<documentid="D44BDA3E5F23F72E29989457B470EE82"ID-CLB-Dataset="31905"ID-DOI="http://dx.doi.org/10.3897/zookeys.705.10296"ID-GBIF-Dataset="d285a536-7cca-49ce-b1ef-b897db42f47a"ID-PMC="PMC5674053"ID-Pensoft-Pub="1313-2970-705-81"ID-PubMed="29118613"ID-ZooBank="BF7F323D795D49BB9D5BC0B8320D6A13"ModsDocAuthor=""ModsDocDate="2017"ModsDocID="1313-2970-705-81"ModsDocOrigin="ZooKeys 705"ModsDocTitle="A new species of Stigmatomma from Taiwan (Hymenoptera, Formicidae, Amblyoponinae)"checkinTime="1507095350479"checkinUser="pensoft"docAuthor="Hsu, Feng-Chuan, Esteves, Flavia A., Chou, Lien-Siang & Lin, Chung-Chi"docDate="2017"docId="E4FAACBA479B0F012D1076AC40D14AC2"docLanguage="en"docName="ZooKeys 705: 81-94"docOrigin="ZooKeys 705"docSource="http://dx.doi.org/10.3897/zookeys.705.10296"docTitle="Stigmatomma luyiae Hsu, Esteves, Chou & Lin, 2017, sp. n."docType="treatment"docUuid="AD739019-1E86-4A82-8516-229B4DECF8FD"docUuidSource="ZooBank"docVersion="8"lastPageNumber="85"masterDocId="F06AB3701A64FFEB27339103AC3CFFD9"masterDocTitle="A new species of Stigmatomma from Taiwan (Hymenoptera, Formicidae, Amblyoponinae)"masterLastPageNumber="94"masterPageNumber="81"pageNumber="81"updateTime="1701381076415"updateUser="ExternalLinkService">
<paragraphid="C24E4A5042795C80C1E2692DBF8C5D49"pageId="0"pageNumber="81">Holotype: worker, pinned. Original label: "TAIWAN: Nantou County, LFDP, 10.i.2015, F. C. Hsu col. CASENT0922349" Deposited at NMNS.</paragraph>
<paragraphid="BF1DD7C3111489D989F5C610D1231702"pageId="0"pageNumber="81">Paratype: worker, pinned. Original label: "TAIWAN: Nantou County, LFDP, 10.i.2015, F. C. Hsu col. ANTWEB1032000" Deposited at TARI.</paragraph>
<paragraphid="F65079560CCE3A7767B3ADC68B6795C1"pageId="1"pageNumber="82">6. Anterior portion of the median area of the clypeus with seven stout, acuminate flattened-apex setae arranged in a single transversal row.</paragraph>
<paragraphid="557EC8101AAFA0DEBE80296E464D0A76"pageId="1"pageNumber="82">7. Frontal lobes closely approximated; median area of the clypeus extending posteriorly as a narrow longitudinal strip between the antennal sockets.</paragraph>
<paragraphid="7E5BAA5AFFAE152871580715968E12B6"pageId="1"pageNumber="82">9. Genal teeth present, but minute.</paragraph>
<paragraphid="02EAA20525E650B821C70BCF58360479"pageId="1"pageNumber="82">10. Dorsal face of the head densely costate-foveolate, slightly catenated.</paragraph>
<paragraphid="95E6F4A05120046E3948408817B71306"pageId="1"pageNumber="82">11. Head quadrate (CI: 100).</paragraph>
<paragraphid="B8E28B19BFC78B7D2972B4762B3D2D2B"pageId="1"pageNumber="82">12. Mesepisternum divided into anepisternum and katepisternum.</paragraph>
<paragraphid="88A058648CE82BE156AFDE0EEE381E3D"pageId="1"pageNumber="82">13. Lamella absent on the ventral margin of the calcar of strigil.</paragraph>
<paragraphid="D199258FD9C4DD1AFE67B67DF4ACE96D"pageId="1"pageNumber="82">14. *Anterior face of mesobasitarsus with round sulcus filled with microvilli-like projections.</paragraph>
<paragraphid="9A0CB8EDC127784E3F2EF0CBFCD0D6F4"pageId="1"pageNumber="82">15. One metatibial spur.</paragraph>
<paragraphid="8A8D696B0D8572D1CBFC7DA6B7E77432"pageId="1"pageNumber="82">16. Sulcus absent on the anterior face of the metabasitarsus.</paragraph>
<paragraphid="DE1F6F08EAD38406135FCCC2C35F07A3"pageId="1"pageNumber="82">17. Fenestra absent on the subpetiolar process.</paragraph>
<paragraphid="C2C781720D2FD7B6E3B97CF36B3939C0"pageId="1"pageNumber="82">18. Stout spiniform setae absent on the hypopygium.</paragraph>
<paragraphid="1FF2E04D4ACA485BE13579CBF95CE1F5"pageId="1"pageNumber="82">Holotype measurements (Figure 1): TL: 2.45 mm, HL: 0.5 mm, HW: 0.5 mm, HW2: 0.47 mm; SL: 0.3 mm, ML: 0.5 mm, WL: 0.6 mm, PPW: 0.24 mm, PnW: 0.31 mm, PtW: 0.24 mm, PtL: 0.16 mm, CI: 100, MI: 100, and SI: 60.</paragraph>
<paragraphid="5791A798B4A7DDBA22E3EA507CCCC7AD"pageId="1"pageNumber="82">Paratype measurements: TL: 2.43 mm, HL: 0.48 mm, HW: 0.48 mm, HW2: 0.45 mm, SL: 0.29 mm, ML: 0.48 mm, WL: 0.6 mm, PPW: 0.22 mm, PnW: 0.32 mm, PtW: 0.24 mm, PtL: 0.16 mm, CI: 100, MI: 100, and SI: 60.</paragraph>
Head. Dorsal face of the head quadrate (CI: 100), bearing longer erect to suberect hairs, and numerous shorter suberect to subdecumbent pilosity; sculpture densely costate-foveolate, slightly catenated (Figs 1A, 2A). Posterior margin of the head slightly concave in full-face view. Antenna with eleven antennomeres, bearing abundant erect to subdecumbent pilosity (Figs 1A, 2
). Frontal lobes closely approximated: median area of the clypeus extending posteriorly as a narrow longitudinal strip between the antennal sockets (Figs 1A, 2
Figs 2C, D). Genal teeth present, but minute. Anterior clypeal margin flat; modified setae or tubercular cuticular projections absent (Figure 2B). Anterior portion of the median area of the clypeus with seven stout, acuminate flattened-apex setae arranged in a single transversal row; longer median seta; each seta rises from a minute tubercle-like cuticular projection (Figure 2B). Mandibles elongated, falciform; baso-masticatory margin with a single row of five teeth (Figs 1A, 2A). Mandibular teeth arrangement, from base to apex: smaller blunt tooth; two longer jigsaw-tab-shaped teeth; long diastema; indistinct, acute pre-apical tooth, immediately followed by an acute apical tooth (Figs 1A, 2A, C). Dorsal face of the mandibles costate (Figs 1A, 2A). Mandibles with erect to subdecumbent pilosity (Figs 1A, 2A). Mandibles as long as the head (MI: 100).
sp. n. (CASENT0922349); worker. Images by FAE; available at AntWeb.org. A Full-face view B Anterior margin of clypeus, dorsal view C Mandibles, anterior view D Head, lateral view.
<paragraphid="3ACE919B13A21B2D39E3EC312A7664F5"pageId="2"pageNumber="83">Mesosoma. Mesepisternum divided into anepisternum and katepisternum (Figs 1B, 3A). Metanotal suture present (Figure 1D). In profile, lateral margins of propodeal declivitous face are not continuous: ventral portion is raised (Figs 1B, 3A). In the dorsal view, pronotum, mesonotum, and propodeum strigate-rugulose; declivitous face of the propodeum weakly strigate-rugulose. Posterolateral portion of the pronotum, mesepisternum, and posterolateral face of propodeum areolate; remainder of the lateral face of the propodeum strigate-rugulose-somewhat areolate; metapleuron imbricate (Figure 3A). Mesosoma covered with erect to subdecumbent pilosity (Figure 3A).</paragraph>
sp. n. (CASENT0922349); worker. Images by FAE; available at AntWeb.org. A Mesosoma, lateral view B Petiole, lateral view C Petiole, ventral view D Apex of the gaster, lateral view.
. Lamella absent on the ventral margin of the calcar of strigil (Fig. 4A, B). Anterior face of calcar of strigil with squamiform microtrichia; posterior face with lanceolate microtrichia (Fig. 4
). Multiple spatulate, carinate setae on the anterior face of protibial apex, next to calcar of strigil (Figure 4A). Multiple spatulate, carinate setae on the anterior face of probasitarsus (Figure 4A). Mesotibial spur absent (Figure 4C). Anterior face of mesobasitarsus with round sulcus filled with microvilli-like projections (Figure 4D). One metatibial spur; pectinate; anterior and posterior faces glabrous (Fig. 4
sp. n. (CASENT0922349); worker. Images by FAE; available at AntWeb.org. A Foreleg, anterior face. Close-up of the protibial apex, including the calcar of strigil, and probasitarsus B Foreleg, posterior face. Close-up of the protibial apex, including the calcar of strigil, and probasitarsus C Midleg, ventral face. Close-up of the mesotibial apex D Midleg, anterior face. Close-up of the mesobasitarsus, which bears a round sulcus filled with microvilli-like projections E Hindleg, anterior face. Close-up of the metatibial apex, including the metatibial spur, and metabasitarsus F Hindleg, posterior face. Close-up of the metatibial apex, including the metatibial spur, and basal portion of metabasitarsus.
<paragraphid="A5C7FE780076A0FDD8B07AB86A9CB517"pageId="3"pageNumber="84">Color. Head color orange-brown; body yellow-brown; apex of gaster and appendages yellowish (Figure 1).</paragraph>
<paragraphid="A4109A5821EBE5E328F2015B612C745F"pageId="4"pageNumber="85">Figure 5. Photograph of the subtropical evergreen broad-leaved forest in the Lienhuachih Forest Dynamics Plot, Nantou County, Taiwan.</paragraph>
is easily distinguished from most of its congeners in Asia due to its mandibles, which present only a single row of teeth instead of two rows. The only
<bibRefCitationid="83CB2813553C371E9A00D9FE7F6D45AD"author="Eguchi, K"journalOrPublisher="Zootaxa"pageId="6"pageNumber="87"pagination="077 - 086"title="Redefinition of the genus Bannapone and description of B. cryptica sp. nov. (Hymenoptera: Formicidae: Amblyoponinae)."url="https://doi.org/10.11646/zootaxa.4013.1.5"volume="4013"year="2015">Eguchi et al., 2015</bibRefCitation>
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are the presence/absence of cuticular projections and modified setae on the anterior margin of the clypeus, head shape, and relative size of the mandibles. In
, the anterior clypeal margin is flat and bears neither tubercular projections nor stout setae. Instead, stout, acuminate flattened-apex setae rise from the anterior portion of the
, the anterior margin of the clypeus presents tubercle-like cuticular projections, and each of which bears a stout, conic seta (Figure 8A); the head is rectangular (CI: 84;
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<bibRefCitationid="DFC5CF05DE9198151D70944C513B3D17"author="Xu, Z-H"journalOrPublisher="Zoological Research"pageId="7"pageNumber="88"pagination="297 - 302"title="Two new genera of ant subfamilies Dorylinae and Ponerinae (Hymenoptera: Formicidae) from Yunnan, China."volume="21"year="2000">Xu 2000</bibRefCitation>