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<document ID-DOI="10.11646/zootaxa.1382.1.1" ID-ISSN="1175­5334" ID-Zenodo-Dep="5071464" approvalRequired="23" approvalRequired_for_textStreams="19" approvalRequired_for_treatments="4" checkinTime="1625513084377" checkinUser="felipe" docAuthor="Potapov, Mikhail, Babenko, Anatoly &amp; Fjellberg, Arne" docDate="2006" docId="039587D4FFBBFFC61373FD9A744DF967" docLanguage="en" docName="zt01382p074.pdf" docOrigin="Zootaxa 1382 (1)" docSource="https://biotaxa.org/Zootaxa/article/view/zootaxa.1382.1.1" docStyle="DocumentStyle:8B0D3ECF822058C8413568C103B59429.3:Zootaxa.2001-2006.monograph" docStyleId="8B0D3ECF822058C8413568C103B59429" docStyleName="Zootaxa.2001-2006.monograph" docStyleVersion="3" docTitle="Weberacantha Christiansen 1951" docType="treatment" docVersion="3" lastPageNumber="58" masterDocId="FFACFFACFF83FFFF127BFFC07079FF9B" masterDocTitle="Taxonomy of the Proisotoma complex. Redefinition of genera and description of new species of Scutisotoma and Weberacantha (Collembola, Isotomidae)" masterLastPageNumber="74" masterPageNumber="1" pageNumber="57" updateTime="1651296163525" updateUser="GgImagineBatch" zenodo-license-document="CLOSED">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Taxonomy of the Proisotoma complex. Redefinition of genera and description of new species of Scutisotoma and Weberacantha (Collembola, Isotomidae)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Potapov, Mikhail</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Babenko, Anatoly</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Fjellberg, Arne</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>Zootaxa</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2006</mods:date>
<mods:detail type="pubDate">
<mods:number>2006-12-14</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>1382</mods:number>
</mods:detail>
<mods:detail type="issue">
<mods:number>1</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>74</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>https://biotaxa.org/Zootaxa/article/view/zootaxa.1382.1.1</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">10.11646/zootaxa.1382.1.1</mods:identifier>
<mods:identifier type="ISSN">1175­5334</mods:identifier>
<mods:identifier type="Zenodo-Dep">5071464</mods:identifier>
</mods:mods>
<treatment LSID="urn:lsid:plazi:treatment:039587D4FFBBFFC61373FD9A744DF967" httpUri="http://treatment.plazi.org/id/039587D4FFBBFFC61373FD9A744DF967" lastPageId="57" lastPageNumber="58" pageId="56" pageNumber="57">
<subSubSection box="[264,678,602,628]" pageId="56" pageNumber="57" type="nomenclature">
<paragraph blockId="56.[264,678,602,628]" box="[264,678,602,628]" pageId="56" pageNumber="57">
<heading bold="true" box="[264,678,602,628]" fontSize="11" level="1" pageId="56" pageNumber="57" reason="1">
<taxonomicName authority="Christiansen, 1951" authorityName="Christiansen" authorityYear="1951" box="[264,678,602,628]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="genus">
<emphasis bold="true" box="[264,678,602,628]" pageId="56" pageNumber="57">
<emphasis bold="true" box="[264,437,602,628]" italics="true" pageId="56" pageNumber="57">Weberacantha</emphasis>
<bibRefCitation author="Christiansen, K. A." box="[445,678,602,628]" pageId="56" pageNumber="57" pagination="24 - 31" refId="ref31468" refString="Christiansen, K. A. (1951) Notes on Alaskan Collembola. I. A new genus and species of the family Isotomidae. Psyche, 58 (1), 24 - 31." type="journal article" year="1951">Christiansen, 1951</bibRefCitation>
</emphasis>
</taxonomicName>
</heading>
</paragraph>
</subSubSection>
<subSubSection box="[264,760,682,705]" pageId="56" pageNumber="57" type="materials_examined">
<paragraph blockId="56.[264,760,682,705]" box="[264,760,682,705]" pageId="56" pageNumber="57">
<typeStatus box="[264,317,682,705]" pageId="56" pageNumber="57">Type</typeStatus>
species:
<taxonomicName authority="Christiansen" authorityName="Christiansen" box="[415,760,682,705]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="species" species="Octa">
<emphasis box="[415,620,682,705]" italics="true" pageId="56" pageNumber="57">Weberacantha octa</emphasis>
Christiansen
</taxonomicName>
</paragraph>
</subSubSection>
<subSubSection pageId="56" pageNumber="57" type="diagnosis">
<paragraph blockId="56.[264,1323,754,1866]" pageId="56" pageNumber="57">
<emphasis bold="true" box="[264,392,754,780]" pageId="56" pageNumber="57">Diagnosis.</emphasis>
<taxonomicName box="[405,582,754,780]" class="Entognatha" family="Isotomidae" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="subFamily" subFamily="Anurophorinae">Anurophorinae</taxonomicName>
with all abdominal segments clearly separated. Manubrium with distal chaetae on anterior side. Furca stout, with a robust mucro. Tergal sensilla on abdomen in mid-tergal position, all microsensilla present (11/111). B-row on Ti.1–2 complete.
</paragraph>
<paragraph blockId="56.[264,1323,754,1866]" pageId="56" pageNumber="57">
Colour dark, integument with visible granulation. Ocelli 6–8 on each side of head. PAO long and narrow (
<figureCitation box="[545,647,954,980]" captionStart="FIGURES 151–155" captionStartId="57.[264,382,1543,1567]" captionTargetBox="[282,1295,317,1509]" captionTargetId="figure-90@57.[262,1321,300,1521]" captionTargetPageId="57" captionText="FIGURES 151–155. Weberacantha octa. 151, general distribution of macrochaetae, sensilla and microsensilla on body; 152, dens, lateral view; 153, PAO and ocelli; 154, chaetotaxy of Abd.V (s: sensilla, connected); 155, claw on leg 3." figureDoi="http://doi.org/10.5281/zenodo.5071518" httpUri="https://zenodo.org/record/5071518/files/figure.png" pageId="56" pageNumber="57">Fig. 153</figureCitation>
). Ant.1–3 with full set of bms. Maxillary palp bifurcate with 4 sublobal hairs. Labial papilla E with a full set of guards. Labral chaetotaxy as 4/ 554. Sensillary formula of Th.II–Abd.V as 33/22224. Thorax usually without ventral chaetae. Ventral tube with 3+3 or more laterodistal chaetae and more than 2 posterior chaetae. Macrochaetae differentiated, those on abdominal tip may be thickened or spinelike. Tibiotarsal tenent chaetae (A
<subScript attach="left" box="[663,671,1170,1184]" fontSize="6" pageId="56" pageNumber="57">1</subScript>
on Ti.1, A
<subScript attach="left" box="[800,808,1170,1184]" fontSize="6" pageId="56" pageNumber="57">1</subScript>
and A
<subScript attach="left" box="[887,895,1170,1184]" fontSize="6" pageId="56" pageNumber="57">7</subScript>
on Ti.2–3) differentiated, clavate or pointed. Tibiotarsi without T-chaeta, chaetae x and B
<subScript attach="left" box="[894,902,1213,1227]" fontSize="6" pageId="56" pageNumber="57">5</subScript>
on Ti.
<quantity box="[982,1027,1197,1223]" metricMagnitude="-2" metricUnit="m" metricValue="7.62" pageId="56" pageNumber="57" unit="in" value="3.0">3 in</quantity>
males slightly modified. Unguis with or without inner tooth. Anterior chaetae on dens only on its distal part. Mucro robust, about half as long as dens, with 2–3 teeth and no lamellae (
<figureCitation box="[1044,1147,1280,1306]" captionStart="FIGURES 151–155" captionStartId="57.[264,382,1543,1567]" captionTargetBox="[282,1295,317,1509]" captionTargetId="figure-90@57.[262,1321,300,1521]" captionTargetPageId="57" captionText="FIGURES 151–155. Weberacantha octa. 151, general distribution of macrochaetae, sensilla and microsensilla on body; 152, dens, lateral view; 153, PAO and ocelli; 154, chaetotaxy of Abd.V (s: sensilla, connected); 155, claw on leg 3." figureDoi="http://doi.org/10.5281/zenodo.5071518" httpUri="https://zenodo.org/record/5071518/files/figure.png" pageId="56" pageNumber="57">Fig. 152</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection lastPageId="57" lastPageNumber="58" pageId="56" pageNumber="57" type="discussion">
<paragraph blockId="56.[264,1323,754,1866]" pageId="56" pageNumber="57">
<emphasis bold="true" box="[312,451,1320,1346]" pageId="56" pageNumber="57">Discussion.</emphasis>
The spine-like chaetae of
<taxonomicName box="[772,1000,1320,1345]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="species" species="Octa">
<emphasis box="[772,1000,1320,1345]" italics="true" pageId="56" pageNumber="57">Weberacantha octa</emphasis>
</taxonomicName>
vary in shape and number and have no distinct papillae (
<figureCitation box="[636,743,1360,1386]" captionStart="FIGURES 151–155" captionStartId="57.[264,382,1543,1567]" captionTargetBox="[282,1295,317,1509]" captionTargetId="figure-90@57.[262,1321,300,1521]" captionTargetPageId="57" captionText="FIGURES 151–155. Weberacantha octa. 151, general distribution of macrochaetae, sensilla and microsensilla on body; 152, dens, lateral view; 153, PAO and ocelli; 154, chaetotaxy of Abd.V (s: sensilla, connected); 155, claw on leg 3." figureDoi="http://doi.org/10.5281/zenodo.5071518" httpUri="https://zenodo.org/record/5071518/files/figure.png" pageId="56" pageNumber="57">Fig. 154</figureCitation>
). We do not consider these spines as a generic character but rather as an example of a modification of the abdominal tip which is frequent among members of the
<taxonomicName authorityName="Borner" authorityYear="1901" box="[541,677,1440,1465]" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="genus">
<emphasis box="[541,677,1440,1465]" italics="true" pageId="56" pageNumber="57">Proisotoma</emphasis>
</taxonomicName>
complex. The low generic value of such modifications is supported by the existence of intermediate forms between “armed” and “unarmed” species like
<taxonomicName authority="Potapov &amp; Babenko &amp; Fjellberg, 2006" authorityName="Potapov &amp; Babenko &amp; Fjellberg" authorityYear="2006" box="[408,620,1520,1545]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="species" species="Echinodermata" status="sp.n.">
<emphasis box="[408,620,1520,1545]" italics="true" pageId="56" pageNumber="57">W. echinodermata</emphasis>
</taxonomicName>
<emphasis bold="true" box="[628,686,1520,1546]" pageId="56" pageNumber="57">
<taxonomicNameLabel box="[628,686,1520,1546]" pageId="56" pageNumber="57" rank="species">sp.n.</taxonomicNameLabel>
</emphasis>
(
<figureCitation box="[702,805,1520,1546]" captionStart="FIGURES 156–168" captionStartId="59.[264,382,1733,1757]" captionTargetBox="[301,1285,432,1703]" captionTargetId="figure-100@59.[285,1305,428,1703]" captionTargetPageId="59" captionText="FIGURES 156–168. Weberacantha echinodermata sp.n. 156, furca posterior; 157–158, dens, anterior (157) and lateral (158); 159, PAO and ocelli; 160, VT; 161, chaetotaxy of Abd.V (s: sensilla, connected); 162, microsensillum; 163, sensillum; 164, macrochaetae on Abd.IV; 165–167, Abd.V, spine-like macrochaetae (165), thick microchaeta (166) and sensillum (167); 168, general distribution of macrochaetae, sensilla and microsensilla on body." figureDoi="http://doi.org/10.5281/zenodo.5071520" httpUri="https://zenodo.org/record/5071520/files/figure.png" pageId="56" pageNumber="57">Fig. 161</figureCitation>
). Regardless of spines on Abd.V in the
<typeStatus box="[1272,1322,1520,1546]" pageId="56" pageNumber="57">type</typeStatus>
species,
<taxonomicName authorityName="Christiansen" authorityYear="1951" box="[364,532,1560,1585]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="genus">
<emphasis box="[364,532,1560,1585]" italics="true" pageId="56" pageNumber="57">Weberacantha</emphasis>
</taxonomicName>
shares all significant characters of
<taxonomicName authorityName="Bagnall" authorityYear="1949" box="[949,1092,1560,1585]" class="Collembola" family="Isotomidae" genus="Scutisotoma" higherTaxonomySource="CoL" kingdom="Animalia" order="Entomobryomorpha" pageId="56" pageNumber="57" phylum="Arthropoda" rank="genus">
<emphasis box="[949,1092,1560,1585]" italics="true" pageId="56" pageNumber="57">Scutisotoma</emphasis>
</taxonomicName>
and is only weakly separated from the latter by the short furca with a strong mucro and the long, narrow PAO. Nevertheless, five species, included by us in
<taxonomicName authorityName="Christiansen" authorityYear="1951" box="[836,1004,1640,1665]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="genus">
<emphasis box="[836,1004,1640,1665]" italics="true" pageId="56" pageNumber="57">Weberacantha</emphasis>
</taxonomicName>
, represent a homogenous species-group which is easily recognized by their general appearance.
</paragraph>
<paragraph blockId="56.[264,1323,754,1866]" pageId="56" pageNumber="57">
<taxonomicName authorityName="Christiansen" authorityYear="1951" box="[312,480,1720,1745]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="genus">
<emphasis box="[312,480,1720,1745]" italics="true" pageId="56" pageNumber="57">Weberacantha</emphasis>
</taxonomicName>
in this widened view is probably related to the small Asiatic genus
<emphasis box="[264,360,1760,1785]" italics="true" pageId="56" pageNumber="57">Narynia</emphasis>
<bibRefCitation author="Martynova, E. F." box="[377,591,1760,1786]" pageId="56" pageNumber="57" pagination="32 - 46" refId="ref32164" refString="Martynova, E. F. (1967) Materialy po faune nogochvostik (Collembola) Srednej Azii. [In Russian]. Izvestiya Akademii Nauk Tadzhiksoi SSR, Otdelenie Biolocheskikh Nauk, 3, 32 - 46." type="journal article" year="1967">Martynova, 1967</bibRefCitation>
, whose generic status is uncertain.
<emphasis box="[1060,1156,1760,1785]" italics="true" pageId="56" pageNumber="57">Narynia</emphasis>
differs from
<taxonomicName authorityName="Christiansen" authorityYear="1951" box="[264,432,1800,1825]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="56" pageNumber="57" phylum="Arthropoda" rank="genus">
<emphasis box="[264,432,1800,1825]" italics="true" pageId="56" pageNumber="57">Weberacantha</emphasis>
</taxonomicName>
only by the absence of anterior chaetae on manubrium and presence of a row of straight horizontal macrochaetae on tip of abdomen.
</paragraph>
<caption ID-DOI="http://doi.org/10.5281/zenodo.5071518" ID-Zenodo-Dep="5071518" httpUri="https://zenodo.org/record/5071518/files/figure.png" pageId="57" pageNumber="58" startId="57.[264,382,1543,1567]" targetBox="[282,1295,317,1509]" targetPageId="57">
<paragraph blockId="57.[264,1322,1543,1636]" pageId="57" pageNumber="58">
<emphasis bold="true" box="[264,492,1543,1567]" pageId="57" pageNumber="58">FIGURES 151–155.</emphasis>
<emphasis box="[501,716,1544,1567]" italics="true" pageId="57" pageNumber="58">
<taxonomicName box="[501,712,1544,1567]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="57" pageNumber="58" phylum="Arthropoda" rank="species" species="Octa">Weberacantha octa</taxonomicName>
.
</emphasis>
151, general distribution of macrochaetae, sensilla and microsensilla on body; 152, dens, lateral view; 153, PAO and ocelli; 154, chaetotaxy of Abd.V (s: sensilla, connected); 155, claw on leg 3.
</paragraph>
</caption>
<paragraph blockId="57.[264,1322,1682,1788]" pageId="57" pageNumber="58">
<emphasis bold="true" box="[312,663,1682,1708]" pageId="57" pageNumber="58">Known species of the genus.</emphasis>
Besides the
<typeStatus box="[814,864,1682,1708]" pageId="57" pageNumber="58">type</typeStatus>
species, we included in
<taxonomicName authorityName="Christiansen" authorityYear="1951" box="[1154,1322,1682,1707]" class="Entognatha" family="Isotomidae" genus="Weberacantha" kingdom="Animalia" order="Collembola" pageId="57" pageNumber="58" phylum="Arthropoda" rank="genus">
<emphasis box="[1154,1322,1682,1707]" italics="true" pageId="57" pageNumber="58">Weberacantha</emphasis>
</taxonomicName>
two known species of the complex:
<taxonomicName authority="Stebaeva" authorityName="Stebaeva" box="[748,1109,1722,1748]" class="Entognatha" family="Isotomidae" genus="Folsomides" kingdom="Animalia" order="Collembola" pageId="57" pageNumber="58" phylum="Arthropoda" rank="species" species="Beckeri">
<emphasis box="[748,987,1722,1747]" italics="true" pageId="57" pageNumber="58">Folsomides beckeri</emphasis>
Stebaeva
</taxonomicName>
and
<taxonomicName authority="Yosii. Two" authorityName="Yosii. Two" authorityYear="2006" class="Entognatha" family="Isotomidae" genus="Proisotoma" kingdom="Animalia" order="Collembola" pageId="57" pageNumber="58" phylum="Arthropoda" rank="species" species="Janetscheki" status="new species">
<emphasis italics="true" pageId="57" pageNumber="58">Proisotoma janetscheki</emphasis>
Yosii. Two
</taxonomicName>
<taxonomicNameLabel box="[538,679,1762,1788]" pageId="57" pageNumber="58" rank="species">new species</taxonomicNameLabel>
of the genus are described below.
</paragraph>
</subSubSection>
</treatment>
</document>
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