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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1002.58017" ID-GBIF-Dataset="8bedb86f-0c38-4738-b1b5-1dab270c95d2" ID-PMC="PMC7746671" ID-Pensoft-Pub="1313-2970-1002-1" ID-Pensoft-UUID="92722606C9CB50B6A63A1345E68167F9" ID-PubMed="33363429" ID-ZooBank="C9EAF9DCD87D402FAC35CC4983D2E142" ModsDocID="1313-2970-1002-1" checkinTime="1607628106955" checkinUser="pensoft" docAuthor="Kaltenbach, Thomas, Garces, Jhoana M. &amp; Gattolliat, Jean-Luc" docDate="2020" docId="E37055B352335700B757FE3D2CB7D608" docLanguage="en" docName="ZooKeys 1002: 1-114" docOrigin="ZooKeys 1002" docPubDate="2020-12-10" docSource="http://dx.doi.org/10.3897/zookeys.1002.58017" docTitle="Labiobaetis gamay Kaltenbach &amp; Garces &amp; Gattolliat 2020, sp. nov." docType="treatment" docUuid="8FB0BC17-3C57-4B66-A271-95FA834C5FAC" docUuidSource="ZooBank" docVersion="4" id="92722606C9CB50B6A63A1345E68167F9" lastPageNumber="1" masterDocId="92722606C9CB50B6A63A1345E68167F9" masterDocTitle="The success story of Labiobaetis Novikova &amp; Kluge in the Philippines (Ephemeroptera, Baetidae), with description of 18 new species" masterLastPageNumber="114" masterPageNumber="1" pageNumber="1" updateTime="1668146493680" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>The success story of Labiobaetis Novikova &amp; Kluge in the Philippines (Ephemeroptera, Baetidae), with description of 18 new species</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Kaltenbach, Thomas</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-8052-0388</mods:nameIdentifier>
<mods:affiliation>Museum of Zoology, Palais de Rumine, Place Riponne 6, CH- 1005 Lausanne, Switzerland &amp; University of Lausanne (UNIL), Department of Ecology and Evolution, CH- 1015 Lausanne, Switzerland</mods:affiliation>
<mods:nameIdentifier type="email">thomas.kaltenbach@bluewin.ch</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Garces, Jhoana M.</mods:namePart>
<mods:affiliation>Department of Biology, School of Science and Engineering, Ateneo de Manila University, Quezon City, 1108 Metro Manila, Philippines</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Gattolliat, Jean-Luc</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-5873-5083</mods:nameIdentifier>
<mods:affiliation>Museum of Zoology, Palais de Rumine, Place Riponne 6, CH- 1005 Lausanne, Switzerland &amp; University of Lausanne (UNIL), Department of Ecology and Evolution, CH- 1015 Lausanne, Switzerland</mods:affiliation>
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<mods:title>ZooKeys</mods:title>
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<mods:part>
<mods:date>2020</mods:date>
<mods:detail type="pubDate">
<mods:number>2020-12-10</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>1002</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>114</mods:end>
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<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.1002.58017</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1002.58017</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-1002-1</mods:identifier>
<mods:identifier type="ZooBank">C9EAF9DCD87D402FAC35CC4983D2E142</mods:identifier>
<mods:identifier type="Pensoft-UUID">92722606C9CB50B6A63A1345E68167F9</mods:identifier>
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<treatment ID-GBIF-Taxon="170725665" LSID="urn:lsid:zoobank.org:act:8FB0BC17-3C57-4B66-A271-95FA834C5FAC" httpUri="http://treatment.plazi.org/id/E37055B352335700B757FE3D2CB7D608" lastPageNumber="1" pageId="0" pageNumber="1">
<subSubSection pageId="0" pageNumber="1" type="nomenclature">
<paragraph pageId="0" pageNumber="1">
<taxonomicName LSID="http://zoobank.org/8FB0BC17-3C57-4B66-A271-95FA834C5FAC" authority="Kaltenbach &amp; Garces &amp; Gattolliat, 2020" authorityName="Kaltenbach &amp; Garces &amp; Gattolliat" authorityYear="2020" class="Insecta" family="Baetidae" genus="Labiobaetis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Labiobaetis gamay" order="Ephemeroptera" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="gamay" status="sp. nov.">Labiobaetis gamay</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="1">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figure 17" captionStartId="F17" captionText="Figure 17. Labiobaetis gamay sp. nov., larva morphology a labrum b setae of arc on dorsal surface of labrum c right mandible d right prostheca e left mandible f left prostheca g hypopharynx and superlinguae h maxilla i labium." figureDoi="10.3897/zookeys.1002.58017.figure17" httpUri="https://binary.pensoft.net/fig/484682" pageId="0" pageNumber="1">Figures 17</figureCitation>
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Labiobaetis gamay sp. nov., larva morphology a foreleg b fore claw c tergum IV d gill IV e paraproct f antennal scape g metanotum." figureDoi="10.3897/zookeys.1002.58017.figure18" httpUri="https://binary.pensoft.net/fig/484683" pageId="0" pageNumber="1">, 18</figureCitation>
<figureCitation captionStart="Figure 43" captionStartId="F43" captionText="Figure 43. Habitus, larvae, dorsal view a Labiobaetis gamay sp. nov. b Labiobaetis pangantihoni sp. nov. c Labiobaetis tagbanwa sp. nov." figureDoi="10.3897/zookeys.1002.58017.figure43" httpUri="https://binary.pensoft.net/fig/484708" pageId="0" pageNumber="1">, 43a</figureCitation>
<figureCitation captionStart="Figure 49" captionStartId="F49" captionText="Figure 49. Distribution of Labiobaetis in the Philippines a Group Labiobaetis operosus b Group Labiobaetis sumigarensis c Group Labiobaetis vallus." figureDoi="10.3897/zookeys.1002.58017.figure49" httpUri="https://binary.pensoft.net/fig/484714" pageId="0" pageNumber="1">, 49a</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="diagnosis">
<paragraph pageId="0" pageNumber="1">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Larva.</emphasis>
Following combination of characters: A) dorsal surface of labrum with submarginal arc of one plus 7-9 feathered setae with strongly reduced feathers; B) labial palp segment II with a broad, thumb-like distomedial protuberance; segment III conical; C) fore femur rather broad, length ca. 3
<normalizedToken originalValue="×">x</normalizedToken>
maximum width, dorsal margin with 10-14 curved, spine-like setae; D) hind protoptera well developed; E) paraproct distally not expanded, with 19-22 stout marginal spines.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="description">
<paragraph pageId="0" pageNumber="1">Description.</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Larva</emphasis>
(Figs
<figureCitation captionStart="Figure 17" captionStartId="F17" captionText="Figure 17. Labiobaetis gamay sp. nov., larva morphology a labrum b setae of arc on dorsal surface of labrum c right mandible d right prostheca e left mandible f left prostheca g hypopharynx and superlinguae h maxilla i labium." figureDoi="10.3897/zookeys.1002.58017.figure17" httpUri="https://binary.pensoft.net/fig/484682" pageId="0" pageNumber="1">17</figureCitation>
,
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Labiobaetis gamay sp. nov., larva morphology a foreleg b fore claw c tergum IV d gill IV e paraproct f antennal scape g metanotum." figureDoi="10.3897/zookeys.1002.58017.figure18" httpUri="https://binary.pensoft.net/fig/484683" pageId="0" pageNumber="1">18</figureCitation>
,
<figureCitation captionStart="Figure 43" captionStartId="F43" captionText="Figure 43. Habitus, larvae, dorsal view a Labiobaetis gamay sp. nov. b Labiobaetis pangantihoni sp. nov. c Labiobaetis tagbanwa sp. nov." figureDoi="10.3897/zookeys.1002.58017.figure43" httpUri="https://binary.pensoft.net/fig/484708" pageId="0" pageNumber="1">43a</figureCitation>
). Body length 4.6-5.2 mm. Cerci ca. 2/3 of body length. Paracercus ca. 2/3 of cerci length. Antenna approx. twice as long as head length.
</paragraph>
<caption doi="10.3897/zookeys.1002.58017.figure17" httpUri="https://binary.pensoft.net/fig/484682" pageId="0" pageNumber="1" start="Figure 17" startId="F17">
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Figure 17.</emphasis>
<taxonomicName authorityName="Kaltenbach &amp; Garces &amp; Gattolliat" authorityYear="2020" class="Insecta" family="Baetidae" genus="Labiobaetis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Labiobaetis gamay" order="Ephemeroptera" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="gamay">
<emphasis italics="true" pageId="0" pageNumber="1">Labiobaetis gamay</emphasis>
</taxonomicName>
sp. nov., larva morphology
<emphasis bold="true" pageId="0" pageNumber="1">a</emphasis>
labrum
<emphasis bold="true" pageId="0" pageNumber="1">b</emphasis>
setae of arc on dorsal surface of labrum
<emphasis bold="true" pageId="0" pageNumber="1">c</emphasis>
right mandible
<emphasis bold="true" pageId="0" pageNumber="1">d</emphasis>
right prostheca
<emphasis bold="true" pageId="0" pageNumber="1">e</emphasis>
left mandible
<emphasis bold="true" pageId="0" pageNumber="1">f</emphasis>
left prostheca
<emphasis bold="true" pageId="0" pageNumber="1">g</emphasis>
hypopharynx and superlinguae
<emphasis bold="true" pageId="0" pageNumber="1">h</emphasis>
maxilla
<emphasis bold="true" pageId="0" pageNumber="1">i</emphasis>
labium.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">
<emphasis italics="true" pageId="0" pageNumber="1">Colouration</emphasis>
.
</emphasis>
Head, thorax, and abdomen dorsally grey-brown, with bright pattern as in Fig.
<figureCitation captionStart="Figure 43" captionStartId="F43" captionText="Figure 43. Habitus, larvae, dorsal view a Labiobaetis gamay sp. nov. b Labiobaetis pangantihoni sp. nov. c Labiobaetis tagbanwa sp. nov." figureDoi="10.3897/zookeys.1002.58017.figure43" httpUri="https://binary.pensoft.net/fig/484708" pageId="0" pageNumber="1">43a</figureCitation>
, abdominal tergites I, VII, and X mainly light brown. Fore protoptera light brown with darker striation. Head, thorax, and abdomen ventrally ecru, frons and genae grey-brown, abdominal sternites VIII and IX grey-brown. Legs ecru, femur with two sometimes merged grey-brown distomedial spots, tarsus distally grey-brown. Caudalii light brown, with a grey- brown band at ca. 1/3 of cerci, cerci distally grey-brown.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Antenna</emphasis>
(Fig.
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Labiobaetis gamay sp. nov., larva morphology a foreleg b fore claw c tergum IV d gill IV e paraproct f antennal scape g metanotum." figureDoi="10.3897/zookeys.1002.58017.figure18" httpUri="https://binary.pensoft.net/fig/484683" pageId="0" pageNumber="1">18f</figureCitation>
) with scape and pedicel subcylindrical, with well-developed distolateral process at scape.
</paragraph>
<caption doi="10.3897/zookeys.1002.58017.figure18" httpUri="https://binary.pensoft.net/fig/484683" pageId="0" pageNumber="1" start="Figure 18" startId="F18">
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Figure 18.</emphasis>
<taxonomicName authorityName="Kaltenbach &amp; Garces &amp; Gattolliat" authorityYear="2020" class="Insecta" family="Baetidae" genus="Labiobaetis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Labiobaetis gamay" order="Ephemeroptera" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="gamay">
<emphasis italics="true" pageId="0" pageNumber="1">Labiobaetis gamay</emphasis>
</taxonomicName>
sp. nov., larva morphology
<emphasis bold="true" pageId="0" pageNumber="1">a</emphasis>
foreleg
<emphasis bold="true" pageId="0" pageNumber="1">b</emphasis>
fore claw
<emphasis bold="true" pageId="0" pageNumber="1">c</emphasis>
tergum IV
<emphasis bold="true" pageId="0" pageNumber="1">d</emphasis>
gill IV
<emphasis bold="true" pageId="0" pageNumber="1">e</emphasis>
paraproct
<emphasis bold="true" pageId="0" pageNumber="1">f</emphasis>
antennal scape
<emphasis bold="true" pageId="0" pageNumber="1">g</emphasis>
metanotum.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Labrum</emphasis>
(Fig.
<figureCitation captionStart="Figure 17" captionStartId="F17" captionText="Figure 17. Labiobaetis gamay sp. nov., larva morphology a labrum b setae of arc on dorsal surface of labrum c right mandible d right prostheca e left mandible f left prostheca g hypopharynx and superlinguae h maxilla i labium." figureDoi="10.3897/zookeys.1002.58017.figure17" httpUri="https://binary.pensoft.net/fig/484682" pageId="0" pageNumber="1">17a, b</figureCitation>
). Rectangular, length 0.7
<normalizedToken originalValue="×">x</normalizedToken>
maximum width. Distal margin with medial emargination and a small process. Dorsally with medium, fine, simple setae scattered over surface; submarginal arc of setae composed of one plus 7-9 long, feathered setae with strongly reduced feathers. Ventrally with marginal row of setae composed of lateral and anterolateral long, feathered setae and medial long, bifid, pectinate setae; ventral surface with ca. five short, spine-like setae near lateral and anterolateral margin.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Right mandible</emphasis>
(Fig.
<figureCitation captionStart="Figure 17" captionStartId="F17" captionText="Figure 17. Labiobaetis gamay sp. nov., larva morphology a labrum b setae of arc on dorsal surface of labrum c right mandible d right prostheca e left mandible f left prostheca g hypopharynx and superlinguae h maxilla i labium." figureDoi="10.3897/zookeys.1002.58017.figure17" httpUri="https://binary.pensoft.net/fig/484682" pageId="0" pageNumber="1">17c, d</figureCitation>
). Incisor and kinetodontium fused. Incisor with four denticles; kinetodontium with three denticles, inner margin of innermost denticle with a row of thin setae. Prostheca robust, apically denticulate. Margin between prostheca and mola slightly convex. Tuft of setae at apex of mola present.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Left mandible</emphasis>
(Fig.
<figureCitation captionStart="Figure 17" captionStartId="F17" captionText="Figure 17. Labiobaetis gamay sp. nov., larva morphology a labrum b setae of arc on dorsal surface of labrum c right mandible d right prostheca e left mandible f left prostheca g hypopharynx and superlinguae h maxilla i labium." figureDoi="10.3897/zookeys.1002.58017.figure17" httpUri="https://binary.pensoft.net/fig/484682" pageId="0" pageNumber="1">17e, f</figureCitation>
). Incisor and kinetodontium fused. Incisor with four denticles; kinetodontium with three denticles. Prostheca robust, apically with small denticles and comb-shaped structure. Margin between prostheca and mola straight, with few minute denticles. Subtriangular process long and slender, above level of area between prostheca and mola. Denticles of mola apically constricted. Tuft of setae at apex of mola present.
</paragraph>
<paragraph pageId="0" pageNumber="1">Both mandibles with lateral margins almost straight. Basal half with fine, simple setae scattered over dorsal surface.</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Hypopharynx and superlinguae</emphasis>
(Fig.
<figureCitation captionStart="Figure 17" captionStartId="F17" captionText="Figure 17. Labiobaetis gamay sp. nov., larva morphology a labrum b setae of arc on dorsal surface of labrum c right mandible d right prostheca e left mandible f left prostheca g hypopharynx and superlinguae h maxilla i labium." figureDoi="10.3897/zookeys.1002.58017.figure17" httpUri="https://binary.pensoft.net/fig/484682" pageId="0" pageNumber="1">17g</figureCitation>
). Lingua approx. as long as superlinguae. Lingua longer than broad; medial tuft of stout setae well developed, short; distal half laterally expanded. Superlinguae distally rounded; lateral margin rounded; fine, long, simple setae along distal margin.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Maxilla</emphasis>
(Fig.
<figureCitation captionStart="Figure 17" captionStartId="F17" captionText="Figure 17. Labiobaetis gamay sp. nov., larva morphology a labrum b setae of arc on dorsal surface of labrum c right mandible d right prostheca e left mandible f left prostheca g hypopharynx and superlinguae h maxilla i labium." figureDoi="10.3897/zookeys.1002.58017.figure17" httpUri="https://binary.pensoft.net/fig/484682" pageId="0" pageNumber="1">17h</figureCitation>
). Galea-lacinia ventrally with two simple, apical setae under canines. Inner dorsal row of setae with three denti-setae, distal denti-seta tooth-like, middle and proximal denti-setae slender, bifid and pectinate. Medially with one bipectinate, spine-like seta and four long, simple setae. Maxillary palp slightly longer than length of galea-lacinia; 2-segmented; palp segment II 1.4
<normalizedToken originalValue="×">x</normalizedToken>
length of segment I; setae on maxillary palp fine, simple, scattered over surface of segments I and II; apex of last segment rounded, with slight excavation at inner distolateral margin.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Labium</emphasis>
(Fig.
<figureCitation captionStart="Figure 17" captionStartId="F17" captionText="Figure 17. Labiobaetis gamay sp. nov., larva morphology a labrum b setae of arc on dorsal surface of labrum c right mandible d right prostheca e left mandible f left prostheca g hypopharynx and superlinguae h maxilla i labium." figureDoi="10.3897/zookeys.1002.58017.figure17" httpUri="https://binary.pensoft.net/fig/484682" pageId="0" pageNumber="1">17i</figureCitation>
). Glossa basally broad, narrowing toward apex; shorter than paraglossa; inner margin with ca. nine spine-like setae, distalmost seta much longer than other setae; apex with two long and one medium, robust, pectinate setae and one short, robust seta; outer margin with seven spine-like setae increasing in length distally; ventral surface with fine, simple, scattered setae. Paraglossa sub-rectangular, curved inward; apex rounded; with three rows of long, robust, distally pectinate setae in apical area and one or two medium, simple setae in anteromedial area; dorsally with a row of five long, spine-like, simple setae near inner margin. Labial palp with segment I 0.8
<normalizedToken originalValue="×">x</normalizedToken>
length of segments II and III combined. Segment I ventrally with short, fine, simple setae. Segment II with broad thumb-like distomedial protuberance; distomedial protuberance 0.7
<normalizedToken originalValue="×">x</normalizedToken>
width of base of segment III; ventral surface with short, fine, simple setae; dorsally with a row of three long, spine-like setae near outer margin. Segment III conical; apex slightly truncate; length 1.1
<normalizedToken originalValue="×">x</normalizedToken>
width; ventrally covered with short, spine-like, simple setae and short, fine, simple setae.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Hind protoptera</emphasis>
(Fig.
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Labiobaetis gamay sp. nov., larva morphology a foreleg b fore claw c tergum IV d gill IV e paraproct f antennal scape g metanotum." figureDoi="10.3897/zookeys.1002.58017.figure18" httpUri="https://binary.pensoft.net/fig/484683" pageId="0" pageNumber="1">18g</figureCitation>
) well developed.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Foreleg</emphasis>
(Fig.
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Labiobaetis gamay sp. nov., larva morphology a foreleg b fore claw c tergum IV d gill IV e paraproct f antennal scape g metanotum." figureDoi="10.3897/zookeys.1002.58017.figure18" httpUri="https://binary.pensoft.net/fig/484683" pageId="0" pageNumber="1">18a, b</figureCitation>
). Ratio of foreleg segments 1.4:1.0:0.8:0.3.
<emphasis bold="true" pageId="0" pageNumber="1">
<emphasis italics="true" pageId="0" pageNumber="1">Femur</emphasis>
.
</emphasis>
Length ca. 3
<normalizedToken originalValue="×">x</normalizedToken>
maximum width. Dorsal margin with 10-14 curved, spine-like setae, mostly one or two setae additionally near margin in basal area; length of setae 0.19
<normalizedToken originalValue="×">x</normalizedToken>
maximum width of femur. Apex rounded, with a pair of spine-like setae and some short, stout setae. Many stout, lanceolate setae scattered along ventral margin; femoral patch absent.
<emphasis bold="true" pageId="0" pageNumber="1">
<emphasis italics="true" pageId="0" pageNumber="1">Tibia</emphasis>
.
</emphasis>
Dorsal margin with a row of short, spine-like setae and fine simple setae, on apex one longer, spine-like seta. Ventral margin with a row of short, curved, spine-like setae, on apex some longer, partly bipectinate setae and a tuft of fine, simple setae. Anterior surface scattered with stout, lanceolate setae. Patellotibial suture present on basal 2/3.
<emphasis bold="true" pageId="0" pageNumber="1">
<emphasis italics="true" pageId="0" pageNumber="1">Tarsus</emphasis>
.
</emphasis>
Dorsal margin with a row of short, stout setae and fine, simple setae. Ventral margin with a row of curved, spine-like setae and in distal area fine simple setae. Claw with one row of 12 or 13 denticles; distally pointed; with ca. four stripes; subapical setae absent.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Terga</emphasis>
(Fig.
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Labiobaetis gamay sp. nov., larva morphology a foreleg b fore claw c tergum IV d gill IV e paraproct f antennal scape g metanotum." figureDoi="10.3897/zookeys.1002.58017.figure18" httpUri="https://binary.pensoft.net/fig/484683" pageId="0" pageNumber="1">18c</figureCitation>
). Surface with irregular rows of U-shaped scale bases and scattered fine, simple setae. Posterior margin of tergum IV with triangular spines, wider than long.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Gills</emphasis>
(Fig.
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Labiobaetis gamay sp. nov., larva morphology a foreleg b fore claw c tergum IV d gill IV e paraproct f antennal scape g metanotum." figureDoi="10.3897/zookeys.1002.58017.figure18" httpUri="https://binary.pensoft.net/fig/484683" pageId="0" pageNumber="1">18d</figureCitation>
). Present on segments I-VII. Margin with small denticles intercalating fine simple setae. Tracheae extending from main trunk to inner and outer margins. Gill I ca. 2/3 length of segment II. Gill IV as long as length of segments V and
<normalizedToken originalValue="½">1/2</normalizedToken>
VI combined. Gill VII as long as length of segment VIII.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Paraproct</emphasis>
(Fig.
<figureCitation captionStart="Figure 18" captionStartId="F18" captionText="Figure 18. Labiobaetis gamay sp. nov., larva morphology a foreleg b fore claw c tergum IV d gill IV e paraproct f antennal scape g metanotum." figureDoi="10.3897/zookeys.1002.58017.figure18" httpUri="https://binary.pensoft.net/fig/484683" pageId="0" pageNumber="1">18e</figureCitation>
). Distally not expanded, with 19-22 stout, marginal spines. Surface scattered with U-shaped scale bases and fine, simple setae. Cercotractor with numerous small, marginal spines.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="etymology">
<paragraph pageId="0" pageNumber="1">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="1">Named after the Cebuano word meaning reduced, referring to the strongly reduced feathers of the submarginal setae on the dorsal labrum surface.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="distribution">
<paragraph pageId="0" pageNumber="1">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="1">
Philippines: Luzon and Mindoro (Fig.
<figureCitation captionStart="Figure 49" captionStartId="F49" captionText="Figure 49. Distribution of Labiobaetis in the Philippines a Group Labiobaetis operosus b Group Labiobaetis sumigarensis c Group Labiobaetis vallus." figureDoi="10.3897/zookeys.1002.58017.figure49" httpUri="https://binary.pensoft.net/fig/484714" pageId="0" pageNumber="1">49a</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="biological aspects">
<paragraph pageId="0" pageNumber="1">Biological aspects.</paragraph>
<paragraph pageId="0" pageNumber="1">The specimens were collected at altitudes from sea level to 140 m, partly on hygropetric rocks or rock surface in riffles or runs.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="type material">
<paragraph pageId="0" pageNumber="1">Type material.</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">
<emphasis italics="true" pageId="0" pageNumber="1">Holotype</emphasis>
.
</emphasis>
Philippines • larva; Oriental Mindoro, Roxas, Brgy. San Vicente, lower reach of Taugad River;
<geoCoordinate degrees="12" direction="north" minutes="37.30" orientation="latitude" precision="9" value="12.621667">12°37.30'N</geoCoordinate>
,
<geoCoordinate degrees="121" direction="east" minutes="22.97" orientation="longitude" precision="9" value="121.382835">121°22.97'E</geoCoordinate>
; 140 m; 2016-2019; leg. Freitag and Garces; on slide; GBIFCH 00592274; PNM.
<emphasis bold="true" pageId="0" pageNumber="1">
<emphasis italics="true" pageId="0" pageNumber="1">Paratypes</emphasis>
.
</emphasis>
Philippines • 27 larvae; same data as holotype; 2 on slide; GenBank. MT830953, MT830954; GBIFCH 00 654922, GBIFCH 00763637; ZSM; 25 in alcohol; GBIFCH 00515433, GBIFCH 00515434, GBIFCH 00515458, GBIFCH 00515460; ZSM • 10 larvae; Oriental Mindoro, Roxas, Brgy. San Vicente;
<geoCoordinate degrees="12" direction="north" minutes="37" orientation="latitude" precision="15" seconds="06" value="12.618334">12°37'06&quot;N</geoCoordinate>
,
<geoCoordinate degrees="121" direction="east" minutes="23" orientation="longitude" precision="15" seconds="49" value="121.39694">121°23'49&quot;E</geoCoordinate>
; 140 m; 2016-2019; leg. Freitag, Garces and Pangantihon; 2 on slides; GenBank: MT830955; GBIFCH 00763639, GBIFCH 00763338; AdMU; 8 in alcohol; GBIFCH 00515435, GBIFCH 00515459; AdMU • 15 larvae; Luzon, La Union, Sudipen Municipality, Amburayan River;
<geoCoordinate degrees="16" direction="north" minutes="54" orientation="latitude" precision="15" seconds="38" value="16.910555">16°54'38&quot;N</geoCoordinate>
,
<geoCoordinate degrees="120" direction="east" minutes="28" orientation="longitude" precision="15" seconds="40" value="120.477776">120°28'40&quot;E</geoCoordinate>
; 20 m; 14.IV.2019; leg. Freitag, Garces and Pangantihon; 1 on slide; GenBank: MT830956; GBIFCH 00763655; ZSM; 14 in alcohol; GBIFCH 00515436, GBIFCH 00515461; ZSM • 31 larvae; Luzon, Ilocos Sur, Suyo Municipality, big river downstream Sangbay n. Ragsak;
<geoCoordinate degrees="16" direction="north" minutes="59" orientation="latitude" precision="15" seconds="32" value="16.992222">16°59'32&quot;N</geoCoordinate>
,
<geoCoordinate degrees="120" direction="east" minutes="32" orientation="longitude" precision="15" seconds="21" value="120.53917">120°32'21&quot;E</geoCoordinate>
; 100 m; 15.IV.2019; leg. Freitag, Garces and Pangantihon; 1 on slide; GenBank: MT830957; GBIFCH 00763657; ZSM; 30 in alcohol; GBIFCH 00515437; ZSM • 14 larvae; Luzon, La Union, San Juan Municipality, Baroro River;
<geoCoordinate degrees="16" direction="north" minutes="39" orientation="latitude" precision="15" seconds="27" value="16.6575">16°39'27&quot;N</geoCoordinate>
,
<geoCoordinate degrees="120" direction="east" minutes="25" orientation="longitude" precision="15" seconds="55" value="120.43194">120°25'55&quot;E</geoCoordinate>
; 90 m; 19.IV.1996; leg. Mendoza; 1 on slide; GenBank: MT830958; GBIFCH 00763658; ZSM; 13 in alcohol; GBIFCH 00515438, GBIFCH 515439; ZSM.
</paragraph>
</subSubSection>
</treatment>
</document>