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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1130.91039" ID-Pensoft-Pub="1313-2970-1130-191" ID-Pensoft-UUID="0C932FD767A75126ABD181B8DD72B45F" ID-ZooBank="F74E572A1B7B47269B3DE60DF51C1C78" ModsDocID="1313-2970-1130-191" checkinTime="1669095654106" checkinUser="pensoft" docAuthor="Auychinda, Chonlakran, Sartori, Michel &amp; Boonsoong, Boonsatien" docDate="2022" docId="1929A9DE1DE75630AD3C8BD1F5315C68" docLanguage="en" docName="ZooKeys 1130: 191-204" docOrigin="ZooKeys 1130" docPubDate="2022-11-21" docSource="http://dx.doi.org/10.3897/zookeys.1130.91039" docTitle="Cincticostella ebura Auychinda &amp; Sartori &amp; Boonsoong 2022, sp. nov." docType="treatment" docUuid="99170F17-D407-4F9B-AF3C-72E18192A2A4" docUuidSource="ZooBank" docVersion="1" id="0C932FD767A75126ABD181B8DD72B45F" lastPageNumber="191" masterDocId="0C932FD767A75126ABD181B8DD72B45F" masterDocTitle="Cincticostella ebura sp. nov., a new species of mayfly (Ephemeroptera, Ephemerellidae) from Thailand" masterLastPageNumber="204" masterPageNumber="191" pageNumber="191" updateTime="1669095654106" updateUser="pensoft">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Cincticostella ebura sp. nov., a new species of mayfly (Ephemeroptera, Ephemerellidae) from Thailand</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Auychinda, Chonlakran</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-3282-3506</mods:nameIdentifier>
<mods:affiliation>Department of Biology, Faculty of Science, Silpakorn University, Nakhon Pathom, Nakhon Pathom Province, 73000, Thailand</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Sartori, Michel</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-3397-3397</mods:nameIdentifier>
<mods:affiliation>Museum of Zoology, Palais de Rumine, Place Riponne 6, CH- 1005 Lausanne, Switzerland &amp; Department of Ecology and Evolution, Lausanne University, CH- 101 Lausanne, Switzerland</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Boonsoong, Boonsatien</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-8166-0021</mods:nameIdentifier>
<mods:affiliation>Animal Systematics and Ecology Specialty Research Unit (ASESRU), Department of Zoology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand &amp; Biodiversity Center Kasetsart University (BDCKU), Bangkok 10900, Thailand</mods:affiliation>
<mods:nameIdentifier type="email">fscibtb@ku.ac.th</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>2022</mods:date>
<mods:detail type="pubDate">
<mods:number>2022-11-21</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>1130</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>191</mods:start>
<mods:end>204</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.1130.91039</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1130.91039</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-1130-191</mods:identifier>
<mods:identifier type="ZooBank">F74E572A1B7B47269B3DE60DF51C1C78</mods:identifier>
<mods:identifier type="Pensoft-UUID">0C932FD767A75126ABD181B8DD72B45F</mods:identifier>
</mods:mods>
<treatment LSID="urn:lsid:zoobank.org:act:99170F17-D407-4F9B-AF3C-72E18192A2A4" httpUri="http://treatment.plazi.org/id/1929A9DE1DE75630AD3C8BD1F5315C68" lastPageNumber="191" pageId="0" pageNumber="191">
<subSubSection pageId="0" pageNumber="191" type="nomenclature">
<paragraph pageId="0" pageNumber="191">
<taxonomicName LSID="https://zoobank.org/99170F17-D407-4F9B-AF3C-72E18192A2A4" authority="Auychinda &amp; Sartori &amp; Boonsoong, 2022" authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura" status="sp. nov.">Cincticostella ebura</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="191">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="191" type="description">
<paragraph pageId="0" pageNumber="191">
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Cincticostella ebura sp. nov. a larval habitus in dorsal view b in lateral view and c in ventral view. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1130.91039.figure1" httpUri="https://binary.pensoft.net/fig/772182" pageId="0" pageNumber="191">Figs 1</figureCitation>
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">, 2</figureCitation>
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Cincticostella ebura sp. nov. a prosternum and mesosternum b pairs of tubercles (arrow) on mesothorax of early stage; c-f gills of segment III-VI g ventral lamella of gill of segment VII h ventral lamella of gill of segment VI. Scale bars: 0.2 mm." figureDoi="10.3897/zookeys.1130.91039.figure3" httpUri="https://binary.pensoft.net/fig/772184" pageId="0" pageNumber="191">, 3</figureCitation>
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">, 4</figureCitation>
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Cincticostella ebura sp. nov. a an overview of egg b chorionic surface c chorionic surface with micropyles d chorionic surface with KCT. Scale bars: 0.02 mm (a); 0.01 mm (b-d)." figureDoi="10.3897/zookeys.1130.91039.figure5" httpUri="https://binary.pensoft.net/fig/772186" pageId="0" pageNumber="191">, 5</figureCitation>
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. a The Mae Nam Wa stream, Bo Kluea district, Nan Province b microhabitat of the larvae of Cincticostella ebura sp. nov. c Cincticostella ebura sp. nov. larva (living)." figureDoi="10.3897/zookeys.1130.91039.figure6" httpUri="https://binary.pensoft.net/fig/772187" pageId="0" pageNumber="191">, 6c</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="191" type="materials_examined">
<paragraph pageId="0" pageNumber="191">Material examined.</paragraph>
<paragraph pageId="0" pageNumber="191">
<materialsCitation collectingDate="2019-11-26" collectorName="C. Auychinda" country="Thailand" county="Male" elevation="848" latitude="19.272943" location="Mae Nam Wa" longLatPrecision="1" longitude="101.18005" municipality="Bo Kluea District" specimenCount="1" stateProvince="Nan Province" typeStatus="Holotype">
<emphasis bold="true" italics="true" pageId="0" pageNumber="191">
<typeStatus>Holotype</typeStatus>
</emphasis>
:
<collectingCounty>Male</collectingCounty>
mature larva in ethanol,
<collectingCountry name="Thailand">Thailand</collectingCountry>
,
<collectingRegion country="Thailand" name="Nan">Nan Province</collectingRegion>
,
<collectingMunicipality>Bo Kluea District</collectingMunicipality>
,
<location LSID="urn:lsid:plazi:treatment:1929A9DE1DE75630AD3C8BD1F5315C68:251BF7F7EA3C5527E37DE64948964604" country="Thailand" county="Male" latitude="19.272943" longLatPrecision="1" longitude="101.18005" municipality="Bo Kluea District" name="Mae Nam Wa" stateProvince="Nan Province">Mae Nam Wa</location>
stream,
<geoCoordinate degrees="19" direction="north" minutes="16" orientation="latitude" precision="1" seconds="22.6" value="19.272943">19°16'22.6&quot;N</geoCoordinate>
,
<geoCoordinate degrees="101" direction="east" minutes="10" orientation="longitude" precision="1" seconds="48.2" value="101.18005">101°10'48.2&quot;E</geoCoordinate>
,
<quantity metricMagnitude="2" metricUnit="m" metricValue="8.48" unit="m" value="848.0">
<elevation metricMagnitude="2" metricUnit="m" metricValue="8.48" unit="m" value="848.0">848 m</elevation>
</quantity>
,
<collectingDate value="2019-11-26">26.XI.2019</collectingDate>
,
<collectorName>C. Auychinda</collectorName>
leg. [
<emphasis bold="true" pageId="0" pageNumber="191">ZMKU</emphasis>
]
</materialsCitation>
.
<materialsCitation collectingDate="2022-01-01" collectingDateMax="2022-12-31" collectingDateMin="2022-01-01" collectorName="C. Auychinda" country="Thailand" county="Male" elevation="848" latitude="19.272943" location="Mae Nam Wa" longLatPrecision="1" longitude="101.18005" municipality="Bo Kluea District" specimenCount="30" specimenCount-larva="30" stateProvince="Nan" typeStatus="Paratypes">
<emphasis bold="true" italics="true" pageId="0" pageNumber="191">
<typeStatus>Paratypes</typeStatus>
</emphasis>
:
<specimenCount type="larva">30 larvae</specimenCount>
in ethanol, one on slide, same data as holotype [
<emphasis bold="true" pageId="0" pageNumber="191">ZMKU</emphasis>
]
</materialsCitation>
;
<materialsCitation collectingDate="2022-01-01" collectingDateMax="2022-12-31" collectingDateMin="2022-01-01" collectorName="C. Auychinda" country="Thailand" county="Male" elevation="848" latitude="19.272943" location="Mae Nam Wa" longLatPrecision="1" longitude="101.18005" municipality="Bo Kluea District" specimenCount="4" specimenCount-larva="4" stateProvince="Nan" typeStatus="paratype">
<specimenCount type="larva">4 larvae</specimenCount>
in ethanol, same data as holotype [
<emphasis bold="true" pageId="0" pageNumber="191">MZL</emphasis>
GBIFCH00977588]
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="191" type="description">
<paragraph pageId="0" pageNumber="191">Description.</paragraph>
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">Mature larva</emphasis>
(in alcohol, Fig.
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Cincticostella ebura sp. nov. a larval habitus in dorsal view b in lateral view and c in ventral view. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1130.91039.figure1" httpUri="https://binary.pensoft.net/fig/772182" pageId="0" pageNumber="191">1</figureCitation>
; living, Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. a The Mae Nam Wa stream, Bo Kluea district, Nan Province b microhabitat of the larvae of Cincticostella ebura sp. nov. c Cincticostella ebura sp. nov. larva (living)." figureDoi="10.3897/zookeys.1130.91039.figure6" httpUri="https://binary.pensoft.net/fig/772187" pageId="0" pageNumber="191">6c</figureCitation>
). Body length (without cerci) 5.5-6.0 mm; cerci 6.0-8.5 mm; body brownish-black with a conspicuous dorsal median pale line from the head to tergum X (Figs
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Cincticostella ebura sp. nov. a larval habitus in dorsal view b in lateral view and c in ventral view. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1130.91039.figure1" httpUri="https://binary.pensoft.net/fig/772182" pageId="0" pageNumber="191">1a</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. a The Mae Nam Wa stream, Bo Kluea district, Nan Province b microhabitat of the larvae of Cincticostella ebura sp. nov. c Cincticostella ebura sp. nov. larva (living)." figureDoi="10.3897/zookeys.1130.91039.figure6" httpUri="https://binary.pensoft.net/fig/772187" pageId="0" pageNumber="191">6c</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1130.91039.figure1" httpUri="https://binary.pensoft.net/fig/772182" pageId="0" pageNumber="191" start="Figure 1" startId="F1">
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">Figure 1.</emphasis>
<taxonomicName authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella ebura</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="191">a</emphasis>
larval habitus in dorsal view
<emphasis bold="true" pageId="0" pageNumber="191">b</emphasis>
in lateral view and
<emphasis bold="true" pageId="0" pageNumber="191">c</emphasis>
in ventral view. Scale bars: 1 mm.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">
<emphasis italics="true" pageId="0" pageNumber="191">Head</emphasis>
.
</emphasis>
Black without tubercles, prominent bright ocelli; antennae three times longer than head length. Labrum densely covered with long fine setae, apicolateral angles rounded; apicomedially with deep emargination; ratio of emargination length to maximum labrum length = 1: 4.7 (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">2a</figureCitation>
). Mandibles stout with numerous, hair-like setae on 2/3 proximal of dorsal and lateral surfaces (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">2b, c</figureCitation>
). Left mandible: outer incisor composed of three acute teeth; inner incisor with one main stout and one inner vestigial tooth; prostheca with a bunch of hair-like setae on the inner side (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">2b</figureCitation>
). Right mandible: outer incisor composed of two pointed teeth; inner incisor composed of two apically pointed teeth, orientated perpendicularly to the outer incisor; prostheca consisting of numerous hair-like setae (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">2c</figureCitation>
) Hypopharynx: lingual surface covered with short setae, most abundant in apical part; superlinguae with numerous hair-like setae, apices rounded, posterolateral part concave (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">2d</figureCitation>
). Labium with narrow elliptical glossae, almost four times longer than broad and covered with numerous short fine setae; paraglossae broad, semicircular, with surfaces covered with numerous simple setae. Labial palp three-segmented; segments I and II stout and equal in length, outer margin covered with hair-like setae, segment III spine-like in shape, 2.5 times longer than broad at the base (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">2e</figureCitation>
). Maxillae slender; maxillary palpi long (0.46 mm), covered with tiny setae and three-segmented, length ratio from basal to apical segments = 4: 4: 1 (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">2f</figureCitation>
), apex of segment II with long hair-like setae, segment III cone-shaped and with tiny short setae apically (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">2h</figureCitation>
); apex of maxilla widened, surface with numerous long, hair-like setae; maxillary canine reduced to a small denticulated blade and less than half as long as crown, inner margin of galea-lacinia with 3-4 rows of simple setae (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Cincticostella ebura sp. nov. a labrum b left mandible c right mandible d hypopharynx e labium f maxilla g galea-lacinia h segment III of maxillary palp. Scale bars: 0.2 mm (a-f); 0.05 mm (g); 0.035 mm (h)." figureDoi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191">2f, g</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1130.91039.figure2" httpUri="https://binary.pensoft.net/fig/772183" pageId="0" pageNumber="191" start="Figure 2" startId="F2">
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">Figure 2.</emphasis>
<taxonomicName authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella ebura</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="191">a</emphasis>
labrum
<emphasis bold="true" pageId="0" pageNumber="191">b</emphasis>
left mandible
<emphasis bold="true" pageId="0" pageNumber="191">c</emphasis>
right mandible
<emphasis bold="true" pageId="0" pageNumber="191">d</emphasis>
hypopharynx
<emphasis bold="true" pageId="0" pageNumber="191">e</emphasis>
labium
<emphasis bold="true" pageId="0" pageNumber="191">f</emphasis>
maxilla
<emphasis bold="true" pageId="0" pageNumber="191">g</emphasis>
galea-lacinia
<emphasis bold="true" pageId="0" pageNumber="191">h</emphasis>
segment III of maxillary palp. Scale bars: 0.2 mm (
<emphasis bold="true" pageId="0" pageNumber="191">a-f</emphasis>
); 0.05 mm (
<emphasis bold="true" pageId="0" pageNumber="191">g</emphasis>
); 0.035 mm (
<emphasis bold="true" pageId="0" pageNumber="191">h</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">
<emphasis italics="true" pageId="0" pageNumber="191">Thorax</emphasis>
.
</emphasis>
Black with distinct white median line. Pronotum rectangular without clear anterolateral projections. Mesonotum with rounded anterolateral projections, outer margins not notched (Fig.
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Cincticostella ebura sp. nov. a larval habitus in dorsal view b in lateral view and c in ventral view. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1130.91039.figure1" httpUri="https://binary.pensoft.net/fig/772182" pageId="0" pageNumber="191">1a</figureCitation>
); mounted on slide, this character looks more angular (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">4a</figureCitation>
); a pair of sub-median tubercles in the middle, a single posterior prominent median tubercle (Fig.
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Cincticostella ebura sp. nov. a larval habitus in dorsal view b in lateral view and c in ventral view. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1130.91039.figure1" httpUri="https://binary.pensoft.net/fig/772182" pageId="0" pageNumber="191">1b</figureCitation>
), posteriorly between fore wing pads with a pair of well-developed projections, angular with deep cleft (Figs
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Cincticostella ebura sp. nov. a larval habitus in dorsal view b in lateral view and c in ventral view. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1130.91039.figure1" httpUri="https://binary.pensoft.net/fig/772182" pageId="0" pageNumber="191">1a</figureCitation>
,
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">4a-b</figureCitation>
). Prothoracic sternum trapezoidal, mesothoracic basisternum rectangular, mesothoracic furcastemum broader than basisternum, oval transversely (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Cincticostella ebura sp. nov. a prosternum and mesosternum b pairs of tubercles (arrow) on mesothorax of early stage; c-f gills of segment III-VI g ventral lamella of gill of segment VII h ventral lamella of gill of segment VI. Scale bars: 0.2 mm." figureDoi="10.3897/zookeys.1130.91039.figure3" httpUri="https://binary.pensoft.net/fig/772184" pageId="0" pageNumber="191">3a</figureCitation>
). Forefemora moderately dilated, ventral margin with fine setae, dorsal margin with spatulate setae most abundant in distal part, distal part of the dorsal surface with a transversal discontinuous row of 6-8 spatulate setae perpendicular to the femur (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">4 c, i, j</figureCitation>
). Midfemora moderately expanded, dorsal margin smooth and with a row of short stout setae abundant in distal part (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">4e</figureCitation>
). Hind femora moderately expanded, longer than mid femora, dorsal margin smooth, with a row of short stout setae from median to distal part (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">4f</figureCitation>
). All claws similar, strongly hooked without apical setae, each with an acute basal and subapical tooth (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">4d</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1130.91039.figure3" httpUri="https://binary.pensoft.net/fig/772184" pageId="0" pageNumber="191" start="Figure 3" startId="F3">
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">Figure 3.</emphasis>
<taxonomicName authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella ebura</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="191">a</emphasis>
prosternum and mesosternum
<emphasis bold="true" pageId="0" pageNumber="191">b</emphasis>
pairs of tubercles (arrow) on mesothorax of early stage;
<emphasis bold="true" pageId="0" pageNumber="191">c-f</emphasis>
gills of segment III-VI
<emphasis bold="true" pageId="0" pageNumber="191">g</emphasis>
ventral lamella of gill of segment VII
<emphasis bold="true" pageId="0" pageNumber="191">h</emphasis>
ventral lamella of gill of segment VI. Scale bars: 0.2 mm.
</paragraph>
</caption>
<caption doi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191" start="Figure 4" startId="F4">
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">Figure 4.</emphasis>
<taxonomicName authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella ebura</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="191">a</emphasis>
thorax in dorsal view, a pair of tubercles was indicated by arrows
<emphasis bold="true" pageId="0" pageNumber="191">b</emphasis>
posterior projection of mesonotum
<emphasis bold="true" pageId="0" pageNumber="191">c</emphasis>
foreleg
<emphasis bold="true" pageId="0" pageNumber="191">d</emphasis>
foretarsal claw
<emphasis bold="true" pageId="0" pageNumber="191">e</emphasis>
mid-femur
<emphasis bold="true" pageId="0" pageNumber="191">f</emphasis>
hind-femur
<emphasis bold="true" pageId="0" pageNumber="191">g</emphasis>
abdominal terga V-VII
<emphasis bold="true" pageId="0" pageNumber="191">h</emphasis>
abdominal terga VIII-X
<emphasis bold="true" pageId="0" pageNumber="191">i, j</emphasis>
setae on apically dorsal forefemoral surface
<emphasis bold="true" pageId="0" pageNumber="191">k</emphasis>
setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (
<emphasis bold="true" pageId="0" pageNumber="191">a, b, c, e, f, g, h</emphasis>
); 0.05 mm (
<emphasis bold="true" pageId="0" pageNumber="191">d, j</emphasis>
); 0.01 mm (
<emphasis bold="true" pageId="0" pageNumber="191">k</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">
<emphasis italics="true" pageId="0" pageNumber="191">Abdomen</emphasis>
.
</emphasis>
Terga I-X each with a pair of posteromedian projections, well developed into strong tubercles of terga IV-VIII (Figs
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Cincticostella ebura sp. nov. a larval habitus in dorsal view b in lateral view and c in ventral view. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1130.91039.figure1" httpUri="https://binary.pensoft.net/fig/772182" pageId="0" pageNumber="191">1b</figureCitation>
,
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">4g</figureCitation>
); posterolateral projections of tergum VIII less developed (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">4h</figureCitation>
); posterior margins of each tergum with bifurcate stout setae (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Cincticostella ebura sp. nov. a thorax in dorsal view, a pair of tubercles was indicated by arrows b posterior projection of mesonotum c foreleg d foretarsal claw e mid-femur f hind-femur g abdominal terga V-VII h abdominal terga VIII-X i, j setae on apically dorsal forefemoral surface k setae on posterior margin of abdominal terga. Scale bars: 0.2 mm (a, b, c, e, f, g, h); 0.05 mm (d, j); 0.01 mm (k)." figureDoi="10.3897/zookeys.1130.91039.figure4" httpUri="https://binary.pensoft.net/fig/772185" pageId="0" pageNumber="191">4k</figureCitation>
). Gills present on segments III-VII (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Cincticostella ebura sp. nov. a prosternum and mesosternum b pairs of tubercles (arrow) on mesothorax of early stage; c-f gills of segment III-VI g ventral lamella of gill of segment VII h ventral lamella of gill of segment VI. Scale bars: 0.2 mm." figureDoi="10.3897/zookeys.1130.91039.figure3" httpUri="https://binary.pensoft.net/fig/772184" pageId="0" pageNumber="191">3c-h</figureCitation>
), all gills consistent with the diagnostic character of the genus
<taxonomicName authorityName="Allen" authorityYear="1971" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella</emphasis>
</taxonomicName>
: gill III without medial transverse band of weakened membrane; ventral lamella of gills III-V bifurcated (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Cincticostella ebura sp. nov. a prosternum and mesosternum b pairs of tubercles (arrow) on mesothorax of early stage; c-f gills of segment III-VI g ventral lamella of gill of segment VII h ventral lamella of gill of segment VI. Scale bars: 0.2 mm." figureDoi="10.3897/zookeys.1130.91039.figure3" httpUri="https://binary.pensoft.net/fig/772184" pageId="0" pageNumber="191">3c-e</figureCitation>
), gill VI-VII non-bifurcate with marginal processes (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Cincticostella ebura sp. nov. a prosternum and mesosternum b pairs of tubercles (arrow) on mesothorax of early stage; c-f gills of segment III-VI g ventral lamella of gill of segment VII h ventral lamella of gill of segment VI. Scale bars: 0.2 mm." figureDoi="10.3897/zookeys.1130.91039.figure3" httpUri="https://binary.pensoft.net/fig/772184" pageId="0" pageNumber="191">3f-h</figureCitation>
). Caudal filaments with whorls of dense setae on each segment.
</paragraph>
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">
<emphasis italics="true" pageId="0" pageNumber="191">Eggs</emphasis>
.
</emphasis>
Dissected from mature larva (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Cincticostella ebura sp. nov. a an overview of egg b chorionic surface c chorionic surface with micropyles d chorionic surface with KCT. Scale bars: 0.02 mm (a); 0.01 mm (b-d)." figureDoi="10.3897/zookeys.1130.91039.figure5" httpUri="https://binary.pensoft.net/fig/772186" pageId="0" pageNumber="191">5</figureCitation>
). Ovoid, length ca 125
<normalizedToken originalValue="µm">µm</normalizedToken>
, width ca 110
<normalizedToken originalValue="µm">µm</normalizedToken>
; one pole covered with a dome-shaped polar cap, chorionic surface reticulated, almost hexagonal in formation, with a central spot (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Cincticostella ebura sp. nov. a an overview of egg b chorionic surface c chorionic surface with micropyles d chorionic surface with KCT. Scale bars: 0.02 mm (a); 0.01 mm (b-d)." figureDoi="10.3897/zookeys.1130.91039.figure5" httpUri="https://binary.pensoft.net/fig/772186" pageId="0" pageNumber="191">5a, b</figureCitation>
). Equator with 4-6 micropyles, sperm guide circular and smooth (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Cincticostella ebura sp. nov. a an overview of egg b chorionic surface c chorionic surface with micropyles d chorionic surface with KCT. Scale bars: 0.02 mm (a); 0.01 mm (b-d)." figureDoi="10.3897/zookeys.1130.91039.figure5" httpUri="https://binary.pensoft.net/fig/772186" pageId="0" pageNumber="191">5c</figureCitation>
). Rounded knob terminated coiled threads (KCT) especially abundant at the part opposite the polar cap (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Cincticostella ebura sp. nov. a an overview of egg b chorionic surface c chorionic surface with micropyles d chorionic surface with KCT. Scale bars: 0.02 mm (a); 0.01 mm (b-d)." figureDoi="10.3897/zookeys.1130.91039.figure5" httpUri="https://binary.pensoft.net/fig/772186" pageId="0" pageNumber="191">5d</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1130.91039.figure5" httpUri="https://binary.pensoft.net/fig/772186" pageId="0" pageNumber="191" start="Figure 5" startId="F5">
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">Figure 5.</emphasis>
<taxonomicName authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella ebura</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="191">a</emphasis>
an overview of egg
<emphasis bold="true" pageId="0" pageNumber="191">b</emphasis>
chorionic surface
<emphasis bold="true" pageId="0" pageNumber="191">c</emphasis>
chorionic surface with micropyles
<emphasis bold="true" pageId="0" pageNumber="191">d</emphasis>
chorionic surface with KCT. Scale bars: 0.02 mm (
<emphasis bold="true" pageId="0" pageNumber="191">a</emphasis>
); 0.01 mm (
<emphasis bold="true" pageId="0" pageNumber="191">b-d</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">Adults.</emphasis>
Unknown.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="191" type="remarks">
<paragraph pageId="0" pageNumber="191">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="191">
The pair of sub-median tubercles in the middle of mesonotum of early stages is prominent and variable in number, 2 or 4 tubercles (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Cincticostella ebura sp. nov. a prosternum and mesosternum b pairs of tubercles (arrow) on mesothorax of early stage; c-f gills of segment III-VI g ventral lamella of gill of segment VII h ventral lamella of gill of segment VI. Scale bars: 0.2 mm." figureDoi="10.3897/zookeys.1130.91039.figure3" httpUri="https://binary.pensoft.net/fig/772184" pageId="0" pageNumber="191">3b</figureCitation>
) which is similar to other
<taxonomicName authorityName="Klapalek" authorityYear="1909" class="Insecta" family="Ephemerellidae" kingdom="Animalia" lsidName="" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="family">Ephemerellidae</taxonomicName>
such as
<taxonomicName baseAuthorityName="Allen" baseAuthorityYear="1971" class="Insecta" family="Ephemerellidae" genus="Notacanthella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notacanthella commodema" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="commodema">
<emphasis italics="true" pageId="0" pageNumber="191">Notacanthella commodema</emphasis>
</taxonomicName>
(Allen, 1971) in which the tubercle numbers reduce and are more flattened in later stages (
<bibRefCitation author="Auychinda, C" journalOrPublisher="Zootaxa" pageId="0" pageNumber="191" pagination="414 - 424" refId="B6" refString="Auychinda, C, Sartori, M, Boonsoong, B, 2020b. Review of Notacanthella Jacobus amp; McCafferty (2008) (Ephemeroptera: Ephemerellidae) in Thailand, with the redescription of Notacanthella commodema (Allen, 1971). Zootaxa 4731: 414 - 424" title="Review of Notacanthella Jacobus amp; McCafferty (2008) (Ephemeroptera: Ephemerellidae) in Thailand, with the redescription of Notacanthella commodema (Allen, 1971)." volume="4731" year="2020 b">Auychinda et al. 2020b</bibRefCitation>
). On the contrary, the posterior median tubercle is distinct in all larval stages of the new species. Although,
<taxonomicName lsidName="C. funki" pageId="0" pageNumber="191" rank="species" species="funki">
<emphasis italics="true" pageId="0" pageNumber="191">C. funki</emphasis>
</taxonomicName>
has no distinct prominent tubercle on their posterior median mesothorax in later stages, this tubercle is distinct in the small larval stages (A. Martynov, pers. comm.)
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="191" type="diagnosis">
<paragraph pageId="0" pageNumber="191">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="191">
The larva of
<taxonomicName authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella ebura</emphasis>
</taxonomicName>
sp. nov. has a well-marked white median line along its body that can be used to separate it from other
<taxonomicName authorityName="Allen" authorityYear="1971" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella</emphasis>
</taxonomicName>
species. However, this pattern is also present in
<taxonomicName lsidName="C. nigra" pageId="0" pageNumber="191" rank="species" species="nigra">
<emphasis italics="true" pageId="0" pageNumber="191">C. nigra</emphasis>
</taxonomicName>
(
<normalizedToken originalValue="Uéno">Ueno</normalizedToken>
, 1928) and
<taxonomicName lsidName="C. funki" pageId="0" pageNumber="191" rank="species" species="funki">
<emphasis italics="true" pageId="0" pageNumber="191">C. funki</emphasis>
</taxonomicName>
Martynov, Selvakumar, Palatov &amp; Vasanth, 2021, and the body shape is quite similar (
<bibRefCitation author="Ueno, M" journalOrPublisher="Memoirs of the College of Science, Kyoto Imperial University, Series B" pageId="0" pageNumber="191" pagination="19 - 63" refId="B20" refString="Ueno, M, 1928. Some Japanese mayfly nymphs. Memoirs of the College of Science, Kyoto Imperial University, Series B 6: 19 - 63" title="Some Japanese mayfly nymphs." volume="6" year="1928">
<normalizedToken originalValue="Uéno">Ueno</normalizedToken>
1928
</bibRefCitation>
;
<bibRefCitation DOI="https://doi.org/10.12782/specdiv.8.311" author="Ishiwata, S" journalOrPublisher="Species Diversity" pageId="0" pageNumber="191" pagination="311 - 346" refId="B9" refString="Ishiwata, S, 2003. A Revision of the genus Cincticostella (Insecta: Ephemeroptera: Ephemerellidae) from Japan. Species Diversity 8 (4): 311 - 346, DOI: https://doi.org/10.12782/specdiv.8.311" title="A Revision of the genus Cincticostella (Insecta: Ephemeroptera: Ephemerellidae) from Japan." url="https://doi.org/10.12782/specdiv.8.311" volume="8" year="2003">Ishiwata 2003</bibRefCitation>
;
<bibRefCitation DOI="https://doi.org/10.3897/zookeys.1040.64280" author="Martynov, AV" journalOrPublisher="ZooKeys" pageId="0" pageNumber="191" pagination="123 - 166" refId="B15" refString="Martynov, AV, Selvakumar, C, Palatov, DM, Subramanian, KA, Sivaramakrishnan, KG, Vasanth, M, Jacobus, LM, 2021. Overview of Indian and Nepali representatives of the Cincticostella nigra (Ueno, 1928) complex (Ephemeroptera, Ephemerellidae), with discussion about Cincticostella Allen, 1971 species complexes. ZooKeys 1040: 123 - 166, DOI: https://doi.org/10.3897/zookeys.1040.64280" title="Overview of Indian and Nepali representatives of the Cincticostella nigra (Ueno, 1928) complex (Ephemeroptera, Ephemerellidae), with discussion about Cincticostella Allen, 1971 species complexes." url="https://doi.org/10.3897/zookeys.1040.64280" volume="1040" year="2021">Martynov et al. 2021</bibRefCitation>
). Although, claws of
<taxonomicName lsidName="C. ebura" pageId="0" pageNumber="191" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">C. ebura</emphasis>
</taxonomicName>
sp. nov. and
<taxonomicName lsidName="C. funki" pageId="0" pageNumber="191" rank="species" species="funki">
<emphasis italics="true" pageId="0" pageNumber="191">C. funki</emphasis>
</taxonomicName>
are hooked with an acute basal and subapical tooth, this character is absent in
<taxonomicName lsidName="C. nigra" pageId="0" pageNumber="191" rank="species" species="nigra">
<emphasis italics="true" pageId="0" pageNumber="191">C. nigra</emphasis>
</taxonomicName>
, where a row of 6-8 teeth of unequal size can be found (
<bibRefCitation author="Ueno, M" journalOrPublisher="Memoirs of the College of Science, Kyoto Imperial University, Series B" pageId="0" pageNumber="191" pagination="19 - 63" refId="B20" refString="Ueno, M, 1928. Some Japanese mayfly nymphs. Memoirs of the College of Science, Kyoto Imperial University, Series B 6: 19 - 63" title="Some Japanese mayfly nymphs." volume="6" year="1928">
<normalizedToken originalValue="Uéno">Ueno</normalizedToken>
1928
</bibRefCitation>
, fig. 9h-i) or 5-8 denticles of tarsal claws (
<bibRefCitation DOI="https://doi.org/10.12782/specdiv.8.311" author="Ishiwata, S" journalOrPublisher="Species Diversity" pageId="0" pageNumber="191" pagination="311 - 346" refId="B9" refString="Ishiwata, S, 2003. A Revision of the genus Cincticostella (Insecta: Ephemeroptera: Ephemerellidae) from Japan. Species Diversity 8 (4): 311 - 346, DOI: https://doi.org/10.12782/specdiv.8.311" title="A Revision of the genus Cincticostella (Insecta: Ephemeroptera: Ephemerellidae) from Japan." url="https://doi.org/10.12782/specdiv.8.311" volume="8" year="2003">Ishiwata 2003</bibRefCitation>
). In addition, the dorsal surface of the mid- and hind femora of
<taxonomicName lsidName="C. ebura" pageId="0" pageNumber="191" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">C. ebura</emphasis>
</taxonomicName>
sp. nov. possess clavate setae while in
<taxonomicName lsidName="C. nigra" pageId="0" pageNumber="191" rank="species" species="nigra">
<emphasis italics="true" pageId="0" pageNumber="191">C. nigra</emphasis>
</taxonomicName>
, these setae are absent (
<bibRefCitation DOI="https://doi.org/10.12782/specdiv.8.311" author="Ishiwata, S" journalOrPublisher="Species Diversity" pageId="0" pageNumber="191" pagination="311 - 346" refId="B9" refString="Ishiwata, S, 2003. A Revision of the genus Cincticostella (Insecta: Ephemeroptera: Ephemerellidae) from Japan. Species Diversity 8 (4): 311 - 346, DOI: https://doi.org/10.12782/specdiv.8.311" title="A Revision of the genus Cincticostella (Insecta: Ephemeroptera: Ephemerellidae) from Japan." url="https://doi.org/10.12782/specdiv.8.311" volume="8" year="2003">Ishiwata 2003</bibRefCitation>
, figs 48, 52). Furthermore,
<taxonomicName lsidName="C. ebura" pageId="0" pageNumber="191" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">C. ebura</emphasis>
</taxonomicName>
sp. nov. can be distinguished from
<taxonomicName lsidName="C. nigra" pageId="0" pageNumber="191" rank="species" species="nigra">
<emphasis italics="true" pageId="0" pageNumber="191">C. nigra</emphasis>
</taxonomicName>
and
<taxonomicName lsidName="C. funki" pageId="0" pageNumber="191" rank="species" species="funki">
<emphasis italics="true" pageId="0" pageNumber="191">C. funki</emphasis>
</taxonomicName>
based on the combination of following characteristics: 1) small denticulate blade maxillary canine; 2) maxillary palp segment III cone-shaped; 3) all abdominal terga with long pairs of tubercles, especially on terga IV to VIII, on tergum X small and pointed; 4) anterolateral projection of the pronotum absent; 5) mature larvae length is almost less than two times of
<taxonomicName lsidName="C. funki" pageId="0" pageNumber="191" rank="species" species="funki">
<emphasis italics="true" pageId="0" pageNumber="191">C. funki</emphasis>
</taxonomicName>
; 6) mesonotum with single prominent median posterior tubercle and posteriorly with a pair of well-developed angular projections; and 7) a transverse discontinuous row of stout setae and without extra setae on surface of forefemora.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="191" type="etymology">
<paragraph pageId="0" pageNumber="191">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="191">
The specific epithet
<normalizedToken originalValue="ebura">'ebura'</normalizedToken>
, which means ivory, is a reference to the pairs of long and curve tubercles on the abdominal posteromedian margins.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="191" type="habitat">
<paragraph pageId="0" pageNumber="191">Habitat and ecology.</paragraph>
<paragraph pageId="0" pageNumber="191">
The type locality of
<taxonomicName authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella ebura</emphasis>
</taxonomicName>
sp. nov. is the Mae Nam Wa stream, Nan Province, Thailand (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. a The Mae Nam Wa stream, Bo Kluea district, Nan Province b microhabitat of the larvae of Cincticostella ebura sp. nov. c Cincticostella ebura sp. nov. larva (living)." figureDoi="10.3897/zookeys.1130.91039.figure6" httpUri="https://binary.pensoft.net/fig/772187" pageId="0" pageNumber="191">6a</figureCitation>
). The larvae were collected by handpicking and D-frame net kicking methods from cobble and pebbles within moderate- to fast-flowing current of run/riffle areas (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. a The Mae Nam Wa stream, Bo Kluea district, Nan Province b microhabitat of the larvae of Cincticostella ebura sp. nov. c Cincticostella ebura sp. nov. larva (living)." figureDoi="10.3897/zookeys.1130.91039.figure6" httpUri="https://binary.pensoft.net/fig/772187" pageId="0" pageNumber="191">6b</figureCitation>
). This study site also shows a high taxa richness of
<taxonomicName authorityName="Allen" authorityYear="1971" class="Insecta" kingdom="Animalia" lsidName="" order="Ephemeroptera" pageId="0" pageNumber="191" rank="superFamily" superFamily="Ephemerelloidea">Ephemerelloidea</taxonomicName>
larvae, as other species, including
<taxonomicName lsidName="C. insolta" pageId="0" pageNumber="191" rank="species" species="insolta">
<emphasis italics="true" pageId="0" pageNumber="191">C. insolta</emphasis>
</taxonomicName>
(Allen, 1971),
<taxonomicName baseAuthorityName="Kluge &amp; Zhou" baseAuthorityYear="2004" class="Insecta" family="Ephemerellidae" genus="Notacanthella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notacanthella quadrata" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="quadrata">
<emphasis italics="true" pageId="0" pageNumber="191">Notacanthella quadrata</emphasis>
</taxonomicName>
(Kluge &amp; Zhou, 2004),
<taxonomicName lsidName="N. commodema" pageId="0" pageNumber="191" rank="species" species="commodema">
<emphasis italics="true" pageId="0" pageNumber="191">N. commodema</emphasis>
</taxonomicName>
(Allen, 1971),
<taxonomicName authorityName="Sartori" authorityYear="2008" class="Insecta" family="Teloganodidae" genus="Dudgeodes" kingdom="Animalia" lsidName="Dudgeodes" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="191">Dudgeodes</emphasis>
</taxonomicName>
sp. and
<taxonomicName authorityName="Auychinda &amp; Boonsoong" authorityYear="2020" class="Insecta" family="Vietnamellidae" genus="Vietnamella" kingdom="Animalia" lsidName="Vietnamella nanensis" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="nanensis">
<emphasis italics="true" pageId="0" pageNumber="191">Vietnamella nanensis</emphasis>
</taxonomicName>
Auychinda, Sartori &amp; Boonsoong, 2020, co-occurred with the larvae of
<taxonomicName lsidName="C. ebura" pageId="0" pageNumber="191" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">C. ebura</emphasis>
</taxonomicName>
sp. nov.
</paragraph>
<caption doi="10.3897/zookeys.1130.91039.figure6" httpUri="https://binary.pensoft.net/fig/772187" pageId="0" pageNumber="191" start="Figure 6" startId="F6">
<paragraph pageId="0" pageNumber="191">
<emphasis bold="true" pageId="0" pageNumber="191">Figure 6.</emphasis>
<emphasis bold="true" pageId="0" pageNumber="191">a</emphasis>
The Mae Nam Wa stream, Bo Kluea district, Nan Province
<emphasis bold="true" pageId="0" pageNumber="191">b</emphasis>
microhabitat of the larvae of
<taxonomicName authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella ebura</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="191">c</emphasis>
<taxonomicName authorityName="Auychinda &amp; Sartori &amp; Boonsoong" authorityYear="2022" class="Insecta" family="Ephemerellidae" genus="Cincticostella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Cincticostella ebura" order="Ephemeroptera" pageId="0" pageNumber="191" phylum="Arthropoda" rank="species" species="ebura">
<emphasis italics="true" pageId="0" pageNumber="191">Cincticostella ebura</emphasis>
</taxonomicName>
sp. nov. larva (living).
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="191" type="distribution">
<paragraph pageId="0" pageNumber="191">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="191">Nan Province, northern Thailand.</paragraph>
</subSubSection>
</treatment>
</document>