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<document id="C0D80CDD70334246C6A6373B1CDD6E6A" ID-DOI="10.11646/zootaxa.4088.2.7" ID-GBIF-Dataset="b71f0fec-23b6-4b51-8297-1b8fe1181aea" ID-ISSN="1175-5326" ID-Zenodo-Dep="257531" ID-ZooBank="57C525AE-5297-4D7E-8BB3-61911CF94C94" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1457525836423" checkinUser="donat" docAuthor="Potapov, Mikhail &amp; Bogomolov, Maxim" docDate="2016" docId="8C7F87DFFF85C467FF33F8BB8AC0BAA9" docLanguage="en" docName="15571-5089-1-PB.pdf.imf" docOrigin="Zootaxa 4088 (2)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Proisotoma dualis Potapov &amp; Bogomolov, 2016, sp. nov." docType="treatment" docVersion="11" lastPageNumber="260" masterDocId="7046FFA7FF85C464FFA4FF8D8829BC31" masterDocTitle="Taxonomy of the Proisotoma complex. VI. Mobile forms of Proisotoma s. str. with the description of a new species from East Siberia (Collembola: Isotomidae)" masterLastPageNumber="267" masterPageNumber="257" pageNumber="257" updateTime="1698177468235" updateUser="plazi">
<mods:mods id="8E00EA5535B5B3EB406FDC4F7C33187E" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:title id="D6A3B1B032938290D1E6CF99C0714C8D">Taxonomy of the Proisotoma complex. VI. Mobile forms of Proisotoma s. str. with the description of a new species from East Siberia (Collembola: Isotomidae)</mods:title>
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<mods:namePart id="E48DFCF5D47D7484F4DDDD2AA3FB499A">Potapov, Mikhail</mods:namePart>
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<mods:namePart id="2360C80B66E6FD8BC6CB229432E0282F">Bogomolov, Maxim</mods:namePart>
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<mods:title id="E46B2E4C53DAEDFAA8318323B977209F">Zootaxa</mods:title>
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<mods:date id="58EEC2FA54BCB031E37497A5CDAC4FAF">2016</mods:date>
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<mods:number id="7477E0C559C9ED0FE608B4BD8A70457D">4088</mods:number>
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<treatment id="8C7F87DFFF85C467FF33F8BB8AC0BAA9" ID-DOI="http://doi.org/10.5281/zenodo.5619959" ID-GBIF-Taxon="117196297" ID-Zenodo-Dep="5619959" LSID="urn:lsid:plazi:treatment:8C7F87DFFF85C467FF33F8BB8AC0BAA9" httpUri="http://treatment.plazi.org/id/8C7F87DFFF85C467FF33F8BB8AC0BAA9" lastPageId="3" lastPageNumber="260" pageId="0" pageNumber="257">
<subSubSection id="4CCC6542FF85C465FF33F8BB8B81BCE5" lastPageId="1" lastPageNumber="258" pageId="0" pageNumber="257" type="nomenclature">
<paragraph id="046936C9FF85C464FF33F8BB89FEBB61" blockId="0.[151,471,1846,1906]" box="[151,471,1846,1872]" pageId="0" pageNumber="257">
<heading id="5F2181A5FF85C464FF33F8BB89FEBB61" bold="true" box="[151,471,1846,1872]" fontSize="11" level="1" pageId="0" pageNumber="257" reason="1">
<emphasis id="36A2EADBFF85C464FF33F8BB89FEBB61" bold="true" box="[151,471,1846,1872]" pageId="0" pageNumber="257">
<taxonomicName id="C3D64D4AFF85C464FF33F8BB895BBB61" box="[151,370,1846,1872]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="0" pageNumber="257" phylum="Arthropoda" rank="species" species="dualis" status="sp. nov.">
<emphasis id="36A2EADBFF85C464FF33F8BB895BBB61" bold="true" box="[151,370,1846,1872]" italics="true" pageId="0" pageNumber="257">Proisotoma dualis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="2D9157A0FF85C464FEDDF8BB89FEBB61" box="[377,471,1846,1872]" pageId="0" pageNumber="257" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="046936C9FF85C464FF33F8D489E3BB40" blockId="0.[151,471,1846,1906]" box="[151,458,1881,1906]" pageId="0" pageNumber="257">
<figureCitation id="9CED2A4CFF85C464FF33F8D488D0BB40" box="[151,249,1881,1906]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="0" pageNumber="257">Figs 1–9</figureCitation>
,
<figureCitation id="9CED2A4CFF85C464FEA2F8D48964BB40" box="[262,333,1881,1905]" captionStart="FIGURES 10 – 13" captionStartId="2.[151,264,1702,1723]" captionTargetBox="[156,1431,198,1665]" captionTargetId="figure@2.[151,1435,193,1680]" captionTargetPageId="2" captionText="FIGURES 10 – 13. Proisotoma minima (10, 11) and P. dualis sp. nov. (12, 13): 10, 12, normal forms; 11, 13, mobile forms." httpUri="https://zenodo.org/record/257533/files/figure.png" pageId="0" pageNumber="257">12, 13</figureCitation>
,
<figureCitation id="9CED2A4CFF85C464FEFEF8D48951BB40" box="[346,376,1881,1905]" captionStart="FIGURES 15 – 16" captionStartId="6.[151,264,1902,1923]" captionTargetBox="[159,1400,452,1866]" captionTargetPageId="6" captionText="FIGURES 15 – 16. Furcal complex of mobile forms of Proisotoma dualis sp. nov. (15) and P. minima (16)." httpUri="https://zenodo.org/record/257535/files/figure.png" pageId="0" pageNumber="257">15</figureCitation>
,
<figureCitation id="9CED2A4CFF85C464FE20F8D489E3BB40" box="[388,458,1881,1905]" captionStart="FIGURES 23 – 29" captionStartId="8.[151,264,1898,1919]" captionTargetBox="[162,1424,978,1863]" captionTargetId="figure@8.[151,1435,967,1875]" captionTargetPageId="8" captionText="FIGURES 23 – 29. Morphology of Proisotoma spp: normal (23, 25) and mobile forms (24, 26) of P. dottrensi (Moscow); 23 – 24, furca; 25 – 26, ocelli and PAO; 27, 28, P. dualis sp. nov., posterior row of chaetae in mobile (27) and normal (28) forms; 29, P. brevidens, dens in mobile form." httpUri="https://zenodo.org/record/257537/files/figure.png" pageId="0" pageNumber="257">27, 28</figureCitation>
</paragraph>
<paragraph id="046936C9FF85C465FF33F82C8B81BCE5" blockId="0.[151,1436,1953,2014]" lastBlockId="1.[151,1436,151,285]" lastPageId="1" lastPageNumber="258" pageId="0" pageNumber="257">
<emphasis id="36A2EADBFF85C464FF33F82C88D6BB8B" bold="true" box="[151,255,1953,1978]" pageId="0" pageNumber="257">Material</emphasis>
. Holotype: unmodified adult female, Russia, East Siberia, Buryat Republic, Dzerginsky Nature Reserve, vicinities of Station 81 km (upper flow of Barguzin River), 1076 m alt., 55.349°N, 111.499°E, under bark of dead larch-tree, 10.ix.2012, leg. M. P. and A. Gulgenova. Paratypes. Nine specimens: sub-adult normal and mobile individuals from the same place. Type specimens deposited in MSPU.
</paragraph>
</subSubSection>
<subSubSection id="4CCC6542FF84C465FF63FF528CC5BD2C" pageId="1" pageNumber="258" type="materials_examined">
<paragraph id="046936C9FF84C465FF63FF528CC5BD2C" blockId="1.[151,1436,151,285]" pageId="1" pageNumber="258">
<emphasis id="36A2EADBFF84C465FF63FF5289ACBCC9" bold="true" box="[199,389,223,248]" pageId="1" pageNumber="258">Other material:</emphasis>
Buryat Republic, nearby Goudjekit, valley of Akulikan Stream, ~ 900 m alt.,
<taxonomicName id="C3D64D4AFF84C465FB5AFF6D8DB2BCC6" box="[1278,1435,223,247]" class="Pinopsida" family="Pinaceae" genus="Pinus" kingdom="Plantae" order="Pinales" pageId="1" pageNumber="258" phylum="Tracheophyta" rank="species" species="sibirica">
<emphasis id="36A2EADBFF84C465FB5AFF6D8DB2BCC6" box="[1278,1435,223,247]" italics="true" pageId="1" pageNumber="258">Pinus sibirica</emphasis>
</taxonomicName>
forest, rotten debris under loose bark of fallen branches, 15.viii.2013, leg. M. P. and A. Gulgenova.
</paragraph>
</subSubSection>
<caption id="50A96641FF84C465FF33F82D8D26BBC2" httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="1" pageNumber="258" targetBox="[154,1427,328,1926]" targetPageId="1">
<paragraph id="046936C9FF84C465FF33F82D8D26BBC2" blockId="1.[151,1436,1952,2035]" pageId="1" pageNumber="258">
<emphasis id="36A2EADBFF84C465FF33F82D8917BB84" bold="true" box="[151,318,1952,1973]" pageId="1" pageNumber="258">FIGURES 1–9.</emphasis>
<taxonomicName id="C3D64D4AFF84C465FEECF82C8A2FBB87" box="[328,518,1952,1974]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="1" pageNumber="258" phylum="Arthropoda" rank="species" species="dualis" status="sp. nov.">
<emphasis id="36A2EADBFF84C465FEECF82C8A2FBB87" box="[328,518,1952,1974]" italics="true" pageId="1" pageNumber="258">Proisotoma dualis</emphasis>
</taxonomicName>
<emphasis id="36A2EADBFF84C465FDB4F82C8A4DBB87" bold="true" box="[528,612,1953,1974]" pageId="1" pageNumber="258">
<taxonomicNameLabel id="2D9157A0FF84C465FDB4F82C8A4DBB87" box="[528,612,1953,1974]" pageId="1" pageNumber="258" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
: 1,
<emphasis id="36A2EADBFF84C465FD30F82C8AB7BB87" box="[660,670,1953,1974]" italics="true" pageId="1" pageNumber="258">s</emphasis>
-chaetae, macrochaetae and
<emphasis id="36A2EADBFF84C465FC63F82C8BFDBB87" box="[967,980,1953,1974]" italics="true" pageId="1" pageNumber="258">p</emphasis>
-rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant.1–3, lateral view; 6– 7, ocelli and PAO in mobile (6) and normal (7) form; 8–9, distal part of Leg 2 in mobile (8) and normal (9) form.
</paragraph>
</caption>
<caption id="50A96641FF87C466FF33F92B8D5FBA8A" box="[151,1398,1701,1723]" httpUri="https://zenodo.org/record/257533/files/figure.png" pageId="2" pageNumber="259" targetBox="[156,1431,198,1665]" targetPageId="2">
<paragraph id="046936C9FF87C466FF33F92B8D5FBA8A" blockId="2.[151,1398,1701,1723]" box="[151,1398,1701,1723]" pageId="2" pageNumber="259">
<emphasis id="36A2EADBFF87C466FF33F92B897ABA8A" bold="true" box="[151,339,1702,1723]" pageId="2" pageNumber="259">FIGURES 10–13.</emphasis>
<taxonomicName id="C3D64D4AFF87C466FEFEF92B8A08BA8A" box="[346,545,1702,1723]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="2" pageNumber="259" phylum="Arthropoda" rank="species" species="minima">
<emphasis id="36A2EADBFF87C466FEFEF92B8A08BA8A" box="[346,545,1702,1723]" italics="true" pageId="2" pageNumber="259">Proisotoma minima</emphasis>
</taxonomicName>
(10, 11) and
<taxonomicName id="C3D64D4AFF87C466FD0CF92B8AD6BA8A" box="[680,767,1701,1723]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="2" pageNumber="259" phylum="Arthropoda" rank="species" species="dualis" status="sp. nov.">
<emphasis id="36A2EADBFF87C466FD0CF92B8AD6BA8A" box="[680,767,1701,1723]" italics="true" pageId="2" pageNumber="259">P. dualis</emphasis>
</taxonomicName>
<emphasis id="36A2EADBFF87C466FCA1F92B8B7CBA8A" bold="true" box="[773,853,1702,1723]" pageId="2" pageNumber="259">
<taxonomicNameLabel id="2D9157A0FF87C466FCA1F92B8B7CBA8A" box="[773,853,1702,1723]" pageId="2" pageNumber="259" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(12, 13): 10, 12, normal forms; 11, 13, mobile forms.
</paragraph>
</caption>
<subSubSection id="4CCC6542FF87C467FF63F96E8A01BA1C" lastPageId="3" lastPageNumber="260" pageId="2" pageNumber="259" type="description">
<paragraph id="046936C9FF87C467FF63F96E88F2BD2C" blockId="2.[151,1437,1763,2004]" lastBlockId="3.[151,1437,151,1688]" lastPageId="3" lastPageNumber="260" pageId="2" pageNumber="259">
<emphasis id="36A2EADBFF87C466FF63F96E8970BACD" bold="true" box="[199,345,1763,1788]" pageId="2" pageNumber="259">Description.</emphasis>
Size 0.7–0.8 mm. Pigmentation weak, grey. Cuticle finely reticulated, size of largest polygons much smaller than bases of chaetae. Ocelli 8+8,
<emphasis id="36A2EADBFF87C466FD40F88A8AD1BB2E" box="[740,760,1799,1823]" italics="true" pageId="2" pageNumber="259">G</emphasis>
and
<emphasis id="36A2EADBFF87C466FC9EF8858B67BB2E" box="[826,846,1800,1823]" italics="true" pageId="2" pageNumber="259">H</emphasis>
much smaller (
<figureCitation id="9CED2A4CFF87C466FBA9F88A8C7FBB11" box="[1037,1110,1799,1824]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="2" pageNumber="259">Fig. 7</figureCitation>
), size of ocelli effected by dimorphism, in normal specimens well recognized only by pigmentation,
<emphasis id="36A2EADBFF87C466FC56F8A68C2FBB72" box="[1010,1030,1835,1859]" italics="true" pageId="2" pageNumber="259">G</emphasis>
and
<emphasis id="36A2EADBFF87C466FBE0F8A18C71BB72" box="[1092,1112,1836,1859]" italics="true" pageId="2" pageNumber="259">H</emphasis>
hardly visible. PAO with 4 guard chaetae along posterior margin, elliptical, not constricted, as long as 0.6–0.8 of Ant. 1 width and 1.0–1.4 as long as
<emphasis id="36A2EADBFF87C466FF54F8F9892DBBBA" box="[240,260,1908,1931]" italics="true" pageId="2" pageNumber="259">U</emphasis>
3 (
<figureCitation id="9CED2A4CFF87C466FE86F8FE89ADBBBD" box="[290,388,1907,1932]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="2" pageNumber="259">Fig. 6, 7</figureCitation>
). Maxillary outer lobe with simple maxillary palp and 4 sublobal hairs. Labral formula as 3/ 554. Labium with all papillae (
<emphasis id="36A2EADBFF87C466FE57F81A8A2DBB9E" box="[499,516,1943,1967]" italics="true" pageId="2" pageNumber="259">A</emphasis>
–
<emphasis id="36A2EADBFF87C466FDB6F8158A0ABB9E" box="[530,547,1944,1967]" italics="true" pageId="2" pageNumber="259">E</emphasis>
), papillae
<emphasis id="36A2EADBFF87C466FD3FF81A8A85BB9E" box="[667,684,1943,1967]" italics="true" pageId="2" pageNumber="259">A</emphasis>
–
<emphasis id="36A2EADBFF87C466FD1EF8158AE7BB9E" box="[698,718,1944,1967]" italics="true" pageId="2" pageNumber="259">D</emphasis>
with normal number of guards (1,4,0,4),
<emphasis id="36A2EADBFF87C466FB05F8158C9BBB9E" box="[1185,1202,1944,1967]" italics="true" pageId="2" pageNumber="259">E</emphasis>
with 5 guards. Main part of labium with 3 proximal and 4 basomedian chaetae. Ventral side of head with 4+4 postlabial chaetae. Ant.1 with 1 small basal ventral
<emphasis id="36A2EADBFF86C467FE19FF1A89C3BC9E" box="[445,490,151,175]" italics="true" pageId="3" pageNumber="260">bms</emphasis>
, 2 ventral
<emphasis id="36A2EADBFF86C467FDC6FF158A44BC9E" box="[610,621,152,175]" italics="true" pageId="3" pageNumber="260">s</emphasis>
, and 12 chaetae, including one
<emphasis id="36A2EADBFF86C467FC6BFF158BF4BC9E" box="[975,989,152,175]" italics="true" pageId="3" pageNumber="260">p</emphasis>
-chaeta (
<figureCitation id="9CED2A4CFF86C467FB99FF1A8CA8BC81" box="[1085,1153,151,176]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Fig. 5</figureCitation>
). Ant.2 with 3
<emphasis id="36A2EADBFF86C467FA8EFF1A8D7EBC9E" box="[1322,1367,151,175]" italics="true" pageId="3" pageNumber="260">bms</emphasis>
and 1 laterodistal
<emphasis id="36A2EADBFF86C467FEBFFF31890FBCE2" box="[283,294,188,211]" italics="true" pageId="3" pageNumber="260">s</emphasis>
not thicker than on Ant.1. Ant.3 without
<emphasis id="36A2EADBFF86C467FD5BFF318B05BCE5" box="[767,812,188,212]" italics="true" pageId="3" pageNumber="260">bms</emphasis>
and with 6 distal
<emphasis id="36A2EADBFF86C467FC5DFF318C2DBCE2" box="[1017,1028,188,211]" italics="true" pageId="3" pageNumber="260">s</emphasis>
(including two lateral of which one long and one spine-like), guard
<emphasis id="36A2EADBFF86C467FE58FF6D8A2EBCC6" box="[508,519,224,247]" italics="true" pageId="3" pageNumber="260">s</emphasis>
of AO long (
<figureCitation id="9CED2A4CFF86C467FD3AFF528AC8BCC9" box="[670,737,223,248]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Fig. 5</figureCitation>
).
<emphasis id="36A2EADBFF86C467FD53FF6D8B2CBCC9" box="[759,773,224,248]" italics="true" pageId="3" pageNumber="260">S</emphasis>
-chaetae on Ant.4 weakly differentiated, subapical organite small.
</paragraph>
<paragraph id="046936C9FF86C467FF63FEAA8BCEBFF6" blockId="3.[151,1437,151,1688]" pageId="3" pageNumber="260">
Body with smooth and rather short chaetae. Dorsal axial chaetom of Th.II–Abd.IV: 9–10,6–9/5–6,5–6,6,9–11. Th.I and II without ventral chaetae, Th.III with 1+1 (more rarely 1+2) ventral axial chaetae at ventral line. Abd.II without mid-ventral chaetae. Macrochaetae weakly differentiated, medial macrochaetae on Abd.V as long as 0.35– 0.55 of tergal midline (
<figureCitation id="9CED2A4CFF86C467FE05FE1989CABD9C" box="[417,483,404,429]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Fig. 1</figureCitation>
).
<emphasis id="36A2EADBFF86C467FE5AFE198A25BD9D" box="[510,524,404,428]" italics="true" pageId="3" pageNumber="260">S</emphasis>
-chaetae on tergites setaceous, vary in length (effected by dimorphism,
<figureCitation id="9CED2A4CFF86C467FAE4FE19889FBDE1" captionStart="FIGURES 23 – 29" captionStartId="8.[151,264,1898,1919]" captionTargetBox="[162,1424,978,1863]" captionTargetId="figure@8.[151,1435,967,1875]" captionTargetPageId="8" captionText="FIGURES 23 – 29. Morphology of Proisotoma spp: normal (23, 25) and mobile forms (24, 26) of P. dottrensi (Moscow); 23 – 24, furca; 25 – 26, ocelli and PAO; 27, 28, P. dualis sp. nov., posterior row of chaetae in mobile (27) and normal (28) forms; 29, P. brevidens, dens in mobile form." httpUri="https://zenodo.org/record/257537/files/figure.png" pageId="3" pageNumber="260">Figs 27, 28</figureCitation>
).
<emphasis id="36A2EADBFF86C467FF6AFE3588F5BDE1" box="[206,220,440,464]" italics="true" pageId="3" pageNumber="260">S</emphasis>
-formula as 3,3/2,2,2,2,4 (
<emphasis id="36A2EADBFF86C467FDA8FE358A3EBDFE" box="[524,535,440,463]" italics="true" pageId="3" pageNumber="260">s</emphasis>
) and 0,0/0,0,0 (
<emphasis id="36A2EADBFF86C467FD72FE358ADCBDFE" box="[726,757,440,463]" italics="true" pageId="3" pageNumber="260">ms</emphasis>
).
<emphasis id="36A2EADBFF86C467FCB4FE358B37BDE1" box="[784,798,440,464]" italics="true" pageId="3" pageNumber="260">S</emphasis>
-chaetae on Abd.I–V in
<emphasis id="36A2EADBFF86C467FB98FE358C63BDFE" box="[1084,1098,440,463]" italics="true" pageId="3" pageNumber="260">p</emphasis>
-row of chaetae, on Th.II–III medial
<emphasis id="36A2EADBFF86C467FF4EFE5188DCBDC2" box="[234,245,476,499]" italics="true" pageId="3" pageNumber="260">s</emphasis>
just in front of
<emphasis id="36A2EADBFF86C467FE01FE51899ABDC2" box="[421,435,476,499]" italics="true" pageId="3" pageNumber="260">p</emphasis>
-row. On Abd.V
<emphasis id="36A2EADBFF86C467FDD4FE518A52BDC2" box="[624,635,476,499]" italics="true" pageId="3" pageNumber="260">s</emphasis>
-chaetae arranged in one posterior row (
<figureCitation id="9CED2A4CFF86C467FB98FE518C55BDC4" box="[1084,1148,476,501]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Fig. 1</figureCitation>
). Unguis simple, without inner or lateral teeth. Ti.1 and Ti.2 without additional chaetae (21), Ti.3 with 25–27 chaetae.
<emphasis id="36A2EADBFF86C467FB12FD8D8CEEBE26" box="[1206,1223,512,535]" italics="true" pageId="3" pageNumber="260">B</emphasis>
-row of chaetae on Ti.1–2 complete (
<emphasis id="36A2EADBFF86C467FEC7FDA9895DBE0A" box="[355,372,548,571]" italics="true" pageId="3" pageNumber="260">B</emphasis>
4 and
<emphasis id="36A2EADBFF86C467FE19FDA989E7BE0A" box="[445,462,548,571]" italics="true" pageId="3" pageNumber="260">B</emphasis>
5 present). Modification of male spurs (
<emphasis id="36A2EADBFF86C467FC3FFDA98B8EBE0A" box="[923,935,548,571]" italics="true" pageId="3" pageNumber="260">x</emphasis>
and
<emphasis id="36A2EADBFF86C467FC47FDA98BDDBE0A" box="[995,1012,548,571]" italics="true" pageId="3" pageNumber="260">B</emphasis>
5 on Ti.3) uncertain since fully adult males not seen by us. Tibiotarsal tenent chaetae short and pointed or long and clavate (2,2,2), effected by dimorphism, if clavate 1.6–2.0 as long as
<emphasis id="36A2EADBFF86C467FDC9FDE18AA8BEB2" box="[621,641,620,643]" italics="true" pageId="3" pageNumber="260">U</emphasis>
3 (
<figureCitation id="9CED2A4CFF86C467FD3BFDE18B2DBEB4" box="[671,772,620,645]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Figs 8, 9</figureCitation>
). Legs 1, 2, 3 with 1,1; 1,4; 4(5),5(6) chaetae on upper and lower subcoxa, respectively (
<figureCitation id="9CED2A4CFF86C467FE57FD028A13BE99" box="[499,570,655,680]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Fig. 1</figureCitation>
). Ventral tube with 4+4 distal and 4 posterior chaetae arranged in one transversal row. Tenaculum with 3+3 teeth and 3 chaetae. Anterior furcal subcoxae with 15–17 chaetae, posterior subcoxae with 6 chaetae. Anterior side of manubrium with a pair of distal chaetae (
<figureCitation id="9CED2A4CFF86C467FBEEFD5A8CA6BEC1" box="[1098,1167,727,752]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Fig. 2</figureCitation>
), posterior side with 9– 10+9–10 chaetae on main part, lateral edges with one chaeta each (
<figureCitation id="9CED2A4CFF86C467FC6EFD718C3DBF24" box="[970,1044,764,789]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Fig. 2</figureCitation>
), chaetotaxy of laterobasal lobes uncertain (at least with 4+4 chaetae). Dens rather short, effected by dimorphism: ratio dens: Ti.3 = 0.5–0.65 (normal form) or 0.65–0.75 (mobile form). Anterior side of dens with 6 chaetae arranged as 1,2,3, distal three in one transversal row (
<figureCitation id="9CED2A4CFF86C467FE25FCEA89CFBFB1" box="[385,486,871,896]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Figs 2, 4</figureCitation>
,
<figureCitation id="9CED2A4CFF86C467FE56FCEA8A27BFB1" box="[498,526,871,896]" captionStart="FIGURES 15 – 16" captionStartId="6.[151,264,1902,1923]" captionTargetBox="[159,1400,452,1866]" captionTargetPageId="6" captionText="FIGURES 15 – 16. Furcal complex of mobile forms of Proisotoma dualis sp. nov. (15) and P. minima (16)." httpUri="https://zenodo.org/record/257535/files/figure.png" pageId="3" pageNumber="260">15</figureCitation>
) Posterior side of dens weakly crenulated or with humps and 4 chaetae, arranged as one chaeta at base, two at the middle and one distally (
<figureCitation id="9CED2A4CFF86C467FC95FC018B5EBF94" box="[817,887,908,933]" captionStart="FIGURES 1 – 9" captionStartId="1.[151,264,1952,1973]" captionTargetBox="[154,1427,328,1926]" captionTargetId="figure@1.[151,1435,325,1931]" captionTargetPageId="1" captionText="FIGURES 1 – 9. Proisotoma dualis sp. nov.: 1, s - chaetae, macrochaetae and p - rows on body tergites; 2, posterior half of abdomen, lateral view in normal form; 3,4 furca in mobile form, posterior (3) and lateral view (4); 5, Ant. 1 – 3, lateral view; 6 – 7, ocelli and PAO in mobile (6) and normal (7) form; 8 – 9, distal part of Leg 2 in mobile (8) and normal (9) form." httpUri="https://zenodo.org/record/257532/files/figure.png" pageId="3" pageNumber="260">Fig. 3</figureCitation>
). Mucro with 3 teeth as common for the genus. Ratio of manubrium: dens: mucro = 3.3–4.8: 2.0–3.1: 1.0. Males present.
</paragraph>
<paragraph id="046936C9FF86C467FF63FC598A01BA1C" blockId="3.[151,1437,151,1688]" pageId="3" pageNumber="260">
<emphasis id="36A2EADBFF86C467FF63FC59890ABFDC" bold="true" box="[199,291,980,1005]" pageId="3" pageNumber="260">Affinity</emphasis>
.
<taxonomicName id="C3D64D4AFF86C467FE94FC5989D4BFDD" box="[304,509,980,1004]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="dualis" status="sp. nov.">
<emphasis id="36A2EADBFF86C467FE94FC5989D4BFDD" box="[304,509,980,1004]" italics="true" pageId="3" pageNumber="260">Proisotoma dualis</emphasis>
</taxonomicName>
<emphasis id="36A2EADBFF86C467FDA1FC588A76BFDD" bold="true" box="[517,607,981,1004]" pageId="3" pageNumber="260">
<taxonomicNameLabel id="2D9157A0FF86C467FDA1FC588A76BFDD" box="[517,607,981,1004]" pageId="3" pageNumber="260" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is a typical member of
<taxonomicName id="C3D64D4AFF86C467FCCCFC59894CB821" authority="Borner, 1901 sensu Potapov, Babenko &amp; Fjellberg, 2006" authorityName="Borner, 1901 sensu Potapov, Babenko &amp; Fjellberg" authorityYear="2006" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="genus">
<emphasis id="36A2EADBFF86C467FCCCFC598BC3BFDA" box="[872,1002,980,1003]" italics="true" pageId="3" pageNumber="260">Proisotoma</emphasis>
Börner, 1901
<emphasis id="36A2EADBFF86C467FB2FFC598CE0BFDA" box="[1163,1225,980,1003]" italics="true" pageId="3" pageNumber="260">sensu</emphasis>
Potapov, Babenko &amp; Fjellberg, 2006
</taxonomicName>
by having
<emphasis id="36A2EADBFF86C467FE49FC7589D1B83E" box="[493,504,1016,1039]" italics="true" pageId="3" pageNumber="260">s</emphasis>
-chaetae on the abdomen in the
<emphasis id="36A2EADBFF86C467FCD5FC758B56B83E" box="[881,895,1016,1039]" italics="true" pageId="3" pageNumber="260">p</emphasis>
-row, reduced
<emphasis id="36A2EADBFF86C467FB82FC758C6FB83E" box="[1062,1094,1016,1039]" italics="true" pageId="3" pageNumber="260">ms</emphasis>
set, two guards lost in labial papilla
<emphasis id="36A2EADBFF86C467FF4FFB9188D5B802" box="[235,252,1052,1075]" italics="true" pageId="3" pageNumber="260">E</emphasis>
, simple palp of maxillary outer lobe and other characters. For the genus, so far only
<emphasis id="36A2EADBFF86C467FB1FFB918D0BB802" box="[1211,1314,1052,1075]" italics="true" pageId="3" pageNumber="260">P. m i n ut a</emphasis>
(Tullberg, 1871) and
<taxonomicName id="C3D64D4AFF86C467FEB5FBCD8AD0B869" authority="Palacios-Vargas &amp; Arbea, 2009" authorityName="Palacios-Vargas &amp; Arbea" authorityYear="2009" box="[273,761,1087,1112]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="turikana">
<emphasis id="36A2EADBFF86C467FEB5FBCD89A4B866" box="[273,397,1087,1111]" italics="true" pageId="3" pageNumber="260">P. turikana</emphasis>
Palacios-Vargas &amp; Arbea, 2009
</taxonomicName>
show a formula &quot;0,0,1+1&quot; for the ventral chaetotaxy of the thorax. Both species differ from
<taxonomicName id="C3D64D4AFF86C467FDADFBE98A43B84D" box="[521,618,1124,1148]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="dualis" status="sp. nov.">
<emphasis id="36A2EADBFF86C467FDADFBE98A43B84D" box="[521,618,1124,1148]" italics="true" pageId="3" pageNumber="260">P. dualis</emphasis>
</taxonomicName>
<emphasis id="36A2EADBFF86C467FDD6FBE88AE5B84D" bold="true" box="[626,716,1125,1148]" pageId="3" pageNumber="260">
<taxonomicNameLabel id="2D9157A0FF86C467FDD6FBE88AE5B84D" box="[626,716,1125,1148]" pageId="3" pageNumber="260" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
with the presence of
<emphasis id="36A2EADBFF86C467FC65FBE98BC9B84A" box="[961,992,1124,1147]" italics="true" pageId="3" pageNumber="260">ms</emphasis>
on Th.II (
<emphasis id="36A2EADBFF86C467FBF3FBE98C5FB84A" box="[1111,1142,1124,1147]" italics="true" pageId="3" pageNumber="260">ms</emphasis>
formula 1,0/0,0,0 vs. 0,0/ 0,0,0), more chaetae on the posterior side of the dens (6 and 7, respectively, vs. 4), &quot;4+4,1&quot; formula of the tenaculum (vs. &quot;3+3,3&quot;), and the presence of a transverse row of mid-ventral chaetae on Abd.II (absent in
<taxonomicName id="C3D64D4AFF86C467FA98FB218DB5B8F5" box="[1340,1436,1196,1220]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="dualis" status="sp. nov.">
<emphasis id="36A2EADBFF86C467FA98FB218DB5B8F5" box="[1340,1436,1196,1220]" italics="true" pageId="3" pageNumber="260">P. dualis</emphasis>
</taxonomicName>
<emphasis id="36A2EADBFF86C467FF33FB5D88D5B8D9" bold="true" box="[151,252,1231,1256]" pageId="3" pageNumber="260">
<taxonomicNameLabel id="2D9157A0FF86C467FF33FB5D88DCB8D9" box="[151,245,1231,1256]" pageId="3" pageNumber="260" rank="species">sp. nov.</taxonomicNameLabel>
)
</emphasis>
. Additional differences are the 4,4/3,3,3,3,4
<emphasis id="36A2EADBFF86C467FCA2FB5D8B38B8D6" box="[774,785,1232,1255]" italics="true" pageId="3" pageNumber="260">s</emphasis>
-formula and 5 ocelli in
<taxonomicName id="C3D64D4AFF86C467FB95FB5D8C86B8D6" box="[1073,1199,1231,1255]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="turikana">
<emphasis id="36A2EADBFF86C467FB95FB5D8C86B8D6" box="[1073,1199,1231,1255]" italics="true" pageId="3" pageNumber="260">P. turikana</emphasis>
</taxonomicName>
and the presence of additional
<emphasis id="36A2EADBFF86C467FEAAFB798930B93A" box="[270,281,1268,1291]" italics="true" pageId="3" pageNumber="260">s</emphasis>
-chaetae on Ant.3 in
<taxonomicName id="C3D64D4AFF86C467FDA1FB798A46B93A" box="[517,623,1268,1291]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="minuta">
<emphasis id="36A2EADBFF86C467FDA1FB798A46B93A" box="[517,623,1268,1291]" italics="true" pageId="3" pageNumber="260">P. minuta</emphasis>
</taxonomicName>
. Apparently, by having two rare characters, 3+3 teeth on tenaculum and 0,0/0,0,0
<emphasis id="36A2EADBFF86C467FEA5FA958909B91E" box="[257,288,1304,1327]" italics="true" pageId="3" pageNumber="260">ms</emphasis>
-formula, the new species is closely related to
<emphasis id="36A2EADBFF86C467FC8AFA958B8EB91E" box="[814,935,1304,1327]" italics="true" pageId="3" pageNumber="260">
<taxonomicName id="C3D64D4AFF86C467FC8AFA958B8BB91E" box="[814,930,1304,1327]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="minima">P. minima</taxonomicName>
.
</emphasis>
They differ in the number of ocelli (8+8 vs. 5+5), ventral chaetotaxy of Th.III (1+1 vs. 0+0), number of chaetae on tenaculum (3 vs. 1), and number of chaetae on posterior side of dens (4 vs. 5). The absence of
<emphasis id="36A2EADBFF86C467FD47FAED8B22B946" box="[739,779,1376,1399]" italics="true" pageId="3" pageNumber="260">ms-</emphasis>
chaetae on all tergites of the body in
<taxonomicName id="C3D64D4AFF86C467FB1DFAED8D35B946" box="[1209,1308,1375,1399]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="dualis" status="sp. nov.">
<emphasis id="36A2EADBFF86C467FB1DFAED8D35B946" box="[1209,1308,1375,1399]" italics="true" pageId="3" pageNumber="260">P. dualis</emphasis>
</taxonomicName>
<emphasis id="36A2EADBFF86C467FA80FAED8DA9B946" bold="true" box="[1316,1408,1376,1399]" pageId="3" pageNumber="260">
<taxonomicNameLabel id="2D9157A0FF86C467FA80FAED8DA9B946" box="[1316,1408,1376,1399]" pageId="3" pageNumber="260" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is unusual. Apart from
<emphasis id="36A2EADBFF86C467FE22FA0989DDB9AA" box="[390,500,1412,1435]" italics="true" pageId="3" pageNumber="260">P. m i n i m a</emphasis>
, this peculiarity is probably shared with
<taxonomicName id="C3D64D4AFF86C467FC69FA0988E6B9F1" authority="Palacios-Vargas &amp; Arbea, 2009" authorityName="Palacios-Vargas &amp; Arbea" authorityYear="2009" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="santosorum">
<emphasis id="36A2EADBFF86C467FC69FA098C47B9AA" box="[973,1134,1412,1435]" italics="true" pageId="3" pageNumber="260">P. santosorum</emphasis>
Palacios-Vargas &amp; Arbea, 2009
</taxonomicName>
described from a juvenile female collected in a cave in Venezuela. Missing of
<emphasis id="36A2EADBFF86C467FBFDFA258C51B98E" box="[1113,1144,1448,1471]" italics="true" pageId="3" pageNumber="260">ms</emphasis>
-chaetae in
<taxonomicName id="C3D64D4AFF86C467FB58FA258DB2B98E" box="[1276,1435,1448,1471]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="santosorum">
<emphasis id="36A2EADBFF86C467FB58FA258DB2B98E" box="[1276,1435,1448,1471]" italics="true" pageId="3" pageNumber="260">P. santosorum</emphasis>
</taxonomicName>
are assumed by us on the basis that they were neither figured nor mentioned in first description.
<taxonomicName id="C3D64D4AFF86C467FABEFA418933BA36" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="santosorum">
<emphasis id="36A2EADBFF86C467FABEFA418933BA36" italics="true" pageId="3" pageNumber="260">Proisotoma santosorum</emphasis>
</taxonomicName>
more resembles
<taxonomicName id="C3D64D4AFF86C467FE7AFA7D8A79BA36" box="[478,592,1520,1543]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="3" pageNumber="260" phylum="Arthropoda" rank="species" species="minima">
<emphasis id="36A2EADBFF86C467FE7AFA7D8A79BA36" box="[478,592,1520,1543]" italics="true" pageId="3" pageNumber="260">P. minima</emphasis>
</taxonomicName>
since they share missing chaetae on Th.III, one chaeta on the tenaculum, and 5 posterior chaetae on the dens.
</paragraph>
</subSubSection>
<subSubSection id="4CCC6542FF86C467FF63F9BA8AC0BAA9" pageId="3" pageNumber="260" type="distribution">
<paragraph id="046936C9FF86C467FF63F9BA892DBA45" blockId="3.[151,1437,151,1688]" pageId="3" pageNumber="260">
<emphasis id="36A2EADBFF86C467FF63F9BA89DDBA7E" bold="true" box="[199,500,1591,1616]" pageId="3" pageNumber="260">Distribution and ecology.</emphasis>
Known from two localities in the Baikal region. It occurs only under loose bark of dead tree.
</paragraph>
<paragraph id="046936C9FF86C467FF63F90D8AC0BAA9" blockId="3.[151,1437,151,1688]" box="[199,745,1663,1688]" pageId="3" pageNumber="260">
<emphasis id="36A2EADBFF86C467FF63F90D89BFBAA9" bold="true" box="[199,406,1663,1688]" pageId="3" pageNumber="260">Name derivation.</emphasis>
It is named after dimorphism.
</paragraph>
</subSubSection>
</treatment>
</document>
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