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<document ID-DOI="http://dx.doi.org/10.3897/asp.81.e104522" ID-Pensoft-Pub="1864-8312-81-781" ID-Pensoft-UUID="797088F6A4AE5FB085EE391038CA3939" ID-ZooBank="9A2C797371274C109871513B59D1CF84" ModsDocID="1864-8312-81-781" checkinTime="1695177545609" checkinUser="pensoft" docAuthor="Schneider, Clement &amp; D'Haese, Cyrille A." docDate="2023" docId="9101A9F1D70C520D8B7ECC95358C6987" docLanguage="en" docName="ArthropodSystPhyl 81: 781-799" docOrigin="Arthropod Systematics &amp; amp; Phylogeny 81" docPubDate="2023-09-19" docSource="http://dx.doi.org/10.3897/asp.81.e104522" docTitle="Mackenziella psocoides Hammer 1953" docType="treatment" docVersion="1" id="797088F6A4AE5FB085EE391038CA3939" lastPageNumber="781" masterDocId="797088F6A4AE5FB085EE391038CA3939" masterDocTitle="Breakaway from a globular body shape: molecular phylogeny reveals the evolutionary history of the enigmatic springtail Mackenziella psocoides" masterLastPageNumber="799" masterPageNumber="781" pageNumber="781" updateTime="1695177545609" updateUser="pensoft">
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<mods:title id="FF41BF578B2CBEA90AE9EEA0EE012F25">Breakaway from a globular body shape: molecular phylogeny reveals the evolutionary history of the enigmatic springtail Mackenziella psocoides</mods:title>
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<mods:name id="023848E564EB816E4A97742E1C77F530" type="personal">
<mods:role id="855D013B0D45D06E86BCD37BCF8CFE54">
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<mods:namePart id="00AF9695E863BC3A0368EC98B3FE3EA3">Schneider, Clement</mods:namePart>
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<mods:affiliation id="B4ECABE974CE934A809786B330A9CAC8">Abteilung Bodenzoologie, Senckenberg Gesellschaft fuer Naturforschung, Goerlitz, Germany</mods:affiliation>
<mods:nameIdentifier id="CD7E7E2A4C16F98A9EAEA880DC6DEB34" type="email">clement.schneider@senckenberg.de</mods:nameIdentifier>
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<mods:namePart id="B92F205AE04749D0999798C80E58270F">D'Haese, Cyrille A.</mods:namePart>
<mods:affiliation id="F273343A4BEB743ADF9B206C28D15D44">MECADEV, UMR 7179 CNRS MNHN, Museum national d'Histoire naturelle, Paris, France</mods:affiliation>
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<mods:title id="7EA35876FFEFA6AFD6185CBF7597B4EC">Arthropod Systematics &amp; amp; Phylogeny</mods:title>
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<treatment id="9101A9F1D70C520D8B7ECC95358C6987" LSID="urn:lsid:plazi:treatment:9101A9F1D70C520D8B7ECC95358C6987" httpUri="http://treatment.plazi.org/id/9101A9F1D70C520D8B7ECC95358C6987" lastPageNumber="781" pageId="0" pageNumber="781">
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<paragraph id="19FB318776650A7D62E30185092E2B80" pageId="0" pageNumber="781">
<taxonomicName id="F8454EA2CDA42F497696BF34DAE771FE" LSID="9101A9F1-D70C-520D-8B7E-CC95358C6987" authority="Hammer, 1953" authorityName="Hammer" authorityYear="1953" class="Collembola" family="Mackenziellidae" genus="Mackenziella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mackenziella psocoides" order="Collembola" pageId="0" pageNumber="781" phylum="Arthropoda" rank="species" species="psocoides">Mackenziella psocoides Hammer, 1953</taxonomicName>
</paragraph>
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<subSubSection id="3D6F05D0894EE39789B60EB03BB46190" pageId="0" pageNumber="781" type="materials_examined">
<paragraph id="7B62156B665391DA69E0D0851152984D" pageId="0" pageNumber="781">Material examined for morphology.</paragraph>
<paragraph id="61F80DB7FFC330811C4A67549E869BF6" pageId="0" pageNumber="781">
<materialsCitation id="F093E490A9A50B9F3F986D49CB84C285" accessionNumber="EA060065, EA060066, EA062721 and EA062722" collectingDate="2023-02-12" collectingMethod="extracted with Berlese funnel" collectorName="C. Schneider, Senckenberg Museum, Naturkunde Goerlitz, Three, Museum National d'Histoire Naturelle, Paris" country="Germany" county="Eight" elevation="210" latitude="51.0689" location="Goerlitz" longLatPrecision="6" longitude="14.934" municipality="Tauchritz" specimenCount="three" specimenCount-female="1" specimenCount-male="2" stateProvince="Saxony">
<collectingCounty id="560EAB551B602CC417F501343A551A58">Eight</collectingCounty>
females and
<specimenCount id="F203111A620C25A8511A4CC554F01367" type="male">three males</specimenCount>
on eleven slides;
<collectingCountry id="77A99812E4E4345C09987C810AA22022" name="Germany">Germany</collectingCountry>
,
<collectingRegion id="27A68BEB266402A4D6644FD2D744A09A" country="Germany" name="Sachsen">Saxony</collectingRegion>
,
<collectingMunicipality id="4329C7888D34AB2ABA0B60A8E8EA96FE">Tauchritz</collectingMunicipality>
near
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<location id="92CD158BEB43762E447125136D63F4E6" LSID="urn:lsid:plazi:treatment:9101A9F1D70C520D8B7ECC95358C6987:92CD158BEB43762E447125136D63F4E6" country="Germany" county="Eight" latitude="51.0689" longLatPrecision="6" longitude="14.934" municipality="Tauchritz" name="Goerlitz" stateProvince="Saxony">Goerlitz</location>
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;
<geoCoordinate id="7F374FF7335B1B668E9CD57515589BF3" degrees="51.0689" direction="north" orientation="latitude" precision="5" value="51.0689">51.0689°N</geoCoordinate>
,
<geoCoordinate id="407DB9B1B2A88A4E9454231FB3C81C21" degrees="14.9340" direction="east" orientation="longitude" precision="5" value="14.934">14.9340°E</geoCoordinate>
, alt.
<quantity id="673003D90DAEE859DCFB32BC89A2F5FB" metricMagnitude="2" metricUnit="m" metricValue="2.1" unit="m" value="210.0">
<elevation id="84A2F8E2307DBAB224AC16C74787FF80" metricMagnitude="2" metricUnit="m" metricValue="2.1" unit="m" value="210.0">210 m</elevation>
</quantity>
;
<collectingDate id="85B04575283E191C30A80FEF4860E9D2" value="2023-02-12">12 Feb. 2023</collectingDate>
;
<collectorName id="4B492F3121B8B718E5E77A48471C30CF">C. Schneider</collectorName>
leg.; mosses and shallow substrate on a concrete slab;
<collectingMethod id="66F28A3B9BBE5184C3060BCAF9F1275B">extracted with Berlese funnel</collectingMethod>
; deposited in the
<taxonomicName id="C618BF8FCD13B0484B7326E141C5FCE5" kingdom="Animalia" lsidName="" pageId="0" pageNumber="781" rank="subClass" subClass="Apterygota">Apterygota</taxonomicName>
collection of the
<collectorName id="C705ABD1FA806ABDFA98DFC1DFE405D9">Senckenberg Museum</collectorName>
<normalizedToken id="C29140C30E19CF095F6D4425CA70BD19" originalValue="für">fuer</normalizedToken>
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Naturkunde
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</collectorName>
; slides number AA00001 to AA00011.
<collectorName id="C08F50DE22DE83AE56F8AD3A834912EE">Three</collectorName>
females and a male on four slides;
<specimenCount id="F27ACE9FCD5A416CC4001CBF75D6D99D" type="female">two females</specimenCount>
and
<specimenCount id="1C46CD7B2EB5C6029C49E4B21B6BA0A0" type="male">three males</specimenCount>
on a SEM mount plate; same data as above; deposited in the
<taxonomicName id="94FDA086A1F12A5B84C0A03B3075D45C" kingdom="Animalia" lsidName="" pageId="0" pageNumber="781" rank="subClass" subClass="Apterygota">Apterygota</taxonomicName>
collection of the
<collectorName id="773BFC7106340E156CE8E8771FAC8C82">
<normalizedToken id="B518699202A8F4C6F173DF01C4740DAA" originalValue="Muséum">Museum</normalizedToken>
National
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Naturelle
</collectorName>
,
<collectorName id="F4A7867675A17ACCC0433E698DE01FD1">Paris</collectorName>
; slides number
<accessionNumber id="1BD4E478CA22A8E57DF8E55B1EC96676" isEnumeration="true">EA060065, EA060066, EA062721 and EA062722</accessionNumber>
</materialsCitation>
,
<materialsCitation id="306A7A4C4E6572C95FC6419751B2CA3E" accessionNumber="EA030050" collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="Germany" specimenCount="1" stateProvince="Sachsen">
SEM plate number
<accessionNumber id="F09544945B06A4452D44045BE3CEBA20" httpUri="http://www.ncbi.nlm.nih.gov/nucleotide/EA030050">EA030050</accessionNumber>
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="BCC01A9E1852D9E3158FF55B92E1EC2E" pageId="0" pageNumber="781" type="description">
<paragraph id="0305C631F1900E534D7232E348A0113C" pageId="0" pageNumber="781">Additional description.</paragraph>
<paragraph id="ABCFCD1C618BCC597686C4A975526F6F" pageId="0" pageNumber="781">
Our specimens are very similar to the descriptions of
<bibRefCitation id="DAEFA30B67756F7F324C6E67B1C761DA" author="Fjellberg, A" editor="Dallai, R" journalOrPublisher="University of Siena, Siena" pageId="0" pageNumber="781" pagination="93 - 105" refId="B14" refString="Fjellberg, A, 1989. Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae). In: Dallai, R, Ed., 3ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989. University of Siena, Siena: 93 - 105" title="Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae)." volumeTitle="3 ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989." year="1989">Fjellberg (1989</bibRefCitation>
,
<bibRefCitation id="7484191DE7B752E1AC8730C9E357CCEC" author="Fjellberg, A" journalOrPublisher="Zoologischer Anzeiger" pageId="0" pageNumber="781" pagination="309 - 330" refId="B16" refString="Fjellberg, A, 1998b. The Labial Palp in Collembola. Zoologischer Anzeiger 237: 309 - 330" title="The Labial Palp in Collembola." volume="237" year="1998 b">1998b</bibRefCitation>
,
<bibRefCitation id="A9731126D0D35FF3674BD7D5BB0ED80A" author="Fjellberg, A" journalOrPublisher="Fauna Entomologica Scandinavia" pageId="0" pageNumber="781" pagination="1 - 264" refId="B17" refString="Fjellberg, A, 2007. Collembola of Fennoscandia and Denmark. Part II: Entomobryomorpha and Symphypleona. Fauna Entomologica Scandinavia 42: 1 - 264" title="Collembola of Fennoscandia and Denmark. Part II: Entomobryomorpha and Symphypleona." volume="42" year="2007">2007</bibRefCitation>
), which we do not intend to fully repeat here. Nonetheless, we report a few additional observations and precisions.
</paragraph>
</subSubSection>
<subSubSection id="4BF53B4C5F77BF680412A3BDA49F5D9B" pageId="0" pageNumber="781" type="habitus as in figs 1dk, 3ae">
<paragraph id="A6D0469C683E37F1A2E4FEE89B538440" pageId="0" pageNumber="781">Habitus as in Figs 1D-K, 3A-E.</paragraph>
<paragraph id="98F683C10707E687AC19EE76286CD81F" pageId="0" pageNumber="781">
Male with a higher ratio length head/trunk than female (Fig.
<figureCitation id="66A716FE74FDE46E3C47AC8103C46787" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Mackenziella psocoides habitus SEM microphotographs. A dorsal view, female, B ventral view, female, C dorsal view, male, D lateral view, male, E frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50 µm." figureDoi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781">3A-D</figureCitation>
). Clypeal area reduced (Figs
<figureCitation id="084E7D000FA11F29F551A5C76C91DA43" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Mackenziella psocoides habitus SEM microphotographs. A dorsal view, female, B ventral view, female, C dorsal view, male, D lateral view, male, E frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50 µm." figureDoi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781">3E</figureCitation>
,
<figureCitation id="BEAE5447CC791F02AAC6E6B055903766" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Mackenziella psocoides SEM microphotographs. A head frontal view, male, B eyes, A, B, C, E, F, G, H - ocelli, Oc - ocular chaeta, C mouth, A, B, C, D, E - labial palp apical papillae, a 1, b 2, b 4, d 1, d 2, d 4, e - labial palp guard chaetae, e - labial palp guard chaetae. D ventral tube." figureDoi="10.3897/asp.81.e104522.figure5" httpUri="https://binary.pensoft.net/fig/907999" pageId="0" pageNumber="781">5A</figureCitation>
). Dorsally on head, with a deep transverse groove posterior to the eyes (Fig.
<figureCitation id="5B25131C6E39B8F63AECDDB4ED12117C" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Mackenziella psocoides habitus SEM microphotographs. A dorsal view, female, B ventral view, female, C dorsal view, male, D lateral view, male, E frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50 µm." figureDoi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781">3A, C, D</figureCitation>
). With a dorsal bulge b at the head-Th. I insertion (Fig.
<figureCitation id="FA10906FD183B10EE92E3B9BDEA31D42" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Mackenziella psocoides habitus SEM microphotographs. A dorsal view, female, B ventral view, female, C dorsal view, male, D lateral view, male, E frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50 µm." figureDoi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781">3A, D</figureCitation>
). With four dorsal bulges corresponding to Th. II-Abd. III, well-marked in either living, ethanol preserved and dried specimens (Figs
<figureCitation id="E49D0BFF908F2282B9CFA42FE947CB74" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Sampled species of Sminthurididae A Sminthurides aquaticus, B Stenacidia violacea, C Sphaeridia pumilis. Mackenziella psocoides D Male (left) and female (right) during courtship (fixed in ethanol), E juvenile, F, G, H, I female on water surface, various angles, J female (one of the largest specimens obtained), K Mackenziella psocoides (left) and a co-occurring young Sphaeridia pumilis (right)." figureDoi="10.3897/asp.81.e104522.figure1" httpUri="https://binary.pensoft.net/fig/907995" pageId="0" pageNumber="781">1D-J</figureCitation>
,
<figureCitation id="EE89B0AA0E6B1B31A212D4440A805A48" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Mackenziella psocoides habitus SEM microphotographs. A dorsal view, female, B ventral view, female, C dorsal view, male, D lateral view, male, E frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50 µm." figureDoi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781">3A, C, D</figureCitation>
), but almost erased in lactic-acid induced swollen specimens. Abd. I and II bulges well-marked in male, but faint in female (Fig.
<figureCitation id="EBA961D8B38E3840DB39DC358BA4F797" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Mackenziella psocoides habitus SEM microphotographs. A dorsal view, female, B ventral view, female, C dorsal view, male, D lateral view, male, E frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50 µm." figureDoi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781">3A, C, D</figureCitation>
). Abd. IV delimited from Abd. V by a faint groove (Fig.
<figureCitation id="C82F0343C6F239F94A0F103EB42BF8DF" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Mackenziella psocoides habitus SEM microphotographs. A dorsal view, female, B ventral view, female, C dorsal view, male, D lateral view, male, E frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50 µm." figureDoi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781">3A, C, D</figureCitation>
). Dorsally, Abd. III + IV region twice as long as Abd. I + II. Ventrally, retinaculum (Abd. III appendage) at mid-distance between the ventral tube (Abd. I) and the furca (Abd. IV appendage). Furca short, barely reaching the posterior side of the ventral tube when folded.
</paragraph>
<caption id="A0F6C91C1F02C0DF8D01AB3E0622F492" doi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781" start="Figure 3" startId="F3">
<paragraph id="661050A9D8037534B7DE5A4FC106E29B" pageId="0" pageNumber="781">
<emphasis id="C1AA27FC92ABFE77D8776376CC9F351C" bold="true" pageId="0" pageNumber="781">Figure 3.</emphasis>
<taxonomicName id="B0CD31BC348FC26A78C5EF5CE572FE30" authorityName="Hammer" authorityYear="1953" class="Collembola" family="Mackenziellidae" genus="Mackenziella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mackenziella psocoides" order="Collembola" pageId="0" pageNumber="781" phylum="Arthropoda" rank="species" species="psocoides">
<emphasis id="38E163D9B34CA483B32AAD8F9575818D" italics="true" pageId="0" pageNumber="781">Mackenziella psocoides</emphasis>
</taxonomicName>
habitus SEM microphotographs.
<emphasis id="02AA9FA7375FAA8066D7FF57BD2C4C79" bold="true" pageId="0" pageNumber="781">A</emphasis>
dorsal view, female,
<emphasis id="327BAD18A431F04931E3194479C94C6F" bold="true" pageId="0" pageNumber="781">B</emphasis>
ventral view, female,
<emphasis id="9A8FDC0B572A81AD54B23F0B07333E2E" bold="true" pageId="0" pageNumber="781">C</emphasis>
dorsal view, male,
<emphasis id="C0E1EFF9856E876DE2D27C55F9D16BB2" bold="true" pageId="0" pageNumber="781">D</emphasis>
lateral view, male,
<emphasis id="E2FD90BEB1248E964872C3B1158AA43B" bold="true" pageId="0" pageNumber="781">E</emphasis>
frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50
<normalizedToken id="BF165C670C04E58D4576928AC6F486BD" originalValue="µm">µm</normalizedToken>
.
</paragraph>
</caption>
</subSubSection>
<subSubSection id="59CDF97D7FED8C882AE258915E1CAF03" pageId="0" pageNumber="781" type="integument">
<paragraph id="DBF6DFC8AC7F516D0A272EB709D302D0" pageId="0" pageNumber="781">Integument.</paragraph>
<paragraph id="EE9D0803B1427AFBE609C23FB837DF48" pageId="0" pageNumber="781">
Integumentary secondary granules resulting from simple and individual outgrown primary granules (increased in size and elevated above the ordinary primary grain) (Fig.
<figureCitation id="438ADA49EB11A18F4C456DA1434FD14F" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Mackenziella psocoides SEM microphotographs. A Abdominal segment V and VI (anal valves), female, B tibiotarsus I ventral view, C tibiotarsus II dorso-lateral view, D tibiotarsus III ventral view, E Abd. III middorsal tubercle with first pair of axial chaetae, F Abd. II sensillum in a depression on a papilla, male. Abbreviations: s - sensillae, ae, ai, e, i, ja, jp, pe, pi - tibiotarsus chaetae, I, II, IV - tibiotarsus chaetae row." figureDoi="10.3897/asp.81.e104522.figure6" httpUri="https://binary.pensoft.net/fig/908000" pageId="0" pageNumber="781">6E</figureCitation>
). Presence limited to: postantennal area dorsally to the eyes (Fig.
<figureCitation id="DB08B14FFC69E9FC80D9CD4BDF89DFC1" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Mackenziella psocoides SEM microphotographs. A head frontal view, male, B eyes, A, B, C, E, F, G, H - ocelli, Oc - ocular chaeta, C mouth, A, B, C, D, E - labial palp apical papillae, a 1, b 2, b 4, d 1, d 2, d 4, e - labial palp guard chaetae, e - labial palp guard chaetae. D ventral tube." figureDoi="10.3897/asp.81.e104522.figure5" httpUri="https://binary.pensoft.net/fig/907999" pageId="0" pageNumber="781">5A, B</figureCitation>
), head-Th. I dorsal bulge, dorsal and lateral part of Th. II-Abd. V (Figs
<figureCitation id="7EF98B182AB45E93E47A52BD03781A5E" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Mackenziella psocoides habitus SEM microphotographs. A dorsal view, female, B ventral view, female, C dorsal view, male, D lateral view, male, E frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50 µm." figureDoi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781">3A, C, D</figureCitation>
,
<figureCitation id="93F7395D4873723958B8C347BDDB08BC" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Mackenziella psocoides SEM microphotographs. A Abdominal segment V and VI (anal valves), female, B tibiotarsus I ventral view, C tibiotarsus II dorso-lateral view, D tibiotarsus III ventral view, E Abd. III middorsal tubercle with first pair of axial chaetae, F Abd. II sensillum in a depression on a papilla, male. Abbreviations: s - sensillae, ae, ai, e, i, ja, jp, pe, pi - tibiotarsus chaetae, I, II, IV - tibiotarsus chaetae row." figureDoi="10.3897/asp.81.e104522.figure6" httpUri="https://binary.pensoft.net/fig/908000" pageId="0" pageNumber="781">6A</figureCitation>
). Absent from clypeal area and mouth part (Fig.
<figureCitation id="4C842E10807BD8AB247300BCB5B9837F" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Mackenziella psocoides SEM microphotographs. A head frontal view, male, B eyes, A, B, C, E, F, G, H - ocelli, Oc - ocular chaeta, C mouth, A, B, C, D, E - labial palp apical papillae, a 1, b 2, b 4, d 1, d 2, d 4, e - labial palp guard chaetae, e - labial palp guard chaetae. D ventral tube." figureDoi="10.3897/asp.81.e104522.figure5" httpUri="https://binary.pensoft.net/fig/907999" pageId="0" pageNumber="781">5A</figureCitation>
) and from all appendages. Dorso-median line of Th. II-Abd. III not marked, but terminal tubercle t present as a roundish prominence without secondary granules (Figs
<figureCitation id="0194865AFF846F2EC67A24DA0D76D64F" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Mackenziella psocoides habitus SEM microphotographs. A dorsal view, female, B ventral view, female, C dorsal view, male, D lateral view, male, E frontal view, male. Abbreviations: b - head-Th. I bulge, t - integumental tubercle, s - sensillae in a depression on a papilla. Scale bars: 50 µm." figureDoi="10.3897/asp.81.e104522.figure3" httpUri="https://binary.pensoft.net/fig/907997" pageId="0" pageNumber="781">3A</figureCitation>
,
<figureCitation id="D2F904F20ABB4947379FAA29C72FA528" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Mackenziella psocoides SEM microphotographs. A Abdominal segment V and VI (anal valves), female, B tibiotarsus I ventral view, C tibiotarsus II dorso-lateral view, D tibiotarsus III ventral view, E Abd. III middorsal tubercle with first pair of axial chaetae, F Abd. II sensillum in a depression on a papilla, male. Abbreviations: s - sensillae, ae, ai, e, i, ja, jp, pe, pi - tibiotarsus chaetae, I, II, IV - tibiotarsus chaetae row." figureDoi="10.3897/asp.81.e104522.figure6" httpUri="https://binary.pensoft.net/fig/908000" pageId="0" pageNumber="781">6E</figureCitation>
).
<taxonomicName id="E3ED7AFB76EAF4F4AADD65CA3B85DC5F" class="Insecta" family="Pentatomidae" genus="Linea" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Linea ventralis" order="Hemiptera" pageId="0" pageNumber="781" phylum="Arthropoda" rank="species" species="ventralis">
<emphasis id="B98942BD8B2515505880178915CDF413" italics="true" pageId="0" pageNumber="781">Linea ventralis</emphasis>
</taxonomicName>
straight, without additional integumentary channels (Fig.
<figureCitation id="29B960C2C28049D53F3850373A991596" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Mackenziella psocoides. A Linea ventralis, arrows indicate the ventral tubercles, B male ant. II and III (clasping organ), posterior side. Antennae SEM microphotographs. C right antenna dorsal view, female, D tip of antennal segment IV, female, E left antenna fronto-ventral view, male, F right antenna dorsal view, male. Abbreviations: B 1 - chaeta b 1, C 3 - chaeta c 3, m - microelement setiform, ms - microelement spine-like, p - Ant. III organ deep lateral pit, s - Ant. III organ sensillum (one very small, one larger), S - Ant. III large s-chaetae with rounded apex." figureDoi="10.3897/asp.81.e104522.figure4" httpUri="https://binary.pensoft.net/fig/907998" pageId="0" pageNumber="781">4A</figureCitation>
), associated with three pairs of tubercles (Fig.
<figureCitation id="19DE84958C79BB898813B8659CE29AB3" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Mackenziella psocoides. A Linea ventralis, arrows indicate the ventral tubercles, B male ant. II and III (clasping organ), posterior side. Antennae SEM microphotographs. C right antenna dorsal view, female, D tip of antennal segment IV, female, E left antenna fronto-ventral view, male, F right antenna dorsal view, male. Abbreviations: B 1 - chaeta b 1, C 3 - chaeta c 3, m - microelement setiform, ms - microelement spine-like, p - Ant. III organ deep lateral pit, s - Ant. III organ sensillum (one very small, one larger), S - Ant. III large s-chaetae with rounded apex." figureDoi="10.3897/asp.81.e104522.figure4" httpUri="https://binary.pensoft.net/fig/907998" pageId="0" pageNumber="781">4A</figureCitation>
). Males without vesicles on Th. III.
</paragraph>
<caption id="B5E1DEEAAAB8BDEDA79161E458C1AA77" doi="10.3897/asp.81.e104522.figure4" httpUri="https://binary.pensoft.net/fig/907998" pageId="0" pageNumber="781" start="Figure 4" startId="F4">
<paragraph id="A408B9C8FBCD1BD683833749FA2551E0" pageId="0" pageNumber="781">
<emphasis id="52C788355AC4ABDF5B9C53F578060202" bold="true" pageId="0" pageNumber="781">Figure 4.</emphasis>
<taxonomicName id="3E31C0915F45E3FC23CCCACCA8211CA8" authorityName="Hammer" authorityYear="1953" class="Collembola" family="Mackenziellidae" genus="Mackenziella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mackenziella psocoides" order="Collembola" pageId="0" pageNumber="781" phylum="Arthropoda" rank="species" species="psocoides">
<emphasis id="81D36389BB29BEFB973A0D9DBA6FE6EB" italics="true" pageId="0" pageNumber="781">Mackenziella psocoides</emphasis>
</taxonomicName>
.
<emphasis id="F8F76F2B7140399586F7339BB1344092" bold="true" pageId="0" pageNumber="781">A</emphasis>
<taxonomicName id="6B6F879EBD962AC68DE25551676EF68B" class="Insecta" family="Pentatomidae" genus="Linea" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Linea ventralis" order="Hemiptera" pageId="0" pageNumber="781" phylum="Arthropoda" rank="species" species="ventralis">
<emphasis id="B83F5BDD1C23096250D57D300E84CB31" italics="true" pageId="0" pageNumber="781">Linea ventralis</emphasis>
</taxonomicName>
, arrows indicate the ventral tubercles,
<emphasis id="DF47F5D4B16EA29C82CA19FC957F62C1" bold="true" pageId="0" pageNumber="781">B</emphasis>
male ant. II and III (clasping organ), posterior side. Antennae SEM microphotographs.
<emphasis id="8318D74A8C667105AC9CC9E91F8CFB0C" bold="true" pageId="0" pageNumber="781">C</emphasis>
right antenna dorsal view, female,
<emphasis id="020F54F62254F7DDB16275F20C5476FB" bold="true" pageId="0" pageNumber="781">D</emphasis>
tip of antennal segment IV, female,
<emphasis id="9A85FB05B72B591354BD14C6C76C457C" bold="true" pageId="0" pageNumber="781">E</emphasis>
left antenna fronto-ventral view, male,
<emphasis id="11BD838C4A04B65B896D9A64EFE5DDA6" bold="true" pageId="0" pageNumber="781">F</emphasis>
right antenna dorsal view, male. Abbreviations: B1 - chaeta b1, C3 - chaeta c3, m - microelement setiform, ms - microelement spine-like, p - Ant. III organ deep lateral pit, s - Ant. III organ sensillum (one very small, one larger), S - Ant. III large s-chaetae with rounded apex.
</paragraph>
</caption>
<caption id="E9458465607CB03A70C66EF76ECE4E48" doi="10.3897/asp.81.e104522.figure5" httpUri="https://binary.pensoft.net/fig/907999" pageId="0" pageNumber="781" start="Figure 5" startId="F5">
<paragraph id="1D7C8D60E181C7AA33C2305F48769868" pageId="0" pageNumber="781">
<emphasis id="DE3B56AF4A075428AFC8646BD8C4CA59" bold="true" pageId="0" pageNumber="781">Figure 5.</emphasis>
<taxonomicName id="4FD5A244220F73D0211B19B905242C56" authorityName="Hammer" authorityYear="1953" class="Collembola" family="Mackenziellidae" genus="Mackenziella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mackenziella psocoides" order="Collembola" pageId="0" pageNumber="781" phylum="Arthropoda" rank="species" species="psocoides">
<emphasis id="EBF6F7D2E531E102373EC229F36657DE" italics="true" pageId="0" pageNumber="781">Mackenziella psocoides</emphasis>
</taxonomicName>
SEM microphotographs.
<emphasis id="01B73EE6D44D2B34E9AAD57C15CC7CD2" bold="true" pageId="0" pageNumber="781">A</emphasis>
head frontal view, male,
<emphasis id="423963296CEE132154EA7FCDBCBAB887" bold="true" pageId="0" pageNumber="781">B</emphasis>
eyes, A, B, C, E, F, G, H - ocelli, Oc - ocular chaeta,
<emphasis id="AD2983356CD4C71C4B352520F3C3D311" bold="true" pageId="0" pageNumber="781">C</emphasis>
mouth, A, B, C, D, E - labial palp apical papillae, a1, b2, b4, d1, d2, d4, e - labial palp guard chaetae, e - labial palp guard chaetae.
<emphasis id="948568EB0320D6AA50FB8CBD8911FB54" bold="true" pageId="0" pageNumber="781">D</emphasis>
ventral tube.
</paragraph>
</caption>
<caption id="FD5F8D14E693C3A832594E640A06759C" doi="10.3897/asp.81.e104522.figure6" httpUri="https://binary.pensoft.net/fig/908000" pageId="0" pageNumber="781" start="Figure 6" startId="F6">
<paragraph id="24C043430D53916C6E31E7E20F2FB600" pageId="0" pageNumber="781">
<emphasis id="1837A8F956E29AB6A7CB61423E3F1D77" bold="true" pageId="0" pageNumber="781">Figure 6.</emphasis>
<taxonomicName id="B8507B5AD27DBC88C490441221349AB3" authorityName="Hammer" authorityYear="1953" class="Collembola" family="Mackenziellidae" genus="Mackenziella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mackenziella psocoides" order="Collembola" pageId="0" pageNumber="781" phylum="Arthropoda" rank="species" species="psocoides">
<emphasis id="8D3DA8854878C6615AD16B84D0BF83AE" italics="true" pageId="0" pageNumber="781">Mackenziella psocoides</emphasis>
</taxonomicName>
SEM microphotographs.
<emphasis id="2A6612CAC80EB305047C1FE54059187F" bold="true" pageId="0" pageNumber="781">A</emphasis>
Abdominal segment V and VI (anal valves), female,
<emphasis id="91B8805C2EDD6B613DEE6CDA834720B3" bold="true" pageId="0" pageNumber="781">B</emphasis>
tibiotarsus I ventral view,
<emphasis id="61C100260DEDF855B2B9D3CFD313103E" bold="true" pageId="0" pageNumber="781">C</emphasis>
tibiotarsus II dorso-lateral view,
<emphasis id="3F94A985F5A84D531A1101796C645869" bold="true" pageId="0" pageNumber="781">D</emphasis>
tibiotarsus III ventral view,
<emphasis id="90F5028156EEC05CD184EB8D3F55CE2C" bold="true" pageId="0" pageNumber="781">E</emphasis>
Abd. III middorsal tubercle with first pair of axial chaetae,
<emphasis id="E5DB2DF6C7F60D5A7904370173CF0DF4" bold="true" pageId="0" pageNumber="781">F</emphasis>
Abd. II sensillum in a depression on a papilla, male. Abbreviations: s - sensillae, ae, ai, e, i, ja, jp, pe, pi - tibiotarsus chaetae, I, II, IV - tibiotarsus chaetae row.
</paragraph>
</caption>
</subSubSection>
<subSubSection id="31B92378310F0ED924380C25B800EA2F" pageId="0" pageNumber="781" type="antennae">
<paragraph id="1A5123D9650E2BFEB97D79D20070CF8C" pageId="0" pageNumber="781">Antennae.</paragraph>
<paragraph id="D1243BA58A8FE3C9FA2FCAF2165DB633" pageId="0" pageNumber="781">
Chaetae smooth, without ornamentation (Fig.
<figureCitation id="C3C0CB1484580DF1BB467C266E702B4F" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Mackenziella psocoides. A Linea ventralis, arrows indicate the ventral tubercles, B male ant. II and III (clasping organ), posterior side. Antennae SEM microphotographs. C right antenna dorsal view, female, D tip of antennal segment IV, female, E left antenna fronto-ventral view, male, F right antenna dorsal view, male. Abbreviations: B 1 - chaeta b 1, C 3 - chaeta c 3, m - microelement setiform, ms - microelement spine-like, p - Ant. III organ deep lateral pit, s - Ant. III organ sensillum (one very small, one larger), S - Ant. III large s-chaetae with rounded apex." figureDoi="10.3897/asp.81.e104522.figure4" httpUri="https://binary.pensoft.net/fig/907998" pageId="0" pageNumber="781">4B-F</figureCitation>
). Most of the long chaetae of Ant. IV with a rounded apex (Fig.
<figureCitation id="EE7EB92A388161F00849D14846ED3AAE" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Mackenziella psocoides. A Linea ventralis, arrows indicate the ventral tubercles, B male ant. II and III (clasping organ), posterior side. Antennae SEM microphotographs. C right antenna dorsal view, female, D tip of antennal segment IV, female, E left antenna fronto-ventral view, male, F right antenna dorsal view, male. Abbreviations: B 1 - chaeta b 1, C 3 - chaeta c 3, m - microelement setiform, ms - microelement spine-like, p - Ant. III organ deep lateral pit, s - Ant. III organ sensillum (one very small, one larger), S - Ant. III large s-chaetae with rounded apex." figureDoi="10.3897/asp.81.e104522.figure4" httpUri="https://binary.pensoft.net/fig/907998" pageId="0" pageNumber="781">4C-E</figureCitation>
). Male also with two long s-chaetae with rounded apex on Ant. III and three on Ant. II (Fig.
<figureCitation id="C4792E122F37951646206507F9EB8465" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Mackenziella psocoides. A Linea ventralis, arrows indicate the ventral tubercles, B male ant. II and III (clasping organ), posterior side. Antennae SEM microphotographs. C right antenna dorsal view, female, D tip of antennal segment IV, female, E left antenna fronto-ventral view, male, F right antenna dorsal view, male. Abbreviations: B 1 - chaeta b 1, C 3 - chaeta c 3, m - microelement setiform, ms - microelement spine-like, p - Ant. III organ deep lateral pit, s - Ant. III organ sensillum (one very small, one larger), S - Ant. III large s-chaetae with rounded apex." figureDoi="10.3897/asp.81.e104522.figure4" httpUri="https://binary.pensoft.net/fig/907998" pageId="0" pageNumber="781">4B, E, F</figureCitation>
); ms on Ant. III as a microchaetae (Fig.
<figureCitation id="6EC06EEE8330E8A3EE646EF7C54796A3" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Mackenziella psocoides. A Linea ventralis, arrows indicate the ventral tubercles, B male ant. II and III (clasping organ), posterior side. Antennae SEM microphotographs. C right antenna dorsal view, female, D tip of antennal segment IV, female, E left antenna fronto-ventral view, male, F right antenna dorsal view, male. Abbreviations: B 1 - chaeta b 1, C 3 - chaeta c 3, m - microelement setiform, ms - microelement spine-like, p - Ant. III organ deep lateral pit, s - Ant. III organ sensillum (one very small, one larger), S - Ant. III large s-chaetae with rounded apex." figureDoi="10.3897/asp.81.e104522.figure4" httpUri="https://binary.pensoft.net/fig/907998" pageId="0" pageNumber="781">4B, F</figureCitation>
) (otherwise as described in
<bibRefCitation id="9C19BBA6873851542710E6A70740B82B" author="Fjellberg, A" editor="Dallai, R" journalOrPublisher="University of Siena, Siena" pageId="0" pageNumber="781" pagination="93 - 105" refId="B14" refString="Fjellberg, A, 1989. Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae). In: Dallai, R, Ed., 3ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989. University of Siena, Siena: 93 - 105" title="Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae)." volumeTitle="3 ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989." year="1989">Fjellberg 1989</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="39D1DD70D55979DA4DCB1CBC1412AC2C" pageId="0" pageNumber="781" type="mouth">
<paragraph id="35766B19B596C226892ADD1A55EC9C5A" pageId="0" pageNumber="781">Mouth.</paragraph>
<paragraph id="D66EA64CEB3505859597AF8B5E0E428A" pageId="0" pageNumber="781">
Mouth as in Fig.
<figureCitation id="55CB3B5D010D61F14ECC567DEB039F39" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Mackenziella psocoides SEM microphotographs. A head frontal view, male, B eyes, A, B, C, E, F, G, H - ocelli, Oc - ocular chaeta, C mouth, A, B, C, D, E - labial palp apical papillae, a 1, b 2, b 4, d 1, d 2, d 4, e - labial palp guard chaetae, e - labial palp guard chaetae. D ventral tube." figureDoi="10.3897/asp.81.e104522.figure5" httpUri="https://binary.pensoft.net/fig/907999" pageId="0" pageNumber="781">5C</figureCitation>
, without oral fold nor maxillary outer lobe. Labrum and labium as described in
<bibRefCitation id="19D01B591E5B7322EA033DC5AD2F06B3" author="Fjellberg, A" editor="Dallai, R" journalOrPublisher="University of Siena, Siena" pageId="0" pageNumber="781" pagination="93 - 105" refId="B14" refString="Fjellberg, A, 1989. Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae). In: Dallai, R, Ed., 3ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989. University of Siena, Siena: 93 - 105" title="Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae)." volumeTitle="3 ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989." year="1989">Fjellberg (1989</bibRefCitation>
,
<bibRefCitation id="620C1E5C470A7423704D2578C03312CF" author="Fjellberg, A" journalOrPublisher="Zoologischer Anzeiger" pageId="0" pageNumber="781" pagination="309 - 330" refId="B16" refString="Fjellberg, A, 1998b. The Labial Palp in Collembola. Zoologischer Anzeiger 237: 309 - 330" title="The Labial Palp in Collembola." volume="237" year="1998 b">1998b</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="3FF91A6FAB79829DCBB7F74E64D1136A" pageId="0" pageNumber="781" type="legs">
<paragraph id="6F7BA1735527CF0AA5215F248463EC1C" pageId="0" pageNumber="781">Legs.</paragraph>
<paragraph id="01C3A6D40ED4DD7164027187EBFFE9D7" pageId="0" pageNumber="781">
Tibiotarsus I apical row with chaeta
<emphasis id="D464E40EDFFB1A7EDC6C6560FAE3FF56" italics="true" pageId="0" pageNumber="781">ja</emphasis>
flattened with an external groove, and apressed to the tegument (not erected), on ventral side (Fig.
<figureCitation id="7D99F145D4AFF1069B102830B4C903A6" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Mackenziella psocoides SEM microphotographs. A Abdominal segment V and VI (anal valves), female, B tibiotarsus I ventral view, C tibiotarsus II dorso-lateral view, D tibiotarsus III ventral view, E Abd. III middorsal tubercle with first pair of axial chaetae, F Abd. II sensillum in a depression on a papilla, male. Abbreviations: s - sensillae, ae, ai, e, i, ja, jp, pe, pi - tibiotarsus chaetae, I, II, IV - tibiotarsus chaetae row." figureDoi="10.3897/asp.81.e104522.figure6" httpUri="https://binary.pensoft.net/fig/908000" pageId="0" pageNumber="781">6B</figureCitation>
). Unguis with a dorsal smooth lamella splitted in two basally, the two anterior and posterior halves each joining with a small pseudonichya, the dorsal, basal side of the claw forming a depression covered with primary grain (Fig.
<figureCitation id="AE18AD6814493C434A165E79C62D0223" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Mackenziella psocoides SEM microphotographs. A Abdominal segment V and VI (anal valves), female, B tibiotarsus I ventral view, C tibiotarsus II dorso-lateral view, D tibiotarsus III ventral view, E Abd. III middorsal tubercle with first pair of axial chaetae, F Abd. II sensillum in a depression on a papilla, male. Abbreviations: s - sensillae, ae, ai, e, i, ja, jp, pe, pi - tibiotarsus chaetae, I, II, IV - tibiotarsus chaetae row." figureDoi="10.3897/asp.81.e104522.figure6" httpUri="https://binary.pensoft.net/fig/908000" pageId="0" pageNumber="781">6C</figureCitation>
). Unguiculus I to III respectively with: apical filament, short apical filament, no apical filament (Fig.
<figureCitation id="07E7BFAF7A736B625D0D34290DB567A8" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Mackenziella psocoides SEM microphotographs. A Abdominal segment V and VI (anal valves), female, B tibiotarsus I ventral view, C tibiotarsus II dorso-lateral view, D tibiotarsus III ventral view, E Abd. III middorsal tubercle with first pair of axial chaetae, F Abd. II sensillum in a depression on a papilla, male. Abbreviations: s - sensillae, ae, ai, e, i, ja, jp, pe, pi - tibiotarsus chaetae, I, II, IV - tibiotarsus chaetae row." figureDoi="10.3897/asp.81.e104522.figure6" httpUri="https://binary.pensoft.net/fig/908000" pageId="0" pageNumber="781">6B-D</figureCitation>
); unguiculus tri-lamelate, each lamella with a smooth ridge (Fig.
<figureCitation id="1114B26EFF71EB350D423B45AB3FDCE4" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Mackenziella psocoides SEM microphotographs. A Abdominal segment V and VI (anal valves), female, B tibiotarsus I ventral view, C tibiotarsus II dorso-lateral view, D tibiotarsus III ventral view, E Abd. III middorsal tubercle with first pair of axial chaetae, F Abd. II sensillum in a depression on a papilla, male. Abbreviations: s - sensillae, ae, ai, e, i, ja, jp, pe, pi - tibiotarsus chaetae, I, II, IV - tibiotarsus chaetae row." figureDoi="10.3897/asp.81.e104522.figure6" httpUri="https://binary.pensoft.net/fig/908000" pageId="0" pageNumber="781">6B-D</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="3840657E3DBA7311B33E79186A41E9FA" pageId="0" pageNumber="781" type="furca">
<paragraph id="D8625CC74C46A238B546AC9B9A8713F6" pageId="0" pageNumber="781">Furca.</paragraph>
<paragraph id="C835BD9CF623F355960ECAF60F7700AA" pageId="0" pageNumber="781">
Posterior part of dens with up to four chaetae ornamented with spicules (discovered with SEM, apparently smooth in some specimens) (Fig.
<figureCitation id="492AA402112E6BE62A0EA92F0B625202" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Mackenziella psocoides furca SEM microphotographs. A furca anterior side, female; detail: chaetae on lateral side on base of furca, B furca anterior side, female, C furca posterior side, female, D furca posterior side, male, E retinaculum." figureDoi="10.3897/asp.81.e104522.figure7" httpUri="https://binary.pensoft.net/fig/908001" pageId="0" pageNumber="781">7B-D</figureCitation>
). Mucro either separate or fused to the dens (as reported in
<bibRefCitation id="18E1D70D5704959D9D11CC7E519755EA" author="Fjellberg, A" editor="Dallai, R" journalOrPublisher="University of Siena, Siena" pageId="0" pageNumber="781" pagination="93 - 105" refId="B14" refString="Fjellberg, A, 1989. Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae). In: Dallai, R, Ed., 3ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989. University of Siena, Siena: 93 - 105" title="Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae)." volumeTitle="3 ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989." year="1989">Fjellberg 1989</bibRefCitation>
for juveniles), but fused form may be found in apparently mature specimens. Mucro posteriorly without lamellae, anteriorly, with a smooth lamella, either with an inner groove (separate mucro form) or not (fused mucro form). This smooth lamella extending to the apex of the mucro and shaping its rounded tip.
</paragraph>
<caption id="742C453035E7413CF1F78780CFD680BD" doi="10.3897/asp.81.e104522.figure7" httpUri="https://binary.pensoft.net/fig/908001" pageId="0" pageNumber="781" start="Figure 7" startId="F7">
<paragraph id="FF77C9E5AC98400DBCFE64D477305C4A" pageId="0" pageNumber="781">
<emphasis id="D9360AE0ECCAEBE1673BDA1E00FAF9FE" bold="true" pageId="0" pageNumber="781">Figure 7.</emphasis>
<taxonomicName id="D45D93A7FFFBBE017A72477196B29793" authorityName="Hammer" authorityYear="1953" class="Collembola" family="Mackenziellidae" genus="Mackenziella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Mackenziella psocoides" order="Collembola" pageId="0" pageNumber="781" phylum="Arthropoda" rank="species" species="psocoides">
<emphasis id="5EBD44AAB2DF3A662B7800165B2F8D32" italics="true" pageId="0" pageNumber="781">Mackenziella psocoides</emphasis>
</taxonomicName>
furca SEM microphotographs.
<emphasis id="62AAAE55C2D51359A96DB56B94722A3E" bold="true" pageId="0" pageNumber="781">A</emphasis>
furca anterior side, female; detail: chaetae on lateral side on base of furca,
<emphasis id="8A884E427B0800FF8AE034AC56A43EB7" bold="true" pageId="0" pageNumber="781">B</emphasis>
furca anterior side, female,
<emphasis id="DA7F6127D340CC8841FD974299A83336" bold="true" pageId="0" pageNumber="781">C</emphasis>
furca posterior side, female,
<emphasis id="E237091B08C58AD283488D23E873D5D5" bold="true" pageId="0" pageNumber="781">D</emphasis>
furca posterior side, male,
<emphasis id="8760E0D84A0D2EE444DD138525C2DB96" bold="true" pageId="0" pageNumber="781">E</emphasis>
retinaculum.
</paragraph>
</caption>
</subSubSection>
<subSubSection id="C76B7CFA5FCE2F322DBDC08C3ADF02BD" pageId="0" pageNumber="781" type="other ventral organs">
<paragraph id="E79BDA3DE6F53C1E91EE4530BAA288C7" pageId="0" pageNumber="781">Other ventral organs.</paragraph>
<paragraph id="9B3005B4B168B180F5DB007D521528EB" pageId="0" pageNumber="781">
Sternite of Abd. IV with a pair of small chaetae (Fig.
<figureCitation id="16BF2A47049C154936920187D57CC451" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Mackenziella psocoides furca SEM microphotographs. A furca anterior side, female; detail: chaetae on lateral side on base of furca, B furca anterior side, female, C furca posterior side, female, D furca posterior side, male, E retinaculum." figureDoi="10.3897/asp.81.e104522.figure7" httpUri="https://binary.pensoft.net/fig/908001" pageId="0" pageNumber="781">7A</figureCitation>
) not mentioned in
<bibRefCitation id="1EFA94EA76696593BFDC5FC315B70981" author="Fjellberg, A" editor="Dallai, R" journalOrPublisher="University of Siena, Siena" pageId="0" pageNumber="781" pagination="93 - 105" refId="B14" refString="Fjellberg, A, 1989. Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae). In: Dallai, R, Ed., 3ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989. University of Siena, Siena: 93 - 105" title="Redescription of Mackenziella psocoides Hammer, 1953 and discussion of its systematic position (Collembola, Mackenziellidae)." volumeTitle="3 ʳᵈ International Seminar on Apterygota, Siena (Italy), 1989." year="1989">Fjellberg (1989)</bibRefCitation>
. This pair of chaetae sometimes missing or incomplete (only on one side). Probably homologous to the ventral-anterior field of chaetae found on Abd. IV of most
<taxonomicName id="E0772F6419B030B0AC44638E6F3BECA9" kingdom="Animalia" lsidName="" order="Collembola" pageId="0" pageNumber="781" rank="subOrder" subOrder="Symphypleona">Symphypleona</taxonomicName>
. Ventral tube of the male simple (Fig.
<figureCitation id="8C1F778403E3F6F227205A588FEDFD8B" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Mackenziella psocoides SEM microphotographs. A head frontal view, male, B eyes, A, B, C, E, F, G, H - ocelli, Oc - ocular chaeta, C mouth, A, B, C, D, E - labial palp apical papillae, a 1, b 2, b 4, d 1, d 2, d 4, e - labial palp guard chaetae, e - labial palp guard chaetae. D ventral tube." figureDoi="10.3897/asp.81.e104522.figure5" httpUri="https://binary.pensoft.net/fig/907999" pageId="0" pageNumber="781">5D</figureCitation>
). Retinaculum simple, with 3+3 teeth and no basal tubercle (Fig.
<figureCitation id="9D3A88C1DAA59E7F139EAD95D53C6B67" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Mackenziella psocoides furca SEM microphotographs. A furca anterior side, female; detail: chaetae on lateral side on base of furca, B furca anterior side, female, C furca posterior side, female, D furca posterior side, male, E retinaculum." figureDoi="10.3897/asp.81.e104522.figure7" httpUri="https://binary.pensoft.net/fig/908001" pageId="0" pageNumber="781">7E</figureCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>