432 lines
53 KiB
XML
432 lines
53 KiB
XML
<document id="A3A64FB849571A93D1615BC7AEF8A56B" ID-DOI="10.5281/zenodo.176194" ID-GBIF-Dataset="fd9b658b-c100-488b-96c0-f0278e54b0ed" ID-ISSN="1175-5326" ID-Zenodo-Dep="176194" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1459829059910" checkinUser="plazi" docAuthor="Cumberlidge, Neil" docDate="2007" docId="03D1879CFFBA786D198FFC81FDD6FDEF" docLanguage="en" docName="zt01447p062.pdf" docOrigin="Zootaxa 1447" docStyle="DocumentStyle:6581673A57F01A3145754A1E615EDFF0.4:Zootaxa.2007-2008.journal_article" docStyleId="6581673A57F01A3145754A1E615EDFF0" docStyleName="Zootaxa.2007-2008.journal_article" docStyleVersion="4" docTitle="Microthelphusa meansi Cumberlidge, 2007, new species" docType="treatment" docVersion="9" lastPageNumber="61" masterDocId="FFE8FFE4FFBB78681918FF8FFF98FF85" masterDocTitle="A new species of freshwater crab of the genus Microthelphusa (Brachyura: Pseudothelphusidae) from a remote isolated cloud forest on a tabletop mountain in western Guyana, South America" masterLastPageNumber="62" masterPageNumber="57" pageNumber="58" updateTime="1698222695041" updateUser="plazi">
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<mods:mods id="3671F850EA39618BD924C0C31C3172B6" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="4F217F495A0FFC305472F5D5DB1D8793">
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<mods:title id="3BC05053ED8B690B670C27ACB1F16BA9">A new species of freshwater crab of the genus Microthelphusa (Brachyura: Pseudothelphusidae) from a remote isolated cloud forest on a tabletop mountain in western Guyana, South America</mods:title>
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</mods:titleInfo>
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<mods:name id="E6847466E8CF88B07A80BF5AEC241559" type="personal">
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<mods:roleTerm id="43E965BDE0F7AC41B83432CD5BA44F46">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="0A2D7EEFD53943C7D15D8088FB8EA3DD">Cumberlidge, Neil</mods:namePart>
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<mods:typeOfResource id="41B17BFD9BF5B33F43B1002DD5CD2606">text</mods:typeOfResource>
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<mods:title id="43F1FEF4D832770E21E1303EAEA6A437">Zootaxa</mods:title>
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</mods:titleInfo>
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<mods:part id="69B3ECC28D32FB1CC155728B4829A6E5">
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<mods:date id="C80CC24E3429E0F249DE40EC7DD789F5">2007</mods:date>
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<mods:detail id="934E8A888ED756C8D029BFFCC1C54E83" type="volume">
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<mods:number id="7C50716D7D0A300122422C5A199C0B41">1447</mods:number>
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<mods:start id="5882F0F7E5E60CBAD6012EE05C238C3E">57</mods:start>
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<mods:classification id="F0AF6917EC4C27852D63D7A9C9032A4E">journal article</mods:classification>
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<mods:identifier id="1BD4A52F3DDDA466A4E06F02E305F48C" type="DOI">10.5281/zenodo.176194</mods:identifier>
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<mods:identifier id="432C106A085FB15EC57F0BD4639B7E19" type="GBIF-Dataset">fd9b658b-c100-488b-96c0-f0278e54b0ed</mods:identifier>
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<mods:identifier id="9FB0B719F8D38B45866FDA22F02367DE" type="ISSN">1175-5326</mods:identifier>
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<mods:identifier id="5173CB32D5E48C616BD95E2419A42FBB" type="Zenodo-Dep">176194</mods:identifier>
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<treatment id="03D1879CFFBA786D198FFC81FDD6FDEF" ID-DOI="http://doi.org/10.5281/zenodo.6237289" ID-GBIF-Taxon="119357476" ID-Zenodo-Dep="6237289" LSID="urn:lsid:plazi:treatment:03D1879CFFBA786D198FFC81FDD6FDEF" httpUri="http://treatment.plazi.org/id/03D1879CFFBA786D198FFC81FDD6FDEF" lastPageId="5" lastPageNumber="61" pageId="1" pageNumber="58">
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<subSubSection id="C3626501FFBA7869198FFC81FCBCFCAD" box="[151,804,782,808]" pageId="1" pageNumber="58" type="nomenclature">
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<paragraph id="8BC7368AFFBA7869198FFC81FCBCFCAD" blockId="1.[151,804,626,808]" box="[151,804,782,808]" pageId="1" pageNumber="58">
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<heading id="D08F81E6FFBA7869198FFC81FCBCFCAD" bold="true" box="[151,804,782,808]" fontSize="11" level="1" pageId="1" pageNumber="58" reason="1">
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<emphasis id="B90CEA98FFBA7869198FFC81FCBCFCAD" bold="true" box="[151,804,782,808]" pageId="1" pageNumber="58">
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<taxonomicName id="4C784D09FFBA7869198FFC81FE2CFCAD" ID-CoL="438FZ" box="[151,436,782,808]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="58" phylum="Arthropoda" rank="species" species="meansi" status="sp. nov.">
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<emphasis id="B90CEA98FFBA7869198FFC81FE2CFCAD" bold="true" box="[151,436,782,808]" italics="true" pageId="1" pageNumber="58">Microthelphusa meansi</emphasis>
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</taxonomicName>
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,
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||
<taxonomicNameLabel id="A23F57E3FFBA786918DBFC81FDCBFCAD" box="[451,595,782,808]" pageId="1" pageNumber="58" rank="species">new species</taxonomicNameLabel>
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(
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<figureCitation id="13432A0FFFBA78691B7BFC81FD4CFCAD" box="[611,724,782,808]" captionStart="FIGURES 1 – 8" captionStartId="2.[151,269,1877,1901]" captionTargetBox="[157,1412,189,1843]" captionTargetId="figure@2.[157,1429,163,1852]" captionTargetPageId="2" captionText="FIGURES 1 – 8. Microthelphusa meansi new species. Male holotype, cw 22.5 mm, from the Wokomung Massif, Guyana, USNM 1098372. 1, carapace, dorsal view; 2, cephalothorax, frontal view; 3, right cheliped, frontal view; 4, left cheliped, frontal view; 5, carpus and merus of right cheliped, dorsal view; 6, carpus and merus of right cheliped, inferior view; 7, left third maxilliped; 8, sternum. Scale = 3.2 mm (1, 2), 3.5 mm (3 – 8)." httpUri="https://zenodo.org/record/176195/files/figure.png" pageId="1" pageNumber="58">Figs. 1–8</figureCitation>
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,
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<figureCitation id="13432A0FFFBA78691BFAFC81FC84FCAD" box="[738,796,782,808]" captionStart="FIGURES 9 – 11" captionStartId="3.[151,270,1750,1774]" captionTargetBox="[262,1279,950,1749]" captionTargetId="figure@3.[239,1347,926,1761]" captionTargetPageId="3" captionText="FIGURES 9 – 11. Microthelphusa meansi new species. Male holotype, cw 22.5 mm, from the Wokomung Massif, Guyana, USNM 1098373, left first gonopod. 9, caudal view; 10, lateral view; 11, cephalic view. Scale = 3.0 mm." httpUri="https://zenodo.org/record/176196/files/figure.png" pageId="1" pageNumber="58">9–11</figureCitation>
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)
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</emphasis>
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</heading>
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</paragraph>
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||
</subSubSection>
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||
<subSubSection id="C3626501FFBA7869198FFCE5FA04FBA1" pageId="1" pageNumber="58" type="materials_examined">
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<paragraph id="8BC7368AFFBA7869198FFCE5FA04FBA1" blockId="1.[151,1437,874,2020]" pageId="1" pageNumber="58">
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<emphasis id="B90CEA98FFBA7869198FFCE5FE45FC01" bold="true" box="[151,477,874,900]" pageId="1" pageNumber="58">
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<typeStatus id="54C38828FFBA7869198FFCE5FF4CFC01" box="[151,212,874,900]" pageId="1" pageNumber="58">Type</typeStatus>
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material:
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<collectingCountry id="F36F761AFFBA7869184DFCE5FE40FC01" box="[341,472,874,900]" name="Guyana" pageId="1" pageNumber="58">GUYANA</collectingCountry>
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:
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</emphasis>
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Male
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<typeStatus id="54C38828FFBA78691B3EFCE5FD14FC01" box="[550,652,874,900]" pageId="1" pageNumber="58" type="holotype">holotype</typeStatus>
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(cw 22.5, cl 13.5, ch 7.5, fw 7.0 mm): collected near Middle Camp in deep humus on the floor of cloud forest on the Wokomung Massif, in Potaro-Siparuni Province, western
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<collectingCountry id="F36F761AFFBA7869198FFC35FF6AFC51" box="[151,242,954,980]" name="Guyana" pageId="1" pageNumber="58">Guyana</collectingCountry>
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||
(
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<geoCoordinate id="EE4C504DFFBA7869181FFC35FE2EFC51" box="[263,438,954,980]" direction="north" orientation="latitude" pageId="1" pageNumber="58" precision="1" value="5.110083">05°06'36.3'' N</geoCoordinate>
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,
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<geoCoordinate id="EE4C504DFFBA786918DFFC35FDE5FC51" box="[455,637,954,980]" direction="west" orientation="longitude" pageId="1" pageNumber="58" precision="1" value="-59.820583">59°49'14.1'' W</geoCoordinate>
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), altitude
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<quantity id="4C809B6FFFBA78691BE2FC35FCF8FC51" box="[762,864,954,980]" metricMagnitude="3" metricUnit="m" metricValue="1.135" pageId="1" pageNumber="58" unit="m" value="1135.0">1,135 m</quantity>
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asl (according to altimeter) or about
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<quantity id="4C809B6FFFBA78691C2FFC35FA04FC51" box="[1335,1436,954,980]" metricMagnitude="3" metricUnit="m" metricValue="1.219" pageId="1" pageNumber="58" unit="m" value="1219.0">1,219 m</quantity>
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(according to the topographic map of the region),
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<date id="FFC6104AFFBA78691A19FC6DFC3BFC79" box="[769,931,994,1020]" pageId="1" pageNumber="58" value="2003-07-18">18 July 2003</date>
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, coll. D. Bruce Means,
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<collectionCode id="ED69AE4FFFBA78691DD5FC6DFABAFC79" LSID="urn:lsid:biocol.org:col:34871" box="[1229,1314,994,1020]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="1" pageNumber="58">USNM</collectionCode>
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1098372;
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<typeStatus id="54C38828FFBA7869198FFB85FF67FBA1" box="[151,255,1034,1060]" pageId="1" pageNumber="58" type="paratype">paratype</typeStatus>
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, adult male (cw 18.5, cl 14.5, ch 6.3, fw
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<quantity id="4C809B6FFFBA78691BC4FB85FCAFFBA1" box="[732,823,1034,1060]" metricMagnitude="-3" metricUnit="m" metricValue="5.5" pageId="1" pageNumber="58" unit="mm" value="5.5">5.5 mm</quantity>
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) same collection data as
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<typeStatus id="54C38828FFBA78691D45FB85FB5FFBA1" box="[1117,1223,1034,1060]" pageId="1" pageNumber="58" type="holotype">holotype</typeStatus>
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,
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<collectionCode id="ED69AE4FFFBA78691DCAFB85FABFFBA1" LSID="urn:lsid:biocol.org:col:34871" box="[1234,1319,1034,1060]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34871" name="Smithsonian Institution, National Museum of Natural History" pageId="1" pageNumber="58">USNM</collectionCode>
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1098373.
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</paragraph>
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</subSubSection>
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<subSubSection id="C3626501FFBA786919DEFBBDFC0DFB19" pageId="1" pageNumber="58" type="diagnosis">
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<paragraph id="8BC7368AFFBA786919DEFBBDFC0DFB19" blockId="1.[151,1437,874,2020]" pageId="1" pageNumber="58">
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<emphasis id="B90CEA98FFBA786919DEFBBDFEDEFBC9" bold="true" box="[198,326,1074,1100]" pageId="1" pageNumber="58">Diagnosis.</emphasis>
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First gonopod with auxiliar cephalic lobe rounded, dome-shaped, conspicuously larger than mesial lobe; distal part of mesial lobe with enlarged triangular tooth-like process occupying half of this lobe; marginal lobe large, conspicuous, horseshoe-shaped (
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<figureCitation id="13432A0FFFBA78691A10FB0DFC1FFB19" box="[776,903,1154,1180]" captionStart="FIGURES 9 – 11" captionStartId="3.[151,270,1750,1774]" captionTargetBox="[262,1279,950,1749]" captionTargetId="figure@3.[239,1347,926,1761]" captionTargetPageId="3" captionText="FIGURES 9 – 11. Microthelphusa meansi new species. Male holotype, cw 22.5 mm, from the Wokomung Massif, Guyana, USNM 1098373, left first gonopod. 9, caudal view; 10, lateral view; 11, cephalic view. Scale = 3.0 mm." httpUri="https://zenodo.org/record/176196/files/figure.png" pageId="1" pageNumber="58">Figs. 9–11</figureCitation>
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).
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</paragraph>
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||
</subSubSection>
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||
<subSubSection id="C3626501FFBA786B19DEFB25FB21FC8F" lastPageId="3" lastPageNumber="60" pageId="1" pageNumber="58" type="description">
|
||
<paragraph id="8BC7368AFFBA786B19DEFB25FE31FDEF" blockId="1.[151,1437,874,2020]" lastBlockId="3.[151,1437,152,898]" lastPageId="3" lastPageNumber="60" pageId="1" pageNumber="58">
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||
<emphasis id="B90CEA98FFBA786919DEFB25FE67FB41" bold="true" box="[198,511,1194,1220]" pageId="1" pageNumber="58">
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||
Description of
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<typeStatus id="54C38828FFBA7869189EFB25FE62FB41" box="[390,506,1194,1220]" pageId="1" pageNumber="58" type="holotype">Holotype</typeStatus>
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.
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</emphasis>
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Carapace transversely oval, wide (cw/fw 3.2), medium height (ch/fw 1.1). Dorsal surface of frontal, antero-lateral regions smooth; cervical groove deep, long, straight, diagonal, reaching anterolateral margin; rest of carapace regions poorly defined by grooves. Anterolateral margin prominent, granulated. Postfrontal lobes low. Surface of cephalothorax between postfrontal lobes and front inclined anteriorly, concave in frontal view. Superior frontal ridge straight, relatively broad, about one third carapace width (fw/cw 0.3), frontal margin thin and sinuous in frontal view. Eyestalks normal. Upper, lower borders of orbit faintly granulated. Suborbital region of carapace sidewall completely smooth, subhepatic region with faint granules; sidewall with distinct longitudinal (epimeral) suture and very faint vertical (pleural) groove; pterygostomial region covered with dense setae. First thoracic sternal sulcus s1/s2 short, deep, horizontal; second sulcus (s2/s3) horizontal, crossing whole sternum, third sulcus (s3/s4) reduced to two faint notches on sides; episternal sulci s4/e4, s5/e5, s6/e6, s7/e7 absent. Third maxillipeds filling entire oral field, except for horseshoe-shaped anterior respiratory openings at superior lateral corners; exopod of third maxilliped reduced (0.3 x length of ischium); inner surface of merus of third maxilliped with field of short bristles; external surface of ischium of third maxilliped smooth. Epistome prominent, smooth, lower margin trilobed consisting of large triangular epistomial tooth in center, flanked by two smaller triangular teeth marking medial margins of anterior respiratory openings. Mandibular palp two-segmented; terminal segment bilobed, anterior lobe subequal to posterior lobe. Adult male abdomen triangular, segments a1–a6 four-sided, telson (a7) a broad triangle with rounded apex; segments a5–a6 broadest. Chelipeds asymmetrical, palm of right chela enlarged, lower and upper margins of propodus and moveable fingers smooth, fingers thickened, with large, rounded teeth on cutting edges, tips pointed and overlapping; dactylus of major cheliped slender, arched, enclosing oval interspace when fingers closed. Carpal tooth of cheliped with weak low triangular tooth on internal margin; superior surface of merus smooth. Ambulatory legs (pereopods p2–p5) slender, p3 longest, p5 shortest, dactyli of p2–p5 tapering to point, each bearing four rows of downward-pointing short, sharp spines. In caudal view, first gonopod straight, robust, base broad, middle straight, distal end widened by three distinct processes - marginal, auxiliar cephalic, and mesial lobes. Apex broadened laterally by semicircular lateral/marginal processes, broadened medially by process with two points (cephalic and mesial lobes). Auxiliar cephalic lobe rounded, dome-shaped, conspicuously larger than mesial lobe; mesial lobe wide, flattened, distal part produced into enlarged triangular tooth-like process occupying half of lobe, inferior border produced into a broad lobe; marginal lobe large, conspicuous, horseshoe-shaped. Field of apical spines well developed, forming elongated curved patch along medial side running diagonally to longitudinal axis of gonopod, delimitated by cephalic and caudal borders of apex; marginal suture sinuous, situated on caudal side. Second gonopod terminal article a long flagellum, with numerous spinules on distal portion; tip cup-shaped, with relatively strong spines directed distally.
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</paragraph>
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<caption id="DF076602FFB9786A198FF8DAFC71F850" httpUri="https://zenodo.org/record/176195/files/figure.png" pageId="2" pageNumber="59" targetBox="[157,1412,189,1843]" targetPageId="2">
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||
<paragraph id="8BC7368AFFB9786A198FF8DAFC71F850" blockId="2.[151,1436,1877,2005]" pageId="2" pageNumber="59">
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<emphasis id="B90CEA98FFB9786A198FF8DAFEDBF8E8" bold="true" box="[151,323,1877,1901]" pageId="2" pageNumber="59">FIGURES 1–8.</emphasis>
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<taxonomicName id="4C784D09FFB9786A184AF8D9FDD4F8E8" box="[338,588,1878,1901]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="59" phylum="Arthropoda" rank="species" species="meansi" status="sp. nov.">
|
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<emphasis id="B90CEA98FFB9786A184AF8D9FDD4F8E8" box="[338,588,1878,1901]" italics="true" pageId="2" pageNumber="59">Microthelphusa meansi</emphasis>
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||
</taxonomicName>
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||
<taxonomicNameLabel id="A23F57E3FFB9786A1B4CF8D9FD41F8E8" box="[596,729,1878,1901]" pageId="2" pageNumber="59" rank="species">new species</taxonomicNameLabel>
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||
. Male holotype, cw 22.5 mm, from the Wokomung Massif, Guyana, USNM 1098372. 1, carapace, dorsal view; 2, cephalothorax, frontal view; 3, right cheliped, frontal view; 4, left cheliped, frontal view; 5, carpus and merus of right cheliped, dorsal view; 6, carpus and merus of right cheliped, inferior view; 7, left third maxilliped; 8, sternum. Scale
|
||
<emphasis id="B90CEA98FFB9786A1B84F832FD33F850" bold="true" box="[668,683,1981,2005]" pageId="2" pageNumber="59">=</emphasis>
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3.2 mm (1, 2), 3.5 mm (3–8).
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</paragraph>
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</caption>
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||
<paragraph id="8BC7368AFFB8786B19DEFDF8FF64FD3F" blockId="3.[151,1437,152,898]" pageId="3" pageNumber="60">
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||
<emphasis id="B90CEA98FFB8786B19DEFDF8FE8AFD14" bold="true" box="[198,274,631,657]" pageId="3" pageNumber="60">Color.</emphasis>
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In life, dorsal surface of carapace, walking legs, chelipeds, red; ventral surfaces of cephalothorax pale red.
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</paragraph>
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<paragraph id="8BC7368AFFB8786B19DEFD48FB21FC8F" blockId="3.[151,1437,152,898]" pageId="3" pageNumber="60">
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<emphasis id="B90CEA98FFB8786B19DEFD48FE98FD64" bold="true" box="[198,256,711,737]" pageId="3" pageNumber="60">Size.</emphasis>
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The adult size range based on measurements of the specimens examined is between cw 18 and
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<quantity id="4C809B6FFFB8786B1C70FD47FF50FC8F" metricMagnitude="-2" metricUnit="m" metricValue="2.25" pageId="3" pageNumber="60" unit="mm" value="22.5">22.5 mm</quantity>
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, although a larger specimen (with an estimated cw
|
||
<quantity id="4C809B6FFFB8786B1A07FD7FFCECFC8F" box="[799,884,752,778]" metricMagnitude="-2" metricUnit="m" metricValue="3.0" pageId="3" pageNumber="60" unit="mm" value="30.0">30 mm</quantity>
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||
) was seen but not captured.
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||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C3626501FFB8786B19DEFC98FD8BFC07" pageId="3" pageNumber="60" type="materials_examined">
|
||
<paragraph id="8BC7368AFFB8786B19DEFC98FD8BFC07" blockId="3.[151,1437,152,898]" pageId="3" pageNumber="60">
|
||
<emphasis id="B90CEA98FFB8786B19DEFC98FEF4FCB4" bold="true" box="[198,364,791,817]" pageId="3" pageNumber="60">
|
||
<typeStatus id="54C38828FFB8786B19DEFC98FE9BFCB4" box="[198,259,791,817]" pageId="3" pageNumber="60">Type</typeStatus>
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||
locality.
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||
</emphasis>
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Middle Camp,
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<quantity id="4C809B6FFFB8786B1B3EFC97FD1FFCB7" box="[550,647,792,818]" metricMagnitude="3" metricUnit="m" metricValue="1.135" pageId="3" pageNumber="60" unit="m" value="1135.0">1,135 m</quantity>
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||
asl according to altimeter (but topographic map of the region indicates this locality is about
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||
<quantity id="4C809B6FFFB8786B18E5FCCFFDF2FCDF" box="[509,618,832,858]" metricMagnitude="3" metricUnit="m" metricValue="1.219" pageId="3" pageNumber="60" unit="m" value="1219.0">1,219 m</quantity>
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||
), Wokomung Massif, Potaro-Siparuni Province, western
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<collectingCountry id="F36F761AFFB8786B1C59FCCFFA04FCDF" box="[1345,1436,832,858]" name="Guyana" pageId="3" pageNumber="60">Guyana</collectingCountry>
|
||
(
|
||
<geoCoordinate id="EE4C504DFFB8786B1987FCE7FED1FC07" box="[159,329,872,898]" direction="north" orientation="latitude" pageId="3" pageNumber="60" precision="1" value="5.110083">05°06'36.3'' N</geoCoordinate>
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||
,
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||
<geoCoordinate id="EE4C504DFFB8786B184DFCE7FD9EFC07" box="[341,518,872,898]" direction="west" orientation="longitude" pageId="3" pageNumber="60" precision="1" value="-59.820583">59°49'14.1'' W</geoCoordinate>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<caption id="DF076602FFB8786B198FF959FAB4F894" httpUri="https://zenodo.org/record/176196/files/figure.png" pageId="3" pageNumber="60" targetBox="[262,1279,950,1749]" targetPageId="3">
|
||
<paragraph id="8BC7368AFFB8786B198FF959FAB4F894" blockId="3.[151,1436,1750,1809]" pageId="3" pageNumber="60">
|
||
<emphasis id="B90CEA98FFB8786B198FF959FED7F96B" bold="true" box="[151,335,1750,1774]" pageId="3" pageNumber="60">FIGURES 9–11.</emphasis>
|
||
<taxonomicName id="4C784D09FFB8786B184EF958FDC8F96B" box="[342,592,1751,1774]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="3" pageNumber="60" phylum="Arthropoda" rank="species" species="meansi" status="sp. nov.">
|
||
<emphasis id="B90CEA98FFB8786B184EF958FDC8F96B" box="[342,592,1751,1774]" italics="true" pageId="3" pageNumber="60">Microthelphusa meansi</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A23F57E3FFB8786B1B40F958FD43F96B" box="[600,731,1751,1774]" pageId="3" pageNumber="60" rank="species">new species</taxonomicNameLabel>
|
||
. Male holotype, cw 22.5 mm, from the Wokomung Massif, Guyana, USNM 1098373, left first gonopod. 9, caudal view; 10, lateral view; 11, cephalic view. Scale
|
||
<emphasis id="B90CEA98FFB8786B1DA5F976FB54F894" bold="true" box="[1213,1228,1785,1809]" pageId="3" pageNumber="60">=</emphasis>
|
||
3.0 mm.
|
||
</paragraph>
|
||
</caption>
|
||
<subSubSection id="C3626501FFB8786B19DEF8E3FAD3F853" pageId="3" pageNumber="60" type="distribution">
|
||
<paragraph id="8BC7368AFFB8786B19DEF8E3FAD3F853" blockId="3.[151,1436,1900,2006]" pageId="3" pageNumber="60">
|
||
<emphasis id="B90CEA98FFB8786B19DEF8E3FEFFF803" bold="true" box="[198,359,1900,1926]" pageId="3" pageNumber="60">Distribution.</emphasis>
|
||
This species is known only from the
|
||
<typeStatus id="54C38828FFB8786B1A20F8E3FCF3F803" box="[824,875,1900,1926]" pageId="3" pageNumber="60">type</typeStatus>
|
||
locality. The Wokomung Massif (
|
||
<quantity id="4C809B6FFFB8786B1C16F8E3FAEBF803" box="[1294,1395,1900,1926]" metricMagnitude="3" metricUnit="m" metricValue="1.65" pageId="3" pageNumber="60" unit="m" value="1650.0">1,650 m</quantity>
|
||
) in
|
||
<collectingCountry id="F36F761AFFB8786B198FF81BFF6AF82B" box="[151,242,1940,1966]" name="Guyana" pageId="3" pageNumber="60">Guyana</collectingCountry>
|
||
is one of the easternmost peaks of the
|
||
<collectingCountry id="F36F761AFFB8786B1BC6F81BFCAAF82B" box="[734,818,1940,1966]" name="Guyana" pageId="3" pageNumber="60">Guiana</collectingCountry>
|
||
Shield that includes a series of steep-walled table mountains (
|
||
<emphasis id="B90CEA98FFB8786B183AF832FEF0F853" box="[290,360,1981,2006]" italics="true" pageId="3" pageNumber="60">tepuis</emphasis>
|
||
) that each supports a unique flora and fauna, especially at elevations above
|
||
<quantity id="4C809B6FFFB8786B1DFBF833FADFF853" box="[1251,1351,1980,2006]" metricMagnitude="3" metricUnit="m" metricValue="1.0" pageId="3" pageNumber="60" unit="m" value="1000.0">1,000 m</quantity>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C3626501FFBF786C19DEFF18FCFCFEAF" pageId="4" pageNumber="61" type="etymology">
|
||
<paragraph id="8BC7368AFFBF786C19DEFF18FCFCFEAF" blockId="4.[151,1437,151,2018]" pageId="4" pageNumber="61">
|
||
<emphasis id="B90CEA98FFBF786C19DEFF18FED3FF34" bold="true" box="[198,331,151,177]" pageId="4" pageNumber="61">Etymology</emphasis>
|
||
. The species is named for the distinguished
|
||
<collectingCountry id="F36F761AFFBF786C1A7BFF17FC11FF37" box="[867,905,152,178]" name="United States of America" pageId="4" pageNumber="61">US</collectingCountry>
|
||
natural historian Dr. D. Bruce Means, President and Executive Director of the Coastal Plains Institute and Land Conservancy, Tallahassee, Florida,
|
||
<collectingCountry id="F36F761AFFBF786C1C42FF4FFA00FF5F" box="[1370,1432,192,218]" name="United States of America" pageId="4" pageNumber="61">USA</collectingCountry>
|
||
, who collected the specimens used in this study. Dr. Means is also an Adjunct Professor in the Department of Biological Science at Florida State University in Tallahassee.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C3626501FFBF786C19DEFEB8FD9CFDC7" pageId="4" pageNumber="61" type="discussion">
|
||
<paragraph id="8BC7368AFFBF786C19DEFEB8FD9CFDC7" blockId="4.[151,1437,151,2018]" pageId="4" pageNumber="61">
|
||
<emphasis id="B90CEA98FFBF786C19DEFEB8FEA7FED4" bold="true" box="[198,319,311,337]" pageId="4" pageNumber="61">Remarks.</emphasis>
|
||
This species is assigned to
|
||
<taxonomicName id="4C784D09FFBF786C1B93FEB7FCDBFED4" box="[651,835,312,337]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B90CEA98FFBF786C1B93FEB7FCDBFED4" box="[651,835,312,337]" italics="true" pageId="4" pageNumber="61">Microthelphusa</emphasis>
|
||
</taxonomicName>
|
||
based on the following generic definitions of characters provided by
|
||
<bibRefCitation id="EFE94B7BFFBF786C1861FEEFFDC8FEFF" author="Pretzmann" box="[377,592,352,378]" pageId="4" pageNumber="62" refString="Pretzmann, G. (1968) Neue Sudamerikanische Susswasserkrabben der Gattung Pseudothelphusa. Entomologisches Nachrichtenblatt, 15, 1 - 15." type="journal article" year="1968">Pretzmann (1968)</bibRefCitation>
|
||
,
|
||
<bibRefCitation id="EFE94B7BFFBF786C1B45FEEFFCA8FEFF" author="Rodriguez" box="[605,816,352,378]" pageId="4" pageNumber="62" refString="Rodriguez, G. (1982) Les crabes d'eau douce d'Amerique. Famille des Pseudothelphusidae. Faune Tropicale, 22, 1 - 223." type="journal article" year="1982">Rodríguez (1982)</bibRefCitation>
|
||
, and
|
||
<bibRefCitation id="EFE94B7BFFBF786C1A68FEEFFB82FEFF" author="Suarez" box="[880,1050,352,378]" pageId="4" pageNumber="62" refString="Suarez, H. (2006) New species of freshwater crab from Venezuela and redescription of Microthelphusa rodriguezi Pretzmann, 1968 (Brachyura: Pseudothelphusoidea: Pseudothelphusidae). Journal of Crustacean Biology, 26 (2), 242 - 247." type="journal article" year="2006">Suárez (2006)</bibRefCitation>
|
||
. The exopod of the third maxilliped is about 0.3 x the length of the ischium; the first gonopod is straight and robust with a field of apical spines running diagonally to the longitudinal axis; the mesial lobe is wide, flattened, and its distal part is produced into a triangular process while its inferior border is a broad lobe; the caudal lobe is separated from the mesial process, and there is a spine or lobe over the mesial border; the marginal lobe is prominent joins with the border of the cephalic lobe.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C3626501FFBF786D19DEFDDFFDD6FDEF" lastPageId="5" lastPageNumber="62" pageId="4" pageNumber="61" type="reference_group">
|
||
<paragraph id="8BC7368AFFBF786C19DEFDDFFDC8FC57" blockId="4.[151,1437,151,2018]" pageId="4" pageNumber="61">
|
||
<taxonomicName id="4C784D09FFBF786C19DEFDDFFE45FDEC" ID-CoL="438FZ" box="[198,477,592,617]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C19DEFDDFFE45FDEC" box="[198,477,592,617]" italics="true" pageId="4" pageNumber="61">Microthelphusa meansi</emphasis>
|
||
</taxonomicName>
|
||
is morphologically similar to
|
||
<taxonomicName id="4C784D09FFBF786C1A49FDDFFC4FFDEC" ID-CoL="6RK3F" box="[849,983,592,617]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="wymani">
|
||
<emphasis id="B90CEA98FFBF786C1A49FDDFFC4FFDEC" box="[849,983,592,617]" italics="true" pageId="4" pageNumber="61">M. wymani</emphasis>
|
||
</taxonomicName>
|
||
from
|
||
<collectingCountry id="F36F761AFFBF786C1D3EFDDFFB14FDEF" box="[1062,1164,592,618]" name="Suriname" pageId="4" pageNumber="61">Surinam</collectingCountry>
|
||
,
|
||
<taxonomicName id="4C784D09FFBF786C1D83FDDFFAB1FDEC" ID-CoL="438G6" box="[1179,1321,592,617]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="somanni">
|
||
<emphasis id="B90CEA98FFBF786C1D83FDDFFAB1FDEC" box="[1179,1321,592,617]" italics="true" pageId="4" pageNumber="61">M. somanni</emphasis>
|
||
</taxonomicName>
|
||
from the Upper Rio Negro in
|
||
<collectingCountry id="F36F761AFFBF786C1894FDF7FE4CFD17" box="[396,468,632,658]" name="Brazil" pageId="4" pageNumber="61">Brazil</collectingCountry>
|
||
and
|
||
<collectingCountry id="F36F761AFFBF786C1B16FDF7FD11FD17" box="[526,649,632,658]" name="Venezuela" pageId="4" pageNumber="61">Venezuela</collectingCountry>
|
||
, and
|
||
<taxonomicName id="4C784D09FFBF786C1BD1FDF7FCF2FD14" ID-CoL="438G4" box="[713,874,632,657]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="rodriguezi">
|
||
<emphasis id="B90CEA98FFBF786C1BD1FDF7FCF2FD14" box="[713,874,632,657]" italics="true" pageId="4" pageNumber="61">M. rodriguezi</emphasis>
|
||
</taxonomicName>
|
||
from
|
||
<collectingCountry id="F36F761AFFBF786C1AACFDF7FB8BFD17" box="[948,1043,632,658]" name="Guyana" pageId="4" pageNumber="61">Guyana</collectingCountry>
|
||
. Although these four species are similar in many respects they differ in taxonomically important characters of the mesial, auxiliar cephalic, and marginal lobes of the first gonopod (
|
||
<bibRefCitation id="EFE94B7BFFBF786C1B5EFD47FC91FD67" author="Rodriguez" box="[582,777,712,738]" pageId="4" pageNumber="62" refString="Rodriguez, G. (1982) Les crabes d'eau douce d'Amerique. Famille des Pseudothelphusidae. Faune Tropicale, 22, 1 - 223." type="journal article" year="1982">Rodríguez 1982</bibRefCitation>
|
||
).
|
||
<taxonomicName id="4C784D09FFBF786C1A3EFD47FBA2FD64" ID-CoL="438FZ" box="[806,1082,712,737]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C1A3EFD47FBA2FD64" box="[806,1082,712,737]" italics="true" pageId="4" pageNumber="61">Microthelphusa meansi</emphasis>
|
||
</taxonomicName>
|
||
can be distinguished from
|
||
<taxonomicName id="4C784D09FFBF786C1C64FD47FF6AFC8C" ID-CoL="6RK3F" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="wymani">
|
||
<emphasis id="B90CEA98FFBF786C1C64FD47FF6AFC8C" italics="true" pageId="4" pageNumber="61">M. wymani</emphasis>
|
||
</taxonomicName>
|
||
by the following characters of the first gonopod (
|
||
<bibRefCitation id="EFE94B7BFFBF786C1A5FFD7FFBEFFC8F" author="Rodriguez" box="[839,1143,752,778]" pageId="4" pageNumber="62" refString="Rodriguez, G. (1982) Les crabes d'eau douce d'Amerique. Famille des Pseudothelphusidae. Faune Tropicale, 22, 1 - 223." type="journal article" year="1982">Rodríguez 1982, fig. 112</bibRefCitation>
|
||
). Although the cephalic lobe of both species is dome-shaped, that of
|
||
<taxonomicName id="4C784D09FFBF786C1BBEFC97FCB9FCB4" ID-CoL="438FZ" box="[678,801,792,817]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C1BBEFC97FCB9FCB4" box="[678,801,792,817]" italics="true" pageId="4" pageNumber="61">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
is conspicuously larger than the mesial lobe, whereas that of
|
||
<taxonomicName id="4C784D09FFBF786C19F3FCCFFEF5FCDC" ID-CoL="6RK3F" box="[235,365,832,857]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="wymani">
|
||
<emphasis id="B90CEA98FFBF786C19F3FCCFFEF5FCDC" box="[235,365,832,857]" italics="true" pageId="4" pageNumber="61">M. wymani</emphasis>
|
||
</taxonomicName>
|
||
is smaller than the mesial lobe; the base of the distal tooth of the mesial lobe of
|
||
<taxonomicName id="4C784D09FFBF786C1C39FCCFFA04FCDC" ID-CoL="438FZ" box="[1313,1436,832,857]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C1C39FCCFFA04FCDC" box="[1313,1436,832,857]" italics="true" pageId="4" pageNumber="61">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
is large and occupies half of this lobe, whereas that of
|
||
<taxonomicName id="4C784D09FFBF786C1A09FCE7FC0BFC04" ID-CoL="6RK3F" box="[785,915,872,897]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="wymani">
|
||
<emphasis id="B90CEA98FFBF786C1A09FCE7FC0BFC04" box="[785,915,872,897]" italics="true" pageId="4" pageNumber="61">M. wymani</emphasis>
|
||
</taxonomicName>
|
||
is much smaller and occupies only a quarter of the lobe; and the cephalic lobe of
|
||
<taxonomicName id="4C784D09FFBF786C1B56FC1FFD52FC2C" ID-CoL="438FZ" box="[590,714,912,937]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C1B56FC1FFD52FC2C" box="[590,714,912,937]" italics="true" pageId="4" pageNumber="61">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
is large, conspicuous, and horseshoe-shaped whereas that of
|
||
<taxonomicName id="4C784D09FFBF786C198FFC37FE81FC54" ID-CoL="6RK3F" box="[151,281,952,977]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="wymani">
|
||
<emphasis id="B90CEA98FFBF786C198FFC37FE81FC54" box="[151,281,952,977]" italics="true" pageId="4" pageNumber="61">M. wymani</emphasis>
|
||
</taxonomicName>
|
||
is low and inconspicuous.
|
||
</paragraph>
|
||
<paragraph id="8BC7368AFFBF786C19DEFC6FFC1FF9D7" blockId="4.[151,1437,151,2018]" pageId="4" pageNumber="61">
|
||
<taxonomicName id="4C784D09FFBF786C19DEFC6FFE45FC7C" ID-CoL="438FZ" box="[198,477,992,1017]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C19DEFC6FFE45FC7C" box="[198,477,992,1017]" italics="true" pageId="4" pageNumber="61">Microthelphusa meansi</emphasis>
|
||
</taxonomicName>
|
||
can be distinguished from
|
||
<taxonomicName id="4C784D09FFBF786C1A35FC6FFC5AFC7C" box="[813,962,992,1017]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="sommani">
|
||
<emphasis id="B90CEA98FFBF786C1A35FC6FFC5AFC7C" box="[813,962,992,1017]" italics="true" pageId="4" pageNumber="61">M. sommani</emphasis>
|
||
</taxonomicName>
|
||
as follows (
|
||
<bibRefCitation id="EFE94B7BFFBF786C1D42FC6FFA17FC7F" author="Rodriguez" box="[1114,1423,992,1018]" pageId="4" pageNumber="62" refString="Rodriguez, G. (1982) Les crabes d'eau douce d'Amerique. Famille des Pseudothelphusidae. Faune Tropicale, 22, 1 - 223." type="journal article" year="1982">Rodríguez 1982, fig. 111</bibRefCitation>
|
||
). The cephalic lobe of
|
||
<taxonomicName id="4C784D09FFBF786C188DFB87FD89FBA4" ID-CoL="438FZ" box="[405,529,1032,1057]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C188DFB87FD89FBA4" box="[405,529,1032,1057]" italics="true" pageId="4" pageNumber="61">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
is conspicuously larger that the mesial lobe, whereas that of
|
||
<taxonomicName id="4C784D09FFBF786C1DF5FB87FA18FBA4" box="[1261,1408,1032,1057]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="sommani">
|
||
<emphasis id="B90CEA98FFBF786C1DF5FB87FA18FBA4" box="[1261,1408,1032,1057]" italics="true" pageId="4" pageNumber="61">M. sommani</emphasis>
|
||
</taxonomicName>
|
||
is smaller than the mesial lobe; the base of the distal tooth of the mesial lobe of
|
||
<taxonomicName id="4C784D09FFBF786C1D3DFBBFFB38FBCC" ID-CoL="438FZ" box="[1061,1184,1072,1097]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C1D3DFBBFFB38FBCC" box="[1061,1184,1072,1097]" italics="true" pageId="4" pageNumber="61">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
is large and occupies half of this lobe, whereas in
|
||
<taxonomicName id="4C784D09FFBF786C18F6FBD7FD19FBF4" box="[494,641,1112,1137]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="sommani">
|
||
<emphasis id="B90CEA98FFBF786C18F6FBD7FD19FBF4" box="[494,641,1112,1137]" italics="true" pageId="4" pageNumber="61">M. sommani</emphasis>
|
||
</taxonomicName>
|
||
the margin of the mesial lobe is straight and lacks a distinct distal tooth; and the cephalic lobe of
|
||
<taxonomicName id="4C784D09FFBF786C1B0CFB0FFD0AFB1C" ID-CoL="438FZ" box="[532,658,1152,1177]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C1B0CFB0FFD0AFB1C" box="[532,658,1152,1177]" italics="true" pageId="4" pageNumber="61">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
is large, conspicuous, and horseshoe-shaped whereas that of
|
||
<taxonomicName id="4C784D09FFBF786C1C64FB0FFE99FB44" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="sommani">
|
||
<emphasis id="B90CEA98FFBF786C1C64FB0FFE99FB44" italics="true" pageId="4" pageNumber="61">M. sommani</emphasis>
|
||
</taxonomicName>
|
||
is low and inconspicuous.
|
||
<taxonomicName id="4C784D09FFBF786C1B56FB27FCFAFB44" ID-CoL="438FZ" box="[590,866,1192,1217]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C1B56FB27FCFAFB44" box="[590,866,1192,1217]" italics="true" pageId="4" pageNumber="61">Microthelphusa meansi</emphasis>
|
||
</taxonomicName>
|
||
is similar to
|
||
<taxonomicName id="4C784D09FFBF786C1D19FB27FB3AFB44" ID-CoL="438G4" box="[1025,1186,1192,1217]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="rodriguezi">
|
||
<emphasis id="B90CEA98FFBF786C1D19FB27FB3AFB44" box="[1025,1186,1192,1217]" italics="true" pageId="4" pageNumber="61">M. rodriguezi</emphasis>
|
||
</taxonomicName>
|
||
from
|
||
<collectingCountry id="F36F761AFFBF786C1DF4FB27FADFFB47" box="[1260,1351,1192,1218]" name="Guyana" pageId="4" pageNumber="61">Guyana</collectingCountry>
|
||
in that the auxiliar cephalic lobe of the first gonopod is larger than the mesial lobe, and the mesial lobe has an enlarged tooth-like distal process (
|
||
<bibRefCitation id="EFE94B7BFFBF786C1B2AFB77FC84FA97" author="Suarez" box="[562,796,1272,1298]" pageId="4" pageNumber="62" refString="Suarez, H. (2006) New species of freshwater crab from Venezuela and redescription of Microthelphusa rodriguezi Pretzmann, 1968 (Brachyura: Pseudothelphusoidea: Pseudothelphusidae). Journal of Crustacean Biology, 26 (2), 242 - 247." type="journal article" year="2006">Suárez 2006, fig. 4</bibRefCitation>
|
||
). However,
|
||
<taxonomicName id="4C784D09FFBF786C1AAFFB77FBABFA94" ID-CoL="438FZ" box="[951,1075,1272,1297]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C1AAFFB77FBABFA94" box="[951,1075,1272,1297]" italics="true" pageId="4" pageNumber="61">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
can be distinguished from
|
||
<taxonomicName id="4C784D09FFBF786C1C64FB77FE88FABC" ID-CoL="438G4" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="rodriguezi">
|
||
<emphasis id="B90CEA98FFBF786C1C64FB77FE88FABC" italics="true" pageId="4" pageNumber="61">M. rodriguezi</emphasis>
|
||
</taxonomicName>
|
||
as follows. The auxiliar cephalic lobe of
|
||
<taxonomicName id="4C784D09FFBF786C1A18FAAFFCE2FABC" ID-CoL="438FZ" box="[768,890,1312,1337]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C1A18FAAFFCE2FABC" box="[768,890,1312,1337]" italics="true" pageId="4" pageNumber="61">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
is rounded and dome–like, whereas that of
|
||
<taxonomicName id="4C784D09FFBF786C1C64FAAFFE88FAE4" ID-CoL="438G4" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="rodriguezi">
|
||
<emphasis id="B90CEA98FFBF786C1C64FAAFFE88FAE4" italics="true" pageId="4" pageNumber="61">M. rodriguezi</emphasis>
|
||
</taxonomicName>
|
||
is broad and spearhead-shaped with a point that is directed upward laterally; and the marginal lobe of
|
||
<taxonomicName id="4C784D09FFBF786C19AEFAFFFEA8FA0C" ID-CoL="438FZ" box="[182,304,1392,1417]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBF786C19AEFAFFFEA8FA0C" box="[182,304,1392,1417]" italics="true" pageId="4" pageNumber="61">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
is large, conspicuous, and horseshoe-shaped whereas that of
|
||
<taxonomicName id="4C784D09FFBF786C1AE4FAFFFB04FA0C" ID-CoL="438G4" box="[1020,1180,1392,1417]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="rodriguezi">
|
||
<emphasis id="B90CEA98FFBF786C1AE4FAFFFB04FA0C" box="[1020,1180,1392,1417]" italics="true" pageId="4" pageNumber="61">M. rodriguezi</emphasis>
|
||
</taxonomicName>
|
||
is low and inconspicuous.
|
||
<taxonomicName id="4C784D09FFBF786C19FEFA17FDB8FA34" ID-CoL="438G4" box="[230,544,1432,1457]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="rodriguezi">
|
||
<emphasis id="B90CEA98FFBF786C19FEFA17FDB8FA34" box="[230,544,1432,1457]" italics="true" pageId="4" pageNumber="61">Microthelphusa rodriguezi</emphasis>
|
||
</taxonomicName>
|
||
is the only other species of this genus that has been recorded from
|
||
<collectingCountry id="F36F761AFFBF786C1C59FA17FA04FA37" box="[1345,1436,1432,1458]" name="Guyana" pageId="4" pageNumber="61">Guyana</collectingCountry>
|
||
(
|
||
<bibRefCitation id="EFE94B7BFFBF786C1986FA4FFEFFFA5F" author="Pretzmann" box="[158,359,1472,1498]" pageId="4" pageNumber="62" refString="Pretzmann, G. (1968) Neue Sudamerikanische Susswasserkrabben der Gattung Pseudothelphusa. Entomologisches Nachrichtenblatt, 15, 1 - 15." type="journal article" year="1968">Pretzmann 1968</bibRefCitation>
|
||
). The
|
||
<typeStatus id="54C38828FFBF786C18D9FA4FFE6CFA5F" box="[449,500,1472,1498]" pageId="4" pageNumber="61">type</typeStatus>
|
||
locality of
|
||
<taxonomicName id="4C784D09FFBF786C1B9BFA4FFCBEFA5C" ID-CoL="438G4" box="[643,806,1472,1497]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="61" phylum="Arthropoda" rank="species" species="rodriguezi">
|
||
<emphasis id="B90CEA98FFBF786C1B9BFA4FFCBEFA5C" box="[643,806,1472,1497]" italics="true" pageId="4" pageNumber="61">M. rodriguezi</emphasis>
|
||
</taxonomicName>
|
||
provided by
|
||
<bibRefCitation id="EFE94B7BFFBF786C1AD3FA4FFBEBFA5F" author="Suarez" box="[971,1139,1472,1498]" pageId="4" pageNumber="62" refString="Suarez, H. (2006) New species of freshwater crab from Venezuela and redescription of Microthelphusa rodriguezi Pretzmann, 1968 (Brachyura: Pseudothelphusoidea: Pseudothelphusidae). Journal of Crustacean Biology, 26 (2), 242 - 247." type="journal article" year="2006">Suárez (2006)</bibRefCitation>
|
||
is “the Rupununi River, Melville,
|
||
<collectingCountry id="F36F761AFFBF786C1813FA67FE26F987" box="[267,446,1512,1538]" name="Guyana" pageId="4" pageNumber="61">British Guiana</collectingCountry>
|
||
”, which is most likely Dadanawa (= Melvilles Ranch), in the Upper Takutu-Upper
|
||
<collectingCountry id="F36F761AFFBF786C198FF99FFE88F9AF" box="[151,272,1552,1578]" name="Guyana" pageId="4" pageNumber="61">Essequibo</collectingCountry>
|
||
Region of
|
||
<collectingCountry id="F36F761AFFBF786C188BF99FFE76F9AF" box="[403,494,1552,1578]" name="Guyana" pageId="4" pageNumber="61">Guyana</collectingCountry>
|
||
(
|
||
<geoCoordinate id="EE4C504DFFBF786C18E7F99FFD1CF9AF" box="[511,644,1552,1578]" direction="north" orientation="latitude" pageId="4" pageNumber="61" precision="15" value="2.8333333">2°49'60'' N</geoCoordinate>
|
||
,
|
||
<geoCoordinate id="EE4C504DFFBF786C1B88F99FFC85F9AF" box="[656,797,1552,1578]" direction="west" orientation="longitude" pageId="4" pageNumber="61" precision="15" value="-59.516666">59°31'0'' W</geoCoordinate>
|
||
). This locality is
|
||
<quantity id="4C809B6FFFBF786C1AF7F99FFBA1F9AF" box="[1007,1081,1552,1578]" metricMagnitude="2" metricUnit="m" metricValue="1.56" pageId="4" pageNumber="61" unit="m" value="156.0">156 m</quantity>
|
||
asl making it the only species in the genus that occurs at altitudes below
|
||
<quantity id="4C809B6FFFBF786C1B90F9B7FD4BF9D7" box="[648,723,1592,1618]" metricMagnitude="2" metricUnit="m" metricValue="5.0" pageId="4" pageNumber="61" unit="m" value="500.0">500 m</quantity>
|
||
(
|
||
<bibRefCitation id="EFE94B7BFFBF786C1BFAF9B7FCE3F9D7" author="Suarez" box="[738,891,1592,1618]" pageId="4" pageNumber="62" refString="Suarez, H. (2006) New species of freshwater crab from Venezuela and redescription of Microthelphusa rodriguezi Pretzmann, 1968 (Brachyura: Pseudothelphusoidea: Pseudothelphusidae). Journal of Crustacean Biology, 26 (2), 242 - 247." type="journal article" year="2006">Suárez 2006</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="8BC7368AFFBF786D19DEF9D0FDD6FDEF" blockId="4.[151,1437,151,2018]" lastBlockId="5.[151,1436,152,618]" lastPageId="5" lastPageNumber="62" pageId="4" pageNumber="61">
|
||
<emphasis id="B90CEA98FFBF786C19DEF9D0FE16F9FC" bold="true" box="[198,398,1631,1657]" pageId="4" pageNumber="61">Natural history.</emphasis>
|
||
The following is based on the field notes provided by D. Bruce Means. The
|
||
<typeStatus id="54C38828FFBF786C1C2DF9EFFA03F9FF" box="[1333,1435,1632,1658]" pageId="4" pageNumber="61" type="holotype">holotype</typeStatus>
|
||
was collected scuttling around on the deeply humic and leaf-littered floor of a large cloud forest (
|
||
<quantity id="4C809B6FFFBF786C1C30F907FAEEF927" box="[1320,1398,1672,1698]" metricMagnitude="4" metricUnit="m" metricValue="3.1" pageId="4" pageNumber="61" unit="km" value="31.0">31 km</quantity>
|
||
by
|
||
<quantity id="4C809B6FFFBF786C198FF93FFF6FF94F" box="[151,247,1712,1738]" metricMagnitude="4" metricUnit="m" metricValue="1.15" pageId="4" pageNumber="61" unit="km" value="11.5">11.5 km</quantity>
|
||
) on the remote unexplored Wokomung Massif (
|
||
<quantity id="4C809B6FFFBF786C1A3CF93FFC1EF94F" box="[804,902,1712,1738]" metricMagnitude="3" metricUnit="m" metricValue="1.65" pageId="4" pageNumber="61" unit="m" value="1650.0">1,650 m</quantity>
|
||
) a tabletop mountain (
|
||
<emphasis id="B90CEA98FFBF786C1D95F93FFB50F94C" box="[1165,1224,1712,1737]" italics="true" pageId="4" pageNumber="61">tepui</emphasis>
|
||
) in the Pakaraima Mountain range of
|
||
<collectingCountry id="F36F761AFFBF786C1860F957FE4FF977" box="[376,471,1752,1778]" name="Guyana" pageId="4" pageNumber="61">Guyana</collectingCountry>
|
||
. Other larger specimens that were not collected were seen on the banks of a small blackwater stream, and specimens reported on here were collected from land, not water. The Pakaraima Mountains are part of the Precambrian quartzite and sandstone mesas known as the Guayana Highlands (
|
||
<bibRefCitation id="EFE94B7BFFBF786C19B9F8DFFEA8F8EF" author="Huber" box="[161,304,1872,1898]" pageId="4" pageNumber="62" refString="Huber, O. (1995) Geographical and physical features. Pages 1 - 61 in P. E. Berry, B. K. Holst, and K. Yatskievych, eds. Flora of the Venezuelan Guayana, Volume 1: Introduction. Missouri Botanical Garden, St. Louis, MO. 320 pp." type="book chapter" year="1995">Huber 1995</bibRefCitation>
|
||
), a series of
|
||
<emphasis id="B90CEA98FFBF786C18DFF8DFFD95F8EC" box="[455,525,1872,1897]" italics="true" pageId="4" pageNumber="61">tepuis</emphasis>
|
||
found in
|
||
<collectingCountry id="F36F761AFFBF786C1B99F8DFFD64F8EF" box="[641,764,1872,1898]" name="Venezuela" pageId="4" pageNumber="61">Venezuela</collectingCountry>
|
||
, northern
|
||
<collectingCountry id="F36F761AFFBF786C1A6CF8DFFC27F8EF" box="[884,959,1872,1898]" name="Brazil" pageId="4" pageNumber="61">Brazil</collectingCountry>
|
||
, and
|
||
<collectingCountry id="F36F761AFFBF786C1AE6F8DFFBC5F8EF" box="[1022,1117,1872,1898]" name="Guyana" pageId="4" pageNumber="61">Guyana</collectingCountry>
|
||
. Nearby Mt. Roraima was made famous by the book ‘The Lost World’ by Sir Arthur Conan
|
||
<bibRefCitation id="EFE94B7BFFBF786C1AB7F8F7FBC9F817" author="Doyle" box="[943,1105,1912,1938]" pageId="4" pageNumber="62" refString="Doyle, A. C. (1912) The Lost World. Hodder & Stoughton, George H. Doran Company, New York, NY." type="book" year="1912">Doyle (1912)</bibRefCitation>
|
||
. The Wokomung Massif is drained by tributaries of the
|
||
<collectingCountry id="F36F761AFFBF786C18F2F82FFDFBF83F" box="[490,611,1952,1978]" name="Guyana" pageId="4" pageNumber="61">Essequibo</collectingCountry>
|
||
River that flows north into the Caribbean Sea and by the Ireng River that flows south into the Amazon River. The vegetation at the
|
||
<typeStatus id="54C38828FFBF786C1A8DF847FC50F867" box="[917,968,1992,2018]" pageId="4" pageNumber="61">type</typeStatus>
|
||
locality on Wokomung is single-tiered semi-open cloud forest with a canopy of medium height (about
|
||
<quantity id="4C809B6FFFBE786D1A93FF17FC68FF37" box="[907,1008,152,178]" metricMagnitude="1" metricUnit="m" metricValue="1.65" metricValueMax="1.8" metricValueMin="1.5" pageId="5" pageNumber="62" unit="m" value="16.5" valueMax="18.0" valueMin="15.0">15-18 m</quantity>
|
||
) and trees close together. The trees and plant stems are heavily draped with epiphytes (mostly aroids) that are also present on the ground together with spiny palms, and the tree trunks, branches, and lianas in the forest are all covered by a fuzzy, dark green moss. During July when the specimens were collected it rained constantly, with clear skies less than 5% of the time, indicating that this cloud forest is perennially wet. The soil is predominantly humic and is underlain at some depth by sand or indurated sandstone. The cloud forest on the top of this
|
||
<emphasis id="B90CEA98FFBE786D1D99FEEFFB24FEFC" box="[1153,1212,352,377]" italics="true" pageId="5" pageNumber="62">tepui</emphasis>
|
||
is completely surrounded by seasonally dry lowland rainforest, and it is likely that this species will prove to be endemic to this very isolated location. Interestingly, the
|
||
<typeStatus id="54C38828FFBE786D1B62FE3FFD47FE4F" box="[634,735,432,458]" pageId="5" pageNumber="62" type="paratype">paratype</typeStatus>
|
||
of
|
||
<taxonomicName id="4C784D09FFBE786D1A1FFE3FFC1AFE4C" ID-CoL="438FZ" box="[775,898,432,457]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="62" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBE786D1A1FFE3FFC1AFE4C" box="[775,898,432,457]" italics="true" pageId="5" pageNumber="62">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
was regurgitated from the stomach of a large tree frog (
|
||
<taxonomicName id="4C784D09FFBE786D1815FE57FEF4FE74" ID-CoL="7M4S" box="[269,364,472,497]" class="Amphibia" family="Hemiphractidae" genus="Stefania" kingdom="Animalia" order="Anura" pageId="5" pageNumber="62" phylum="Chordata" rank="genus">
|
||
<emphasis id="B90CEA98FFBE786D1815FE57FEF4FE74" box="[269,364,472,497]" italics="true" pageId="5" pageNumber="62">Stefania</emphasis>
|
||
</taxonomicName>
|
||
sp.,
|
||
<taxonomicName id="4C784D09FFBE786D18BDFE57FE6BFE77" ID-CoL="PW" box="[421,499,472,498]" class="Amphibia" higherTaxonomySource="GBIF" kingdom="Animalia" order="Anura" pageId="5" pageNumber="62" phylum="Chordata" rank="order">Anura</taxonomicName>
|
||
:
|
||
<taxonomicName id="4C784D09FFBE786D18E6FE57FDC7FE77" ID-CoL="B9H" box="[510,607,472,498]" class="Amphibia" family="Hylidae" kingdom="Animalia" order="Anura" pageId="5" pageNumber="62" phylum="Chordata" rank="family">Hylidae</taxonomicName>
|
||
:
|
||
<taxonomicName id="4C784D09FFBE786D1B73FE57FCB0FE77" ID-CoL="JNG" box="[619,808,472,498]" class="Amphibia" family="Hemiphractidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Anura" pageId="5" pageNumber="62" phylum="Chordata" rank="subFamily" subFamily="Hemiphractinae">Hemiphractinae</taxonomicName>
|
||
) that was kept overnight in a collecting bag. Several other specimens of these small red crabs were seen (but not collected) crawling around in the litter of the forest floor at night, mostly near the banks of small streams, and it is estimated that
|
||
<taxonomicName id="4C784D09FFBE786D1D44FDA7FB4FFDC4" ID-CoL="438FZ" box="[1116,1239,552,577]" class="Malacostraca" family="Pseudothelphusidae" genus="Microthelphusa" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="62" phylum="Arthropoda" rank="species" species="meansi">
|
||
<emphasis id="B90CEA98FFBE786D1D44FDA7FB4FFDC4" box="[1116,1239,552,577]" italics="true" pageId="5" pageNumber="62">M. meansi</emphasis>
|
||
</taxonomicName>
|
||
may reach carapace widths of about
|
||
<quantity id="4C809B6FFFBE786D1889FDDFFE7CFDEF" box="[401,484,592,618]" metricMagnitude="-2" metricUnit="m" metricValue="3.0" pageId="5" pageNumber="62" unit="mm" value="30.0">30 mm</quantity>
|
||
or more.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |