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<document ID-DOI="http://doi.org/10.5281/zenodo.4762539" ID-GBIF-Dataset="dd6866c0-c326-4347-8419-b2e688a89062" ID-GBIF-Taxon="182073448" ID-ISSN="1854-0392" ID-Zenodo-Dep="4762539" checkinTime="1620963812069" checkinUser="felipe" docAuthor="Stewart, Kenneth W. &amp; Kondratieff, Boris C." docDate="2012" docId="C250BC3DFFBCFF9FFE86385AFAEF43F5" docLanguage="en" docName="Illiesia.8.3.16-36.pdf" docOrigin="Illiesia 8 (3)" docStyle="DocumentStyle:3ED4ECBC8873166DC296BE619562C54F.3:Illiesia.2009-.journal_article" docStyleId="3ED4ECBC8873166DC296BE619562C54F" docStyleName="Illiesia.2009-.journal_article" docStyleVersion="3" docTitle="Megarcys signata" docType="treatment" docVersion="7" lastPageNumber="20" masterDocId="3E69C445FFB8FF9BFFA93B67FFC2460D" masterDocTitle="Larvae Of The Nearctic Species Of The Stonefly Genus Megarcys Klapálek (Plecoptera: Perlodidae)" masterLastPageNumber="36" masterPageNumber="16" pageId="4" pageNumber="20" updateTime="1636470019915" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Larvae Of The Nearctic Species Of The Stonefly Genus Megarcys Klapálek (Plecoptera: Perlodidae)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Stewart, Kenneth W.</mods:namePart>
<mods:affiliation>Department of Biological Sciences, P. O. Box 305220, University of North Texas, Denton, Texas, U. S. A. 76203 E-mail: stewart @ unt. edu</mods:affiliation>
<mods:nameIdentifier type="email">stewart@unt.edu</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Kondratieff, Boris C.</mods:namePart>
<mods:affiliation>Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, Colorado, U. S. A. 80523 E-mail: Boris. Kondratieff @ Colostate. edu</mods:affiliation>
<mods:nameIdentifier type="email">Boris.Kondratieff@Colostate.edu</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>Illiesia</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2012</mods:date>
<mods:detail type="volume">
<mods:number>8</mods:number>
</mods:detail>
<mods:detail type="issue">
<mods:number>3</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>16</mods:start>
<mods:end>36</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://doi.org/10.5281/zenodo.4760667</mods:identifier>
<mods:identifier type="GBIF-Dataset">dd6866c0-c326-4347-8419-b2e688a89062</mods:identifier>
<mods:identifier type="ISSN">1854-0392</mods:identifier>
<mods:identifier type="Zenodo-Dep">4760667</mods:identifier>
</mods:mods>
<treatment ID-DOI="http://doi.org/10.5281/zenodo.4762539" ID-GBIF-Taxon="182073448" ID-Zenodo-Dep="4762539" LSID="urn:lsid:plazi:treatment:C250BC3DFFBCFF9FFE86385AFAEF43F5" httpUri="http://treatment.plazi.org/id/C250BC3DFFBCFF9FFE86385AFAEF43F5" lastPageNumber="20" pageId="4" pageNumber="20">
<subSubSection box="[303,684,829,853]" pageId="4" pageNumber="20" type="nomenclature">
<paragraph blockId="4.[303,684,829,853]" box="[303,684,829,853]" pageId="4" pageNumber="20">
<heading bold="true" box="[303,684,829,853]" centered="true" fontSize="10" level="2" pageId="4" pageNumber="20" reason="2">
<taxonomicName authority="(Hagen 1874)" baseAuthorityName="Hagen" baseAuthorityYear="1874" box="[303,684,829,853]" class="Insecta" family="Perlodidae" genus="Megarcys" kingdom="Animalia" order="Plecoptera" pageId="4" pageNumber="20" phylum="Arthropoda" rank="species" species="signata">
<emphasis bold="true" box="[303,684,829,853]" pageId="4" pageNumber="20">
<emphasis bold="true" box="[303,512,829,853]" italics="true" pageId="4" pageNumber="20">Megarcys signata</emphasis>
(
<bibRefCitation author="Hagen, H. A." box="[533,676,829,853]" pageId="4" pageNumber="20" pagination="571 - 606" refId="ref7860" refString="Hagen, H. A. 1874. Report of the Pseudo-Neuroptera and Neuroptera collected by Lieut. W. L. Carpenter in 1873 in Colorado. In Hayden. Annual Report on the United States Geological and Geological Survey of the Territories, embracing Colorado, being a report of progress of the explorations for the year 1873. Pp: 571 - 606." type="journal article" year="1874">Hagen 1874</bibRefCitation>
)
</emphasis>
</taxonomicName>
</heading>
</paragraph>
</subSubSection>
<subSubSection pageId="4" pageNumber="20" type="description">
<paragraph blockId="4.[228,757,865,924]" pageId="4" pageNumber="20">
(
<figureCitation box="[236,349,865,889]" captionStart-0="Fig" captionStart-1="Figs" captionStartId-0="2.[189,230,1681,1705]" captionStartId-1="5.[189,241,1823,1847]" captionTargetBox-0="[328,1308,244,1604]" captionTargetBox-1="[249,1383,270,1769]" captionTargetId-0="figure-46@2.[325,1308,229,1639]" captionTargetId-1="figure-102@5.[249,1383,250,1769]" captionTargetPageId-0="2" captionTargetPageId-1="5" captionText-0="Fig. 2. Megarcys signata habitus, South Fork, American River, Utah (Stewart &amp; Stark 2002, Fig. 14.35)." captionText-1="Figs. 3-11. Megarcys signata larval characters. 3. Head-pronotum. 4. Left lacinia, ventral. 5. Left mandible, ventral. 6. Right front leg, dorsal. 7. Mesosternum. 8. Gill arrangement, ventral. 9. Male abdomen, ventral. 10. Female abdomen, ventral. 11. Basal-mid-apical cercomeres, dorsal. (Stewart &amp; Stark 2002, Figs. 14.36 a-i)." figureDoi-0="http://doi.org/10.5281/zenodo.4760671" figureDoi-1="http://doi.org/10.5281/zenodo.4760673" httpUri-0="https://zenodo.org/record/4760671/files/figure.png" httpUri-1="https://zenodo.org/record/4760673/files/figure.png" pageId="4" pageNumber="20">Figs. 2-11</figureCitation>
,
<figureCitation box="[362,391,865,889]" captionStart="Figs" captionStartId="6.[189,241,1326,1350]" captionTargetBox="[325,1308,269,1250]" captionTargetId="figure-46@6.[325,1308,269,1250]" captionTargetPageId="6" captionText="Figs. 12-17. Megarcys larval head-pronotal pattern. 12. M. irregularis, White River, Washington. 13. M. signata, Mosquito Creek, Colorado. 14. M. subtruncata, Ohanopecosh River, Washington. 15. M. subtruncata, Butte Creek, California. 16. M. subtruncata, Quinn Spring, Oregon. 17. M. watertoni, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760675" httpUri="https://zenodo.org/record/4760675/files/figure.png" pageId="4" pageNumber="20">13</figureCitation>
,
<figureCitation box="[402,471,865,889]" captionStart="Figs" captionStartId="7.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1234]" captionTargetId="figure-46@7.[325,1308,250,1234]" captionTargetPageId="7" captionText="Figs. 18-23. Megarcys larval characters. 18. M. signata, thorax, lateral, Mosquito Creek, Colorado. 19. M. signata, abdomen, lateral, Mosquito Creek, Colorado 20. M. subtruncata, thorax-abdomen, lateral, Quinn Spring, Oregon. 21. M. signata, right lacinia, ventral, Mosquito Creek, Colorado. 22. M. subtruncata, right lacinia, ventral, Ohanapecosh River, Washington. 23. M. watertoni, right lacinia, ventral, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760677" httpUri="https://zenodo.org/record/4760677/files/figure.png" pageId="4" pageNumber="20">18, 19</figureCitation>
,
<figureCitation box="[482,511,865,889]" captionStart="Figs" captionStartId="8.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1237]" captionTargetId="figure-46@8.[325,1308,250,1237]" captionTargetPageId="8" captionText="Figs. 24-29. Megarcys wingpads. 24. M. irregularis male, White River, Washington. 25. M. signata male, Mosquito Creek, Colorado. 26. M. subtruncata, Ohanopecosh River, Washington. 27. M. subtruncata, Butte Creek, California. 28. M. subtruncata, Quinn Spring, Oregon. 29. M. watertoni, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760679" httpUri="https://zenodo.org/record/4760679/files/figure.png" pageId="4" pageNumber="20">25</figureCitation>
,
<figureCitation box="[522,551,865,889]" captionStart="Figs" captionStartId="9.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1235]" captionTargetId="figure-46@9.[325,1308,250,1235]" captionTargetPageId="9" captionText="Figs. 30-35. Megarcys larval legs. 30. M. irregularis, left rear, White River, Washington. 31. M. signata, left rear, Mosquito Creek, Colorado. 32. M. subtruncata, right rear, Ohanopecosh River, Washington. 33. M. subtruncata, right rear, Butte Creek, California. 34. M. subtruncata, left rear, Quinn Spring, Oregon. 35. M. watertoni, right rear, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760683" httpUri="https://zenodo.org/record/4760683/files/figure.png" pageId="4" pageNumber="20">31</figureCitation>
,
<figureCitation box="[563,592,865,889]" captionStart="Figs" captionStartId="10.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1231]" captionTargetId="figure-46@10.[325,1308,250,1231]" captionTargetPageId="10" captionText="Figs. 36-41. Megarcys larval thoracic sterna. 36. M. irregularis, pro-and metasterna, White River, Washington. 37. M. signata, mesosternum, Mosquito Creek, Colorado. 38. M. subtruncata, meso- and metasterna, Ohanopecosh River, Washington. 39. M. subtruncata, meso- and metasterna, Butte Creek, California. 40. M. subtruncata, mesosternum, Quinn Spring, Oregon. 41. M. watertoni, mesosternum, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760685" httpUri="https://zenodo.org/record/4760685/files/figure.png" pageId="4" pageNumber="20">37</figureCitation>
,
<figureCitation box="[603,632,865,889]" captionStart="Figs" captionStartId="11.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1231]" captionTargetId="figure-46@11.[325,1308,250,1231]" captionTargetPageId="11" captionText="Figs. 42-47. Megarcys dorsal larval abdomen. 42. M. irregularis male, White River, Washington. 43. M. signata male, Mosquito Creek, Colorado. 44. M. subtruncata female, Ohanopecosh River, Washington. 45. M. subtruncata female, Butte Creek, California. 46. M. subtruncata male, Quinn Spring, Oregon. 47. M. watertoni female, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760687" httpUri="https://zenodo.org/record/4760687/files/figure.png" pageId="4" pageNumber="20">43</figureCitation>
,
<figureCitation box="[643,672,865,889]" captionStart="Figs" captionStartId="12.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1234]" captionTargetId="figure-46@12.[325,1308,250,1234]" captionTargetPageId="12" captionText="Figs. 48-53. Megarcys ventral larval abdomen, 48. M. irregularis male, White River, Washington. 49. M. irregularis female, White River, Washington. 50. M. signata female, Mosquito Creek, Colorado. 51. M. subtruncata female, Butte Creek, California. 52. M. subtruncata female, Ohanopecosh River, Washington. 53. M. watertoni female, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760689" httpUri="https://zenodo.org/record/4760689/files/figure.png" pageId="4" pageNumber="20">50</figureCitation>
,
<figureCitation box="[683,712,865,889]" captionStart="Figs" captionStartId="14.[189,241,1610,1634]" captionTargetBox="[351,1258,216,1562]" captionTargetId="figure-176@14.[351,1258,215,1542]" captionTargetPageId="14" captionText="Figs. 60-69. Megarcys larval characters. 60. M. irregularis gills, male, Nisqually River, Washington. 61. M. signata gills, male, Mosquito Creek, Colorado. (SM = submental gill, ASc = anterior supracoxal gill, AT2 = anterior mesothoracic gill, AT3 = anterior metathoracic gill). 62. M. subtruncata male gills, Butte Creek, California. 63. M. subtruncata submentum and gills, male, Quinn Spring, Oregon. 64. M. subtruncata submentum and gills, female, Quinn Spring, Oregon. 65. M. watertoni gills, male, Iceberg Creek, Montana. 66. M. watertoni submental gill, male, Bear Creek/confl. Flathead River, Montana. 67. M. watertoni anterior supracoxal gill, male, Bear Creek/confl. Flathead River, Montana. 68. M. watertoni anterior supracoxal gill, female, Bear Creek/confluence Flathead River, Montana. 69. M. yosemite gills, male, Cold Creek, California. Scale lines = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.4760695" httpUri="https://zenodo.org/record/4760695/files/figure.png" pageId="4" pageNumber="20">61</figureCitation>
,
<figureCitation box="[723,752,865,889]" captionStart="Figs" captionStartId="15.[189,241,1539,1563]" captionTargetBox="[400,1231,250,1461]" captionTargetId="figure-46@15.[400,1231,250,1430]" captionTargetPageId="15" captionText="Figs. 70-74. Megarcys larval characters. 70. M. irregularis developing male genitalia, dorsal, Nisqually River, Washington 71. M. signata developing male genitalia, Mosquito Creek, Colorado. 72. M. subtruncata developing male genitalia, dorsal, Butte Creek, California. 73. M. watertoni developing male genitalia, dorsal, Iceberg Creek, Montana. 74. M. yosemite developing male genitalia, dorsal, Cold Water Creek, California. Scale line= 2mm." figureDoi="http://doi.org/10.5281/zenodo.4760697" httpUri="https://zenodo.org/record/4760697/files/figure.png" pageId="4" pageNumber="20">71</figureCitation>
,
<figureCitation box="[384,413,900,924]" captionStart="Figs" captionStartId="16.[189,241,1468,1492]" captionTargetBox="[325,1308,230,1404]" captionTargetId="figure-215@16.[325,1308,230,1404]" captionTargetPageId="16" captionText="Figs. 75-83. Megarcys larval characters. 75. M. watertoni wingpads, male, Iceberg Creek, Montana. 76. M. watertoni wingpads, male, Bear Creek confl. Flathead River, Montana. 77. M. watertoni female wingpads, Iceberg Creek, Mt. 78. M. yosemite wingpads, male Cold Creek, California. 79. M. irregularis developing male genitalia, oblique view, Nisqually River, Washington. 80. M. signata developing male genitalia, lateral, Mosquito Creek, Colorado. 81. M. subtruncata developing male genitalia, oblique view, Butte Creek, California. 82. M. watertoni developing male genitalia, oblique view, Iceberg Creek, Montana. 83. M. yosemite developing male genitalia, oblique view, Cold Water Creek, California. Scale line = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.4760699" httpUri="https://zenodo.org/record/4760699/files/figure.png" pageId="4" pageNumber="20">80</figureCitation>
,
<figureCitation box="[425,452,900,924]" captionStart="Figs" captionStartId="18.[189,241,1219,1243]" captionTargetBox="[362,1269,215,1170]" captionTargetId="figure-322@18.[362,1269,215,1166]" captionTargetPageId="18" captionText="Figs. 84-88. Megarcys larval characters. 84a. M. irregularis larval female 8th sternum, Nisqually River, Washington. 84b. M. irregularis, larval female 8th sternum, same specimen, 2X. 85a. M. signata larval female 8th sternum, Mosquito Creek, Colorado. 85b. M. signata larval female 8th sternum, Pine Creek, Montana. 86. M. subtruncata larval female 8th sternum, Butte Creek, California. 87. M. watertoni larval female 8th sternum, Iceberg Creek, Montana. 88a. M. yosemite larval female 8th sternum, Cold Water Creek, California. 88b. M. yosemite, larval female 8th sternum same specimen, 2X. Scale line = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.4760701" httpUri="https://zenodo.org/record/4760701/files/figure.png" pageId="4" pageNumber="20">85</figureCitation>
a-b,
<tableCitation box="[508,591,900,924]" captionStart="Table 1" captionStartId="3.[189,259,296,320]" captionTargetBox="[272,1358,446,1573]" captionText="Table 1. Individual or range measurements (mm) and cercal segment numbers" httpUri="http://table.plazi.org/id/1E865DA3FFBBFF98FF143A4FFC9F476E" pageId="4" pageNumber="20" tableUuid="1E865DA3FFBBFF98FF143A4FFC9F476E">Table 1</tableCitation>
)
</paragraph>
</subSubSection>
<paragraph blockId="4.[189,798,971,1920]" pageId="4" pageNumber="20">
<subSubSection pageId="4" pageNumber="20" type="distribution">
<emphasis bold="true" box="[189,348,971,995]" pageId="4" pageNumber="20">Distribution.</emphasis>
Rocky Mountains, New Mexico-
<collectingRegion box="[189,281,1008,1032]" country="United States of America" name="Nevada" pageId="4" pageNumber="20">Nevada</collectingRegion>
northward to British Columbia and
<collectingRegion box="[709,793,1008,1032]" country="United States of America" name="Alaska" pageId="4" pageNumber="20">Alaska</collectingRegion>
.
</subSubSection>
<subSubSection pageId="4" pageNumber="20" type="materials_examined">
<emphasis bold="true" box="[189,429,1043,1067]" pageId="4" pageNumber="20">Material examined.</emphasis>
<materialsCitation ID-GBIF-Occurrence="3111474307" pageId="4" pageNumber="20">
<collectingRegion box="[439,553,1043,1067]" country="United States of America" name="Colorado" pageId="4" pageNumber="20">Colorado</collectingRegion>
: Boulder Co., South Boulder Creek,
<quantity box="[370,447,1079,1103]" metricMagnitude="3" metricUnit="m" metricValue="3.2" pageId="4" pageNumber="20" unit="km" value="3.2">3.2 km</quantity>
west of Tolland,
<date box="[644,766,1079,1103]" pageId="4" pageNumber="20" value="1991-07-07">7-VII-1991</date>
, B. Kondratieff, R. Durfee,
<specimenCount box="[463,510,1115,1139]" pageId="4" pageNumber="20" type="male">11♂</specimenCount>
(both macropterous and brachypterous),
<specimenCount box="[381,415,1150,1174]" pageId="4" pageNumber="20" type="female">6♀</specimenCount>
,
<specimenCount box="[428,475,1150,1174]" pageId="4" pageNumber="20" type="female">11♀</specimenCount>
larvae,
<specimenCount box="[567,600,1150,1174]" pageId="4" pageNumber="20" type="male">2♂</specimenCount>
exuviae;
</materialsCitation>
<materialsCitation ID-GBIF-Occurrence="3111474319" pageId="4" pageNumber="20">
Middle St. Vrain Creek, FR 14 west of Peaceful Valley,
<date pageId="4" pageNumber="20" value="1993-07-17">17- VII-1993</date>
, B. Kondratieff, B. Painter,
<specimenCount box="[625,659,1221,1245]" pageId="4" pageNumber="20" type="male">1♂</specimenCount>
,
<specimenCount box="[675,709,1221,1245]" pageId="4" pageNumber="20" type="female">2♀</specimenCount>
larvae;
</materialsCitation>
<materialsCitation ID-GBIF-Occurrence="3111474318" pageId="4" pageNumber="20">
Gunnison Co., Mosquito Creek/confluence Quartz Creek,
<collectingRegion box="[271,382,1292,1316]" country="United States of America" name="Colorado" pageId="4" pageNumber="20">Colorado</collectingRegion>
Rd. 76 north of Pitkin,
<date box="[641,763,1292,1316]" pageId="4" pageNumber="20" value="2008-07-09">9-VII-2008</date>
, K. Stewart, reared series:
</materialsCitation>
<materialsCitation ID-GBIF-Occurrence="3111474303" pageId="4" pageNumber="20">
2 reared
<specimenCount box="[580,600,1328,1351]" pageId="4" pageNumber="20" type="male">♂</specimenCount>
with exuviae, 1 reared
<specimenCount box="[281,301,1364,1387]" pageId="4" pageNumber="20" type="female">♀</specimenCount>
with exuvium,
<specimenCount box="[513,547,1363,1387]" pageId="4" pageNumber="20" type="male">8♂</specimenCount>
larvae,
<specimenCount box="[656,703,1363,1387]" pageId="4" pageNumber="20" type="female">14♀</specimenCount>
larvae;
</materialsCitation>
<materialsCitation ID-GBIF-Occurrence="3111474317" pageId="4" pageNumber="20">
Larimer Co., outlet stream of Chasm Lake, Rocky Mountain National Park, El.
<quantity box="[532,612,1434,1458]" metricMagnitude="3" metricUnit="m" metricValue="3.536" pageId="4" pageNumber="20" unit="m" value="3536.0">3536m</quantity>
,
<date box="[623,762,1434,1458]" pageId="4" pageNumber="20" value="1994-07-16">16-VII-1994</date>
, B. Kondratieff, R. Durfee, 2 brachypterous
<specimenCount box="[655,675,1470,1493]" pageId="4" pageNumber="20" type="male">♂</specimenCount>
larvae,
<specimenCount box="[764,797,1470,1494]" pageId="4" pageNumber="20" type="female">1♀</specimenCount>
brachypterous larva.
<collectingRegion box="[436,545,1506,1529]" country="United States of America" name="Montana" pageId="4" pageNumber="20">Montana</collectingRegion>
:
</materialsCitation>
<materialsCitation ID-GBIF-Occurrence="3111474321" pageId="4" pageNumber="20">
Gallatin Co.,
<quantity box="[706,797,1505,1529]" metricMagnitude="3" metricUnit="m" metricValue="5.63" pageId="4" pageNumber="20" unit="km" value="5.63">5.63 km</quantity>
off Trail Creek Rd.,
<date box="[417,531,1541,1565]" pageId="4" pageNumber="20" value="1987-06-10">10-6-1987</date>
, B. Kondratieff,
<specimenCount box="[718,752,1541,1565]" pageId="4" pageNumber="20" type="male">2♂</specimenCount>
,
<specimenCount box="[764,797,1541,1565]" pageId="4" pageNumber="20" type="male">2♂</specimenCount>
larvae,
<specimenCount box="[273,307,1576,1600]" pageId="4" pageNumber="20" type="female">3♀</specimenCount>
larvae,
<specimenCount box="[396,429,1576,1600]" pageId="4" pageNumber="20" type="male">3♂</specimenCount>
exuviae,
<specimenCount box="[537,571,1576,1600]" pageId="4" pageNumber="20" type="female">2♀</specimenCount>
exuviae.
<collectingRegion box="[676,794,1576,1600]" country="United States of America" name="Wyoming" pageId="4" pageNumber="20">Wyoming</collectingRegion>
:
</materialsCitation>
<materialsCitation ID-GBIF-Occurrence="3111474335" pageId="4" pageNumber="20">
Teton Co., Granite Creek, Granite Falls,
<date box="[645,766,1612,1636]" pageId="4" pageNumber="20" value="2001-07-08">8-VII-2001</date>
, B. VanWieren,
<specimenCount box="[337,370,1648,1672]" pageId="4" pageNumber="20" type="female">1♀</specimenCount>
,
<specimenCount box="[384,417,1648,1672]" pageId="4" pageNumber="20" type="female">2♀</specimenCount>
larvae. Yukon Territory:
</materialsCitation>
<materialsCitation ID-GBIF-Occurrence="3111474326" pageId="4" pageNumber="20">
<collectingRegion box="[716,797,1647,1671]" country="United States of America" name="Alaska" pageId="4" pageNumber="20">Alaska</collectingRegion>
Hwy., stream crossing between Watson Lake and Whitehorse,
<date box="[338,422,1719,1743]" pageId="4" pageNumber="20" value="1997-05">V-1997</date>
, P. Niblett,
<specimenCount box="[555,589,1719,1743]" pageId="4" pageNumber="20" type="male">4♂</specimenCount>
larvae,
<specimenCount box="[679,713,1719,1743]" pageId="4" pageNumber="20" type="female">3♀</specimenCount>
larvae.
</materialsCitation>
</subSubSection>
</paragraph>
<subSubSection pageId="4" pageNumber="20" type="description">
<paragraph blockId="4.[189,798,971,1920]" lastBlockId="4.[835,1444,224,1528]" pageId="4" pageNumber="20">
<emphasis bold="true" box="[189,325,1754,1778]" pageId="4" pageNumber="20">Characters.</emphasis>
Head capsule width
<specimenCount box="[584,604,1754,1777]" pageId="4" pageNumber="20" type="male">♂</specimenCount>
<quantity box="[612,764,1754,1778]" metricMagnitude="-3" metricUnit="m" metricValue="3.36" metricValueMax="3.48" metricValueMin="3.24" pageId="4" pageNumber="20" unit="mm" value="3.36" valueMax="3.48" valueMin="3.24">3.24-3.48mm</quantity>
,
<specimenCount box="[777,797,1754,1777]" pageId="4" pageNumber="20" type="female">♀</specimenCount>
<quantity box="[189,342,1790,1814]" metricMagnitude="-3" metricUnit="m" metricValue="4.17" metricValueMax="4.2" metricValueMin="4.14" pageId="4" pageNumber="20" unit="mm" value="4.17" valueMax="4.2" valueMin="4.14">4.14-4.20mm</quantity>
; pronotal width
<specimenCount box="[533,553,1790,1813]" pageId="4" pageNumber="20" type="male">♂</specimenCount>
<quantity box="[558,710,1790,1814]" metricMagnitude="-3" metricUnit="m" metricValue="2.7" metricValueMax="2.76" metricValueMin="2.64" pageId="4" pageNumber="20" unit="mm" value="2.7" valueMax="2.76" valueMin="2.64">2.64-2.76mm</quantity>
,
<specimenCount box="[719,739,1790,1813]" pageId="4" pageNumber="20" type="female">♀</specimenCount>
3.36- 3.90mm; body length
<specimenCount box="[458,478,1826,1849]" pageId="4" pageNumber="20" type="male">♂</specimenCount>
<quantity box="[489,641,1825,1849]" metricMagnitude="-2" metricUnit="m" metricValue="1.735" metricValueMax="1.85" metricValueMin="1.6199999999999999" pageId="4" pageNumber="20" unit="mm" value="17.35" valueMax="18.5" valueMin="16.2">16.2-18.5mm</quantity>
,
<specimenCount box="[657,677,1826,1849]" pageId="4" pageNumber="20" type="female">♀</specimenCount>
<quantity box="[688,798,1825,1849]" metricMagnitude="-2" metricUnit="m" metricValue="2.55" metricValueMax="2.6" metricValueMin="2.5" pageId="4" pageNumber="20" unit="mm" value="25.5" valueMax="26.0" valueMin="25.0">25-26mm</quantity>
(
<tableCitation box="[197,283,1861,1885]" captionStart="Table 1" captionStartId="3.[189,259,296,320]" captionTargetBox="[272,1358,446,1573]" captionText="Table 1. Individual or range measurements (mm) and cercal segment numbers" httpUri="http://table.plazi.org/id/1E865DA3FFBBFF98FF143A4FFC9F476E" pageId="4" pageNumber="20" tableUuid="1E865DA3FFBBFF98FF143A4FFC9F476E">Table 1</tableCitation>
). Color and pigmentation (
<figureCitation box="[605,683,1861,1885]" captionStart="Fig" captionStartId="2.[189,230,1681,1705]" captionTargetBox="[328,1308,244,1604]" captionTargetId="figure-46@2.[325,1308,229,1639]" captionTargetPageId="2" captionText="Fig. 2. Megarcys signata habitus, South Fork, American River, Utah (Stewart &amp; Stark 2002, Fig. 14.35)." figureDoi="http://doi.org/10.5281/zenodo.4760671" httpUri="https://zenodo.org/record/4760671/files/figure.png" pageId="4" pageNumber="20">Figs. 2</figureCitation>
,
<figureCitation box="[695,710,1861,1885]" captionStart="Figs" captionStartId="5.[189,241,1823,1847]" captionTargetBox="[249,1383,270,1769]" captionTargetId="figure-102@5.[249,1383,250,1769]" captionTargetPageId="5" captionText="Figs. 3-11. Megarcys signata larval characters. 3. Head-pronotum. 4. Left lacinia, ventral. 5. Left mandible, ventral. 6. Right front leg, dorsal. 7. Mesosternum. 8. Gill arrangement, ventral. 9. Male abdomen, ventral. 10. Female abdomen, ventral. 11. Basal-mid-apical cercomeres, dorsal. (Stewart &amp; Stark 2002, Figs. 14.36 a-i)." figureDoi="http://doi.org/10.5281/zenodo.4760673" httpUri="https://zenodo.org/record/4760673/files/figure.png" pageId="4" pageNumber="20">3</figureCitation>
,
<figureCitation box="[722,751,1861,1885]" captionStart="Figs" captionStartId="6.[189,241,1326,1350]" captionTargetBox="[325,1308,269,1250]" captionTargetId="figure-46@6.[325,1308,269,1250]" captionTargetPageId="6" captionText="Figs. 12-17. Megarcys larval head-pronotal pattern. 12. M. irregularis, White River, Washington. 13. M. signata, Mosquito Creek, Colorado. 14. M. subtruncata, Ohanopecosh River, Washington. 15. M. subtruncata, Butte Creek, California. 16. M. subtruncata, Quinn Spring, Oregon. 17. M. watertoni, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760675" httpUri="https://zenodo.org/record/4760675/files/figure.png" pageId="4" pageNumber="20">13</figureCitation>
,
<figureCitation box="[763,792,1861,1885]" captionStart="Figs" captionStartId="7.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1234]" captionTargetId="figure-46@7.[325,1308,250,1234]" captionTargetPageId="7" captionText="Figs. 18-23. Megarcys larval characters. 18. M. signata, thorax, lateral, Mosquito Creek, Colorado. 19. M. signata, abdomen, lateral, Mosquito Creek, Colorado 20. M. subtruncata, thorax-abdomen, lateral, Quinn Spring, Oregon. 21. M. signata, right lacinia, ventral, Mosquito Creek, Colorado. 22. M. subtruncata, right lacinia, ventral, Ohanapecosh River, Washington. 23. M. watertoni, right lacinia, ventral, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760677" httpUri="https://zenodo.org/record/4760677/files/figure.png" pageId="4" pageNumber="20">19</figureCitation>
,
<figureCitation box="[189,218,1896,1920]" captionStart="Figs" captionStartId="8.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1237]" captionTargetId="figure-46@8.[325,1308,250,1237]" captionTargetPageId="8" captionText="Figs. 24-29. Megarcys wingpads. 24. M. irregularis male, White River, Washington. 25. M. signata male, Mosquito Creek, Colorado. 26. M. subtruncata, Ohanopecosh River, Washington. 27. M. subtruncata, Butte Creek, California. 28. M. subtruncata, Quinn Spring, Oregon. 29. M. watertoni, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760679" httpUri="https://zenodo.org/record/4760679/files/figure.png" pageId="4" pageNumber="20">25</figureCitation>
,
<figureCitation box="[230,259,1896,1920]" captionStart="Figs" captionStartId="11.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1231]" captionTargetId="figure-46@11.[325,1308,250,1231]" captionTargetPageId="11" captionText="Figs. 42-47. Megarcys dorsal larval abdomen. 42. M. irregularis male, White River, Washington. 43. M. signata male, Mosquito Creek, Colorado. 44. M. subtruncata female, Ohanopecosh River, Washington. 45. M. subtruncata female, Butte Creek, California. 46. M. subtruncata male, Quinn Spring, Oregon. 47. M. watertoni female, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760687" httpUri="https://zenodo.org/record/4760687/files/figure.png" pageId="4" pageNumber="20">43</figureCitation>
,
<figureCitation box="[270,300,1896,1920]" captionStart="Figs" captionStartId="12.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1234]" captionTargetId="figure-46@12.[325,1308,250,1234]" captionTargetPageId="12" captionText="Figs. 48-53. Megarcys ventral larval abdomen, 48. M. irregularis male, White River, Washington. 49. M. irregularis female, White River, Washington. 50. M. signata female, Mosquito Creek, Colorado. 51. M. subtruncata female, Butte Creek, California. 52. M. subtruncata female, Ohanopecosh River, Washington. 53. M. watertoni female, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760689" httpUri="https://zenodo.org/record/4760689/files/figure.png" pageId="4" pageNumber="20">50</figureCitation>
), lacinia (
<figureCitation box="[412,492,1896,1920]" captionStart="Figs" captionStartId="7.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1234]" captionTargetId="figure-46@7.[325,1308,250,1234]" captionTargetPageId="7" captionText="Figs. 18-23. Megarcys larval characters. 18. M. signata, thorax, lateral, Mosquito Creek, Colorado. 19. M. signata, abdomen, lateral, Mosquito Creek, Colorado 20. M. subtruncata, thorax-abdomen, lateral, Quinn Spring, Oregon. 21. M. signata, right lacinia, ventral, Mosquito Creek, Colorado. 22. M. subtruncata, right lacinia, ventral, Ohanapecosh River, Washington. 23. M. watertoni, right lacinia, ventral, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760677" httpUri="https://zenodo.org/record/4760677/files/figure.png" pageId="4" pageNumber="20">Fig. 21</figureCitation>
), and dorsomesal band of erect silky white hairs (
<figureCitation box="[1110,1239,224,249]" captionStart="Figs" captionStartId="7.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1234]" captionTargetId="figure-46@7.[325,1308,250,1234]" captionTargetPageId="7" captionText="Figs. 18-23. Megarcys larval characters. 18. M. signata, thorax, lateral, Mosquito Creek, Colorado. 19. M. signata, abdomen, lateral, Mosquito Creek, Colorado 20. M. subtruncata, thorax-abdomen, lateral, Quinn Spring, Oregon. 21. M. signata, right lacinia, ventral, Mosquito Creek, Colorado. 22. M. subtruncata, right lacinia, ventral, Ohanapecosh River, Washington. 23. M. watertoni, right lacinia, ventral, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760677" httpUri="https://zenodo.org/record/4760677/files/figure.png" pageId="4" pageNumber="20">Figs. 18, 19</figureCitation>
) typical of genus and as described by
<bibRefCitation author="Stewart, K. W. &amp; B. P. Stark" box="[1090,1359,260,284]" pageId="4" pageNumber="20" refId="ref8350" refString="Stewart, K. W. &amp; B. P. Stark. 1988. Nymphs of North American stonefly genera (Plecoptera). Thomas Say Foundation Series, Entomological Society of America, 12: 460 pp." type="book" year="1988">Stewart &amp; Stark (1988</bibRefCitation>
,
<bibRefCitation author="Stewart, K. W. &amp; B. P. Stark" box="[1373,1431,260,284]" pageId="4" pageNumber="20" refId="ref8390" refString="Stewart, K. W. &amp; B. P. Stark. 2002. Nymphs of North American stonefly genera (Plecoptera), 2 nd Ed. The Caddis Press, Columbus, Ohio. 510 pp." type="book" year="2002">2002</bibRefCitation>
). Wingpads of
<specimenCount box="[993,1013,296,319]" pageId="4" pageNumber="20" type="male">♂</specimenCount>
and
<specimenCount box="[1072,1092,296,319]" pageId="4" pageNumber="20" type="female">♀</specimenCount>
(
<figureCitation box="[1106,1184,295,320]" captionStart="Fig" captionStartId="2.[189,230,1681,1705]" captionTargetBox="[328,1308,244,1604]" captionTargetId="figure-46@2.[325,1308,229,1639]" captionTargetPageId="2" captionText="Fig. 2. Megarcys signata habitus, South Fork, American River, Utah (Stewart &amp; Stark 2002, Fig. 14.35)." figureDoi="http://doi.org/10.5281/zenodo.4760671" httpUri="https://zenodo.org/record/4760671/files/figure.png" pageId="4" pageNumber="20">Figs. 2</figureCitation>
,
<figureCitation box="[1196,1224,295,319]" captionStart="Figs" captionStartId="8.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1237]" captionTargetId="figure-46@8.[325,1308,250,1237]" captionTargetPageId="8" captionText="Figs. 24-29. Megarcys wingpads. 24. M. irregularis male, White River, Washington. 25. M. signata male, Mosquito Creek, Colorado. 26. M. subtruncata, Ohanopecosh River, Washington. 27. M. subtruncata, Butte Creek, California. 28. M. subtruncata, Quinn Spring, Oregon. 29. M. watertoni, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760679" httpUri="https://zenodo.org/record/4760679/files/figure.png" pageId="4" pageNumber="20">25</figureCitation>
) macropterous (or brachypterous in high elevation streams). Gill number and arrangement typical of genus (
<figureCitation box="[1348,1430,366,390]" captionStart="Figs" captionStartId="14.[189,241,1610,1634]" captionTargetBox="[351,1258,216,1562]" captionTargetId="figure-176@14.[351,1258,215,1542]" captionTargetPageId="14" captionText="Figs. 60-69. Megarcys larval characters. 60. M. irregularis gills, male, Nisqually River, Washington. 61. M. signata gills, male, Mosquito Creek, Colorado. (SM = submental gill, ASc = anterior supracoxal gill, AT2 = anterior mesothoracic gill, AT3 = anterior metathoracic gill). 62. M. subtruncata male gills, Butte Creek, California. 63. M. subtruncata submentum and gills, male, Quinn Spring, Oregon. 64. M. subtruncata submentum and gills, female, Quinn Spring, Oregon. 65. M. watertoni gills, male, Iceberg Creek, Montana. 66. M. watertoni submental gill, male, Bear Creek/confl. Flathead River, Montana. 67. M. watertoni anterior supracoxal gill, male, Bear Creek/confl. Flathead River, Montana. 68. M. watertoni anterior supracoxal gill, female, Bear Creek/confluence Flathead River, Montana. 69. M. yosemite gills, male, Cold Creek, California. Scale lines = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.4760695" httpUri="https://zenodo.org/record/4760695/files/figure.png" pageId="4" pageNumber="20">Fig. 61</figureCitation>
). Submental gill length
<specimenCount box="[1133,1153,403,426]" pageId="4" pageNumber="20" type="male">♂</specimenCount>
<quantity box="[1172,1325,402,426]" metricMagnitude="-4" metricUnit="m" metricValue="4.2" metricValueMax="4.8" metricValueMin="3.5999999999999996" pageId="4" pageNumber="20" unit="mm" value="0.42" valueMax="0.48" valueMin="0.36">0.36-0.48mm</quantity>
,
<specimenCount box="[1348,1368,403,426]" pageId="4" pageNumber="20" type="female">♀</specimenCount>
0.54- 0.60mm; anterior supracoxal gill length
<specimenCount box="[1351,1371,438,461]" pageId="4" pageNumber="20" type="male">♂</specimenCount>
0.36- 0.42mm,
<specimenCount box="[942,962,474,497]" pageId="4" pageNumber="20" type="female">♀</specimenCount>
0.45-0.0.60mm (shorter in high elevation Chasm Lake outlet stream in Rocky Mountain National Park) (
<tableCitation box="[1036,1129,544,568]" captionStart="Table 1" captionStartId="3.[189,259,296,320]" captionTargetBox="[272,1358,446,1573]" captionText="Table 1. Individual or range measurements (mm) and cercal segment numbers" httpUri="http://table.plazi.org/id/1E865DA3FFBBFF98FF143A4FFC9F476E" pageId="4" pageNumber="20" tableUuid="1E865DA3FFBBFF98FF143A4FFC9F476E">Table 1</tableCitation>
). Legs (
<figureCitation box="[1236,1320,544,568]" captionStart="Figs" captionStartId="5.[189,241,1823,1847]" captionTargetBox="[249,1383,270,1769]" captionTargetId="figure-102@5.[249,1383,250,1769]" captionTargetPageId="5" captionText="Figs. 3-11. Megarcys signata larval characters. 3. Head-pronotum. 4. Left lacinia, ventral. 5. Left mandible, ventral. 6. Right front leg, dorsal. 7. Mesosternum. 8. Gill arrangement, ventral. 9. Male abdomen, ventral. 10. Female abdomen, ventral. 11. Basal-mid-apical cercomeres, dorsal. (Stewart &amp; Stark 2002, Figs. 14.36 a-i)." figureDoi="http://doi.org/10.5281/zenodo.4760673" httpUri="https://zenodo.org/record/4760673/files/figure.png" pageId="4" pageNumber="20">Figs. 6</figureCitation>
,
<figureCitation box="[1339,1366,544,568]" captionStart="Figs" captionStartId="9.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1235]" captionTargetId="figure-46@9.[325,1308,250,1235]" captionTargetPageId="9" captionText="Figs. 30-35. Megarcys larval legs. 30. M. irregularis, left rear, White River, Washington. 31. M. signata, left rear, Mosquito Creek, Colorado. 32. M. subtruncata, right rear, Ohanopecosh River, Washington. 33. M. subtruncata, right rear, Butte Creek, California. 34. M. subtruncata, left rear, Quinn Spring, Oregon. 35. M. watertoni, right rear, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760683" httpUri="https://zenodo.org/record/4760683/files/figure.png" pageId="4" pageNumber="20">31</figureCitation>
) with setation typical of genus as described by
<bibRefCitation author="Stewart, K. W. &amp; B. P. Stark" pageId="4" pageNumber="20" refId="ref8390" refString="Stewart, K. W. &amp; B. P. Stark. 2002. Nymphs of North American stonefly genera (Plecoptera), 2 nd Ed. The Caddis Press, Columbus, Ohio. 510 pp." type="book" year="2002">Stewart &amp; Stark (2002)</bibRefCitation>
.Y-arms of mesosternum meet anterior corners of furcal pits (
<figureCitation box="[1089,1192,651,675]" captionStart="Figs" captionStartId="5.[189,241,1823,1847]" captionTargetBox="[249,1383,270,1769]" captionTargetId="figure-102@5.[249,1383,250,1769]" captionTargetPageId="5" captionText="Figs. 3-11. Megarcys signata larval characters. 3. Head-pronotum. 4. Left lacinia, ventral. 5. Left mandible, ventral. 6. Right front leg, dorsal. 7. Mesosternum. 8. Gill arrangement, ventral. 9. Male abdomen, ventral. 10. Female abdomen, ventral. 11. Basal-mid-apical cercomeres, dorsal. (Stewart &amp; Stark 2002, Figs. 14.36 a-i)." figureDoi="http://doi.org/10.5281/zenodo.4760673" httpUri="https://zenodo.org/record/4760673/files/figure.png" pageId="4" pageNumber="20">Figs. 7, 8</figureCitation>
,
<figureCitation box="[1203,1233,651,675]" captionStart="Figs" captionStartId="10.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1231]" captionTargetId="figure-46@10.[325,1308,250,1231]" captionTargetPageId="10" captionText="Figs. 36-41. Megarcys larval thoracic sterna. 36. M. irregularis, pro-and metasterna, White River, Washington. 37. M. signata, mesosternum, Mosquito Creek, Colorado. 38. M. subtruncata, meso- and metasterna, Ohanopecosh River, Washington. 39. M. subtruncata, meso- and metasterna, Butte Creek, California. 40. M. subtruncata, mesosternum, Quinn Spring, Oregon. 41. M. watertoni, mesosternum, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760685" httpUri="https://zenodo.org/record/4760685/files/figure.png" pageId="4" pageNumber="20">37</figureCitation>
), typical of genus. Cercal segments
<specimenCount box="[1047,1067,687,710]" pageId="4" pageNumber="20" type="male">♂</specimenCount>
26 (
<tableCitation box="[1128,1219,686,710]" captionStart="Table 1" captionStartId="3.[189,259,296,320]" captionTargetBox="[272,1358,446,1573]" captionText="Table 1. Individual or range measurements (mm) and cercal segment numbers" httpUri="http://table.plazi.org/id/1E865DA3FFBBFF98FF143A4FFC9F476E" pageId="4" pageNumber="20" tableUuid="1E865DA3FFBBFF98FF143A4FFC9F476E">Table 1</tableCitation>
), as described by
<bibRefCitation author="Stewart, K. W. &amp; B. P. Stark" box="[835,1110,722,746]" pageId="4" pageNumber="20" refId="ref8390" refString="Stewart, K. W. &amp; B. P. Stark. 2002. Nymphs of North American stonefly genera (Plecoptera), 2 nd Ed. The Caddis Press, Columbus, Ohio. 510 pp." type="book" year="2002">Stewart &amp; Stark (2002)</bibRefCitation>
with apical whorl of short setae on cercomeres and dorsal fringe of silky white hairs (
<figureCitation box="[908,988,793,817]" captionStart="Figs" captionStartId="5.[189,241,1823,1847]" captionTargetBox="[249,1383,270,1769]" captionTargetId="figure-102@5.[249,1383,250,1769]" captionTargetPageId="5" captionText="Figs. 3-11. Megarcys signata larval characters. 3. Head-pronotum. 4. Left lacinia, ventral. 5. Left mandible, ventral. 6. Right front leg, dorsal. 7. Mesosternum. 8. Gill arrangement, ventral. 9. Male abdomen, ventral. 10. Female abdomen, ventral. 11. Basal-mid-apical cercomeres, dorsal. (Stewart &amp; Stark 2002, Figs. 14.36 a-i)." figureDoi="http://doi.org/10.5281/zenodo.4760673" httpUri="https://zenodo.org/record/4760673/files/figure.png" pageId="4" pageNumber="20">Fig. 11</figureCitation>
). Developing membranous, windsocklike posterior process of male epiproct (
<figureCitation box="[1362,1434,828,852]" captionStart="Figs" captionStartId="15.[189,241,1539,1563]" captionTargetBox="[400,1231,250,1461]" captionTargetId="figure-46@15.[400,1231,250,1430]" captionTargetPageId="15" captionText="Figs. 70-74. Megarcys larval characters. 70. M. irregularis developing male genitalia, dorsal, Nisqually River, Washington 71. M. signata developing male genitalia, Mosquito Creek, Colorado. 72. M. subtruncata developing male genitalia, dorsal, Butte Creek, California. 73. M. watertoni developing male genitalia, dorsal, Iceberg Creek, Montana. 74. M. yosemite developing male genitalia, dorsal, Cold Water Creek, California. Scale line= 2mm." figureDoi="http://doi.org/10.5281/zenodo.4760697" httpUri="https://zenodo.org/record/4760697/files/figure.png" pageId="4" pageNumber="20">Fig.71</figureCitation>
) evident in late instar individuals, and pointed posteroventrally in lateral view (
<figureCitation box="[1213,1292,899,924]" captionStart="Figs" captionStartId="16.[189,241,1468,1492]" captionTargetBox="[325,1308,230,1404]" captionTargetId="figure-215@16.[325,1308,230,1404]" captionTargetPageId="16" captionText="Figs. 75-83. Megarcys larval characters. 75. M. watertoni wingpads, male, Iceberg Creek, Montana. 76. M. watertoni wingpads, male, Bear Creek confl. Flathead River, Montana. 77. M. watertoni female wingpads, Iceberg Creek, Mt. 78. M. yosemite wingpads, male Cold Creek, California. 79. M. irregularis developing male genitalia, oblique view, Nisqually River, Washington. 80. M. signata developing male genitalia, lateral, Mosquito Creek, Colorado. 81. M. subtruncata developing male genitalia, oblique view, Butte Creek, California. 82. M. watertoni developing male genitalia, oblique view, Iceberg Creek, Montana. 83. M. yosemite developing male genitalia, oblique view, Cold Water Creek, California. Scale line = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.4760699" httpUri="https://zenodo.org/record/4760699/files/figure.png" pageId="4" pageNumber="20">Fig. 80</figureCitation>
). Developing female subgenital plate of 8
<superScript attach="left" box="[1165,1180,934,948]" fontSize="6" pageId="4" pageNumber="20">th</superScript>
sternum (
<figureCitation box="[1302,1395,935,959]" captionStart="Figs" captionStartId="12.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1234]" captionTargetId="figure-46@12.[325,1308,250,1234]" captionTargetPageId="12" captionText="Figs. 48-53. Megarcys ventral larval abdomen, 48. M. irregularis male, White River, Washington. 49. M. irregularis female, White River, Washington. 50. M. signata female, Mosquito Creek, Colorado. 51. M. subtruncata female, Butte Creek, California. 52. M. subtruncata female, Ohanopecosh River, Washington. 53. M. watertoni female, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760689" httpUri="https://zenodo.org/record/4760689/files/figure.png" pageId="4" pageNumber="20">Figs. 50</figureCitation>
,
<figureCitation box="[1407,1435,935,959]" captionStart="Figs" captionStartId="18.[189,241,1219,1243]" captionTargetBox="[362,1269,215,1170]" captionTargetId="figure-322@18.[362,1269,215,1166]" captionTargetPageId="18" captionText="Figs. 84-88. Megarcys larval characters. 84a. M. irregularis larval female 8th sternum, Nisqually River, Washington. 84b. M. irregularis, larval female 8th sternum, same specimen, 2X. 85a. M. signata larval female 8th sternum, Mosquito Creek, Colorado. 85b. M. signata larval female 8th sternum, Pine Creek, Montana. 86. M. subtruncata larval female 8th sternum, Butte Creek, California. 87. M. watertoni larval female 8th sternum, Iceberg Creek, Montana. 88a. M. yosemite larval female 8th sternum, Cold Water Creek, California. 88b. M. yosemite, larval female 8th sternum same specimen, 2X. Scale line = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.4760701" httpUri="https://zenodo.org/record/4760701/files/figure.png" pageId="4" pageNumber="20">85</figureCitation>
) shallowly notched mesally.
</paragraph>
</subSubSection>
<subSubSection pageId="4" pageNumber="20" type="discussion">
<paragraph blockId="4.[835,1444,224,1528]" pageId="4" pageNumber="20">
<emphasis bold="true" box="[835,974,1006,1030]" pageId="4" pageNumber="20">Comments.</emphasis>
The generic characters proposed by
<bibRefCitation author="Stewart, K. W. &amp; B. P. Stark" box="[835,1090,1042,1066]" pageId="4" pageNumber="20" refId="ref8350" refString="Stewart, K. W. &amp; B. P. Stark. 1988. Nymphs of North American stonefly genera (Plecoptera). Thomas Say Foundation Series, Entomological Society of America, 12: 460 pp." type="book" year="1988">Stewart &amp; Stark (1988</bibRefCitation>
,
<bibRefCitation author="Stewart, K. W. &amp; B. P. Stark" box="[1100,1155,1042,1066]" pageId="4" pageNumber="20" refId="ref8390" refString="Stewart, K. W. &amp; B. P. Stark. 2002. Nymphs of North American stonefly genera (Plecoptera), 2 nd Ed. The Caddis Press, Columbus, Ohio. 510 pp." type="book" year="2002">2002</bibRefCitation>
) were further confirmed in these additional larvae examined. Color and pigmentation (
<figureCitation box="[1007,1084,1113,1137]" captionStart="Fig" captionStartId="2.[189,230,1681,1705]" captionTargetBox="[328,1308,244,1604]" captionTargetId="figure-46@2.[325,1308,229,1639]" captionTargetPageId="2" captionText="Fig. 2. Megarcys signata habitus, South Fork, American River, Utah (Stewart &amp; Stark 2002, Fig. 14.35)." figureDoi="http://doi.org/10.5281/zenodo.4760671" httpUri="https://zenodo.org/record/4760671/files/figure.png" pageId="4" pageNumber="20">Figs. 2</figureCitation>
,
<figureCitation box="[1094,1109,1113,1137]" captionStart="Figs" captionStartId="5.[189,241,1823,1847]" captionTargetBox="[249,1383,270,1769]" captionTargetId="figure-102@5.[249,1383,250,1769]" captionTargetPageId="5" captionText="Figs. 3-11. Megarcys signata larval characters. 3. Head-pronotum. 4. Left lacinia, ventral. 5. Left mandible, ventral. 6. Right front leg, dorsal. 7. Mesosternum. 8. Gill arrangement, ventral. 9. Male abdomen, ventral. 10. Female abdomen, ventral. 11. Basal-mid-apical cercomeres, dorsal. (Stewart &amp; Stark 2002, Figs. 14.36 a-i)." figureDoi="http://doi.org/10.5281/zenodo.4760673" httpUri="https://zenodo.org/record/4760673/files/figure.png" pageId="4" pageNumber="20">3</figureCitation>
,
<figureCitation box="[1120,1149,1113,1137]" captionStart="Figs" captionStartId="6.[189,241,1326,1350]" captionTargetBox="[325,1308,269,1250]" captionTargetId="figure-46@6.[325,1308,269,1250]" captionTargetPageId="6" captionText="Figs. 12-17. Megarcys larval head-pronotal pattern. 12. M. irregularis, White River, Washington. 13. M. signata, Mosquito Creek, Colorado. 14. M. subtruncata, Ohanopecosh River, Washington. 15. M. subtruncata, Butte Creek, California. 16. M. subtruncata, Quinn Spring, Oregon. 17. M. watertoni, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760675" httpUri="https://zenodo.org/record/4760675/files/figure.png" pageId="4" pageNumber="20">13</figureCitation>
,
<figureCitation box="[1159,1188,1113,1137]" captionStart="Figs" captionStartId="7.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1234]" captionTargetId="figure-46@7.[325,1308,250,1234]" captionTargetPageId="7" captionText="Figs. 18-23. Megarcys larval characters. 18. M. signata, thorax, lateral, Mosquito Creek, Colorado. 19. M. signata, abdomen, lateral, Mosquito Creek, Colorado 20. M. subtruncata, thorax-abdomen, lateral, Quinn Spring, Oregon. 21. M. signata, right lacinia, ventral, Mosquito Creek, Colorado. 22. M. subtruncata, right lacinia, ventral, Ohanapecosh River, Washington. 23. M. watertoni, right lacinia, ventral, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760677" httpUri="https://zenodo.org/record/4760677/files/figure.png" pageId="4" pageNumber="20">19</figureCitation>
,
<figureCitation box="[1198,1227,1113,1137]" captionStart="Figs" captionStartId="8.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1237]" captionTargetId="figure-46@8.[325,1308,250,1237]" captionTargetPageId="8" captionText="Figs. 24-29. Megarcys wingpads. 24. M. irregularis male, White River, Washington. 25. M. signata male, Mosquito Creek, Colorado. 26. M. subtruncata, Ohanopecosh River, Washington. 27. M. subtruncata, Butte Creek, California. 28. M. subtruncata, Quinn Spring, Oregon. 29. M. watertoni, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760679" httpUri="https://zenodo.org/record/4760679/files/figure.png" pageId="4" pageNumber="20">25</figureCitation>
,
<figureCitation box="[1237,1266,1113,1137]" captionStart="Figs" captionStartId="9.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1235]" captionTargetId="figure-46@9.[325,1308,250,1235]" captionTargetPageId="9" captionText="Figs. 30-35. Megarcys larval legs. 30. M. irregularis, left rear, White River, Washington. 31. M. signata, left rear, Mosquito Creek, Colorado. 32. M. subtruncata, right rear, Ohanopecosh River, Washington. 33. M. subtruncata, right rear, Butte Creek, California. 34. M. subtruncata, left rear, Quinn Spring, Oregon. 35. M. watertoni, right rear, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760683" httpUri="https://zenodo.org/record/4760683/files/figure.png" pageId="4" pageNumber="20">31</figureCitation>
,
<figureCitation box="[1276,1305,1113,1137]" captionStart="Figs" captionStartId="11.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1231]" captionTargetId="figure-46@11.[325,1308,250,1231]" captionTargetPageId="11" captionText="Figs. 42-47. Megarcys dorsal larval abdomen. 42. M. irregularis male, White River, Washington. 43. M. signata male, Mosquito Creek, Colorado. 44. M. subtruncata female, Ohanopecosh River, Washington. 45. M. subtruncata female, Butte Creek, California. 46. M. subtruncata male, Quinn Spring, Oregon. 47. M. watertoni female, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760687" httpUri="https://zenodo.org/record/4760687/files/figure.png" pageId="4" pageNumber="20">43</figureCitation>
,
<figureCitation box="[1314,1342,1113,1137]" captionStart="Figs" captionStartId="12.[189,241,1326,1350]" captionTargetBox="[325,1308,250,1234]" captionTargetId="figure-46@12.[325,1308,250,1234]" captionTargetPageId="12" captionText="Figs. 48-53. Megarcys ventral larval abdomen, 48. M. irregularis male, White River, Washington. 49. M. irregularis female, White River, Washington. 50. M. signata female, Mosquito Creek, Colorado. 51. M. subtruncata female, Butte Creek, California. 52. M. subtruncata female, Ohanopecosh River, Washington. 53. M. watertoni female, Iceberg Creek, Montana." figureDoi="http://doi.org/10.5281/zenodo.4760689" httpUri="https://zenodo.org/record/4760689/files/figure.png" pageId="4" pageNumber="20">50</figureCitation>
) were of a generic pattern that was similar in the other four species examined. The measured gill lengths, and shapes, were variable between left and right sides, individuals, and populations, therefore difficult to compare with the generalized terms “short” and “long” as used by
<bibRefCitation author="Teslenko, V. A." box="[1045,1227,1326,1350]" pageId="4" pageNumber="20" pagination="815 - 819" refId="ref8527" refString="Teslenko, V. A. 2009. Larvae of the Palearctic species of the stonefly genus Megarcys (Plecoptera, Perlodidae). Entomological Review, 89: 815 - 819." type="journal article" year="2009">Teslenko (2009)</bibRefCitation>
in her descriptions and keys to Palearctic species. Submental (SM) gills (
<figureCitation box="[843,919,1397,1421]" captionStart="Figs" captionStartId="5.[189,241,1823,1847]" captionTargetBox="[249,1383,270,1769]" captionTargetId="figure-102@5.[249,1383,250,1769]" captionTargetPageId="5" captionText="Figs. 3-11. Megarcys signata larval characters. 3. Head-pronotum. 4. Left lacinia, ventral. 5. Left mandible, ventral. 6. Right front leg, dorsal. 7. Mesosternum. 8. Gill arrangement, ventral. 9. Male abdomen, ventral. 10. Female abdomen, ventral. 11. Basal-mid-apical cercomeres, dorsal. (Stewart &amp; Stark 2002, Figs. 14.36 a-i)." figureDoi="http://doi.org/10.5281/zenodo.4760673" httpUri="https://zenodo.org/record/4760673/files/figure.png" pageId="4" pageNumber="20">Figs. 8</figureCitation>
,
<figureCitation box="[930,958,1397,1421]" captionStart="Figs" captionStartId="14.[189,241,1610,1634]" captionTargetBox="[351,1258,216,1562]" captionTargetId="figure-176@14.[351,1258,215,1542]" captionTargetPageId="14" captionText="Figs. 60-69. Megarcys larval characters. 60. M. irregularis gills, male, Nisqually River, Washington. 61. M. signata gills, male, Mosquito Creek, Colorado. (SM = submental gill, ASc = anterior supracoxal gill, AT2 = anterior mesothoracic gill, AT3 = anterior metathoracic gill). 62. M. subtruncata male gills, Butte Creek, California. 63. M. subtruncata submentum and gills, male, Quinn Spring, Oregon. 64. M. subtruncata submentum and gills, female, Quinn Spring, Oregon. 65. M. watertoni gills, male, Iceberg Creek, Montana. 66. M. watertoni submental gill, male, Bear Creek/confl. Flathead River, Montana. 67. M. watertoni anterior supracoxal gill, male, Bear Creek/confl. Flathead River, Montana. 68. M. watertoni anterior supracoxal gill, female, Bear Creek/confluence Flathead River, Montana. 69. M. yosemite gills, male, Cold Creek, California. Scale lines = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.4760695" httpUri="https://zenodo.org/record/4760695/files/figure.png" pageId="4" pageNumber="20">61</figureCitation>
) are not visible from dorsal view; anterior supracoxal (ASC) gills and anterior mesothoracic and anterior metathoracic (AT2, AT3) gills (
<figureCitation box="[1279,1356,1468,1492]" captionStart="Figs" captionStartId="5.[189,241,1823,1847]" captionTargetBox="[249,1383,270,1769]" captionTargetId="figure-102@5.[249,1383,250,1769]" captionTargetPageId="5" captionText="Figs. 3-11. Megarcys signata larval characters. 3. Head-pronotum. 4. Left lacinia, ventral. 5. Left mandible, ventral. 6. Right front leg, dorsal. 7. Mesosternum. 8. Gill arrangement, ventral. 9. Male abdomen, ventral. 10. Female abdomen, ventral. 11. Basal-mid-apical cercomeres, dorsal. (Stewart &amp; Stark 2002, Figs. 14.36 a-i)." figureDoi="http://doi.org/10.5281/zenodo.4760673" httpUri="https://zenodo.org/record/4760673/files/figure.png" pageId="4" pageNumber="20">Figs. 8</figureCitation>
,
<figureCitation box="[1366,1394,1468,1492]" captionStart="Figs" captionStartId="14.[189,241,1610,1634]" captionTargetBox="[351,1258,216,1562]" captionTargetId="figure-176@14.[351,1258,215,1542]" captionTargetPageId="14" captionText="Figs. 60-69. Megarcys larval characters. 60. M. irregularis gills, male, Nisqually River, Washington. 61. M. signata gills, male, Mosquito Creek, Colorado. (SM = submental gill, ASc = anterior supracoxal gill, AT2 = anterior mesothoracic gill, AT3 = anterior metathoracic gill). 62. M. subtruncata male gills, Butte Creek, California. 63. M. subtruncata submentum and gills, male, Quinn Spring, Oregon. 64. M. subtruncata submentum and gills, female, Quinn Spring, Oregon. 65. M. watertoni gills, male, Iceberg Creek, Montana. 66. M. watertoni submental gill, male, Bear Creek/confl. Flathead River, Montana. 67. M. watertoni anterior supracoxal gill, male, Bear Creek/confl. Flathead River, Montana. 68. M. watertoni anterior supracoxal gill, female, Bear Creek/confluence Flathead River, Montana. 69. M. yosemite gills, male, Cold Creek, California. Scale lines = 2 mm." figureDoi="http://doi.org/10.5281/zenodo.4760695" httpUri="https://zenodo.org/record/4760695/files/figure.png" pageId="4" pageNumber="20">61</figureCitation>
) are “long” and usually visible in dorsal view.
</paragraph>
</subSubSection>
</treatment>
</document>
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