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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1021.59927" ID-GBIF-Dataset="a7bd7f2f-33d4-4ff6-8912-a1ac27b0183d" ID-PMC="PMC7940326" ID-Pensoft-Pub="1313-2970-1021-37" ID-Pensoft-UUID="3DBB7FA4228056C19B6C015B7373CB4D" ID-PubMed="33716541" ID-ZooBank="1A3C9B28F0EA4CAABE2583CE7A6C763A" ModsDocID="1313-2970-1021-37" checkinTime="1614718816293" checkinUser="pensoft" docAuthor="Li, Xianfu, Luo, Yanping, Jiang, Jian, Wang, Lili &amp; Tong, Xiaoli" docDate="2021" docId="1264241EA2BA5B10917F639A1187BD60" docLanguage="en" docName="ZooKeys 1021: 37-51" docOrigin="ZooKeys 1021" docPubDate="2021-03-01" docSource="http://dx.doi.org/10.3897/zookeys.1021.59927" docTitle="Ameletus daliensis Tong 2021, sp. nov." docType="treatment" docUuid="C2F34991-74B7-4842-8557-F97F6FEE5578" docUuidSource="ZooBank" docVersion="5" id="3DBB7FA4228056C19B6C015B7373CB4D" lastPageNumber="37" masterDocId="3DBB7FA4228056C19B6C015B7373CB4D" masterDocTitle="Description of a new species of the genus Ameletus Eaton, 1885 (Ephemeroptera, Ameletidae) from Yunnan, China" masterLastPageNumber="51" masterPageNumber="37" pageNumber="37" updateTime="1668149847659" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Description of a new species of the genus Ameletus Eaton, 1885 (Ephemeroptera, Ameletidae) from Yunnan, China</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Li, Xianfu</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-1258-1573</mods:nameIdentifier>
<mods:affiliation>Institute of Eastern-Himalaya Biodiversity Research, Dali University, Dali 671000, Yunnan, China &amp; Collaborative Innovation Center for Biodiversity and Conservation in the Three Parallel Rivers Region of China, Dali University, Dali, Yunnan, China &amp; The Provincial Innovation Team of Biodiversity Conservation and Utility of the Three Parallel Rivers Region from Dali University, Dali, Yunnan, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Luo, Yanping</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-5077-3245</mods:nameIdentifier>
<mods:affiliation>Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510642, Guangdong, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Jiang, Jian</mods:namePart>
<mods:affiliation>Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510642, Guangdong, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wang, Lili</mods:namePart>
<mods:affiliation>Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510642, Guangdong, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Tong, Xiaoli</mods:namePart>
<mods:affiliation>Collaborative Innovation Center for Biodiversity and Conservation in the Three Parallel Rivers Region of China, Dali University, Dali, Yunnan, China &amp; Department of Entomology, College of Plant Protection, South China Agricultural University, Guangzhou 510642, Guangdong, China</mods:affiliation>
<mods:nameIdentifier type="email">xtong@scau.edu.cn</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2021</mods:date>
<mods:detail type="pubDate">
<mods:number>2021-03-01</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>1021</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>37</mods:start>
<mods:end>51</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.1021.59927</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1021.59927</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-1021-37</mods:identifier>
<mods:identifier type="ZooBank">1A3C9B28F0EA4CAABE2583CE7A6C763A</mods:identifier>
<mods:identifier type="Pensoft-UUID">3DBB7FA4228056C19B6C015B7373CB4D</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="179985136" LSID="urn:lsid:zoobank.org:act:C2F34991-74B7-4842-8557-F97F6FEE5578" httpUri="http://treatment.plazi.org/id/1264241EA2BA5B10917F639A1187BD60" lastPageNumber="37" pageId="0" pageNumber="37">
<subSubSection pageId="0" pageNumber="37" type="nomenclature">
<paragraph pageId="0" pageNumber="37">
<taxonomicName LSID="http://zoobank.org/C2F34991-74B7-4842-8557-F97F6FEE5578" authority="Tong" authorityName="Tong" authorityYear="2021" class="Insecta" family="Ameletidae" genus="Ameletus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ameletus daliensis" order="Ephemeroptera" pageId="0" pageNumber="37" phylum="Arthropoda" rank="species" species="daliensis" status="sp. nov.">Ameletus daliensis Tong</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="37">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figures 2, 3" captionStartId="F2" captionText="Figures 2, 3. Larval habitus of Ameletus daliensis Tong, sp. nov. 2 dorsal view (upper: female; lower: male) 3 ventral view (upper: female; lower: male)." figureDoi="10.3897/zookeys.1021.59927.figures2-3" httpUri="https://binary.pensoft.net/fig/515210" pageId="0" pageNumber="37">Figs 2-3</figureCitation>
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">, 4-19</figureCitation>
<figureCitation captionStart="Figures 2025" captionStartId="F4" captionText="Figures 20 - 25. Larva of Ameletus daliensis Tong, sp. nov. 20 abdominal tergites VII-VIII 21 sternite VIII 22 abdominal tergite X (male) 23 trochanter of hind leg 24 female sternite IX 25 male sternite IX (showing penis buds, ventral view)." figureDoi="10.3897/zookeys.1021.59927.figures20-25" httpUri="https://binary.pensoft.net/fig/515212" pageId="0" pageNumber="37">, 20-25</figureCitation>
<figureCitation captionStart="Figures 2629" captionStartId="F5" captionText="Figures 26 - 29. Ameletus daliensis Tong, sp. nov. 26 male imago 27 male imago (dorsal view) 28 head of male sub-imago 29 egg (SEM)." figureDoi="10.3897/zookeys.1021.59927.figures26-29" httpUri="https://binary.pensoft.net/fig/515213" pageId="0" pageNumber="37">, 26-29</figureCitation>
<figureCitation captionStart="Figures 3034" captionStartId="F6" captionText="Figures 30 - 34. Imago of Ameletus daliensis Tong, sp. nov. 30 forewing 31 hind wing 32 fore leg 33 middle leg 34 hind leg." figureDoi="10.3897/zookeys.1021.59927.figures30-34" httpUri="https://binary.pensoft.net/fig/515214" pageId="0" pageNumber="37">, 30-34</figureCitation>
<figureCitation captionStart="Figures 3539" captionStartId="F7" captionText="Figures 35 - 39. Male genitals of Ameletus daliensis Tong, sp. nov. 35 terminal abdominal sternites 36 penis lobes 37 penis lobes (ventral view) 38 penis lobes (dorsal view) 39 penis lobes (lateral view)." figureDoi="10.3897/zookeys.1021.59927.figures35-39" httpUri="https://binary.pensoft.net/fig/515215" pageId="0" pageNumber="37">, 35-39</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="37" type="materials_examined">
<paragraph pageId="0" pageNumber="37">Material examined.</paragraph>
<paragraph pageId="0" pageNumber="37">
<materialsCitation ID-GBIF-Occurrence="3063643301" collectingDate="2020-05-15" collectionCode="BMDU" collectorName="Xianfu Li." country="China" county="Dali City" elevation="2020" location="Mocan Stream" municipality="Mt. Cangshan" specimenCount="1" stateProvince="Yunnan" typeStatus="holotype">
<emphasis bold="true" italics="true" pageId="0" pageNumber="37">
<typeStatus>Holotype</typeStatus>
:
</emphasis>
male mature larva (in ethanol, deposited in
<collectionCode>BMDU</collectionCode>
),
<emphasis bold="true" pageId="0" pageNumber="37">
<collectingCountry name="China">China</collectingCountry>
</emphasis>
,
<collectingRegion country="China" name="Yunnan">Yunnan Province</collectingRegion>
,
<collectingCounty>Dali City</collectingCounty>
,
<collectingMunicipality>Mt. Cangshan</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:1264241EA2BA5B10917F639A1187BD60:2D58BAF74B206A267A5C1D0D6C379F59" country="China" county="Dali City" municipality="Mt. Cangshan" name="Mocan Stream" stateProvince="Yunnan">Mocan Stream</location>
(
<elevation metricMagnitude="3" metricUnit="m" metricValue="2.02" unit="m" value="2020.0">
<quantity metricMagnitude="3" metricUnit="m" metricValue="2.02" unit="m" value="2020.0">2020 m</quantity>
a.s.l.
</elevation>
),
<date value="2020-05-15">
<collectingDate value="2020-05-15">15.v.2020</collectingDate>
</date>
, coll.
<collectorName>Xianfu Li.</collectorName>
</materialsCitation>
<materialsCitation ID-GBIF-Occurrence="3063643302" collectingDate="2018-05-01" collectionCode="BMDU, SCAU" collectorName="Xianfu Li" country="China" county="Dali City" elevation="2220" location="Heilong Stream" municipality="Mt. Cangshan" specimenCount="34" specimenCount-larva="34" stateProvince="Yunnan" typeStatus="paratype">
<emphasis bold="true" italics="true" pageId="0" pageNumber="37">
<typeStatus>Paratypes</typeStatus>
</emphasis>
(in ethanol, one male imago reared from larva and one larva are deposited in
<collectionCode>BMDU</collectionCode>
, the remaining in
<collectionCode>SCAU</collectionCode>
):
<specimenCount type="larva">14 larvae</specimenCount>
and two imagos reared from larvae with same data as holotype;
<specimenCount type="larva">20 larvae</specimenCount>
, one female sub-imago and one male imago reared from larvae,
<emphasis bold="true" pageId="0" pageNumber="37">
<collectingRegion country="China" name="Yunnan">Yunnan</collectingRegion>
</emphasis>
,
<collectingCounty>Dali City</collectingCounty>
,
<collectingMunicipality>Mt. Cangshan</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:1264241EA2BA5B10917F639A1187BD60:0AF5259ED268A1C4E39DD99DD5DCE3AF" county="Dali City" municipality="Mt. Cangshan" name="Heilong Stream" stateProvince="Yunnan">Heilong Stream</location>
(
<elevation metricMagnitude="3" metricUnit="m" metricValue="2.2199999999999998" unit="m" value="2220.0">
<quantity metricMagnitude="3" metricUnit="m" metricValue="2.2199999999999998" unit="m" value="2220.0">2220 m</quantity>
a.s.l.
</elevation>
),
<date value="2018-05-01">
<collectingDate value="2018-05-01">1.v.2018</collectingDate>
</date>
, coll.
<collectorName>Xianfu Li</collectorName>
</materialsCitation>
;
<materialsCitation ID-GBIF-Occurrence="3063643304" collectingDate="2019-05-28" collectorName="Xianfu Li." country="China" county="Dali City" location="Heilong Stream" municipality="Mt. Cangshan" specimenCount="1" stateProvince="Yunnan" typeStatus="paratype">
one male sub-imago,
<collectingCounty>Dali City</collectingCounty>
,
<collectingMunicipality>Mt. Cangshan</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:1264241EA2BA5B10917F639A1187BD60:1CD5CBB400E14D1B75220E12718E881C" country="China" county="Dali City" municipality="Mt. Cangshan" name="Heilong Stream" stateProvince="Yunnan">Heilong Stream</location>
,
<date value="2019-05-28">
<collectingDate value="2019-05-28">28.v.2019</collectingDate>
</date>
, coll.
<collectorName>Xianfu Li.</collectorName>
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="37" type="diagnosis">
<paragraph pageId="0" pageNumber="37">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" italics="true" pageId="0" pageNumber="37">Larva</emphasis>
has the following combination of characters: 1) body with contrasting colour pattern; 2) labrum ventrally bordered with row of dense feathered setae (rare bi-forked setae) along anterior margin; 3) inner margin of trochanter in hind leg bearing row of brush-like fine and dense setae; 4) abdominal tergites I-X each with pointed spines on posterior margin; sternites without any spines on posterior margin, except V-VIII with tiny spines laterally; sternite
<collectionCode>IX</collectionCode>
with deep V-shaped cleft in both sexes.
<emphasis bold="true" pageId="0" pageNumber="37">
<emphasis italics="true" pageId="0" pageNumber="37">Sub-imago</emphasis>
.
</emphasis>
1) labial and maxillary palpi present and clearly visible; 2) wings semi-transparent, all cross-veins bordered around by dark brown.
<emphasis bold="true" pageId="0" pageNumber="37">
<emphasis italics="true" pageId="0" pageNumber="37">Imago</emphasis>
.
</emphasis>
1) labial and maxillary palpi present, but vestigial; 2) forewing transparent,
<collectionCode country="0" name="Mohonk Preserve, Inc.">MP</collectionCode>
2 turns downwards to meet CuA, stigmatic area suffused with milky and divided by a longitudinal vein; hind wings hyaline with short costal projection near the base; 3) genital forceps dark brown, apices of lobes round and slightly bent inwardly, ventral plates absent.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="37" type="description">
<paragraph pageId="0" pageNumber="37">Description.</paragraph>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" italics="true" pageId="0" pageNumber="37">Mature larva</emphasis>
(in ethanol) (Figs
<figureCitation captionStart="Figures 2, 3" captionStartId="F2" captionText="Figures 2, 3. Larval habitus of Ameletus daliensis Tong, sp. nov. 2 dorsal view (upper: female; lower: male) 3 ventral view (upper: female; lower: male)." figureDoi="10.3897/zookeys.1021.59927.figures2-3" httpUri="https://binary.pensoft.net/fig/515210" pageId="0" pageNumber="37">2</figureCitation>
,
<figureCitation captionStart="Figures 2, 3" captionStartId="F2" captionText="Figures 2, 3. Larval habitus of Ameletus daliensis Tong, sp. nov. 2 dorsal view (upper: female; lower: male) 3 ventral view (upper: female; lower: male)." figureDoi="10.3897/zookeys.1021.59927.figures2-3" httpUri="https://binary.pensoft.net/fig/515210" pageId="0" pageNumber="37">3</figureCitation>
). Body length 14 (12.5-15.0) mm; cerci 7 (6.0-7.5) mm. Head brown, except ocelli pale. Eyes blackish-grey. Antenna brown dorsally at base, flagellum light brown. Clypeus brown; labrum mainly brown with two longitudinal dark brown stripes submedially. Pronotum dark brown with light brown irregular markings and one pale mesal line, meso- and metanotum brown with some irregular dark brown streaks and markings. Legs largely brown, except femora with pale patches on sub-basal and sub-distal areas, tarsi dark brown near apex. Abdominal tergites with contrasting colour pattern, tergite I white with diffuse light brown in a form of triangle medially, tergites II-III and VI-VII white, each with pair of diffuse light brown longitudinal bends sub-medially, tergites
<collectionCode>IV-V</collectionCode>
and
<collectionCode>VIII-IX</collectionCode>
mainly brown, each with longitudinal pale stripe medially, tergite X white with brown along posterior margin and pair of longitudinal light brown streaks; tergites II-IX each with pair of dark brown oblique stripes sub-medially and pair of dark brown stripes on sides; abdominal sternites brown, except sternites I,
<collectionCode country="Norway" name="Mykotektet, National Veterinary Institute">VI</collectionCode>
,
<collectionCode>VII</collectionCode>
and
<collectionCode>IX</collectionCode>
paler; sternites II-VIII each with ganglionic marking medially (Fig.
<figureCitation captionStart="Figures 2, 3" captionStartId="F2" captionText="Figures 2, 3. Larval habitus of Ameletus daliensis Tong, sp. nov. 2 dorsal view (upper: female; lower: male) 3 ventral view (upper: female; lower: male)." figureDoi="10.3897/zookeys.1021.59927.figures2-3" httpUri="https://binary.pensoft.net/fig/515210" pageId="0" pageNumber="37">3</figureCitation>
), II-IX each with pair of small pale spots on anterolateral corners. Generally, the above colour pattern can change slightly in intensity, depending on the life stage.
</paragraph>
<caption doi="10.3897/zookeys.1021.59927.figures2-3" httpUri="https://binary.pensoft.net/fig/515210" pageId="0" pageNumber="37" start="Figures 2, 3" startId="F2">
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">Figures 2, 3.</emphasis>
Larval habitus of
<taxonomicName authorityName="Tong" authorityYear="2021" class="Insecta" family="Ameletidae" genus="Ameletus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ameletus daliensis" order="Ephemeroptera" pageId="0" pageNumber="37" phylum="Arthropoda" rank="species" species="daliensis">
<emphasis italics="true" pageId="0" pageNumber="37">Ameletus daliensis</emphasis>
</taxonomicName>
Tong, sp. nov.
<emphasis bold="true" pageId="0" pageNumber="37">2</emphasis>
dorsal view (upper: female; lower: male)
<emphasis bold="true" pageId="0" pageNumber="37">3</emphasis>
ventral view (upper: female; lower: male).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">
<emphasis italics="true" pageId="0" pageNumber="37">Head</emphasis>
.
</emphasis>
Flagellum of antenna with approximately 15-17 segments. Labrum (Fig.
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">4</figureCitation>
) rectangle (length to width ratio approximately 0.7:1) with shallow indentation on anterior margin, ventrally bordered with row of dense feathered setae (rarely bi-forked setae) along anterior margin. Outer incisor of left mandible with 4 denticles, first denticle longest, rest gradually getting shorter; outer incisor of right mandible with 3 denticles (Fig.
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">5</figureCitation>
), first denticle longest, second denticle slightly shorter or subequal to third. Hypopharynx as in Fig.
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">11</figureCitation>
, lingua with one median projection covered with hair-like fine setae. Right and left maxillae similar in structure (Fig.
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">6</figureCitation>
), crown of each maxilla with 27-31 comb-shaped setae and first seta with approximately 20 pointed denticles (Fig.
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">8</figureCitation>
), lateral galealacinia with row of approximately 14 long, feathered setae; maxillary palp 3-segmented, length ratio from basal to apical segments = 2.3:1.4:1, apex of terminal segment with one small hook (Fig.
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">7</figureCitation>
). Apical margin of glossae truncate and straight with row of long, spatulate flat setae widened towards apex (Fig.
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">9</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37" start="Figures 419" startId="F3">
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">Figures 4-19.</emphasis>
Larva of
<taxonomicName authorityName="Tong" authorityYear="2021" class="Insecta" family="Ameletidae" genus="Ameletus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ameletus daliensis" order="Ephemeroptera" pageId="0" pageNumber="37" phylum="Arthropoda" rank="species" species="daliensis">
<emphasis italics="true" pageId="0" pageNumber="37">Ameletus daliensis</emphasis>
</taxonomicName>
Tong, sp. nov.
<emphasis bold="true" pageId="0" pageNumber="37">4</emphasis>
labrum (dorsal view)
<emphasis bold="true" pageId="0" pageNumber="37">5</emphasis>
right mandible
<emphasis bold="true" pageId="0" pageNumber="37">6</emphasis>
right maxillae
<emphasis bold="true" pageId="0" pageNumber="37">7</emphasis>
apex of terminal segment of maxillary palp (showing hook)
<emphasis bold="true" pageId="0" pageNumber="37">8</emphasis>
comb-shaped setae of maxilla (showing first seta)
<emphasis bold="true" pageId="0" pageNumber="37">9</emphasis>
labium
<emphasis bold="true" pageId="0" pageNumber="37">10</emphasis>
claw
<emphasis bold="true" pageId="0" pageNumber="37">11</emphasis>
hypopharynx (left: ventral view; right: dorsal view)
<emphasis bold="true" pageId="0" pageNumber="37">12</emphasis>
femur of foreleg
<emphasis bold="true" pageId="0" pageNumber="37">13-19</emphasis>
gills I-VII.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">
<emphasis italics="true" pageId="0" pageNumber="37">Thorax</emphasis>
.
</emphasis>
Dorsal surface of legs covered with many minute spine-like setae; apices of femora with crosswise row of distinct stout spine-like setae (Fig.
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">12</figureCitation>
): fore, middle and hind femora with 7-8, 4-5 and 3 stout setae at apices, respectively. Claws slightly curved and without denticles (Fig.
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">10</figureCitation>
). Inner margin of trochanter in hind leg bearing row of brush-like fine and dense setae (Fig.
<figureCitation captionStart="Figures 2025" captionStartId="F4" captionText="Figures 20 - 25. Larva of Ameletus daliensis Tong, sp. nov. 20 abdominal tergites VII-VIII 21 sternite VIII 22 abdominal tergite X (male) 23 trochanter of hind leg 24 female sternite IX 25 male sternite IX (showing penis buds, ventral view)." figureDoi="10.3897/zookeys.1021.59927.figures20-25" httpUri="https://binary.pensoft.net/fig/515212" pageId="0" pageNumber="37">23</figureCitation>
), fore and middle trochanters without such setae.
</paragraph>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">
<emphasis italics="true" pageId="0" pageNumber="37">Abdomen</emphasis>
.
</emphasis>
Tergites I-X each with pointed spines on posterior margin (Figs
<figureCitation captionStart="Figures 2025" captionStartId="F4" captionText="Figures 20 - 25. Larva of Ameletus daliensis Tong, sp. nov. 20 abdominal tergites VII-VIII 21 sternite VIII 22 abdominal tergite X (male) 23 trochanter of hind leg 24 female sternite IX 25 male sternite IX (showing penis buds, ventral view)." figureDoi="10.3897/zookeys.1021.59927.figures20-25" httpUri="https://binary.pensoft.net/fig/515212" pageId="0" pageNumber="37">20</figureCitation>
,
<figureCitation captionStart="Figures 2025" captionStartId="F4" captionText="Figures 20 - 25. Larva of Ameletus daliensis Tong, sp. nov. 20 abdominal tergites VII-VIII 21 sternite VIII 22 abdominal tergite X (male) 23 trochanter of hind leg 24 female sternite IX 25 male sternite IX (showing penis buds, ventral view)." figureDoi="10.3897/zookeys.1021.59927.figures20-25" httpUri="https://binary.pensoft.net/fig/515212" pageId="0" pageNumber="37">22</figureCitation>
); sternites I-IV without any spines on posterior margin, V-VIII with tiny spines (Fig.
<figureCitation captionStart="Figures 2025" captionStartId="F4" captionText="Figures 20 - 25. Larva of Ameletus daliensis Tong, sp. nov. 20 abdominal tergites VII-VIII 21 sternite VIII 22 abdominal tergite X (male) 23 trochanter of hind leg 24 female sternite IX 25 male sternite IX (showing penis buds, ventral view)." figureDoi="10.3897/zookeys.1021.59927.figures20-25" httpUri="https://binary.pensoft.net/fig/515212" pageId="0" pageNumber="37">21</figureCitation>
) on posterior margin laterally (visible only under high magnification); surfaces of tergites and sternites I-IV without spine-like setae, but V-IX covered with tiny spine-like setae (Fig.
<figureCitation captionStart="Figures 2025" captionStartId="F4" captionText="Figures 20 - 25. Larva of Ameletus daliensis Tong, sp. nov. 20 abdominal tergites VII-VIII 21 sternite VIII 22 abdominal tergite X (male) 23 trochanter of hind leg 24 female sternite IX 25 male sternite IX (showing penis buds, ventral view)." figureDoi="10.3897/zookeys.1021.59927.figures20-25" httpUri="https://binary.pensoft.net/fig/515212" pageId="0" pageNumber="37">20</figureCitation>
), sternite
<collectionCode>IX</collectionCode>
with deep V-shaped cleft in both sexes, female with acute dentate emargination medially (Fig.
<figureCitation captionStart="Figures 2025" captionStartId="F4" captionText="Figures 20 - 25. Larva of Ameletus daliensis Tong, sp. nov. 20 abdominal tergites VII-VIII 21 sternite VIII 22 abdominal tergite X (male) 23 trochanter of hind leg 24 female sternite IX 25 male sternite IX (showing penis buds, ventral view)." figureDoi="10.3897/zookeys.1021.59927.figures20-25" httpUri="https://binary.pensoft.net/fig/515212" pageId="0" pageNumber="37">24</figureCitation>
), male without any denticles, penis buds without spine-like setae (Fig.
<figureCitation captionStart="Figures 2025" captionStartId="F4" captionText="Figures 20 - 25. Larva of Ameletus daliensis Tong, sp. nov. 20 abdominal tergites VII-VIII 21 sternite VIII 22 abdominal tergite X (male) 23 trochanter of hind leg 24 female sternite IX 25 male sternite IX (showing penis buds, ventral view)." figureDoi="10.3897/zookeys.1021.59927.figures20-25" httpUri="https://binary.pensoft.net/fig/515212" pageId="0" pageNumber="37">25</figureCitation>
); posterolateral spines on abdominal segments
<collectionCode>VIII-IX</collectionCode>
relatively short. Gills on abdominal segments I-VII (Figs
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">13-19</figureCitation>
); gills I-II white and oval, widest at apical half, each with short costal and anal ribs (Figs
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">13</figureCitation>
,
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">14</figureCitation>
); gills III-VII white with brown ribs and black tracheae, each with one strong costal rib and distinct serrations on costal margin and with one strong anal rib far from anal margin (Figs
<figureCitation captionStart="Figures 419" captionStartId="F3" captionText="Figures 4 - 19. Larva of Ameletus daliensis Tong, sp. nov. 4 labrum (dorsal view) 5 right mandible 6 right maxillae 7 apex of terminal segment of maxillary palp (showing hook) 8 comb-shaped setae of maxilla (showing first seta) 9 labium 10 claw 11 hypopharynx (left: ventral view; right: dorsal view) 12 femur of foreleg 13 - 19 gills I-VII." figureDoi="10.3897/zookeys.1021.59927.figures4-19" httpUri="https://binary.pensoft.net/fig/515211" pageId="0" pageNumber="37">15-19</figureCitation>
). Ratios of maximum width to length: gill I = 0.71, gill II = 0.66, gills III-IV = 0.48, gill V-VI = 0.50 and
<collectionCode>VII</collectionCode>
= 0.45. Cerci dark brown and median caudal filament paler (Figs
<figureCitation captionStart="Figures 2, 3" captionStartId="F2" captionText="Figures 2, 3. Larval habitus of Ameletus daliensis Tong, sp. nov. 2 dorsal view (upper: female; lower: male) 3 ventral view (upper: female; lower: male)." figureDoi="10.3897/zookeys.1021.59927.figures2-3" httpUri="https://binary.pensoft.net/fig/515210" pageId="0" pageNumber="37">2</figureCitation>
,
<figureCitation captionStart="Figures 2, 3" captionStartId="F2" captionText="Figures 2, 3. Larval habitus of Ameletus daliensis Tong, sp. nov. 2 dorsal view (upper: female; lower: male) 3 ventral view (upper: female; lower: male)." figureDoi="10.3897/zookeys.1021.59927.figures2-3" httpUri="https://binary.pensoft.net/fig/515210" pageId="0" pageNumber="37">3</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1021.59927.figures20-25" httpUri="https://binary.pensoft.net/fig/515212" pageId="0" pageNumber="37" start="Figures 2025" startId="F4">
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">Figures 20-25.</emphasis>
Larva of
<taxonomicName authorityName="Tong" authorityYear="2021" class="Insecta" family="Ameletidae" genus="Ameletus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ameletus daliensis" order="Ephemeroptera" pageId="0" pageNumber="37" phylum="Arthropoda" rank="species" species="daliensis">
<emphasis italics="true" pageId="0" pageNumber="37">Ameletus daliensis</emphasis>
</taxonomicName>
Tong, sp. nov.
<emphasis bold="true" pageId="0" pageNumber="37">20</emphasis>
abdominal tergites VII-VIII
<emphasis bold="true" pageId="0" pageNumber="37">21</emphasis>
sternite VIII
<emphasis bold="true" pageId="0" pageNumber="37">22</emphasis>
abdominal tergite X (male)
<emphasis bold="true" pageId="0" pageNumber="37">23</emphasis>
trochanter of hind leg
<specimenCount type="female">
<emphasis bold="true" pageId="0" pageNumber="37">24</emphasis>
female
</specimenCount>
sternite
<collectionCode>IX</collectionCode>
<specimenCount type="male">
<emphasis bold="true" pageId="0" pageNumber="37">25</emphasis>
male
</specimenCount>
sternite
<collectionCode>IX</collectionCode>
(showing penis buds, ventral view).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" italics="true" pageId="0" pageNumber="37">Male imago</emphasis>
(in alcohol). Length (mm): Body 13 (12.5-14.0); forewings 12 (11.5-12.5); cerci 19 (16.0-22.0).
</paragraph>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">
<emphasis italics="true" pageId="0" pageNumber="37">Head</emphasis>
.
</emphasis>
Upper portion of compound eyes grey, lower portion dark grey (Figs
<figureCitation captionStart="Figures 2629" captionStartId="F5" captionText="Figures 26 - 29. Ameletus daliensis Tong, sp. nov. 26 male imago 27 male imago (dorsal view) 28 head of male sub-imago 29 egg (SEM)." figureDoi="10.3897/zookeys.1021.59927.figures26-29" httpUri="https://binary.pensoft.net/fig/515213" pageId="0" pageNumber="37">26</figureCitation>
,
<figureCitation captionStart="Figures 2629" captionStartId="F5" captionText="Figures 26 - 29. Ameletus daliensis Tong, sp. nov. 26 male imago 27 male imago (dorsal view) 28 head of male sub-imago 29 egg (SEM)." figureDoi="10.3897/zookeys.1021.59927.figures26-29" httpUri="https://binary.pensoft.net/fig/515213" pageId="0" pageNumber="37">27</figureCitation>
). Antennae light brown. Ocelli whitish. Labial and maxillary palpi present, but vestigial.
<emphasis bold="true" italics="true" pageId="0" pageNumber="37">Thorax</emphasis>
: Pronotum dark brown. Anteronotal protuberance brown, posterolateral sides dark brown; medioscutum brown, submedioscutum dark brown, median longitudinal suture dark brown (Fig.
<figureCitation captionStart="Figures 2629" captionStartId="F5" captionText="Figures 26 - 29. Ameletus daliensis Tong, sp. nov. 26 male imago 27 male imago (dorsal view) 28 head of male sub-imago 29 egg (SEM)." figureDoi="10.3897/zookeys.1021.59927.figures26-29" httpUri="https://binary.pensoft.net/fig/515213" pageId="0" pageNumber="37">27</figureCitation>
); sublateroscutum brown to dark brown; posterior scuttle protuberance brown with narrow white patch posterolaterally; scutellum brown, infrascutellum dark brown, scuto-scutellar impression light brown with pale lateral margins. Foreleg dark brown, except light yellowish-brown at basal 1/3 of femur (Fig.
<figureCitation captionStart="Figures 3034" captionStartId="F6" captionText="Figures 30 - 34. Imago of Ameletus daliensis Tong, sp. nov. 30 forewing 31 hind wing 32 fore leg 33 middle leg 34 hind leg." figureDoi="10.3897/zookeys.1021.59927.figures30-34" httpUri="https://binary.pensoft.net/fig/515214" pageId="0" pageNumber="37">32</figureCitation>
); middle and hind legs similar in colour and lighter than forelegs (Figs
<figureCitation captionStart="Figures 3034" captionStartId="F6" captionText="Figures 30 - 34. Imago of Ameletus daliensis Tong, sp. nov. 30 forewing 31 hind wing 32 fore leg 33 middle leg 34 hind leg." figureDoi="10.3897/zookeys.1021.59927.figures30-34" httpUri="https://binary.pensoft.net/fig/515214" pageId="0" pageNumber="37">33</figureCitation>
,
<figureCitation captionStart="Figures 3034" captionStartId="F6" captionText="Figures 30 - 34. Imago of Ameletus daliensis Tong, sp. nov. 30 forewing 31 hind wing 32 fore leg 33 middle leg 34 hind leg." figureDoi="10.3897/zookeys.1021.59927.figures30-34" httpUri="https://binary.pensoft.net/fig/515214" pageId="0" pageNumber="37">34</figureCitation>
); tibia pale and tarsus light brown, dorsal surface without spinules. Length of foreleg segments (mm): femur 2.7; tibia 2.7; tarsal segments 0.8, 1.7, 1.6, 1.1 and 0.5. Fore wings membrane transparent (Fig.
<figureCitation captionStart="Figures 3034" captionStartId="F6" captionText="Figures 30 - 34. Imago of Ameletus daliensis Tong, sp. nov. 30 forewing 31 hind wing 32 fore leg 33 middle leg 34 hind leg." figureDoi="10.3897/zookeys.1021.59927.figures30-34" httpUri="https://binary.pensoft.net/fig/515214" pageId="0" pageNumber="37">30</figureCitation>
), all veins dark brown with cross-veins lighter. Vein RS forked at about 1/4 of distance from base to margin; MA forked at middle of wing;
<collectionCode country="0" name="Mohonk Preserve, Inc.">MP</collectionCode>
2 turns downwards to meet CuA; stigmatic area suffused with milky and divided by longitudinal vein; cross-veins between C and
<collectionCode country="Chile" name="Departamento de Geologia, Universidad de Chile">R</collectionCode>
veins bordering around by dark brown. Hind wings hyaline with short costal projection near the base; vein MA forked at middle with one intercalary vein between MA1 and MA2;
<collectionCode country="0" name="Mohonk Preserve, Inc.">MP</collectionCode>
forked about one-third of distance from base to margin (Fig.
<figureCitation captionStart="Figures 3034" captionStartId="F6" captionText="Figures 30 - 34. Imago of Ameletus daliensis Tong, sp. nov. 30 forewing 31 hind wing 32 fore leg 33 middle leg 34 hind leg." figureDoi="10.3897/zookeys.1021.59927.figures30-34" httpUri="https://binary.pensoft.net/fig/515214" pageId="0" pageNumber="37">31</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1021.59927.figures26-29" httpUri="https://binary.pensoft.net/fig/515213" pageId="0" pageNumber="37" start="Figures 2629" startId="F5">
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">Figures 26-29.</emphasis>
<taxonomicName authorityName="Tong" authorityYear="2021" class="Insecta" family="Ameletidae" genus="Ameletus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ameletus daliensis" order="Ephemeroptera" pageId="0" pageNumber="37" phylum="Arthropoda" rank="species" species="daliensis">
<emphasis italics="true" pageId="0" pageNumber="37">Ameletus daliensis</emphasis>
</taxonomicName>
Tong, sp. nov.
<specimenCount type="male">
<emphasis bold="true" pageId="0" pageNumber="37">26</emphasis>
male
</specimenCount>
imago
<specimenCount type="male">
<emphasis bold="true" pageId="0" pageNumber="37">27</emphasis>
male
</specimenCount>
imago (dorsal view)
<emphasis bold="true" pageId="0" pageNumber="37">28</emphasis>
head of male sub-imago
<specimenCount type="egg">
<emphasis bold="true" pageId="0" pageNumber="37">29</emphasis>
egg
</specimenCount>
(
<collectionCode>SEM</collectionCode>
).
</paragraph>
</caption>
<caption doi="10.3897/zookeys.1021.59927.figures30-34" httpUri="https://binary.pensoft.net/fig/515214" pageId="0" pageNumber="37" start="Figures 3034" startId="F6">
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">Figures 30-34.</emphasis>
Imago of
<taxonomicName authorityName="Tong" authorityYear="2021" class="Insecta" family="Ameletidae" genus="Ameletus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ameletus daliensis" order="Ephemeroptera" pageId="0" pageNumber="37" phylum="Arthropoda" rank="species" species="daliensis">
<emphasis italics="true" pageId="0" pageNumber="37">Ameletus daliensis</emphasis>
</taxonomicName>
Tong, sp. nov.
<emphasis bold="true" pageId="0" pageNumber="37">30</emphasis>
forewing
<emphasis bold="true" pageId="0" pageNumber="37">31</emphasis>
hind wing
<emphasis bold="true" pageId="0" pageNumber="37">32</emphasis>
fore leg
<emphasis bold="true" pageId="0" pageNumber="37">33</emphasis>
middle leg
<emphasis bold="true" pageId="0" pageNumber="37">34</emphasis>
hind leg.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" italics="true" pageId="0" pageNumber="37">Abdomen:</emphasis>
Tergites I and X brown, tergites II-IX brown with two triangle-like white markings on anterior half (Fig.
<figureCitation captionStart="Figures 2629" captionStartId="F5" captionText="Figures 26 - 29. Ameletus daliensis Tong, sp. nov. 26 male imago 27 male imago (dorsal view) 28 head of male sub-imago 29 egg (SEM)." figureDoi="10.3897/zookeys.1021.59927.figures26-29" httpUri="https://binary.pensoft.net/fig/515213" pageId="0" pageNumber="37">27</figureCitation>
). Sternites II-VIII pale, each with ganglionic marking medially. Cerci dark brown.
</paragraph>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" italics="true" pageId="0" pageNumber="37">Genitals:</emphasis>
Styliger white with brown markings laterally (Fig.
<figureCitation captionStart="Figures 3539" captionStartId="F7" captionText="Figures 35 - 39. Male genitals of Ameletus daliensis Tong, sp. nov. 35 terminal abdominal sternites 36 penis lobes 37 penis lobes (ventral view) 38 penis lobes (dorsal view) 39 penis lobes (lateral view)." figureDoi="10.3897/zookeys.1021.59927.figures35-39" httpUri="https://binary.pensoft.net/fig/515215" pageId="0" pageNumber="37">35</figureCitation>
); forceps dark brown, terminal segment paler (Fig.
<figureCitation captionStart="Figures 3539" captionStartId="F7" captionText="Figures 35 - 39. Male genitals of Ameletus daliensis Tong, sp. nov. 35 terminal abdominal sternites 36 penis lobes 37 penis lobes (ventral view) 38 penis lobes (dorsal view) 39 penis lobes (lateral view)." figureDoi="10.3897/zookeys.1021.59927.figures35-39" httpUri="https://binary.pensoft.net/fig/515215" pageId="0" pageNumber="37">35</figureCitation>
); penis lateral lobes with spinules, apices of lobes round and slightly bent inwardly; ventral plates absent (Figs
<figureCitation captionStart="Figures 3539" captionStartId="F7" captionText="Figures 35 - 39. Male genitals of Ameletus daliensis Tong, sp. nov. 35 terminal abdominal sternites 36 penis lobes 37 penis lobes (ventral view) 38 penis lobes (dorsal view) 39 penis lobes (lateral view)." figureDoi="10.3897/zookeys.1021.59927.figures35-39" httpUri="https://binary.pensoft.net/fig/515215" pageId="0" pageNumber="37">36-39</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1021.59927.figures35-39" httpUri="https://binary.pensoft.net/fig/515215" pageId="0" pageNumber="37" start="Figures 3539" startId="F7">
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">Figures 35-39.</emphasis>
Male genitals of
<taxonomicName authorityName="Tong" authorityYear="2021" class="Insecta" family="Ameletidae" genus="Ameletus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ameletus daliensis" order="Ephemeroptera" pageId="0" pageNumber="37" phylum="Arthropoda" rank="species" species="daliensis">
<emphasis italics="true" pageId="0" pageNumber="37">Ameletus daliensis</emphasis>
</taxonomicName>
Tong, sp. nov.
<emphasis bold="true" pageId="0" pageNumber="37">35</emphasis>
terminal abdominal sternites
<emphasis bold="true" pageId="0" pageNumber="37">36</emphasis>
penis lobes
<emphasis bold="true" pageId="0" pageNumber="37">37</emphasis>
penis lobes (ventral view)
<emphasis bold="true" pageId="0" pageNumber="37">38</emphasis>
penis lobes (dorsal view)
<emphasis bold="true" pageId="0" pageNumber="37">39</emphasis>
penis lobes (lateral view).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" italics="true" pageId="0" pageNumber="37">Female subimago</emphasis>
(in alcohol). Length (mm): Body 13.5; forewings 13.5; cerci 11. Compound eyes dark grey. Lateral view of head, the labial and maxillary palpi present and clearly visible (Fig.
<figureCitation captionStart="Figures 2629" captionStartId="F5" captionText="Figures 26 - 29. Ameletus daliensis Tong, sp. nov. 26 male imago 27 male imago (dorsal view) 28 head of male sub-imago 29 egg (SEM)." figureDoi="10.3897/zookeys.1021.59927.figures26-29" httpUri="https://binary.pensoft.net/fig/515213" pageId="0" pageNumber="37">28</figureCitation>
). Pronotum pale. Medioscutum and median longitudinal suture pale to light brown; submedioscutum and sublateroscutum brown. Wings semi-transparent, all cross-veins bordered around by dark brown. Abdominal tergite I pale with brown markings laterally and medially, colour pattern of other tergites similar to those of male; sternites II-VIII pale, each with blackish ganglionic marking medially, subgenital plate brown with deep V-shaped cleft.
</paragraph>
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">
<emphasis italics="true" pageId="0" pageNumber="37">Eggs</emphasis>
.
</emphasis>
Generally long ellipsoid shape with length 180-205
<normalizedToken originalValue="μm">μm</normalizedToken>
and width 100-115
<normalizedToken originalValue="μm">μm</normalizedToken>
(Fig.
<figureCitation captionStart="Figures 2629" captionStartId="F5" captionText="Figures 26 - 29. Ameletus daliensis Tong, sp. nov. 26 male imago 27 male imago (dorsal view) 28 head of male sub-imago 29 egg (SEM)." figureDoi="10.3897/zookeys.1021.59927.figures26-29" httpUri="https://binary.pensoft.net/fig/515213" pageId="0" pageNumber="37">29</figureCitation>
). The chorionic surface is covered by large-mesh polygonal cells, each cell with a small protuberance in the middle; large prominent round knobs exist on one pole only.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="37" type="etymology">
<paragraph pageId="0" pageNumber="37">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="37">
<materialsCitation ID-GBIF-Occurrence="3063643303" collectingDate="2021-01-01" collectingDateMax="2021-12-31" collectingDateMin="2021-01-01" country="China" location="Dali City" specimenCount="1" stateProvince="Yunnan">
The specific epithet is named after the
<typeStatus>type</typeStatus>
locality,
<location LSID="urn:lsid:plazi:treatment:1264241EA2BA5B10917F639A1187BD60:F6271874BF277BBA436B9D8E2E4C78F2" country="China" name="Dali City" stateProvince="Yunnan">Dali City</location>
,
<collectingRegion country="China" name="Yunnan">Yunnan Province</collectingRegion>
,
<collectingCountry name="China">China</collectingCountry>
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="37" type="distribution">
<paragraph pageId="0" pageNumber="37">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="37">
<collectingCountry name="China">China</collectingCountry>
(
<collectingRegion country="China" name="Yunnan">Yunnan</collectingRegion>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="37" type="biology_ecology">
<paragraph pageId="0" pageNumber="37">Biology.</paragraph>
<paragraph pageId="0" pageNumber="37">
Larvae of this new species prefer to live in pools or slow currents with boulder and cobble substrate in very clear small streams. At one representative location (Heilong Stream, Mt. Cangshan) in May, the average water temperature was 14.6 °C, pH was 6.9 and DO (mg/l) was 7.6. Mature larvae with black wing-pads could be collected from early May through to mid-July, which suggests that the emergence period of the alate stage occurs from early May to late July, from which we infer that
<taxonomicName lsidName="A. daliensis" pageId="0" pageNumber="37" rank="species" species="daliensis">
<emphasis italics="true" pageId="0" pageNumber="37">A. daliensis</emphasis>
</taxonomicName>
Tong, sp. nov. is a univoltine species in Dali,
<collectingRegion country="China" name="Yunnan">Yunnan</collectingRegion>
. Before emergence, the mature larvae crawled to stones protruding from the water, half submerged and moulted to sub-imago (Fig.
<figureCitation captionStart="Figures 4042" captionStartId="F8" captionText="Figures 40 - 42. 40 rearing cage in the field 41 rearing cage 42 habitat of Ameletus daliensis Tong, sp. nov." figureDoi="10.3897/zookeys.1021.59927.figures40-42" httpUri="https://binary.pensoft.net/fig/515216" pageId="0" pageNumber="37">42</figureCitation>
). The sub-imagos usually emerged on a warm sunny daytime and were rarely collected by light-trap in the evening.
</paragraph>
<caption doi="10.3897/zookeys.1021.59927.figures40-42" httpUri="https://binary.pensoft.net/fig/515216" pageId="0" pageNumber="37" start="Figures 4042" startId="F8">
<paragraph pageId="0" pageNumber="37">
<emphasis bold="true" pageId="0" pageNumber="37">Figures 40-42.</emphasis>
<emphasis bold="true" pageId="0" pageNumber="37">40</emphasis>
rearing cage in the field
<emphasis bold="true" pageId="0" pageNumber="37">41</emphasis>
rearing cage
<emphasis bold="true" pageId="0" pageNumber="37">42</emphasis>
habitat of
<taxonomicName authorityName="Tong" authorityYear="2021" class="Insecta" family="Ameletidae" genus="Ameletus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ameletus daliensis" order="Ephemeroptera" pageId="0" pageNumber="37" phylum="Arthropoda" rank="species" species="daliensis">
<emphasis italics="true" pageId="0" pageNumber="37">Ameletus daliensis</emphasis>
</taxonomicName>
Tong, sp. nov.
</paragraph>
</caption>
</subSubSection>
</treatment>
</document>