treatments-xml/data/03/A8/87/03A887E7D43CA02260CED992306DFDA3.xml

<document id="8739C8D1826E5D6779E888309E6A834D" ID-CLB-Dataset="26539" ID-DOI="10.11646/zootaxa.4614.2.3" ID-GBIF-Dataset="d329726e-6a89-41a8-baba-b26dccac1751" ID-ISSN="1175-5326" ID-Zenodo-Dep="3242403" ID-ZooBank="3053533C-BDDE-4321-95B2-D557F3CF048D" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1560166566376" checkinUser="plazi" docAuthor="Zhang, Jinghuai, Hutchings, Pat &amp; Kupriyanova, Elena" docDate="2019" docId="03A887E7D43CA02260CED992306DFDA3" docLanguage="en" docName="zootaxa.4614.2.3.pdf" docOrigin="Zootaxa 4614 (2)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Petta williamsonae Zhang &amp; Hutchings &amp; Kupriyanova 2019, n. sp." docType="treatment" docVersion="10" lastPageNumber="326" masterDocId="FF91FF9FD42EA0356059D908330BFFC0" masterDocTitle="A revision of the genus Petta Malmgren, 1866 (Annelida: Pectinariidae), with two new species from deep waters of southeastern Australia, and comments on phylogeny of the family" masterLastPageNumber="330" masterPageNumber="303" pageNumber="321" updateTime="1698733849990" updateUser="ExternalLinkService">
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<mods:title id="3E8E2CF60CE3D741E5A288DB65AAA464">A revision of the genus Petta Malmgren, 1866 (Annelida: Pectinariidae), with two new species from deep waters of southeastern Australia, and comments on phylogeny of the family</mods:title>
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<mods:namePart id="9BF086A726B7C177DDB8A09FAD71477E">Zhang, Jinghuai</mods:namePart>
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<emphasis id="B975EAE3D43CA02760CED99232CDFF74" bold="true" box="[151,454,153,180]" pageId="18" pageNumber="321">
<taxonomicName id="4C014D72D43CA02760CED9923277FF74" ID-CoL="85RRW" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[151,380,153,180]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="18" pageNumber="321" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D43CA02760CED9923277FF74" bold="true" box="[151,380,153,180]" italics="true" pageId="18" pageNumber="321">Petta williamsonae</emphasis>
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<subSubSection id="C31B657AD43CA02760CED9B5327EFF17" box="[151,373,189,215]" pageId="18" pageNumber="321" type="description">
<paragraph id="8BBE36F1D43CA02760CED9B5327EFF17" blockId="18.[151,454,153,215]" box="[151,373,189,215]" pageId="18" pageNumber="321">
<figureCitation id="133A2A74D43CA02760CED9B5321CFF17" box="[151,279,189,215]" captionStart-0="FIGURE 12" captionStart-1="FIGURE 13" captionStart-2="FIGURE 14" captionStartId-0="19.[151,250,1743,1768]" captionStartId-1="20.[151,250,1743,1768]" captionStartId-2="21.[151,250,1807,1832]" captionTargetBox-0="[174,1412,214,1655]" captionTargetBox-1="[170,1418,201,1669]" captionTargetBox-2="[174,1413,323,1767]" captionTargetId-0="figure@19.[174,1413,214,1669]" captionTargetId-1="figure@20.[170,1418,201,1669]" captionTargetId-2="figure@21.[173,1414,345,1767]" captionTargetPageId-0="19" captionTargetPageId-1="20" captionTargetPageId-2="21" captionText-0="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." captionText-1="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." captionText-2="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri-0="https://zenodo.org/record/3242427/files/figure.png" httpUri-1="https://zenodo.org/record/3242429/files/figure.png" httpUri-2="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">Figs 12–14</figureCitation>
, 
<tableCitation id="C683034AD43CA027617BD9B5327EFF17" box="[290,373,189,215]" captionStart="TABLE 2" captionStartId="22.[151,239,654,680]" captionTargetBox="[165,1992,707,1580]" captionText="TABLE 2. A summary of comparative diagnostic characters for the species of the genus Petta species as used in this study." httpUri="http://table.plazi.org/id/DF7E6679D438A02360CEDB8636B2FD68" pageId="18" pageNumber="321" tableUuid="DF7E6679D438A02360CEDB8636B2FD68">Table 2</tableCitation>
</paragraph>
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<paragraph id="8BBE36F1D43CA02760CED80D3110FEA7" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
<emphasis id="B975EAE3D43CA02760CED80D3270FEE0" bold="true" box="[151,379,261,288]" pageId="18" pageNumber="321">Material examined</emphasis>
. 
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<collectionCode id="ED10AE34D43CA02761A0D80E312DFEE0" box="[505,550,262,288]" country="Australia" name="Australian Museum" pageId="18" pageNumber="321" type="Museum">AM</collectionCode>
W.50667, broken between segments 16–17
</materialsCitation>
: 
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<typeStatus id="54BA8853D43CA027647FD80E3783FEE0" box="[1062,1160,262,288]" pageId="18" pageNumber="321" type="paratype">Paratype</typeStatus>
<collectionCode id="ED10AE34D43CA02764D6D80E37B7FEE0" box="[1167,1212,262,288]" country="Australia" name="Australian Museum" pageId="18" pageNumber="321" type="Museum">AM</collectionCode>
W.51459 (mounted for 
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), complete, 
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, 
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: 
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<geoCoordinate id="EE355036D43CA02762A3D8213082FE84" box="[762,905,297,324]" degrees="149" direction="east" minutes="16.56" orientation="longitude" pageId="18" pageNumber="321" precision="9" value="149.276">149º16.56´E</geoCoordinate>
, 2760– 
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</elevation>
, coll. R/V “ 
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” 
<collectingMunicipality id="6BDAAC8BD43CA0276510D8223697FE84" box="[1353,1436,298,324]" pageId="18" pageNumber="321">Voyage</collectingMunicipality>
3 St. 022, 
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, 
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<date id="FFBF1031D43CA02761F8D8463113FEA7" box="[417,536,333,360]" pageId="18" pageNumber="321" value="2017-05">May 2017</date>
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.
</paragraph>
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<paragraph id="8BBE36F1D43CA027609ED8793118FE13" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
<emphasis id="B975EAE3D43CA027609ED879325AFE4C" bold="true" box="[199,337,369,396]" pageId="18" pageNumber="321">Description</emphasis>
. Preserved specimens pale reddish in colour, dumb-bell shaped with broad anterior end and scaphe (
<figureCitation id="133A2A74D43CA02760C6D89D3201FE6F" box="[159,266,405,431]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">Figs 13A</figureCitation>
; 
<figureCitation id="133A2A74D43CA027614CD89D3242FE6F" box="[277,329,405,431]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14A</figureCitation>
). Body length 14.5–20.0 mm (
<typeStatus id="54BA8853D43CA02762C2D89D31F4FE6F" box="[667,767,405,431]" pageId="18" pageNumber="321" type="holotype">holotype</typeStatus>
about 
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) including paleae and scaphe, width 
<quantity id="4CF99B14D43CA0276511D89D33C8FE14" metricMagnitude="-3" metricUnit="m" metricValue="2.5999999999999996" metricValueMax="2.9" metricValueMin="2.3" pageId="18" pageNumber="321" unit="mm" value="2.5999999999999996" valueMax="2.9" valueMin="2.3">2.3–2.9 mm</quantity>
(
<quantity id="4CF99B14D43CA027608BD8B13221FE14" box="[210,298,441,468]" metricMagnitude="-3" metricUnit="m" metricValue="2.3" pageId="18" pageNumber="321" unit="mm" value="2.3">2.3 mm</quantity>
) at cephalic regions.
</paragraph>
<paragraph id="8BBE36F1D43CA027609ED8D530BCFDA3" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
Cephalic veil heart-shaped, free operculum, with smooth margin and short triangular anterior end (
<figureCitation id="133A2A74D43CA0276572D8D5369CFE37" box="[1323,1431,477,503]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12B</figureCitation>
; 
<figureCitation id="133A2A74D43CA02760CEDB0933E7FDDC" box="[151,236,513,540]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13A, D</figureCitation>
; 
<figureCitation id="133A2A74D43CA02760A1DB093247FDDC" box="[248,332,513,540]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14B, D</figureCitation>
). Pair of lateral ear-shaped lobes (palps) adjacent to dorsal base of cephalic veil (
<figureCitation id="133A2A74D43CA027648DDB093630FDDB" box="[1236,1339,513,539]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Fig. 12C</figureCitation>
). Buccal tentacles with deep longitudinal grooves, arising from around buccal cavity, posterior to cephalic veil (
<figureCitation id="133A2A74D43CA0276572DB2D3693FDFF" box="[1323,1432,549,575]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12B</figureCitation>
; 
<figureCitation id="133A2A74D43CA02760CEDB4133C1FDA3" box="[151,202,585,611]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13A</figureCitation>
; 
<figureCitation id="133A2A74D43CA027608FDB413201FDA3" box="[214,266,585,611]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14D</figureCitation>
). Lower lip not visible between buccal cavity and segment 1.
</paragraph>
<paragraph id="8BBE36F1D43CA027609EDB6533DDFD0F" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
Operculum semicircular; dorsal and lateral margins well developed, smooth; ventral margin (opercular ridge) with 14 pairs of amber-coloured, stout, long notopodial paleae, curved dorsally, with blunt tips (
<figureCitation id="133A2A74D43CA02764B0DB993653FD6B" box="[1257,1368,657,683]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12A</figureCitation>
; 
<figureCitation id="133A2A74D43CA027653FDB99369CFD6B" box="[1382,1431,657,683]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13B</figureCitation>
; 
<figureCitation id="133A2A74D43CA02760CEDBBD33C1FD0F" box="[151,202,693,719]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14C</figureCitation>
).
</paragraph>
<paragraph id="8BBE36F1D43CA027609EDBD13746FCA0" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
First pair of tentacular cirri not extending beyond tips of paleae, annuli not distinct, arising from connection of opercular margin and paleal ridge (
<figureCitation id="133A2A74D43CA027627FDBF53170FCD7" box="[550,635,765,791]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12</figureCitation>
A–B; 13B; 14D). Pair of narrow triangular lappets present behind tentacular cirri, on both sides of segment 1, partly covered by ventral lobes of segment 2 (
<figureCitation id="133A2A74D43CA027640CDA2937B4FCFB" box="[1109,1215,801,827]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12B</figureCitation>
; 
<figureCitation id="133A2A74D43CA0276493DA2937F1FCFB" box="[1226,1274,801,827]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13E</figureCitation>
; 
<figureCitation id="133A2A74D43CA027655CDA293632FCFB" box="[1285,1337,801,827]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14D</figureCitation>
). Ventral region of segment 1 covered by ventral lobes of segment 2 (
<figureCitation id="133A2A74D43CA027636FDA4D30AAFC9F" box="[822,929,837,863]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12B</figureCitation>
; 
<figureCitation id="133A2A74D43CA02763F4DA4D30D4FC9F" box="[941,991,837,863]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13A</figureCitation>
; 
<figureCitation id="133A2A74D43CA02763B5DA4D374BFCA0" box="[1004,1088,837,864]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14B, D</figureCitation>
).
</paragraph>
<paragraph id="8BBE36F1D43CA027609EDA613176FC30" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
Second pair of tentacular cirri almost same length as first, annulation indistinct, and displaced dorsally, on almost mid-lateral connecting ridge of segment 2 (
<figureCitation id="133A2A74D43CA027628DDA853022FC67" box="[724,809,909,935]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12</figureCitation>
A–B; 13B; 14D). Segment 2 with pair of broad ventrolateral lobes separated from each other by a narrow deep mid-ventral groove, each lobe with 7–8 continuous row of triangular lappets (
<figureCitation id="133A2A74D43CA0276130DADD32DFFC2F" box="[361,468,981,1007]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12B</figureCitation>
; 
<figureCitation id="133A2A74D43CA0276186DADD311BFC2F" box="[479,528,981,1007]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13E</figureCitation>
; 
<figureCitation id="133A2A74D43CA0276242DADD317BFC30" box="[539,624,981,1008]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14B, D</figureCitation>
).
</paragraph>
<paragraph id="8BBE36F1D43CA027609EDAF23238FB9B" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
Two pairs of equal sized comb-like branchiae on segments 3–4, consisting of large basal hump and series of loose flat lamellae (
<figureCitation id="133A2A74D43CA027612EDD1532EFFBF7" box="[375,484,1053,1079]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12D</figureCitation>
; 
<figureCitation id="133A2A74D43CA02761ABDD15312BFBF7" box="[498,544,1053,1079]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13F</figureCitation>
; 
<figureCitation id="133A2A74D43CA0276277DD15316BFBF7" box="[558,608,1053,1079]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14C</figureCitation>
). First pair of branchiae on segment 3 inserted more ventrally than those on segment 4.
</paragraph>
<paragraph id="8BBE36F1D43CA027609EDD6D323EFB63" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
Pair of dorso-lateral pads small and smooth, arising from dorsal side of notopodia on segment 5 (
<figureCitation id="133A2A74D43CA0276570DD6D3693FBBF" box="[1321,1432,1125,1151]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12A</figureCitation>
; 
<figureCitation id="133A2A74D43CA02760CEDD8133BAFB63" box="[151,177,1161,1187]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13</figureCitation>
B–C; 14C).
</paragraph>
<paragraph id="8BBE36F1D43CA027609EDDA531B8FA03" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
Distinct ventral glandular lobes (pads) present on segments 2–7, becoming progressively more dorsal and broader on segments 3–5 (
<figureCitation id="133A2A74D43CA02761E6DDD93121FB2B" box="[447,554,1233,1259]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12B</figureCitation>
; 
<figureCitation id="133A2A74D43CA027626FDDD9315BFB2B" box="[566,592,1233,1259]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13</figureCitation>
A–B; 14B). Humps near branchiae absent on ventral lobes (
<figureCitation id="133A2A74D43CA02764B6DDD93651FB2B" box="[1263,1370,1233,1259]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12B</figureCitation>
; 
<figureCitation id="133A2A74D43CA027653FDDD9369CFB2B" box="[1382,1431,1233,1259]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13B</figureCitation>
; 
<figureCitation id="133A2A74D43CA02760CEDDFD33C2FACF" box="[151,201,1269,1295]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14B</figureCitation>
). Segment 3 with a pair of broad ventro-lateral lobes and a pair of mid-ventral lappets, separated from those by deep notches; ventro-lateral lobes smooth with rounded ventral margin; mid-ventral lappets oblong and narrow about 1/5 width of ventro-lateral lobes, and more posterior than ventro-lateral lobes (
<figureCitation id="133A2A74D43CA027643FDC3537D9FA97" box="[1126,1234,1341,1367]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12B</figureCitation>
; 
<figureCitation id="133A2A74D43CA02764B9DC353618FA97" box="[1248,1299,1341,1367]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13A</figureCitation>
; 
<figureCitation id="133A2A74D43CA0276578DC353658FA97" box="[1313,1363,1341,1367]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14B</figureCitation>
). Segments 4–6 with a pair of broad ventro-lateral lobes separated by a shallow median groove becoming progressively broader on segments 4–6. Segment 7 with a pair of broad ventro-lateral lobes separated from each other by median swelling about 1/5 width of ventro-lateral lobes.
</paragraph>
<paragraph id="8BBE36F1D43CA027609EDCC53059F923" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
Notopodia of segment 1 with paleae, segments 5–21 (17 pairs) with two rows of chaetae; anterior row of shorter chaetae with distal serrated wings, anterior surface below wing to about mid-basal portion of chaeta covered with numerous minute spines; posterior row with about 1.4 times longer capillary chaetae, straight and stout, tapering to acute tips, anterior surface covered with numerous spines from mid-length to tip (
<figureCitation id="133A2A74D43CA027647CDF313773F993" box="[1061,1144,1593,1619]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12</figureCitation>
H–I; 14F–G). Neuropodia on segments 8–21 (14 pairs), each with slightly raised torus bearing a transverse row of uncini. Each uncinus with one rounded anterior peg with blunt tip embedded into torus, followed by several rows of minor teeth on a swelling, a longitudinal row of two major teeth, each covered with many small teeth basally (
<figureCitation id="133A2A74D43CA0276462DFAD37A3F97F" box="[1083,1192,1701,1727]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12G</figureCitation>
; 
<figureCitation id="133A2A74D43CA02764EADFAD37ECF97F" box="[1203,1255,1701,1727]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">14H</figureCitation>
). Neuropodia of segment 21 with enlarged posterior lobe (
<figureCitation id="133A2A74D43CA0276231DFC131B0F923" box="[616,699,1737,1763]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12</figureCitation>
E–F; 13G–I).
</paragraph>
<paragraph id="8BBE36F1D43CA027609EDFE53675F87B" blockId="18.[151,1437,261,1979]" pageId="18" pageNumber="321">
Scaphe long ovoid, flattened dorsally, well separated by a constriction from posterior segments. Lateral margins of scaphe dorsally rolled, with six pairs of lobes; first pair of lobes largest, connecting with dorsal margin of scaphe; posterior lobes narrow triangular, almost same size; dorsal margin of scaphe smooth with a median notch (
<figureCitation id="133A2A74D43CA027651EDE3D3697F88F" box="[1351,1436,1845,1871]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12</figureCitation>
E–F; 13G–I; 14E). Anal flap vestigial with oblong swollen area distally bearing long anal cirrus (
<figureCitation id="133A2A74D43CA027648BDE513632F8B3" box="[1234,1337,1881,1907]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12F</figureCitation>
; 
<figureCitation id="133A2A74D43CA027651CDE513685F8B4" box="[1349,1422,1881,1908]" captionStart="FIGURE 13" captionStartId="20.[151,250,1743,1768]" captionTargetBox="[170,1418,201,1669]" captionTargetId="figure@20.[170,1418,201,1669]" captionTargetPageId="20" captionText="FIGURE 13. Petta williamsonae n. sp. Methyl green stained body of holotype (AM W.50667):A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="18" pageNumber="321">13G, I</figureCitation>
). Anus located behind anal cirrus, between last pair of lateral lobes on scaphe. Scaphal hooks amber-coloured, nine pairs arising from both sides of dorsal margin of scaphe, with blunt tips slightly curved dorsally (
<figureCitation id="133A2A74D43CA027648CDEA93636F87B" box="[1237,1341,1953,1979]" captionStart="FIGURE 12" captionStartId="19.[151,250,1743,1768]" captionTargetBox="[174,1412,214,1655]" captionTargetId="figure@19.[174,1413,214,1669]" captionTargetPageId="19" captionText="FIGURE 12. Line drawings of Petta williamsonae n. sp. Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="18" pageNumber="321">Figs 12F</figureCitation>
; 
<figureCitation id="133A2A74D43CA0276511DEA9367AF87B" box="[1352,1393,1953,1979]" captionStart="FIGURE 14" captionStartId="21.[151,250,1807,1832]" captionTargetBox="[174,1413,323,1767]" captionTargetId="figure@21.[173,1414,345,1767]" captionTargetPageId="21" captionText="FIGURE 14. Petta williamsonae n. sp. SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet." httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="18" pageNumber="321">
<date id="FFBF1031D43CA0276511DEA9367AF87B" box="[1352,1393,1953,1979]" pageId="18" pageNumber="321" value="2014-01">14I</date>
</figureCitation>
).
</paragraph>
<caption id="DF7E6679D43DA02660CEDFC73745F800" httpUri="https://zenodo.org/record/3242427/files/figure.png" pageId="19" pageNumber="322" startId="19.[151,250,1743,1768]" targetBox="[174,1412,214,1655]" targetPageId="19">
<paragraph id="8BBE36F1D43DA02660CEDFC73745F800" blockId="19.[151,1437,1743,1985]" pageId="19" pageNumber="322">
<emphasis id="B975EAE3D43DA02660CEDFC73211F928" bold="true" box="[151,282,1743,1768]" pageId="19" pageNumber="322">FIGURE 12</emphasis>
. Line drawings of 
<taxonomicName id="4C014D72D43DA0266186DFD931A9F928" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[479,674,1744,1768]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="19" pageNumber="322" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D43DA0266186DFD931A9F928" box="[479,674,1744,1768]" italics="true" pageId="19" pageNumber="322">Petta williamsonae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D43DA02662F3DFD831EFF928" box="[682,740,1744,1768]" pageId="19" pageNumber="322" rank="species">
<emphasis id="B975EAE3D43DA02662F3DFD831EFF928" bold="true" box="[682,740,1744,1768]" pageId="19" pageNumber="322">n. sp.</emphasis>
</taxonomicNameLabel>
Holotype (AM W.50667): A. Dorso-lateral view of anterior end; B. Ventral view of anterior end; C. Lateral ear-shaped lobe adjacent to the dorsal base of cephalic veil; D. Close-up view of branchia; E. Ventral view of posterior end; F. Dorso-lateral view of posterior end; G. Uncinus; H. Notochaeta from anterior row; I. Notochaeta from posterior row. Abbreviations: ac, anal cirrus; an, anus; ap, anterior peg; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; lel, lateral ear-shaped lobe; mat, major teeth; mit, minor teeth; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet.
</paragraph>
</caption>
<caption id="DF7E6679D43AA02160CEDFC732EDF824" httpUri="https://zenodo.org/record/3242429/files/figure.png" pageId="20" pageNumber="323" startId="20.[151,250,1743,1768]" targetBox="[170,1418,201,1669]" targetPageId="20">
<paragraph id="8BBE36F1D43AA02160CEDFC732EDF824" blockId="20.[151,1437,1743,2020]" pageId="20" pageNumber="323">
<emphasis id="B975EAE3D43AA02160CEDFC73214F928" bold="true" box="[151,287,1743,1768]" pageId="20" pageNumber="323">FIGURE 13.</emphasis>
<taxonomicName id="4C014D72D43AA021617CDFD932ECF928" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[293,487,1744,1768]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="20" pageNumber="323" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D43AA021617CDFD932ECF928" box="[293,487,1744,1768]" italics="true" pageId="20" pageNumber="323">Petta williamsonae</emphasis>
</taxonomicName>
<emphasis id="B975EAE3D43AA02161B4DFD8312DF928" bold="true" box="[493,550,1744,1768]" pageId="20" pageNumber="323">
<taxonomicNameLabel id="A2465798D43AA02161B4DFD8312DF928" box="[493,550,1744,1768]" pageId="20" pageNumber="323" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
Methyl green stained body of holotype (AM W.50667): A. Ventral view of anterior end; B. Lateral view of anterior end; C. Close-up view of right branchiae 1–2 and dorso-lateral pad on segment 5, in lateral view; D. Close-up view of anterior margin on cephalic veil, in ventral view; E. Close-up ventral view of left lobes on segments 1–3; F. Close-up view of left branchiae; G. Dorsal view of posterior end. H. Ventro-lateral view of posterior end, showing lobes on lateral margin of scaphe; I. Dorso-lateral view of posterior end.Abbreviations: ac, anal cirrus; an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; hb, hump of branchia; lb, lamellae of branchia; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet.
</paragraph>
</caption>
<paragraph id="8BBE36F1D43BA020609ED991303BFF73" blockId="21.[151,1437,153,323]" box="[199,816,153,179]" pageId="21" pageNumber="324">Tube broken, made of concretions and shell fragments.</paragraph>
</subSubSection>
<subSubSection id="C31B657AD43BA020609ED9B4301BFF3B" pageId="21" pageNumber="324" type="distribution">
<paragraph id="8BBE36F1D43BA020609ED9B43716FF17" blockId="21.[151,1437,153,323]" box="[199,1053,188,215]" pageId="21" pageNumber="324">
<emphasis id="B975EAE3D43BA020609ED9B4326AFF17" bold="true" box="[199,353,188,215]" pageId="21" pageNumber="324">Distribution.</emphasis>
Bass Strait, 
<collectingCountry id="F3167661D43BA02061B5D9B53158FF17" box="[492,595,189,215]" name="Australia" pageId="21" pageNumber="324">Australia</collectingCountry>
(
<figureCitation id="133A2A74D43BA020623BD9B531AFFF17" box="[610,676,189,215]" captionStart="FIGURE 1" captionStartId="3.[151,250,1819,1844]" captionTargetBox="[151,1436,1180,1799]" captionTargetId="figure@3.[151,1436,1157,1799]" captionTargetPageId="3" captionText="FIGURE 1. Type localities of all Petta species." httpUri="https://zenodo.org/record/3242405/files/figure.png" pageId="21" pageNumber="324">Fig. 1</figureCitation>
). Known only from 
<typeStatus id="54BA8853D43BA02063D5D9B530B7FF17" box="[908,956,189,215]" pageId="21" pageNumber="324">type</typeStatus>
locality.
</paragraph>
<paragraph id="8BBE36F1D43BA020609ED9E8301BFF3B" blockId="21.[151,1437,153,323]" box="[199,784,224,251]" pageId="21" pageNumber="324">
<emphasis id="B975EAE3D43BA020609ED9E83221FF3B" bold="true" box="[199,298,224,251]" pageId="21" pageNumber="324">Habitat.</emphasis>
2760– 
<quantity id="4CF99B14D43BA020612ED9E932C4FF3B" box="[375,463,225,251]" metricMagnitude="3" metricUnit="m" metricValue="2.6919999999999997" pageId="21" pageNumber="324" unit="m" value="2692.0">2692 m</quantity>
. No substrate data available.
</paragraph>
</subSubSection>
<subSubSection id="C31B657AD43BA020609ED80D31C4FE83" pageId="21" pageNumber="324" type="etymology">
<paragraph id="8BBE36F1D43BA020609ED80D31C4FE83" blockId="21.[151,1437,153,323]" pageId="21" pageNumber="324">
<emphasis id="B975EAE3D43BA020609ED80D3245FEDF" bold="true" box="[199,334,261,287]" pageId="21" pageNumber="324">Etymology.</emphasis>
The species is named after Associate Professor Jane Williamson, Biological Sciences, Macquarie University, 
<collectingCountry id="F3167661D43BA0206141D8213274FE83" box="[280,383,297,323]" name="Australia" pageId="21" pageNumber="324">Australia</collectingCountry>
who faciliatated the research.
</paragraph>
</subSubSection>
<caption id="DF7E6679D43BA02060CEDE0732EDF81C" httpUri="https://zenodo.org/record/3242431/files/figure.png" pageId="21" pageNumber="324" startId="21.[151,250,1807,1832]" targetBox="[174,1413,323,1767]" targetPageId="21">
<paragraph id="8BBE36F1D43BA02060CEDE0732EDF81C" blockId="21.[151,1436,1807,2012]" pageId="21" pageNumber="324">
<emphasis id="B975EAE3D43BA02060CEDE07322AF8E8" bold="true" box="[151,289,1807,1832]" pageId="21" pageNumber="324">FIGURE 14.</emphasis>
<taxonomicName id="4C014D72D43BA0206170DE1832E6F8E8" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[297,493,1808,1832]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="21" pageNumber="324" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D43BA0206170DE1832E6F8E8" box="[297,493,1808,1832]" italics="true" pageId="21" pageNumber="324">Petta williamsonae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D43BA02061ACDE183124F8E8" box="[501,559,1808,1832]" pageId="21" pageNumber="324" rank="species">
<emphasis id="B975EAE3D43BA02061ACDE183124F8E8" bold="true" box="[501,559,1808,1832]" pageId="21" pageNumber="324">n. sp.</emphasis>
</taxonomicNameLabel>
SEM of paratype (AM W.51459). A. Lateral view of entire body; B. Ventral view of anterior end; C. Dorso-lateral view of anterior end; D. Close up of segments 1–3, in ventral view; E. Lateral view of posterior end; F-G. Close-up view of notochaetae, segment 10; H. Uncini from segment 10; I. Scaphal hooks. Abbreviations: ac, anal cirrus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; ct, chaetiger; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; nec, neurochaetae; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; sh, scaphal hooks; vl, ventral lappet.
</paragraph>
</caption>
<caption id="DF7E6679D438A02360CEDB8636B2FD68" ID-Table-UUID="DF7E6679D438A02360CEDB8636B2FD68" box="[151,1465,654,680]" httpUri="http://table.plazi.org/id/DF7E6679D438A02360CEDB8636B2FD68" pageId="22" pageNumber="325" startId="22.[151,239,654,680]" targetBox="[165,1992,707,1580]" targetIsTable="true" targetPageId="22">
<paragraph id="8BBE36F1D438A02360CEDB8636B2FD68" blockId="22.[151,1465,654,680]" box="[151,1465,654,680]" pageId="22" pageNumber="325">
<emphasis id="B975EAE3D438A02360CEDB863201FD68" bold="true" box="[151,266,654,680]" pageId="22" pageNumber="325">TABLE 2.</emphasis>
A summary of comparative diagnostic characters for the species of the genus 
<taxonomicName id="4C014D72D438A0236413DB863789FD68" authorityName="Malmgren" authorityYear="1866" box="[1098,1154,654,680]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="22" pageNumber="325" phylum="Annelida" rank="genus">
<emphasis id="B975EAE3D438A0236413DB863789FD68" box="[1098,1154,654,680]" italics="true" pageId="22" pageNumber="325">Petta</emphasis>
</taxonomicName>
species as used in this study.
</paragraph>
</caption>
<paragraph id="8BBE36F1D438A02360FCDBCB3427F9EC" pageId="22" pageNumber="325">
<table id="F901C451D4385FCA60FCDBCB34C3F9EC" box="[165,1992,707,1580]" gridcols="7" gridrows="16" pageId="22" pageNumber="325">
<tr id="353134B3D4385FCA60FCDBCB34C3FD3C" box="[165,1992,707,764]" gridrow="0" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDBCB32B4FD3C" box="[165,447,707,764]" gridcol="0" gridrow="0" pageId="22" pageNumber="325">Characters</th>
<th id="76E05DCFD4385FCA61A9DBCB31D7FD3C" box="[496,732,707,764]" gridcol="1" gridrow="0" pageId="22" pageNumber="325">
<taxonomicName id="4C014D72D438A02361A9DBCB3128FD3C" authority="Malmgren, 1866" authorityName="Malmgren" authorityYear="1866" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="22" pageNumber="325" phylum="Annelida" rank="species" species="pusilla">
<emphasis id="B975EAE3D438A02361A9DBCB3145FD1C" box="[496,590,707,732]" italics="true" pageId="22" pageNumber="325">P. pusilla</emphasis>
Malmgren, 1866
</taxonomicName>
</th>
<th id="76E05DCFD4385FCA62A0DBCB30BBFD3C" box="[761,944,707,764]" gridcol="2" gridrow="0" pageId="22" pageNumber="325">
<taxonomicName id="4C014D72D438A02362A0DBCB3060FD1C" authorityName="McIntosh" authorityYear="1885" box="[761,875,707,732]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="22" pageNumber="325" phylum="Annelida" rank="species" species="assimilis">
<emphasis id="B975EAE3D438A02362A0DBCB3060FD1C" box="[761,875,707,732]" italics="true" pageId="22" pageNumber="325">P. assimilis</emphasis>
</taxonomicName>
McIn- tosh, 1885
</th>
<th id="76E05DCFD4385FCA63BBDBCB37B9FD3C" box="[994,1202,707,764]" gridcol="3" gridrow="0" pageId="22" pageNumber="325">
<taxonomicName id="4C014D72D438A02363BBDBCB3716FD3C" authority="(Ehlers, 1887)" baseAuthorityName="Ehlers" baseAuthorityYear="1887" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="22" pageNumber="325" phylum="Annelida" rank="species" species="pellucida">
<emphasis id="B975EAE3D438A02363BBDBCB3752FD1C" box="[994,1113,707,732]" italics="true" pageId="22" pageNumber="325">P. pellucida</emphasis>
(Ehlers, 1887)
</taxonomicName>
</th>
<th id="76E05DCFD4385FCA6480DBCB36A2FD3C" box="[1241,1449,707,764]" gridcol="4" gridrow="0" pageId="22" pageNumber="325">
<taxonomicName id="4C014D72D438A0236480DBCB3607FD3C" authority="Caullery, 1944" authorityName="Caullery" authorityYear="1944" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="22" pageNumber="325" phylum="Annelida" rank="species" species="tenuis">
<emphasis id="B975EAE3D438A0236480DBCB3624FD1C" box="[1241,1327,707,732]" italics="true" pageId="22" pageNumber="325">P. tenuis</emphasis>
Caullery, 1944
</taxonomicName>
</th>
<th id="76E05DCFD4385FCA6588DBCB35B8FD3C" box="[1489,1715,707,764]" gridcol="5" gridrow="0" pageId="22" pageNumber="325">
<taxonomicName id="4C014D72D438A0236588DBCB357FFD1C" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[1489,1652,707,732]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="22" pageNumber="325" phylum="Annelida" rank="species" species="investigatoris" status="sp. nov.">
<emphasis id="B975EAE3D438A0236588DBCB357FFD1C" box="[1489,1652,707,732]" italics="true" pageId="22" pageNumber="325">P. investigatoris</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D438A0236623DBCB35B8FD1C" box="[1658,1715,707,732]" pageId="22" pageNumber="325" rank="species">
<emphasis id="B975EAE3D438A0236623DBCB35B8FD1C" bold="true" box="[1658,1715,707,732]" pageId="22" pageNumber="325">n. sp.</emphasis>
</taxonomicNameLabel>
</th>
<th id="76E05DCFD4385FCA66BEDBCB34C3FD3C" box="[1767,1992,707,764]" gridcol="6" gridrow="0" pageId="22" pageNumber="325">
<taxonomicName id="4C014D72D438A02366BEDBCB348CFD1C" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[1767,1927,707,732]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="22" pageNumber="325" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D438A02366BEDBCB348CFD1C" box="[1767,1927,707,732]" italics="true" pageId="22" pageNumber="325">P. williamsonae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D438A02367D7DBCB34CCFD1C" box="[1934,1991,707,732]" pageId="22" pageNumber="325" rank="species">
<emphasis id="B975EAE3D438A02367D7DBCB34CCFD1C" bold="true" box="[1934,1991,707,732]" pageId="22" pageNumber="325">n. sp.</emphasis>
</taxonomicNameLabel>
</th>
</tr>
<tr id="353134B3D4385FCA60FCDA0C34C3FCFD" box="[165,1992,772,829]" gridrow="1" pageId="22" pageNumber="325" rowspan-0="1">
<td id="76E05DCFD4385FCA61A9DA0C31D7FCFD" box="[496,732,772,829]" gridcol="1" gridrow="1" pageId="22" pageNumber="325">Holotype and topotypi- cal material</td>
<td id="76E05DCFD4385FCA62A0DA0C30BBFCFD" box="[761,944,772,829]" gridcol="2" gridrow="1" pageId="22" pageNumber="325">Holotype</td>
<td id="76E05DCFD4385FCA63BBDA0C37B9FCFD" box="[994,1202,772,829]" gridcol="3" gridrow="1" pageId="22" pageNumber="325">Types</td>
<td id="76E05DCFD4385FCA6480DA0C36A2FCFD" box="[1241,1449,772,829]" gridcol="4" gridrow="1" pageId="22" pageNumber="325">Types</td>
<td id="76E05DCFD4385FCA6588DA0C35B8FCFD" box="[1489,1715,772,829]" gridcol="5" gridrow="1" pageId="22" pageNumber="325">Types</td>
<td id="76E05DCFD4385FCA66BEDA0C34C3FCFD" box="[1767,1992,772,829]" gridcol="6" gridrow="1" pageId="22" pageNumber="325">Types</td>
</tr>
<tr id="353134B3D4385FCA60FCDA4D34C3FC9E" box="[165,1992,837,862]" gridrow="2" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDA4D32B4FC9E" box="[165,447,837,862]" gridcol="0" gridrow="2" pageId="22" pageNumber="325">Anterior tip of cephalic veil</th>
<td id="76E05DCFD4385FCA61A9DA4D31D7FC9E" box="[496,732,837,862]" gridcol="1" gridrow="2" pageId="22" pageNumber="325">3–4 lappets</td>
<td id="76E05DCFD4385FCA62A0DA4D30BBFC9E" box="[761,944,837,862]" gridcol="2" gridrow="2" pageId="22" pageNumber="325">smooth</td>
<td id="76E05DCFD4385FCA63BBDA4D37B9FC9E" box="[994,1202,837,862]" gridcol="3" gridrow="2" pageId="22" pageNumber="325">smooth</td>
<td id="76E05DCFD4385FCA6480DA4D36A2FC9E" box="[1241,1449,837,862]" gridcol="4" gridrow="2" pageId="22" pageNumber="325">smooth</td>
<td id="76E05DCFD4385FCA6588DA4D35B8FC9E" box="[1489,1715,837,862]" gridcol="5" gridrow="2" pageId="22" pageNumber="325">smooth</td>
<td id="76E05DCFD4385FCA66BEDA4D34C3FC9E" box="[1767,1992,837,862]" gridcol="6" gridrow="2" pageId="22" pageNumber="325">smooth</td>
</tr>
<tr id="353134B3D4385FCA60FCDA7A34C3FC4B" box="[165,1992,882,907]" gridrow="3" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDA7A32B4FC4B" box="[165,447,882,907]" gridcol="0" gridrow="3" pageId="22" pageNumber="325">Pairs of paleae</th>
<td id="76E05DCFD4385FCA61A9DA7A31D7FC4B" box="[496,732,882,907]" gridcol="1" gridrow="3" pageId="22" pageNumber="325">10–11</td>
<td id="76E05DCFD4385FCA62A0DA7A30BBFC4B" box="[761,944,882,907]" gridcol="2" gridrow="3" pageId="22" pageNumber="325">14</td>
<td id="76E05DCFD4385FCA63BBDA7A37B9FC4B" box="[994,1202,882,907]" gridcol="3" gridrow="3" pageId="22" pageNumber="325">12</td>
<td id="76E05DCFD4385FCA6480DA7A36A2FC4B" box="[1241,1449,882,907]" gridcol="4" gridrow="3" pageId="22" pageNumber="325">11</td>
<td id="76E05DCFD4385FCA6588DA7A35B8FC4B" box="[1489,1715,882,907]" gridcol="5" gridrow="3" pageId="22" pageNumber="325">12–13</td>
<td id="76E05DCFD4385FCA66BEDA7A34C3FC4B" box="[1767,1992,882,907]" gridcol="6" gridrow="3" pageId="22" pageNumber="325">14</td>
</tr>
<tr id="353134B3D4385FCA60FCDA9734C3FC38" box="[165,1992,927,1016]" gridrow="4" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDA9732B4FC38" box="[165,447,927,1016]" gridcol="0" gridrow="4" pageId="22" pageNumber="325">Lower lip behind buccal cavity</th>
<td id="76E05DCFD4385FCA61A9DA9731D7FC38" box="[496,732,927,1016]" gridcol="1" gridrow="4" pageId="22" pageNumber="325">broad lobe not covered with ventral lobes of segment 2</td>
<td id="76E05DCFD4385FCA62A0DA9730BBFC38" box="[761,944,927,1016]" gridcol="2" gridrow="4" pageId="22" pageNumber="325">covered with ventral lobes of segment 2</td>
<td id="76E05DCFD4385FCA63BBDA9737B9FC38" box="[994,1202,927,1016]" gridcol="3" gridrow="4" pageId="22" pageNumber="325">covered with ventral lobes of segment 2</td>
<td id="76E05DCFD4385FCA6480DA9736A2FC38" box="[1241,1449,927,1016]" gridcol="4" gridrow="4" pageId="22" pageNumber="325">covered with ventral lobes of segment 2</td>
<td id="76E05DCFD4385FCA6588DA9735B8FC38" box="[1489,1715,927,1016]" gridcol="5" gridrow="4" pageId="22" pageNumber="325">covered with ventral lobes of segment 2</td>
<td id="76E05DCFD4385FCA66BEDA9734C3FC38" box="[1767,1992,927,1016]" gridcol="6" gridrow="4" pageId="22" pageNumber="325">covered with ventral lobes of segment 2</td>
</tr>
<tr id="353134B3D4385FCA60FCDD0834C3FBD9" box="[165,1992,1024,1049]" gridrow="5" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDD0832B4FBD9" box="[165,447,1024,1049]" gridcol="0" gridrow="5" pageId="22" pageNumber="325">Lappets on segment 1</th>
<td id="76E05DCFD4385FCA61A9DD0831D7FBD9" box="[496,732,1024,1049]" gridcol="1" gridrow="5" pageId="22" pageNumber="325">short acute</td>
<td id="76E05DCFD4385FCA62A0DD0830BBFBD9" box="[761,944,1024,1049]" gridcol="2" gridrow="5" pageId="22" pageNumber="325">triangular</td>
<td id="76E05DCFD4385FCA63BBDD0837B9FBD9" box="[994,1202,1024,1049]" gridcol="3" gridrow="5" pageId="22" pageNumber="325">triangular</td>
<td id="76E05DCFD4385FCA6480DD0836A2FBD9" box="[1241,1449,1024,1049]" gridcol="4" gridrow="5" pageId="22" pageNumber="325">triangular</td>
<td id="76E05DCFD4385FCA6588DD0835B8FBD9" box="[1489,1715,1024,1049]" gridcol="5" gridrow="5" pageId="22" pageNumber="325">triangular</td>
<td id="76E05DCFD4385FCA66BEDD0834C3FBD9" box="[1767,1992,1024,1049]" gridcol="6" gridrow="5" pageId="22" pageNumber="325">triangular</td>
</tr>
<tr id="353134B3D4385FCA60FCDD2534C3FBA6" box="[165,1992,1069,1126]" gridrow="6" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDD2532B4FBA6" box="[165,447,1069,1126]" gridcol="0" gridrow="6" pageId="22" pageNumber="325">Ventro-lateral lobes on segment 2</th>
<td id="76E05DCFD4385FCA61A9DD2531D7FBA6" box="[496,732,1069,1126]" gridcol="1" gridrow="6" pageId="22" pageNumber="325">elongated with 4–5 lappets</td>
<td id="76E05DCFD4385FCA62A0DD2530BBFBA6" box="[761,944,1069,1126]" gridcol="2" gridrow="6" pageId="22" pageNumber="325">short 4–5 lappets</td>
<td id="76E05DCFD4385FCA63BBDD2537B9FBA6" box="[994,1202,1069,1126]" gridcol="3" gridrow="6" pageId="22" pageNumber="325">short with 6 lappets</td>
<td id="76E05DCFD4385FCA6480DD2536A2FBA6" box="[1241,1449,1069,1126]" gridcol="4" gridrow="6" pageId="22" pageNumber="325">short with 4–5 lap- pets</td>
<td id="76E05DCFD4385FCA6588DD2535B8FBA6" box="[1489,1715,1069,1126]" gridcol="5" gridrow="6" pageId="22" pageNumber="325">short with 7–8 lappets</td>
<td id="76E05DCFD4385FCA66BEDD2534C3FBA6" box="[1767,1992,1069,1126]" gridcol="6" gridrow="6" pageId="22" pageNumber="325">short with 7–8 lappets</td>
</tr>
<tr id="353134B3D4385FCA60FCDD6634C3FB67" box="[165,1992,1134,1191]" gridrow="7" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDD6632B4FB67" box="[165,447,1134,1191]" gridcol="0" gridrow="7" pageId="22" pageNumber="325">Ventro-lateral lobes on segment 3</th>
<td id="76E05DCFD4385FCA61A9DD6631D7FB67" box="[496,732,1134,1191]" gridcol="1" gridrow="7" pageId="22" pageNumber="325">smooth</td>
<td id="76E05DCFD4385FCA62A0DD6630BBFB67" box="[761,944,1134,1191]" gridcol="2" gridrow="7" pageId="22" pageNumber="325">with papillae</td>
<td id="76E05DCFD4385FCA63BBDD6637B9FB67" box="[994,1202,1134,1191]" gridcol="3" gridrow="7" pageId="22" pageNumber="325">smooth</td>
<td id="76E05DCFD4385FCA6480DD6636A2FB67" box="[1241,1449,1134,1191]" gridcol="4" gridrow="7" pageId="22" pageNumber="325">smooth</td>
<td id="76E05DCFD4385FCA6588DD6635B8FB67" box="[1489,1715,1134,1191]" gridcol="5" gridrow="7" pageId="22" pageNumber="325">with papillae</td>
<td id="76E05DCFD4385FCA66BEDD6634C3FB67" box="[1767,1992,1134,1191]" gridcol="6" gridrow="7" pageId="22" pageNumber="325">smooth</td>
</tr>
<tr id="353134B3D4385FCA60FCDDA734C3FB28" box="[165,1992,1199,1256]" gridrow="8" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDDA732B4FB28" box="[165,447,1199,1256]" gridcol="0" gridrow="8" pageId="22" pageNumber="325">Ventral margin of ventro- lateral lobes on segment 3</th>
<td id="76E05DCFD4385FCA61A9DDA731D7FB28" box="[496,732,1199,1256]" gridcol="1" gridrow="8" pageId="22" pageNumber="325">rounded</td>
<td id="76E05DCFD4385FCA62A0DDA730BBFB28" box="[761,944,1199,1256]" gridcol="2" gridrow="8" pageId="22" pageNumber="325">rounded</td>
<td id="76E05DCFD4385FCA63BBDDA737B9FB28" box="[994,1202,1199,1256]" gridcol="3" gridrow="8" pageId="22" pageNumber="325">rounded</td>
<td id="76E05DCFD4385FCA6480DDA736A2FB28" box="[1241,1449,1199,1256]" gridcol="4" gridrow="8" pageId="22" pageNumber="325">with triangular pro- jection</td>
<td id="76E05DCFD4385FCA6588DDA735B8FB28" box="[1489,1715,1199,1256]" gridcol="5" gridrow="8" pageId="22" pageNumber="325">rounded</td>
<td id="76E05DCFD4385FCA66BEDDA734C3FB28" box="[1767,1992,1199,1256]" gridcol="6" gridrow="8" pageId="22" pageNumber="325">rounded</td>
</tr>
<tr id="353134B3D4385FCA60FCDDE734C3FAE8" box="[165,1992,1263,1320]" gridrow="9" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDDE732B4FAE8" box="[165,447,1263,1320]" gridcol="0" gridrow="9" pageId="22" pageNumber="325">Mid-ventral lappets on segment 3</th>
<td id="76E05DCFD4385FCA61A9DDE731D7FAE8" box="[496,732,1263,1320]" gridcol="1" gridrow="9" pageId="22" pageNumber="325">rounded</td>
<td id="76E05DCFD4385FCA62A0DDE730BBFAE8" box="[761,944,1263,1320]" gridcol="2" gridrow="9" pageId="22" pageNumber="325">?</td>
<td id="76E05DCFD4385FCA63BBDDE737B9FAE8" box="[994,1202,1263,1320]" gridcol="3" gridrow="9" pageId="22" pageNumber="325">rectangular</td>
<td id="76E05DCFD4385FCA6480DDE736A2FAE8" box="[1241,1449,1263,1320]" gridcol="4" gridrow="9" pageId="22" pageNumber="325">rectangular</td>
<td id="76E05DCFD4385FCA6588DDE735B8FAE8" box="[1489,1715,1263,1320]" gridcol="5" gridrow="9" pageId="22" pageNumber="325">oblong</td>
<td id="76E05DCFD4385FCA66BEDDE734C3FAE8" box="[1767,1992,1263,1320]" gridcol="6" gridrow="9" pageId="22" pageNumber="325">oblong</td>
</tr>
<tr id="353134B3D4385FCA60FCDC3834C3FA89" box="[165,1992,1328,1353]" gridrow="10" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDC3832B4FA89" box="[165,447,1328,1353]" gridcol="0" gridrow="10" pageId="22" pageNumber="325">Neurochaetae on segments</th>
<td id="76E05DCFD4385FCA61A9DC3831D7FA89" box="[496,732,1328,1353]" gridcol="1" gridrow="10" pageId="22" pageNumber="325">8–21</td>
<td id="76E05DCFD4385FCA62A0DC3830BBFA89" box="[761,944,1328,1353]" gridcol="2" gridrow="10" pageId="22" pageNumber="325">8–21</td>
<td id="76E05DCFD4385FCA63BBDC3837B9FA89" box="[994,1202,1328,1353]" gridcol="3" gridrow="10" pageId="22" pageNumber="325">7–21</td>
<td id="76E05DCFD4385FCA6480DC3836A2FA89" box="[1241,1449,1328,1353]" gridcol="4" gridrow="10" pageId="22" pageNumber="325">8–21</td>
<td id="76E05DCFD4385FCA6588DC3835B8FA89" box="[1489,1715,1328,1353]" gridcol="5" gridrow="10" pageId="22" pageNumber="325">8–21</td>
<td id="76E05DCFD4385FCA66BEDC3834C3FA89" box="[1767,1992,1328,1353]" gridcol="6" gridrow="10" pageId="22" pageNumber="325">8–21</td>
</tr>
<tr id="353134B3D4385FCA60FCDC5534C3FAB6" box="[165,1992,1373,1398]" gridrow="11" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDC5532B4FAB6" box="[165,447,1373,1398]" gridcol="0" gridrow="11" pageId="22" pageNumber="325">Constriction before scaphe</th>
<td id="76E05DCFD4385FCA61A9DC5531D7FAB6" box="[496,732,1373,1398]" gridcol="1" gridrow="11" pageId="22" pageNumber="325">indistinct</td>
<td id="76E05DCFD4385FCA62A0DC5530BBFAB6" box="[761,944,1373,1398]" gridcol="2" gridrow="11" pageId="22" pageNumber="325">absent</td>
<td id="76E05DCFD4385FCA63BBDC5537B9FAB6" box="[994,1202,1373,1398]" gridcol="3" gridrow="11" pageId="22" pageNumber="325">absent</td>
<td id="76E05DCFD4385FCA6480DC5536A2FAB6" box="[1241,1449,1373,1398]" gridcol="4" gridrow="11" pageId="22" pageNumber="325">absent</td>
<td id="76E05DCFD4385FCA6588DC5535B8FAB6" box="[1489,1715,1373,1398]" gridcol="5" gridrow="11" pageId="22" pageNumber="325">absent</td>
<td id="76E05DCFD4385FCA66BEDC5534C3FAB6" box="[1767,1992,1373,1398]" gridcol="6" gridrow="11" pageId="22" pageNumber="325">distinct</td>
</tr>
<tr id="353134B3D4385FCA60FCDC8334C3FA64" box="[165,1992,1419,1444]" gridrow="12" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDC8332B4FA64" box="[165,447,1419,1444]" gridcol="0" gridrow="12" pageId="22" pageNumber="325">Shape of anal flap</th>
<td id="76E05DCFD4385FCA61A9DC8331D7FA64" box="[496,732,1419,1444]" gridcol="1" gridrow="12" pageId="22" pageNumber="325">vestigial oblong</td>
<td id="76E05DCFD4385FCA62A0DC8330BBFA64" box="[761,944,1419,1444]" gridcol="2" gridrow="12" pageId="22" pageNumber="325">short conical</td>
<td id="76E05DCFD4385FCA63BBDC8337B9FA64" box="[994,1202,1419,1444]" gridcol="3" gridrow="12" pageId="22" pageNumber="325">vestigial oblong</td>
<td id="76E05DCFD4385FCA6480DC8336A2FA64" box="[1241,1449,1419,1444]" gridcol="4" gridrow="12" pageId="22" pageNumber="325">vestigial oblong</td>
<td id="76E05DCFD4385FCA6588DC8335B8FA64" box="[1489,1715,1419,1444]" gridcol="5" gridrow="12" pageId="22" pageNumber="325">vestigial oblong</td>
<td id="76E05DCFD4385FCA66BEDC8334C3FA64" box="[1767,1992,1419,1444]" gridcol="6" gridrow="12" pageId="22" pageNumber="325">vestigial oblong</td>
</tr>
<tr id="353134B3D4385FCA60FCDCB034C3FA11" box="[165,1992,1464,1489]" gridrow="13" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDCB032B4FA11" box="[165,447,1464,1489]" gridcol="0" gridrow="13" pageId="22" pageNumber="325">Anal cirri</th>
<td id="76E05DCFD4385FCA61A9DCB031D7FA11" box="[496,732,1464,1489]" gridcol="1" gridrow="13" pageId="22" pageNumber="325">long</td>
<td id="76E05DCFD4385FCA62A0DCB030BBFA11" box="[761,944,1464,1489]" gridcol="2" gridrow="13" pageId="22" pageNumber="325">absent</td>
<td id="76E05DCFD4385FCA63BBDCB037B9FA11" box="[994,1202,1464,1489]" gridcol="3" gridrow="13" pageId="22" pageNumber="325">long</td>
<td id="76E05DCFD4385FCA6480DCB036A2FA11" box="[1241,1449,1464,1489]" gridcol="4" gridrow="13" pageId="22" pageNumber="325">long</td>
<td id="76E05DCFD4385FCA6588DCB035B8FA11" box="[1489,1715,1464,1489]" gridcol="5" gridrow="13" pageId="22" pageNumber="325">long</td>
<td id="76E05DCFD4385FCA66BEDCB034C3FA11" box="[1767,1992,1464,1489]" gridcol="6" gridrow="13" pageId="22" pageNumber="325">long</td>
</tr>
<tr id="353134B3D4385FCA60FCDCEE34C3FA3F" box="[165,1992,1510,1535]" gridrow="14" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDCEE32B4FA3F" box="[165,447,1510,1535]" gridcol="0" gridrow="14" pageId="22" pageNumber="325">Pairs of scaphal hooks</th>
<td id="76E05DCFD4385FCA61A9DCEE31D7FA3F" box="[496,732,1510,1535]" gridcol="1" gridrow="14" pageId="22" pageNumber="325">8</td>
<td id="76E05DCFD4385FCA62A0DCEE30BBFA3F" box="[761,944,1510,1535]" gridcol="2" gridrow="14" pageId="22" pageNumber="325">?</td>
<td id="76E05DCFD4385FCA63BBDCEE37B9FA3F" box="[994,1202,1510,1535]" gridcol="3" gridrow="14" pageId="22" pageNumber="325">7</td>
<td id="76E05DCFD4385FCA6480DCEE36A2FA3F" box="[1241,1449,1510,1535]" gridcol="4" gridrow="14" pageId="22" pageNumber="325">8</td>
<td id="76E05DCFD4385FCA6588DCEE35B8FA3F" box="[1489,1715,1510,1535]" gridcol="5" gridrow="14" pageId="22" pageNumber="325">9–12</td>
<td id="76E05DCFD4385FCA66BEDCEE34C3FA3F" box="[1767,1992,1510,1535]" gridcol="6" gridrow="14" pageId="22" pageNumber="325">9</td>
</tr>
<tr id="353134B3D4385FCA60FCDF1B34C3F9EC" box="[165,1992,1555,1580]" gridrow="15" pageId="22" pageNumber="325">
<th id="76E05DCFD4385FCA60FCDF1B32B4F9EC" box="[165,447,1555,1580]" gridcol="0" gridrow="15" pageId="22" pageNumber="325">Shape of scaphal hooks</th>
<td id="76E05DCFD4385FCA61A9DF1B31D7F9EC" box="[496,732,1555,1580]" gridcol="1" gridrow="15" pageId="22" pageNumber="325">curved</td>
<td id="76E05DCFD4385FCA62A0DF1B30BBF9EC" box="[761,944,1555,1580]" gridcol="2" gridrow="15" pageId="22" pageNumber="325">curved</td>
<td id="76E05DCFD4385FCA63BBDF1B37B9F9EC" box="[994,1202,1555,1580]" gridcol="3" gridrow="15" pageId="22" pageNumber="325">curved</td>
<td id="76E05DCFD4385FCA6480DF1B36A2F9EC" box="[1241,1449,1555,1580]" gridcol="4" gridrow="15" pageId="22" pageNumber="325">curved</td>
<td id="76E05DCFD4385FCA6588DF1B35B8F9EC" box="[1489,1715,1555,1580]" gridcol="5" gridrow="15" pageId="22" pageNumber="325">straight</td>
<td id="76E05DCFD4385FCA66BEDF1B34C3F9EC" box="[1767,1992,1555,1580]" gridcol="6" gridrow="15" pageId="22" pageNumber="325">curved</td>
</tr>
</table>
</paragraph>
<subSubSection id="C31B657AD439A022609ED991306DFDA3" pageId="23" pageNumber="326" type="discussion">
<paragraph id="8BBE36F1D439A022609ED991306DFDA3" blockId="23.[151,1437,153,611]" pageId="23" pageNumber="326">
<emphasis id="B975EAE3D439A022609ED991323FFF73" bold="true" box="[199,308,153,179]" pageId="23" pageNumber="326">Remarks</emphasis>
. 
<taxonomicName id="4C014D72D439A022611BD9923112FF73" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[322,537,153,179]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D439A022611BD9923112FF73" box="[322,537,153,179]" italics="true" pageId="23" pageNumber="326">Petta williamsonae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D439A0226278D991316BFF73" box="[545,608,153,179]" pageId="23" pageNumber="326" rank="species">
<emphasis id="B975EAE3D439A0226278D991316BFF73" bold="true" box="[545,608,153,179]" pageId="23" pageNumber="326">n. sp.</emphasis>
</taxonomicNameLabel>
can be distinguished from other species of 
<taxonomicName id="4C014D72D439A022641ED9923789FF73" authorityName="Malmgren" authorityYear="1866" box="[1095,1154,154,179]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="genus">
<emphasis id="B975EAE3D439A022641ED9923789FF73" box="[1095,1154,154,179]" italics="true" pageId="23" pageNumber="326">Petta</emphasis>
</taxonomicName>
by the following characters: cephalic veil with smooth margin and short narrow triangular anterior end; 14 pairs of paleae; pair of narrow triangular lappets on segment 1; pair of short ventro-lateral lobes on segment 2, separated from each other by a narrow deep mid-ventral groove, with 7–8 triangular lappets per lobe; ventro-lateral lobes smooth on segment 3, with rounded inner angle; neurochaetae on segments 8–21; distinct constriction between the abdomen and the scaphe; anal flap vestigial with long anal cirrus; scaphal hooks 9 pairs, slightly curved. 
<taxonomicName id="4C014D72D439A0226449D84637ECFEA7" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[1040,1255,333,359]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D439A0226449D84637ECFEA7" box="[1040,1255,333,359]" italics="true" pageId="23" pageNumber="326">Petta williamsonae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D439A02264B7D8453626FEA7" box="[1262,1325,333,359]" pageId="23" pageNumber="326" rank="species">
<emphasis id="B975EAE3D439A02264B7D8453626FEA7" bold="true" box="[1262,1325,333,359]" pageId="23" pageNumber="326">n. sp.</emphasis>
</taxonomicNameLabel>
is similar to 
<taxonomicName id="4C014D72D439A02260EFD87A321CFE4B" authorityName="Caullery" authorityYear="1944" box="[182,279,370,395]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="species" species="tenuis">
<emphasis id="B975EAE3D439A02260EFD87A321CFE4B" box="[182,279,370,395]" italics="true" pageId="23" pageNumber="326">P. tenuis</emphasis>
</taxonomicName>
from 
<collectingRegion id="49C5F813D439A0226139D8793298FE4B" box="[352,403,369,395]" country="Philippines" name="Sulu" pageId="23" pageNumber="326">Sulu</collectingRegion>
Sea, Phillipines and 
<taxonomicName id="4C014D72D439A02262D0D87A3004FE4B" baseAuthorityName="Ehlers" baseAuthorityYear="1887" box="[649,783,369,395]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="species" species="pellucida">
<emphasis id="B975EAE3D439A02262D0D87A3004FE4B" box="[649,783,369,395]" italics="true" pageId="23" pageNumber="326">P. pellucida</emphasis>
</taxonomicName>
from 
<collectingRegion id="49C5F813D439A0226301D87930C9FE4B" box="[856,962,369,395]" country="Portugal" name="Santarem" pageId="23" pageNumber="326">Santarem</collectingRegion>
Channel, Caribbean Sea as they all have smooth anterior end on cephalic veil and smooth ventro-lateral lobes on segment 3. However, 
<taxonomicName id="4C014D72D439A022649DD89E3697FE6F" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[1220,1436,405,431]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D439A022649DD89E3697FE6F" box="[1220,1436,405,431]" italics="true" pageId="23" pageNumber="326">Petta williamsonae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D439A02260CED8B133DDFE13" box="[151,214,441,467]" pageId="23" pageNumber="326" rank="species">
<emphasis id="B975EAE3D439A02260CED8B133DDFE13" bold="true" box="[151,214,441,467]" pageId="23" pageNumber="326">n. sp.</emphasis>
</taxonomicNameLabel>
differs from the last two species as 
<taxonomicName id="4C014D72D439A0226235D8B23016FE13" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[620,797,441,467]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D439A0226235D8B23016FE13" box="[620,797,441,467]" italics="true" pageId="23" pageNumber="326">P. williamsonae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D439A022637CD8B1306FFE13" box="[805,868,441,467]" pageId="23" pageNumber="326" rank="species">
<emphasis id="B975EAE3D439A022637CD8B1306FFE13" bold="true" box="[805,868,441,467]" pageId="23" pageNumber="326">n. sp.</emphasis>
</taxonomicNameLabel>
has the distinct constriction between the abdomen and the scaphe (
<tableCitation id="C683034AD439A022611ED8D53295FE37" box="[327,414,477,503]" captionStart="TABLE 2" captionStartId="22.[151,239,654,680]" captionTargetBox="[165,1992,707,1580]" captionText="TABLE 2. A summary of comparative diagnostic characters for the species of the genus Petta species as used in this study." httpUri="http://table.plazi.org/id/DF7E6679D438A02360CEDB8636B2FD68" pageId="23" pageNumber="326" tableUuid="DF7E6679D438A02360CEDB8636B2FD68">Table 2</tableCitation>
). 
<taxonomicName id="4C014D72D439A02261E8D8D6318CFE37" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[433,647,477,503]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D439A02261E8D8D6318CFE37" box="[433,647,477,503]" italics="true" pageId="23" pageNumber="326">Petta williamsonae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D439A02262D4D8D531C0FE37" box="[653,715,477,503]" pageId="23" pageNumber="326" rank="species">
<emphasis id="B975EAE3D439A02262D4D8D531C0FE37" bold="true" box="[653,715,477,503]" pageId="23" pageNumber="326">n. sp.</emphasis>
</taxonomicNameLabel>
differs from 
<taxonomicName id="4C014D72D439A0226305D8D63705FE37" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[860,1038,478,503]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="species" species="investigatoris" status="sp. nov.">
<emphasis id="B975EAE3D439A0226305D8D63705FE37" box="[860,1038,478,503]" italics="true" pageId="23" pageNumber="326">P. investigatoris</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D439A022644CD8D53759FE37" box="[1045,1106,477,503]" pageId="23" pageNumber="326" rank="species">
<emphasis id="B975EAE3D439A022644CD8D53759FE37" bold="true" box="[1045,1106,477,503]" pageId="23" pageNumber="326">n. sp.</emphasis>
</taxonomicNameLabel>
from Australian waters as the latter has continuous papillae on the ventro-lateral lobes of segment 3 and the scaphe is not clearly separated from posterior segments, and also 
<taxonomicName id="4C014D72D439A02261B8DB2E3199FDFF" authority="Zhang &amp; Hutchings &amp; Kupriyanova, 2019" authorityName="Zhang &amp; Hutchings &amp; Kupriyanova" authorityYear="2019" box="[481,658,549,575]" class="Polychaeta" family="Pectinariidae" genus="Petta" kingdom="Animalia" order="Terebellida" pageId="23" pageNumber="326" phylum="Annelida" rank="species" species="williamsonae" status="sp. nov.">
<emphasis id="B975EAE3D439A02261B8DB2E3199FDFF" box="[481,658,549,575]" italics="true" pageId="23" pageNumber="326">P. williamsonae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2465798D439A02262C2DB2D31D0FDFF" box="[667,731,549,575]" pageId="23" pageNumber="326" rank="species">
<emphasis id="B975EAE3D439A02262C2DB2D31D0FDFF" bold="true" box="[667,731,549,575]" pageId="23" pageNumber="326">n. sp.</emphasis>
</taxonomicNameLabel>
has a smooth margin on the ventro-lateral lobes of segment 3 and a distinct constriction between the abdomen and the scaphe.
</paragraph>
</subSubSection>
</treatment>
</document>