treatments-xml/data/03/9E/87/039E87EBFFB603677A69EE7C3602FA5B.xml

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<document id="1019B69CE9AD8BC18E2B6BDFAA87617D" ID-DOI="10.11646/zootaxa.1262.1.1" ID-ISSN="1175­5334" ID-Zenodo-Dep="5065350" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1625284806426" checkinUser="felipe" docAuthor="Reed, Sadie K. &amp; Cumberlidge, Neil" docDate="2006" docId="039E87EBFFB603677A69EE7C3602FA5B" docLanguage="en" docName="zt01262p080.pdf" docOrigin="Zootaxa 1262 (1)" docSource="https://biotaxa.org/Zootaxa/article/view/zootaxa.1262.1.1" docStyle="DocumentStyle:8B0D3ECF822058C8413568C103B59429.6:Zootaxa.2001-2006.monograph" docStyleId="8B0D3ECF822058C8413568C103B59429" docStyleName="Zootaxa.2001-2006.monograph" docStyleVersion="6" docTitle="Potamonautes gerdalensis Bott 1955" docType="treatment" docVersion="3" lastPageNumber="139" masterDocId="FFA7FF93FFA703757B61EF603327FFCD" masterDocTitle="Brachyura: Potamoidea: Potamonautidae, Platythelphusidae, Deckeniidae ()" masterLastPageNumber="139" masterPageNumber="1" pageNumber="1" updateTime="1698986792498" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="E9C29EEA40EF03AF4126A718DADB8DD1">Brachyura: Potamoidea: Potamonautidae, Platythelphusidae, Deckeniidae ()</mods:title>
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<mods:namePart id="18C020B3A9A1A0384D3F5E9A2BBB951A">Reed, Sadie K.</mods:namePart>
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<mods:namePart id="5A500B8E89B051BA929289EEB303C385">Cumberlidge, Neil</mods:namePart>
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<treatment id="039E87EBFFB603677A69EE7C3602FA5B" LSID="urn:lsid:plazi:treatment:039E87EBFFB603677A69EE7C3602FA5B" httpUri="http://treatment.plazi.org/id/039E87EBFFB603677A69EE7C3602FA5B" lastPageId="18" pageId="17">
<subSubSection id="C32D6576FFB603647A69EE7C3787FEFB" box="[264,1184,283,310]" pageId="17" type="nomenclature">
<paragraph id="8B8836FDFFB603647A69EE7C3787FEFB" blockId="17.[264,1184,283,310]" box="[264,1184,283,310]" pageId="17">
<emphasis id="B943EAEFFFB603647A69EE7C31C0FEF8" bold="true" box="[264,743,283,310]" pageId="17">
<emphasis id="B943EAEFFFB603647A69EE7C323AFEFB" bold="true" box="[264,285,284,310]" italics="true" pageId="17">2.</emphasis>
<taxonomicName id="4C374D7EFFB603647A44EE7C31C0FEF8" ID-CoL="4M4HD" authority="Bott, 1955" authorityName="Bott" authorityYear="1955" box="[293,743,283,310]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="17" phylum="Arthropoda" rank="species" species="gerdalensis">
<emphasis id="B943EAEFFFB603647A44EE7C3145FEFB" bold="true" box="[293,610,284,310]" italics="true" pageId="17">Potamonautes gerdalensis</emphasis>
<bibRefCitation id="EFA64B0CFFB603647908EE7B31C0FEF8" author="Bott, R." box="[617,743,283,309]" pageId="17" pagination="209 - 352" refId="ref39337" refString="Bott, R. (1955) Die Susswasserkrabben von Afrika (Crust., Decap.) und ihre Stammesgeschichte. Annales du Musee du Congo belge, (Tervuren, Belgique) C-Zoologie, (3,3), 3 (1), 209 - 352." type="journal article" year="1955">Bott, 1955</bibRefCitation>
</taxonomicName>
</emphasis>
(Figs. 1222, 147148, 174, plate II)
</paragraph>
</subSubSection>
<subSubSection id="C32D6576FFB603647A69EE073060FE70" pageId="17" type="reference_group">
<paragraph id="8B8836FDFFB603647A69EE073254FE50" blockId="17.[264,1323,358,446]" pageId="17">
<treatmentCitationGroup id="AB2711D3FFB603647A69EE073254FE50" pageId="17">
<treatmentCitation id="0A9610ECFFB603647A69EE07373CFEB0" author="Bott, R." box="[264,1051,358,382]" page="262" pageId="17" year="1955">
<taxonomicName id="4C374D7EFFB603647A69EE07373CFEB0" ID-CoL="4M4HD" authority="Bott, 1955: 261 - 262" authorityName="Bott" authorityPageNumber="261 - 262" authorityYear="1955" box="[264,1051,358,382]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="17" phylum="Arthropoda" rank="species" species="gerdalensis" subGenus="Gerdalopotamonautes">
<emphasis id="B943EAEFFFB603647A69EE07300AFEB3" box="[264,813,359,382]" italics="true" pageId="17">Potamonautes (Gerdalopotamonautes) gerdalensis</emphasis>
<bibRefCitation id="EFA64B0CFFB603647857EE06373CFEB0" author="Bott, R." box="[822,1051,358,381]" pageId="17" pagination="209 - 352" refId="ref39337" refString="Bott, R. (1955) Die Susswasserkrabben von Afrika (Crust., Decap.) und ihre Stammesgeschichte. Annales du Musee du Congo belge, (Tervuren, Belgique) C-Zoologie, (3,3), 3 (1), 209 - 352." type="journal article" year="1955">Bott, 1955: 261262</bibRefCitation>
</taxonomicName>
</treatmentCitation>
, figs. 34, 82, pl. 13, fig. 3ad.
</treatmentCitationGroup>
</paragraph>
<paragraph id="8B8836FDFFB603647A69EEC73060FE70" blockId="17.[264,1323,358,446]" box="[264,839,422,446]" pageId="17">
<treatmentCitationGroup id="AB2711D3FFB603647A69EEC73060FE70" box="[264,839,422,446]" pageId="17">
<taxonomicName id="4C374D7EFFB603647A69EEC73106FE73" ID-CoL="4M4HD" authorityName="Bott" authorityYear="1955" box="[264,545,423,446]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="17" phylum="Arthropoda" rank="species" species="gerdalensis">
<emphasis id="B943EAEFFFB603647A69EEC73106FE73" box="[264,545,423,446]" italics="true" pageId="17">Potamonautes gerdalensis</emphasis>
</taxonomicName>
<treatmentCitation id="0A9610ECFFB60364795CEEC63064FE70" author="Cumberlidge, N." box="[573,835,422,445]" page="199" pageId="17" year="1998">
<bibRefCitation id="EFA64B0CFFB60364795CEEC63064FE70" author="Cumberlidge, N." box="[573,835,422,445]" pageId="17" pagination="193 - 214" refId="ref40322" refString="Cumberlidge, N. (1998) The African and Madagascan freshwater crabs in the Zoologische Staatssammlung, Munich (Crustacea: Decapoda: Brachyura: Potamoidea). Spixiana, 21 (3), 193 - 214." type="journal article" year="1998">Cumberlidge, 1998: 199</bibRefCitation>
</treatmentCitation>
.
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="C32D6576FFB603647A69EE8E3151FCBC" pageId="17" type="materials_examined">
<paragraph id="8B8836FDFFB603647A69EE8E30CDFD94" blockId="17.[264,1325,494,1881]" pageId="17">
<emphasis id="B943EAEFFFB603647A69EE8E316FFDC5" bold="true" box="[264,584,494,520]" pageId="17">Type material examined:</emphasis>
<materialsCitation id="3B5F3CA0FFB603647935EE8E30C1FD94" collectingDate="1911-01-27" collectionCode="ZSM" country="Tanzania" location="Girdalo" pageId="17" specimenCode="ZSM 1189" specimenCount="3" typeStatus="holotype">
<emphasis id="B943EAEFFFB603647935EE8E31DFFDC5" bold="true" box="[596,760,494,520]" pageId="17">
<collectingCountry id="F320766DFFB603647935EE8E31D4FDC5" box="[596,755,494,520]" name="Tanzania" pageId="17">TANZANIA</collectingCountry>
:
</emphasis>
<location id="8EE86026FFB603647862EE8F3047FDC4" LSID="urn:lsid:plazi:treatment:039E87EBFFB603677A69EE7C3602FA5B:8EE86026FFB603647862EE8F3047FDC4" box="[771,864,495,521]" country="Tanzania" name="Girdalo" pageId="17">Girdalo</location>
, on the border
<locationDeviation id="9A3A2FDFFFB603647F7EEE8F3270FDFC" firstLocation="Tanzania" pageId="17" secondLocation="Kenya">between Tanzania and Kenya</locationDeviation>
, adult male
<typeStatus id="548C885FFFB603647A8CED773174FDFC" box="[493,595,535,561]" pageId="17" type="holotype">holotype</typeStatus>
(cw
<quantity id="4CCF9B18FFB6036479F5ED7731CAFDFC" box="[660,749,535,561]" metricMagnitude="-2" metricUnit="m" metricValue="3.4" pageId="17" unit="mm" value="34.0">34 mm</quantity>
), adult female
<typeStatus id="548C885FFFB6036478C2ED77372FFDFC" box="[931,1032,535,561]" pageId="17" type="paratype">paratype</typeStatus>
(cw
<quantity id="4CCF9B18FFB603647F29ED773790FDFC" box="[1096,1207,535,561]" metricMagnitude="-2" metricUnit="m" metricValue="2.93" pageId="17" unit="mm" value="29.3">29.3 mm</quantity>
), juvenile
<typeStatus id="548C885FFFB603647A69ED5F324AFD94" box="[264,365,575,601]" pageId="17" type="paratype">paratype</typeStatus>
(cw
<quantity id="4CCF9B18FFB603647AC9ED5F3132FD94" box="[424,533,575,601]" metricMagnitude="-2" metricUnit="m" metricValue="2.21" pageId="17" unit="mm" value="22.1">22.1 mm</quantity>
),
<date id="FF89103DFFB603647948ED5F31B0FD94" box="[553,663,575,601]" pageId="17" value="1911-01-27">
<collectingDate id="EFCDE9D5FFB603647948ED5F31B0FD94" box="[553,663,575,601]" pageId="17" value="1911-01-27">27.i.1911</collectingDate>
</date>
(Kattwinkel) (
<specimenCode id="DB919E86FFB603647822ED5F30EDFD94" box="[835,970,575,601]" collectionCode="ZSM" country="Germany" httpUri="http://grbio.org/cool/4b7r-7sec" name="Bavarian State Collection of Zoology" pageId="17" type="Museum">ZSM 1189</specimenCode>
/1)
</materialsCitation>
.
</paragraph>
<paragraph id="8B8836FDFFB603647A59ED063151FCBC" blockId="17.[264,1325,494,1881]" pageId="17">
<emphasis id="B943EAEFFFB603647A59ED06319BFD4D" bold="true" box="[312,700,614,640]" pageId="17">Additional material examined:</emphasis>
<materialsCitation id="3B5F3CA0FFB6036479A7ED063293FD34" collectingDate="1960-09-23" collectionCode="R, NMU" collectorName="B. Highton" country="Kenya" location="Kitare River" municipality="Nyanza Province" pageId="17" specimenCode="TRW1960.05" specimenCount="16" specimenCount-female="13" specimenCount-juvenile="3" stateProvince="Kisii">
<emphasis id="B943EAEFFFB6036479A7ED063010FD4D" bold="true" box="[710,823,614,640]" pageId="17">
<collectingCountry id="F320766DFFB6036479A7ED063015FD4D" box="[710,818,614,640]" name="Kenya" pageId="17">KENYA</collectingCountry>
:
</emphasis>
<collectingMunicipality id="6BECAC87FFB60364785EED07372AFD4C" box="[831,1037,615,641]" pageId="17">Nyanza Province</collectingMunicipality>
,
<collectingRegion id="49F3F81FFFB603647F7AED073770FD4C" box="[1051,1111,615,641]" country="Kenya" name="Kisii" pageId="17">Kisii</collectingRegion>
, upper reaches of the
<location id="8EE86026FFB603647A52EDEF32E1FD64" LSID="urn:lsid:plazi:treatment:039E87EBFFB603677A69EE7C3602FA5B:8EE86026FFB603647A52EDEF32E1FD64" box="[307,454,655,681]" country="Kenya" municipality="Nyanza Province" name="Kitare River" pageId="17" stateProvince="Kisii">Kitare River</location>
, male (cw
<quantity id="4CCF9B18FFB603647924EDEF3195FD64" box="[581,690,655,681]" metricMagnitude="-2" metricUnit="m" metricValue="3.63" pageId="17" unit="mm" value="36.3">36.3 mm</quantity>
),
<specimenCount id="9D31FD74FFB6036479A7EDEF301CFD64" box="[710,827,655,681]" pageId="17" type="female">13 female</specimenCount>
subadults and juveniles (cw 10.2 to cw
<quantity id="4CCF9B18FFB603647E71EDEF321DFD1C" metricMagnitude="-2" metricUnit="m" metricValue="3.4" pageId="17" unit="mm" value="34.0">34 mm</quantity>
),
<specimenCount id="9D31FD74FFB603647A35EDD732E9FD1C" box="[340,462,695,721]" pageId="17" type="juvenile">3 juvenile</specimenCount>
males (cw 17.9 to cw
<quantity id="4CCF9B18FFB60364799DEDD7304BFD1C" box="[764,876,695,721]" metricMagnitude="-2" metricUnit="m" metricValue="2.05" pageId="17" unit="mm" value="20.5">20.5 mm</quantity>
)
<date id="FF89103DFFB6036478E0EDD730D8FD1C" box="[897,1023,695,721]" pageId="17" value="1960-09-23">
<collectingDate id="EFCDE9D5FFB6036478E0EDD730D8FD1C" box="[897,1023,695,721]" pageId="17" value="1960-09-23">23.ix.1960</collectingDate>
</date>
(
<collectionCode id="ED26AE38FFB603647F77EDD7370AFD1C" box="[1046,1069,695,721]" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="17">R</collectionCode>
.
<collectorName id="26C2532BFFB603647F5EEDD737EEFD1C" box="[1087,1225,695,721]" pageId="17">B. Highton</collectorName>
) (
<collectionCode id="ED26AE38FFB603647F87EDD7360BFD1C" box="[1254,1324,695,721]" pageId="17">NMU</collectionCode>
<specimenCode id="DB919E86FFB603647A69EDBF328BFD34" box="[264,428,735,761]" collectionCode="NMU" pageId="17">TRW1960.05</specimenCode>
)
</materialsCitation>
;
<materialsCitation id="3B5F3CA0FFB603647AA4EDBF3155FCBC" collectingDate="1959-12-16" collectionCode="BMNH" collectorName="J. McMahon" country="Kenya" county="Nyanza Province" location="Kodera" municipality="Kisu" pageId="17" specimenCount="1">
<collectingCounty id="62E94E71FFB603647AA4EDBF31B2FD34" box="[453,661,735,761]" pageId="17">Nyanza Province</collectingCounty>
,
<collectingMunicipality id="6BECAC87FFB6036479C4EDBF31F8FD34" box="[677,735,735,761]" pageId="17">Kisu</collectingMunicipality>
, near
<location id="8EE86026FFB60364784FEDBF30A0FD34" LSID="urn:lsid:plazi:treatment:039E87EBFFB603677A69EE7C3602FA5B:8EE86026FFB60364784FEDBF30A0FD34" box="[814,903,735,761]" country="Kenya" county="Nyanza Province" municipality="Kisu" name="Kodera" pageId="17">Kodera</location>
,
<location id="8EE86026FFB6036478F9EDBF30C4FD34" LSID="urn:lsid:plazi:treatment:039E87EBFFB603677A69EE7C3602FA5B:8EE86026FFB6036478F9EDBF30C4FD34" box="[920,995,735,761]" country="Kenya" county="Nyanza Province" municipality="Kisu" name="Sauda" pageId="17">Sauda</location>
,
<location id="8EE86026FFB603647892EDBF371BFD34" LSID="urn:lsid:plazi:treatment:039E87EBFFB603677A69EE7C3602FA5B:8EE86026FFB603647892EDBF371BFD34" box="[1011,1084,735,761]" country="Kenya" county="Nyanza Province" municipality="Kisu" name="Kitare" pageId="17">Kitare</location>
and
<location id="8EE86026FFB603647F1FEDBF360EFD34" LSID="urn:lsid:plazi:treatment:039E87EBFFB603677A69EE7C3602FA5B:8EE86026FFB603647F1FEDBF360EFD34" box="[1150,1321,735,761]" country="Kenya" county="Nyanza Province" municipality="Kisu" name="Awash Rivers" pageId="17">Awash Rivers</location>
, subadult male adult (cw
<quantity id="4CCF9B18FFB603647955EC673184FCEC" box="[564,675,775,801]" metricMagnitude="-2" metricUnit="m" metricValue="3.18" pageId="17" unit="mm" value="31.8">31.8 mm</quantity>
), subadult male (cw
<quantity id="4CCF9B18FFB6036478C0EC6730DCFCEC" box="[929,1019,775,801]" metricMagnitude="-2" metricUnit="m" metricValue="2.6" pageId="17" unit="mm" value="26.0">26 mm</quantity>
), subadult male (cw
<quantity id="4CCF9B18FFB603647F98EC67321DFC84" metricMagnitude="-2" metricUnit="m" metricValue="2.46" pageId="17" unit="mm" value="24.6">24.6 mm</quantity>
), subadult female (cw
<quantity id="4CCF9B18FFB603647922EC4F3197FC84" box="[579,688,815,841]" metricMagnitude="-2" metricUnit="m" metricValue="2.95" pageId="17" unit="mm" value="29.5">29.5 mm</quantity>
), subadult female (cw
<quantity id="4CCF9B18FFB6036478D8EC4F3737FC84" box="[953,1040,815,841]" metricMagnitude="-2" metricUnit="m" metricValue="2.7" pageId="17" unit="mm" value="27.0">27 mm</quantity>
),
<date id="FF89103DFFB603647F45EC4F378DFC84" box="[1060,1194,815,841]" pageId="17" value="1959-12-16">
<collectingDate id="EFCDE9D5FFB603647F45EC4F378DFC84" box="[1060,1194,815,841]" pageId="17" value="1959-12-16">16.xii.1959</collectingDate>
</date>
(
<collectorName id="26C2532BFFB603647FDAEC4F3212FCBC" pageId="17">J. McMahon</collectorName>
) (
<collectionCode id="ED26AE38FFB603647A2CEC373280FCBC" box="[333,423,855,881]" pageId="17">BMNH</collectionCode>
1951.10.31.15)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C32D6576FFB603647A59EC1E37FEF98C" pageId="17" type="diagnosis">
<paragraph id="8B8836FDFFB603647A59EC1E32D1F9D4" blockId="17.[264,1325,494,1881]" pageId="17">
<emphasis id="B943EAEFFFB603647A59EC1E3290FC55" bold="true" box="[312,439,894,920]" pageId="17">Diagnosis.</emphasis>
Postfrontal crest sharp­edged, completely crossing carapace; exorbital tooth low, epibranchial tooth absent; anterolateral margin behind epibranchial tooth faintly granulated, curving inward for short distance over branchial region of carapace; suborbital region of carapace sidewall smooth, subhepatic, pterygostomial regions of carapace sidewalls with fields of granules, short carinae; ischium of third maxilliped with vertical sulcus; sternal sulcus s3/s4 wide, deep, completely crossing sternum, touching anterior margin of sternoabdominal cavity; episternal sulcus s4/e4 missing, s5/e5 incomplete, s6/ e6, s7/e7 complete; first carpal tooth of P1 large, pointed, second carpal tooth granular, with several small granules behind it; merus of cheliped elongated, dactylus arched, enclosing oval interspace; basal part of terminal article of gonopod 1 thickened; lateral, medial folds low, even­sized, separated by broad seminal groove; medial fold wider (but not higher) than lateral fold; tip of terminal article of gonopod 1 short, hook­shaped, inwardly curved; distal margin of subterminal segment highest on lateral side (forming rounded shoulder), lowest on medial side; dorsal membrane on lateral side very broad, clearly separating terminal article from subterminal segment; dorsal membrane on medial side narrow at boundary between segments; groove for gonopod 2 on subterminal segment of gonopod 1 broad.
</paragraph>
<paragraph id="8B8836FDFFB603647A59E94637FEF98C" blockId="17.[264,1325,494,1881]" box="[312,1241,1574,1601]" pageId="17">
<emphasis id="B943EAEFFFB603647A59E9463256F98D" bold="true" box="[312,369,1574,1600]" pageId="17">Size.</emphasis>
Medium to large, with a pubertal molt occurring between cws
<quantity id="4CCF9B18FFB603647F32E94737F2F98C" box="[1107,1237,1575,1601]" metricMagnitude="-2" metricUnit="m" metricValue="3.45" metricValueMax="3.5" metricValueMin="3.4" pageId="17" unit="mm" value="34.5" valueMax="35.0" valueMin="34.0">3435 mm</quantity>
.
</paragraph>
</subSubSection>
<subSubSection id="C32D6576FFB603677A59E92E31C3FEFB" lastPageId="18" pageId="17" type="description">
<paragraph id="8B8836FDFFB603677A59E92E31C3FEFB" blockId="17.[264,1325,494,1881]" lastBlockId="18.[264,1325,284,1430]" lastPageId="18" pageId="17">
<emphasis id="B943EAEFFFB603647A59E92E3290F9A5" bold="true" box="[312,439,1614,1640]" pageId="17">Variation.</emphasis>
The chelipeds of
<taxonomicName id="4C374D7EFFB6036479FCE92F3062F9A5" authorityName="Bott" authorityYear="1955" box="[669,837,1615,1640]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="17" phylum="Arthropoda" rank="species" species="gerdalensis">
<emphasis id="B943EAEFFFB6036479FCE92F3062F9A5" box="[669,837,1615,1640]" italics="true" pageId="17">P. gerdalensis</emphasis>
</taxonomicName>
exhibit allometric growth. Heterochely becomes obvious in adult males as well as adult females, though to a lesser degree. The dactylus of the major cheliped in younger crabs is straight, and when closed its teeth completely meet those of the fixed finger. In older crabs the dactylus does not meet the fixed finger when closed. The degree of arching of the dactylus of the major cheliped of adult males varies and the enclosed interspace varies from narrow to oval. The sulcus of the ischium of the third maxilliped is always present, but varies from deepin subadults (Kisu specimens) to weak (
<typeStatus id="548C885FFFB503677A9FEE7C314FFEFB" box="[510,616,284,310]" pageId="18" type="holotype">holotype</typeStatus>
) in adults.
</paragraph>
</subSubSection>
<subSubSection id="C32D6576FFB503677A59EE233267FE33" pageId="18" type="materials_examined">
<paragraph id="8B8836FDFFB503677A59EE233267FE33" blockId="18.[264,1325,284,1430]" pageId="18">
<emphasis id="B943EAEFFFB503677A59EE2332FAFE90" bold="true" box="[312,477,323,349]" pageId="18">
<typeStatus id="548C885FFFB503677A59EE233252FE90" box="[312,373,323,349]" pageId="18">Type</typeStatus>
locality.
</emphasis>
Girdalo
<collectingCountry id="F320766DFFB503677924EE243196FE93" box="[581,689,324,350]" name="Tanzania" pageId="18">Tanzania</collectingCountry>
, on the border between
<collectingCountry id="F320766DFFB5036778A9EE243716FE93" box="[968,1073,324,350]" name="Tanzania" pageId="18">Tanzania</collectingCountry>
and
<collectingCountry id="F320766DFFB503677F0BEE24379DFE93" box="[1130,1210,324,350]" name="Kenya" pageId="18">Kenya</collectingCountry>
. Unfortunately, when
<bibRefCitation id="EFA64B0CFFB503677AC2EE0C310BFE4B" author="Bott, R." box="[419,556,364,390]" pageId="18" pagination="209 - 352" refId="ref39337" refString="Bott, R. (1955) Die Susswasserkrabben von Afrika (Crust., Decap.) und ihre Stammesgeschichte. Annales du Musee du Congo belge, (Tervuren, Belgique) C-Zoologie, (3,3), 3 (1), 209 - 352." type="journal article" year="1955">Bott (1955)</bibRefCitation>
established the species
<taxonomicName id="4C374D7EFFB503677825EE0C30C0FE48" authorityName="Bott" authorityYear="1955" box="[836,999,364,389]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="species" species="gerdalensis">
<emphasis id="B943EAEFFFB503677825EE0C30C0FE48" box="[836,999,364,389]" italics="true" pageId="18">P. gerdalensis</emphasis>
</taxonomicName>
and the subgenus
<taxonomicName id="4C374D7EFFB503677FA1EE0C328BFE60" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="subGenus" subGenus="Gerdalopotamonautes">
<emphasis id="B943EAEFFFB503677FA1EE0C328BFE60" italics="true" pageId="18">Gerdalopotamonautes</emphasis>
</taxonomicName>
he adopted the spelling based on the
<typeStatus id="548C885FFFB50367780DEEF430B9FE63" box="[876,926,404,430]" pageId="18">type</typeStatus>
locality of Gerdalo. Today, this location is known in gazetteers as Girdalo, while the spelling Gerdalo is not recoverable.
</paragraph>
</subSubSection>
<subSubSection id="C32D6576FFB503677A59ED6B304BFD0B" pageId="18" type="distribution">
<paragraph id="8B8836FDFFB503677A59ED6B304BFD0B" blockId="18.[264,1325,284,1430]" pageId="18">
<emphasis id="B943EAEFFFB503677A59ED6B32FFFDE8" bold="true" box="[312,472,523,549]" pageId="18">Distribution.</emphasis>
<collectingRegion id="49F3F81FFFB503677A84ED6C3104FDEB" box="[485,547,524,550]" country="Tanzania" name="Mara" pageId="18">Mara</collectingRegion>
and
<collectingRegion id="49F3F81FFFB503677908ED6C319AFDEB" box="[617,701,524,550]" country="Tanzania" name="Arusha" pageId="18">Arusha</collectingRegion>
regions of
<collectingCountry id="F320766DFFB503677837ED6C3098FDEB" box="[854,959,524,550]" name="Tanzania" pageId="18">Tanzania</collectingCountry>
and the Nyanza Province of
<collectingCountry id="F320766DFFB503677A69ED54327FFD83" box="[264,344,564,590]" name="Kenya" pageId="18">Kenya</collectingCountry>
. The NMU collection contains
<specimenCount id="9D31FD74FFB503677984ED5430BFFD83" box="[741,920,564,590]" pageId="18" type="generic">two specimens</specimenCount>
of
<taxonomicName id="4C374D7EFFB5036778ABED543754FD80" authorityName="Bott" authorityYear="1955" box="[970,1139,564,589]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="species" species="gerdalensis">
<emphasis id="B943EAEFFFB5036778ABED543754FD80" box="[970,1139,564,589]" italics="true" pageId="18">P. gerdalensis</emphasis>
</taxonomicName>
both from the Nyanza Province of
<collectingCountry id="F320766DFFB503677A9DED3C316FFDBB" box="[508,584,604,630]" name="Kenya" pageId="18">Kenya</collectingCountry>
that represent the only new material known since the original description of this species in 1955. These records extend the range of this species northwest along the border between
<collectingCountry id="F320766DFFB503677914EDCC31F9FD0B" box="[629,734,684,710]" name="Tanzania" pageId="18">Tanzania</collectingCountry>
and
<collectingCountry id="F320766DFFB503677879EDCC304FFD0B" box="[792,872,684,710]" name="Kenya" pageId="18">Kenya</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="C32D6576FFB503677A59EDB43602FA5B" pageId="18" type="discussion">
<paragraph id="8B8836FDFFB503677A59EDB430A4FB03" blockId="18.[264,1325,284,1430]" pageId="18">
<emphasis id="B943EAEFFFB503677A59EDB43296FD23" bold="true" box="[312,433,724,750]" pageId="18">Remarks.</emphasis>
This material was identified following direct examination by one of us (NC) of the
<typeStatus id="548C885FFFB503677AF8ED9C32D8FCDB" box="[409,511,764,790]" pageId="18" type="holotype">holotype</typeStatus>
(an adult male, cw
<quantity id="4CCF9B18FFB50367798DED9C3066FCDB" box="[748,833,764,790]" metricMagnitude="-2" metricUnit="m" metricValue="3.4" pageId="18" unit="mm" value="34.0">34 mm</quantity>
) and
<typeStatus id="548C885FFFB5036778E5ED9C30D0FCDB" box="[900,1015,764,790]" pageId="18" type="paratype">paratypes</typeStatus>
, an adult female (cw
<quantity id="4CCF9B18FFB503677F99ED9C3210FCF3" metricMagnitude="-2" metricUnit="m" metricValue="2.93" pageId="18" unit="mm" value="29.3">29.3 mm</quantity>
) and a juvenile (cw
<quantity id="4CCF9B18FFB503677944EC4431B5FCF3" box="[549,658,804,830]" metricMagnitude="-2" metricUnit="m" metricValue="2.21" pageId="18" unit="mm" value="22.1">22.1 mm</quantity>
),
<date id="FF89103DFFB5036779C7EC443033FCF3" box="[678,788,804,830]" pageId="18" value="1911-01-27">27.i.1911</date>
(Kattwinkel) (ZSM 1189/1), as well as
<bibRefCitation id="EFA64B0CFFB503677F86EC443271FCAB" author="Bott, R." pageId="18" pagination="209 - 352" refId="ref39337" refString="Bott, R. (1955) Die Susswasserkrabben von Afrika (Crust., Decap.) und ihre Stammesgeschichte. Annales du Musee du Congo belge, (Tervuren, Belgique) C-Zoologie, (3,3), 3 (1), 209 - 352." type="journal article" year="1955">Botts (1955)</bibRefCitation>
photographs and illustrations of the
<typeStatus id="548C885FFFB50367786DEC2C3050FCAB" box="[780,887,844,870]" pageId="18" type="holotype">holotype</typeStatus>
.
<bibRefCitation id="EFA64B0CFFB5036778E2EC2C372AFCAB" author="Bott, R." box="[899,1037,844,870]" pageId="18" pagination="209 - 352" refId="ref39337" refString="Bott, R. (1955) Die Susswasserkrabben von Afrika (Crust., Decap.) und ihre Stammesgeschichte. Annales du Musee du Congo belge, (Tervuren, Belgique) C-Zoologie, (3,3), 3 (1), 209 - 352." type="journal article" year="1955">Bott (1955)</bibRefCitation>
erected the subgenus
<emphasis id="B943EAEFFFB503677E74EC2C3107FC40" italics="true" pageId="18">
P. (
<taxonomicName id="4C374D7EFFB503677A71EC143130FC40" box="[272,535,884,909]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="subGenus" subGenus="Gerdalopotamonautes">Gerdalopotamonautes</taxonomicName>
)
</emphasis>
to contain a single species,
<taxonomicName id="4C374D7EFFB50367780CEC143736FC40" authorityName="Bott" authorityYear="1955" box="[877,1041,884,909]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="species" species="gerdalensis">
<emphasis id="B943EAEFFFB50367780CEC143736FC40" box="[877,1041,884,909]" italics="true" pageId="18">P. gerdalensis</emphasis>
</taxonomicName>
; and although
<bibRefCitation id="EFA64B0CFFB503677FA3EC1432BEFC7B" author="Cumberlidge, N." pageId="18" pagination="193 - 214" refId="ref40322" refString="Cumberlidge, N. (1998) The African and Madagascan freshwater crabs in the Zoologische Staatssammlung, Munich (Crustacea: Decapoda: Brachyura: Potamoidea). Spixiana, 21 (3), 193 - 214." type="journal article" year="1998">Cumberlidge (1998)</bibRefCitation>
accepted the validity of the species, he did not recognize the subgenus, and this opinion is followed here.
<taxonomicName id="4C374D7EFFB50367791AECA43093FC10" authorityName="Bott" authorityYear="1955" box="[635,948,964,989]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="species" species="gerdalensis">
<emphasis id="B943EAEFFFB50367791AECA43093FC10" box="[635,948,964,989]" italics="true" pageId="18">Potamonautes gerdalensis</emphasis>
</taxonomicName>
is morphologically close to
<taxonomicName id="4C374D7EFFB503677E74ECA43108FBCB" authority="(Bouvier, 1921)" baseAuthorityName="Bouvier" baseAuthorityYear="1921" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="species" species="alluaudi">
<emphasis id="B943EAEFFFB503677E74ECA4324EFBC8" italics="true" pageId="18">P. alluaudi</emphasis>
(
<bibRefCitation id="EFA64B0CFFB503677A1AEC8C3102FBCB" author="Bouvier, E. L." box="[379,549,1004,1030]" pageId="18" pagination="23 - 62" refId="ref39681" refString="Bouvier, E. L. (1921) Decapoda. In: Voyage de Ch. Alluaud et R. Jeannel en Afrique orientale (1911 - 1912). Resultats scientifiques, Crustaces, III (Paris), 23 - 62." type="book chapter" year="1921">Bouvier, 1921</bibRefCitation>
)
</taxonomicName>
from Mount
<collectingCountry id="F320766DFFB5036779B0EC8C303AFBCB" box="[721,797,1004,1030]" name="Kenya" pageId="18">Kenya</collectingCountry>
and the Aberdares in
<collectingCountry id="F320766DFFB503677F46EC8C375FFBCB" box="[1063,1144,1004,1030]" name="Kenya" pageId="18">Kenya</collectingCountry>
: both are large species, both have a sharp­edged complete postfrontal crest, a low exorbital tooth, a missing epibranchial tooth and a rounded shoulder on the distal medial margin of the subterminal segment of gonopod 1. However, these two taxa can be clearly distinguished by the form of the terminal article of the first gonopod (the tip of the terminal article is sharply upcurved in
<taxonomicName id="4C374D7EFFB503677AFAEBD4311AFB00" authorityName="Bott" authorityYear="1955" box="[411,573,1204,1229]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="species" species="gerdalensis">
<emphasis id="B943EAEFFFB503677AFAEBD4311AFB00" box="[411,573,1204,1229]" italics="true" pageId="18">P.gerdalensis</emphasis>
</taxonomicName>
and straight in
<taxonomicName id="4C374D7EFFB503677995EBD43055FB00" baseAuthorityName="Bouvier" baseAuthorityYear="1921" box="[756,882,1204,1229]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="species" species="alluaudi">
<emphasis id="B943EAEFFFB503677995EBD43055FB00" box="[756,882,1204,1229]" italics="true" pageId="18">P. alluaudi</emphasis>
</taxonomicName>
).
</paragraph>
<paragraph id="8B8836FDFFB503677A59EBBC3602FA5B" blockId="18.[264,1325,284,1430]" pageId="18">
<emphasis id="B943EAEFFFB503677A59EBBC300BFB3B" bold="true" box="[312,812,1244,1270]" pageId="18">Natural history and conservation status.</emphasis>
The conservation status of
<taxonomicName id="4C374D7EFFB503677F0CEBBC3637FB38" authorityName="Bott" authorityYear="1955" box="[1133,1296,1244,1269]" class="Malacostraca" family="Potamonautidae" genus="Potamonautes" kingdom="Animalia" order="Decapoda" pageId="18" phylum="Arthropoda" rank="species" species="gerdalensis">
<emphasis id="B943EAEFFFB503677F0CEBBC3637FB38" box="[1133,1296,1244,1269]" italics="true" pageId="18">P. gerdalensis</emphasis>
</taxonomicName>
is categorized as vulnerable (VU) (
<tableCitation id="C6B50346FFB5036779E9EA6431C4FAD3" box="[648,739,1284,1310]" captionStart="TABLE 4" captionStartId="16.[264,352,483,507]" captionText="TABLE 4. Checklist of native Tanzanian freshwater crabs and their conservation status. Conservation status abbreviations: LC = Least Concern, NT = Near Threatened, VU = Vulnerable, EN = Endangered, for other abbreviations see IUCN (2004), Red List ver. 3.1 (2001)." pageId="18">Table 4</tableCitation>
) because it has a narrow range of occurrence and a restricted area of occupancy that are both below the thresholds for vulnerable (VU) (
<bibRefCitation id="EFA64B0CFFB503677A71EA343286FAA3" author="IUCN" box="[272,417,1364,1390]" pageId="18" refId="ref41458" refString="IUCN (2004) IUCN Red List of Threatened Species. &lt;www. iucnredlist. org&gt;." type="book" year="2004">IUCN 2004</bibRefCitation>
). Its population is estimated to be low based on indirect measures such as the lack of recent collections of specimens and its poor representation in museum collections.
</paragraph>
</subSubSection>
</treatment>
</document>