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<document id="AEAF140502E6FBAE51EEBB08236BB756" 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="03E911354F35E60AFF02820E8317FEE6" 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 uruzu Molineri &amp; Malzacher, 2007, new species" docType="treatment" docVersion="9" lastPageNumber="29" masterDocId="FFD0694D4F22E617FF95816C8213FFE4" masterDocTitle="South American Caenis Stephens (Ephemeroptera, Caenidae), new species and stage descriptions" masterLastPageNumber="31" masterPageNumber="1" pageNumber="24" updateTime="1698233543632" updateUser="plazi">
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<mods:title id="3A655E87A1A0D27492B82FD4B23BFF78">South American Caenis Stephens (Ephemeroptera, Caenidae), new species and stage descriptions</mods:title>
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<mods:namePart id="1044D1277DCEFE930C0D783E872EFCAD">Molineri, Carlos</mods:namePart>
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<mods:namePart id="39BAC97D74A084F251E174C9EF3D2BF6">Malzacher, Peter</mods:namePart>
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<mods:date id="D7AA37B53F85516D2C96FA08F2642321">2007</mods:date>
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<mods:identifier id="0002ED57A0F47BA52EFE268D415DE15C" type="DOI">10.5281/zenodo.179923</mods:identifier>
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<treatment id="03E911354F35E60AFF02820E8317FEE6" ID-DOI="http://doi.org/10.5281/zenodo.6244723" ID-GBIF-Taxon="119381500" ID-Zenodo-Dep="6244723" LSID="urn:lsid:plazi:treatment:03E911354F35E60AFF02820E8317FEE6" httpUri="http://treatment.plazi.org/id/03E911354F35E60AFF02820E8317FEE6" lastPageId="29" lastPageNumber="29" pageId="23" pageNumber="24">
<subSubSection id="C35AF3A84F35E600FF02820E81F7FC98" box="[151,996,866,892]" pageId="23" pageNumber="24" type="nomenclature">
<paragraph id="8BFFA0234F35E600FF02820E81F7FC98" blockId="23.[151,996,866,892]" box="[151,996,866,892]" pageId="23" pageNumber="24">
<heading id="D0B7174F4F35E600FF02820E81F7FC98" bold="true" box="[151,996,866,892]" fontSize="11" level="1" pageId="23" pageNumber="24" reason="1">
<emphasis id="B9347C314F35E600FF02820E81F7FC98" bold="true" box="[151,996,866,892]" pageId="23" pageNumber="24">
<taxonomicName id="4C40DBA04F35E600FF02820E832BFC98" ID-CoL="P9NX" box="[151,312,866,892]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="23" pageNumber="24" phylum="Arthropoda" rank="species" species="uruzu" status="sp. nov.">
<emphasis id="B9347C314F35E600FF02820E832BFC98" bold="true" box="[151,312,866,892]" italics="true" pageId="23" pageNumber="24">Caenis uruzu</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A207C14A4F35E600FED5820E83C3FC98" box="[320,464,866,892]" pageId="23" pageNumber="24" rank="species">new species</taxonomicNameLabel>
(
<figureCitation id="137BBCA64F35E600FE4A820E806EFC98" box="[479,637,866,892]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="23" pageNumber="24">Figs. 96–122</figureCitation>
,
<figureCitation id="137BBCA64F35E600FD1F820E80E1FC98" box="[650,754,866,892]" 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="23" pageNumber="24">153–154</figureCitation>
,
<figureCitation id="137BBCA64F35E600FD6A820E813FFC98" box="[767,812,866,892]" captionStart="FIGURES 162 – 164" captionStartId="25.[151,269,1409,1433]" captionTargetBox="[365,1220,182,1400]" captionTargetId="figure@25.[365,1221,182,1401]" captionTargetPageId="25" captionText="FIGURES 162 – 164. Nymph, general view: 162, C. tenella; 163, C. plaumanni; 164, C. uruzu." httpUri="https://zenodo.org/record/179934/files/figure.png" pageId="23" pageNumber="24">164</figureCitation>
, 171, 178, 184)
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C35AF3A84F35E60AFF0282C18317FEE6" lastPageId="29" lastPageNumber="30" pageId="23" pageNumber="24" type="materials_examined">
<paragraph id="8BFFA0234F35E600FF0282C18797FAE3" blockId="23.[151,1437,941,1927]" pageId="23" pageNumber="24">
<typeStatus id="54FB1E814F35E600FF0282C182C2FC23" box="[151,209,941,967]" pageId="23" pageNumber="24">Type</typeStatus>
material:
<typeStatus id="54FB1E814F35E600FED982C183AAFC23" box="[332,441,941,967]" pageId="23" pageNumber="24" type="holotype">Holotype</typeStatus>
male imago (reared) with nymphal exuviae (genitalia and nymphal parts in slides) from
<taxonomicName id="4C40DBA04F35E600FF4F82B98399FC0B" box="[218,394,981,1007]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="23" pageNumber="29" phylum="Arthropoda" rank="species" species="argentina">
<collectingCountry id="F357E0B34F35E600FF4F82B98399FC0B" box="[218,394,981,1007]" name="Argentina" pageId="23" pageNumber="24">ARGENTINA</collectingCountry>
</taxonomicName>
: Misiones, P.P. Urugua-í, arroyo
<taxonomicName id="4C40DBA04F35E600FC8D82B98177FC0B" box="[792,868,981,1007]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="23" pageNumber="30" phylum="Arthropoda" rank="species" species="uruzu">Uruzú</taxonomicName>
,
<date id="FFFE86E34F35E600FCE682B98632FC0B" box="[883,1057,981,1007]" pageId="23" pageNumber="24" value="1999-12-07" valueMax="1999-12-11" valueMin="1999-12-07">7-11-XII-1999</date>
, C. Molineri col.
<typeStatus id="54FB1E814F35E600FB6E82B98762FC0B" box="[1275,1393,981,1007]" pageId="23" pageNumber="24" type="paratype">Paratypes</typeStatus>
:
<specimenCount id="9D466BAA4F35E600FAEA82B982C3FBF3" pageId="23" pageNumber="24" type="male">13 male</specimenCount>
imagos from
<collectingCountry id="F357E0B34F35E600FEE482918010FBF3" box="[369,515,1021,1047]" name="Uruguay" pageId="23" pageNumber="24">URUGUAY</collectingCountry>
: Piraraja, Orilla Cebollati,
<date id="FFFE86E34F35E600FCAE829181D7FBF3" box="[827,964,1021,1047]" pageId="23" pageNumber="24" value="1952-12-09">9-XII-1952</date>
, Carbonell col.; 11 nymphs same data as
<typeStatus id="54FB1E814F35E600FF0285498312FBDB" box="[151,257,1061,1087]" pageId="23" pageNumber="24" type="holotype">holotype</typeStatus>
; 1 nymph
<taxonomicName id="4C40DBA04F35E600FEE88549803EFBDB" box="[381,557,1061,1087]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="23" pageNumber="29" phylum="Arthropoda" rank="species" species="argentina">
<collectingCountry id="F357E0B34F35E600FEE88549803EFBDB" box="[381,557,1061,1087]" name="Argentina" pageId="23" pageNumber="24">ARGENTINA</collectingCountry>
</taxonomicName>
: Misiones,
<quantity id="4CB80DC64F35E600FD26854980EDFBDB" box="[691,766,1061,1087]" metricMagnitude="4" metricUnit="m" metricValue="1.0" pageId="23" pageNumber="24" unit="km" value="10.0">10 km</quantity>
NE de
<collectingCountry id="F357E0B34F35E600FCCD854981F4FBDB" box="[856,999,1061,1087]" name="Saint Vincent and the Grenadines" pageId="23" pageNumber="24">San Vicente</collectingCountry>
,
<collectionCode id="ED5138E64F35E600FC618549862BFBDB" box="[1012,1080,1061,1087]" pageId="23" pageNumber="24">INTA</collectionCode>
Cuartel Victoria,
<date id="FFFE86E34F35E600FA9E8549878BFBDB" box="[1291,1432,1061,1087]" pageId="23" pageNumber="24" value="1998-11-20">20-XI-1998</date>
, E. Domínguez, C. Molineri, C. Nieto cols.; 6 nymphs idem except date
<date id="FFFE86E34F35E600FB9185218682FB83" box="[1028,1169,1101,1127]" pageId="23" pageNumber="24" value="1986-11-30">30-XI-1986</date>
, E. Domínguez col; 2 nymphs Misiones, Bonpland, arroyo del Tigre,
<date id="FFFE86E34F35E600FD5685198143FB6B" box="[707,848,1141,1167]" pageId="23" pageNumber="24" value="1986-11-26">26-XI-1986</date>
, E. Domínguez col.; 3 nymphs from Misiones,
<quantity id="4CB80DC64F35E600FAEA851982AEFB53" metricMagnitude="4" metricUnit="m" metricValue="2.5" pageId="23" pageNumber="24" unit="km" value="25.0">25 km</quantity>
S El Soberbio,
<date id="FFFE86E34F35E600FE1185F18002FB53" box="[388,529,1181,1207]" pageId="23" pageNumber="24" value="1998-11-21">21-XI-1998</date>
, E. Domínguez, C. Molineri, C. Nieto cols.; and 1 nymph from Misiones, Puerto Mado, arroyo Yacutinga,
<date id="FFFE86E34F35E600FDB185A980CAFB3B" box="[548,729,1221,1247]" pageId="23" pageNumber="24" value="1998-11-19" valueMax="1998-11-20" valueMin="1998-11-19">19-20-XI-1998</date>
, E. Domínguez, C. Molineri, C. Nieto cols.
<typeStatus id="54FB1E814F35E600FB6F85A98774FB3B" box="[1274,1383,1221,1247]" pageId="23" pageNumber="24" type="holotype">Holotype</typeStatus>
and
<typeStatus id="54FB1E814F35E600FF0285818314FAE3" box="[151,263,1261,1287]" pageId="23" pageNumber="24" type="paratype">paratypes</typeStatus>
deposited at
<collectionCode id="ED5138E64F35E600FE37858183F8FAE3" box="[418,491,1261,1287]" pageId="23" pageNumber="24">IFML</collectionCode>
, except
<specimenCount id="9D466BAA4F35E600FDDE85818089FAE3" box="[587,666,1261,1287]" pageId="23" pageNumber="24" type="male">7 male</specimenCount>
imagos in
<collectionCode id="ED5138E64F35E600FC8E85818162FAE3" box="[795,881,1261,1287]" pageId="23" pageNumber="24">MFCU</collectionCode>
, and
<specimenCount id="9D466BAA4F35E600FC3B858181EEFAE3" box="[942,1021,1261,1287]" pageId="23" pageNumber="24" type="male">3 male</specimenCount>
imagos and 2 nymphs in
<collectionCode id="ED5138E64F35E600FABF85818792FAE3" box="[1322,1409,1261,1287]" pageId="23" pageNumber="24">FAMU</collectionCode>
.
</paragraph>
<paragraph id="8BFFA0234F35E600FF538479876FFACB" blockId="23.[151,1437,941,1927]" box="[198,1404,1301,1327]" pageId="23" pageNumber="24">Etymology. The name, noun in apposition, alludes to one of the rivers where the species was collected.</paragraph>
<paragraph id="8BFFA0234F35E600FF53845181AFF8BB" blockId="23.[151,1437,941,1927]" pageId="23" pageNumber="24">
Male imago. Length: forewings,
<quantity id="4CB80DC64F35E600FDC0845180FAFAB3" box="[597,745,1341,1367]" metricMagnitude="-3" metricUnit="m" metricValue="2.9" metricValueMax="3.1" metricValueMin="2.7" pageId="23" pageNumber="24" unit="mm" value="2.9" valueMax="3.1" valueMin="2.7">2.7–3.1 mm</quantity>
; body,
<quantity id="4CB80DC64F35E600FCD6845181CBFAB3" box="[835,984,1341,1367]" metricMagnitude="-3" metricUnit="m" metricValue="2.95" metricValueMax="3.4" metricValueMin="2.5" pageId="23" pageNumber="24" unit="mm" value="2.95" valueMax="3.4" valueMin="2.5">2.5–3.4 mm</quantity>
. General coloration yellowish-brown. Head dorsally brownish shaded with gray, occiput behind eyes blackish; head ventrally paler; antennae yellowish. Thorax. Prothorax with yellowish-brown sclerites and whitish-yellow membranes; pronotum with gray markings; prosternum shaded with black on prosternal triangle and fore margin; prosternal triangle with concave sides, anteriorly blunt (
<figureCitation id="137BBCA64F35E600FD8484B18069FA13" box="[529,634,1501,1527]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="23" pageNumber="24">Fig. 100</figureCitation>
). Mesonotum chestnut, mesoscutellum dark brown; metanotum and pterothoracic pleurae and sterna yellowish-brown. Legs. Coxae and trochanters yellowish, femora whitish with yellow margins, tibiae yellowish, tarsi whitish. Foreleg of subequal length to body. Forewings hyaline slightly shaded with gray on C and Sc areas, longitudinal veins grayish-yellow, cross veins translucent. Abdomen yellowish-white extensively shaded with gray, tergum I slightly darker than the rest, pleural membranes whitish, tergum X yellowish with medial line blackish; finger-like projection on abdominal terga II long (
<figureCitation id="137BBCA64F35E600FAF987C982D4F903" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="23" pageNumber="24">Fig. 101</figureCitation>
). Genitalia (
<figureCitation id="137BBCA64F35E600FEC387A183BDF903" box="[342,430,1741,1767]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="23" pageNumber="24">Fig. 96</figureCitation>
): styliger with yellowish sclerites, shaded with gray laterally; central sclerite large and elongated, apophyses of styliger sclerites wide at base and becoming thinner toward apex, hind margin of styliger plate convex (
<figureCitation id="137BBCA64F35E600FEFB867183D6F8D3" box="[366,453,1821,1847]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="23" pageNumber="24">Fig. 96</figureCitation>
); forceps yellowish, apically rounded (
<figureCitation id="137BBCA64F35E600FC1F8671860AF8D3" box="[906,1049,1821,1847]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="23" pageNumber="24">Figs. 96–98</figureCitation>
); penes whitish with rounded lateral lobes (
<figureCitation id="137BBCA64F35E600FE8D86298363F8BB" box="[280,368,1861,1887]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="23" pageNumber="24">Fig. 96</figureCitation>
). Caudal filaments whitish shaded with light gray.
</paragraph>
<paragraph id="8BFFA0234F35E600FF53860183E4F863" blockId="23.[151,1437,941,1927]" box="[198,503,1901,1927]" pageId="23" pageNumber="24">Female imago. Unknown.</paragraph>
<caption id="DF3FF0AB4F3AE60FFF028661878FF8C1" box="[151,1436,1805,1829]" httpUri="https://zenodo.org/record/179933/files/figure.png" pageId="24" pageNumber="25" targetBox="[372,1214,197,1779]" targetPageId="24">
<paragraph id="8BFFA0234F3AE60FFF028661878FF8C1" blockId="24.[151,1436,1805,1829]" box="[151,1436,1805,1829]" pageId="24" pageNumber="25">
<emphasis id="B9347C314F3AE60FFF028661836BF8C1" bold="true" box="[151,376,1805,1829]" pageId="24" pageNumber="25">FIGURES 158–161.</emphasis>
Nymph, general view: 158,
<taxonomicName id="4C40DBA04F3AE60FFD328662813FF8C1" box="[679,812,1806,1829]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="24" pageNumber="25" phylum="Arthropoda" rank="species" species="argentina">
<emphasis id="B9347C314F3AE60FFD328662813FF8C1" box="[679,812,1806,1829]" italics="true" pageId="24" pageNumber="25">C. argentina</emphasis>
</taxonomicName>
; 159,
<taxonomicName id="4C40DBA04F3AE60FFCE58662861AF8C1" box="[880,1033,1806,1829]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="24" pageNumber="25" phylum="Arthropoda" rank="species" species="burmeisteri">
<emphasis id="B9347C314F3AE60FFCE58662861AF8C1" box="[880,1033,1806,1829]" italics="true" pageId="24" pageNumber="25">C. burmeisteri</emphasis>
</taxonomicName>
; 160,
<taxonomicName id="4C40DBA04F3AE60FFBD9866286F4F8C1" box="[1100,1255,1806,1829]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="24" pageNumber="25" phylum="Arthropoda" rank="species" species="dominguezi">
<emphasis id="B9347C314F3AE60FFBD9866286F4F8C1" box="[1100,1255,1806,1829]" italics="true" pageId="24" pageNumber="25">C. dominguezi</emphasis>
</taxonomicName>
; 161,
<taxonomicName id="4C40DBA04F3AE60FFABC86628786F8C1" box="[1321,1429,1806,1829]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="24" pageNumber="25" phylum="Arthropoda" rank="species" species="ludicra">
<emphasis id="B9347C314F3AE60FFABC86628786F8C1" box="[1321,1429,1806,1829]" italics="true" pageId="24" pageNumber="25">C. ludicra</emphasis>
</taxonomicName>
.
</paragraph>
</caption>
<caption id="DF3FF0AB4F3BE60EFF0284ED8698FA7C" box="[151,1163,1409,1433]" httpUri="https://zenodo.org/record/179934/files/figure.png" pageId="25" pageNumber="26" targetBox="[365,1220,182,1400]" targetPageId="25">
<paragraph id="8BFFA0234F3BE60EFF0284ED8698FA7C" blockId="25.[151,1163,1409,1433]" box="[151,1163,1409,1433]" pageId="25" pageNumber="26">
<emphasis id="B9347C314F3BE60EFF0284ED836BFA7D" bold="true" box="[151,376,1409,1433]" pageId="25" pageNumber="26">FIGURES 162–164.</emphasis>
Nymph, general view: 162,
<taxonomicName id="4C40DBA04F3BE60EFD3D84EE811CFA7D" box="[680,783,1410,1433]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="tenella">
<emphasis id="B9347C314F3BE60EFD3D84EE811CFA7D" box="[680,783,1410,1433]" italics="true" pageId="25" pageNumber="26">C. tenella</emphasis>
</taxonomicName>
; 163,
<taxonomicName id="4C40DBA04F3BE60EFCC684EE81F7FA7D" box="[851,996,1410,1433]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="plaumanni">
<emphasis id="B9347C314F3BE60EFCC684EE81F7FA7D" box="[851,996,1410,1433]" italics="true" pageId="25" pageNumber="26">C. plaumanni</emphasis>
</taxonomicName>
; 164,
<taxonomicName id="4C40DBA04F3BE60EFBBD84EE8697FA7D" box="[1064,1156,1410,1433]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="25" pageNumber="26" phylum="Arthropoda" rank="species" species="uruzu">
<emphasis id="B9347C314F3BE60EFBBD84EE8697FA7D" box="[1064,1156,1410,1433]" italics="true" pageId="25" pageNumber="26">C. uruzu</emphasis>
</taxonomicName>
.
</paragraph>
</caption>
<paragraph id="8BFFA0234F3BE60DFF5384A0830AFE2E" blockId="25.[151,1437,1484,2030]" lastBlockId="26.[151,1436,152,458]" lastPageId="26" lastPageNumber="27" pageId="25" pageNumber="26">
Mature nymph (
<figureCitation id="137BBCA64F3BE60EFE1184A083F8FA02" box="[388,491,1484,1510]" captionStart="FIGURES 162 – 164" captionStartId="25.[151,269,1409,1433]" captionTargetBox="[365,1220,182,1400]" captionTargetId="figure@25.[365,1221,182,1401]" captionTargetPageId="25" captionText="FIGURES 162 – 164. Nymph, general view: 162, C. tenella; 163, C. plaumanni; 164, C. uruzu." httpUri="https://zenodo.org/record/179934/files/figure.png" pageId="25" pageNumber="26">Fig. 164</figureCitation>
). Length of female: body,
<quantity id="4CB80DC64F3BE60EFCB584A081A2FA02" box="[800,945,1484,1510]" metricMagnitude="-3" metricUnit="m" metricValue="4.8" metricValueMax="5.5" metricValueMin="4.1" pageId="25" pageNumber="26" unit="mm" value="4.8" valueMax="5.5" valueMin="4.1">4.1–5.5 mm</quantity>
; caudal filaments,
<quantity id="4CB80DC64F3BE60EFB1884A0870DFA02" box="[1165,1310,1484,1510]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" metricValueMax="4.5" metricValueMin="3.5" pageId="25" pageNumber="26" unit="mm" value="4.0" valueMax="4.5" valueMin="3.5">3.5–4.5 mm</quantity>
. Length of male: body,
<quantity id="4CB80DC64F3BE60EFEBE849883AEF9EA" box="[299,445,1524,1550]" metricMagnitude="-3" metricUnit="m" metricValue="3.65" metricValueMax="3.8" metricValueMin="3.5" pageId="25" pageNumber="26" unit="mm" value="3.65" valueMax="3.8" valueMin="3.5">3.5–3.8 mm</quantity>
, caudal filaments, 3.0 mm. Head yellowish shaded with blackish among ocelli and posterolateral corners (Fig. 171), occiput with a pair of submedian grayish star-like marks; hind margin with frayed microtrichia. Antennae yellowish-white. Mouthparts yellowish shaded with grayish on labrum and mandibles; labrum with rounded lateral margins and shallow anteromedian emargination (
<figureCitation id="137BBCA64F3BE60EFB2F87008748F962" box="[1210,1371,1644,1670]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="25" pageNumber="26">Fig. 102–103</figureCitation>
); distal segment of labial palpi short, segment II of labial palp 1.67–1.90 times the length of segment III (
<figureCitation id="137BBCA64F3BE60EFABC87F8879CF94A" box="[1321,1423,1684,1710]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="25" pageNumber="26">Fig. 105</figureCitation>
). Thorax. Pro- and mesonotum yellowish light brown with paler zones; with irregular gray markings; anterolateral corners of pronotum lightly to moderately projected (
<figureCitation id="137BBCA64F3BE60EFCA2878881F7F91A" box="[823,996,1764,1790]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="25" pageNumber="26">Figs. 106–107</figureCitation>
). Thoracic sterna paler widely shaded with gray. Wingbuds grayish-black except on Cu area, whitish. Legs yellowish-white; coxae II–III with large, tapering, and distally rounded projections (
<figureCitation id="137BBCA64F3BE60EFD0786588153F8AA" box="[658,832,1844,1870]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="25" pageNumber="26">Figs. 108–109</figureCitation>
); femora with a grayish subapical mark, dorsum of femora with numerous setae (
<figureCitation id="137BBCA64F3BE60EFE6C863080F0F892" box="[505,739,1884,1910]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="25" pageNumber="26">Figs. 115, 120–122</figureCitation>
), transverse row at dorsum of femora I with 9 setae; basal and distal portions of tibiae and tarsi paler than the rest; all tarsi with a longitudinal row of robust simple setae, middle and hind tarsi with an additional row of serrated setae; tarsal claws yellowish translucent, very slightly curved, claws I–II with 3–5 small denticles (
<figureCitation id="137BBCA64F3BE60EFD3086B88143F80A" box="[677,848,2004,2030]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="25" pageNumber="26">Figs. 112–113</figureCitation>
), claw III with 23–25 denticles, increasing in size toward apex (
<figureCitation id="137BBCA64F38E60DFEA281F4838EFF56" box="[311,413,152,178]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="26" pageNumber="27">Fig. 114</figureCitation>
). Abdomen dorsally yellowish light brown with paler lateral margins and intersegmental membranes (
<figureCitation id="137BBCA64F38E60DFEC781AC83ABFF3E" box="[338,440,192,218]" 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="26" pageNumber="27">Fig. 178</figureCitation>
); terga I–II slightly darker than the rest, lateral zones of tergum II (at gill bases) whitish; median projection of tergum II well developed (
<figureCitation id="137BBCA64F38E60DFC908184817EFEE6" box="[773,877,232,258]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="26" pageNumber="27">Fig. 104</figureCitation>
). Abdominal sterna (
<figureCitation id="137BBCA64F38E60DFBF3818486D8FEE6" box="[1126,1227,232,258]" 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="26" pageNumber="27">Fig. 184</figureCitation>
) paler than terga, shaded with grayish almost completely except on a pair of submedian and sublateral whitish marks. Posterolateral spines whitish translucent. Operculate gills (
<figureCitation id="137BBCA64F38E60DFC8F80548197FEB6" box="[794,900,312,338]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="26" pageNumber="27">Fig. 110</figureCitation>
) yellowish-brown, remaining gills grayish; microtrichia on dorsum of gill II as in
<figureCitation id="137BBCA64F38E60DFDCE800C80D3FE9E" box="[603,704,352,378]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="26" pageNumber="27">Fig. 116</figureCitation>
; microtrichia from the submarginal ventral row as in
<figureCitation id="137BBCA64F38E60DFAA0800C878BFE9E" box="[1333,1432,352,378]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="26" pageNumber="27">Fig. 111</figureCitation>
. Sternum IX rounded apically, setae on hind margin strong and apically bent inwards. Caudal filaments whitish-yellow.
</paragraph>
<caption id="DF3FF0AB4F38E60DFF0286C28119F80C" httpUri="https://zenodo.org/record/179935/files/figure.png" pageId="26" pageNumber="27" targetBox="[302,1294,502,1958]" targetPageId="26">
<paragraph id="8BFFA0234F38E60DFF0286C28119F80C" blockId="26.[151,1436,1966,2024]" pageId="26" pageNumber="27">
<emphasis id="B9347C314F38E60DFF0286C28369F822" bold="true" box="[151,378,1966,1990]" pageId="26" pageNumber="27">FIGURES 165–166.</emphasis>
Nymph, head color pattern: 165,
<taxonomicName id="4C40DBA04F38E60DFD7886C28165F821" box="[749,886,1966,1989]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="argentina">
<emphasis id="B9347C314F38E60DFD7886C28165F821" box="[749,886,1966,1989]" italics="true" pageId="26" pageNumber="27">C. argentina</emphasis>
</taxonomicName>
; 166,
<taxonomicName id="4C40DBA04F38E60DFC2886C2864AF821" box="[957,1113,1966,1989]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="burmeisteri">
<emphasis id="B9347C314F38E60DFC2886C2864AF821" box="[957,1113,1966,1989]" italics="true" pageId="26" pageNumber="27">C. burmeisteri</emphasis>
</taxonomicName>
; 167,
<taxonomicName id="4C40DBA04F38E60DFB3586C2872FF821" box="[1184,1340,1966,1989]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="dominguezi">
<emphasis id="B9347C314F38E60DFB3586C2872FF821" box="[1184,1340,1966,1989]" italics="true" pageId="26" pageNumber="27">C. dominguezi</emphasis>
</taxonomicName>
; 168,
<taxonomicName id="4C40DBA04F38E60DFA1186C282CCF80C" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="tenella">
<emphasis id="B9347C314F38E60DFA1186C282CCF80C" italics="true" pageId="26" pageNumber="27">C. tenella</emphasis>
</taxonomicName>
; 169,
<taxonomicName id="4C40DBA04F38E60DFEB686BD839CF80C" box="[291,399,2001,2024]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="ludicra">
<emphasis id="B9347C314F38E60DFEB686BD839CF80C" box="[291,399,2001,2024]" italics="true" pageId="26" pageNumber="27">C. ludicra</emphasis>
</taxonomicName>
; 170,
<taxonomicName id="4C40DBA04F38E60DFE4786BD8070F80C" box="[466,611,2001,2024]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="plaumanni">
<emphasis id="B9347C314F38E60DFE4786BD8070F80C" box="[466,611,2001,2024]" italics="true" pageId="26" pageNumber="27">C. plaumanni</emphasis>
</taxonomicName>
; 171,
<taxonomicName id="4C40DBA04F38E60DFD3286BD8110F80C" box="[679,771,2001,2024]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="26" pageNumber="27" phylum="Arthropoda" rank="species" species="uruzu">
<emphasis id="B9347C314F38E60DFD3286BD8110F80C" box="[679,771,2001,2024]" italics="true" pageId="26" pageNumber="27">C. uruzu</emphasis>
</taxonomicName>
.
</paragraph>
</caption>
<caption id="DF3FF0AB4F39E60CFF02861580F3F857" httpUri="https://zenodo.org/record/179936/files/figure.png" pageId="27" pageNumber="28" targetBox="[375,1213,194,1887]" targetPageId="27">
<paragraph id="8BFFA0234F39E60CFF02861580F3F857" blockId="27.[151,1436,1913,1971]" pageId="27" pageNumber="28">
<emphasis id="B9347C314F39E60CFF028615836BF875" bold="true" box="[151,376,1913,1937]" pageId="27" pageNumber="28">FIGURES 172–178.</emphasis>
Nymph, abdominal terga: 172,
<taxonomicName id="4C40DBA04F39E60CFD5C8615815DF874" box="[713,846,1913,1936]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="argentina">
<emphasis id="B9347C314F39E60CFD5C8615815DF874" box="[713,846,1913,1936]" italics="true" pageId="27" pageNumber="28">C. argentina</emphasis>
</taxonomicName>
; 173,
<taxonomicName id="4C40DBA04F39E60CFC078615863FF874" box="[914,1068,1913,1936]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="burmeisteri">
<emphasis id="B9347C314F39E60CFC078615863FF874" box="[914,1068,1913,1936]" italics="true" pageId="27" pageNumber="28">C. burmeisteri</emphasis>
</taxonomicName>
; 174,
<taxonomicName id="4C40DBA04F39E60CFBFB8615871BF874" box="[1134,1288,1913,1936]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="dominguezi">
<emphasis id="B9347C314F39E60CFBFB8615871BF874" box="[1134,1288,1913,1936]" italics="true" pageId="27" pageNumber="28">C. dominguezi</emphasis>
</taxonomicName>
; 175,
<taxonomicName id="4C40DBA04F39E60CFADE861582A8F857" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="ludicra">
<emphasis id="B9347C314F39E60CFADE861582A8F857" italics="true" pageId="27" pageNumber="28">C. ludicra</emphasis>
</taxonomicName>
; 176,
<taxonomicName id="4C40DBA04F39E60CFF6B86F08375F857" box="[254,358,1948,1971]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="tenella">
<emphasis id="B9347C314F39E60CFF6B86F08375F857" box="[254,358,1948,1971]" italics="true" pageId="27" pageNumber="28">C. tenella</emphasis>
</taxonomicName>
; 177,
<taxonomicName id="4C40DBA04F39E60CFE3C86F08029F857" box="[425,570,1948,1971]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="plaumanni">
<emphasis id="B9347C314F39E60CFE3C86F08029F857" box="[425,570,1948,1971]" italics="true" pageId="27" pageNumber="28">C. plaumanni</emphasis>
</taxonomicName>
; 178,
<taxonomicName id="4C40DBA04F39E60CFDE886F080CBF857" box="[637,728,1948,1971]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="27" pageNumber="28" phylum="Arthropoda" rank="species" species="uruzu">
<emphasis id="B9347C314F39E60CFDE886F080CBF857" box="[637,728,1948,1971]" italics="true" pageId="27" pageNumber="28">C. uruzu</emphasis>
</taxonomicName>
.
</paragraph>
</caption>
<caption id="DF3FF0AB4F3EE60BFF0284668049FAA0" httpUri="https://zenodo.org/record/179937/files/figure.png" pageId="28" pageNumber="29" targetBox="[151,1435,178,1265]" targetPageId="28">
<paragraph id="8BFFA0234F3EE60BFF0284668049FAA0" blockId="28.[151,1436,1290,1348]" pageId="28" pageNumber="29">
<emphasis id="B9347C314F3EE60BFF0284668368FAC6" bold="true" box="[151,379,1290,1314]" pageId="28" pageNumber="29">FIGURES 179–184.</emphasis>
Nymph, abdominal sterna: 179,
<taxonomicName id="4C40DBA04F3EE60BFD728466817CFAC5" box="[743,879,1290,1313]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="argentina">
<emphasis id="B9347C314F3EE60BFD728466817CFAC5" box="[743,879,1290,1313]" italics="true" pageId="28" pageNumber="29">C. argentina</emphasis>
</taxonomicName>
; 180,
<taxonomicName id="4C40DBA04F3EE60BFC2D84668646FAC5" box="[952,1109,1290,1313]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="burmeisteri">
<emphasis id="B9347C314F3EE60BFC2D84668646FAC5" box="[952,1109,1290,1313]" italics="true" pageId="28" pageNumber="29">C. burmeisteri</emphasis>
</taxonomicName>
; 181,
<taxonomicName id="4C40DBA04F3EE60BFB0B84668728FAC5" box="[1182,1339,1290,1313]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="dominguezi">
<emphasis id="B9347C314F3EE60BFB0B84668728FAC5" box="[1182,1339,1290,1313]" italics="true" pageId="28" pageNumber="29">C. dominguezi</emphasis>
</taxonomicName>
; 182,
<taxonomicName id="4C40DBA04F3EE60BFA11846682CCFAA0" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="tenella">
<emphasis id="B9347C314F3EE60BFA11846682CCFAA0" italics="true" pageId="28" pageNumber="29">C. tenella</emphasis>
</taxonomicName>
; 183,
<taxonomicName id="4C40DBA04F3EE60BFEB6844183A7FAA0" box="[291,436,1325,1348]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="plaumanni">
<emphasis id="B9347C314F3EE60BFEB6844183A7FAA0" box="[291,436,1325,1348]" italics="true" pageId="28" pageNumber="29">C. plaumanni</emphasis>
</taxonomicName>
; 184,
<taxonomicName id="4C40DBA04F3EE60BFE6284418040FAA0" box="[503,595,1325,1348]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="uruzu">
<emphasis id="B9347C314F3EE60BFE6284418040FAA0" box="[503,595,1325,1348]" italics="true" pageId="28" pageNumber="29">C. uruzu</emphasis>
</taxonomicName>
.
</paragraph>
</caption>
<paragraph id="8BFFA0234F3EE60BFF5384148781F896" blockId="28.[151,1436,1400,2026]" pageId="28" pageNumber="29">
Diagnosis.
<taxonomicName id="4C40DBA04F3EE60BFEDF841483F6FA75" box="[330,485,1400,1425]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="uruzu" status="sp. nov.">
<emphasis id="B9347C314F3EE60BFEDF841483F6FA75" box="[330,485,1400,1425]" italics="true" pageId="28" pageNumber="29">Caenis uruzu</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A207C14A4F3EE60BFE798414806BFA76" box="[492,632,1400,1426]" pageId="28" pageNumber="29" rank="species">new species</taxonomicNameLabel>
can be distinguished from the other species of
<taxonomicName id="4C40DBA04F3EE60BFB0B841486E3FA75" box="[1182,1264,1400,1425]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="genus">
<emphasis id="B9347C314F3EE60BFB0B841486E3FA75" box="[1182,1264,1400,1425]" italics="true" pageId="28" pageNumber="29">Caenis</emphasis>
</taxonomicName>
by the following combination of characters. In the imago: 1) general coloration yellowish brown; 2) prosternal triangle with concave sides, anteriorly blunt (
<figureCitation id="137BBCA64F3EE60BFD9884A48067FA06" box="[525,628,1480,1506]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Fig. 100</figureCitation>
); 3) median filament on abdominal tergum II long (
<figureCitation id="137BBCA64F3EE60BFB4584A48725FA06" box="[1232,1334,1480,1506]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Fig. 101</figureCitation>
); 4) fore legs as long as body; 5) forceps apically rounded (
<figureCitation id="137BBCA64F3EE60BFD7A849C816FF9EE" box="[751,892,1520,1546]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Figs. 96-98</figureCitation>
); 6) central sclerite of styliger elongated (
<figureCitation id="137BBCA64F3EE60BFAF8849C82ABF9D6" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Fig. 96</figureCitation>
); 7) apophyses of styliger sclerite broad and short (
<figureCitation id="137BBCA64F3EE60BFC808774817DF9D6" box="[789,878,1560,1586]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Fig. 96</figureCitation>
). In the nymph: 1) head color pattern as in Fig. 171, hind margin with frayed microtrichia; 2) coxae II–III with well-developed and apically rounded projections (
<figureCitation id="137BBCA64F3EE60BFF4A8704839FF966" box="[223,396,1640,1666]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Figs. 108–109</figureCitation>
); 3) fore tarsi with a longitudinal row of robust simple setae, middle and hind tarsi with a similar row and an additional row of serrated setae; 4) tarsal claws not strongly curved apically (
<figureCitation id="137BBCA64F3EE60BFA8B87FC82D5F936" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Figs. 112– 114</figureCitation>
), apical denticle of tarsal claw III much larger than the others; 5) abdominal color pattern as in
<figureCitation id="137BBCA64F3EE60BFABB87D4878FF936" box="[1326,1436,1720,1746]" 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="28" pageNumber="29">Figs. 178</figureCitation>
and
<figureCitation id="137BBCA64F3EE60BFF5D878C82E4F91E" box="[200,247,1760,1786]" 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="28" pageNumber="29">184</figureCitation>
; 6) labrum with slightly rounded lateral margins (
<figureCitation id="137BBCA64F3EE60BFCAE878C81B2F91E" box="[827,929,1760,1786]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Fig. 103</figureCitation>
); 7) distal segment of labial palpi relatively short, segment II of labial palp 1.67–1.90 times the length of segment III (
<figureCitation id="137BBCA64F3EE60BFC628664864DF8C6" box="[1015,1118,1800,1826]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Fig. 105</figureCitation>
); 8) lingua of hypopharynx with concave fore margin (similar to
<figureCitation id="137BBCA64F3EE60BFDC7865C80AAF8AE" box="[594,697,1840,1866]" 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="28" pageNumber="29">Fig. 156</figureCitation>
); 9) IX sternum rounded apically, setae on hind margin strong and apically bent inwards; 10) microtrichia from dorsum and operculate gills bifurcate and frayed (
<figureCitation id="137BBCA64F3EE60BFA8A86348796F896" box="[1311,1413,1880,1906]" captionStart="FIGURES 96 – 122" captionStartId="19.[151,269,1762,1786]" captionTargetBox="[233,1353,184,1724]" captionTargetId="figure@19.[230,1364,168,1753]" captionTargetPageId="19" captionText="FIGURES 96 – 122. Caenis uruzu. Male imago: 96, genitalia, v. v.; 97 – 98, details of forceps, v. v.; 99, lateral filaments of abdomen; 100, preesternal triangle; 101, detail of finger-like projection of abdominal tergum II, l. v. Nymph: 102, detail of anteromedian emargination of labrum; 103, labrum, d. v.; 104, detail of posteromedian projection of tergum II; 105, labium, v. v. (setae omitted on right side); 106 – 107, pronotal lateral margin; 108, middle coxa; 109, hind coxa; 110, operculate gill; 111, microtrichia on submarginal ventral row of operculate gill; 112, foreclaw; 113, middle claw; 114, hind claw; 115, setae on dorsum of middle and hind femora; 116, microtrichia on dorsum of operculate gill; 117, seta on posterior margin of hind tibia; 118, seta on hind tarsi; 119, setae on transverse dorsal row on fore femora; 120, fore leg; 121, middle leg; 122, hind leg." httpUri="https://zenodo.org/record/179930/files/figure.png" pageId="28" pageNumber="29">Fig. 116</figureCitation>
).
</paragraph>
<paragraph id="8BFFA0234F3EE60AFF5386EC8317FEE6" blockId="28.[151,1436,1400,2026]" lastBlockId="29.[151,1436,152,258]" lastPageId="29" lastPageNumber="30" pageId="28" pageNumber="29">
Discussion.
<taxonomicName id="4C40DBA04F3EE60BFECC86EC83EAF87D" box="[345,505,1920,1945]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="uruzu" status="sp. nov.">
<emphasis id="B9347C314F3EE60BFECC86EC83EAF87D" box="[345,505,1920,1945]" italics="true" pageId="28" pageNumber="29">Caenis uruzu</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A207C14A4F3EE60BFD9186EC8087F87E" box="[516,660,1920,1946]" pageId="28" pageNumber="29" rank="species">new species</taxonomicNameLabel>
belongs to the
<taxonomicName id="4C40DBA04F3EE60BFCC386EC81D5F87D" box="[854,966,1920,1945]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="argentina">
<emphasis id="B9347C314F3EE60BFCC386EC81D5F87D" box="[854,966,1920,1945]" italics="true" pageId="28" pageNumber="29">argentina</emphasis>
</taxonomicName>
-group proposed by
<bibRefCitation id="EFD1DDD24F3EE60BFB5586EC878BF87E" author="Malzacher" box="[1216,1432,1920,1946]" pageId="28" 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>
, because male imagos show a finger-like projection on abdominal tergum II, forelegs are subequal in length to body, and genitalic sclerites are well marked. Nymphs of
<taxonomicName id="4C40DBA04F3EE60BFCDE86BC81A1F80D" box="[843,946,2000,2025]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="uruzu">
<emphasis id="B9347C314F3EE60BFCDE86BC81A1F80D" box="[843,946,2000,2025]" italics="true" pageId="28" pageNumber="29">C. uruzu</emphasis>
</taxonomicName>
were treated as
<taxonomicName id="4C40DBA04F3EE60BFBED86BC86E3F80D" box="[1144,1264,2000,2025]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="28" pageNumber="29" phylum="Arthropoda" rank="species" species="ludicra">
<emphasis id="B9347C314F3EE60BFBED86BC86E3F80D" box="[1144,1264,2000,2025]" italics="true" pageId="28" pageNumber="29">C. ludicra</emphasis>
</taxonomicName>
by
<bibRefCitation id="EFD1DDD24F3EE60AFAB586BC82FAFF56" author="Malzacher" lastPageId="29" lastPageNumber="30" pageId="28" 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>
. However
<taxonomicName id="4C40DBA04F3FE60AFEF081F483CEFF55" box="[357,477,152,177]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="29" pageNumber="30" phylum="Arthropoda" rank="species" species="ludicra">
<emphasis id="B9347C314F3FE60AFEF081F483CEFF55" box="[357,477,152,177]" italics="true" pageId="29" pageNumber="30">C. ludicra</emphasis>
</taxonomicName>
shows a marked western distribution, and it is not expected to be found in sympatry with
<taxonomicName id="4C40DBA04F3FE60AFF6F81AC834CFF3D" box="[250,351,192,217]" class="Insecta" family="Caenidae" genus="Caenis" kingdom="Animalia" order="Ephemeroptera" pageId="29" pageNumber="30" phylum="Arthropoda" rank="species" species="uruzu">
<emphasis id="B9347C314F3FE60AFF6F81AC834CFF3D" box="[250,351,192,217]" italics="true" pageId="29" pageNumber="30">C. uruzu</emphasis>
</taxonomicName>
.Distribution (
<figureCitation id="137BBCA64F3FE60AFD9381AC807DFF3E" box="[518,622,192,218]" captionStart="FIGURES 185 – 188" captionStartId="29.[151,269,1964,1988]" captionText="FIGURES 185 – 188. Distribution maps." pageId="29" pageNumber="30">Fig. 185</figureCitation>
).
<taxonomicName id="4C40DBA04F3FE60AFD1081AC8197FF3E" authority="(Misiones)" baseAuthorityName="Misiones" box="[645,900,192,218]" class="Insecta" family="Caenidae" kingdom="Animalia" order="Ephemeroptera" pageId="29" pageNumber="29" phylum="Arthropoda" rank="subTribe" subTribe="Argentina">
<collectingCountry id="F357E0B34F3FE60AFD1081AC80E9FF3E" box="[645,762,192,218]" name="Argentina" pageId="29" pageNumber="30">Argentina</collectingCountry>
(Misiones)
</taxonomicName>
,
<collectingCountry id="F357E0B34F3FE60AFC0781AC81C9FF3E" box="[914,986,192,218]" name="Brazil" pageId="29" pageNumber="30">Brazil</collectingCountry>
(Santa Catarina, Rio Grande do Sul),
<collectingCountry id="F357E0B34F3FE60AFF0281848313FEE6" box="[151,256,232,258]" name="Uruguay" pageId="29" pageNumber="30">Uruguay</collectingCountry>
.
</paragraph>
</subSubSection>
</treatment>
</document>
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