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<document id="70E0248575EA7FFCD450CFE0D10DD12C" ID-DOI="10.5281/zenodo.179923" ID-GBIF-Dataset="d4476361-9dc4-449d-bcf8-133aa0dedc73" ID-ISSN="1175-5326" ID-Zenodo-Dep="179923" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460013795156" checkinUser="plazi" docAuthor="Molineri, Carlos &amp; Malzacher, Peter" docDate="2007" docId="03E911354F28E61AFF02841E8625FEB6" docLanguage="en" docName="zt01660p031.pdf" docOrigin="Zootaxa 1660" docStyle="DocumentStyle:6581673A57F01A3145754A1E615EDFF0.4:Zootaxa.2007-2008.journal_article" docStyleId="6581673A57F01A3145754A1E615EDFF0" docStyleName="Zootaxa.2007-2008.journal_article" docStyleVersion="4" docTitle="Caenis dominguezi Malzacher" docType="treatment" docVersion="9" lastPageNumber="14" masterDocId="FFD0694D4F22E617FF95816C8213FFE4" masterDocTitle="South American Caenis Stephens (Ephemeroptera, Caenidae), new species and stage descriptions" masterLastPageNumber="31" masterPageNumber="1" pageNumber="11" updateTime="1698233543632" updateUser="plazi">
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<mods:title id="A4DBEF506E0B8E414D07A81AD107D0D1">South American Caenis Stephens (Ephemeroptera, Caenidae), new species and stage descriptions</mods:title>
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<mods:namePart id="AAD5F2A8091413F656799C444FBA01AC">Molineri, Carlos</mods:namePart>
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<mods:namePart id="DB3D28BF1C6719458618376C678689AC">Malzacher, Peter</mods:namePart>
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<mods:date id="82C509D6B2620608797A6C092C291721">2007</mods:date>
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<mods:identifier id="0C49D01A01A084E175E787674E273CA3" type="DOI">10.5281/zenodo.179923</mods:identifier>
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<treatment id="03E911354F28E61AFF02841E8625FEB6" ID-DOI="http://doi.org/10.5281/zenodo.6244715" ID-GBIF-Taxon="119381504" ID-Zenodo-Dep="6244715" LSID="urn:lsid:plazi:treatment:03E911354F28E61AFF02841E8625FEB6" httpUri="http://treatment.plazi.org/id/03E911354F28E61AFF02841E8625FEB6" lastPageId="13" lastPageNumber="14" pageId="10" pageNumber="11">
<subSubSection id="C35AF3A84F28E61DFF02841E8188FA68" box="[151,923,1394,1420]" pageId="10" pageNumber="11" type="nomenclature">
<paragraph id="8BFFA0234F28E61DFF02841E8188FA68" blockId="10.[151,923,1394,1420]" box="[151,923,1394,1420]" pageId="10" pageNumber="11">
<heading id="D0B7174F4F28E61DFF02841E8188FA68" bold="true" box="[151,923,1394,1420]" fontSize="11" level="1" pageId="10" pageNumber="11" reason="1">
<emphasis id="B9347C314F28E61DFF02841E8188FA68" bold="true" box="[151,923,1394,1420]" pageId="10" pageNumber="11">
<taxonomicName id="4C40DBA04F28E61DFF02841E801AFA68" ID-CoL="P9KS" authority="Malzacher" authorityName="Malzacher" box="[151,521,1394,1420]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="10" pageNumber="11" phylum="Arthropoda" rank="species" species="dominguezi">
<emphasis id="B9347C314F28E61DFF02841E836EFA68" bold="true" box="[151,381,1394,1420]" italics="true" pageId="10" pageNumber="11">Caenis dominguezi</emphasis>
Malzacher
</taxonomicName>
(
<figureCitation id="137BBCA64F28E61DFD8C841E80BBFA68" box="[537,680,1394,1420]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="10" pageNumber="11">Figs. 3149</figureCitation>
,
<figureCitation id="137BBCA64F28E61DFD23841E80F0FA68" box="[694,739,1394,1420]" captionStart="FIGURES 158 161" captionStartId="24.[151,269,1805,1829]" captionTargetBox="[372,1214,197,1779]" captionTargetId="figure@24.[372,1216,197,1779]" captionTargetPageId="24" captionText="FIGURES 158 161. Nymph, general view: 158, C. argentina; 159, C. burmeisteri; 160, C. dominguezi; 161, C. ludicra." httpUri="https://zenodo.org/record/179933/files/figure.png" pageId="10" pageNumber="11">160</figureCitation>
, 167, 174, 181)
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C35AF3A84F28E61DFF0284D98099FA28" box="[151,650,1461,1484]" pageId="10" pageNumber="11" type="reference_group">
<paragraph id="8BFFA0234F28E61DFF0284D98099FA28" blockId="10.[151,650,1461,1484]" box="[151,650,1461,1484]" pageId="10" pageNumber="11">
<treatmentCitationGroup id="AB50870D4F28E61DFF0284D98099FA28" box="[151,650,1461,1484]" pageId="10" pageNumber="11">
<taxonomicName id="4C40DBA04F28E61DFF0284D98025FA28" ID-CoL="P9KS" authority="Malzacher, 2001: 9" authorityName="Malzacher" authorityPageNumber="9" authorityYear="2001" box="[151,566,1461,1484]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="10" pageNumber="11" phylum="Arthropoda" rank="species" species="dominguezi">
<emphasis id="B9347C314F28E61DFF0284D98371FA28" box="[151,354,1461,1484]" italics="true" pageId="10" pageNumber="11">Caenis dominguezi</emphasis>
<treatmentCitation id="0AE186324F28E61DFEFC84D98025FA28" author="Malzacher" box="[361,566,1461,1484]" page="9" pageId="10" pageNumber="11" year="2001">
<bibRefCitation id="EFD1DDD24F28E61DFEFC84D9800CFA28" author="Malzacher" box="[361,543,1461,1484]" pageId="10" pageNumber="31" refString="Malzacher, P. (2001) South and Central American Caenis species with rounded forceps tips (Insecta: Ephemeroptera: Caenidae). Stuttgarter Beitrage zur Naturkunde Ser. A, 626, 1 - 20." type="journal article" year="2001">Malzacher, 2001</bibRefCitation>
: 9
</treatmentCitation>
</taxonomicName>
(male).
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="C35AF3A84F28E61AFF0284998625FEB6" lastPageId="13" lastPageNumber="14" pageId="10" pageNumber="11" type="materials_examined">
<paragraph id="8BFFA0234F28E61DFF028499811CF9D3" blockId="10.[151,1437,1525,2031]" pageId="10" pageNumber="11">
<emphasis id="B9347C314F28E61DFF0284998354F9EB" bold="true" box="[151,327,1525,1551]" pageId="10" pageNumber="11">
<typeStatus id="54FB1E814F28E61DFF02849982C1F9EB" box="[151,210,1525,1551]" pageId="10" pageNumber="11">Type</typeStatus>
material
</emphasis>
(
<collectionCode id="ED5138E64F28E61DFEC9849983BAF9EB" box="[348,425,1525,1551]" pageId="10" pageNumber="11">IFML</collectionCode>
).
<typeStatus id="54FB1E814F28E61DFE558499803EF9EB" box="[448,557,1525,1551]" pageId="10" pageNumber="11" type="holotype">Holotype</typeStatus>
male imago from
<taxonomicName id="4C40DBA04F28E61DFC81849981D7F9EB" box="[788,964,1525,1551]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="10" pageNumber="29" phylum="Arthropoda" rank="species" species="argentina">
<collectingCountry id="F357E0B34F28E61DFC81849981D7F9EB" box="[788,964,1525,1551]" name="Argentina" pageId="10" pageNumber="11">ARGENTINA</collectingCountry>
</taxonomicName>
: Córdoba, San Esteban,
<date id="FFFE86E34F28E61DFB6584998760F9EB" box="[1264,1395,1525,1551]" pageId="10" pageNumber="11" value="1981-10-10">10-X-1981</date>
, E. Domínguez col.; 5
<typeStatus id="54FB1E814F28E61DFEE2877183F4F9D3" box="[375,487,1565,1591]" pageId="10" pageNumber="11" type="paratype">paratypes</typeStatus>
male imagos, same data.
</paragraph>
<paragraph id="8BFFA0234F28E61CFF53872980E4FECE" blockId="10.[151,1437,1525,2031]" lastBlockId="11.[151,1436,152,298]" lastPageId="11" lastPageNumber="12" pageId="10" pageNumber="11">
Additional material (
<collectionCode id="ED5138E64F28E61DFE578729801CF9BB" box="[450,527,1605,1631]" pageId="10" pageNumber="11">IFML</collectionCode>
). Four male imagos from
<taxonomicName id="4C40DBA04F28E61DFCC787298611F9BB" box="[850,1026,1605,1631]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="10" pageNumber="29" phylum="Arthropoda" rank="species" species="argentina">
<collectingCountry id="F357E0B34F28E61DFCC787298611F9BB" box="[850,1026,1605,1631]" name="Argentina" pageId="10" pageNumber="11">ARGENTINA</collectingCountry>
</taxonomicName>
: Catamarca, dpto. Andalgalá, Las Estancias, El Lindero,
<geoCoordinate id="EE74C6E44F28E61DFE0A87018027F963" box="[415,564,1645,1671]" direction="south" orientation="latitude" pageId="10" pageNumber="11" precision="15" value="-27.466946">S 27° 28' 01&quot;</geoCoordinate>
<geoCoordinate id="EE74C6E44F28E61DFDD1870180FDF963" box="[580,750,1645,1671]" direction="west" orientation="longitude" pageId="10" pageNumber="11" precision="15" value="-66.01028">W 66° 00' 37&quot;</geoCoordinate>
,
<quantity id="4CB80DC64F28E61DFD6F87018146F963" box="[762,853,1645,1671]" metricMagnitude="3" metricUnit="m" metricValue="1.53" pageId="10" pageNumber="11" unit="m" value="1530.0">1530 m</quantity>
,
<date id="FFFE86E34F28E61DFCF5870181F9F963" box="[864,1002,1645,1671]" pageId="10" pageNumber="11" value="2003-04-19">19-IV-2003</date>
, E. Domínguez &amp; G. Cuezzo cols; 22 nymphs from Catamarca, dpto. Andalgalá, Las Estancias, río de El Lindero,
<geoCoordinate id="EE74C6E44F28E61DFBA087F986C0F94B" box="[1077,1235,1685,1711]" direction="south" orientation="latitude" pageId="10" pageNumber="11" precision="15" value="-27.471666">S 27° 28' 18&quot;</geoCoordinate>
<geoCoordinate id="EE74C6E44F28E61DFB7187F98784F94B" box="[1252,1431,1685,1711]" direction="west" orientation="longitude" pageId="10" pageNumber="11" precision="15" value="-66.015">W 66° 00' 54&quot;</geoCoordinate>
,
<quantity id="4CB80DC64F28E61DFF0287D182E1F933" box="[151,242,1725,1751]" metricMagnitude="3" metricUnit="m" metricValue="1.594" pageId="10" pageNumber="11" unit="m" value="1594.0">1594 m</quantity>
,
<date id="FFFE86E34F28E61DFF6887D1839BF933" box="[253,392,1725,1751]" pageId="10" pageNumber="11" value="2006-03-28">28-III-2006</date>
, C. Molineri col; 19 nymphs,
<specimenCount id="9D466BAA4F28E61DFD7087D18159F933" box="[741,842,1725,1751]" pageId="10" pageNumber="11" type="female">3 female</specimenCount>
and
<specimenCount id="9D466BAA4F28E61DFC1487D181C3F933" box="[897,976,1725,1751]" pageId="10" pageNumber="11" type="male">1 male</specimenCount>
imagos (reared) from Catamarca, dpto. Andalgalá, Las Estancias, río Pisavil,
<geoCoordinate id="EE74C6E44F28E61DFDCD878980F0F91B" box="[600,739,1765,1791]" direction="south" orientation="latitude" pageId="10" pageNumber="11" precision="15" value="-27.45139">S 27° 27' 5&quot;</geoCoordinate>
<geoCoordinate id="EE74C6E44F28E61DFD66878981B2F91B" box="[755,929,1765,1791]" direction="west" orientation="longitude" pageId="10" pageNumber="11" precision="15" value="-66.00278">W 66° 00' 10&quot;</geoCoordinate>
,
<quantity id="4CB80DC64F28E61DFC3A8789861FF91B" box="[943,1036,1765,1791]" metricMagnitude="3" metricUnit="m" metricValue="1.548" pageId="10" pageNumber="11" unit="m" value="1548.0">1548 m</quantity>
,
<date id="FFFE86E34F28E61DFB8C878986B7F91B" box="[1049,1188,1765,1791]" pageId="10" pageNumber="11" value="2006-03-28">28-III-2006</date>
, C. Molineri col; 20 nymphs from Catamarca, río Huacra,
<geoCoordinate id="EE74C6E44F28E61DFDCD866180D0F8C3" box="[600,707,1805,1831]" direction="south" orientation="latitude" pageId="10" pageNumber="11" precision="925" value="-28.0">S 28° 00'</geoCoordinate>
<geoCoordinate id="EE74C6E44F28E61DFD478661815DF8C3" box="[722,846,1805,1831]" direction="west" orientation="longitude" pageId="10" pageNumber="11" precision="925" value="-65.55">W 65° 33'</geoCoordinate>
,
<date id="FFFE86E34F28E61DFCCE866181E8F8C3" box="[859,1019,1805,1831]" pageId="10" pageNumber="11" value="2004-08-24">24-VIII-2004</date>
, M. Peralta col.;
<specimenCount id="9D466BAA4F28E61DFB528661870BF8C3" box="[1223,1304,1805,1831]" pageId="10" pageNumber="11" type="male">1 male</specimenCount>
imago and 12 nymphs from Catamarca, Bañado de Ovanta,
<geoCoordinate id="EE74C6E44F28E61DFD4486598129F8AB" box="[721,826,1845,1871]" direction="south" orientation="latitude" pageId="10" pageNumber="11" precision="925" value="-28.133333">S 28° 08'</geoCoordinate>
<geoCoordinate id="EE74C6E44F28E61DFCDD865981D1F8AB" box="[840,962,1845,1871]" direction="west" orientation="longitude" pageId="10" pageNumber="11" precision="925" value="-65.316666">W 65° 19'</geoCoordinate>
,
<date id="FFFE86E34F28E61DFC5B8659867DF8AB" box="[974,1134,1845,1871]" pageId="10" pageNumber="11" value="2004-08-24">24-VIII-2004</date>
, M. Peralta col.; 1 nymph from Córdoba, Cavalanga, Arroyo Las Salinas,
<geoCoordinate id="EE74C6E44F28E61DFD5C8631813AF893" box="[713,809,1885,1911]" direction="south" orientation="latitude" pageId="10" pageNumber="11" precision="925" value="-31.383333">S 31°23'</geoCoordinate>
<geoCoordinate id="EE74C6E44F28E61DFCAD863181BDF893" box="[824,942,1885,1911]" direction="west" orientation="longitude" pageId="10" pageNumber="11" precision="925" value="-64.53333">W 64°32'</geoCoordinate>
,
<date id="FFFE86E34F28E61DFC2C8631863DF893" box="[953,1070,1885,1911]" pageId="10" pageNumber="11" value="1999-10-02">2-X-1999</date>
, V. Manzo &amp; S. Cohen cols.; 3 nymphs and
<specimenCount id="9D466BAA4F28E61DFEB986E98399F87B" box="[300,394,1925,1951]" pageId="10" pageNumber="11" type="male">10 male</specimenCount>
imagos from Córdoba, Achiras,
<date id="FFFE86E34F28E61DFC9F86E98181F87B" box="[778,914,1925,1951]" pageId="10" pageNumber="11" value="1995-12-09">9-XII-1995</date>
, M. Gualdoni col.;
<specimenCount id="9D466BAA4F28E61DFBE086E986D0F87B" box="[1141,1219,1925,1951]" pageId="10" pageNumber="11" type="male">6 male</specimenCount>
imagos from Córdoba, Los Espinillos,
<date id="FFFE86E34F28E61DFE0086C1800CF823" box="[405,543,1965,1991]" pageId="10" pageNumber="11" value="1997-09-13">13-IX-1997</date>
(nuptial flight 11 h am), C. Molineri &amp; C. Nieto cols., 13 nymphs same data except date,
<date id="FFFE86E34F28E61DFEBD86B983A4F80B" box="[296,439,2005,2031]" pageId="10" pageNumber="11" value="1997-09-15">15-IX-1997</date>
; 10 nymphs from Córdoba, Pampa de Achala, El Cóndor,
<date id="FFFE86E34F28E61DFBCE86B986CCF80B" box="[1115,1247,2005,2031]" pageId="10" pageNumber="11" value="1996-10-23">23-X-1996</date>
; 5 nymphs from Santiago, Guasayán, Maquijata,
<geoCoordinate id="EE74C6E44F29E61CFD8281F480A1FF56" box="[535,690,152,178]" direction="south" orientation="latitude" pageId="11" pageNumber="12" precision="15" value="-28.247223">S 28° 14' 50&quot;</geoCoordinate>
<geoCoordinate id="EE74C6E44F29E61CFD5781F48162FF56" box="[706,881,152,178]" direction="west" orientation="longitude" pageId="11" pageNumber="12" precision="15" value="-64.80889">W 64° 48' 32&quot;</geoCoordinate>
,
<quantity id="4CB80DC64F29E61CFCEB81F481D8FF56" box="[894,971,152,178]" metricMagnitude="2" metricUnit="m" metricValue="4.15" pageId="11" pageNumber="12" unit="m" value="415.0">415 m</quantity>
,
<date id="FFFE86E34F29E61CFC4C81F48675FF56" box="[985,1126,152,178]" pageId="11" pageNumber="12" value="2005-06-14">14-VI-2005</date>
, F. Romero col.; 1 nymph from Salta, Aº Zanjon Seco,
<date id="FFFE86E34F29E61CFE6381AC8064FF3E" box="[502,631,192,218]" pageId="11" pageNumber="12" value="2006-05-16">16-V-2006</date>
,
<geoCoordinate id="EE74C6E44F29E61CFD1081AC8139FF3E" box="[645,810,192,218]" direction="south" orientation="latitude" pageId="11" pageNumber="12" precision="15" value="-23.686388">S 23° 41' 11&quot;</geoCoordinate>
,
<geoCoordinate id="EE74C6E44F29E61CFCAC81AC81F9FF3E" box="[825,1002,192,218]" direction="west" orientation="longitude" pageId="11" pageNumber="12" precision="15" value="-64.57166">W 64° 34' 18&quot;</geoCoordinate>
,
<quantity id="4CB80DC64F29E61CFC6F81AC8659FF3E" box="[1018,1098,192,218]" metricMagnitude="2" metricUnit="m" metricValue="4.3" pageId="11" pageNumber="12" unit="m" value="430.0">430 m</quantity>
, N. von Ellenrieder col.; 20 nymphs from
<collectingCountry id="F357E0B34F29E61CFEA8818483A9FEE6" box="[317,442,232,258]" name="Bolivia" pageId="11" pageNumber="12">BOLIVIA</collectingCountry>
: Tarija, Gran Chaco,
<geoCoordinate id="EE74C6E44F29E61CFD2081848175FEE6" box="[693,870,232,258]" direction="south" orientation="latitude" pageId="11" pageNumber="12" precision="1" value="-21.929499">S 21° 55' 46.2&quot;</geoCoordinate>
<geoCoordinate id="EE74C6E44F29E61CFCE381848624FEE6" box="[886,1079,232,258]" direction="west" orientation="longitude" pageId="11" pageNumber="12" precision="1" value="-63.77392">W 63° 46' 26.1&quot;</geoCoordinate>
,
<quantity id="4CB80DC64F29E61CFBD181848682FEE6" box="[1092,1169,232,258]" metricMagnitude="2" metricUnit="m" metricValue="8.1" pageId="11" pageNumber="12" unit="m" value="810.0">810 m</quantity>
, río Caraparí, cerca de Caraparí,
<date id="FFFE86E34F29E61CFE9F807C839EFECE" box="[266,397,272,298]" pageId="11" pageNumber="12" value="2004-10-10">10-X-2004</date>
, C. Molineri &amp; V. Manzo cols.
</paragraph>
<caption id="DF3FF0AB4F29E61CFF02867780D1F804" httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="11" pageNumber="12" targetBox="[156,1417,356,1818]" targetPageId="11">
<paragraph id="8BFFA0234F29E61CFF02867780D1F804" blockId="11.[151,1437,1819,2016]" pageId="11" pageNumber="12">
<emphasis id="B9347C314F29E61CFF0286778373F8D7" bold="true" box="[151,352,1819,1843]" pageId="11" pageNumber="12">FIGURES 3149.</emphasis>
<taxonomicName id="4C40DBA04F29E61CFEFD86708025F8D7" box="[360,566,1820,1843]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="dominguezi">
<emphasis id="B9347C314F29E61CFEFD86708025F8D7" box="[360,566,1820,1843]" italics="true" pageId="11" pageNumber="12">Caenis dominguezi</emphasis>
</taxonomicName>
, nymph. 31, labrum and detail of anteromedian emargination, d.v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d.v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 4546, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l.v.; 49, sternum IX of a male nymph. Abrevviations: OG=operculate gill; T2= second abdominal tergum.
</paragraph>
</caption>
<paragraph id="8BFFA0234F2EE61BFF5381F4807FFF56" blockId="12.[151,1437,152,2020]" box="[198,620,152,178]" pageId="12" pageNumber="13">
Male imago. See
<bibRefCitation id="EFD1DDD24F2EE61BFE0681F4807BFF56" author="Malzacher" box="[403,616,152,178]" pageId="12" pageNumber="31" refString="Malzacher, P. (2001) South and Central American Caenis species with rounded forceps tips (Insecta: Ephemeroptera: Caenidae). Stuttgarter Beitrage zur Naturkunde Ser. A, 626, 1 - 20." type="journal article" year="2001">Malzacher (2001)</bibRefCitation>
.
</paragraph>
<paragraph id="8BFFA0234F2EE61BFF5381AC8366FE9E" blockId="12.[151,1437,152,2020]" pageId="12" pageNumber="13">
Female imago. Similar to male imago. Length: body,
<quantity id="4CB80DC64F2EE61BFCD881AC81F3FF3E" box="[845,992,192,218]" metricMagnitude="-3" metricUnit="m" metricValue="4.6" metricValueMax="4.7" metricValueMin="4.5" pageId="12" pageNumber="13" unit="mm" value="4.6" valueMax="4.7" valueMin="4.5">4.54.7 mm</quantity>
; fore wing,
<quantity id="4CB80DC64F2EE61BFBE181AC8715FF3E" box="[1140,1286,192,218]" metricMagnitude="-3" metricUnit="m" metricValue="4.4" metricValueMax="4.5" metricValueMin="4.3" pageId="12" pageNumber="13" unit="mm" value="4.4" valueMax="4.5" valueMin="4.3">4.34.5 mm</quantity>
; caudal filaments, 2.53.0 mm. Katepisternum not paler than rest of mesopleural sclerites. Abdominal pleurae whitish with small grayish marks. Posteromedian membranous projection on tergum II relatively short. Egg mass whitish to yellowish-white. Ninth sternum broadly rounded apically. Caudal filaments yellowish except basal segment brownish.
</paragraph>
<paragraph id="8BFFA0234F2EE61BFF5380E48601FA56" blockId="12.[151,1437,152,2020]" pageId="12" pageNumber="13">
Mature nymph (
<figureCitation id="137BBCA64F2EE61BFE1180E483F8FE46" box="[388,491,392,418]" captionStart="FIGURES 158 161" captionStartId="24.[151,269,1805,1829]" captionTargetBox="[372,1214,197,1779]" captionTargetId="figure@24.[372,1216,197,1779]" captionTargetPageId="24" captionText="FIGURES 158 161. Nymph, general view: 158, C. argentina; 159, C. burmeisteri; 160, C. dominguezi; 161, C. ludicra." httpUri="https://zenodo.org/record/179933/files/figure.png" pageId="12" pageNumber="13">Fig. 160</figureCitation>
). Length of female: body,
<quantity id="4CB80DC64F2EE61BFCB580E481A2FE46" box="[800,945,392,418]" metricMagnitude="-3" metricUnit="m" metricValue="6.1" metricValueMax="6.5" metricValueMin="5.7" pageId="12" pageNumber="13" unit="mm" value="6.1" valueMax="6.5" valueMin="5.7">5.76.5 mm</quantity>
; caudal filaments,
<quantity id="4CB80DC64F2EE61BFB1880E4870DFE46" box="[1165,1310,392,418]" metricMagnitude="-3" metricUnit="m" metricValue="4.1" metricValueMax="4.5" metricValueMin="3.7" pageId="12" pageNumber="13" unit="mm" value="4.1" valueMax="4.5" valueMin="3.7">3.74.5 mm</quantity>
. Length of male: body,
<quantity id="4CB80DC64F2EE61BFEB280DC83ABFE2E" box="[295,440,432,458]" metricMagnitude="-3" metricUnit="m" metricValue="4.6" metricValueMax="4.8" metricValueMin="4.4" pageId="12" pageNumber="13" unit="mm" value="4.6" valueMax="4.8" valueMin="4.4">4.44.8 mm</quantity>
; caudal filaments, 2.54.0 mm. General coloration brown to light-brown. Head (Fig. 167): occiput without marks except a small gray area at posterolateral corners; transverse blackish band between ocelli, anteriorly to median ocellus a triangular pale area is present, venter of head much paler than dorsum; hind margin of head with small simple setules. Antennae: pedicel and scape yellowish-brown, flagellum paler. Mouthparts: labrum (
<figureCitation id="137BBCA64F2EE61BFD99833C8072FD8E" box="[524,609,592,618]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Fig. 31</figureCitation>
) with a pair of small submedian protuberances on anteromedian emargination; mandibles as in
<figureCitation id="137BBCA64F2EE61BFE5C83148066FD76" box="[457,629,632,658]" captionStart="FIGURES 139 157" captionStartId="22.[151,269,1675,1699]" captionTargetBox="[187,1404,641,1645]" captionTargetId="figure@22.[173,1413,634,1651]" captionTargetPageId="22" captionText="FIGURES 139 157. Left and right mandibles, d. v.: 139 140, C. argentina; 141 142, C. burmeisteri; 143 144, C. dominguezi; 145 146, C. gonseri; 147 148, C. tenella; 149 150, C. ludicra; 151 152, C. plaumanni; 153 154, C. uruzu. Hypopharynx, v. v.: 155, C. burmeisteri; 156, C. dominguezi; 157, C. tenella." httpUri="https://zenodo.org/record/179932/files/figure.png" pageId="12" pageNumber="13">Figs. 143144</figureCitation>
, left mandible with anterior denticles of molae markedly protruding (
<figureCitation id="137BBCA64F2EE61BFF0A83CC8318FD5E" box="[159,267,672,698]" captionStart="FIGURES 139 157" captionStartId="22.[151,269,1675,1699]" captionTargetBox="[187,1404,641,1645]" captionTargetId="figure@22.[173,1413,634,1651]" captionTargetPageId="22" captionText="FIGURES 139 157. Left and right mandibles, d. v.: 139 140, C. argentina; 141 142, C. burmeisteri; 143 144, C. dominguezi; 145 146, C. gonseri; 147 148, C. tenella; 149 150, C. ludicra; 151 152, C. plaumanni; 153 154, C. uruzu. Hypopharynx, v. v.: 155, C. burmeisteri; 156, C. dominguezi; 157, C. tenella." httpUri="https://zenodo.org/record/179932/files/figure.png" pageId="12" pageNumber="13">Fig. 143</figureCitation>
); lingua of hypopharynx with slightly concave fore margin (
<figureCitation id="137BBCA64F2EE61BFC6783CC864DFD5E" box="[1010,1118,672,698]" captionStart="FIGURES 139 157" captionStartId="22.[151,269,1675,1699]" captionTargetBox="[187,1404,641,1645]" captionTargetId="figure@22.[173,1413,634,1651]" captionTargetPageId="22" captionText="FIGURES 139 157. Left and right mandibles, d. v.: 139 140, C. argentina; 141 142, C. burmeisteri; 143 144, C. dominguezi; 145 146, C. gonseri; 147 148, C. tenella; 149 150, C. ludicra; 151 152, C. plaumanni; 153 154, C. uruzu. Hypopharynx, v. v.: 155, C. burmeisteri; 156, C. dominguezi; 157, C. tenella." httpUri="https://zenodo.org/record/179932/files/figure.png" pageId="12" pageNumber="13">Fig. 156</figureCitation>
); labium with paraglossae rounded and relatively short, segment II of labial palp 1.321.77 times the length of segment III. Thorax yellowish to brownish. Pronotum shaded with black as in
<figureCitation id="137BBCA64F2EE61BFCA3839C819CFCEE" box="[822,911,752,778]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Fig. 35</figureCitation>
, with a pair of submedian large pale areas. Mesonotum with two pairs of submedian pale blotches, and another larger pair on wingpad bases. Metanotum and thoracic sterna paler than dorsum. Legs whitish-yellow with a small subapical gray mark in the dorsal surface of femora (
<figureCitation id="137BBCA64F2EE61BFEC6820483F7FC66" box="[339,484,872,898]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Figs. 3638</figureCitation>
). Coxal projections with irregular margin and long setae, coxal projections IIIII medium sized and rounded (
<figureCitation id="137BBCA64F2EE61BFE7182FC8066FC4E" box="[484,629,912,938]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Figs. 3940</figureCitation>
). All femora with numerous scattered spine-like setae on the dorsum (more numerous on femora IIIII) (
<figureCitation id="137BBCA64F2EE61BFDAD82D480DAFC36" box="[568,713,952,978]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Figs. 3638</figureCitation>
). All tarsi with a longitudinal row of simple setae, tarsi II and III with an additional row of plumose setae (13 setae on tarsus II, 6 on tarsus III). Tarsal claws III with 610 denticles of irregular size but increasing toward apex (
<figureCitation id="137BBCA64F2EE61BFCAA856481DAFBC6" box="[831,969,1032,1058]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Fig. 4142</figureCitation>
); tarsal claw III with 2325 denticles becoming larger from base to apex, abruptly decreasing in size medially, and increasing again toward apex (
<figureCitation id="137BBCA64F2EE61BFF0A853482E8FB96" box="[159,251,1112,1138]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Fig. 43</figureCitation>
). Abdomen light-brown shaded with gray, posteromedian projection of tergum II well developed, curved posteriorly (
<figureCitation id="137BBCA64F2EE61BFEEA85EC83F7FB7E" box="[383,484,1152,1178]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Figs. 48</figureCitation>
). Terga III shaded with gray except on lateral areas, terga IIIVII shaded more slightly with gray except medially and laterally, terga VIIIX shaded more strongly except suboval pale marks on posterolateral corners of terga VIIIIX (
<figureCitation id="137BBCA64F2EE61BFD0685BC80E9FB0E" box="[659,762,1232,1258]" captionStart="FIGURES 172 178" captionStartId="27.[151,269,1913,1937]" captionTargetBox="[375,1213,194,1887]" captionTargetId="figure@27.[373,1213,194,1889]" captionTargetPageId="27" captionText="FIGURES 172 178. Nymph, abdominal terga: 172, C. argentina; 173, C. burmeisteri; 174, C. dominguezi; 175, C. ludicra; 176, C. tenella; 177, C. plaumanni; 178, C. uruzu." httpUri="https://zenodo.org/record/179936/files/figure.png" pageId="12" pageNumber="13">Fig. 174</figureCitation>
). Abdominal sterna paler (
<figureCitation id="137BBCA64F2EE61BFBA685BC868AFB0E" box="[1075,1177,1232,1258]" captionStart="FIGURES 179 184" captionStartId="28.[151,269,1290,1314]" captionTargetBox="[151,1435,178,1265]" captionTargetId="figure@28.[151,1436,160,1266]" captionTargetPageId="28" captionText="FIGURES 179 184. Nymph, abdominal sterna: 179, C. argentina; 180, C. burmeisteri; 181, C. dominguezi; 182, C. tenella; 183, C. plaumanni; 184, C. uruzu." httpUri="https://zenodo.org/record/179937/files/figure.png" pageId="12" pageNumber="13">Fig. 181</figureCitation>
), slightly shaded with gray, sometimes with cuticular yellowish coloration on anterior margins of sterna VIIIX. Gills: operculate gills (
<figureCitation id="137BBCA64F2EE61BFF4E844C8321FADE" box="[219,306,1312,1338]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Fig. 44</figureCitation>
) uniform yellowish-brown, with numerous simple setae and microspines dorsally, microtrichia on ventral submarginal row elongated or subtriangular (
<figureCitation id="137BBCA64F2EE61BFCB6842481A0FA86" box="[803,947,1352,1378]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Figs. 4546</figureCitation>
); remaining gills bicolor, half whitish and half grayish (
<figureCitation id="137BBCA64F2EE61BFEA1841C839FFA6E" box="[308,396,1392,1418]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Fig. 47</figureCitation>
). Caudal filaments yellowish-white. Ninth sternum with a U-shaped median indentation (
<figureCitation id="137BBCA64F2EE61BFF0A84F482E4FA56" box="[159,247,1432,1458]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Fig. 49</figureCitation>
), rear margin with relatively strong simple setae (not bent apically).
</paragraph>
<paragraph id="8BFFA0234F2EE61AFF5384AD82D6FEE6" blockId="12.[151,1437,152,2020]" lastBlockId="13.[151,1436,152,338]" lastPageId="13" lastPageNumber="14" pageId="12" pageNumber="13">
Diagnosis.
<taxonomicName id="4C40DBA04F2EE61BFEDF84AE83E7FA3F" box="[330,500,1474,1499]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="12" pageNumber="13" phylum="Arthropoda" rank="species" species="dominguezi">
<emphasis id="B9347C314F2EE61BFEDF84AE83E7FA3F" box="[330,500,1474,1499]" italics="true" pageId="12" pageNumber="13">C. dominguezi</emphasis>
</taxonomicName>
can be distinguished from the other species of the genus by the following combination of characters. In the adult: 1) general coloration dark brown; 2) prosternal triangle anteriorly pointed or open; 3) median filament on abdominal tergum II long; 4) fore legs as long as body; 5) forceps apically rounded; 6) central sclerite of styliger with blurred outline; 7) apophyses of styliger sclerite bent inwards; 8) lobes of penes laterally projected, apically acute to somewhat rounded; 9) coloration of mesothoracic katepisternum similar to rest of mesothorax; 10) posterolateral zones of sternum IX strongly dark-colored. In the nymph: 1) occiput without marks, head color pattern as in Fig. 167, hind margin with small simple setules; 2) meso- and metacoxal processes present, rounded and with long bristles; 3) tarsi with relatively medium length setae, 36 plumose setae on tarsi II and III (
<figureCitation id="137BBCA64F2EE61BFD33866E8124F8F8" box="[678,823,1794,1820]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Figs. 3637</figureCitation>
); 4) tarsal claws not strongly curved apically (
<figureCitation id="137BBCA64F2EE61BFAF4866E82F7F8A0" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Figs. 4143</figureCitation>
), denticles on tarsal claw III becoming larger from base, abruptly decreasing in size medially, and increasing size again toward apex; 5) abdominal color pattern as in
<figureCitation id="137BBCA64F2EE61BFC38863E8609F888" box="[941,1050,1874,1900]" captionStart="FIGURES 172 178" captionStartId="27.[151,269,1913,1937]" captionTargetBox="[375,1213,194,1887]" captionTargetId="figure@27.[373,1213,194,1889]" captionTargetPageId="27" captionText="FIGURES 172 178. Nymph, abdominal terga: 172, C. argentina; 173, C. burmeisteri; 174, C. dominguezi; 175, C. ludicra; 176, C. tenella; 177, C. plaumanni; 178, C. uruzu." httpUri="https://zenodo.org/record/179936/files/figure.png" pageId="12" pageNumber="13">Figs. 174</figureCitation>
and
<figureCitation id="137BBCA64F2EE61BFBC6863E8691F888" box="[1107,1154,1874,1900]" captionStart="FIGURES 179 184" captionStartId="28.[151,269,1290,1314]" captionTargetBox="[151,1435,178,1265]" captionTargetId="figure@28.[151,1436,160,1266]" captionTargetPageId="28" captionText="FIGURES 179 184. Nymph, abdominal sterna: 179, C. argentina; 180, C. burmeisteri; 181, C. dominguezi; 182, C. tenella; 183, C. plaumanni; 184, C. uruzu." httpUri="https://zenodo.org/record/179937/files/figure.png" pageId="12" pageNumber="13">181</figureCitation>
; 6) labrum with slightly rounded lateral margins and with two submedian protuberances on anteromedian emargination (
<figureCitation id="137BBCA64F2EE61BFA8786168778F870" box="[1298,1387,1914,1940]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Fig. 31</figureCitation>
); 7) segment II of labial palp 1.321.77 times the length of segment III; 8) lingua of hypopharynx with concave fore margin (
<figureCitation id="137BBCA64F2EE61BFEA186A6838EF800" box="[308,413,1994,2020]" captionStart="FIGURES 139 157" captionStartId="22.[151,269,1675,1699]" captionTargetBox="[187,1404,641,1645]" captionTargetId="figure@22.[173,1413,634,1651]" captionTargetPageId="22" captionText="FIGURES 139 157. Left and right mandibles, d. v.: 139 140, C. argentina; 141 142, C. burmeisteri; 143 144, C. dominguezi; 145 146, C. gonseri; 147 148, C. tenella; 149 150, C. ludicra; 151 152, C. plaumanni; 153 154, C. uruzu. Hypopharynx, v. v.: 155, C. burmeisteri; 156, C. dominguezi; 157, C. tenella." httpUri="https://zenodo.org/record/179932/files/figure.png" pageId="12" pageNumber="13">Fig. 156</figureCitation>
); 9) IX sternum with a U-shaped apicomedial indentation (
<figureCitation id="137BBCA64F2EE61BFBF186A686ADF800" box="[1124,1214,1994,2020]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="12" pageNumber="13">Fig. 49</figureCitation>
), rear margin with relatively strong simple setae; 10) dorsum of gill II only with simple setae (
<figureCitation id="137BBCA64F2FE61AFB9F81F48670FF56" box="[1034,1123,152,178]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="13" pageNumber="14">Fig. 44</figureCitation>
); 11) dorsum of all femora with numerous long spines (
<figureCitation id="137BBCA64F2FE61AFE7E81AC806DFF3E" box="[491,638,192,218]" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="13" pageNumber="14">Figs. 3638</figureCitation>
); 12) abdominal gills IIIVI bicolor half white and half gray (
<figureCitation id="137BBCA64F2FE61AFAF881AC82ABFEE6" captionStart="FIGURES 31 49" captionStartId="11.[151,269,1819,1843]" captionTargetBox="[156,1417,356,1818]" captionTargetId="figure@11.[151,1436,328,1852]" captionTargetPageId="11" captionText="FIGURES 31 49. Caenis dominguezi, nymph. 31, labrum and detail of anteromedian emargination, d. v.; 32, setae on dorsum of hind femora; 33, seta on hind tibiae; 34, setae of fore femoral dorso-transversal row; 35, pronotum, d. v.; 36, fore leg; 37, middle leg; 38, hind leg; 39, middle coxa; 40, hind coxa; 41, foreclaw; 42, middle claw; 43, hind claw; 44, operculate gill and detail of dorsal surface; 45 46, microtrichia of submarginal ventral row of operculate gill; 47, abdominal gill III; 48, abdominal segment II and operculate gill, l. v.; 49, sternum IX of a male nymph. Abrevviations: OG = operculate gill; T 2 = second abdominal tergum." httpUri="https://zenodo.org/record/179926/files/figure.png" pageId="13" pageNumber="14">Fig. 47</figureCitation>
).
</paragraph>
<paragraph id="8BFFA0234F2FE61AFF53807C8625FEB6" blockId="13.[151,1436,152,338]" pageId="13" pageNumber="14">
Distribution (
<figureCitation id="137BBCA64F2FE61AFEF0807C83DFFECE" box="[357,460,272,298]" captionStart="FIGURES 185 188" captionStartId="29.[151,269,1964,1988]" captionText="FIGURES 185 188. Distribution maps." pageId="13" pageNumber="14">Fig. 188</figureCitation>
).
<taxonomicName id="4C40DBA04F2FE61AFE74807C8045FECE" box="[481,598,272,298]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="13" pageNumber="29" phylum="Arthropoda" rank="species" species="argentina">
<collectingCountry id="F357E0B34F2FE61AFE74807C8045FECE" box="[481,598,272,298]" name="Argentina" pageId="13" pageNumber="14">Argentina</collectingCountry>
</taxonomicName>
(Córdoba, Catamarca, Santiago, Salta),
<collectingCountry id="F357E0B34F2FE61AFBA1807C8699FECE" box="[1076,1162,272,298]" name="Bolivia" pageId="13" pageNumber="14">Bolivia</collectingCountry>
(Tarija). Distributional records include localities from Chaco and transitional (Chaco-Yungas) regions.
</paragraph>
</subSubSection>
</treatment>
</document>