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130 lines
14 KiB
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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.394.6446" ID-GBIF-Dataset="8534078f-1f99-4b9e-866b-80609e341172" ID-PMC="PMC3978267" ID-Pensoft-Pub="1313-2970-394-1" ID-PubMed="24715784" ID-ZBK="32F5211696ED46C68BF9BE59C09F0B1A" ModsDocAuthor="" ModsDocDate="2014" ModsDocID="1313-2970-394-1" ModsDocOrigin="ZooKeys 394" ModsDocTitle="A revision of the ant genus Mystrium in the Malagasy region with description of six new species and remarks on Amblyopone and Stigmatomma (Hymenoptera, Formicidae, Amblyoponinae)" checkinTime="1451246058701" checkinUser="pensoft" docAuthor="Yoshimura, Masashi & Fisher, Brian L." docDate="2014" docId="D1D98721A4016561D5DC4588757E2B1A" docLanguage="en" docName="ZooKeys 394: 1-99" docOrigin="ZooKeys 394" docSource="http://dx.doi.org/10.3897/zookeys.394.6446" docTitle="Mystrium labyrinth Yoshimura & Fisher, sp. n." docType="treatment" docUuid="0E7BCDE0-AF81-4120-9FC0-C1287C4BED46" docUuidSource="ZooBank" docVersion="4" lastPageNumber="34" masterDocId="FF955F09FFA4FFC3FFC5FFA24014FFB0" masterDocTitle="A revision of the ant genus Mystrium in the Malagasy region with description of six new species and remarks on Amblyopone and Stigmatomma (Hymenoptera, Formicidae, Amblyoponinae)" masterLastPageNumber="99" masterPageNumber="1" pageNumber="32" updateTime="1668158113736" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>A revision of the ant genus Mystrium in the Malagasy region with description of six new species and remarks on Amblyopone and Stigmatomma (Hymenoptera, Formicidae, Amblyoponinae)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Yoshimura, Masashi</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Fisher, Brian L.</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2014</mods:date>
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<mods:detail type="volume">
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<mods:number>394</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>99</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.394.6446</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.394.6446</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-394-1</mods:identifier>
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<mods:identifier type="ZBK">32F5211696ED46C68BF9BE59C09F0B1A</mods:identifier>
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<mods:identifier type="ZooBank">32F5211696ED46C68BF9BE59C09F0B1A</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152052258" LSID="urn:lsid:zoobank.org:act:0E7BCDE0-AF81-4120-9FC0-C1287C4BED46" httpUri="http://treatment.plazi.org/id/D1D98721A4016561D5DC4588757E2B1A" lastPageId="33" lastPageNumber="34" pageId="31" pageNumber="32">
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<subSubSection pageId="31" pageNumber="32" type="nomenclature">
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<paragraph pageId="31" pageNumber="32">
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<taxonomicName LSID="http://zoobank.org/0E7BCDE0-AF81-4120-9FC0-C1287C4BED46" authority="Yoshimura & Fisher" class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium labyrinth" order="Hymenoptera" pageId="31" pageNumber="32" phylum="Arthropoda" rank="species" species="labyrinth">Mystrium labyrinth Yoshimura & Fisher</taxonomicName>
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<taxonomicNameLabel pageId="31" pageNumber="32">sp. n.</taxonomicNameLabel>
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Figs 10B, 10D, 14B, 33E, 34E, 35C, 36B, 36D, 36F, 42B
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</paragraph>
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</subSubSection>
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<subSubSection pageId="31" pageNumber="32" type="holotype">
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<paragraph pageId="31" pageNumber="32">Holotype.</paragraph>
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<paragraph pageId="31" pageNumber="32">Worker: CASENT0003281, BLF00976, MADAGASCAR, Toliara, 5 km N Isaka-Invondro (-24.75°, 46.8°), 350 m alt., 12.xi.1992, B.L.Fisher leg. [CASC].</paragraph>
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</subSubSection>
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<subSubSection pageId="32" pageNumber="33" type="worker">
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<paragraph pageId="32" pageNumber="33">
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<pageBreakToken pageId="32" pageNumber="33" start="start">Worker</pageBreakToken>
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.
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</paragraph>
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<paragraph pageId="32" pageNumber="33">Description. Measurements: holotype. HL 1.73, HW 1.76, SL 1.08, ML 1.77, HD 1.03, WL 1.96, PnW 1.01, PpW 0.84, PtW 0.90, PtL 0.51, CI 101.7, SI 61.2, MI 100.5, PpI 83.0, PtI 176.1.</paragraph>
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<paragraph pageId="32" pageNumber="33">HL 1.67-1.79, HW 1.72-1.84, SL 1.05-1.09, ML 1.70-1.76, HD 1.03-1.09, WL 1.90-2.02, PnW 1.02-1.08, PpW 0.81-0.87, PtW 0.82-0.95, PtL 0.45-0.52, CI 102.0-102.8, SI 58.0-61.1, MI 92.2-99.4, PpI 79.0-82.7, PtI 180.4-183.8 (3 specimens measured).</paragraph>
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<paragraph pageId="32" pageNumber="33">
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Posterolateral corner of head moderately expanding posteriorly. Posterior face of vertex forming almost right angle with its dorsal face on median line of head, so that declivity of vertex on lateral part as steep as that on median part. Ventral half of vertex sculptured. Eye relatively larger than that of
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium barrybressleri" order="Hymenoptera" pageId="32" pageNumber="33" phylum="Arthropoda" rank="species" species="barrybressleri">Mystrium barrybressleri</taxonomicName>
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. Anterior margin of clypeus convex with long conical setae, of which median pair larger than adjacent pair. Genal tooth of head relatively long, as long as lateral lobe of clypeus. Masticatory margin of mandible in full-face view slightly visible on its basal half, invisible on its distal half. Width of dorsal surface of mandible almost identical from mandibular shaft to distal portion. Second maxillary palpomere shorter than third. First flagellomere (third antennal segment) as long as pedicel (second antennal segment). Central part of pronotal dorsum and lateral surface of pronotum strongly and regularly reticulate. Mesonotum often not differentiated and indistinct from propodeum in dorsal view, its length as long as that of propodeum. Metanotal groove indistinct in lateral view, but mesonotum slightly higher than pronotum. Short, but distinct ridge present on dorsal edge of metapleural gland bulla. Petiole wide in dorsal view, but narrower than that of
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium barrybressleri" order="Hymenoptera" pageId="32" pageNumber="33" phylum="Arthropoda" rank="species" species="barrybressleri">Mystrium barrybressleri</taxonomicName>
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(PtI<185).
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</paragraph>
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<paragraph pageId="32" pageNumber="33">Body color reddish brown to black.</paragraph>
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</subSubSection>
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<subSubSection lastPageId="33" lastPageNumber="34" pageId="32" pageNumber="33" type="queen">
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<paragraph pageId="32" pageNumber="33">Queen.</paragraph>
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<paragraph pageId="32" pageNumber="33">Description. Measurements: HL 1.65, HW 1.69, SL 0.99, ML 1.48, HD 1.10, WL 2.33, MnW 1.27, PtW 1.08, PtL 0.51, CI 102.5, SI 58.5, MI 87.6, MnI 74.8, PtI 212.2 (one specimens measured).</paragraph>
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<paragraph pageId="32" pageNumber="33">
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Wings present, well developed. Wing sclerites fully developed even if wings have dropped off. Posterolateral corner of head moderately expanding posteriorly; expansion weaker than that of workers. Posterior face of vertex forming almost right angle with its dorsal face on median line of head, so that declivity of vertex on lateral part as steep as that on median part. Ventral half of vertex sculptured. Eye well developed. Both anterior and lateral ocelli clearly present, median portion of lateral ocelli and posterior portion of anterior ocellus edged by blackish pigment. Anterior margin of clypeus convex, with long conical setae, of which median pair larger than adjacent pair. Genal tooth of head distinctly developed, reaching slightly posterior of lateral lobe of clypeus. Masticatory margin of mandible almost invisible in full-face view, and dorsal surface on distal portion as wide as that on mandibular shaft. Spatulate seta present on basal side of each basal denticle on masticatory margin of mandible. First flagellar segment on antenna as long as pedicel. Setae on pronotum distinctly spatulate, widened distally. Propodeal declivity in lateral view slightly convex on dorsal part of metanotal gland bulla, making blunt angle with its dorsal margin. Petiole relatively long in dorsal view, 0.5
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<normalizedToken originalValue="×">x</normalizedToken>
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length of abdominal segment III.
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</paragraph>
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<paragraph pageId="33" pageNumber="34">
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<pageBreakToken pageId="33" pageNumber="34" start="start">Body</pageBreakToken>
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color blackish brown.
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</paragraph>
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<paragraph pageId="33" pageNumber="34">Male unknown.</paragraph>
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</subSubSection>
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<subSubSection pageId="33" pageNumber="34" type="etymology">
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<paragraph pageId="33" pageNumber="34">Etymology.</paragraph>
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<paragraph pageId="33" pageNumber="34">This species name is the English word labyrinth, inspired by the strong reticulation covering the body surface of the new species. The species epithet is a noun, and thus invariant.</paragraph>
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</subSubSection>
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<subSubSection pageId="33" pageNumber="34" type="distribution">
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<paragraph pageId="33" pageNumber="34">Distribution.</paragraph>
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<paragraph pageId="33" pageNumber="34">MADAGASCAR: as in Figure 42B.</paragraph>
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</subSubSection>
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<subSubSection pageId="33" pageNumber="34" type="additional material examined">
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<paragraph pageId="33" pageNumber="34">Additional material examined.</paragraph>
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<paragraph pageId="33" pageNumber="34">
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In addition to the type material, specimens from the following localities were examined in this study: MADAGASCAR. Diego-Suarez. Parc National Montagne
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<normalizedToken originalValue="d’Ambre">d'Ambre</normalizedToken>
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(-12.51444°, 49.18139°), rainforest, 960 m alt.; Antsiranana. 6.5 km SSW Befingotra,
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<normalizedToken originalValue="Rés">Res</normalizedToken>
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. Anjanaharibe-Sud (-14.75°, 49.5°), rainforest, 875 m alt.; Toamasina. 6.9 km NE Ambanizana, Ambohitsitondroina (-15.56667°, 50°), rainforest, 825 m alt.; Toliara. 5 km N Isaka-Invondro (-24.75°, 46.8°), rainforest, 350 m alt.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="33" pageNumber="34" type="remarks">
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<paragraph pageId="33" pageNumber="34">Remarks.</paragraph>
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<paragraph pageId="33" pageNumber="34">
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium labyrinth" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="species" species="labyrinth">Mystrium labyrinth</taxonomicName>
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females can be distinguished easily from the other
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="genus">Mystrium</taxonomicName>
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females in the Malagasy region by a combination of the following characters: the pronotal dorsum covered with strong regular reticulation (as in Fig. 13A); the second maxillary palpomere shorter than the third (as in Fig. 13C); the long genal tooth of head nearly reaching anterior end of the lateral lobe of the clypeus (Fig. 14B); and the first flagellomere (third antennal segment) as long as the pedicel (second antennal segment) (Fig. 10D). The worker of
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium labyrinth" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="species" species="labyrinth">Mystrium labyrinth</taxonomicName>
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is similar to that of
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium silvestrii" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="species" species="silvestrii">Mystrium silvestrii</taxonomicName>
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; however,
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium labyrinth" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="species" species="labyrinth">Mystrium labyrinth</taxonomicName>
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can be distinguished from
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium silvestrii" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="species" species="silvestrii">Mystrium silvestrii</taxonomicName>
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by an anterior clypeal margin with long, well-developed conical setae (weak in
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium silvestrii" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="species" species="silvestrii">Mystrium silvestrii</taxonomicName>
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and
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="genus">Mystrium</taxonomicName>
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mz01), and a moderately long petiole (Fig. 35C) (short and wide in
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium silvestrii" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="species" species="silvestrii">Mystrium silvestrii</taxonomicName>
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as in
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<taxonomicName class="Insecta" family="Formicidae" genus="Mystrium" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mystrium barrybressleri" order="Hymenoptera" pageId="33" pageNumber="34" phylum="Arthropoda" rank="species" species="barrybressleri">Mystrium barrybressleri</taxonomicName>
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).
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</paragraph>
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<paragraph pageId="33" pageNumber="34">The queen described here is not associated with workers from the same colony (collected alone from -12.51444°, 49.18139°); however, the similarities between workers and queens are sufficient to determine their relationship. The male of this species is unknown.</paragraph>
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</subSubSection>
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</treatment>
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</document> |