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<mods:title id="E76517E872C48CC08C859DEFF9CBD8C1">A review of the spider genus Porrhomma (Araneae, Linyphiidae)</mods:title>
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<treatment id="03C6A93BFF97FF94FF7CFF1F831A3BCE" ID-DOI="http://doi.org/10.5281/zenodo.5964020" ID-GBIF-Taxon="148682860" ID-Zenodo-Dep="5964020" LSID="urn:lsid:plazi:treatment:03C6A93BFF97FF94FF7CFF1F831A3BCE" httpUri="http://treatment.plazi.org/id/03C6A93BFF97FF94FF7CFF1F831A3BCE" lastPageNumber="66" pageId="65" pageNumber="66">
<subSubSection id="C3754BA6FF97FF94FF7CFF1F84B938CB" box="[151,662,151,178]" pageId="65" pageNumber="66" type="nomenclature">
<paragraph id="8BD0182DFF97FF94FF7CFF1F84B938CB" blockId="65.[151,662,151,178]" box="[151,662,151,178]" pageId="65" pageNumber="66">
<heading id="D098AF41FF97FF94FF7CFF1F84B938CB" bold="true" box="[151,662,151,178]" fontSize="11" level="1" pageId="65" pageNumber="66" reason="1">
<taxonomicName id="4C6F63AEFF97FF94FF7CFF1F84B938CB" authority="(Emerton, 1917)" baseAuthorityName="Emerton" baseAuthorityYear="1917" box="[151,662,151,178]" class="Arachnida" family="Linyphiidae" genus="Porrhomma" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="macrochelis">
<emphasis id="B91BC43FFF97FF94FF7CFF1F84B938CB" bold="true" box="[151,662,151,178]" pageId="65" pageNumber="66">
<emphasis id="B91BC43FFF97FF94FF7CFF1F87EC38C8" bold="true" box="[151,451,151,177]" italics="true" pageId="65" pageNumber="66">Porrhomma macrochelis</emphasis>
(
<bibRefCitation id="EFFE65DCFF97FF94FE38FF1084A138CB" box="[467,654,152,178]" pageId="65" pageNumber="66" refId="ref39921" refString="Emerton, J. H. (1917) New spiders from Canada and the adjoining states. The Canadian Entomologist, 49, 261 - 272. https: // doi. org / 10.4039 / Ent 49261 - 8" type="journal article">Emerton, 1917</bibRefCitation>
)
</emphasis>
</taxonomicName>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C3754BA6FF97FF94FF7CFF5684D5394B" pageId="65" pageNumber="66" type="reference_group">
<paragraph id="8BD0182DFF97FF94FF7CFF5682FA396A" blockId="65.[151,1436,222,306]" pageId="65" pageNumber="66">
<taxonomicName id="4C6F63AEFF97FF94FF7CFF56846F388D" authority="Emerton, 1917" authorityName="Emerton" authorityYear="1917" box="[151,576,222,244]" class="Arachnida" family="Linyphiidae" genus="Gongylidium" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="macrochelis">
<emphasis id="B91BC43FFF97FF94FF7CFF5687B0388D" box="[151,415,222,244]" italics="true" pageId="65" pageNumber="66">Gongylidium macrochelis</emphasis>
<bibRefCitation id="EFFE65DCFF97FF94FE42FF57846F388D" box="[425,576,222,244]" pageId="65" pageNumber="66" refId="ref39921" refString="Emerton, J. H. (1917) New spiders from Canada and the adjoining states. The Canadian Entomologist, 49, 261 - 272. https: // doi. org / 10.4039 / Ent 49261 - 8" type="journal article">Emerton, 1917</bibRefCitation>
</taxonomicName>
<bibRefCitation id="EFFE65DCFF97FF94FDB1FF56852B388D" box="[602,772,222,244]" pageId="65" pageNumber="66" refId="ref39921" refString="Emerton, J. H. (1917) New spiders from Canada and the adjoining states. The Canadian Entomologist, 49, 261 - 272. https: // doi. org / 10.4039 / Ent 49261 - 8" type="journal article">Emerton (1917)</bibRefCitation>
: p. 263, Figs. 15.13 (descr. ♂); synonymised with
<taxonomicName id="4C6F63AEFF97FF94FAC7FF68841A396A" ID-CoL="6R2JT" authority="(O. Pickard-Cambridge)" authorityName="O. Pickard-Cambridge" baseAuthorityName="O. Pickard-Cambridge" baseAuthorityYear="1875" class="Arachnida" family="Linyphiidae" genus="Macrargus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="multesimus">
<emphasis id="B91BC43FFF97FF94FAC7FF688716396A" italics="true" pageId="65" pageNumber="66">Macrargus multesimus</emphasis>
(O. Pickard-Cambridge)
</taxonomicName>
by
<bibRefCitation id="EFFE65DCFF97FF94FDB0FF75850E396A" box="[603,801,253,275]" pageId="65" pageNumber="66" refId="ref39197" refString="Buckle, D. J., Carroll, D., Crawford, R. L. &amp; Roth, V. D. (2001) Linyphiidae and Pimoidae of America north of Mexico: Checklist, synonymy, and literature. In: Paquin, P. &amp; Buckle, D. J. (Eds.), Contributions a la connaissance des Araignees (Araneae) d'Amerique du Nord. Fabreries, 10 (Supplement), 89 - 191." type="journal article">
Buckle
<emphasis id="B91BC43FFF97FF94FD42FF7684F3396A" box="[681,732,253,275]" italics="true" pageId="65" pageNumber="66">et al.</emphasis>
(2001
</bibRefCitation>
: 130), based on type material examination.
</paragraph>
<paragraph id="8BD0182DFF97FF94FF7CFE9484D5394B" blockId="65.[151,1436,222,306]" box="[151,762,284,306]" pageId="65" pageNumber="66">
<taxonomicName id="4C6F63AEFF97FF94FF7CFE9487BD394B" baseAuthorityName="Emerton" baseAuthorityYear="1917" box="[151,402,284,306]" class="Arachnida" family="Linyphiidae" genus="Porrhomma" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="macrochelis">
<emphasis id="B91BC43FFF97FF94FF7CFE9487BD394B" box="[151,402,284,306]" italics="true" pageId="65" pageNumber="66">Porrhomma macrochelis</emphasis>
</taxonomicName>
<bibRefCitation id="EFFE65DCFF97FF94FE40FE948497394B" box="[427,696,284,306]" pageId="65" pageNumber="66" refId="ref39455" refString="Chamberlin, R. V. &amp; Ivie, W. (1947) The spiders of Alaska. Bulletin of the University of Utah, 37 (10), 1 - 103." type="journal article">Chamberlin &amp; Ivie (1947)</bibRefCitation>
: p. 61.
</paragraph>
</subSubSection>
<subSubSection id="C3754BA6FF97FF94FF7CFED6846039C6" pageId="65" pageNumber="66" type="materials_examined">
<paragraph id="8BD0182DFF97FF94FF7CFED6846039C6" blockId="65.[151,1437,350,951]" pageId="65" pageNumber="66">
<materialsCitation id="3B071270FF97FF94FF7CFED687E939E2" ID-GBIF-Occurrence="1915524191" collectingDate="1945-06-16" collectorName="J. C. Chamberlin" latitude="63.7" location="So. Rapids on Richardson Highway" longLatPrecision="1012" longitude="-145.83333" municipality="Material" pageId="65" pageNumber="66" specimenCount="1" specimenCount-female="1" stateProvince="ALASKA">
<emphasis id="B91BC43FFF97FF94FF7CFED687AF390E" bold="true" box="[151,384,350,375]" pageId="65" pageNumber="66">
<collectingMunicipality id="6BB48257FF97FF94FF7CFED686D0390E" box="[151,255,350,375]" pageId="65" pageNumber="66">Material</collectingMunicipality>
examined.
</emphasis>
<collectingRegion id="49ABD6CFFF97FF94FE6DFED787D4390E" box="[390,507,351,375]" country="United States of America" name="Alaska" pageId="65" pageNumber="66">ALASKA</collectingRegion>
,
<quantity id="4C97B5C8FF97FF94FDEEFED68415390E" box="[517,570,350,375]" metricMagnitude="3" metricUnit="m" metricValue="8.04672" pageId="65" pageNumber="66" unit="mi" value="5.0">5 mi</quantity>
.
<location id="8EB04EF6FF97FF94FDAFFED785FB390E" LSID="urn:lsid:plazi:treatment:03C6A93BFF97FF94FF7CFF1F831A3BCE:8EB04EF6FF97FF94FDAFFED785FB390E" box="[580,980,350,375]" latitude="63.7" longLatPrecision="1012" longitude="-145.83333" municipality="Material" name="So. Rapids on Richardson Highway" pageId="65" pageNumber="66" stateProvince="ALASKA">So. Rapids on Richardson Highway</location>
,
<geoCoordinate id="EE5B7EEAFF97FF94FC35FED68212390E" box="[990,1085,350,375]" direction="north" orientation="latitude" pageId="65" pageNumber="66" precision="925" value="63.7">63°42'N</geoCoordinate>
,
<geoCoordinate id="EE5B7EEAFF97FF94FBA3FED68297390E" box="[1096,1208,350,375]" direction="west" orientation="longitude" pageId="65" pageNumber="66" precision="925" value="-145.83333">145°50'W</geoCoordinate>
,
<collectingDate id="EF95C705FF97FF94FB28FED7834E390E" box="[1219,1377,350,375]" pageId="65" pageNumber="66" value="1945-06-16">
<date id="FFD13EEDFF97FF94FB28FED7834E390E" box="[1219,1377,350,375]" pageId="65" pageNumber="66" value="1945-06-16">June 16, 1945</date>
</collectingDate>
,
<specimenCount id="9D69D3A4FF97FF94FA87FED783BA390F" box="[1388,1429,351,375]" pageId="65" pageNumber="66" type="female">1 ♀</specimenCount>
,
<collectorName id="269A7DFBFF97FF94FF7CFE0B877E39E2" box="[151,337,386,411]" pageId="65" pageNumber="66">J.C. Chamberlin</collectorName>
coll., det
</materialsCitation>
.
<materialsCitation id="3B071270FF97FF94FE3EFE0A846339C6" ID-GBIF-Occurrence="1915524176" collectionCode="AMNH" collectorName="J. C. Chamberlin" county="Wilton Ivie" determinerName="Wilton Ivie" location="August - October" municipality="Matanuska" pageId="65" pageNumber="66" specimenCount="1" specimenCount-female="1" stateProvince="ALASKA">
<collectingCounty id="62B160A1FF97FF94FE3EFE0A847739E2" box="[469,600,386,411]" pageId="65" pageNumber="66">Wilton Ivie</collectingCounty>
1946;
<collectingMunicipality id="6BB48257FF97FF94FD45FE0A850339E2" box="[686,812,386,411]" pageId="65" pageNumber="66">Matanuska</collectingMunicipality>
, 61°N, 149°W,
<location id="8EB04EF6FF97FF94FC03FE0A828C39E2" LSID="urn:lsid:plazi:treatment:03C6A93BFF97FF94FF7CFF1F831A3BCE:8EB04EF6FF97FF94FC03FE0A828C39E2" box="[1000,1187,386,411]" county="Wilton Ivie" municipality="Matanuska" name="August - October" pageId="65" pageNumber="66" stateProvince="ALASKA">AugustOctober</location>
, 1943,
<specimenCount id="9D69D3A4FF97FF94FB17FE0B830539E3" box="[1276,1322,387,411]" pageId="65" pageNumber="66" type="female">1 ♀</specimenCount>
, leg.
<collectorName id="269A7DFBFF97FF94FA9AFE0B873139C6" pageId="65" pageNumber="66">J.C. Chamberlin</collectorName>
, det.
<determinerName id="7E0CF4E9FF97FF94FEB2FE2E87F639C6" box="[345,473,422,447]" pageId="65" pageNumber="66">Wilton Ivie</determinerName>
(
<collectionCode id="ED7E80E8FF97FF94FE0CFE2F846C39C6" box="[487,579,423,447]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34925" name="American Museum of Natural History" pageId="65" pageNumber="66">AMNH</collectionCode>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C3754BA6FF97FF94FF2CFE42831A3BCE" pageId="65" pageNumber="66" type="discussion">
<paragraph id="8BD0182DFF97FF94FF2CFE4284F33AEE" blockId="65.[151,1437,350,951]" pageId="65" pageNumber="66">
<emphasis id="B91BC43FFF97FF94FF2CFE428760399A" bold="true" box="[199,335,458,483]" pageId="65" pageNumber="66">Comments.</emphasis>
In the original description, the male of
<taxonomicName id="4C6F63AEFF97FF94FCE0FE428203399A" authorityName="Emerton" authorityYear="1917" box="[779,1068,458,483]" class="Arachnida" family="Linyphiidae" genus="Gongylidium" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="macrochelis">
<emphasis id="B91BC43FFF97FF94FCE0FE428203399A" box="[779,1068,458,483]" italics="true" pageId="65" pageNumber="66">Gongylidium macrochelis</emphasis>
</taxonomicName>
is characterised by a dull orange cephalothorax, large and thick chelicerae with a large tooth on the front, by scattered elevations at the base of the hairs on the front side of chelicerae, by a paracymbium with a round tooth turned toward the tibia (
<bibRefCitation id="EFFE65DCFF97FF94FB01FD9B83BF3A52" box="[1258,1424,531,555]" pageId="65" pageNumber="66" refId="ref39921" refString="Emerton, J. H. (1917) New spiders from Canada and the adjoining states. The Canadian Entomologist, 49, 261 - 272. https: // doi. org / 10.4039 / Ent 49261 - 8" type="journal article">Emerton 1917</bibRefCitation>
). According to these characteristics, the species is not
<taxonomicName id="4C6F63AEFF97FF94FD05FDBE855A3A36" authorityName="Simon" authorityYear="1884" box="[750,885,566,591]" class="Arachnida" family="Linyphiidae" genus="Porrhomma" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="genus">
<emphasis id="B91BC43FFF97FF94FD05FDBE855A3A36" box="[750,885,566,591]" italics="true" pageId="65" pageNumber="66">Porrhomma</emphasis>
</taxonomicName>
.
<bibRefCitation id="EFFE65DCFF97FF94FC6FFDBE82383A36" box="[900,1047,566,591]" pageId="65" pageNumber="66" refId="ref40559" refString="Holm, A. (1960) On a collection of spiders from Alaska. Zoologiska Bidrag fran Uppsala, 33, 109 - 134." type="journal article">Holm (1960)</bibRefCitation>
noted: “
<taxonomicName id="4C6F63AEFF97FF94FB91FDBE86D73A0B" authority="Emerton" authorityName="Emerton" authorityYear="1917" class="Arachnida" family="Linyphiidae" genus="Gongylidium" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="macrochelis">
<emphasis id="B91BC43FFF97FF94FB91FDBE83B33A36" box="[1146,1436,566,591]" italics="true" pageId="65" pageNumber="66">Gongylidium macrochelis</emphasis>
Emerton
</taxonomicName>
is most probably a synonym of
<taxonomicName id="4C6F63AEFF97FF94FD9FFDD482B43A0A" authority="(O. Pickard-Cambridge)" authorityName="O. Pickard-Cambridge" baseAuthorityName="O. Pickard-Cambridge" baseAuthorityYear="1875" box="[628,1179,602,627]" class="Arachnida" family="Linyphiidae" genus="Macrargus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="multesimus">
<emphasis id="B91BC43FFF97FF94FD9FFDD485573A0A" box="[628,888,602,627]" italics="true" pageId="65" pageNumber="66">Macrargus multesimus</emphasis>
(O. Pickard-Cambridge)
</taxonomicName>
.”
<bibRefCitation id="EFFE65DCFF97FF94FB58FDD283B33A0A" box="[1203,1436,602,627]" pageId="65" pageNumber="66" refId="ref39197" refString="Buckle, D. J., Carroll, D., Crawford, R. L. &amp; Roth, V. D. (2001) Linyphiidae and Pimoidae of America north of Mexico: Checklist, synonymy, and literature. In: Paquin, P. &amp; Buckle, D. J. (Eds.), Contributions a la connaissance des Araignees (Araneae) d'Amerique du Nord. Fabreries, 10 (Supplement), 89 - 191." type="journal article">
Buckle
<emphasis id="B91BC43FFF97FF94FAE7FDD483673A0A" box="[1292,1352,602,627]" italics="true" pageId="65" pageNumber="66">et al.</emphasis>
(2001)
</bibRefCitation>
revised
<typeStatus id="54D4A68FFF97FF94FF04FDF787303AEE" box="[239,287,639,663]" pageId="65" pageNumber="66">type</typeStatus>
material and confirmed this synonymy.
</paragraph>
<paragraph id="8BD0182DFF97FF94FF2CFD2A84273B5E" blockId="65.[151,1437,350,951]" pageId="65" pageNumber="66">
<bibRefCitation id="EFFE65DCFF97FF94FF2CFD2A87C03AC2" box="[199,495,674,699]" pageId="65" pageNumber="66" refId="ref39455" refString="Chamberlin, R. V. &amp; Ivie, W. (1947) The spiders of Alaska. Bulletin of the University of Utah, 37 (10), 1 - 103." type="journal article">Chamberlin &amp; Ivie (1947)</bibRefCitation>
transferred
<taxonomicName id="4C6F63AEFF97FF94FD93FD2B85303AC2" authorityName="Emerton" authorityYear="1917" box="[632,799,674,699]" class="Arachnida" family="Linyphiidae" genus="Gongylidium" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="macrochelis">
<emphasis id="B91BC43FFF97FF94FD93FD2B85303AC2" box="[632,799,674,699]" italics="true" pageId="65" pageNumber="66">G. macrochelis</emphasis>
</taxonomicName>
to the genus
<taxonomicName id="4C6F63AEFF97FF94FC53FD2A82103AC2" authorityName="Simon" authorityYear="1884" box="[952,1087,674,699]" class="Arachnida" family="Linyphiidae" genus="Porrhomma" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="genus">
<emphasis id="B91BC43FFF97FF94FC53FD2A82103AC2" box="[952,1087,674,699]" italics="true" pageId="65" pageNumber="66">Porrhomma</emphasis>
</taxonomicName>
and also mentioned the record of females: “63°N, 145°W,
<quantity id="4C97B5C8FF97FF94FE38FD4E84243AA6" box="[467,523,710,735]" metricMagnitude="3" metricUnit="m" metricValue="8.04672" pageId="65" pageNumber="66" unit="mi" value="5.0">5 mi</quantity>
. So. Rapids on Richardson Highway,
<date id="FFD13EEDFF97FF94FC56FD4F824F3AA6" box="[957,1120,710,735]" pageId="65" pageNumber="66" value="1945-06-16">June 16, 1945</date>
, ♀, J.C. Chamberlin. 61°N, 149°W, Matanuska,
<date id="FFD13EEDFF97FF94FE94FD6284563B7A" box="[383,633,746,771]" pageId="65" pageNumber="66" value="1943-08" valueMax="1943-10-31" valueMin="1943-08-00">AugustOctober 1943</date>
(♀) and
<date id="FFD13EEDFF97FF94FD0EFD6285E53B7A" box="[741,970,746,771]" pageId="65" pageNumber="66" value="1944-09-23">September 23, 1944</date>
(Ƌ ♀), J.C. Chamberlin.” The female is neither described nor depictured.
</paragraph>
<paragraph id="8BD0182DFF97FF94FF2CFCBB831A3BCE" blockId="65.[151,1437,350,951]" pageId="65" pageNumber="66">
I examined two female samples mentioned by
<bibRefCitation id="EFFE65DCFF97FF94FD25FCBA85DA3B32" box="[718,1013,818,843]" pageId="65" pageNumber="66" refId="ref39455" refString="Chamberlin, R. V. &amp; Ivie, W. (1947) The spiders of Alaska. Bulletin of the University of Utah, 37 (10), 1 - 103." type="journal article">Chamberlin &amp; Ivie (1947)</bibRefCitation>
. These females can not be assigned to the genus
<taxonomicName id="4C6F63AEFF97FF94FEE7FCDE87BC3B16" authorityName="Simon" authorityYear="1884" box="[268,403,854,879]" class="Arachnida" family="Linyphiidae" genus="Porrhomma" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="genus">
<emphasis id="B91BC43FFF97FF94FEE7FCDE87BC3B16" box="[268,403,854,879]" italics="true" pageId="65" pageNumber="66">Porrhomma</emphasis>
</taxonomicName>
, the epigynum lacks the typical pit. These females also can not be assigned to
<taxonomicName id="4C6F63AEFF97FF94FACBFCDF873A3BEA" baseAuthorityName="O. Pickard-Cambridge" baseAuthorityYear="1875" class="Arachnida" family="Linyphiidae" genus="Macrargus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="multesimus">
<emphasis id="B91BC43FFF97FF94FACBFCDF873A3BEA" italics="true" pageId="65" pageNumber="66">Macrargus multesimus</emphasis>
</taxonomicName>
, the epigynum lacks the typical scapus described by
<bibRefCitation id="EFFE65DCFF97FF94FC97FCF382FF3BEA" box="[892,1232,890,915]" pageId="65" pageNumber="66" refId="ref42422" refString="Pickard-Cambridge, O. (1875) On some new species of Erigone from North America. Proceedings of the Zoological Society of London, 1875, 393 - 405." type="journal article">O. Pickard-Cambridge (1875)</bibRefCitation>
or by
<bibRefCitation id="EFFE65DCFF97FF94FACBFCF2877D3BCE" pageId="65" pageNumber="66" refId="ref40282" refString="Gnelitsa, V. A. &amp; Koponen, S. (2010) A new species of the genus Macrargus (Araneae, Linyphiidae, Micronetinae) from the north-east of Ukraine and redescription of two related species. Vestnik Zoologii, 44, 291 - 299. https: // doi. org / 10.2478 / v 10058 - 010 - 0019 - 5" type="journal article">Gnelitsa &amp; Koponen (2010)</bibRefCitation>
. Designation of these females as
<taxonomicName id="4C6F63AEFF97FF94FD2DFC1685F33BCE" baseAuthorityName="Emerton" baseAuthorityYear="1917" box="[710,988,926,951]" class="Arachnida" family="Linyphiidae" genus="Porrhomma" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="65" pageNumber="66" phylum="Arthropoda" rank="species" species="macrochelis">
<emphasis id="B91BC43FFF97FF94FD2DFC1685F33BCE" box="[710,988,926,951]" italics="true" pageId="65" pageNumber="66">Porrhomma macrochelis</emphasis>
</taxonomicName>
represents a misidentification.
</paragraph>
</subSubSection>
</treatment>
</document>