treatments-xml/data/49/11/87/4911878AFFEFFFCBA506F8D0FE9005EC.xml

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<mods:title id="B53C5EF9A93A584BAC0680ADBD7542B3">A new genus of Tainisopidae fam. nov. (Crustacea: Isopoda) from the Pilbara, Western Australia</mods:title>
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<mods:date id="07AC6EC24A52C8109298304076561C8D">2003</mods:date>
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<treatment id="4911878AFFEFFFCBA506F8D0FE9005EC" ID-DOI="http://doi.org/10.5281/zenodo.3508981" ID-GBIF-Taxon="119331809" ID-Zenodo-Dep="3508981" LSID="urn:lsid:plazi:treatment:4911878AFFEFFFCBA506F8D0FE9005EC" httpUri="http://treatment.plazi.org/id/4911878AFFEFFFCBA506F8D0FE9005EC" lastPageId="12" lastPageNumber="12" pageId="6" pageNumber="7">
<subSubSection id="89A26517FFEFFFC1A506F8D0FDAE031C" box="[264,631,1804,1830]" pageId="6" pageNumber="7" type="nomenclature">
<paragraph id="C107369CFFEFFFC1A506F8D0FDAE031C" blockId="6.[264,631,1804,1830]" box="[264,631,1804,1830]" pageId="6" pageNumber="7">
<heading id="9A4F81F0FFEFFFC1A506F8D0FDAE031C" bold="true" box="[264,631,1804,1830]" fontSize="11" level="1" pageId="6" pageNumber="7" reason="1">
<emphasis id="F3CCEA8EFFEFFFC1A506F8D0FDAE031C" bold="true" box="[264,631,1804,1830]" pageId="6" pageNumber="7">
<taxonomicName id="06B84D1FFFEFFFC1A506F8D0FEA4031C" ID-CoL="7PX54" box="[264,381,1804,1830]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="genus" status="gen. nov.">
<emphasis id="F3CCEA8EFFEFFFC1A506F8D0FEA4031C" bold="true" box="[264,381,1804,1830]" italics="true" pageId="6" pageNumber="7">Pygolabis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="E8FF57F5FFEFFFC1A58BF8D0FE2A031C" box="[389,499,1804,1830]" pageId="6" pageNumber="7" rank="genus">gen. nov.</taxonomicNameLabel>
(
<figureCitation id="59832A19FFEFFFC1A60CF8D0FDB7031C" box="[514,622,1804,1830]" captionStart-0="FIGURE 1" captionStart-1="FIGURE 2" captionStart-2="FIGURE 3" captionStart-3="FIGURE 4" captionStart-4="FIGURE 5" captionStart-5="FIGURE 6" captionStart-6="FIGURE 7" captionStartId-0="7.[264,367,1510,1534]" captionStartId-1="7.[264,367,1734,1758]" captionStartId-2="10.[264,367,1767,1791]" captionStartId-3="11.[264,368,1628,1652]" captionStartId-4="14.[264,368,284,308]" captionStartId-5="16.[264,368,284,308]" captionStartId-6="17.[264,367,1752,1776]" captionTargetBox-0="[264,1322,315,1485]" captionTargetBox-2="[264,1322,449,1739]" captionTargetBox-3="[264,1322,321,1602]" captionTargetBox-6="[270,1316,313,1741]" captionTargetId-0="figure@7.[264,1322,315,1485]" captionTargetId-2="figure@10.[264,1322,449,1740]" captionTargetId-3="figure@11.[264,1322,321,1602]" captionTargetId-6="figure@17.[270,1317,306,1744]" captionTargetPageId-0="7" captionTargetPageId-2="10" captionTargetPageId-3="11" captionTargetPageId-6="17" captionText-0="FIGURE 1. Pygolabis humphreysi gen. nov., sp. nov (holotype male WAM C 33562, light micrographs): A, C. Body, dorsal and lateral; B, D. Head, dorsal and lateral. (scale bars 1 mm)" captionText-1="FIGURE 2. Pygolabis humphreysi (paratype male AM P 64993, SEM of antennae and mandibles): A­B. Antenna, left ventral and articles 1 ­ 3 lateral; C­D. Antennula, left ventral and rudimentary second flagellum medial; E­F. Left mandible, ventral and medial; G­H. Right mandible, medial and enlargement of palp articles 2 ­ 3 ventral. (scale bars: A, C 1 mm; E, H 05. mm; F, G 0.1 mm)" captionText-2="FIGURE 3. Pygolabis humphreysi (paratype male AM P 64993, SEM of mouthparts): A. Paragnaths, ventral; B­C. Maxillula, right ventral and lateral lobe medial; D. Maxilla, right ventral; E­F. Maxilliped, right ventral and endite medial (scale bars A­B, D­E 0.1 mm)" captionText-3="FIGURE 4. Pygolabis humphreysi (paratype male AM P 64993, SEM of anterior pereopods): A­B. Pereopod I, left lateral and enlargement of palm; C­E. Pereopod II, right lateral and enlargements of distal podomeres; F, Pereopod III, left lateral. (scale bars A, C, F 1 mm)" captionText-4="FIGURE 5. Pygolabis humphreysi (paratype male AM P 64993, SEM of posterior pereopods): A­ B. Pereopod IV, left posterior and ventral enlargement of coxa basis; C. Pereopod V, left lateral; D­ E. Pereopod VI, left lateral and medial enlargement of propodus dactylus showing articular plate; F­G. Pereopod VII and pereonite 7, left anterolateral oblique and lateral enlargement of coxal­tergal margin. (scale bar A, C, D, F 1 mm)" captionText-5="FIGURE 6. Pygolabis humphreysi (paratype male AM P 64993, SEM of pleon, appendix masculina and uropods): A. Pereonite 7, penes, pleonites 1 ­ 2 and pleopods I, ventral. B­D, pleopod II appendix masculina and protopod ventral, distal tip enlargement dorsal and lateral; E­H, Pleotelson and left uropod, dorsal, ventral, distal enlargement dorsal and ventral. (scale bars: A, E­F 1 mm, B 0.1 mm)" captionText-6="FIGURE 7. Pygolabis humphreysi (light micrographs: A­B, D­E, G­H, paratype female, AM P 64992; C. holotype male, WAM C 33562; F. paratype male, AM P 64993): A­B, D­E. female pleopods I­IV, right dorsal, lateral view of endopod III lobes indicated with arrows in D; C. male pleopod II, left dorsal; F. appendix masculina, left ventral; G­H. female pleopod V, right dorsal and ventral. (scale bar A­C, D­E, G­H 1 mm, shown in G)" httpUri-0="https://zenodo.org/record/156262/files/figure.png" httpUri-2="https://zenodo.org/record/156263/files/figure.png" httpUri-3="https://zenodo.org/record/156264/files/figure.png" httpUri-6="https://zenodo.org/record/156265/files/figure.png" pageId="6" pageNumber="7">Figs. 1­7</figureCitation>
)
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="89A26517FFEFFFC1A506F88AFC34034B" box="[264,1005,1878,1905]" pageId="6" pageNumber="7" type="materials_examined">
<paragraph id="C107369CFFEFFFC1A506F88AFC34034B" blockId="6.[264,1005,1878,1905]" box="[264,1005,1878,1905]" pageId="6" pageNumber="7">
<emphasis id="F3CCEA8EFFEFFFC1A506F88AFE76034A" bold="true" box="[264,431,1878,1904]" pageId="6" pageNumber="7">
<typeStatus id="1E03883EFFEFFFC1A506F88AFE9C034A" box="[264,325,1878,1904]" pageId="6" pageNumber="7">Type</typeStatus>
Species.
</emphasis>
<taxonomicName id="06B84D1FFFEFFFC1A5B9F88BFD63034A" box="[439,698,1879,1904]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="humphreysi" status="sp. nov.">
<emphasis id="F3CCEA8EFFEFFFC1A5B9F88BFD63034A" box="[439,698,1879,1904]" italics="true" pageId="6" pageNumber="7">Pygolabis humphreysi</emphasis>
</taxonomicName>
<emphasis id="F3CCEA8EFFEFFFC1A6CCF88AFCFE034A" bold="true" box="[706,807,1878,1904]" pageId="6" pageNumber="7">
<taxonomicNameLabel id="E8FF57F5FFEFFFC1A6CCF88AFCF9034A" box="[706,800,1878,1904]" pageId="6" pageNumber="7" rank="species">sp. nov.</taxonomicNameLabel>
,
</emphasis>
here designated.
</paragraph>
</subSubSection>
<caption id="95C76614FFEEFFC0A506FA3AFB61021A" httpUri="https://zenodo.org/record/156262/files/figure.png" pageId="7" pageNumber="8" targetBox="[264,1322,315,1485]" targetPageId="7">
<paragraph id="C107369CFFEEFFC0A506FA3AFB61021A" blockId="7.[264,1322,1510,1568]" pageId="7" pageNumber="8">
<emphasis id="F3CCEA8EFFEEFFC0A506FA3AFE5201C4" bold="true" box="[264,395,1510,1534]" pageId="7" pageNumber="8">FIGURE 1.</emphasis>
<taxonomicName id="06B84D1FFFEEFFC0A59DFA3AFD5801C7" box="[403,641,1510,1533]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="7" pageNumber="8" phylum="Arthropoda" rank="species" species="humphreysi" status="gen. nov.">
<emphasis id="F3CCEA8EFFEEFFC0A59DFA3AFD5801C7" box="[403,641,1510,1533]" italics="true" pageId="7" pageNumber="8">Pygolabis humphreysi</emphasis>
</taxonomicName>
<emphasis id="F3CCEA8EFFEEFFC0A687FA3AFC9401C4" bold="true" box="[649,845,1510,1534]" pageId="7" pageNumber="8">
<taxonomicNameLabel id="E8FF57F5FFEEFFC0A687FA3AFD2901C4" box="[649,752,1510,1534]" pageId="7" pageNumber="8" rank="genus">gen. nov.</taxonomicNameLabel>
, sp. nov
</emphasis>
(holotype male WAM C33562, light micrographs): A, C. Body, dorsal and lateral; B, D. Head, dorsal and lateral. (scale bars 1 mm)
</paragraph>
</caption>
<caption id="95C76614FFEEFFC0A506F91AFB0D037F" pageId="7" pageNumber="8">
<paragraph id="C107369CFFEEFFC0A506F91AFB0D037F" blockId="7.[264,1324,1734,1861]" pageId="7" pageNumber="8">
<emphasis id="F3CCEA8EFFEEFFC0A506F91AFE5302E4" bold="true" box="[264,394,1734,1758]" pageId="7" pageNumber="8">FIGURE 2.</emphasis>
<taxonomicName id="06B84D1FFFEEFFC0A59CF91AFD5902E7" box="[402,640,1734,1757]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="7" pageNumber="8" phylum="Arthropoda" rank="species" species="humphreysi">
<emphasis id="F3CCEA8EFFEEFFC0A59CF91AFD5902E7" box="[402,640,1734,1757]" italics="true" pageId="7" pageNumber="8">Pygolabis humphreysi</emphasis>
</taxonomicName>
(paratype male AM P64993, SEM of antennae and mandibles): A­B. Antenna, left ventral and articles 1­3 lateral; C­D. Antennula, left ventral and rudimentary second flagellum medial; E­F. Left mandible, ventral and medial; G­H. Right mandible, medial and enlargement of palp articles 2­3 ventral. (scale bars: A, C 1 mm; E, H 05.mm; F, G 0.1mm)
</paragraph>
</caption>
<subSubSection id="89A26517FFE0FFCEA536FEC7FD8E0564" pageId="9" pageNumber="10" type="etymology">
<paragraph id="C107369CFFE0FFCEA536FEC7FD8E0564" blockId="9.[264,1323,283,1870]" pageId="9" pageNumber="10">
<emphasis id="F3CCEA8EFFE0FFCEA536FEC7FE1D050F" bold="true" box="[312,452,283,309]" pageId="9" pageNumber="10">Etymology.</emphasis>
The genus name is derived from the Greek words &quot;pyge&quot; (tail) and &quot;labis&quot; (forceps or tongs, feminine).
</paragraph>
</subSubSection>
<subSubSection id="89A26517FFE0FFCEA536FEB7FCC80044" pageId="9" pageNumber="10" type="diagnosis">
<paragraph id="C107369CFFE0FFCEA536FEB7FCC80044" blockId="9.[264,1323,283,1870]" pageId="9" pageNumber="10">
<emphasis id="F3CCEA8EFFE0FFCEA536FEB7FE6105BF" bold="true" box="[312,440,363,389]" pageId="9" pageNumber="10">Diagnosis.</emphasis>
Pereonite 1 lateral length subequal or shorter than other pereonites. Pleotelson distal margin produced medially and concave distolaterally, region anterior to uropods elongate, uropods inserting ventrally approximately halfway along length of pleotelson; ventral surface anterior and medial to insertion of uropods flat, anus opening posteroventrally, in distal half of pleotelson just posteromedial to uropod insertions, preanal ridge present. Mandible incisor in medial view broader than molar process. Penes narrow and tapering distally, width much less than half length. Pleopod II appendix masculina biarticulate, shorter than exopod, expanding distally after constricted midpoint; ventral surface with deep groove lined with elongate cuticular hairs and combs; dorsal surface strongly expanded laterally with denticulate ridge (visible on ventral side), with large spines along ridge projecting anteromedially, distal spines distinctly longer than proximal spines; distal tip with rounded cup lined with dense cuticular combs. Pleopod II of female and III­V of both sexes endopods bilobed and tumescent, broader than long, with transverse folds, both lobes near same thickness. Pleopod II exopod uniarticulate in male, biarticulate in female. Pleopod V exopod not reaching anus. Uropods inserting approximately half way along pleotelson; protopod robust sensillate setae absent, with small tooth­like setae along medial margin; both rami without robust sensillate setae, long thin simple setae occurring along endopod lateral margin and all margins of exopod; endopod with row of small tooth­like setae, mostly placed proximally, distally pointed medially curved robust claw; exopod flattened and distally rounded.
</paragraph>
</subSubSection>
<subSubSection id="89A26517FFE0FFCBA536FB50FE9005EC" lastPageId="12" lastPageNumber="13" pageId="9" pageNumber="10" type="discussion">
<paragraph id="C107369CFFE0FFCDA536FB50FE4C0564" blockId="9.[264,1323,283,1870]" lastBlockId="10.[264,1323,284,350]" lastPageId="10" lastPageNumber="11" pageId="9" pageNumber="10">
<emphasis id="F3CCEA8EFFE0FFCEA536FB50FE65009C" bold="true" box="[312,444,1164,1190]" pageId="9" pageNumber="10">Discussion</emphasis>
. Despite being broadly similar to 
<taxonomicName id="06B84D1FFFE0FFCEA767FB50FAFF009C" authority="Wilson and Ponder, 1992" authorityName="Wilson and Ponder" authorityYear="1992" box="[873,1318,1164,1190]" class="Malacostraca" family="Tainisopidae" genus="Tainisopus" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="10" phylum="Arthropoda" rank="genus">
<emphasis id="F3CCEA8EFFE0FFCEA767FB50FC3E009F" box="[873,999,1164,1189]" italics="true" pageId="9" pageNumber="10">Tainisopus</emphasis>
<bibRefCitation id="A5294B6DFFE0FFCEA7FCFB50FAFF009C" author="Wilson" box="[1010,1318,1164,1190]" pageId="9" pageNumber="20" refString="Wilson, G. D. F. &amp; Ponder, W. F. (1992) Extraordinary new subterranean isopods (Peracarida, Crustacea) from the Kimberley Region, Western Australia. Records of the Australian Museum, 44, 279 - 298." type="journal article" year="1992">Wilson and Ponder, 1992</bibRefCitation>
</taxonomicName>
, 
<taxonomicName id="06B84D1FFFE0FFCEA506FB68FEA400F7" box="[264,381,1204,1229]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="10" phylum="Arthropoda" rank="genus" status="gen. nov.">
<emphasis id="F3CCEA8EFFE0FFCEA506FB68FEA400F7" box="[264,381,1204,1229]" italics="true" pageId="9" pageNumber="10">Pygolabis</emphasis>
</taxonomicName>
<emphasis id="F3CCEA8EFFE0FFCEA584FB68FE2400F4" bold="true" box="[394,509,1204,1230]" pageId="9" pageNumber="10">
<taxonomicNameLabel id="E8FF57F5FFE0FFCEA584FB68FE2400F4" box="[394,509,1204,1230]" pageId="9" pageNumber="10" rank="genus">gen. nov.</taxonomicNameLabel>
</emphasis>
differs markedly in having a powerful pair of grasping claw­like uropodal endopods (hence their name “tail­tongs”). Modifications of the pleotelson appear to service these tongs. The cuticle is thick and strong, and the enlarged anterior portion of the pleotelson has powerful extrinsic retractor muscles attached to the uropods. So strong is the association between the uropods and the pleotelson that several attempts to remove the uropods without damaging the pleotelson proved futile (hence the cracks seen in Figure 6E­G). The endopods are apparently used to grip the substrate and were found to be difficult to remove from nets in which they were captured (W.F. Humphreys, S. Anstee, pers. comm.). Similar structures are found on the tail appendages of other hypogean crustaceans: 
<taxonomicName id="06B84D1FFFE0FFCEA576F9C0FDE1020C" box="[376,568,1564,1590]" class="Malacostraca" family="Hypsimetopidae" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="10" phylum="Arthropoda" rank="family">Hypsimetopidae</taxonomicName>
(Wilson &amp; Keable in preparation) or Bathynellacea (e.g., 
<bibRefCitation id="A5294B6DFFE0FFCEA506F998FE110264" author="Schminke" box="[264,456,1604,1630]" pageId="9" pageNumber="20" refString="Schminke, H. K. (1973) Evolution, systematics and zoogeography of the family Parabathynellidae (Bathynellacea, Malacostraca). Mikrofauna des Meersbodens, 24, 1 - 192." type="journal article" year="1973">Schminke 1973</bibRefCitation>
). These unrelated animals having similar structures suggests that some unknown, possibly hydrological, characteristic of the hypogean environment may select for these modified grasping appendages. Some specimens, including the 
<typeStatus id="1E03883EFFE0FFCEA080F948FB2C0294" box="[1166,1269,1684,1710]" pageId="9" pageNumber="10" type="holotype">holotype</typeStatus>
and associated 
<typeStatus id="1E03883EFFE0FFCEA586F960FE2102EC" box="[392,504,1724,1750]" pageId="9" pageNumber="10" type="paratype">paratypes</typeStatus>
of 
<taxonomicName id="06B84D1FFFE0FFCEA629F960FD1502EF" box="[551,716,1724,1749]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="10" phylum="Arthropoda" rank="species" species="humphreysi" status="sp. nov.">
<emphasis id="F3CCEA8EFFE0FFCEA629F960FD1502EF" box="[551,716,1724,1749]" italics="true" pageId="9" pageNumber="10">P. humphreysi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="E8FF57F5FFE0FFCEA6DAF960FCF702EC" box="[724,814,1724,1750]" pageId="9" pageNumber="10" rank="species">sp. nov.</taxonomicNameLabel>
(field number BES4836), were captured in traps, suggesting that this species may be predatory or a scavenger. Whether the uropodal tongs of 
<taxonomicName id="06B84D1FFFE0FFCEA57FF8D0FE3F031F" box="[369,486,1804,1829]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="9" pageNumber="10" phylum="Arthropoda" rank="genus">
<emphasis id="F3CCEA8EFFE0FFCEA57FF8D0FE3F031F" box="[369,486,1804,1829]" italics="true" pageId="9" pageNumber="10">Pygolabis</emphasis>
</taxonomicName>
could be used to hold prey, similar to the forceps of Dermaptera (earwigs) or 
<taxonomicName id="06B84D1FFFE0FFCEA57DF8E8FE320374" box="[371,491,1844,1870]" class="Entognatha" family="Japygidae" kingdom="Animalia" order="Diplura" pageId="9" pageNumber="10" phylum="Arthropoda" rank="family">Japygidae</taxonomicName>
, is unknown. Owing to the difficulty of observing this species in situ, live observations in an aquarium might assist our understanding of these unusual stygofaunal isopods.
</paragraph>
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<paragraph id="C107369CFFE3FFCDA506F93BFBCB0371" blockId="10.[264,1322,1767,1867]" pageId="10" pageNumber="11">
<emphasis id="F3CCEA8EFFE3FFCDA506F93BFE5502C5" bold="true" box="[264,396,1767,1791]" pageId="10" pageNumber="11">FIGURE 3.</emphasis>
<taxonomicName id="06B84D1FFFE3FFCDA598F934FD5F02C5" box="[406,646,1768,1791]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="10" pageNumber="11" phylum="Arthropoda" rank="species" species="humphreysi">
<emphasis id="F3CCEA8EFFE3FFCDA598F934FD5F02C5" box="[406,646,1768,1791]" italics="true" pageId="10" pageNumber="11">Pygolabis humphreysi</emphasis>
</taxonomicName>
(paratype male AM P64993, SEM of mouthparts): A. Paragnaths, ventral; B­C. Maxillula, right ventral and lateral lobe medial; D. Maxilla, right ventral; E­F. Maxilliped, right ventral and endite medial (scale bars A­B, D­E 0.1mm)
</paragraph>
</caption>
<caption id="95C76614FFE2FFCCA506F980FBDF0283" httpUri="https://zenodo.org/record/156264/files/figure.png" pageId="11" pageNumber="12" targetBox="[264,1322,321,1602]" targetPageId="11">
<paragraph id="C107369CFFE2FFCCA506F980FBDF0283" blockId="11.[264,1324,1628,1721]" pageId="11" pageNumber="12">
<emphasis id="F3CCEA8EFFE2FFCCA506F980FE53024E" bold="true" box="[264,394,1628,1652]" pageId="11" pageNumber="12">FIGURE 4.</emphasis>
<taxonomicName id="06B84D1FFFE2FFCCA59CF981FDA7024E" box="[402,638,1629,1652]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="humphreysi">
<emphasis id="F3CCEA8EFFE2FFCCA59CF981FDA7024E" box="[402,638,1629,1652]" italics="true" pageId="11" pageNumber="12">Pygolabis humphreysi</emphasis>
</taxonomicName>
(paratype male AM P64993, SEM of anterior pereopods): A­B. Pereopod I, left lateral and enlargement of palm; C­E. Pereopod II, right lateral and enlargements of distal podomeres; F, Pereopod III, left lateral. (scale bars A, C, F 1 mm)
</paragraph>
</caption>
<paragraph id="C107369CFFE2FFCBA536F934FE9005EC" blockId="11.[264,1323,1768,1874]" lastBlockId="12.[264,1323,284,470]" lastPageId="12" lastPageNumber="13" pageId="11" pageNumber="12">
The body shape also differs between the two genera: 
<taxonomicName id="06B84D1FFFE2FFCCA7A1F934FBF4033B" box="[943,1069,1768,1793]" class="Malacostraca" family="Tainisopidae" genus="Tainisopus" kingdom="Animalia" order="Isopoda" pageId="11" pageNumber="12" phylum="Arthropoda" rank="genus">
<emphasis id="F3CCEA8EFFE2FFCCA7A1F934FBF4033B" box="[943,1069,1768,1793]" italics="true" pageId="11" pageNumber="12">Tainisopus</emphasis>
</taxonomicName>
is broader and flatter (body length approximately 5 times width) compared to the distinctly thinner 
<taxonomicName id="06B84D1FFFE2FFCCA0BBF8CCFAF30313" box="[1205,1322,1808,1833]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="11" pageNumber="12" phylum="Arthropoda" rank="genus">
<emphasis id="F3CCEA8EFFE2FFCCA0BBF8CCFAF30313" box="[1205,1322,1808,1833]" italics="true" pageId="11" pageNumber="12">Pygolabis</emphasis>
</taxonomicName>
(body lengths 7­8 times width). The male pleopod II appendix masculina is also different: it is relatively undifferentiated in 
<taxonomicName id="06B84D1FFFE5FFCBA693FEC0FCC2050F" box="[669,795,284,309]" class="Malacostraca" family="Tainisopidae" genus="Tainisopus" kingdom="Animalia" order="Isopoda" pageId="12" pageNumber="13" phylum="Arthropoda" rank="genus">
<emphasis id="F3CCEA8EFFE5FFCBA693FEC0FCC2050F" box="[669,795,284,309]" italics="true" pageId="12" pageNumber="13">Tainisopus</emphasis>
</taxonomicName>
(
<bibRefCitation id="A5294B6DFFE5FFCBA723FEC0FB15050C" author="Wilson" box="[813,1228,284,310]" pageId="12" pageNumber="20" refString="Wilson, G. D. F. &amp; Ponder, W. F. (1992) Extraordinary new subterranean isopods (Peracarida, Crustacea) from the Kimberley Region, Western Australia. Records of the Australian Museum, 44, 279 - 298." type="journal article" year="1992">Wilson &amp; Ponder 1992: fig. 8B­C</bibRefCitation>
), somewhat similar to that seen in other Flabellifera, whereas in 
<taxonomicName id="06B84D1FFFE5FFCBA7C8FE98FBE20567" box="[966,1083,324,349]" class="Malacostraca" family="Tainisopidae" genus="Pygolabis" kingdom="Animalia" order="Isopoda" pageId="12" pageNumber="13" phylum="Arthropoda" rank="genus">
<emphasis id="F3CCEA8EFFE5FFCBA7C8FE98FBE20567" box="[966,1083,324,349]" italics="true" pageId="12" pageNumber="13">Pygolabis</emphasis>
</taxonomicName>
, it bears a complex arrangement of grooves, denticles and spines (
<figureCitation id="59832A19FFE5FFCBA749FEB0FC4505BC" box="[839,924,364,390]" captionStart="FIGURE 6" captionStartId="16.[264,368,284,308]" captionText="FIGURE 6. Pygolabis humphreysi (paratype male AM P 64993, SEM of pleon, appendix masculina and uropods): A. Pereonite 7, penes, pleonites 1 ­ 2 and pleopods I, ventral. B­D, pleopod II appendix masculina and protopod ventral, distal tip enlargement dorsal and lateral; E­H, Pleotelson and left uropod, dorsal, ventral, distal enlargement dorsal and ventral. (scale bars: A, E­F 1 mm, B 0.1 mm)" pageId="12" pageNumber="13">Figs. 6</figureCitation>
B­D, 7C, F). Similarly modified structures occur in the Asellota or Oniscidea (Wilson 1991), although not this particular form.
</paragraph>
</subSubSection>
</treatment>
</document>