391 lines
65 KiB
XML
391 lines
65 KiB
XML
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<mods:title id="07AE6C460B87850B19E592C96EADCBFC">Integrative taxonomy of West African Magelona (Annelida: Magelonidae): species with thoracic pigmentation</mods:title>
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<mods:namePart id="588FCACB068399A916CCD5DE44066AD0">Mortimer, Kate</mods:namePart>
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<mods:namePart id="9C93C453C5EEAA6F1B0AED6F0ACDD058">Kongsrud, Jon Anders</mods:namePart>
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<mods:namePart id="007CA08C1674C0D0692C5A9F938E9B3A">Willassen, Endre</mods:namePart>
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<mods:title id="B3DEEA14808731156A1838DF64CE2EB4">Zoological Journal of the Linnean Society</mods:title>
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<mods:date id="065A2FD4D9C7423E993CF093FD9508C4">2022</mods:date>
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<mods:number id="8E5A1792A46CFA08246F1EA3863B22E3">2021-10-22</mods:number>
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<treatment id="039087DBFFEAFFF8424374FBFAFEFBC4" ID-DOI="http://doi.org/10.5281/zenodo.6459434" ID-GBIF-Taxon="194594531" ID-Zenodo-Dep="6459434" LSID="urn:lsid:plazi:treatment:039087DBFFEAFFF8424374FBFAFEFBC4" httpUri="http://treatment.plazi.org/id/039087DBFFEAFFF8424374FBFAFEFBC4" lastPageId="26" lastPageNumber="1160" pageId="23" pageNumber="1157">
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<taxonomicName id="4C394D4EFFEAFFF5424374FBFDFFFC4D" ID-CoL="8SM2D" authority="Mortimer & Kongsrud & Willassen, 2022" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[277,523,996,1019]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="23" pageNumber="1159" phylum="Annelida" rank="species" species="nanseni" status="sp. nov.">MAGELONA NANSENI</taxonomicName>
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<taxonomicNameLabel id="A27E57A4FFEAFFF5414474F8FD81FC4C" box="[530,629,995,1019]" pageId="23" pageNumber="1157" rank="species">SP. NOV.</taxonomicNameLabel>
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<subSubSection id="C3236546FFEAFFF8422D7315FAFEFBC4" lastPageId="26" lastPageNumber="1160" pageId="23" pageNumber="1157" type="description">
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<paragraph id="8B8636CDFFEAFFF5422D7315FDFAFB94" blockId="23.[379,526,1034,1059]" box="[379,526,1034,1059]" pageId="23" pageNumber="1157">
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(
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,
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<figureCitation id="13022A48FFEAFFF542BC7315FDF2FB94" box="[490,518,1034,1059]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="23" pageNumber="1157">12</figureCitation>
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)
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<emphasis id="B94DEADFFFEAFFF543C7732CFE22FBFF" box="[145,470,1074,1096]" italics="true" pageId="23" pageNumber="1157">Z o o b a n k r e g i s t r a t i o n:</emphasis>
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u r n: l s i d: z o o b a n k. org:act:
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locality:
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depth
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: St. 5N–11, af in 75%
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(
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:
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<collectingCountry id="F32E765DFFEAFFF541377213FD31FA95" box="[609,709,1292,1314]" name="Liberia" pageId="23" pageNumber="1157">Liberia</collectingCountry>
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:
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<location id="8EE66016FFEAFFF5418E7213FD0CFA96" LSID="urn:lsid:plazi:treatment:039087DBFFEAFFF8424374FBFAFEFBC4:8EE66016FFEAFFF5418E7213FD0CFA96" box="[728,760,1292,1313]" country="Liberia" municipality="Etoh" name="St." pageId="23" pageNumber="1157">St.</location>
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7LI–01, 1af in 75%
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(
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)
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</materialsCitation>
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; St. 7LI–04, 1af in 75%Etoh (NMW.Z.2021.001.0006);
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<materialsCitation id="3B513C90FFEAFFF541237256FD00FAC9" ID-GBIF-Occurrence="3751355309" collectionCode="ZMBN" country="Ghana" location="St." municipality="Etoh" pageId="23" pageNumber="1157" specimenCode="ZMBN107275" specimenCount="1" typeStatus="paratype">
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<collectingCountry id="F32E765DFFEAFFF541237256FD3FFAE8" box="[629,715,1353,1375]" name="Ghana" pageId="23" pageNumber="1157">Ghana</collectingCountry>
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:
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<location id="8EE66016FFEAFFF5418F7256FD0CFAE9" LSID="urn:lsid:plazi:treatment:039087DBFFEAFFF8424374FBFAFEFBC4:8EE66016FFEAFFF5418F7256FD0CFAE9" box="[729,760,1353,1374]" country="Ghana" municipality="Etoh" name="St." pageId="23" pageNumber="1157">St.</location>
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2009105–GP1/28, 1af in 75%
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<collectingMunicipality id="6BE2ACB7FFEAFFF542A37277FDDBFAC9" box="[501,559,1384,1406]" pageId="23" pageNumber="1157">Etoh</collectingMunicipality>
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(
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<specimenCode id="DB9F9EB6FFEAFFF541177277FD18FAC9" box="[577,748,1384,1406]" collectionCode="ZMBN" country="Norway" httpUri="http://grbio.org/cool/0tqf-efed" name="Museum of Zoology at the University of Bergen, Invertebrate Collection" pageId="23" pageNumber="1157">ZMBN107275</specimenCode>
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;
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<location id="8EE66016FFEAFFF543C77298FF44FA2B" LSID="urn:lsid:plazi:treatment:039087DBFFEAFFF8424374FBFAFEFBC4:8EE66016FFEAFFF543C77298FF44FA2B" box="[145,176,1415,1436]" country="Ghana" municipality="Etoh" name="St." pageId="23" pageNumber="1157">St.</location>
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2009105–GE1/28, 5af in 75%
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<collectingMunicipality id="6BE2ACB7FFEAFFF541527299FDCFFA2B" box="[516,571,1414,1436]" pageId="23" pageNumber="1157">Etoh</collectingMunicipality>
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(
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)
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.
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<materialsCitation id="3B513C90FFEAFFF543C772BAFEC1FA6D" ID-GBIF-Occurrence="3751355382" collectionCode="ZMBN" country="Nigeria" location="St." municipality="Etoh" pageId="23" pageNumber="1157" specimenCode="ZMBN107336" specimenCount="1" typeStatus="paratype">
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<collectingCountry id="F32E765DFFEAFFF543C772BAFF00FA0C" box="[145,244,1445,1467]" name="Nigeria" pageId="23" pageNumber="1157">Nigeria</collectingCountry>
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:
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5N–11, 1af in 96%
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|
||
(
|
||
<specimenCode id="DB9F9EB6FFEAFFF5411972BAFD00FA0C" box="[591,756,1445,1467]" collectionCode="ZMBN" country="Norway" httpUri="http://grbio.org/cool/0tqf-efed" name="Museum of Zoology at the University of Bergen, Invertebrate Collection" pageId="23" pageNumber="1157">ZMBN107336</specimenCode>
|
||
, DNA-voucher)
|
||
</materialsCitation>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFEAFFF543C7711DFE47F924" blockId="23.[145,761,1538,1683]" pageId="23" pageNumber="1157">
|
||
<emphasis id="B94DEADFFFEAFFF543C7711DFEE7F9A0" box="[145,275,1538,1559]" italics="true" pageId="23" pageNumber="1157">Etymology:</emphasis>
|
||
The new species is named in honour of the zoologist and oceanographer Dr Fridtjof Nansen, whose name is also linked with the research vessel from which all samples from West Africa included in this paper were collected.
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFEAFFF543C771A3FB14FE80" blockId="23.[145,761,1724,1899]" lastBlockId="23.[809,1425,197,311]" pageId="23" pageNumber="1157">
|
||
<emphasis id="B94DEADFFFEAFFF543C771A3FEE3F966" box="[145,279,1724,1745]" italics="true" pageId="23" pageNumber="1157">Diagnosis:</emphasis>
|
||
Prostomium wider than long, with rudimentary prostomial horns. Chaetigers 1–8 with slender foliaceous notopodial lamellae, with long, superior dorsal lobes and slender, triangular neuropodial lamellae. Lamellae of chaetiger 9 triangular postchaetal in both rami. All thoracic chaetae capillary. Abdominal lateral lamellae basally constricted and spatulate, with pointed tips. Abdominal hooded hooks tridentate, in two groups,
|
||
<emphasis id="B94DEADFFFEAFFF54656761CFA95FEAF" box="[1280,1377,259,280]" italics="true" pageId="23" pageNumber="1157">vis-à-vis</emphasis>
|
||
. No pouches observed, pygidium unknown.
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFEAFFF5407F7647FAD8FCAC" blockId="23.[809,1426,344,1899]" pageId="23" pageNumber="1157">
|
||
<emphasis id="B94DEADFFFEAFFF5407F7647FC45FEDA" box="[809,945,344,365]" italics="true" pageId="23" pageNumber="1157">Description:</emphasis>
|
||
A stout species; junction between thorax and abdomen noticeable, although not distinctly marked (
|
||
<figureCitation id="13022A48FFEAFFF540C6768AFC01FE1D" box="[912,1013,405,427]" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="23" pageNumber="1157">Figs 11A</figureCitation>
|
||
,
|
||
<figureCitation id="13022A48FFEAFFF54755768AFBC4FE1D" box="[1027,1072,405,426]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="23" pageNumber="1157">12B</figureCitation>
|
||
), abdomen more rounded than thorax.
|
||
<typeStatus id="5482886FFFEAFFF540DD76ABFC0FFE7D" box="[907,1019,436,458]" pageId="23" pageNumber="1157" type="holotype">Holotype</typeStatus>
|
||
, anterior fragment: prostomium 1.0 mm wide,
|
||
<quantity id="4CC19B28FFEAFFF5408176CDFBB5FE5F" box="[983,1089,466,488]" metricMagnitude="-4" metricUnit="m" metricValue="8.5" pageId="23" pageNumber="1157" unit="mm" value="0.85">0.85 mm</quantity>
|
||
long; thorax
|
||
<quantity id="4CC19B28FFEAFFF547BC76CDFAA7FE5F" box="[1258,1363,466,488]" metricMagnitude="-3" metricUnit="m" metricValue="5.75" pageId="23" pageNumber="1157" unit="mm" value="5.75">5.75 mm</quantity>
|
||
long (including prostomium),
|
||
<quantity id="4CC19B28FFEAFFF5470776EEFB5DFDB0" box="[1105,1193,497,519]" metricMagnitude="-3" metricUnit="m" metricValue="1.1" pageId="23" pageNumber="1157" unit="mm" value="1.1">1.1 mm</quantity>
|
||
wide (at its widest point, approximately chaetiger 6); abdomen
|
||
<quantity id="4CC19B28FFEAFFF5466E750FFA64FD92" box="[1336,1424,528,549]" metricMagnitude="-4" metricUnit="m" metricValue="9.0" pageId="23" pageNumber="1157" unit="mm" value="0.9">0.9 mm</quantity>
|
||
wide; total length approximately
|
||
<quantity id="4CC19B28FFEAFFF547917531FACBFDF3" box="[1223,1343,558,580]" metricMagnitude="-2" metricUnit="m" metricValue="1.325" pageId="23" pageNumber="1157" unit="mm" value="13.25">13.25 mm</quantity>
|
||
for 26 chaetigers. (NB last chaetiger of
|
||
<typeStatus id="5482886FFFEAFFF547E07552FAEFFDD4" box="[1206,1307,589,611]" pageId="23" pageNumber="1157" type="holotype">holotype</typeStatus>
|
||
dissected and slide-mounted. Width measurements not including parapodia.) Thorax tapering towards abdomen from approximately chaetiger 7. Additional anterior fragment (ZMBN107336)
|
||
<quantity id="4CC19B28FFEAFFF547EE75D7FAFAFD6A" box="[1208,1294,712,733]" metricMagnitude="-3" metricUnit="m" metricValue="4.8" pageId="23" pageNumber="1157" unit="mm" value="4.8">4.8 mm</quantity>
|
||
long for 11 chaetigers, approximately
|
||
<quantity id="4CC19B28FFEAFFF5470575F9FB52FD4B" box="[1107,1190,742,764]" metricMagnitude="-4" metricUnit="m" metricValue="8.0" pageId="23" pageNumber="1157" unit="mm" value="0.8">0.8 mm</quantity>
|
||
wide. Other anterior fragments
|
||
<quantity id="4CC19B28FFEAFFF540F2741AFBC3FCAD" box="[932,1079,773,795]" metricMagnitude="-3" metricUnit="m" metricValue="8.5" metricValueMax="11.5" metricValueMin="5.5" pageId="23" pageNumber="1157" unit="mm" value="8.5" valueMax="11.5" valueMin="5.5">5.5–11.5 mm</quantity>
|
||
for 14–20 chaetigers.
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFEAFFF54017743BFA9BF9C2" blockId="23.[809,1426,344,1899]" pageId="23" pageNumber="1157">
|
||
Prostomium rounded laterally (
|
||
<figureCitation id="13022A48FFEAFFF547FE743BFADFFC8E" box="[1192,1323,804,826]" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="23" pageNumber="1157">Figs 11A, B</figureCitation>
|
||
,
|
||
<figureCitation id="13022A48FFEAFFF5466E743BFA76FC8E" box="[1336,1410,804,825]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="23" pageNumber="1157">12A–F</figureCitation>
|
||
), wider than long (L: W ratio 0.85). Proximal prostomial corners extend around bases of palps towards ventral surface (
|
||
<figureCitation id="13022A48FFEAFFF540DD749FFBDFFC22" box="[907,1067,896,918]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="23" pageNumber="1157">Fig. 12B, E, H</figureCitation>
|
||
). Distally, prostomium squared into ‘rudimentary horns’, anterior margin roughly straight but with a small, medial rise on
|
||
<typeStatus id="5482886FFFEAFFF547A074A2FAACFC64" box="[1270,1368,957,979]" pageId="23" pageNumber="1157" type="holotype">holotype</typeStatus>
|
||
. One pair of distinct, longitudinal, dorsal muscular prostomial ridges, thick and abutting for majority of length, although diverging for distal quarter. No obvious outer pair of ridges. Distinct arched markings either side of ridges, becoming smaller transverse markings towards distal tip. Small, white speckles present sporadically on surface of prostomial markings. Burrowing organ partially everted in
|
||
<specimenCount id="9D3FFD44FFEAFFF5477573ACFB33FB7F" box="[1059,1223,1202,1224]" pageId="23" pageNumber="1157" type="generic">one specimen</specimenCount>
|
||
(ZMBN107336), oval with light longitudinal stripes inferiorly. Buccal region on ventral side of prostomium comprised of three lips: a larger triangular upper lip, surmounting two smaller lateral lips (
|
||
<figureCitation id="13022A48FFEAFFF547107232FB31FAF5" box="[1094,1221,1325,1347]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="23" pageNumber="1157">Fig. 12B, E</figureCitation>
|
||
), inner surface of which is heavily speckled, cream/yellow in colour. Palps retained on
|
||
<specimenCount id="9D3FFD44FFEAFFF540E67274FBB2FA37" box="[944,1094,1386,1408]" pageId="23" pageNumber="1157" type="generic">one specimen</specimenCount>
|
||
(ZMBN107336, RH palp now detached but present in vial), thick, short and appearing frilly due to length and abundance of papillae. Palps approximately
|
||
<quantity id="4CC19B28FFEAFFF540BE72D8FBDBFA6B" box="[1000,1071,1479,1500]" metricMagnitude="-3" metricUnit="m" metricValue="7.0" pageId="23" pageNumber="1157" unit="mm" value="7.0">7 mm</quantity>
|
||
long, non-papillated region reaching approximately chaetiger 3. Papillae long, proximally five rows either side of an inconspicuous mid-palp line, devoid of papillae, four rows either side medially and two rows distally. Only palp stumps either side of buccal region retained on
|
||
<typeStatus id="5482886FFFEAFFF547C17140FB02F9C2" box="[1175,1270,1631,1653]" pageId="23" pageNumber="1157" type="holotype">holotype</typeStatus>
|
||
(
|
||
<figureCitation id="13022A48FFEAFFF546527140FA95F9C2" box="[1284,1377,1631,1653]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="23" pageNumber="1157">Fig. 12E</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFEAFFF840177161FD63FE06" blockId="23.[809,1426,344,1899]" lastBlockId="26.[163,779,197,1139]" lastPageId="26" lastPageNumber="1160" pageId="23" pageNumber="1157">
|
||
Achaetous region behind the prostomium, roughly twice the length of chaetiger 1 (
|
||
<figureCitation id="13022A48FFEAFFF547C97182FAF3F905" box="[1183,1287,1693,1715]" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="23" pageNumber="1157">Figs 11A</figureCitation>
|
||
,
|
||
<figureCitation id="13022A48FFEAFFF546407182FA75F905" box="[1302,1409,1693,1714]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="23" pageNumber="1157">12A, C, F</figureCitation>
|
||
). Chaetigers 1–8 similar; parapodia biramous (
|
||
<figureCitation id="13022A48FFEAFFF5463571A4FC8BF958" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="23" pageNumber="1157">Fig. 11C–M</figureCitation>
|
||
). Notopodia with low, rounded, prechaetal lamellae confluent with slender, smooth-edged, foliaceous, postchaetal lamellae with rounded tips, of similar size along thorax. Those of chaetiger 8 slightly more foliaceous, with pointier tips. Single, long, tapering, superior dorsal lobe present on all thoracic chaetigers, except chaetiger 9, decreasing slightly in size in posterior thorax. Neuropodia with low pre- and postchaetal lamellae, encircling chaetae cufflike and confluent with slender, triangular lamellae, directly under chaetae (
|
||
<figureCitation id="13022A48FFE7FFF842E77641FDD8FEC3" box="[433,556,350,372]" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="26" pageNumber="1160">Fig. 11D, F</figureCitation>
|
||
), decreasing in size in posterior thorax. Initially slightly prechaetal but becoming completely ventral by chaetiger 4.
|
||
</paragraph>
|
||
<caption id="DF466645FFE5FFFA43F57191FBF0F8E3" ID-DOI="http://doi.org/10.5281/zenodo.6459436" ID-Zenodo-Dep="6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="24" pageNumber="1158" startId="24.[163,242,1678,1700]" targetBox="[290,1315,212,1622]" targetPageId="24">
|
||
<paragraph id="8B8636CDFFE5FFFA43F57191FBF0F8E3" blockId="24.[163,1444,1678,1876]" pageId="24" pageNumber="1158">
|
||
<emphasis id="B94DEADFFFE5FFFA43F57191FEEDF914" bold="true" box="[163,281,1678,1700]" pageId="24" pageNumber="1158">Figure 11.</emphasis>
|
||
<emphasis id="B94DEADFFFE5FFFA42727191FE19F913" box="[292,493,1678,1700]" italics="true" pageId="24" pageNumber="1158">
|
||
<taxonomicName id="4C394D4EFFE5FFFA42727191FE1DF913" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[292,489,1678,1700]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="24" pageNumber="1158" phylum="Annelida" rank="species" species="nanseni">Magelona nanseni</taxonomicName>
|
||
.
|
||
</emphasis>
|
||
Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view).
|
||
</paragraph>
|
||
</caption>
|
||
<caption id="DF466645FFE4FFFB43C771CCFA66F8F6" ID-DOI="http://doi.org/10.5281/zenodo.6459438" ID-Zenodo-Dep="6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="25" pageNumber="1159" startId="25.[145,223,1747,1769]" targetBox="[250,1319,195,1707]" targetPageId="25">
|
||
<paragraph id="8B8636CDFFE4FFFB43C771CCFA66F8F6" blockId="25.[145,1426,1747,1857]" pageId="25" pageNumber="1159">
|
||
<emphasis id="B94DEADFFFE4FFFB43C771CCFEF1F95F" bold="true" box="[145,261,1747,1769]" pageId="25" pageNumber="1159">Figure 12.</emphasis>
|
||
<taxonomicName id="4C394D4EFFE4FFFB424671CCFE3AF95E" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[272,462,1747,1769]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="25" pageNumber="1159" phylum="Annelida" rank="species" species="nanseni">
|
||
<emphasis id="B94DEADFFFE4FFFB424671CCFE3AF95E" box="[272,462,1747,1769]" italics="true" pageId="25" pageNumber="1159">Magelona nanseni</emphasis>
|
||
</taxonomicName>
|
||
. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8B8636CDFFE7FFF843ED76A5FD1BFD53" blockId="26.[163,779,197,1139]" pageId="26" pageNumber="1160">
|
||
Chaetiger 9: shorter and narrower than preceding chaetigers (
|
||
<figureCitation id="13022A48FFE7FFF8426276C6FE54FE59" box="[308,416,473,495]" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="26" pageNumber="1160">Figs 11A</figureCitation>
|
||
,
|
||
<figureCitation id="13022A48FFE7FFF842E476C6FE15FE59" box="[434,481,473,494]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="26" pageNumber="1160">12B</figureCitation>
|
||
). Notopodial prechaetal lamellae low, confluent with larger, slender, triangular, postchaetal lamellae, of similar length to preceding chaetigers (
|
||
<figureCitation id="13022A48FFE7FFF8426B752AFE58FDFD" box="[317,428,565,587]" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="26" pageNumber="1160">Fig. 11N</figureCitation>
|
||
). No superior dorsal lobes observed. Neuropodia similar, but chaetae emerging below postchaetal lamellae from low inferior ridge. Occasionally inferior edge of ridge slightly raised but never appearing as a distinct process. Chaetae of chaetigers 1–9 simple bilimbate, winged capillaries.
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFE7FFF843ED75F2FD58FBC4" blockId="26.[163,779,197,1139]" pageId="26" pageNumber="1160">
|
||
Parapodia of abdominal chaetigers (
|
||
<figureCitation id="13022A48FFE7FFF8413475F2FD32FCB5" box="[610,710,749,771]" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="26" pageNumber="1160">Fig. 11O</figureCitation>
|
||
) with broad, spatulate, lateral lamellae with pointed tips, of similar size in both rami. Basally constricted, but with no obvious postchaetal expansion behind chaetal rows. Small, triangular processes (DML, VML) observed at inner margins of chaetal rows. Abdominal chaetae tridentate hooded hooks (
|
||
<figureCitation id="13022A48FFE7FFF8428274BAFDC1FC0D" box="[468,565,933,955]" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="26" pageNumber="1160">Fig. 11P</figureCitation>
|
||
) of a similar size, superior two fangs parallel, above main fang. Hooks in two approximately equal groups for each ramus, main fangs
|
||
<emphasis id="B94DEADFFFE7FFF843BA731EFEBBFBA1" box="[236,335,1025,1046]" italics="true" pageId="26" pageNumber="1160">vis-à-vis</emphasis>
|
||
(
|
||
<figureCitation id="13022A48FFE7FFF84237731EFE33FBA1" box="[353,455,1025,1047]" captionStart="Figure 11" captionStartId="24.[163,242,1678,1700]" captionTargetBox="[290,1315,212,1622]" captionTargetId="figure-24@24.[289,1316,195,1638]" captionTargetPageId="24" captionText="Figure 11. Magelona nanseni. Holotype (Nigeria St. 5N–11) (A–O, fluid preserved specimen; P, dissected chaetiger, slide mounted, ZMBN132141): A, anterior region (dorsal view); B, prostomium (dorsal view); C, parapodium of chaetiger 1 (anterior view); D, ventral neuropodial lamella of chaetiger 1 (ventral view); E, parapodium of chaetiger 2 (anterior view); F, ventral neuropodial lamella of chaetiger 2 (ventral view); G, H, parapodia of chaetigers 3–4 (anterior views); I, neuropodia of chaetiger 5 (anterior view); J–K, notopodium and neuropodium of chaetiger 6, respectively (anterior views, from opposing parapodia of the same chaetiger); L–O, parapodia of chaetigers 7, 8, 9 and 13, respectively (anterior views); P, abdominal tridentate hooded hook from the notopodium of chaetiger 26 (oblique frontal view)." figureDoi="http://doi.org/10.5281/zenodo.6459436" httpUri="https://zenodo.org/record/6459436/files/figure.png" pageId="26" pageNumber="1160">Fig. 11O</figureCitation>
|
||
). Approximately ten hooks per ramus in the anterior abdomen. No abdominal pouches observed, but material only possessing up to 26 abdominal chaetigers. Pygidium unknown.
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFE7FFF843F57383FD44F9C9" blockId="26.[163,779,1180,1662]" pageId="26" pageNumber="1160">
|
||
<emphasis id="B94DEADFFFE7FFF843F57383FF08FB06" box="[163,252,1180,1201]" italics="true" pageId="26" pageNumber="1160">Colour:</emphasis>
|
||
No living material observed. Preserved specimens cream in colour, faint reddish to brown pigment present in the posterior thorax, between chaetigers 5–8 (
|
||
<figureCitation id="13022A48FFE7FFF8423273E7FE1FFABA" box="[356,491,1272,1294]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="26" pageNumber="1160">Fig. 12A, B</figureCitation>
|
||
). Pigmentation slightly darker in 96 % ethanol preserved specimen (ZMBN107336), particularly ventrally. Pigmentation of freshly preserved specimens unknown, pigment is likely to have faded to some degree for the
|
||
<typeStatus id="5482886FFFE7FFF841F1726DFCFFFA3F" box="[679,779,1394,1416]" pageId="26" pageNumber="1160" type="holotype">holotype</typeStatus>
|
||
after 13 years of preservation. Obvious elongate, yellow, dorsal patches (glandular?) present between chaetigers 1–5, adjacent to parapodia and either side of the middorsal line (
|
||
<figureCitation id="13022A48FFE7FFF8427972F2FE45F9B5" box="[303,433,1517,1539]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="26" pageNumber="1160">Fig. 12A, C</figureCitation>
|
||
). Staining with methyl green (
|
||
<figureCitation id="13022A48FFE7FFF843FD7113FEDFF996" box="[171,299,1548,1570]" captionStart="Figure 12" captionStartId="25.[145,223,1747,1769]" captionTargetBox="[250,1319,195,1707]" captionTargetId="figure-25@25.[250,1319,195,1707]" captionTargetPageId="25" captionText="Figure 12. Magelona nanseni. Holotype (Nigeria St. 5N–11, ZMBN132141): A, B, anterior region (dorsal and ventral views, respectively, pigmentation in posterior thorax visible); C, prostomium and first four chaetigers (dorsal view, showing dorsal speckled regions); D, E, anterior region (dorsal and ventral views, respectively); F, prostomium and first four chaetigers (dorsal view); G, H, anterior region (posterolateral and anterolateral views, respectively). D–H, stained with methyl green." figureDoi="http://doi.org/10.5281/zenodo.6459438" httpUri="https://zenodo.org/record/6459438/files/figure.png" pageId="26" pageNumber="1160">Fig. 12D–H</figureCitation>
|
||
) shows no distinct pattern, just weak stain all over. However, speckled areas of the prostomium, thoracic region, as well as interparapodial abdominal patches, more noticeable in stained specimens.
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFE7FFF843F571B9FF0EF94E" blockId="26.[163,778,1702,1786]" pageId="26" pageNumber="1160">
|
||
<emphasis id="B94DEADFFFE7FFF843F571B9FEC0F90C" box="[163,308,1702,1723]" italics="true" pageId="26" pageNumber="1160">Distribution:</emphasis>
|
||
Only known from five stations, off three countries,
|
||
<collectingCountry id="F32E765DFFE7FFF8427771DAFE8CF96C" box="[289,376,1733,1755]" name="Liberia" pageId="26" pageNumber="1160">Liberia</collectingCountry>
|
||
to
|
||
<collectingCountry id="F32E765DFFE7FFF842F771DAFE09F96C" box="[417,509,1733,1755]" name="Nigeria" pageId="26" pageNumber="1160">Nigeria</collectingCountry>
|
||
, at depths of
|
||
<quantity id="4CC19B28FFE7FFF841F271DAFCFDF96D" box="[676,777,1733,1755]" metricMagnitude="1" metricUnit="m" metricValue="2.7" metricValueMax="2.9" metricValueMin="2.5" pageId="26" pageNumber="1160" unit="m" value="27.0" valueMax="29.0" valueMin="25.0">25–29 m</quantity>
|
||
(
|
||
<figureCitation id="13022A48FFE7FFF843FD71FBFF1EF94E" box="[171,234,1764,1786]" captionStart="Figure 1" captionStartId="2.[161,240,1678,1700]" captionTargetBox="[268,1339,197,1637]" captionTargetId="figure-78@2.[266,1339,195,1639]" captionTargetPageId="2" captionText="Figure 1. Map showing the MIWA sampling area between Morocco in the north and Angola in the south, indicating the position of all sampling stations and current known distributions and depths for all magelonid species carrying posterior thoracic pigmentation off the western and southern coasts of Africa." figureDoi="http://doi.org/10.5281/zenodo.6459406" httpUri="https://zenodo.org/record/6459406/files/figure.png" pageId="26" pageNumber="1160">Fig. 1</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFE7FFF843F5703DFB6FFD9B" blockId="26.[163,779,1826,1910]" lastBlockId="26.[827,1444,197,1139]" pageId="26" pageNumber="1160">
|
||
<emphasis id="B94DEADFFFE7FFF843F5703DFEF9F880" box="[163,269,1826,1847]" italics="true" pageId="26" pageNumber="1160">Remarks:</emphasis>
|
||
This new species can be distinguished from all other pigmented magelonid species within the MIWA region based on the following characters. In possessing thoracic superior dorsal lobes,
|
||
<taxonomicName id="4C394D4EFFE7FFF847CE77D9FAE2FF6C" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[1176,1302,198,219]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="nanseni">
|
||
<emphasis id="B94DEADFFFE7FFF847CE77D9FAE2FF6C" box="[1176,1302,198,219]" italics="true" pageId="26" pageNumber="1160">M. nanseni</emphasis>
|
||
</taxonomicName>
|
||
differs from
|
||
<taxonomicName id="4C394D4EFFE7FFF8406D77FBFC50FF4E" authorityName="Wilson" authorityYear="1958" box="[827,932,228,249]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="alleni">
|
||
<emphasis id="B94DEADFFFE7FFF8406D77FBFC50FF4E" box="[827,932,228,249]" italics="true" pageId="26" pageNumber="1160">M. alleni</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C394D4EFFE7FFF840B477FBFB91FF4E" box="[994,1125,228,249]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="fasciata">
|
||
<emphasis id="B94DEADFFFE7FFF840B477FBFB91FF4E" box="[994,1125,228,249]" italics="true" pageId="26" pageNumber="1160">M. fasciata</emphasis>
|
||
</taxonomicName>
|
||
, in which they are absent. In possessing tridentate abdominal hooks, it further differs from
|
||
<taxonomicName id="4C394D4EFFE7FFF8409C763DFBBEFE81" box="[970,1098,289,311]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="fasciata">
|
||
<emphasis id="B94DEADFFFE7FFF8409C763DFBBEFE81" box="[970,1098,289,311]" italics="true" pageId="26" pageNumber="1160">M. fasciata</emphasis>
|
||
</taxonomicName>
|
||
and, additionally,
|
||
<taxonomicName id="4C394D4EFFE7FFF84649763DFA69FE81" box="[1311,1437,289,311]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="mackiei">
|
||
<emphasis id="B94DEADFFFE7FFF84649763DFA69FE81" box="[1311,1437,289,311]" italics="true" pageId="26" pageNumber="1160">M. mackiei</emphasis>
|
||
</taxonomicName>
|
||
, in which they are bidentate. It also differs from the latter two species and
|
||
<taxonomicName id="4C394D4EFFE7FFF8471B7640FB5BFEC3" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[1101,1199,351,372]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="picta">
|
||
<emphasis id="B94DEADFFFE7FFF8471B7640FB5BFEC3" box="[1101,1199,351,372]" italics="true" pageId="26" pageNumber="1160">M. picta</emphasis>
|
||
</taxonomicName>
|
||
in not having small processes below the chaetal bundles in the neuropodia of chaetiger 9. Of the MIWA species,
|
||
<taxonomicName id="4C394D4EFFE7FFF846567683FA71FE06" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[1280,1413,412,433]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="nanseni">
|
||
<emphasis id="B94DEADFFFE7FFF846567683FA71FE06" box="[1280,1413,412,433]" italics="true" pageId="26" pageNumber="1160">M. nanseni</emphasis>
|
||
</taxonomicName>
|
||
is closest to
|
||
<taxonomicName id="4C394D4EFFE7FFF840F176A4FBF6FE67" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[935,1026,443,464]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="picta">
|
||
<emphasis id="B94DEADFFFE7FFF840F176A4FBF6FE67" box="[935,1026,443,464]" italics="true" pageId="26" pageNumber="1160">M. picta</emphasis>
|
||
</taxonomicName>
|
||
, as noted above, but differs in having less foliaceous notopodial lamellae in the thorax, more basally constricted abdominal lamellae and in terms of body pigmentation (see above).
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFE7FFF84005752AFBA0FC96" blockId="26.[827,1444,197,1139]" pageId="26" pageNumber="1160">
|
||
Of the other magelonid species known to carry posterior thoracic pigmentation,
|
||
<taxonomicName id="4C394D4EFFE7FFF8479E754BFAB8FDDE" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[1224,1356,596,617]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="nanseni">
|
||
<emphasis id="B94DEADFFFE7FFF8479E754BFAB8FDDE" box="[1224,1356,596,617]" italics="true" pageId="26" pageNumber="1160">M. nanseni</emphasis>
|
||
</taxonomicName>
|
||
differs from
|
||
<taxonomicName id="4C394D4EFFE7FFF840D2756CFC0BFD3F" authorityName="Fauvel" authorityYear="1936" box="[900,1023,627,648]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="cincta">
|
||
<emphasis id="B94DEADFFFE7FFF840D2756CFC0BFD3F" box="[900,1023,627,648]" italics="true" pageId="26" pageNumber="1160">M. cincta</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C394D4EFFE7FFF84743756CFB1DFD30" box="[1045,1257,626,648]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="equilamellae">
|
||
<emphasis id="B94DEADFFFE7FFF84743756CFB1DFD30" box="[1045,1257,626,648]" italics="true" pageId="26" pageNumber="1160">M. equilamellae</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C394D4EFFE7FFF847A9756CFA6FFD3F" authorityName="Okuda" authorityYear="1937" box="[1279,1435,627,648]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="japonica">
|
||
<emphasis id="B94DEADFFFE7FFF847A9756CFA6FFD3F" box="[1279,1435,627,648]" italics="true" pageId="26" pageNumber="1160">M. japonica</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C394D4EFFE7FFF8406D758EFC17FD11" authorityName="Mortimer & Mackie" authorityYear="2006" box="[827,995,657,678]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="symmetrica">
|
||
<emphasis id="B94DEADFFFE7FFF8406D758EFC17FD11" box="[827,995,657,678]" italics="true" pageId="26" pageNumber="1160">M. symmetrica</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C394D4EFFE7FFF840A7758EFB68FD11" authorityName="Jones" authorityYear="1963" box="[1009,1180,657,678]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="polydentata">
|
||
<emphasis id="B94DEADFFFE7FFF840A7758EFB68FD11" box="[1009,1180,657,678]" italics="true" pageId="26" pageNumber="1160">M. polydentata</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C394D4EFFE7FFF84780758EFA56FD11" authorityName="Bolivar & Lana" authorityYear="1986" box="[1238,1442,657,678]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="variolamellata">
|
||
<emphasis id="B94DEADFFFE7FFF84780758EFA56FD11" box="[1238,1442,657,678]" italics="true" pageId="26" pageNumber="1160">M. variolamellata</emphasis>
|
||
</taxonomicName>
|
||
in possessing thoracic superior dorsal lobes (absent in the others). It further differs from
|
||
<taxonomicName id="4C394D4EFFE7FFF8478275D0FA77FD54" authorityName="Jones" authorityYear="1963" box="[1236,1411,718,740]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="polydentata">
|
||
<emphasis id="B94DEADFFFE7FFF8478275D0FA77FD54" box="[1236,1411,718,740]" italics="true" pageId="26" pageNumber="1160">M. polydentata</emphasis>
|
||
</taxonomicName>
|
||
in possessing tridentate hooded hooks in the abdomen rather than polydentate.
|
||
</paragraph>
|
||
<paragraph id="8B8636CDFFE7FFF840057435FAFEFBC4" blockId="26.[827,1444,197,1139]" pageId="26" pageNumber="1160">
|
||
Of all the previously described African species,
|
||
<taxonomicName id="4C394D4EFFE7FFF8406D7456FC4CFCE9" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[827,952,841,862]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="nanseni">
|
||
<emphasis id="B94DEADFFFE7FFF8406D7456FC4CFCE9" box="[827,952,841,862]" italics="true" pageId="26" pageNumber="1160">M. nanseni</emphasis>
|
||
</taxonomicName>
|
||
shares affinities with
|
||
<taxonomicName id="4C394D4EFFE7FFF847EC7456FACEFCE9" authorityName="Mortimer & Mackie" authorityYear="2006" box="[1210,1338,841,862]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="cepiceps">
|
||
<emphasis id="B94DEADFFFE7FFF847EC7456FACEFCE9" box="[1210,1338,841,862]" italics="true" pageId="26" pageNumber="1160">M. cepiceps</emphasis>
|
||
</taxonomicName>
|
||
from the
|
||
<collectingCountry id="F32E765DFFE7FFF8406D7478FC44FCCA" box="[827,944,871,893]" name="Seychelles" pageId="26" pageNumber="1160">Seychelles</collectingCountry>
|
||
, particularly in the nature of the prostomium, which is somewhat onion-shaped in the latter species. However, they differ in the lamellae of chaetiger 9; the latter species possessing thoracic superior dorsal lobes on all thoracic chaetigers (absent on chaetiger
|
||
<quantity id="4CC19B28FFE7FFF8462274FDFA56FC4F" box="[1396,1442,994,1016]" metricMagnitude="-1" metricUnit="m" metricValue="2.286" pageId="26" pageNumber="1160" unit="in" value="9.0">9 in</quantity>
|
||
<taxonomicName id="4C394D4EFFE7FFF8406D731EFC4CFBA1" authorityName="Mortimer & Kongsrud & Willassen" authorityYear="2022" box="[827,952,1025,1046]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" pageId="26" pageNumber="1160" phylum="Annelida" rank="species" species="nanseni">
|
||
<emphasis id="B94DEADFFFE7FFF8406D731EFC4CFBA1" box="[827,952,1025,1046]" italics="true" pageId="26" pageNumber="1160">M. nanseni</emphasis>
|
||
</taxonomicName>
|
||
) and low, rounded, postchaetal neuropodial lamellae, with small, ventral processes below the chaetal bundle (as opposed to slender, elongate triangular postchaetal lamellae for the new species).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |