221 lines
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221 lines
30 KiB
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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.945.51860" ID-GBIF-Dataset="1c694c7e-3d35-4520-b398-6189a61d1430" ID-PMC="PMC7351832" ID-Pensoft-Pub="1313-2970-945-99" ID-Pensoft-UUID="1E1F40C8FAD751509E70897F4DE56527" ID-PubMed="32714007" ID-ZooBank="CCD1B83E262441CDBD0AE1C57EDCA4DC" ModsDocID="1313-2970-945-99" checkinTime="1593797374489" checkinUser="pensoft" docAuthor="Potapov, Mikhail B., Janion-Scheepers, Charlene & Deharveng, Louis" docDate="2020" docId="55D5CB778C3950DB9A2A997D716C58B0" docLanguage="en" docName="ZooKeys 945: 99-127" docOrigin="ZooKeys 945" docSource="http://dx.doi.org/10.3897/zookeys.945.51860" docTitle="Isotominella laterochaeta Potapov & Janion-Scheepers & Deharveng 2020, sp. nov." docType="treatment" docUuid="DD3D202C-F6D0-4912-A1BE-DFD11557771B" docUuidSource="ZooBank" docVersion="4" id="1E1F40C8FAD751509E70897F4DE56527" lastPageNumber="99" masterDocId="1E1F40C8FAD751509E70897F4DE56527" masterDocTitle="Taxonomy of the Cryptopygus complex. III. The revision of South African species of Cryptopygus and Isotominella (Collembola, Isotomidae)" masterLastPageNumber="127" masterPageNumber="99" pageNumber="99" updateTime="1668169057397" 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>Taxonomy of the Cryptopygus complex. III. The revision of South African species of Cryptopygus and Isotominella (Collembola, Isotomidae)</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>Potapov, Mikhail B.</mods:namePart>
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<mods:affiliation>Senckenberg Museum of Natural History Goerlitz, Am Museum 1, 02826, Goerlitz, Germany & Moscow State Pedagogical University, Kibalchich str., 6, korp. 3, Moscow 129278, Russia</mods:affiliation>
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<mods:nameIdentifier type="orcid">https://orcid.org/0000-0002-6111-3354</mods:nameIdentifier>
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<mods:nameIdentifier type="email">mpnk-abroad@yandex.ru</mods:nameIdentifier>
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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>Janion-Scheepers, Charlene</mods:namePart>
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<mods:affiliation>University of Cape Town, Department of Biological Sciences, Rondebosch, 7701, South Africa & Iziko Museums of South Africa, 25 Queen Victoria Street, Cape Town, 8001, South Africa</mods:affiliation>
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<mods:nameIdentifier type="orcid">https://orcid.org/0000-0001-5942-7912</mods:nameIdentifier>
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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>Deharveng, Louis</mods:namePart>
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<mods:affiliation>Institut de Systematique, Evolution, Biodiversite ISYEB-UMR 7205 - CNRS, MNHN, UPMC, EPHE, Museum national d'Histoire naturelle, Sorbonne Universites, 45 rue Buffon, F- 75005, Paris, France</mods:affiliation>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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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>2020</mods:date>
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<mods:detail type="volume">
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<mods:number>945</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>99</mods:start>
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<mods:end>127</mods:end>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.945.51860</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.945.51860</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-945-99</mods:identifier>
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<mods:identifier type="ZooBank">CCD1B83E262441CDBD0AE1C57EDCA4DC</mods:identifier>
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<mods:identifier type="Pensoft-UUID">1E1F40C8FAD751509E70897F4DE56527</mods:identifier>
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<treatment ID-GBIF-Taxon="164910866" LSID="urn:lsid:zoobank.org:act:DD3D202C-F6D0-4912-A1BE-DFD11557771B" httpUri="http://treatment.plazi.org/id/55D5CB778C3950DB9A2A997D716C58B0" lastPageNumber="99" pageId="0" pageNumber="99">
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<subSubSection pageId="0" pageNumber="99" type="nomenclature">
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<paragraph pageId="0" pageNumber="99">
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<taxonomicName LSID="55D5CB77-8C39-50DB-9A2A-997D716C58B0" authority="Potapov & Janion-Scheepers & Deharveng, 2020" authorityName="Potapov & Janion-Scheepers & Deharveng" authorityYear="2020" class="Collembola" family="Isotomidae" genus="Isotominella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isotominella laterochaeta" order="Entomobryomorpha" pageId="0" pageNumber="99" phylum="Arthropoda" rank="species" species="laterochaeta" status="sp. nov.">Isotominella laterochaeta</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="99">sp. nov.</taxonomicNameLabel>
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">Figures 47-53</figureCitation>
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<figureCitation captionStart="Figures 54–59" captionStartId="F11" captionText="Figures 54 - 59. I. laterochaeta sp. nov. 54 macrochaetotaxy and s-ms-pattern 55 - 57 dens, posterior (55), anterior (56), and lateral (57) views 58, 59 manubrium, anterior (58) and posterior (59) views. Abbreviations: ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures54-59" httpUri="https://binary.pensoft.net/fig/428169" pageId="0" pageNumber="99">, 54-59</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="99" type="type material">
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<paragraph pageId="0" pageNumber="99">Type material.</paragraph>
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<paragraph pageId="0" pageNumber="99">
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Holotype and eight paratypes: South Africa • Western Cape, Platboom, Cape Point National Park;
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<geoCoordinate degrees="34.336017" direction="south" orientation="latitude" precision="1" value="-34.336018">34.336017S</geoCoordinate>
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,
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<geoCoordinate degrees="18.447633" direction="east" orientation="longitude" precision="1" value="18.447634">18.447633E</geoCoordinate>
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; 14 Nov. 2010; L. Deharveng and A. Bedos leg.; soil; SAF 318. Holotype and two paratypes on three slides deposited at SAMC, three paratypes on three slides at NMHN, and three paratypes on three slides at MSPU.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="99" type="diagnosis">
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<paragraph pageId="0" pageNumber="99">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="99">Blind. Labium with 7-9 basolateral chaetae. Chaetae on ventral side of Th. III present. Labial palp with 16 guard chaetae. Three sublobal hairs on maxillary outer lobe. Anterior side of manubrium with 9-10+9-10 chaetae. Dens with 12-14 anterior and four posterior chaetae. Mucro bidentate.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="99" type="description">
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<paragraph pageId="0" pageNumber="99">Description.</paragraph>
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<paragraph pageId="0" pageNumber="99">
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Body size 0.8-1.0 mm. White, without pigmentation, appearance as
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<taxonomicName class="Collembola" family="Isotomidae" genus="Mucrosomia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mucrosomia caeca" order="Entomobryomorpha" pageId="0" pageNumber="99" phylum="Arthropoda" rank="species" species="caeca">
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<emphasis italics="true" pageId="0" pageNumber="99">Mucrosomia caeca</emphasis>
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</taxonomicName>
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(Fig.
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">47</figureCitation>
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). Mouth cone projected forward. Abd. V well separated from Abd. IV and fused with Abd. VI (Fig.
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">53</figureCitation>
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). Cuticle
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<normalizedToken originalValue="“smooth”">"smooth"</normalizedToken>
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. Without ocelli. PAO small, not constricted, less than a half of width of Ant. I and 0.5-0.7 as long as inner unguis length. Maxillary head with slender lamellae and thin capitulum. Maxillary outer lobe with three sublobal hairs, maxillary palp simple (Fig.
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">52</figureCitation>
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). Labral formula as 2/5,5,4, edge of labrum not reduced. Chaetae of labrum conspicuously projected forward (Fig.
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">50</figureCitation>
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). Labral chaetae of middle and distal rows thicker than chaetae of proximal row. Inner chaetae of distal row shifted to more proximal position and integrated to middle row resulting the impression of 5,7,2 formula. Up to ten clypeal chaetae. Labium with five papillae (
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<emphasis italics="true" pageId="0" pageNumber="99">A-E</emphasis>
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), 16 guard chaetae (guard chaetae e7 present), and three proximal chaetae (Fig.
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">49</figureCitation>
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). Terminal
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<normalizedToken originalValue="‘sensilla’">'sensilla'</normalizedToken>
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of papillae
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<emphasis italics="true" pageId="0" pageNumber="99">A</emphasis>
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and
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<emphasis italics="true" pageId="0" pageNumber="99">B</emphasis>
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rod-like. All inner guard chaetae (b3, b4, d3, d4, e2, e3, e5, e6) strongly curved. With two curved and small accessorial hypostomal chaetae (h1, h2), main hypostomal chaeta (H) absent (Fig.
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">49</figureCitation>
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). Basal part of labium with four basomedian and 7-9 basolateral chaetae (Figs
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">48</figureCitation>
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,
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">52</figureCitation>
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). Ventral side of head with numerous chaetae (up to 13 on one side along ventral line), with numerous chaetae at base of labium (Fig.
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">48</figureCitation>
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). Normal s-chaetae and basal micro s-chaetae hardly differentiated on antennae, their number difficult to ascertain. Ant. I with many chaetae and at least two ventral s-chaetae (s) mixed with normal chaetae (or thinner s-chaetae). Ant. III with five distal s (including one lateral), without additional s-chaetae. S-chaetae on Ant. IV weakly differentiated. Organite small, rudimental, close to subapical micro s-chaeta, which is long and bent (Fig.
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">51</figureCitation>
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).
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</paragraph>
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<caption doi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99" start="Figures 47–53" startId="F10">
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<paragraph pageId="0" pageNumber="99">
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<emphasis bold="true" pageId="0" pageNumber="99">Figures 47-53.</emphasis>
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<taxonomicName authorityName="Potapov & Janion-Scheepers & Deharveng" authorityYear="2020" class="Collembola" family="Isotomidae" genus="Isotominella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isotominella laterochaeta" order="Entomobryomorpha" pageId="0" pageNumber="99" phylum="Arthropoda" rank="species" species="laterochaeta">
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<emphasis italics="true" pageId="0" pageNumber="99">Isotominella laterochaeta</emphasis>
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</taxonomicName>
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sp. nov.
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<emphasis bold="true" pageId="0" pageNumber="99">47</emphasis>
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appearance and macrochaetotaxy (some macrochaetae lost)
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<emphasis bold="true" pageId="0" pageNumber="99">48</emphasis>
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ventral side of head
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<emphasis bold="true" pageId="0" pageNumber="99">49</emphasis>
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labial palp (hypostomal chaetae shown separately)
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<emphasis bold="true" pageId="0" pageNumber="99">50</emphasis>
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labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively)
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<emphasis bold="true" pageId="0" pageNumber="99">51</emphasis>
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apical part of Ant. IV
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<emphasis bold="true" pageId="0" pageNumber="99">52</emphasis>
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basal parts of labium and maxillary outer lobe, lateral view
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<emphasis bold="true" pageId="0" pageNumber="99">53</emphasis>
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posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e7 guard chaeta e7, mp maxillary palp, h1 and h2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta.
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</paragraph>
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</caption>
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<paragraph pageId="0" pageNumber="99">
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Common chaetae long. S-formula as 3,3/2,2,2,2,3 (s), 1,0/1,0,0 (ms) (Fig.
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<figureCitation captionStart="Figures 54–59" captionStartId="F11" captionText="Figures 54 - 59. I. laterochaeta sp. nov. 54 macrochaetotaxy and s-ms-pattern 55 - 57 dens, posterior (55), anterior (56), and lateral (57) views 58, 59 manubrium, anterior (58) and posterior (59) views. Abbreviations: ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures54-59" httpUri="https://binary.pensoft.net/fig/428169" pageId="0" pageNumber="99">54</figureCitation>
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). Tergal s-chaetae longer than common chaetae, less distinguishable on Th. II and III. Medial s-chaetae on Th. II-Abd. III situated in p-row of chaetae. On Abd. V, two dorsal s-chaetae (accp1, accp2) long, one lateral s-chaeta short (Fig.
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<figureCitation captionStart="Figures 47–53" captionStartId="F10" captionText="Figures 47 - 53. Isotominella laterochaeta sp. nov. 47 appearance and macrochaetotaxy (some macrochaetae lost) 48 ventral side of head 49 labial palp (hypostomal chaetae shown separately) 50 labrum, lateral view (chaetae of distal row marked, three, three, and two chaetae shown for proximal, middle, and distal rows, respectively) 51 apical part of Ant. IV 52 basal parts of labium and maxillary outer lobe, lateral view 53 posterior edge of Abd. IV and fused Abd. V and VI. Abbreviations: A and B papillae of labial palp, blf basolateral field of labium, e 7 guard chaeta e 7, mp maxillary palp, h 1 and h 2 hypostomal chaetae, org organit, sms subapical ms-chaeta, ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures47-53" httpUri="https://binary.pensoft.net/fig/428168" pageId="0" pageNumber="99">53</figureCitation>
|
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). Macrochaetae smooth and long, 1,1/3,3,3,4 in number. Macrochaetae on Abd. V longer than on Abd. VI: 0.8-0.9 and 0.6-0.7 as long as the dens and 3.3-3.5 and 2.3-2.8 times longer than mucro on Abd. V and VI, respectively. One thin macrochaetae (possibly additional s-chaeta) present in latero-ventral position on Abd. V. Foil chaetae at the tip of abdomen absent. Axial chaetotaxy for Th. II-Abd. IV 14-16,7-8/5-6, 5-6, 5-6, ca. 6. Th. III with 2-4+2-4 ventral chaetae.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="99">
|
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Unguis of normal shape, without inner tooth and with two lateral teeth. Lateral teeth often asymmetrical in size and position. Empodial appendage thin, without lamellae, 0.6-0.7 as long as unguis. All tibiotarsi with many additional chaetae: Tibiotarsal tenent hairs not clavate. Ventral tube with 5-8+5-8 laterodistal and 6-9 posterior chaetae (with two larger in distal position), anteriorly without chaetae. Tenaculum with 4+4 teeth and two chaetae (rarely more). Anterior furcal subcoxa with 19-23, posterior one with 11-15 chaetae. Anterior side of manubrium with 9-10+9-10 chaetae arranged in two symmetrical group (Fig.
|
||
<figureCitation captionStart="Figures 54–59" captionStartId="F11" captionText="Figures 54 - 59. I. laterochaeta sp. nov. 54 macrochaetotaxy and s-ms-pattern 55 - 57 dens, posterior (55), anterior (56), and lateral (57) views 58, 59 manubrium, anterior (58) and posterior (59) views. Abbreviations: ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures54-59" httpUri="https://binary.pensoft.net/fig/428169" pageId="0" pageNumber="99">58</figureCitation>
|
||
), with distal pair thickened. Posterior side of manubrium with 11-14+11-14 chaetae on main part, 4+4 laterodistal and 2(3)+2(3) lateral chaetae (Fig.
|
||
<figureCitation captionStart="Figures 54–59" captionStartId="F11" captionText="Figures 54 - 59. I. laterochaeta sp. nov. 54 macrochaetotaxy and s-ms-pattern 55 - 57 dens, posterior (55), anterior (56), and lateral (57) views 58, 59 manubrium, anterior (58) and posterior (59) views. Abbreviations: ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures54-59" httpUri="https://binary.pensoft.net/fig/428169" pageId="0" pageNumber="99">59</figureCitation>
|
||
). Dens of medium length, with weak crenulation at the middle, with 12-14 anterior and four posterior chaetae (Figs
|
||
<figureCitation captionStart="Figures 54–59" captionStartId="F11" captionText="Figures 54 - 59. I. laterochaeta sp. nov. 54 macrochaetotaxy and s-ms-pattern 55 - 57 dens, posterior (55), anterior (56), and lateral (57) views 58, 59 manubrium, anterior (58) and posterior (59) views. Abbreviations: ss s-chaeta, msms-chaeta." figureDoi="10.3897/zookeys.945.51860.figures54-59" httpUri="https://binary.pensoft.net/fig/428169" pageId="0" pageNumber="99">55-57</figureCitation>
|
||
). One minute chaeta-like process often seen close to distal chaeta. Mucro bidentate. Ratio manubrium: dens: mucro = 3.0-3.9: 3.2-4.3: 1.
|
||
</paragraph>
|
||
<caption doi="10.3897/zookeys.945.51860.figures54-59" httpUri="https://binary.pensoft.net/fig/428169" pageId="0" pageNumber="99" start="Figures 54–59" startId="F11">
|
||
<paragraph pageId="0" pageNumber="99">
|
||
<emphasis bold="true" pageId="0" pageNumber="99">Figures 54-59.</emphasis>
|
||
<taxonomicName lsidName="I. laterochaeta" pageId="0" pageNumber="99" rank="species" species="laterochaeta">
|
||
<emphasis italics="true" pageId="0" pageNumber="99">I. laterochaeta</emphasis>
|
||
</taxonomicName>
|
||
sp. nov.
|
||
<emphasis bold="true" pageId="0" pageNumber="99">54</emphasis>
|
||
macrochaetotaxy and s-ms-pattern
|
||
<emphasis bold="true" pageId="0" pageNumber="99">55-57</emphasis>
|
||
dens, posterior (
|
||
<emphasis bold="true" pageId="0" pageNumber="99">55</emphasis>
|
||
), anterior (
|
||
<emphasis bold="true" pageId="0" pageNumber="99">56</emphasis>
|
||
), and lateral (
|
||
<emphasis bold="true" pageId="0" pageNumber="99">57</emphasis>
|
||
) views
|
||
<emphasis bold="true" pageId="0" pageNumber="99">58, 59</emphasis>
|
||
manubrium, anterior (
|
||
<emphasis bold="true" pageId="0" pageNumber="99">58</emphasis>
|
||
) and posterior (
|
||
<emphasis bold="true" pageId="0" pageNumber="99">59</emphasis>
|
||
) views. Abbreviations: ss s-chaeta, msms-chaeta.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="99" type="etymology">
|
||
<paragraph pageId="0" pageNumber="99">Etymology.</paragraph>
|
||
<paragraph pageId="0" pageNumber="99">The name is derived from its many lateral chaetae on the basal part of labium.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="99" type="distribution">
|
||
<paragraph pageId="0" pageNumber="99">Distribution and ecology.</paragraph>
|
||
<paragraph pageId="0" pageNumber="99">Known only from type locality (Cape Point National Park).</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="99" type="discussion">
|
||
<paragraph pageId="0" pageNumber="99">Discussion.</paragraph>
|
||
<paragraph pageId="0" pageNumber="99">
|
||
<taxonomicName authorityName="Potapov & Janion-Scheepers & Deharveng" authorityYear="2020" class="Collembola" family="Isotomidae" genus="Isotominella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Isotominella laterochaeta" order="Entomobryomorpha" pageId="0" pageNumber="99" phylum="Arthropoda" rank="species" species="laterochaeta">
|
||
<emphasis italics="true" pageId="0" pageNumber="99">Isotominella laterochaeta</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. and
|
||
<taxonomicName lsidName="I. geophila" pageId="0" pageNumber="99" rank="species" species="geophila">
|
||
<emphasis italics="true" pageId="0" pageNumber="99">I. geophila</emphasis>
|
||
</taxonomicName>
|
||
(type species of the genus) differ by the number of anterior chaetae on the manubrium (9-10+9-10 vs. 1-4+1-4), chaetae on ventral side of Th. III (present vs. absent), number of guard chaetae on labial palp (16 vs. 13-14), and number of sublobal hairs (three vs. two) on maxillary outer lobe. Minute chaeta placed at the middle of posterior side of dens, numerous postlabial chaetae, and absence of hypostomal chaeta H are unique to
|
||
<taxonomicName lsidName="I. laterochaeta" pageId="0" pageNumber="99" rank="species" species="laterochaeta">
|
||
<emphasis italics="true" pageId="0" pageNumber="99">I. laterochaeta</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. The two last characters are unknown for
|
||
<taxonomicName lsidName="I. geophila" pageId="0" pageNumber="99" rank="species" species="geophila">
|
||
<emphasis italics="true" pageId="0" pageNumber="99">I. geophila</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
<caption doi="10.3897/zookeys.945.51860.figure60" httpUri="https://binary.pensoft.net/fig/428170" pageId="0" pageNumber="99" start="Figure 60" startId="F12">
|
||
<paragraph pageId="0" pageNumber="99">
|
||
<emphasis bold="true" pageId="0" pageNumber="99">Figure 60.</emphasis>
|
||
<taxonomicName baseAuthorityName="Axelson" baseAuthorityYear="1900" class="Collembola" family="Isotomidae" genus="Hemisotoma" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hemisotoma thermophila" order="Entomobryomorpha" pageId="0" pageNumber="99" phylum="Arthropoda" rank="species" species="thermophila">
|
||
<emphasis italics="true" pageId="0" pageNumber="99">Hemisotoma thermophila</emphasis>
|
||
</taxonomicName>
|
||
, Abd. V-VI. Abbreviations: f foil chaeta, ss s-chaeta.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |