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<document id="35D8FB56C48387DDD3B0B5D90659AD5A" ID-DOI="10.11646/zootaxa.5514.1.1" ID-ISSN="1175-5326" ID-Zenodo-Dep="13849314" ID-ZooBank="F2D3EAD5-33F3-4D4C-A257-D942E1AEB6CA" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1727440832015" checkinUser="plazi" docAuthor="Macgowan, Iain &amp; Tschirnhaus, Michael Von" docDate="2024" docId="03F4013A8B543766FF03F9C5FD332ED9" docLanguage="en" docName="zootaxa.5514.1.1.pdf" docOrigin="Zootaxa 5514 (1)" docSource="http://dx.doi.org/10.11646/zootaxa.5514.1.1" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Silba togoensis Macgowan &amp; Tschirnhaus, 2024, sp. nov." docType="treatment" docVersion="2" lastPageNumber="12" masterDocId="FFCD79428B5E376DFF94FFA3FFEF290B" masterDocTitle="Records of Lonchaeidae (Diptera, Cyclorrhapha) from Togo and other African countries, with descriptions of new species" masterLastPageNumber="27" masterPageNumber="1" pageNumber="11" updateTime="1727442337463" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="1AA2BDAD7A94171D08E691937F8C6AE0">Records of Lonchaeidae (Diptera, Cyclorrhapha) from Togo and other African countries, with descriptions of new species</mods:title>
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<mods:name id="3027E59544706F36C97F9467A51825AF" type="personal">
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<mods:namePart id="923C1495BB82B2965C725640456901AA">Macgowan, Iain</mods:namePart>
<mods:affiliation id="A4144C2B0E25F15C5EE342BDB999B3BA">Research Associate, National Museums of Scotland, Collection Centre, 242 West Granton Road, Edinburgh, Scotland. EH 5 1 JA</mods:affiliation>
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<mods:namePart id="9E3F2C361D2C28663384AA698A9BD938">Tschirnhaus, Michael Von</mods:namePart>
<mods:affiliation id="4BF25A86681AE926D6814C22D54D7948">Fakultät Biologie, Universität Bielefeld, Postfach 100 131, 33501 Bielefeld, Germany</mods:affiliation>
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<mods:title id="6F63660528A7D33DF8AA9701573E81B6">Zootaxa</mods:title>
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<mods:date id="7D115D999D12275E91D8F18556AFD7C0">2024</mods:date>
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<mods:number id="C8CFF24E98D47FD7D3996A663F8F41AB">2024-09-25</mods:number>
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<mods:identifier id="1DE36A156FA095876746A535CABE4AE8" type="DOI">10.11646/zootaxa.5514.1.1</mods:identifier>
<mods:identifier id="573070EF773A213C72BD938546023913" type="ISSN">1175-5326</mods:identifier>
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<treatment id="03F4013A8B543766FF03F9C5FD332ED9" LSID="urn:lsid:plazi:treatment:03F4013A8B543766FF03F9C5FD332ED9" httpUri="http://treatment.plazi.org/id/03F4013A8B543766FF03F9C5FD332ED9" lastPageId="11" lastPageNumber="12" pageId="10" pageNumber="11">
<subSubSection id="C347E3A78B543767FF03F9C5FD942F8B" box="[151,635,1638,1665]" pageId="10" pageNumber="11" type="nomenclature">
<paragraph id="8BE2B02C8B543767FF03F9C5FD942F8B" blockId="10.[151,635,1638,1665]" box="[151,635,1638,1665]" pageId="10" pageNumber="11">
<heading id="D0AA07408B543767FF03F9C5FD942F8B" bold="true" box="[151,635,1638,1665]" fontSize="11" level="1" pageId="10" pageNumber="11" reason="1">
<emphasis id="B9296C3E8B543767FF03F9C5FD942F8B" bold="true" box="[151,635,1638,1665]" pageId="10" pageNumber="11">
<taxonomicName id="4C5DCBAF8B543767FF03F9C5FEA32F8B" authorityName="Macgowan &amp; Tschirnhaus" authorityYear="2024" box="[151,332,1638,1665]" class="Insecta" family="Lonchaeidae" genus="Silba" kingdom="Animalia" order="Diptera" pageId="10" pageNumber="11" phylum="Arthropoda" rank="species" species="togoensis" status="sp. nov.">
<emphasis id="B9296C3E8B543767FF03F9C5FEA32F8B" bold="true" box="[151,332,1638,1665]" italics="true" pageId="10" pageNumber="11">Silba togoensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A21AD1458B543767FEC0F9C5FE5D2F8B" box="[340,434,1638,1664]" pageId="10" pageNumber="11" rank="species">sp. nov.</taxonomicNameLabel>
(
<figureCitation id="1366ACA98B543767FE55F9C5FD9B2F8B" box="[449,628,1638,1664]" captionStart="FIGURES 2830" captionStartId="11.[152,270,1257,1281]" captionTargetBox="[155,1421,318,1223]" captionTargetId="figure-102@11.[151,1436,309,1234]" captionTargetPageId="11" captionText="FIGURES 2830. Silba togoensis sp. nov. 28. Epandrium and associated structures, lateral view (hypopygium removed). 29. Inner surface of surstylus. 30. Phallus, lateral view." figureDoi="http://doi.org/10.5281/zenodo.13849332" httpUri="https://zenodo.org/record/13849332/files/figure.png" pageId="10" pageNumber="11">Figures 2830</figureCitation>
)
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C347E3A78B543766FF03F90DFA862F62" lastPageId="11" lastPageNumber="12" pageId="10" pageNumber="11" type="description">
<paragraph id="8BE2B02C8B543767FF03F90DFB222E77" blockId="10.[151,1437,1710,2025]" pageId="10" pageNumber="11">
Description:
<typeStatus id="54E60E8E8B543767FEB8F90DFE7B2FC3" box="[300,404,1710,1736]" pageId="10" pageNumber="11" type="holotype">Holotype</typeStatus>
male:
<emphasis id="B9296C3E8B543767FE73F90DFDCB2FC3" box="[487,548,1710,1736]" italics="true" pageId="10" pageNumber="11">Head</emphasis>
: Eye bare. Ratio of eye width to frons width 1.5:1 Frons sub-shining black, dulled by microsculpture. Orbital plate sub-shining black, dulled by microsculpture, bare apart from the orbital seta. Frontal and interfrontal setulae short, at most 0.2x length of orbital seta, Lunule covered in dense greyish pollinosity, parafacial slightly grey pollinose, face black. Antenna, postpedicel brownish-black, long, reaching down below mouth margin, length to depth ratio 2.8:1. Arista yellowish basally, width of plumosity approximately 0.5x depth of the postpedicel. Anterior genal setulae in a single row of 56 along mouth margin. Palpus black.
</paragraph>
<paragraph id="8BE2B02C8B543766FF53F825FB9B2816" blockId="10.[151,1437,1710,2025]" lastBlockId="11.[151,1437,151,285]" lastPageId="11" lastPageNumber="12" pageId="10" pageNumber="11">
<emphasis id="B9296C3E8B543767FF53F825FEF72EAB" box="[199,280,1926,1952]" italics="true" pageId="10" pageNumber="11">Thorax</emphasis>
: Mesonotum sub-shining blue-black, with a covering of short setulae, these approximately 0.25x length of the orbital seta. Anepisternum with a vertical row of three posterior and three anterior setae, otherwise the sclerite with a scattering of setulae. One seta on proepimeron and one slightly weaker on proepisternum. Katepisternum with two setae near the dorsal margin, the posterior slightly stronger and positioned slightly more dorsal than the anterior, a scattering of short setulae located along the anterior margin of this sclerite otherwise the surface is bare. Scutellum with setae and setulae mostly missing. Calypter whitish with a short, white fringe of uniform length. Wing clear with pale brown veins, wing length
<quantity id="4CA51DC98B553766FD3FFEA0FD122816" box="[683,765,259,285]" metricMagnitude="-3" metricUnit="m" metricValue="3.9" pageId="11" pageNumber="12" unit="mm" value="3.9">3.9mm</quantity>
. Haltere dark. Legs entirely dark.
</paragraph>
<caption id="DF22E0A48B553766FF0CFB4AFD712C2E" ID-DOI="http://doi.org/10.5281/zenodo.13849332" ID-Zenodo-Dep="13849332" httpUri="https://zenodo.org/record/13849332/files/figure.png" pageId="11" pageNumber="12" startId="11.[152,270,1257,1281]" targetBox="[155,1421,318,1223]" targetPageId="11" targetType="figure">
<paragraph id="8BE2B02C8B553766FF0CFB4AFD712C2E" blockId="11.[151,1437,1257,1317]" pageId="11" pageNumber="12">
<emphasis id="B9296C3E8B553766FF0CFB4AFEB42C0A" bold="true" box="[152,347,1257,1281]" pageId="11" pageNumber="12">FIGURES 2830.</emphasis>
<taxonomicName id="4C5DCBAF8B553766FEF5FB4AFE132C0A" authorityName="Macgowan &amp; Tschirnhaus" authorityYear="2024" box="[353,508,1257,1281]" class="Insecta" family="Lonchaeidae" genus="Silba" kingdom="Animalia" order="Diptera" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="togoensis" status="sp. nov.">
<emphasis id="B9296C3E8B553766FEF5FB4AFE132C0A" box="[353,508,1257,1281]" italics="true" pageId="11" pageNumber="12">Silba togoensis</emphasis>
</taxonomicName>
<emphasis id="B9296C3E8B553766FD96FB4AFDBC2C0A" bold="true" box="[514,595,1257,1281]" pageId="11" pageNumber="12">
<taxonomicNameLabel id="A21AD1458B553766FD96FB4AFDBC2C0A" box="[514,595,1257,1281]" pageId="11" pageNumber="12" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
28. Epandrium and associated structures, lateral view (hypopygium removed). 29. Inner surface of surstylus. 30. Phallus, lateral view.
</paragraph>
</caption>
<paragraph id="8BE2B02C8B553766FF53FAD4FA862F62" blockId="11.[151,1437,1399,2002]" pageId="11" pageNumber="12">
<emphasis id="B9296C3E8B553766FF53FAD4FE912C9A" box="[199,382,1399,1425]" italics="true" pageId="11" pageNumber="12">Male terminalia</emphasis>
: In lateral view epandrium almost twice as high as wide, with strong setae on posterior half, the longest and strongest of these near the posterior margin reaching to apex of the cercus. In ventral view surstyli covered in minute spicules, inner margin with some five excavations, these becoming smaller anteriorly. Inner margin of surstylus with five prensisetae along posterior margin, the most posterior being the largest, the most anterior the smallest and slightly detached from the remainder. Phallus clearly bi-segmented, the basiphallus being a relatively deep boat-shape, 0.3x as deep as it is long with obvious spicules on the apical half, distiphallus length equals length of the basiphallus, distiphallus slightly expanding apically, apex oblique with a membranous tip.
</paragraph>
</subSubSection>
<subSubSection id="C347E3A78B553766FF53F9D0FA752E16" pageId="11" pageNumber="12" type="diagnosis">
<paragraph id="8BE2B02C8B553766FF53F9D0FA752E16" blockId="11.[151,1437,1399,2002]" pageId="11" pageNumber="12">
<emphasis id="B9296C3E8B553766FF53F9D0FEAD2F86" bold="true" box="[199,322,1651,1677]" pageId="11" pageNumber="12">Diagnosis.</emphasis>
This is a member of the
<taxonomicName id="4C5DCBAF8B553766FDFFF9D0FCEA2F86" authorityName="McAlpine" authorityYear="1956" box="[619,773,1651,1677]" class="Insecta" family="Lonchaeidae" genus="Silba" kingdom="Animalia" order="Diptera" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="adipata">
<emphasis id="B9296C3E8B553766FDFFF9D0FCEA2F86" box="[619,773,1651,1677]" italics="true" pageId="11" pageNumber="12">Silba adipata</emphasis>
</taxonomicName>
species-group exhibiting the serrated inner margin of the surstylus. However, in the case of
<taxonomicName id="4C5DCBAF8B553766FDBEF93BFD5C2FBA" authorityName="Macgowan &amp; Tschirnhaus" authorityYear="2024" box="[554,691,1688,1714]" class="Insecta" family="Lonchaeidae" genus="Silba" kingdom="Animalia" order="Diptera" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="togoensis">
<emphasis id="B9296C3E8B553766FDBEF93BFD5C2FBA" box="[554,691,1688,1714]" italics="true" pageId="11" pageNumber="12">S. togoensis</emphasis>
</taxonomicName>
the rather stout phallus with obvious spicules on the apical half of the basiphallus is distinctive.
<taxonomicName id="4C5DCBAF8B553766FD9DF918FD4E2FDE" authorityName="McAlpine" authorityYear="1956" box="[521,673,1723,1749]" class="Insecta" family="Lonchaeidae" genus="Silba" kingdom="Animalia" order="Diptera" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="adipata">
<emphasis id="B9296C3E8B553766FD9DF918FD4E2FDE" box="[521,673,1723,1749]" italics="true" pageId="11" pageNumber="12">Silba adipata</emphasis>
</taxonomicName>
is similar but the corrugations of the inner surface of the surstylus are smaller and more regular. The phallus is longer and more slender, the distiphallus being 1.4x the length of the basiphallus and the basiphallus 0.2x as deep as it is long. Differences from
<taxonomicName id="4C5DCBAF8B553766FC75F8A0FB7C2E16" authorityName="Macgowan &amp; Tschirnhaus" authorityYear="2024" box="[993,1171,1795,1821]" class="Insecta" family="Lonchaeidae" genus="Silba" kingdom="Animalia" order="Diptera" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="otandjobo">
<emphasis id="B9296C3E8B553766FC75F8A0FB7C2E16" box="[993,1171,1795,1821]" italics="true" pageId="11" pageNumber="12">Silba otandjobo</emphasis>
</taxonomicName>
are outlined in the key.
</paragraph>
</subSubSection>
<subSubSection id="C347E3A78B553766FF53F884FF0A2EA6" pageId="11" pageNumber="12" type="materials_examined">
<paragraph id="8BE2B02C8B553766FF53F884FF0A2EA6" blockId="11.[151,1437,1399,2002]" pageId="11" pageNumber="12">
<emphasis id="B9296C3E8B553766FF53F884FE812E4A" bold="true" box="[199,366,1831,1857]" pageId="11" pageNumber="12">Type material</emphasis>
.
<materialsCitation id="3B35BA718B553766FEE9F884FF0A2EA6" collectionCode="SDEI" collectorName="M. von Tschirnhaus. Specimen" country="Togo" county="Togo" elevation="180" latitude="7.703" location="river Wawa" longLatPrecision="7" longitude="0.5905" municipality="Ghana" pageId="11" pageNumber="12" specimenCount="1" specimenCount-male="1" stateProvince="Plateaux" typeStatus="holotype">
<typeStatus id="54E60E8E8B553766FEE9F884FE052E4A" box="[381,490,1831,1857]" pageId="11" pageNumber="12" type="holotype">Holotype</typeStatus>
:
<specimenCount id="9D5B7BA58B553766FE60F88BFDE32E49" box="[500,524,1832,1858]" count="1" pageId="11" pageNumber="12" type="male"></specimenCount>
.
<emphasis id="B9296C3E8B553766FD83F884FD852E4A" bold="true" box="[535,618,1831,1857]" pageId="11" pageNumber="12">
<collectingCountry id="F34AF0BC8B553766FD83F884FD852E4A" box="[535,618,1831,1857]" name="Togo" pageId="11" pageNumber="12">TOGO</collectingCountry>
</emphasis>
:
<collectingCounty id="6283C8A08B553766FDEEF88BFD5C2E49" box="[634,691,1832,1858]" pageId="11" pageNumber="12">Togo</collectingCounty>
<collectingRegion id="49997ECE8B553766FD2EF884FC4B2E4A" box="[698,932,1831,1857]" country="Togo" name="Plateaux" pageId="11" pageNumber="12">Région des Plateaux</collectingRegion>
:
<locationDeviation id="9A50A90E8B553766FC3BF88BFB7A2E4A" box="[943,1173,1831,1858]" location="Kessibo-Wawa" pageId="11" pageNumber="12">N of Kessibo-Wawa</locationDeviation>
, at the border to
<collectingMunicipality id="6B862A568B553766FAC7F884FA732E4A" box="[1363,1436,1831,1857]" pageId="11" pageNumber="12">Ghana</collectingMunicipality>
(N. of Badou), at
<location id="8E82E6F78B553766FEF0F8E8FE062E6D" LSID="urn:lsid:plazi:treatment:03F4013A8B543766FF03F9C5FD332ED9:8E82E6F78B553766FEF0F8E8FE062E6D" box="[356,489,1867,1894]" country="Togo" county="Togo" latitude="7.703" longLatPrecision="7" longitude="0.5905" municipality="Ghana" name="river Wawa" pageId="11" pageNumber="12" stateProvince="Plateaux">river Wawa</location>
,
<geoCoordinate id="EE69D6EB8B553766FE62F8E8FDB82E6E" box="[502,599,1867,1893]" degrees="7.7030" direction="north" orientation="latitude" pageId="11" pageNumber="12" precision="5" value="7.703">7.7030N</geoCoordinate>
<geoCoordinate id="EE69D6EB8B553766FDF4F8E8FD2F2E6D" box="[608,704,1867,1894]" degrees="0.5905" direction="east" orientation="longitude" pageId="11" pageNumber="12" precision="5" value="0.5905">0.5905E</geoCoordinate>
, Forest understory, cocoa plantation, and sun exposed vegetable fields, some
<taxonomicName id="4C5DCBAF8B553766FEB9F8D3FE5C2E81" authorityName="de Jussieu" authorityYear="1789" box="[301,435,1904,1930]" class="Liliopsida" family="Cyperaceae" kingdom="Plantae" order="Poales" pageId="11" pageNumber="12" phylum="Tracheophyta" rank="family">
<emphasis id="B9296C3E8B553766FEB9F8D3FE5C2E81" box="[301,435,1904,1930]" italics="true" pageId="11" pageNumber="12">Cyperaceae</emphasis>
</taxonomicName>
,
<quantity id="4CA51DC98B553766FE50F8CCFDE82E82" box="[452,519,1903,1929]" metricMagnitude="2" metricUnit="m" metricValue="1.8" pageId="11" pageNumber="12" unit="m" value="180.0">
<elevation id="0070571F8B553766FE50F8CCFDE82E82" box="[452,519,1903,1929]" metricMagnitude="2" metricUnit="m" metricValue="1.8" pageId="11" pageNumber="12" unit="m" value="180.0">180m</elevation>
</quantity>
, 24.4.200 8, leg.
<collectorName id="26A8D5FA8B553766FD5FF8D3FBDF2E82" box="[715,1072,1903,1930]" pageId="11" pageNumber="12">M. von Tschirnhaus. Specimen</collectorName>
deposited in
<collectionCode id="ED4C28E98B553766FB45F8CCFAFC2E82" box="[1233,1299,1903,1929]" pageId="11" pageNumber="12">SDEI</collectionCode>
; SDEI-Dip- 01004.
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="C347E3A78B553766FF53F814FD332ED9" box="[199,732,1975,2002]" pageId="11" pageNumber="12" type="etymology">
<paragraph id="8BE2B02C8B553766FF53F814FD332ED9" blockId="11.[151,1437,1399,2002]" box="[199,732,1975,2002]" pageId="11" pageNumber="12">
<emphasis id="B9296C3E8B553766FF53F814FEA12EDA" bold="true" box="[199,334,1975,2001]" pageId="11" pageNumber="12">Etymology.</emphasis>
The specific epithet refers to
<collectingCountry id="F34AF0BC8B553766FD0FF81BFD372ED9" box="[667,728,1976,2002]" name="Togo" pageId="11" pageNumber="12">Togo</collectingCountry>
.
</paragraph>
</subSubSection>
</treatment>
</document>