143 lines
18 KiB
XML
143 lines
18 KiB
XML
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<mods:title id="D018246E2E379ED18B6FAE3D3F01EEA7">New specimens from Mid-Cretaceous Myanmar amber illuminate the phylogenetic placement of Lagonomegopidae (Arachnida: Araneae)</mods:title>
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<mods:namePart id="923A294B478CA1CD1F8746C348BC4A1E">Guo, Xiangbo</mods:namePart>
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<mods:namePart id="809E0300B527C93AB637F15B8C2CC52A">Selden, Paul A.</mods:namePart>
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<mods:namePart id="9C88304157CC5A099463DCAC0A5CB0A7">Ren, Dong</mods:namePart>
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<mods:date id="F9ABD9D8B7F202C7459D150FB4A2B5E0">2022</mods:date>
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<mods:number id="DFAABC65631A86CE357F2C5ABFB0A8E5">2021-06-16</mods:number>
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<treatment id="03A687EAFFD7FF98FF30F950FE4DFA93" ID-DOI="http://doi.org/10.5281/zenodo.6599807" ID-GBIF-Taxon="195705144" ID-Zenodo-Dep="6599807" LSID="urn:lsid:plazi:treatment:03A687EAFFD7FF98FF30F950FE4DFA93" httpUri="http://treatment.plazi.org/id/03A687EAFFD7FF98FF30F950FE4DFA93" lastPageId="12" lastPageNumber="411" pageId="11" pageNumber="410">
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<subSubSection id="C3156577FFD7FF9FFF30F950FD04F962" box="[212,729,1677,1702]" pageId="11" pageNumber="410" type="nomenclature">
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<paragraph id="8BB036FCFFD7FF9FFF30F950FD04F962" blockId="11.[212,729,1677,1702]" box="[212,729,1677,1702]" pageId="11" pageNumber="410">
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<heading id="D0F88190FFD7FF9FFF30F950FD04F962" box="[212,729,1677,1702]" centered="true" fontSize="9" level="2" pageId="11" pageNumber="410" reason="2">
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<taxonomicName id="4C0F4D7FFFD7FF9FFF30F950FD04F962" authority="GUO & SELDEN, 2020" authorityName="Guo & Selden" authorityYear="2020" box="[212,729,1677,1702]" class="Arachnida" family="Lagonomegopidae" genus="Odontomegops" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="11" pageNumber="410" phylum="Arthropoda" rank="species" species="titan">
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<emphasis id="B97BEAEEFFD7FF9FFF30F950FE01F961" box="[212,476,1678,1701]" italics="true" pageId="11" pageNumber="410">ODONTOMEGOPS TITAN</emphasis>
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<bibRefCitation id="EF9E4B0DFFD7FF9FFE07F953FD04F962" author="Guo XB & Selden PA & Shih CK & Ren D" box="[483,729,1677,1702]" pageId="11" pageNumber="410" pagination="104257" refId="ref11275" refString="Guo XB, Selden PA, Shih CK, Ren D. 2020. Two new lagonomegopid spiders (Arachnida: Araneae) from the Mid- Cretaceous of northern Myanmar, with comments on the superfamilial placement of Lagonomegopidae. Cretaceous Research 106: 104257." type="journal article" year="2020">GUO & SELDEN, 2020</bibRefCitation>
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</taxonomicName>
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</heading>
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</paragraph>
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</subSubSection>
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<subSubSection id="C3156577FFD7FF98FE48F96AFE4DFA93" lastPageId="12" lastPageNumber="411" pageId="11" pageNumber="410" type="description">
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<paragraph id="8BB036FCFFD7FF9FFE48F96AFDDCF909" blockId="11.[428,513,1716,1741]" box="[428,513,1716,1741]" pageId="11" pageNumber="410">
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(
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<figureCitation id="13342A79FFD7FF9FFE51F96AFE24F909" box="[437,505,1716,1741]" captionStart="Figure 6" captionStartId="12.[145,225,827,849]" captionTargetBox="[147,1428,197,786]" captionTargetId="figure-491@12.[145,1428,195,787]" captionTargetPageId="12" captionText="Figure 6. Odontomegops titan; holotype CNU-ARA-MA2019001: A, basal part of abdomen, ventral view, showing male genitalia and tracheal spiracle; B, schematic drawing of basal ventral abdomen; C, male genitalia, ventral view, showing epigastric furrow and epiandrous spigots (arrows). Scale bars represent 0.5 mm (A, B) and 0.1 mm (C)." figureDoi="http://doi.org/10.5281/zenodo.6599795" httpUri="https://zenodo.org/record/6599795/files/figure.png" pageId="11" pageNumber="410">FIG. 6</figureCitation>
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)
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</paragraph>
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<paragraph id="8BB036FCFFD7FF9FFF47F903FE22F936" blockId="11.[163,779,1756,1840]" box="[163,511,1756,1779]" pageId="11" pageNumber="410">
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<bibRefCitation id="EF9E4B0DFFD7FF9FFF47F903FE83F937" author="Guo XB & Selden PA & Shih CK & Ren D" box="[163,350,1756,1779]" pageId="11" pageNumber="410" pagination="104257" refId="ref11275" refString="Guo XB, Selden PA, Shih CK, Ren D. 2020. Two new lagonomegopid spiders (Arachnida: Araneae) from the Mid- Cretaceous of northern Myanmar, with comments on the superfamilial placement of Lagonomegopidae. Cretaceous Research 106: 104257." type="journal article" year="2020">
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Guo
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<emphasis id="B97BEAEEFFD7FF9FFF3CF903FECDF935" box="[216,272,1756,1778]" italics="true" pageId="11" pageNumber="410">et al.</emphasis>
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(2020)
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</bibRefCitation>
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: 2–4, figs 1, 2.
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</paragraph>
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<paragraph id="8BB036FCFFD7FF9FFF47F925FEC6F8F4" blockId="11.[163,779,1756,1840]" pageId="11" pageNumber="410">
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<emphasis id="B97BEAEEFFD7FF9FFF47F925FED3F8D4" box="[163,270,1787,1808]" italics="true" pageId="11" pageNumber="410">Material:</emphasis>
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Male, specimen no. CNU-ARA-MA2019001 (
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<typeStatus id="54B4885EFFD7FF9FFF4EF8C4FECDF8F4" box="[170,272,1818,1840]" pageId="11" pageNumber="410" type="holotype">holotype</typeStatus>
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).
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</paragraph>
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<paragraph id="8BB036FCFFD7FF9FFCDFF9CFFC2BF9A1" blockId="11.[827,1442,1553,1637]" pageId="11" pageNumber="410">
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<emphasis id="B97BEAEEFFD7FF9FFCDFF9CFFB88F9E2" box="[827,1109,1553,1574]" italics="true" pageId="11" pageNumber="410">Locality and horizon:</emphasis>
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Hukawng Valley,
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<collectingRegion id="49CBF81EFFD7FF9FFAACF9CFFCA1F981" country="Myanmar" name="Kachin" pageId="11" pageNumber="410">Kachin State</collectingRegion>
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, northern
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<collectingCountry id="F318766CFFD7FF9FFC19F9EEFBAEF981" box="[1021,1139,1584,1605]" name="Myanmar" pageId="11" pageNumber="410">Myanmar</collectingCountry>
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; lowermost Cenomanian, Mid-Cretaceous.
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</paragraph>
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<paragraph id="8BB036FCFFD7FF9FFCDFF95FFB4CF8EB" blockId="11.[827,1442,1664,1839]" pageId="11" pageNumber="410">
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<emphasis id="B97BEAEEFFD7FF9FFCDFF95FFC16F952" box="[827,971,1665,1686]" italics="true" pageId="11" pageNumber="410">Description:</emphasis>
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See
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<bibRefCitation id="EF9E4B0DFFD7FF9FFBE3F95EFB0CF952" author="Guo XB & Selden PA & Shih CK & Ren D" box="[1031,1233,1664,1686]" pageId="11" pageNumber="410" pagination="104257" refId="ref11275" refString="Guo XB, Selden PA, Shih CK, Ren D. 2020. Two new lagonomegopid spiders (Arachnida: Araneae) from the Mid- Cretaceous of northern Myanmar, with comments on the superfamilial placement of Lagonomegopidae. Cretaceous Research 106: 104257." type="journal article" year="2020">
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Guo
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<emphasis id="B97BEAEEFFD7FF9FFBA5F95FFBA0F951" box="[1089,1149,1664,1686]" italics="true" pageId="11" pageNumber="410">et al.</emphasis>
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(2020)
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</bibRefCitation>
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. Epigastric plate with more than 30 epiandrous spigots scattered along median margin of epigastric furrow (
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<figureCitation id="13342A79FFD7FF9FFB3EF963FAF7F917" box="[1242,1322,1725,1747]" captionStart="Figure 6" captionStartId="12.[145,225,827,849]" captionTargetBox="[147,1428,197,786]" captionTargetId="figure-491@12.[145,1428,195,787]" captionTargetPageId="12" captionText="Figure 6. Odontomegops titan; holotype CNU-ARA-MA2019001: A, basal part of abdomen, ventral view, showing male genitalia and tracheal spiracle; B, schematic drawing of basal ventral abdomen; C, male genitalia, ventral view, showing epigastric furrow and epiandrous spigots (arrows). Scale bars represent 0.5 mm (A, B) and 0.1 mm (C)." figureDoi="http://doi.org/10.5281/zenodo.6599795" httpUri="https://zenodo.org/record/6599795/files/figure.png" pageId="11" pageNumber="410">Fig. 6C</figureCitation>
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). Tracheal spiracle broad, situated on postgastric area behind epigastric furrow, immediately dividing internally into two tracheae (
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<figureCitation id="13342A79FFD7FF9FFBF5F8C7FB5FF8EB" box="[1041,1154,1817,1839]" captionStart="Figure 6" captionStartId="12.[145,225,827,849]" captionTargetBox="[147,1428,197,786]" captionTargetId="figure-491@12.[145,1428,195,787]" captionTargetPageId="12" captionText="Figure 6. Odontomegops titan; holotype CNU-ARA-MA2019001: A, basal part of abdomen, ventral view, showing male genitalia and tracheal spiracle; B, schematic drawing of basal ventral abdomen; C, male genitalia, ventral view, showing epigastric furrow and epiandrous spigots (arrows). Scale bars represent 0.5 mm (A, B) and 0.1 mm (C)." figureDoi="http://doi.org/10.5281/zenodo.6599795" httpUri="https://zenodo.org/record/6599795/files/figure.png" pageId="11" pageNumber="410">Fig. 6A, B</figureCitation>
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).
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</paragraph>
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<caption id="DF706674FFD0FF98FF75FCE5FB1CFC48" ID-DOI="http://doi.org/10.5281/zenodo.6599795" ID-Zenodo-Dep="6599795" httpUri="https://zenodo.org/record/6599795/files/figure.png" pageId="12" pageNumber="411" startId="12.[145,225,827,849]" targetBox="[147,1428,197,786]" targetPageId="12">
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<paragraph id="8BB036FCFFD0FF98FF75FCE5FB1CFC48" blockId="12.[145,1425,827,908]" pageId="12" pageNumber="411">
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<emphasis id="B97BEAEEFFD0FF98FF75FCE5FF21FC94" bold="true" box="[145,252,827,849]" pageId="12" pageNumber="411">Figure 6.</emphasis>
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<taxonomicName id="4C0F4D7FFFD0FF98FEE3FCE5FE02FC95" authorityName="Guo & Selden" authorityYear="2020" box="[263,479,827,849]" class="Arachnida" family="Lagonomegopidae" genus="Odontomegops" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="12" pageNumber="411" phylum="Arthropoda" rank="species" species="titan">
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<emphasis id="B97BEAEEFFD0FF98FEE3FCE5FE02FC95" box="[263,479,827,849]" italics="true" pageId="12" pageNumber="411">Odontomegops titan</emphasis>
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</taxonomicName>
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; holotype CNU-ARA-MA2019001: A, basal part of abdomen, ventral view, showing male genitalia and tracheal spiracle; B, schematic drawing of basal ventral abdomen; C, male genitalia, ventral view, showing epigastric furrow and epiandrous spigots (arrows). Scale bars represent 0.5 mm (A, B) and 0.1 mm (C).
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</paragraph>
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</caption>
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<paragraph id="8BB036FCFFD0FF98FF75FC6CFE4DFA93" blockId="12.[145,762,946,1367]" pageId="12" pageNumber="411">
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<emphasis id="B97BEAEEFFD0FF98FF75FC6CFED4FC03" box="[145,265,946,967]" italics="true" pageId="12" pageNumber="411">Remarks:</emphasis>
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After regrinding and repolishing the
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<typeStatus id="54B4885EFFD0FF98FF75FC0FFF2AFC23" box="[145,247,977,999]" pageId="12" pageNumber="411" type="holotype">holotype</typeStatus>
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of
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<taxonomicName id="4C0F4D7FFFD0FF98FEF9FC0FFDD3FC22" authorityName="Guo & Selden" authorityYear="2020" box="[285,526,977,998]" class="Arachnida" family="Lagonomegopidae" genus="Odontomegops" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="12" pageNumber="411" phylum="Arthropoda" rank="species" species="titan">
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<emphasis id="B97BEAEEFFD0FF98FEF9FC0FFDD3FC22" box="[285,526,977,998]" italics="true" pageId="12" pageNumber="411">Odontomegops titan</emphasis>
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</taxonomicName>
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, the male genitalia and tracheal spiracle are now shown clearly. They differ from the single, broad opening in
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<taxonomicName id="4C0F4D7FFFD0FF98FD85FBD1FF29FB86" authorityName="Guo & Selden & Ren" authorityYear="2022" class="Arachnida" family="Lagonomegopidae" genus="Hiatomegops" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="12" pageNumber="411" phylum="Arthropoda" rank="species" species="spinalis">
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<emphasis id="B97BEAEEFFD0FF98FD85FBD1FF29FB86" italics="true" pageId="12" pageNumber="411">Hiatomegops spinalis</emphasis>
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</taxonomicName>
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(
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<figureCitation id="13342A79FFD0FF98FEECFBF3FE54FB86" box="[264,393,1069,1091]" captionStart="Figure 3" captionStartId="8.[145,226,1678,1700]" captionTargetBox="[150,1421,197,1637]" captionTargetId="figure-25@8.[148,1421,195,1638]" captionTargetPageId="8" captionText="Figure 3. Hiatomegops spinalis, holotype CNU-ARA-MA2020002: A, habitus, dorsal view, showing fovea (arrow) and feathery setae (magnified at the top right) on carapace; B, schematic drawing of dorsal habitus; C, habitus, ventral view; D, schematic drawing of ventral habitus; E, cephalothorax, anterior view, showing peg teeth (magnified at the bottom left); F, tibia and tarsus of right pedipalp, lateral view, showing trichobothria (asterisks) and long macrosetae (arrow); G, basal part of abdomen, ventral view, showing female genitalia and tracheal spiracle; H, schematic drawing of basal ventral abdomen; I, spinnerets, ventral view; J, schematic drawing of spinnerets, showing spigots (lower arrow). Scale bars represent 0.5 mm (A, B, C, D), 0.2 mm (E) and 0.1 mm (F, G, H, I, J)." figureDoi="http://doi.org/10.5281/zenodo.6599785" httpUri="https://zenodo.org/record/6599785/files/figure.png" pageId="12" pageNumber="411">Fig. 3G, H</figureCitation>
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), in that two small openings are situated on the postgastric area behind the epigastric furrow in
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<taxonomicName id="4C0F4D7FFFD0FF98FE9BFBB4FDB7FB44" authorityName="Guo & Selden" authorityYear="2020" box="[383,618,1130,1152]" class="Arachnida" family="Lagonomegopidae" genus="Odontomegops" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="12" pageNumber="411" phylum="Arthropoda" rank="species" species="titan">
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<emphasis id="B97BEAEEFFD0FF98FE9BFBB4FDB7FB44" box="[383,618,1130,1152]" italics="true" pageId="12" pageNumber="411">Odontomegops titan</emphasis>
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</taxonomicName>
|
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(
|
||
<figureCitation id="13342A79FFD0FF98FD9CFBB4FD37FB44" box="[632,746,1130,1152]" captionStart="Figure 6" captionStartId="12.[145,225,827,849]" captionTargetBox="[147,1428,197,786]" captionTargetId="figure-491@12.[145,1428,195,787]" captionTargetPageId="12" captionText="Figure 6. Odontomegops titan; holotype CNU-ARA-MA2019001: A, basal part of abdomen, ventral view, showing male genitalia and tracheal spiracle; B, schematic drawing of basal ventral abdomen; C, male genitalia, ventral view, showing epigastric furrow and epiandrous spigots (arrows). Scale bars represent 0.5 mm (A, B) and 0.1 mm (C)." figureDoi="http://doi.org/10.5281/zenodo.6599795" httpUri="https://zenodo.org/record/6599795/files/figure.png" pageId="12" pageNumber="411">Fig. 6A, B</figureCitation>
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). We interpret the abdomen of CNU-ARA-MA2019001 as being somewhat modified and broken, thus exposing the internal part of the tracheal spiracle. Hence, we interpret the posterior respiratory system of
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<taxonomicName id="4C0F4D7FFFD0FF98FF54FADDFE7BFADD" authorityName="Guo & Selden" authorityYear="2020" box="[176,422,1283,1305]" class="Arachnida" family="Lagonomegopidae" genus="Odontomegops" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="12" pageNumber="411" phylum="Arthropoda" rank="species" species="titan">
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<emphasis id="B97BEAEEFFD0FF98FF54FADDFE7BFADD" box="[176,422,1283,1305]" italics="true" pageId="12" pageNumber="411">Odontomegops titan</emphasis>
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</taxonomicName>
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as a single, broad tracheal spiracle, which immediately divides internally into two smaller tracheae.
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</paragraph>
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</subSubSection>
|
||
</treatment>
|
||
</document> |