Water Beetles of Florida - an identification manual for the families Chrysomelidae, Curculionidae, Dryopidae, Dytiscidae, Elmidae, Gyrinidae, Haliplidae, Helophoridae, Hydraenidae, Hydrochidae, Hydrophilidae, Noteridae, Psephenidae, Ptilodactylidae and Scirtidae." title="The Water Beetles of Florida - an identification manual for the families Chrysomelidae, Curculionidae, Dryopidae, Dytiscidae, Elmidae, Gyrinidae, Haliplidae, Helophoridae, Hydraenidae, Hydrochidae, Hydrophilidae, Noteridae, Psephenidae, Ptilodactylidae and Scirtidae" year="2010">Epler 2010</bibRefCitation>
;
<bibRefCitation author="Ferkinhoff, WD" journalOrPublisher="Scientific Publications of the Science Museum of Minnesota" pageId="91" pageNumber="92" pagination="3 - 53" refId="B23" refString="Ferkinhoff, WD, Gunderson, RW, 1983. A key to the whirligig beetles of Minnesota and adjacent states and Canadian provinces (Coleoptera: Gyrinidae). Scientific Publications of the Science Museum of Minnesota 7: 3 - 53" title="A key to the whirligig beetles of Minnesota and adjacent states and Canadian provinces (Coleoptera: Gyrinidae)." volume="7" year="1983">Ferkinhoff and Gunderson 1983</bibRefCitation>
;
<bibRefCitation author="Folkerts, GW" journalOrPublisher="The Coleopterists Bulletin" pageId="91" pageNumber="92" pagination="345 - 347" refId="B27" refString="Folkerts, GW, 1978. A preliminary checklist of the Hydradephaga (Coleoptera) of Alabama. The Coleopterists Bulletin 32: 345 - 347" title="A preliminary checklist of the Hydradephaga (Coleoptera) of Alabama." volume="32" year="1978">Folkerts 1978</bibRefCitation>
;
<bibRefCitation author="Gordon, RD" journalOrPublisher="North Dakota Insects" pageId="91" pageNumber="92" pagination="1 - 53" refId="B35" refString="Gordon, RD, Post, RL, 1965. North Dakota water beetles. North Dakota Insects 5: 1 - 53" title="North Dakota water beetles." volume="5" year="1965">Gordon and Post 1965</bibRefCitation>
;
<bibRefCitation author="Hilsenhoff, WL" journalOrPublisher="Great Lakes Entomologist" pageId="92" pageNumber="93" pagination="77 - 92" refId="B45" refString="Hilsenhoff, WL, 1990. Gyrinidae of Wisconsin, with a key to adults of both sexes and notes on distribution and habitat. Great Lakes Entomologist 23: 77 - 92" title="Gyrinidae of Wisconsin, with a key to adults of both sexes and notes on distribution and habitat." volume="23" year="1990">Hilsenhoff 1990</bibRefCitation>
;
<bibRefCitation author="Malcolm, SE" journalOrPublisher="University of Maine Life Science and Agricultural Experiment Station Technical Bulletin" pageId="94" pageNumber="95" pagination="1 - 49" refId="B77" refString="Malcolm, SE, 1971. The water beetles of Maine: including the families Gyrinidae, Haliplidae, Dytiscidae, Noteridae and Hydrophilidae. University of Maine Life Science and Agricultural Experiment Station Technical Bulletin 48: 1 - 49" title="The water beetles of Maine: including the families Gyrinidae, Haliplidae, Dytiscidae, Noteridae and Hydrophilidae." volume="48" year="1971">Malcolm 1971</bibRefCitation>
;
<bibRefCitation author="Regimbart, M" journalOrPublisher="Annales de la Societe entomologique de France" pageId="95" pageNumber="96" pagination="663 - 737" refId="B106" refString="Regimbart, M, 1907. Essai monographique de la famille des Gyrinidae. 3e supplement. Annales de la Societe entomologique de France 76: 663 - 737" title="Essai monographique de la famille des Gyrinidae. 3 e supplement." volume="76" year="1907">
<normalizedToken originalValue="Régimbart">Regimbart</normalizedToken>
1907
</bibRefCitation>
;
<bibRefCitation author="Roberts, CH" journalOrPublisher="Transactions of the American Entomological Society" pageId="95" pageNumber="96" pagination="279 - 288" refId="B107" refString="Roberts, CH, 1895. The species of Dineutes of America north of Mexico. Transactions of the American Entomological Society 22: 279 - 288" title="The species of Dineutes of America north of Mexico." volume="22" year="1895">Roberts 1895</bibRefCitation>
;
<bibRefCitation author="Sanderson, MW" journalOrPublisher="Aquatic Insects and Oligochaetes of North and South Carolina" pageId="96" pageNumber="97" pagination="10.29 - 10.38" refId="B116" refString="Sanderson, MW, 1982. . Aquatic Insects and Oligochaetes of North and South Carolina Ill: 10.29 - 10.38" volume="Ill" year="1982">Sanderson 1982</bibRefCitation>
;
<bibRefCitation author="Whiteman, NK" journalOrPublisher="Transactions of the American Entomological Society" pageId="96" pageNumber="97" pagination="185 - 243" refId="B128" refString="Whiteman, NK, Sites, RW, 2003. Lentic beetles of the Missouri Prairie Region: habitat and regional associations, with keys to the Hydradephaga. Transactions of the American Entomological Society 129: 185 - 243" title="Lentic beetles of the Missouri Prairie Region: habitat and regional associations, with keys to the Hydradephaga." volume="129" year="2003">Whiteman and Sites 2003</bibRefCitation>
;
<bibRefCitation author="Wood, FE" journalOrPublisher="University of Missouri, Columbia, Missouri" pageId="97" pageNumber="98" refId="B130" refString="Wood, FE, 1962. A synopsis of the genus Dineutus (Coleoptera: Gyrinidae) in the Western Hemisphere. University of Missouri, Columbia, Missouri" title="A synopsis of the genus Dineutus (Coleoptera: Gyrinidae) in the Western Hemisphere" year="1962">Wood 1962</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection lastPageId="28" lastPageNumber="29" pageId="27" pageNumber="28" type="habitat">
<paragraph pageId="27" pageNumber="28">Habitat.</paragraph>
<paragraph lastPageId="28" lastPageNumber="29" pageId="27" pageNumber="28">
This is most widespread and commonly encountered species of
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">
<pageBreakToken pageId="28" pageNumber="29" start="start">Dineutus</pageBreakToken>
</emphasis>
</taxonomicName>
in North America, occupying both lotic and lentic habitats (
<bibRefCitation author="Wood, FE" journalOrPublisher="University of Missouri, Columbia, Missouri" pageId="97" pageNumber="98" refId="B130" refString="Wood, FE, 1962. A synopsis of the genus Dineutus (Coleoptera: Gyrinidae) in the Western Hemisphere. University of Missouri, Columbia, Missouri" title="A synopsis of the genus Dineutus (Coleoptera: Gyrinidae) in the Western Hemisphere" year="1962">Woods 1962</bibRefCitation>
;
<bibRefCitation author="Hilsenhoff, WL" journalOrPublisher="Great Lakes Entomologist" pageId="92" pageNumber="93" pagination="77 - 92" refId="B45" refString="Hilsenhoff, WL, 1990. Gyrinidae of Wisconsin, with a key to adults of both sexes and notes on distribution and habitat. Great Lakes Entomologist 23: 77 - 92" title="Gyrinidae of Wisconsin, with a key to adults of both sexes and notes on distribution and habitat." volume="23" year="1990">Hilsenhoff 1990</bibRefCitation>
;
<bibRefCitation author="Whiteman, NK" journalOrPublisher="Transactions of the American Entomological Society" pageId="96" pageNumber="97" pagination="185 - 243" refId="B128" refString="Whiteman, NK, Sites, RW, 2003. Lentic beetles of the Missouri Prairie Region: habitat and regional associations, with keys to the Hydradephaga. Transactions of the American Entomological Society 129: 185 - 243" title="Lentic beetles of the Missouri Prairie Region: habitat and regional associations, with keys to the Hydradephaga." volume="129" year="2003">Whiteman and Sites 2003</bibRefCitation>
). The first author has collected this species in a secondary growth deciduous forest, Baldwin Woods, near Baldwin, Kansas, in a large forest pond with a muddy bottom, with plenty of leaf detritus and several fallen emergent trees. Here
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus assimilis</emphasis>
</taxonomicName>
was found in large numbers near the shore, with others often exploring deeper regions of the pond. In New Brunswick, Canada,
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus assimilis</emphasis>
</taxonomicName>
was collected in similar habitats, the margins of ponds with emergent vegetation within forests composed of red oak and red maple (
<bibRefCitation author="Webster, RP" journalOrPublisher="Zookeys" pageId="96" pageNumber="97" pagination="1 - 10" publicationUrl="10.3897/zookeys.179.2582" refId="B126" refString="Webster, RP, DeMerchant, I, 2012. New Coleoptera records from New Brunswick, Canada: Gyrinidae, Carabidae, and Dytiscidae. Zookeys 179: 1 - 10, DOI: 10.3897/zookeys.179.2582" title="New Coleoptera records from New Brunswick, Canada: Gyrinidae, Carabidae, and Dytiscidae." url="10.3897/zookeys.179.2582" volume="179" year="2012">Webster and DeMerchant 2012</bibRefCitation>
).
<bibRefCitation author="Webster, RP" journalOrPublisher="Zookeys" pageId="96" pageNumber="97" pagination="1 - 10" publicationUrl="10.3897/zookeys.179.2582" refId="B126" refString="Webster, RP, DeMerchant, I, 2012. New Coleoptera records from New Brunswick, Canada: Gyrinidae, Carabidae, and Dytiscidae. Zookeys 179: 1 - 10, DOI: 10.3897/zookeys.179.2582" title="New Coleoptera records from New Brunswick, Canada: Gyrinidae, Carabidae, and Dytiscidae." url="10.3897/zookeys.179.2582" volume="179" year="2012">Webster and DeMerchant (2012)</bibRefCitation>
also found
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus assimilis</emphasis>
</taxonomicName>
in black spruce and tamarack bogs. This species has also been collected in other lentic situations from the Prairie Region of Missouri, where
<bibRefCitation author="Whiteman, NK" journalOrPublisher="Transactions of the American Entomological Society" pageId="96" pageNumber="97" pagination="185 - 243" refId="B128" refString="Whiteman, NK, Sites, RW, 2003. Lentic beetles of the Missouri Prairie Region: habitat and regional associations, with keys to the Hydradephaga. Transactions of the American Entomological Society 129: 185 - 243" title="Lentic beetles of the Missouri Prairie Region: habitat and regional associations, with keys to the Hydradephaga." volume="129" year="2003">Whiteman and Sites (2003)</bibRefCitation>
found specimens associated with the following plant taxa:
<taxonomicName genus="Brasneia" lsidName="Brasneia" pageId="28" pageNumber="29" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Brasneia</emphasis>
</taxonomicName>
,
<taxonomicName class="Dicotyledoneae" family="Ceratophyllaceae" genus="Ceratophyllum" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Ceratophyllum" order="Ranunculales" pageId="28" pageNumber="29" phylum="Angiospermae" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Ceratophyllum</emphasis>
</taxonomicName>
,
<taxonomicName class="Monocotyledoneae" family="Juncaceae" genus="Juncus" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Juncus" order="Juncales" pageId="28" pageNumber="29" phylum="Angiospermae" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Juncus</emphasis>
</taxonomicName>
,
<taxonomicName class="Dicotyledoneae" family="Fabaceae" genus="Lespedeza" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Lespedeza" order="Rosales" pageId="28" pageNumber="29" phylum="Angiospermae" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Lespedeza</emphasis>
</taxonomicName>
,
<taxonomicName class="Insecta" family="Cerambycidae" genus="Ludwigia" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Ludwigia" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Ludwigia</emphasis>
</taxonomicName>
,
<taxonomicName class="Dicotyledoneae" family="Polygonaceae" genus="Polygonum" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Polygonum" order="Polygonales" pageId="28" pageNumber="29" phylum="Angiospermae" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Polygonum</emphasis>
</taxonomicName>
,
<taxonomicName class="Monocotyledoneae" family="Potamogetonaceae" genus="Potamogeton" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Potamogeton" order="Helobiae" pageId="28" pageNumber="29" phylum="Angiospermae" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Potamogeton</emphasis>
</taxonomicName>
,
<taxonomicName class="Aves" family="Sagittariidae" genus="Sagittaria" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Sagittaria" order="Accipitriformes" pageId="28" pageNumber="29" phylum="Chordata" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Sagittaria</emphasis>
</taxonomicName>
,
<taxonomicName class="Magnoliopsida" family="Poaceae" genus="Typha" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Typha" order="Poales" pageId="28" pageNumber="29" phylum="Angiospermae" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Typha</emphasis>
</taxonomicName>
,
<taxonomicName class="Monocotyledoneae" family="Cyperaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Cyperales" pageId="28" pageNumber="29" phylum="Angiospermae" rank="family">Cyperaceae</taxonomicName>
, and
<taxonomicName class="Magnoliopsida" family="Poaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="" order="Poales" pageId="28" pageNumber="29" phylum="Angiospermae" rank="family">Poaceae</taxonomicName>
. This species also comes to ultraviolet light (
<bibRefCitation author="Webster, RP" journalOrPublisher="Zookeys" pageId="96" pageNumber="97" pagination="1 - 10" publicationUrl="10.3897/zookeys.179.2582" refId="B126" refString="Webster, RP, DeMerchant, I, 2012. New Coleoptera records from New Brunswick, Canada: Gyrinidae, Carabidae, and Dytiscidae. Zookeys 179: 1 - 10, DOI: 10.3897/zookeys.179.2582" title="New Coleoptera records from New Brunswick, Canada: Gyrinidae, Carabidae, and Dytiscidae." url="10.3897/zookeys.179.2582" volume="179" year="2012">Webster and DeMerchant 2012</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="28" pageNumber="29" type="discussion">
<paragraph pageId="28" pageNumber="29">Discussion.</paragraph>
<paragraph pageId="28" pageNumber="29">
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus assimilis</emphasis>
</taxonomicName>
is the most commonly encountered species of
<taxonomicName class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus</emphasis>
</taxonomicName>
in North America, and has one of the largest ranges of any North American species (Fig.
<figureCitation captionStart="Figure 52" captionStartId="F52" captionText="Figure 52. General distribution map. A Dineutus assimilis B Dineutus hornii C Dineutus nigrior D Dineutus discolor and Dineutus angustus." pageId="28" pageNumber="29">52A</figureCitation>
), often erroneously listed under the name
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus americanus</emphasis>
</taxonomicName>
, even recently (e.g.
<bibRefCitation author="Ciegler, JC" journalOrPublisher="Clemson University Public Service Pub." pageId="91" pageNumber="92" refId="B13" refString="Ciegler, JC, Morse, JC, Wheeler, AG, Activities, CUPS, 2003. Water beetles of South Carolina: (Coleoptera: Gyrinidae, Haliplidae, Noteridae, Dytiscidae, Hydrophilidae, Hydraenidae, Scirtidae, Elmidae, Dryopidae, Limnichidae, Heteroceridae, Psephenidae, Ptilodactylidae, and Chelonariidae). Clemson University Public Service Pub." title="Water beetles of South Carolina: (Coleoptera: Gyrinidae, Haliplidae, Noteridae, Dytiscidae, Hydrophilidae, Hydraenidae, Scirtidae, Elmidae, Dryopidae, Limnichidae, Heteroceridae, Psephenidae, Ptilodactylidae, and Chelonariidae)" year="2003">Ciegler et al. 2003</bibRefCitation>
). As early as 1927,
<bibRefCitation author="Ochs, G" journalOrPublisher="Koleopterologische Rundschau" pageId="95" pageNumber="96" pagination="34 - 42" refId="B92" refString="Ochs, G, 1927b. Ueber die Gyriniden von Linne und Fabricius. Koleopterologische Rundschau 13: 34 - 42" title="Ueber die Gyriniden von Linne und Fabricius." volume="13" year="1927 b">Ochs (1927b)</bibRefCitation>
had the types of
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus americanus</emphasis>
</taxonomicName>
examined by an associate in London, and determined unambiguously that
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus americanus</emphasis>
</taxonomicName>
is the Caribbean species, with
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus assimilis</emphasis>
</taxonomicName>
found in mainland North America. We have again confirmed, after examination of the syntype of
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus americanus</emphasis>
</taxonomicName>
, that
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus assimilis</emphasis>
</taxonomicName>
is not
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus americanus</emphasis>
</taxonomicName>
of Linnaeus. It is likely all records of
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus americanus</emphasis>
</taxonomicName>
from areas not in the Caribbean or the Florida Keys actually represent
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus assimilis</emphasis>
</taxonomicName>
. An example of references clearly referring to
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus assimilis</emphasis>
</taxonomicName>
is
<bibRefCitation author="Zuellig, RE" journalOrPublisher="Journal of the Kansas Entomological Society" pageId="97" pageNumber="98" pagination="163 - 171" refId="B134" refString="Zuellig, RE, Pineda, PM, Kondratieff, BC, 2002. Aquatic insects of a high plains spring: Warm Springs, Guernsey, Wyoming. Journal of the Kansas Entomological Society 75: 163 - 171" title="Aquatic insects of a high plains spring: Warm Springs, Guernsey, Wyoming." volume="75" year="2002">Zuellig et al. (2002)</bibRefCitation>
, who recorded &quot;
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus americanus</emphasis>
</taxonomicName>
&quot; from Wyoming.
<bibRefCitation author="Hatch, MH" journalOrPublisher="Bulletin of the Brooklyn Entomological Society" pageId="92" pageNumber="93" pagination="27 - 28" refId="B43" refString="Hatch, MH, 1927. Notes on the biology of Dineutus (Gyrinidae). Bulletin of the Brooklyn Entomological Society 22: 27 - 28" title="Notes on the biology of Dineutus (Gyrinidae)." volume="22" year="1927">
<normalizedToken originalValue="Hatchs">Hatch's</normalizedToken>
(1927)
</bibRefCitation>
key to the larvae of &quot;
<taxonomicName baseAuthorityName="Linnaeus" baseAuthorityYear="1767" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus americanus" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="americanus">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus americanus</emphasis>
</taxonomicName>
&quot; most likely refers to
<taxonomicName baseAuthorityName="Kirby" baseAuthorityYear="1837" class="Insecta" family="Gyrinidae" genus="Dineutus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Dineutus assimilis" order="Coleoptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="assimilis">
<emphasis italics="true" pageId="28" pageNumber="29">Dineutus assimilis</emphasis>
</taxonomicName>
as well.
</paragraph>
<paragraph pageId="28" pageNumber="29">
The juvenile stages have been formally described and illustrated by
<bibRefCitation author="Wilson, CB" journalOrPublisher="Bulletin of the Bureau of Fisheries" pageId="96" pageNumber="97" pagination="231 - 345" refId="B129" refString="Wilson, CB, 1923. Water beetles in relation to pondfish culture, with life histories of thsoe found in fishponds of Fairport, Iowa. Bulletin of the Bureau of Fisheries 39: 231 - 345" title="Water beetles in relation to pondfish culture, with life histories of thsoe found in fishponds of Fairport, Iowa." volume="39" year="1923">Wilson (1923)</bibRefCitation>
and sparse life history information is available in
<bibRefCitation author="Smith, HB" journalOrPublisher="Psyche" pageId="96" pageNumber="97" pagination="156 - 161" publicationUrl="10.1155/1926/18360" refId="B121" refString="Smith, HB, 1926. Notes on the behavior of Dineutes americanus. Psyche 33: 156 - 161, DOI: 10.1155/1926/18360" title="Notes on the behavior of Dineutes americanus." url="10.1155/1926/18360" volume="33" year="1926">Smith (1926)</bibRefCitation>
and
<bibRefCitation author="Istock, C" journalOrPublisher="Evolution" pageId="92" pageNumber="93" pagination="211 - 234" publicationUrl="10.2307/2406575" refId="B49" refString="Istock, C, 1966. Distribution, coexistence, and competition of whirligig beetles. Evolution 20: 211 - 234, DOI: 10.2307/2406575" title="Distribution, coexistence, and competition of whirligig beetles." url="10.2307/2406575" volume="20" year="1966">Istock (1966</bibRefCitation>
;
<bibRefCitation author="Istock, C" journalOrPublisher="Ecology" pageId="92" pageNumber="93" pagination="929 - 937" publicationUrl="10.2307/1934536" refId="B50" refString="Istock, C, 1967. Transient competitive displacement in natural populations of whirligig beetles. Ecology 48: 929 - 937, DOI: 10.2307/1934536" title="Transient competitive displacement in natural populations of whirligig beetles." url="10.2307/1934536" volume="48" year="1967">1967</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>