288 lines
26 KiB
XML
288 lines
26 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.225.3721" ID-GBIF-Dataset="1301ded3-c86d-4e07-aae6-dd84e348cd25" ID-PMC="PMC3487652" ID-Pensoft-Pub="1313-2970-225-1" ID-PubMed="23166461" ModsDocAuthor="" ModsDocDate="2012" ModsDocID="1313-2970-225-1" ModsDocOrigin="ZooKeys 225" ModsDocTitle="A revision of the genus Planinasus Cresson (Diptera, Periscelididae)" checkinTime="1451248711591" checkinUser="pensoft" docAuthor="Mathis, Wayne N., Rung, Alessandra & Kotrba, Marion" docDate="2012" docId="96D6397C27D925D40EB2F9E9EA3B8E87" docLanguage="en" docName="ZooKeys 225: 1-83" docOrigin="ZooKeys 225" docSource="http://dx.doi.org/10.3897/zookeys.225.3721" docTitle="Planinasus neotropicus Mathis, Rung & Kotrba, 2012, sp. n." docType="treatment" docVersion="4" lastPageNumber="23" masterDocId="5C00FF9EFFDAFF805469564E9829FF97" masterDocTitle="A revision of the genus Planinasus Cresson (Diptera, Periscelididae)" masterLastPageNumber="83" masterPageNumber="1" pageNumber="19" updateTime="1668154510379" 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 genus Planinasus Cresson (Diptera, Periscelididae)</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>Mathis, Wayne N.</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>Rung, Alessandra</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>Kotrba, Marion</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>2012</mods:date>
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<mods:detail type="volume">
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<mods:number>225</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>83</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.225.3721</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.225.3721</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-225-1</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152037208" LSID="urn:lsid:zoobank.org:act:061DBE88-5E6E-4850-9D95-C22038BD31C6" httpUri="http://treatment.plazi.org/id/96D6397C27D925D40EB2F9E9EA3B8E87" lastPageId="22" lastPageNumber="23" pageId="18" pageNumber="19">
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<subSubSection pageId="18" pageNumber="19" type="nomenclature">
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<paragraph pageId="18" pageNumber="19">
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3.
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<taxonomicName LSID="urn:lsid:zoobank.org:act:061DBE88-5E6E-4850-9D95-C22038BD31C6" class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus neotropicus" order="Diptera" pageId="18" pageNumber="19" phylum="Arthropoda" rank="species" species="neotropicus">Planinasus neotropicus</taxonomicName>
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<taxonomicNameLabel pageId="18" pageNumber="19">sp. n.</taxonomicNameLabel>
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Figures 15-19
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="19" lastPageNumber="20" pageId="18" pageNumber="19" type="description">
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<paragraph pageId="18" pageNumber="19">Description.</paragraph>
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<paragraph pageId="18" pageNumber="19">Small to moderately small flies, body length 1.80-2.55 mm.</paragraph>
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<paragraph lastPageId="19" lastPageNumber="20" pageId="18" pageNumber="19">
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Head: Frons mostly bare, shiny, except for densely microtomentose, velvety-appearing, anterolateral angles; frons slightly wider than long, frontal ratio averaging 0.65; interfrontal seta short, about 1/2 length of lateral vertical seta. Antenna unicolor
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<pageBreakToken pageId="19" pageNumber="20" start="start">ous</pageBreakToken>
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, blackish brown; pedicel with ventral projection short, not extended anteriorly much beyond dorsal margin; basal flagellomere short, width about 2/3 length; arista bearing 8-9 dorsal rays, 3-4 ventral rays. Face comparatively narrow; facial ratio averaging 0.25; dorsal half of face shield-like, mostly bare, roughly pentagonal, with yellowish to slightly bluish reflections; facial setae more or less in 2 transverse rows, dorsal row with 4 setae, 2 dorsoclinate, 2 ventroclinate; ventral facial row with 4 ventroclinate setae. Clypeus and palpus blackish brown.
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</paragraph>
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<paragraph pageId="19" pageNumber="20">Thorax: Generally dark brown but with some paler, mostly yellowish areas along margins of sclerites; mesonotum moderately invested with whitish gray microtomentum, appearing dull medially, becoming subshiny, less microtomentose laterally; postpronotum yellowish; area from postpronotum and through notopleuron mostly bare, shiny; anepisternum moderately invested with very fine microtomentum, mostly appearing dull; other pleural areas less densely invested. Wing very faintly infumate, without pattern. Coxae whitish yellow; femora whitish yellow basally, distal 1/2-1/3 dark brown; forefemur lacking a preapical annulus; basal 1/3 of tibiae dark brown, thereafter gradually becoming yellowish; tarsi yellowish, apical 2-3 tarsomeres darker; forefemur bearing 2 setae at apical 1/3 along posteroventral surface.</paragraph>
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<paragraph pageId="19" pageNumber="20">Abdomen: Uniformly blackish brown, mostly subshiny, moderately invested with microtomentum. Male abdomen: Tergites 1+2-6 well developed, lengths of tergites 3-6 subequal; sternite 3 only slightly wider than long, posterior margin sinuous with a medial, moderately broad, rounded projection; sternite 4 with width over twice length, sclerotized portion deeply emarginate, widely W-shaped with broad portion membranous posteriorly; sternite 5 with width over twice length, anterior margin with shallow, medial depression, lateral margins becoming slighter wider posteriorly, posterior margin shallowly emarginate, posterolateral corners rounded; sternite 6 apparently absent; sternite 7 well developed but narrow, forming an annulus with tergite 7. Male terminalia (Figs 15-18): Epandrium in lateral view (Fig. 15) narrowly trapezoidal, dorsal margin truncate, straight; surstylar length slightly less than half length of epandrium, extended from ventral margin of epandrium, in nearly vertical alignment with epandrium, in lateral view (Figs 15-16) digitiform on apical 2/3, with anterior and posterior basal margins bulged, apex bluntly rounded to truncate, bearing 1 large, sub-basal setula; hypandrium in ventral view (Fig. 16) V-shaped with anterior, angulate portion of V thickened; postgonite in ventral view (Fig. 16) convoluted, with robustly developed lobe expanded apically, invested with numerous setulae, lobe in lateral view (Fig. 18) irregularly clavate with uneven expansion, apical portion bearing approximately 20 setulae; phallus large, in ventral view (Fig. 16) complex, partially sclerotized; phallapodeme in lateral and ventral views (Figs 16, 18) elongate, tubular, truncate apically; ejaculatory apodeme in lateral view (Fig. 17) long, length subequal to that of phallapodeme, clavate, apex only moderately expanded.</paragraph>
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<caption pageId="19" pageNumber="20">
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<paragraph pageId="19" pageNumber="20">
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Figures 15-18. Illustrations of
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus neotropicus" order="Diptera" pageId="19" pageNumber="20" phylum="Arthropoda" rank="species" species="neotropicus">Planinasus neotropicus</taxonomicName>
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sp. n. (male). 15 epandrium, surstylus, hypandrium, lateral view 16 structures of internal male terminalia, ventral view 17 ejaculatory apodeme, lateral view 18 structures of internal male terminalia, lateral view. Scale bar = 0.1 mm.
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</paragraph>
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</caption>
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<caption pageId="19" pageNumber="20">
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<paragraph pageId="19" pageNumber="20">
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Figure 19. Distribution of
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus neotropicus" order="Diptera" pageId="19" pageNumber="20" phylum="Arthropoda" rank="species" species="neotropicus">Planinasus neotropicus</taxonomicName>
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sp. n.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection lastPageId="22" lastPageNumber="23" pageId="19" pageNumber="20" type="type material">
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<paragraph pageId="19" pageNumber="20">Type material.</paragraph>
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<paragraph lastPageId="20" lastPageNumber="21" pageId="19" pageNumber="20">
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The holotype male is labeled "PANAMA: CANAL ZONE Barro Colorado Isl. 28. June. [day and month handwritten] 1978 N.E.Woodley/Malaise trap/USNM ENT 00118285 [plastic bar code label]/HOLOTYPE ♂
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus neotropicus" order="Diptera" pageId="19" pageNumber="20" phylum="Arthropoda" rank="species" species="neotropicus">Planinasus neotropicus</taxonomicName>
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Mathis & Rung USNM [red]." The holotype is double mounted (minuten
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<pageBreakToken pageId="20" pageNumber="21" start="start">wired</pageBreakToken>
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to a larger pin), is in good condition (some setae missing), and is deposited in the USNM. Paratypes are as follows: PANAMA. Balboa (
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<geoCoordinate direction="north" orientation="latitude" precision="925" value="8.95">08°57'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="925" value="-79.566666">79°34'W</geoCoordinate>
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), Feb 1958, M. R. Wheeler (1♂, 1♀; USNM). Fort Davis (
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="9.288333">09°17.3'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-79.90667">79°54.4'W</geoCoordinate>
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), 28 Aug 1952, F. S. Blanton (1♀; USNM). Fort Sherman, Mojinga Swamp (
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="9.303333">09°18.2'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-79.965">79°57.9'W</geoCoordinate>
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), 30 Jan 1952, F. S. Blanton (1♂; USNM). Gamboa, Rio Agua Salud (
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="9.118333">09°07.1'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-79.69334">79°41.6'W</geoCoordinate>
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), Jul 1967, W. W. Wirth (1♂; USNM). Las Cruces Trail (
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="9.121667">09°07.3'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-79.71167">79°42.7'W</geoCoordinate>
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), Feb 1958, M. R. Wheeler (3♂, 2♀; USNM). Monte Lirio (
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="8.958333">08°57.5'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-82.825">82°49.5'W</geoCoordinate>
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), 6 Apr 1923, R. C. Shannon (1♀; USNM).
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</paragraph>
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<paragraph pageId="20" pageNumber="21">
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Type locality. Panama. Canal Zone: Barro Colorado Island (
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="9.151667">09°09.1'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-79.846664">79°50.8'W</geoCoordinate>
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).
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</paragraph>
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<paragraph pageId="21" pageNumber="22">
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<pageBreakToken pageId="21" pageNumber="22" start="start">Other</pageBreakToken>
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specimens examined.BELIZE. Stann Creek: Cockscomb Basin Wildlife Sanctuary (
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<geoCoordinate direction="north" orientation="latitude" precision="925" value="16.783333">16°47'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="925" value="-88.5">88°30'W</geoCoordinate>
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), 5-6 Apr 1993, W. N. Mathis (3♂; USNM).
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</paragraph>
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<paragraph pageId="21" pageNumber="22">
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BOLIVIA. La Paz: Apa Apa (8 km S Chulumani;
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-16.593334">16°35.6'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-68.85333">68°51.2'W</geoCoordinate>
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; 3840 m), 10 Mar 2001, W. N. Mathis (1♀; USNM); Mapiri (
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-15.31">15°18.6'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="925" value="-68.21667">68°13'W</geoCoordinate>
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; 720 m), 15 Mar 2001, W. N. Mathis (1♂; USNM); Mapiri (5 km W; Arroyo Tuhiri;
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-15.296667">15°17.8'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-68.26">68°15.6'W</geoCoordinate>
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; 750 m), 16 Mar 2001, A. Freidberg, W. N. Mathis (16♂, 10♀; USNM).
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</paragraph>
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<paragraph pageId="21" pageNumber="22">
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COSTA RICA. Cartago: Tapanti National Park (
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="8.795">08°47.7'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-83.92667">83°55.6'W</geoCoordinate>
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; wet log over stream), 11 Oct 1999, S. A. Marshall (2♂, 2♀; DEBU). Guanacaste: Pitilla (9 km S Santa Cecilia;
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="10.991667">10°59.5'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-85.43">85°25.8'W</geoCoordinate>
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; 700 m), 21 Feb 1996, S. A. Marshall (1♂; DEBU). Heredia: La Virgen del Socorro (
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="10.28">10°16.8'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="925" value="-84.166664">84°10'W</geoCoordinate>
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; 700 m; swept over wet leaf litter), 17 Mar 1991, D. A. Grimaldi, J. Stark (4♂; AMNH).
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<normalizedToken originalValue="Limón">Limon</normalizedToken>
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: Bribri (4 km NE;
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="9.625">09°37.5'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-82.83">82°49.8'W</geoCoordinate>
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; 50 m), Dec-Mar, 1989, 1990, P. Hanson (1♂; DEBU). Puntarenas: Peninsula de Osa,
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<normalizedToken originalValue="Rincón">Rincon</normalizedToken>
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(
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="8.708333">08°42.5'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-83.486664">83°29.2'W</geoCoordinate>
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; palm-mangrove forest; sea level), 24 Mar 1991, D. A. Grimaldi, J. Stark (3♂, 4♀; AMNH);
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<normalizedToken originalValue="Rincón">Rincon</normalizedToken>
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(5 km S;
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="8.701667">08°42.1'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-83.513336">83°30.8'W</geoCoordinate>
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; 95 m), 10-11 Aug 2001, D. and W. N. Mathis (2♂, 7♀; USNM); R. F. Golfo Dulce (24 km W Piedras Blancas;
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="8.786667">08°47.2'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-83.32166">83°19.3'W</geoCoordinate>
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; 200 m), Nov 1990, P. Hanson (2♀; DEBU).
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</paragraph>
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<paragraph pageId="21" pageNumber="22">
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ECUADOR. Orellana: Rio Tiputini Biodiversity Station (
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-0.63666666">0°38.2'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-76.14833">76°8.9'W</geoCoordinate>
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), 12-26 Aug 1999, A. Baptista, M. Kotrba, W. N. Mathis (1♂, 16♀; USNM, ZSMC).
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</paragraph>
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<paragraph lastPageId="22" lastPageNumber="23" pageId="21" pageNumber="22">
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PERU. Cuzco: Quincemil (
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-13.228333">13°13.7'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-70.76">70°45.6'W</geoCoordinate>
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; 740 m), Aug 1962, L. E.
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<normalizedToken originalValue="Peña">Pena</normalizedToken>
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(2♂, 3♀; CNC). Madre de Dios:
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<normalizedToken originalValue="Río">Rio</normalizedToken>
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Manu, Pakitza (
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-11.943334">11°56.6'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-71.28167">71°16.9'W</geoCoordinate>
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; 250 m),
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<pageBreakToken pageId="22" pageNumber="23" start="start">9</pageBreakToken>
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-23 Sep 1988, A. Freidberg, W. N. Mathis (17♂, 11♀; USNM);
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<normalizedToken originalValue="Río">Rio</normalizedToken>
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Manu, Erika (near
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<normalizedToken originalValue="Salvación">Salvacion</normalizedToken>
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;
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<geoCoordinate direction="south" orientation="latitude" precision="92" value="-12.845">12°50.7'S</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-71.388336">71°23.3'W</geoCoordinate>
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; 550 m), 5-6 Sep 1988, A. Freidberg (2♂, 2♀; USNM).
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</paragraph>
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<paragraph pageId="22" pageNumber="23">
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VENEZUELA. Aragua: H. Pittier National Park (6 km N Rancho Grande Biological Station;
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<geoCoordinate direction="north" orientation="latitude" precision="92" value="10.353333">10°21.2'N</geoCoordinate>
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,
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<geoCoordinate direction="west" orientation="longitude" precision="92" value="-67.715">67°42.9'W</geoCoordinate>
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; along stream), 28 Feb 1995, S. A. Marshall (2♂; DEBU).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="22" pageNumber="23" type="distribution">
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<paragraph pageId="22" pageNumber="23">Distribution</paragraph>
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<paragraph pageId="22" pageNumber="23">
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(Fig. 19).
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<taxonomicName genus="Neotropical" lsidName="Neotropical" pageId="22" pageNumber="23" rank="genus">Neotropical</taxonomicName>
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: Belize, Bolivia (La Paz), Costa Rica (Cartago, Guanacaste, Heredia,
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<normalizedToken originalValue="Limón">Limon</normalizedToken>
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, Puntarenas), Ecuador (Orellana), Panama, and Peru (Cuzco, Madre de Dios), Venezuela (Aragua).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="22" pageNumber="23" type="etymology">
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<paragraph pageId="22" pageNumber="23">Etymology.</paragraph>
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<paragraph pageId="22" pageNumber="23">The species epithet, neotropicus, is to recognize the Neotropical distribution of this species and is a noun in apposition.</paragraph>
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</subSubSection>
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<subSubSection pageId="22" pageNumber="23" type="remarks">
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<paragraph pageId="22" pageNumber="23">Remarks.</paragraph>
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<paragraph pageId="22" pageNumber="23">
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This species, like
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus ambiguus" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="ambiguus">Planinasus ambiguus</taxonomicName>
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, is relatively widespread, especially in Andean countries. It can be easily confounded with the other two species in the ambiguus group based on external characters. See
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<normalizedToken originalValue="“Remarks”">"Remarks"</normalizedToken>
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under
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus aenigmaticus" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="aenigmaticus">Planinasus aenigmaticus</taxonomicName>
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sp. n. for further discussion on how to distinguish among
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus aenigmaticus" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="aenigmaticus">Planinasus aenigmaticus</taxonomicName>
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sp. n.,
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus ambiguus" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="ambiguus">Planinasus ambiguus</taxonomicName>
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and
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus neotropicus" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="neotropicus">Planinasus neotropicus</taxonomicName>
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sp. n.
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</paragraph>
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<subSection pageId="22" pageNumber="23" type="the shannoni group">
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<paragraph pageId="22" pageNumber="23">The shannoni group</paragraph>
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<paragraph pageId="22" pageNumber="23">
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Included species.
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus kotrbae" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="kotrbae">Planinasus kotrbae</taxonomicName>
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sp. n.,
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus miradorus" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="miradorus">Planinasus miradorus</taxonomicName>
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sp. n.,
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus shannoni" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="shannoni">Planinasus shannoni</taxonomicName>
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(Malloch),
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus tobagoensis" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="tobagoensis">Planinasus tobagoensis</taxonomicName>
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sp. n.,
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus venezuelensis" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="venezuelensis">Planinasus venezuelensis</taxonomicName>
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Hennig, and
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus xanthops" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="xanthops">Planinasus xanthops</taxonomicName>
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sp. n.
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</paragraph>
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<paragraph pageId="22" pageNumber="23">
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Diagnosis. This species group is distinguished by the following combination of characters: Head: Interfrontal seta long, subequal to length of lateral vertical seta. Antennal coloration variable; pedicel with elongate ventral projection; basal flagellomere long, length nearly twice height. Large facial setae arranged in 2-3 transverse rows; face of females bulbous, evenly transversely arched, mostly black. Thorax: Anepisternum with 2-4 weak setae along posterior margin. Wing strongly infumate. Forefemur of male lacking a preapical yellowish annulus, bearing 1 large, posteroventral seta at apical 1/3. Abdomen: Surstylus generally without posterior processes or lobes (
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus kotrbae" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="kotrbae">Planinasus kotrbae</taxonomicName>
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has a process), in nearly oblique alignment with anterior margin of epandrium (except in
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus tobagoensis" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="tobagoensis">Planinasus tobagoensis</taxonomicName>
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); postgonite with small, finger-like lobe bearing a few apical setulae; phallus mostly membranous (more heavily sclerotized in
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus shannoni" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="shannoni">Planinasus shannoni</taxonomicName>
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); ejaculatory apodeme generally reduced, inconspicuous in some species.
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</paragraph>
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<paragraph pageId="22" pageNumber="23">
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Discussion. The species of this group demonstrate considerable sexual dimorphism. The dimorphism is most evident in the shape and coloration of the face. The shape and coloration of the male face varies, depending on the species, but the face of females is quite similar in three species and is generally dark colored and conspicuously projected forward, bulbous, evenly arched transversely, somewhat flat in lateral view on ventral half. Species of this group share, with species of the atriclypeus group and with
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus obscuripennis" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="species" species="obscuripennis">Planinasus obscuripennis</taxonomicName>
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sp. n. (the obscuripennis group) the reduced number of setae on the postgonite (2-6), and the ejaculatory apodeme is generally reduced or inconspicuous. In other species of
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<taxonomicName class="Insecta" family="Periscelididae" genus="Planinasus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Planinasus" order="Diptera" pageId="22" pageNumber="23" phylum="Arthropoda" rank="genus">Planinasus</taxonomicName>
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, the lobe of the postgonite, which is generally better developed, bears more than 20 setulae, and the ejaculatory apodeme is large, with a fan-like apical expansion.
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</paragraph>
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</subSection>
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</subSubSection>
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</treatment>
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</document> |