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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1144.98644" ID-GBIF-Dataset="3b01e63b-186d-4a0a-ac41-8e2a8a4435c1" ID-Pensoft-Pub="1313-2970-1144-171" ID-Pensoft-UUID="D148129EDAED5CD0ACA97302FBE35254" ID-ZooBank="C11074779CE243F9998521D42836A8F4" ModsDocID="1313-2970-1144-171" checkinTime="1675346916091" checkinUser="pensoft" docAuthor="Tran, Ngat Thi, Engel, Michael S., Nguyen, Cuong Quang, Tran, Duong Dinh &amp; Nguyen, Lien Thi Phuong" docDate="2023" docId="B438F6820FA6503C8D7CF992F2766201" docLanguage="en" docName="ZooKeys 1144: 171-196" docOrigin="ZooKeys 1144" docPubDate="2023-02-02" docSource="http://dx.doi.org/10.3897/zookeys.1144.98644" docTitle="Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen 2023, sp. nov." docType="treatment" docUuid="30D3EF30-64BA-45CA-A1F2-442C118BA7DD" docUuidSource="ZooBank" docVersion="2" id="D148129EDAED5CD0ACA97302FBE35254" lastPageNumber="171" masterDocId="D148129EDAED5CD0ACA97302FBE35254" masterDocTitle="The bee genus Anthidiellum in Vietnam: descriptions of five new species and the first male of Anthidiellum coronum (Hymenoptera, Megachilidae)" masterLastPageNumber="196" masterPageNumber="171" pageNumber="171" updateTime="1675347537077" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>The bee genus Anthidiellum in Vietnam: descriptions of five new species and the first male of Anthidiellum coronum (Hymenoptera, Megachilidae)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Tran, Ngat Thi</mods:namePart>
<mods:affiliation>Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam &amp; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam</mods:affiliation>
<mods:nameIdentifier type="email">tranthingat1012@gmail.com</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Engel, Michael S.</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-3067-077X</mods:nameIdentifier>
<mods:affiliation>Division of Invertebrate Zoology, American Museum of Natural History, Central Park West at 79 &amp; th</mods:affiliation>
<mods:nameIdentifier type="email">msengel@ku.edu</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Nguyen, Cuong Quang</mods:namePart>
<mods:affiliation>Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Tran, Duong Dinh</mods:namePart>
<mods:affiliation>Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Nguyen, Lien Thi Phuong</mods:namePart>
<mods:affiliation>Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam &amp; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Nghia Do, Cau Giay, Hanoi, Vietnam</mods:affiliation>
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<mods:title>ZooKeys</mods:title>
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<mods:date>2023</mods:date>
<mods:detail type="pubDate">
<mods:number>2023-02-02</mods:number>
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<mods:detail type="volume">
<mods:number>1144</mods:number>
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<mods:extent unit="page">
<mods:start>171</mods:start>
<mods:end>196</mods:end>
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<mods:url>http://dx.doi.org/10.3897/zookeys.1144.98644</mods:url>
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<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1144.98644</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-1144-171</mods:identifier>
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<treatment LSID="urn:lsid:zoobank.org:act:30D3EF30-64BA-45CA-A1F2-442C118BA7DD" httpUri="http://treatment.plazi.org/id/B438F6820FA6503C8D7CF992F2766201" lastPageNumber="171" pageId="0" pageNumber="171">
<subSubSection pageId="0" pageNumber="171" type="nomenclature">
<paragraph pageId="0" pageNumber="171">
<taxonomicName LSID="https://zoobank.org/30D3EF30-64BA-45CA-A1F2-442C118BA7DD" authority="Tran, Engel &amp; Nguyen" authorityName="Tran, Engel &amp; Nguyen" authorityYear="2023" class="Insecta" family="Megachilidae" genus="Anthidiellum" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anthidiellum (Pycnanthidium) flavaxilla" order="Hymenoptera" pageId="0" pageNumber="171" phylum="Arthropoda" rank="species" species="flavaxilla" status="sp. nov." subGenus="Pycnanthidium">Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="171">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="171" type="description">
<paragraph pageId="0" pageNumber="171">
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">Fig. 6A-G</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="171" type="type material">
<paragraph pageId="0" pageNumber="171">Type material.</paragraph>
<paragraph pageId="0" pageNumber="171">
<emphasis bold="true" pageId="0" pageNumber="171">
<emphasis italics="true" pageId="0" pageNumber="171">Holotype</emphasis>
.
</emphasis>
Vietnam: ♀, Gia Lai, Mang Yang, Ayun, Kon Ka Kinh NP,
<geoCoordinate degrees="14" direction="north" minutes="13" orientation="latitude" precision="15" seconds="18" value="14.221666">14°13'18&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="19" orientation="longitude" precision="15" seconds="02" value="108.31722">108°19'02&quot;E</geoCoordinate>
, alt. 907 m, 26.iii.2022 [26 March 2022], Lien Thi Phuong Nguyen, Ngat Thi Tran, Cuong Quang Nguyen leg. [IEBR].
</paragraph>
<paragraph pageId="0" pageNumber="171">
<emphasis bold="true" pageId="0" pageNumber="171">
<emphasis italics="true" pageId="0" pageNumber="171">Paratypes</emphasis>
.
</emphasis>
Vietnam: 3♀♀, same data as holotype [1♀ in IEBR; 2♀♀ in AMNH]; 2♀♀, Gia Lai, Mang Yang, Ayun, Kon Ka Kinh NP,
<geoCoordinate degrees="14" direction="north" minutes="12" orientation="latitude" precision="15" seconds="11" value="14.203055">14°12'11&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="18" orientation="longitude" precision="15" seconds="58" value="108.31612">108°18'58&quot;E</geoCoordinate>
, alt. 834 m, 25.iii.2022 [25 March 2022], Lien Thi Phuong Nguyen, Ngat Thi Tran, Cuong Quang Nguyen leg.; 1♀, Gia Lai, Mang Yang, Ayun, Kon Ka Kinh NP,
<geoCoordinate degrees="14" direction="north" minutes="12" orientation="latitude" precision="15" seconds="11" value="14.203055">14°12'11&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="18" orientation="longitude" precision="15" seconds="58" value="108.31612">108°18'58&quot;E</geoCoordinate>
, alt. 834 m, 26.iv.2022 [26 April 2022], Lien Thi Phuong Nguyen, Ngat Thi Tran leg.; 1♀, Gia Lai, Mang Yang, Ayun, Kon Ka Kinh NP,
<geoCoordinate degrees="14" direction="north" minutes="12" orientation="latitude" precision="15" seconds="11" value="14.203055">14°12'11&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="18" orientation="longitude" precision="15" seconds="58" value="108.31612">108°18'58&quot;E</geoCoordinate>
, alt. 834 m, 27.iv.2022 [27 April 2022], Lien Thi Phuong Nguyen, Ngat Thi Tran leg.; 1♀, Gia Lai, Mang Yang, Ayun, Kon Ka Kinh NP,
<geoCoordinate degrees="14" direction="north" minutes="12" orientation="latitude" precision="15" seconds="11" value="14.203055">14°12'11&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="18" orientation="longitude" precision="15" seconds="58" value="108.31612">108°18'58&quot;E</geoCoordinate>
, alt. 834 m, 28.iv.2022 [28 April 2022], Lien Thi Phuong Nguyen, Ngat Thi Tran leg. [IEBR].
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="171" type="diagnosis">
<paragraph pageId="0" pageNumber="171">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="171">
The female of this species is most similar to that of
<taxonomicName lsidName="A. (P.) carinatum" pageId="0" pageNumber="171" rank="species" species="carinatum" subGenus="P.">A. (P.) carinatum</taxonomicName>
(
<bibRefCitation author="Wu, YR" journalOrPublisher="Nature in Singapore" pageId="0" pageNumber="171" refId="B17" refString="Wu, YR, 1962. Yunnan organism investigation report. Apoidea II, Megachilidae, Anthidiini. Acta Entomologica Sinica 11(Supplement): 161-171. [In Chinese]" title="Yunnan organism investigation report. Apoidea II, Megachilidae, Anthidiini. Acta Entomologica Sinica 11 (Supplement): 161 - 171. [In Chinese]" year="1962">Wu 1962</bibRefCitation>
) as both have the metatibia and metabasitarsus each with a longitudinal carina on the prolateral surface; tridentate mandibles, with the teeth sharp apically; similar yellow markings on the face; and metasomal T2 black. The new species can be distinguished in the female from the latter species by the following: mesoscutum with short anterior-facing surface at medioapical margin, with anterior surface polished and impunctate (mesoscutum nearly straight medioapically, with dense punctures just before margin in
<taxonomicName lsidName="A. carinatum" pageId="0" pageNumber="171" rank="species" species="carinatum">
<emphasis italics="true" pageId="0" pageNumber="171">A. carinatum</emphasis>
</taxonomicName>
); mesoscutellum black, strongly convex, with mediolongitudinal depression apically and giving apical surface a weakly bigibbous appearance (mesoscutellum nearly flat and yellow to yellowish brown on margin apicolaterally in
<taxonomicName lsidName="A. carinatum" pageId="0" pageNumber="171" rank="species" species="carinatum">
<emphasis italics="true" pageId="0" pageNumber="171">A. carinatum</emphasis>
</taxonomicName>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="171" type="description">
<paragraph pageId="0" pageNumber="171">Description.</paragraph>
<paragraph pageId="0" pageNumber="171">♀: body length 6.5-7.0 mm (holotype = 7.0 mm), forewing length 6.0-6.2 mm (holotype = 6.2 mm).</paragraph>
<paragraph pageId="0" pageNumber="171">
<emphasis bold="true" pageId="0" pageNumber="171">
<emphasis italics="true" pageId="0" pageNumber="171">Structure</emphasis>
.
</emphasis>
Head broader than long, about 1.2
<normalizedToken originalValue="×">x</normalizedToken>
as broad as long (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6C</figureCitation>
). Compound eyes about 2.1
<normalizedToken originalValue="×">x</normalizedToken>
as long as broad and 1.4
<normalizedToken originalValue="×">x</normalizedToken>
genal width. Mandible tridentate, teeth gradually longer, interspace between first two teeth broad, second tooth contiguous with third tooth (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6C</figureCitation>
). Clypeus slightly convex medially, about 1.6
<normalizedToken originalValue="×">x</normalizedToken>
as broad as long. Supraclypeal area slightly convex medially. Scape slender, about 3.2
<normalizedToken originalValue="×">x</normalizedToken>
as long as broad, pedicel approximately 1.7
<normalizedToken originalValue="×">x</normalizedToken>
as long as broad and about 1.6
<normalizedToken originalValue="×">x</normalizedToken>
length of F1, F1 broader than long and approximately 1.3
<normalizedToken originalValue="×">x</normalizedToken>
length of F2, F3-F9 gradually increasing in length, F3-F5, F6-F7, and F8-F9 subequal in length, F10 longest flagellomere, approximately 1.5
<normalizedToken originalValue="×">x</normalizedToken>
as long as broad. Mesosoma approximately 1.2
<normalizedToken originalValue="×">x</normalizedToken>
as broad as long; mesoscutellum strongly convex, mediolongitudinal depression in apical half, giving bigibbous appearance (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6D</figureCitation>
). Forewing with two submarginal cells, first submarginal cell broader than second submarginal cell. Prolateral surfaces of metatibia and metabasitarsus each with a longitudinal carina (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6F</figureCitation>
). Metapretarsus with arolium (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6G</figureCitation>
). Metasoma faintly cordate (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6B</figureCitation>
) owing to concave anterior surface of T1 in dorsal view (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6A, B</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171" start="Figure 6" startId="F6">
<paragraph pageId="0" pageNumber="171">
<emphasis bold="true" pageId="0" pageNumber="171">Figure 6.</emphasis>
<taxonomicName authorityName="Tran, Engel &amp; Nguyen" authorityYear="2023" class="Insecta" family="Megachilidae" genus="Anthidiellum" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Anthidiellum (Pycnanthidium) flavaxilla" order="Hymenoptera" pageId="0" pageNumber="171" phylum="Arthropoda" rank="species" species="flavaxilla" subGenus="Pycnanthidium">Anthidiellum (Pycnanthidium) flavaxilla</taxonomicName>
Tran, Engel &amp; Nguyen, sp. nov., holotype, female
<emphasis bold="true" pageId="0" pageNumber="171">A</emphasis>
dorsolateral oblique habitus
<emphasis bold="true" pageId="0" pageNumber="171">B</emphasis>
dorsal habitus
<emphasis bold="true" pageId="0" pageNumber="171">C</emphasis>
facial view
<emphasis bold="true" pageId="0" pageNumber="171">D</emphasis>
mesosoma in dorsal view
<emphasis bold="true" pageId="0" pageNumber="171">E</emphasis>
head and mesosoma in profile, red arrow indicating omaular carina
<emphasis bold="true" pageId="0" pageNumber="171">F</emphasis>
prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae
<emphasis bold="true" pageId="0" pageNumber="171">G</emphasis>
metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (
<emphasis bold="true" pageId="0" pageNumber="171">A, B, D, E</emphasis>
); 0.5 mm (
<emphasis bold="true" pageId="0" pageNumber="171">C, F, G</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="171">
<emphasis bold="true" pageId="0" pageNumber="171">
<emphasis italics="true" pageId="0" pageNumber="171">Sculpturing and texture</emphasis>
.
</emphasis>
Clypeus and paraocular area extending from base to antennal torulus with wrinkled punctures. Supraclypeal area and frons with coarse, dense punctures. Vertex with round punctures, punctures sparser than on supraclypeal area and frons. Mesoscutum with round, contiguous punctures, except polished and impunctate on short anterior-facing surface at medioapical margin; mesoscutellum with small, round, contiguous punctures (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6D</figureCitation>
). Metasomal T1-T3 with small, round, dense punctures; T4-T5 with small, round punctures, punctures sparser than those on T1-T3; T6 with wrinkled punctures.
</paragraph>
<paragraph pageId="0" pageNumber="171">
<emphasis bold="true" pageId="0" pageNumber="171">
<emphasis italics="true" pageId="0" pageNumber="171">Color</emphasis>
.
</emphasis>
Body black except as follows: clypeus yellow except black on apical margin; supraclypeal area with yellow laterally bordering subantennal sulci; paraocular area with yellow marking extending along inner margin to about lower tangent of antennal toruli. Frons with small yellow drop above medially (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6C</figureCitation>
). Gena with yellow mark above near vertex and posterior to upper margin of compound eye (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6E</figureCitation>
). Pronotal lobe yellow except small, round, dull spot medially, mesoscutum with thin, transverse, yellow markings latero-anteriorly on anterior border; axilla yellow (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6A</figureCitation>
). Prolateral surface of protibia yellow to yellowish brown. Metasomal T1 with yellow markings laterally, T3 basally yellow except broadly interrupted medially, T4-T5 with basal yellow bands, T6 yellow medially (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Anthidiellum (Pycnanthidium) flavaxilla Tran, Engel &amp; Nguyen, sp. nov., holotype, female A dorsolateral oblique habitus B dorsal habitus C facial view D mesosoma in dorsal view E head and mesosoma in profile, red arrow indicating omaular carina F prolateral surfaces of metatibia and metatarsus, with red arrows indicating longitudinal carinae G metatarsus and metapretarsus, red arrow indicating metapretarsal arolium. Scale bars: 1 mm (A, B, D, E); 0.5 mm (C, F, G)." figureDoi="10.3897/zookeys.1144.98644.figure6" httpUri="https://binary.pensoft.net/fig/803876" pageId="0" pageNumber="171">6B</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="171">
<emphasis bold="true" pageId="0" pageNumber="171">
<emphasis italics="true" pageId="0" pageNumber="171">Pubescence</emphasis>
.
</emphasis>
Apical margin of clypeus with sparse, erect, yellow setae. Clypeus, supraclypeal area, and paraocular area with short, sparse, white to yellowish setae. Antennal scape with short, yellowish setae; above antennal toruli with long, dense, plumose tuft of diffuse white setae. Frons and vertex with short, sparse, yellowish setae. Anterior, posterior, and apical margin of mandible with short yellowish setae intermixed with some longer setae. Mesoscutum and mesoscutellum dorsally with short yellowish setae; mesoscutellum ventro-apically with longer, erect, yellow setae; propodeum with long, plumose, dense, yellowish setae. Prolateral surfaces of basitarsi and tarsi with dense, erect, yellowish setae; retrolateral surfaces of these same podites with tawny yellow setae. Metasomal T1 and T3-T5 with short, sparse, yellowish setae; T2 almost bare except some short yellowish setae laterally; T6 with short yellowish setae except dense, yellowish setae on apical margin; S2-S5 with long, dense, tawny yellow scopal setae.
</paragraph>
<paragraph pageId="0" pageNumber="171">♂: Latet.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="171" type="etymology">
<paragraph pageId="0" pageNumber="171">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="171">
The specific epithet is taken from the Latin adjective
<emphasis italics="true" pageId="0" pageNumber="171">
<normalizedToken originalValue="flāvus">flavus</normalizedToken>
</emphasis>
(meaning,
<normalizedToken originalValue="“yellow”">&quot;yellow&quot;</normalizedToken>
) and the noun
<emphasis italics="true" pageId="0" pageNumber="171">axilla</emphasis>
(meaning,
<normalizedToken originalValue="“armpit”">&quot;armpit&quot;</normalizedToken>
or
<normalizedToken originalValue="“side”">&quot;side&quot;</normalizedToken>
), and refers to the notable yellow markings on the axillae.
</paragraph>
</subSubSection>
</treatment>
</document>