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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.984.57256" ID-GBIF-Dataset="142fb517-e66d-4765-8ab2-ae8604cc1e5a" ID-PMC="PMC7658182" ID-Pensoft-Pub="1313-2970-984-49" ID-Pensoft-UUID="420AF9EA36AE514783744A2A84C7FFD8" ID-PubMed="33223868" ID-ZooBank="5EEF002A60194449B6138A20A4F682C1" ModsDocID="1313-2970-984-49" checkinTime="1604561393676" checkinUser="pensoft" docAuthor="Masan, Peter" docDate="2020" docId="404FB3FB0AFB5A3FAF42FB415EBB4260" docLanguage="en" docName="ZooKeys 984: 49-57" docOrigin="ZooKeys 984" docSource="http://dx.doi.org/10.3897/zookeys.984.57256" docTitle="Dendroseius reductus Mašán 2020, sp. nov." docType="treatment" docUuid="8C144F00-0FF6-4D7C-84AB-11A865AE85E1" docUuidSource="ZooBank" docVersion="4" id="420AF9EA36AE514783744A2A84C7FFD8" lastPageNumber="49" masterDocId="420AF9EA36AE514783744A2A84C7FFD8" masterDocTitle="A new wood-inhabiting mite species of the genus Dendroseius Karg, 1965 (Acari, Mesostigmata, Rhodacaridae) from Central Europe (Slovakia)" masterLastPageNumber="57" masterPageNumber="49" pageNumber="49" updateTime="1668169741158" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>A new wood-inhabiting mite species of the genus Dendroseius Karg, 1965 (Acari, Mesostigmata, Rhodacaridae) from Central Europe (Slovakia)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Masan, Peter</mods:namePart>
<mods:affiliation>Institute of Zoology, Slovak Academy of Sciences, Dubravska cesta 9, 845 - 06 Bratislava, Slovakia</mods:affiliation>
<mods:nameIdentifier type="email">peter.masan@savba.sk</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2020</mods:date>
<mods:detail type="volume">
<mods:number>984</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>49</mods:start>
<mods:end>57</mods:end>
</mods:extent>
</mods:part>
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<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.984.57256</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.984.57256</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-984-49</mods:identifier>
<mods:identifier type="ZooBank">5EEF002A60194449B6138A20A4F682C1</mods:identifier>
<mods:identifier type="Pensoft-UUID">420AF9EA36AE514783744A2A84C7FFD8</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="168756140" LSID="urn:lsid:zoobank.org:act:8C144F00-0FF6-4D7C-84AB-11A865AE85E1" httpUri="http://treatment.plazi.org/id/404FB3FB0AFB5A3FAF42FB415EBB4260" lastPageNumber="49" pageId="0" pageNumber="49">
<subSubSection pageId="0" pageNumber="49" type="nomenclature">
<paragraph pageId="0" pageNumber="49">
<taxonomicName LSID="404FB3FB-0AFB-5A3F-AF42-FB415EBB4260" authority="Mašán, 2020" authorityName="Mašán" authorityYear="2020" class="Arachnida" family="Digamasellidae" genus="Dendroseius" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dendroseius reductus" order="Mesostigmata" pageId="0" pageNumber="49" phylum="Arthropoda" rank="species" species="reductus" status="sp. nov.">Dendroseius reductus</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="49">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figures 1, 2" captionStartId="F1" captionText="Figures 1, 2. Dendroseius reductus sp. nov., female, with setal notation of idiosomal setae 1 dorsal idiosoma 2 ventral idiosoma. Scale bar: 50 µm." figureDoi="10.3897/zookeys.984.57256.figures1-2" httpUri="https://binary.pensoft.net/fig/470945" pageId="0" pageNumber="49">Figs 1-2</figureCitation>
<figureCitation captionStart="Figures 36" captionStartId="F2" captionText="Figures 3 - 6. Dendroseius reductus sp. nov., female 3 peritrematal shield and adjacent exopodal platelets 4 ventral gnathosoma 5 epistomes, normal form and an aberration having two central prongs 6 chelicera, lateral view. Scale bars: 50 µm (3), 25 µm (4), 20 µm (5, 6)." figureDoi="10.3897/zookeys.984.57256.figures3-6" httpUri="https://binary.pensoft.net/fig/470946" pageId="0" pageNumber="49">, 3-6</figureCitation>
<figureCitation captionStart="Figures 710" captionStartId="F3" captionText="Figures 7 - 10. Dendroseius reductus sp. nov., photographs of female 7 dorsal idiosoma 8 epistome 9 ventral idiosoma 10 sperm induction system. Not to scale." figureDoi="10.3897/zookeys.984.57256.figures7-10" httpUri="https://binary.pensoft.net/fig/470947" pageId="0" pageNumber="49">, 7-10</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="49" type="type material">
<paragraph pageId="0" pageNumber="49">Type material examined.</paragraph>
<paragraph pageId="0" pageNumber="49">
<emphasis bold="true" italics="true" pageId="0" pageNumber="49">Holotype</emphasis>
female: SW Slovakia,
<normalizedToken originalValue="Podunajská">Podunajska</normalizedToken>
Rovina Flatland, Bratislava Capital, Rusovce Settlement, hard-wood flood-plain forest (
<taxonomicName genus="Fraxino-Ulmetum" lsidName="Fraxino-Ulmetum carpinetosum" pageId="0" pageNumber="49" rank="species" species="carpinetosum">
<emphasis italics="true" pageId="0" pageNumber="49">Fraxino-Ulmetum carpinetosum</emphasis>
</taxonomicName>
) with poplar (
<taxonomicName class="Magnoliopsida" family="Salicaceae" genus="Populus" higherTaxonomySource="CoL" kingdom="Plantae" lsidName="Populus" order="Malpighiales" pageId="0" pageNumber="49" phylum="Tracheophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="49">Populus</emphasis>
</taxonomicName>
sp.), 135 m a.s.l., March 7, 2020, detritus from a hollow of old and dying poplar tree.
<emphasis bold="true" italics="true" pageId="0" pageNumber="49">Paratype</emphasis>
females: one specimen, with the same data as for holotype; three specimens, the same locality as in holotype, May 19, 2004, under bark of dead poplar tree. The type material is deposited at the Institute of Zoology, Slovak Academy of Sciences, Bratislava, Slovakia.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="49" type="description">
<paragraph pageId="0" pageNumber="49">Description</paragraph>
<paragraph pageId="0" pageNumber="49">
(Female).
<emphasis italics="true" pageId="0" pageNumber="49">Dorsal idiosoma</emphasis>
(Figs
<figureCitation captionStart="Figures 1, 2" captionStartId="F1" captionText="Figures 1, 2. Dendroseius reductus sp. nov., female, with setal notation of idiosomal setae 1 dorsal idiosoma 2 ventral idiosoma. Scale bar: 50 µm." figureDoi="10.3897/zookeys.984.57256.figures1-2" httpUri="https://binary.pensoft.net/fig/470945" pageId="0" pageNumber="49">1</figureCitation>
,
<figureCitation captionStart="Figures 710" captionStartId="F3" captionText="Figures 7 - 10. Dendroseius reductus sp. nov., photographs of female 7 dorsal idiosoma 8 epistome 9 ventral idiosoma 10 sperm induction system. Not to scale." figureDoi="10.3897/zookeys.984.57256.figures7-10" httpUri="https://binary.pensoft.net/fig/470947" pageId="0" pageNumber="49">7</figureCitation>
). Idiosoma oblong, regularly oval, widest at medial portion, 315-345
<normalizedToken originalValue="μm">μm</normalizedToken>
long and 195-220
<normalizedToken originalValue="μm">μm</normalizedToken>
wide (
<emphasis italics="true" pageId="0" pageNumber="49">N</emphasis>
= 5). Dorsal shield completely divided to podonotal and opisthonotal parts, not completely covering dorsal surface, exposing narrow strips of lateral soft integument. Podonotal shield 157-170
<normalizedToken originalValue="μm">μm</normalizedToken>
long and 170-175
<normalizedToken originalValue="μm">μm</normalizedToken>
wide, with smooth medial surface, delicate lateral reticulation, 17-18 pairs of setae (j1-j6, z1-z6, s2-s6, s1 symmetrically or asymmetrically situated on the shield and soft integument, respectively), and two pairs of scleronoduli between setae j5 and j6; outer scleronoduli larger and more conspicuous. Marginal setae r2, r4, r5 and R1 inserted in lateral soft integument, apparently outside the dorsal shields, and humeral setae r3 placed on peritrematal shields. Opisthonotal shield 165-180
<normalizedToken originalValue="μm">μm</normalizedToken>
long and 175-190
<normalizedToken originalValue="μm">μm</normalizedToken>
wide, finely reticulate on whole surface, and bearing 19 pairs of setae (J1-J5, Z1-Z5, S1-S5, R2-R5). All dorsal setae smooth and needle-shaped, mostly similar in their lengths; setae z1 shortest (10-11
<normalizedToken originalValue="μm">μm</normalizedToken>
) and Z5 longest (35-40
<normalizedToken originalValue="μm">μm</normalizedToken>
); the lengths of some selected dorsal setae as follows: j1 16-19
<normalizedToken originalValue="μm">μm</normalizedToken>
, j3 21-23
<normalizedToken originalValue="μm">μm</normalizedToken>
, j5 17-21
<normalizedToken originalValue="μm">μm</normalizedToken>
, r5 24-28
<normalizedToken originalValue="μm">μm</normalizedToken>
, J1-J4 and Z1-Z3 18-23
<normalizedToken originalValue="μm">μm</normalizedToken>
, J5 17-19
<normalizedToken originalValue="μm">μm</normalizedToken>
, Z4 25-29
<normalizedToken originalValue="μm">μm</normalizedToken>
, S1-S4 21-25
<normalizedToken originalValue="μm">μm</normalizedToken>
, S5 27-30
<normalizedToken originalValue="μm">μm</normalizedToken>
, R2-R4 18-20
<normalizedToken originalValue="μm">μm</normalizedToken>
.
</paragraph>
<caption doi="10.3897/zookeys.984.57256.figures1-2" httpUri="https://binary.pensoft.net/fig/470945" pageId="0" pageNumber="49" start="Figures 1, 2" startId="F1">
<paragraph pageId="0" pageNumber="49">
<emphasis bold="true" pageId="0" pageNumber="49">Figures 1, 2.</emphasis>
<taxonomicName authorityName="Mašán" authorityYear="2020" class="Arachnida" family="Digamasellidae" genus="Dendroseius" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dendroseius reductus" order="Mesostigmata" pageId="0" pageNumber="49" phylum="Arthropoda" rank="species" species="reductus">
<emphasis italics="true" pageId="0" pageNumber="49">Dendroseius reductus</emphasis>
</taxonomicName>
sp. nov., female, with setal notation of idiosomal setae
<emphasis bold="true" pageId="0" pageNumber="49">1</emphasis>
dorsal idiosoma
<emphasis bold="true" pageId="0" pageNumber="49">2</emphasis>
ventral idiosoma. Scale bar: 50
<normalizedToken originalValue="µm">µm</normalizedToken>
.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="49">
<emphasis italics="true" pageId="0" pageNumber="49">Ventral idiosoma</emphasis>
(Figs
<figureCitation captionStart="Figures 1, 2" captionStartId="F1" captionText="Figures 1, 2. Dendroseius reductus sp. nov., female, with setal notation of idiosomal setae 1 dorsal idiosoma 2 ventral idiosoma. Scale bar: 50 µm." figureDoi="10.3897/zookeys.984.57256.figures1-2" httpUri="https://binary.pensoft.net/fig/470945" pageId="0" pageNumber="49">2</figureCitation>
,
<figureCitation captionStart="Figures 710" captionStartId="F3" captionText="Figures 7 - 10. Dendroseius reductus sp. nov., photographs of female 7 dorsal idiosoma 8 epistome 9 ventral idiosoma 10 sperm induction system. Not to scale." figureDoi="10.3897/zookeys.984.57256.figures7-10" httpUri="https://binary.pensoft.net/fig/470947" pageId="0" pageNumber="49">9</figureCitation>
). Tritosternum with long columnar base and two long and distinctly pilose laciniae. Presternal area lacking separate scutal elements. Sternal shield oblong, 90-100
<normalizedToken originalValue="μm">μm</normalizedToken>
long, 66-73
<normalizedToken originalValue="μm">μm</normalizedToken>
wide at level of constriction between coxae II, with smooth and weakly sclerotized but well-defined anteriormost portion possessing first pair of sternal setae and reaching level of first pair of lyrifissures (iv1); posterior margin regularly convex and produced to relatively acute angles each bearing a metasternal seta (st4); the shield with fine reticulate pattern on lateral parts, four pairs of sternal setae (st1-st4) and three pairs of lyrifissures, iv1-iv3 (opening of iv1 and iv2 slit-like while iv3 suboval, iv1 with transverse position to the body axis while iv2 oriented longitudinally). Epigynal shield oblong, 50-60
<normalizedToken originalValue="μm">μm</normalizedToken>
wide, hyaline anteriorly (anterior margin obscure and not distinguishable), almost straight or widely rounded posteriorly, bearing one pair of setae (st5) and a pattern of longitudinal lines; genital lyrifissures (iv5) situated on soft integument behind st5, outside the shield. Four slit-like postgenital sclerites close to posterior margin of epigynal shield present. Peritremes shortened, 66-80
<normalizedToken originalValue="μm">μm</normalizedToken>
long, with anterior end reaching slightly beyond posterior margin of coxa II; peritrematal shields well-developed, free from podonotal shield, markedly narrowed behind coxae IV, bearing humeral setae (r3), and adjacent to anterior margin of podonotal shield close to paravertical setae z1 (Fig.
<figureCitation captionStart="Figures 36" captionStartId="F2" captionText="Figures 3 - 6. Dendroseius reductus sp. nov., female 3 peritrematal shield and adjacent exopodal platelets 4 ventral gnathosoma 5 epistomes, normal form and an aberration having two central prongs 6 chelicera, lateral view. Scale bars: 50 µm (3), 25 µm (4), 20 µm (5, 6)." figureDoi="10.3897/zookeys.984.57256.figures3-6" httpUri="https://binary.pensoft.net/fig/470946" pageId="0" pageNumber="49">3</figureCitation>
). Three subtriangular exopodal platelets between peritrematal shields and coxae present. Metapodal soft integument with a pair of small irregular platelets having longitudinal position. Ventrianal shield subquadrate, only slightly wider than long (105-115
<normalizedToken originalValue="μm">μm</normalizedToken>
long and 112-130
<normalizedToken originalValue="μm">μm</normalizedToken>
wide), delicately reticulate on whole surface, bearing five pairs of pre-anal setae (JV1-JV3, ZV2, ZV3) in addition to three circum-anal setae, and a pair of marginal gland pores (gv3) more or less aligned with posterior margin of anal opening; adanal setae (ad) apparently longer than postanal seta (ad 27-30
<normalizedToken originalValue="μm">μm</normalizedToken>
, pa 15-17
<normalizedToken originalValue="μm">μm</normalizedToken>
). Soft opisthogastrict integument bearing two pairs of setae (ZV1, JV5). Ventrally situated setae similarly formed as those on dorsal side of idiosoma. The lengths of some selected setae on ventrum as follows: st1 25-28
<normalizedToken originalValue="μm">μm</normalizedToken>
, st2 24-27
<normalizedToken originalValue="μm">μm</normalizedToken>
, st3 22-26
<normalizedToken originalValue="μm">μm</normalizedToken>
, st4 21-24
<normalizedToken originalValue="μm">μm</normalizedToken>
, st5 21-23
<normalizedToken originalValue="μm">μm</normalizedToken>
, JV1 and JV2 18-23
<normalizedToken originalValue="μm">μm</normalizedToken>
, JV5 22-27
<normalizedToken originalValue="μm">μm</normalizedToken>
.
</paragraph>
<caption doi="10.3897/zookeys.984.57256.figures3-6" httpUri="https://binary.pensoft.net/fig/470946" pageId="0" pageNumber="49" start="Figures 36" startId="F2">
<paragraph pageId="0" pageNumber="49">
<emphasis bold="true" pageId="0" pageNumber="49">Figures 3-6.</emphasis>
<taxonomicName authorityName="Mašán" authorityYear="2020" class="Arachnida" family="Digamasellidae" genus="Dendroseius" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dendroseius reductus" order="Mesostigmata" pageId="0" pageNumber="49" phylum="Arthropoda" rank="species" species="reductus">
<emphasis italics="true" pageId="0" pageNumber="49">Dendroseius reductus</emphasis>
</taxonomicName>
sp. nov., female
<emphasis bold="true" pageId="0" pageNumber="49">3</emphasis>
peritrematal shield and adjacent exopodal platelets
<emphasis bold="true" pageId="0" pageNumber="49">4</emphasis>
ventral gnathosoma
<emphasis bold="true" pageId="0" pageNumber="49">5</emphasis>
epistomes, normal form and an aberration having two central prongs
<emphasis bold="true" pageId="0" pageNumber="49">6</emphasis>
chelicera, lateral view. Scale bars: 50
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="49">3</emphasis>
), 25
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="49">4</emphasis>
), 20
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="49">5, 6</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="49">
<emphasis italics="true" pageId="0" pageNumber="49">Sperm induction system</emphasis>
(Fig.
<figureCitation captionStart="Figures 710" captionStartId="F3" captionText="Figures 7 - 10. Dendroseius reductus sp. nov., photographs of female 7 dorsal idiosoma 8 epistome 9 ventral idiosoma 10 sperm induction system. Not to scale." figureDoi="10.3897/zookeys.984.57256.figures7-10" httpUri="https://binary.pensoft.net/fig/470947" pageId="0" pageNumber="49">10</figureCitation>
). Each gonoporus associated with inner posterior margin of coxa IV, together with relatively short and broad duct formed as a club-shaped structure; the duct opening into small hyaline sacculus. Sperm system of both coxae mutually connected with membranous structure (Fig.
<figureCitation captionStart="Figures 710" captionStartId="F3" captionText="Figures 7 - 10. Dendroseius reductus sp. nov., photographs of female 7 dorsal idiosoma 8 epistome 9 ventral idiosoma 10 sperm induction system. Not to scale." figureDoi="10.3897/zookeys.984.57256.figures7-10" httpUri="https://binary.pensoft.net/fig/470947" pageId="0" pageNumber="49">10</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="49">
<emphasis italics="true" pageId="0" pageNumber="49">Gnathosomal structures</emphasis>
(Figs
<figureCitation captionStart="Figures 36" captionStartId="F2" captionText="Figures 3 - 6. Dendroseius reductus sp. nov., female 3 peritrematal shield and adjacent exopodal platelets 4 ventral gnathosoma 5 epistomes, normal form and an aberration having two central prongs 6 chelicera, lateral view. Scale bars: 50 µm (3), 25 µm (4), 20 µm (5, 6)." figureDoi="10.3897/zookeys.984.57256.figures3-6" httpUri="https://binary.pensoft.net/fig/470946" pageId="0" pageNumber="49">4-6</figureCitation>
,
<figureCitation captionStart="Figures 710" captionStartId="F3" captionText="Figures 7 - 10. Dendroseius reductus sp. nov., photographs of female 7 dorsal idiosoma 8 epistome 9 ventral idiosoma 10 sperm induction system. Not to scale." figureDoi="10.3897/zookeys.984.57256.figures7-10" httpUri="https://binary.pensoft.net/fig/470947" pageId="0" pageNumber="49">8</figureCitation>
). Deutosternal groove with seven transverse sculptural furrows, six posterior ones with tiny denticles; corniculi horn-like, divergent; internal malae with median projections contiguous and with serrate margins (Fig.
<figureCitation captionStart="Figures 36" captionStartId="F2" captionText="Figures 3 - 6. Dendroseius reductus sp. nov., female 3 peritrematal shield and adjacent exopodal platelets 4 ventral gnathosoma 5 epistomes, normal form and an aberration having two central prongs 6 chelicera, lateral view. Scale bars: 50 µm (3), 25 µm (4), 20 µm (5, 6)." figureDoi="10.3897/zookeys.984.57256.figures3-6" httpUri="https://binary.pensoft.net/fig/470946" pageId="0" pageNumber="49">4</figureCitation>
). The lengths of hypostomal setae as follows: h1 17-22
<normalizedToken originalValue="μm">μm</normalizedToken>
, h2 11-14
<normalizedToken originalValue="μm">μm</normalizedToken>
, h3 19-22
<normalizedToken originalValue="μm">μm</normalizedToken>
, pc 21-25
<normalizedToken originalValue="μm">μm</normalizedToken>
; the setae smooth and needle-like. Palp apotele 2-tined. Epistome triramous, with short central and longer lateral branches, each terminally with one to three points; one specimen abnormally with two central branches (Figs
<figureCitation captionStart="Figures 36" captionStartId="F2" captionText="Figures 3 - 6. Dendroseius reductus sp. nov., female 3 peritrematal shield and adjacent exopodal platelets 4 ventral gnathosoma 5 epistomes, normal form and an aberration having two central prongs 6 chelicera, lateral view. Scale bars: 50 µm (3), 25 µm (4), 20 µm (5, 6)." figureDoi="10.3897/zookeys.984.57256.figures3-6" httpUri="https://binary.pensoft.net/fig/470946" pageId="0" pageNumber="49">5</figureCitation>
,
<figureCitation captionStart="Figures 710" captionStartId="F3" captionText="Figures 7 - 10. Dendroseius reductus sp. nov., photographs of female 7 dorsal idiosoma 8 epistome 9 ventral idiosoma 10 sperm induction system. Not to scale." figureDoi="10.3897/zookeys.984.57256.figures7-10" httpUri="https://binary.pensoft.net/fig/470947" pageId="0" pageNumber="49">8</figureCitation>
). Cheliceral digits of similar size, dentate; movable digit with three closely set teeth in addition to distal hook; fixed digit with about seven teeth in addition to apical hook and minute setiform
<emphasis italics="true" pageId="0" pageNumber="49">pilus dentilis</emphasis>
(Fig.
<figureCitation captionStart="Figures 36" captionStartId="F2" captionText="Figures 3 - 6. Dendroseius reductus sp. nov., female 3 peritrematal shield and adjacent exopodal platelets 4 ventral gnathosoma 5 epistomes, normal form and an aberration having two central prongs 6 chelicera, lateral view. Scale bars: 50 µm (3), 25 µm (4), 20 µm (5, 6)." figureDoi="10.3897/zookeys.984.57256.figures3-6" httpUri="https://binary.pensoft.net/fig/470946" pageId="0" pageNumber="49">6</figureCitation>
); a coronet-like fringe, dorsal cheliceral seta and antiaxial lyrifissure not discerned.
</paragraph>
<caption doi="10.3897/zookeys.984.57256.figures7-10" httpUri="https://binary.pensoft.net/fig/470947" pageId="0" pageNumber="49" start="Figures 710" startId="F3">
<paragraph pageId="0" pageNumber="49">
<emphasis bold="true" pageId="0" pageNumber="49">Figures 7-10.</emphasis>
<taxonomicName authorityName="Mašán" authorityYear="2020" class="Arachnida" family="Digamasellidae" genus="Dendroseius" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dendroseius reductus" order="Mesostigmata" pageId="0" pageNumber="49" phylum="Arthropoda" rank="species" species="reductus">
<emphasis italics="true" pageId="0" pageNumber="49">Dendroseius reductus</emphasis>
</taxonomicName>
sp. nov., photographs of female
<emphasis bold="true" pageId="0" pageNumber="49">7</emphasis>
dorsal idiosoma
<emphasis bold="true" pageId="0" pageNumber="49">8</emphasis>
epistome
<emphasis bold="true" pageId="0" pageNumber="49">9</emphasis>
ventral idiosoma
<emphasis bold="true" pageId="0" pageNumber="49">10</emphasis>
sperm induction system. Not to scale.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="49">
<emphasis italics="true" pageId="0" pageNumber="49">Legs</emphasis>
. All legs with well-developed pretarsus and ambulacral apparatus (including pulvillus and two claws), shorter than idiosoma: legs I 290-310
<normalizedToken originalValue="μm">μm</normalizedToken>
, legs II 210-230
<normalizedToken originalValue="μm">μm</normalizedToken>
, legs III 180-200
<normalizedToken originalValue="μm">μm</normalizedToken>
, and legs IV 260-285
<normalizedToken originalValue="μm">μm</normalizedToken>
long. Leg segments not spurred ventrally, with normal chaetotactic pattern for the genus: leg I - coxa 0-0/1, 0/1-0 (2), trochanter 1-1/1, 0/2-1 (6), femur 2-3/2, 2/2-2 (13), genu 2-3/2, 2/1-2 (12), tibia 2-3/2, 2/1-2 (12); leg II - coxa 0-0/1, 0/1-0 (2), trochanter 1-0/1, 0/2-1 (5), femur 2-3/1, 2/2-1 (11), genu 2-3/1, 2/1-2 (11), tibia 2-2/1, 2/1-2 (10); leg III - coxa 0-0/1, 0/1-0 (2), trochanter 1-1/1, 0/2-0 (5), femur 1-2/1, 1/0-1 (6), genu 2-2/1, 2/1-1 (9), tibia 2-1/1, 2/1-1 (8); leg IV - coxa 0-0/1, 0/0-0 (1), trochanter 1-1/1, 0/2-0 (5), femur 1-2/1, 1/0-1 (6), genu 1-2/1, 2/0-1 (7), tibia 1-1/1, 2/1-1 (7); tarsi II-IV - 18 setae each. Leg setae uniform and similar in length, smooth and needle-like.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="49" type="etymology">
<paragraph pageId="0" pageNumber="49">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="49">
The specific name is derived from the Latin word
<taxonomicName authorityName="Mašán" authorityYear="2020" class="Arachnida" family="Digamasellidae" genus="Dendroseius" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="reductus" order="Mesostigmata" pageId="0" pageNumber="49" phylum="Arthropoda" rank="species" species="reductus">
<emphasis italics="true" pageId="0" pageNumber="49">reductus</emphasis>
</taxonomicName>
(reduced) and expresses an important feature of the species - an unusual shape of epistome, a fine flat structure situated on upper surface of gnathosoma, with partly reduced central projection on its anterior margin.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="49" type="taxonomic notes">
<paragraph pageId="0" pageNumber="49">Taxonomic notes.</paragraph>
<paragraph pageId="0" pageNumber="49">
The triramous epistome of the new species, with remarkably shortened central projection, is unique and quite unlike any other known species in the genus
<taxonomicName authorityName="Karg" authorityYear="1965" class="Arachnida" family="Digamasellidae" genus="Dendroseius" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dendroseius" order="Mesostigmata" pageId="0" pageNumber="49" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="49">Dendroseius</emphasis>
</taxonomicName>
. In other congeners, this central projection is much longer and more acuminate in the terminal part, reaching to (in
<taxonomicName lsidName="D. amoliensis" pageId="0" pageNumber="49" rank="species" species="amoliensis">
<emphasis italics="true" pageId="0" pageNumber="49">D. amoliensis</emphasis>
</taxonomicName>
) or slightly beyond the level of the adjacent lateral apices (in all other congeners, including two species exclusively based on deutonymphs and not included in the key below). Nevertheless, the new species is most similar to
<taxonomicName lsidName="D. vulgaris" pageId="0" pageNumber="49" rank="species" species="vulgaris">
<emphasis italics="true" pageId="0" pageNumber="49">D. vulgaris</emphasis>
</taxonomicName>
distributed in China (
<bibRefCitation DOI="https://doi.org/10.11646/zootaxa.3768.1.3" author="Ma, LM" journalOrPublisher="Zootaxa" pageId="0" pageNumber="49" pagination="43 - 58" refId="B10" refString="Ma, LM, Ho, CC, Wang, SC, 2014. Two new species of Digamasellidae from Taiwan (Acari: Mesostigmata). Zootaxa 3768: 43 - 58, DOI: https://doi.org/10.11646/zootaxa.3768.1.3" title="Two new species of Digamasellidae from Taiwan (Acari: Mesostigmata)." url="https://doi.org/10.11646/zootaxa.3768.1.3" volume="3768" year="2014">Ma, Ho and Wang 2014</bibRefCitation>
), and it can be distinguished from
<taxonomicName lsidName="D. vulgaris" pageId="0" pageNumber="49" rank="species" species="vulgaris">
<emphasis italics="true" pageId="0" pageNumber="49">D. vulgaris</emphasis>
</taxonomicName>
and other species by the character states presented in the identification key below. Some metric data for
<taxonomicName lsidName="D. reticulatus" pageId="0" pageNumber="49" rank="species" species="reticulatus">
<emphasis italics="true" pageId="0" pageNumber="49">D. reticulatus</emphasis>
</taxonomicName>
provided in the key are derived from specimens in
<normalizedToken originalValue="authors">author's</normalizedToken>
personal collection from Wales, UK (Anglesey, Newborough Beach, found in decomposing plant substrate in a sandy coastal area). The morphological data used for other
<taxonomicName authorityName="Karg" authorityYear="1965" class="Arachnida" family="Digamasellidae" genus="Dendroseius" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Dendroseius" order="Mesostigmata" pageId="0" pageNumber="49" phylum="Arthropoda" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="49">Dendroseius</emphasis>
</taxonomicName>
species were based only on the original descriptions.
</paragraph>
</subSubSection>
</treatment>
</document>