143 lines
16 KiB
XML
143 lines
16 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.87.784" ID-GBIF-Dataset="4f1f7124-7644-4667-851e-cf2b42745004" ID-PMC="PMC3082997" ID-Pensoft-Pub="1313-2970-87-19" ID-PubMed="21594100" ModsDocAuthor="" ModsDocDate="2011" ModsDocID="1313-2970-87-19" ModsDocOrigin="ZooKeys 87" ModsDocTitle="Tanaidaceans (Crustacea) from the Central Pacific Manganese Nodule Province. I. The genera Collettea, Robustochelia and Tumidochelia" checkinTime="1451250745275" checkinUser="pensoft" docAuthor="Larsen, Kim" docDate="2011" docId="DED1274EA6429D760F43448E7E1CA768" docLanguage="en" docName="ZooKeys 87: 19-41" docOrigin="ZooKeys 87" docSource="http://dx.doi.org/10.3897/zookeys.87.784" docTitle="Robustochelia pacifica Larsen, 2011, sp. n." docType="treatment" docVersion="5" lastPageNumber="35" masterDocId="091B75074838FFA6FFCDFF81046AFFE1" masterDocTitle="Tanaidaceans (Crustacea) from the Central Pacific Manganese Nodule Province. I. The genera Collettea, Robustochelia and Tumidochelia" masterLastPageNumber="41" masterPageNumber="19" pageNumber="31" updateTime="1668167725948" updateUser="ExternalLinkService">
|
|
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
|
|
<mods:titleInfo>
|
|
<mods:title>Tanaidaceans (Crustacea) from the Central Pacific Manganese Nodule Province. I. The genera Collettea, Robustochelia and Tumidochelia</mods:title>
|
|
</mods:titleInfo>
|
|
<mods:name type="personal">
|
|
<mods:role>
|
|
<mods:roleTerm>Author</mods:roleTerm>
|
|
</mods:role>
|
|
<mods:namePart>Larsen, Kim</mods:namePart>
|
|
</mods:name>
|
|
<mods:typeOfResource>text</mods:typeOfResource>
|
|
<mods:relatedItem type="host">
|
|
<mods:titleInfo>
|
|
<mods:title>ZooKeys</mods:title>
|
|
</mods:titleInfo>
|
|
<mods:part>
|
|
<mods:date>2011</mods:date>
|
|
<mods:detail type="volume">
|
|
<mods:number>87</mods:number>
|
|
</mods:detail>
|
|
<mods:extent unit="page">
|
|
<mods:start>19</mods:start>
|
|
<mods:end>41</mods:end>
|
|
</mods:extent>
|
|
</mods:part>
|
|
</mods:relatedItem>
|
|
<mods:location>
|
|
<mods:url>http://dx.doi.org/10.3897/zookeys.87.784</mods:url>
|
|
</mods:location>
|
|
<mods:classification>journal article</mods:classification>
|
|
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.87.784</mods:identifier>
|
|
<mods:identifier type="Pensoft-Pub">1313-2970-87-19</mods:identifier>
|
|
</mods:mods>
|
|
<treatment ID-GBIF-Taxon="159361556" LSID="urn:lsid:zoobank.org:act:64828C04-B759-4400-A3DD-B35DC486A0D1" httpUri="http://treatment.plazi.org/id/DED1274EA6429D760F43448E7E1CA768" lastPageId="16" lastPageNumber="35" pageId="12" pageNumber="31">
|
|
<subSubSection pageId="12" pageNumber="31" type="nomenclature">
|
|
<paragraph pageId="12" pageNumber="31">
|
|
<taxonomicName LSID="urn:lsid:zoobank.org:act:64828C04-B759-4400-A3DD-B35DC486A0D1" class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia pacifica" order="Tanaidacea" pageId="12" pageNumber="31" phylum="Arthropoda" rank="species" species="pacifica">Robustochelia pacifica</taxonomicName>
|
|
<taxonomicNameLabel pageId="12" pageNumber="31">sp. n.</taxonomicNameLabel>
|
|
Figs 810
|
|
</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="12" pageNumber="31" type="material examined">
|
|
<paragraph pageId="12" pageNumber="31">Material examined.</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Holotype manca II (MNHN-Ta1030) SUB-CStation CAROT-0 # 18, 05/06-2004, 14°02.6665'N, 130°05.9948'W, 5045 m.</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="12" pageNumber="31" type="diagnosis">
|
|
<paragraph pageId="12" pageNumber="31">Diagnosis.</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Manca II. Carapace longer than the lengths of pereonites 1 and 2 combined. Pereonites 2-5 longer than wide. Pleotelson longer than combined length of three pleonites. Mandibular molar tapering. Maxillipedal endites with medial setae. Cheliped propodus and proximal part of fixed finger with calcified keel; fixed finger with clear tubercle distal from the keel; dactylus with dorsoproximal seta. Pereopods 1-3 propodus setae only reaching unguis insertion. Uropods as long as pleotelson.</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Male. Unknown.</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="12" pageNumber="31" type="etymology">
|
|
<paragraph pageId="12" pageNumber="31">Etymology.</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Named after the Pacific Ocean.</paragraph>
|
|
</subSubSection>
|
|
<subSubSection lastPageId="14" lastPageNumber="33" pageId="12" pageNumber="31" type="description">
|
|
<paragraph pageId="12" pageNumber="31">Description.</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Manca II (body and appendages of holotype).</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Body (Fig. 8A) length 1.7 mm. About ten times as long as wide (owing to the curved nature of the holotype, body morphometric calculations are based on the lateral view).</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Cephalothorax more than 1.5 times as long as wide. Shorter than the lengths of pereonites 1 and 2 combined. Eye-lobes absent.</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Pereon lateral margins almost straight. Pereonite 1 and 6 wider than long. Pereonites 2-5 longer than wide.</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Pleon short (including pleotelson about 0.25 times total body length).</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Pleotelson longer than the lengths of three free pleonites combined, apex blunt and covered by dorsal plate.</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Antennule (Fig. 9A) 0.67 times as long as carapace, with four plus one minute terminal articles. Article 1 shorter than rest of antennule, with three setulose setae medially. Article 2 longer than article 3, with two setulated and one simple distal setae. Article 3 shorter than article 4, with one simple distal seta. Article 4 longer than article 2, with two long and one short simple distal setae, with one very wide distal aesthetasc. Article 5 minute, with two aesthestascs and one seta.</paragraph>
|
|
<paragraph pageId="12" pageNumber="31">Antenna (Fig. 9B) with six articles. Almost as long as antennule. Article 1 wider than long, naked, not significantly wider than other articles. Article 2 longer than article 3, with one simple dorsal and ventral setae. Article 3 longer than article 5, with one simple dorsal seta. Article 4 longer than other articles, with three setulose and one simple distal setae. Article 5 as long as article 2, with two simple distal setae. Article 6 minute, with four distal setae.</paragraph>
|
|
<paragraph lastPageId="14" lastPageNumber="33" pageId="13" pageNumber="32">
|
|
<pageBreakToken pageId="13" pageNumber="32" start="start">Mouthparts</pageBreakToken>
|
|
: Labrum (Fig. 9C) finely setose, with flat apex. Mandibular molar tapering, ending in a few small spines. Left mandible (Fig. 9D) lacinia mobilis longer and broader than incisor; incisor blunt. Right mandible (Fig. 9E) incisor with medial depression. Labium (Fig. 9F) as wide as maxillipedal endites, outer corners with only a few setules. Maxillule (Fig. 9G) endite with 12 spiniform distal setae; palp with two
|
|
<pageBreakToken pageId="14" pageNumber="33" start="start">terminal</pageBreakToken>
|
|
setae. Maxilla (Fig. 9H) elongated and featureless. Maxilliped (Fig. 9I) endites without denticles but with two distal setae, the medial one longest; palp article 1 with one outer seta, article 2 with three inner setae, article 3 with three setae on inner margin, article 4 with five setae. Epignath not recovered.
|
|
</paragraph>
|
|
<paragraph pageId="14" pageNumber="33">Cheliped (Fig. 10A, B) basis shorter than carpus, naked. Merus prominent with one simple ventral seta. Carpus appears twisted in relation to propodus, shorter than propodus including fixed finger, with two simple ventral setae and prominent distal process. Propodus massive, with one seta at dactylus insertion and ventral calcified keel. Fixed finger with keel only on proximal part, but with a clear tubercle distally from the keel, with one ventral seta and two on inner margin, and with one large distal process. Dactylus as long as fixed finger, with small medial process and small dorsoproximal seta.</paragraph>
|
|
<paragraph pageId="14" pageNumber="33">Pereopod 1 (Fig. 10C) coxa with one simple seta. Basis longer than the three succeeding articles combined. Ischium with one ventral seta. Merus as long as carpus, widening distally, naked. Carpus shorter than 0.5 times propodus, with two spiniform and one simple distal setae. Propodus with spinnules and one distal seta on both margins and dorsal spine. Dactylus and unguis combined shorter than propodus, not fused, dactylus shorter than unguis.</paragraph>
|
|
<paragraph pageId="14" pageNumber="33">Pereopod 2 (Fig. 10D) as pereopod 1 except: coxa apparently without seta. Merus with ventral seta. Carpus with simple ventral seta.</paragraph>
|
|
<paragraph pageId="14" pageNumber="33">Pereopod 3 (Fig. 10E) as pereopod 1 except: basis with ventromedial setulose seta.</paragraph>
|
|
<paragraph pageId="14" pageNumber="33">Pereopod 4 (Fig. 10F) with no visible coxa. Basis about as long as the three succeeding articles combined, naked. Ischium naked. Merus with one simple ventral seta. Carpus with two small spiniform and one simple distal setae. Propodus longer than carpus, with two spiniform ventral and one simple dorsal setae. Dactylus and unguis combined shorter than propodus, not fused, with spinnules on both margins. Unguis still longer than dactylus, but shorter than in pereopod 1-3.</paragraph>
|
|
<paragraph pageId="14" pageNumber="33">Pereopod 5 (Fig. 10G) as pereopod 4 except merus with two spiniform setae and carpus with three.</paragraph>
|
|
<paragraph pageId="14" pageNumber="33">Pereopod 6 absent in manca II.</paragraph>
|
|
<paragraph pageId="14" pageNumber="33">Pleopods absent in manca II.</paragraph>
|
|
<paragraph pageId="14" pageNumber="33">Uropod (Fig. 8B) longer than pleotelson. Basal article naked and about as long exopod. Endopod with weak traces of a medial pseudo-articulation, with two medial setulose setae, one subdistal seta and four distal setae. Exopod less than half of endopod length, with two distal setae of unequal length.</paragraph>
|
|
<caption pageId="14" pageNumber="33">
|
|
<paragraph pageId="14" pageNumber="33">
|
|
Figure 8.
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia pacifica" order="Tanaidacea" pageId="14" pageNumber="33" phylum="Arthropoda" rank="species" species="pacifica">Robustochelia pacifica</taxonomicName>
|
|
sp. n. Holotype A lateral view B Pleotelson and uropods. Scale bars 0.5 mm.
|
|
</paragraph>
|
|
</caption>
|
|
<caption pageId="14" pageNumber="33">
|
|
<paragraph pageId="14" pageNumber="33">
|
|
Figure 9.
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia pacifica" order="Tanaidacea" pageId="14" pageNumber="33" phylum="Arthropoda" rank="species" species="pacifica">Robustochelia pacifica</taxonomicName>
|
|
sp. n. Holotype A antennule B antenna C labrum D left mandible E right mandible F labium G maxillule H maxilla I Maxilliped. Scale bar 0.1 mm.
|
|
</paragraph>
|
|
</caption>
|
|
<caption pageId="14" pageNumber="33">
|
|
<paragraph pageId="14" pageNumber="33">
|
|
Figure 10.
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia pacifica" order="Tanaidacea" pageId="14" pageNumber="33" phylum="Arthropoda" rank="species" species="pacifica">Robustochelia pacifica</taxonomicName>
|
|
sp. n. Holotype A left cheliped, inner view B right cheliped, outer view C pereopod 1 D pereopod 2 E pereopod 3 F Pereopod 4 G pereopod 5 H pereopod 6 I pleopod. Scale bar = 0.1 mm.
|
|
</paragraph>
|
|
</caption>
|
|
</subSubSection>
|
|
<subSubSection lastPageId="16" lastPageNumber="35" pageId="14" pageNumber="33" type="remarks">
|
|
<paragraph pageId="14" pageNumber="33">Remarks.</paragraph>
|
|
<paragraph lastPageId="15" lastPageNumber="34" pageId="14" pageNumber="33">
|
|
Bacause the studied specimen represent manca stageit is difficult to compare it with the other species of the genus. The carapace being longer than combined length of pereonites 1 and 2 and the weak armament of the pereopods (particularly the carpus) differentiate
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia pacifica" order="Tanaidacea" pageId="14" pageNumber="33" phylum="Arthropoda" rank="species" species="pacifica">Robustochelia pacifica</taxonomicName>
|
|
sp. n. from
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia longa" order="Tanaidacea" pageId="14" pageNumber="33" phylum="Arthropoda" rank="species" species="longa">Robustochelia longa</taxonomicName>
|
|
. As for
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia angusticephala" order="Tanaidacea" pageId="14" pageNumber="33" phylum="Arthropoda" rank="species" species="angusticephala">Robustochelia angusticephala</taxonomicName>
|
|
, this species is only incompletely described and nothing is known about the mouthparts so comparison with this species is difficult. However, the weaker fixed finger of
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia pacifica" order="Tanaidacea" pageId="14" pageNumber="33" phylum="Arthropoda" rank="species" species="pacifica">Robustochelia pacifica</taxonomicName>
|
|
and the shape of the cephalothorax indicates that these are not conspecific.
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia pacifica" order="Tanaidacea" pageId="14" pageNumber="33" phylum="Arthropoda" rank="species" species="pacifica">Robustochelia pacifica</taxonomicName>
|
|
most closely resemble
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia robusta" order="Tanaidacea" pageId="14" pageNumber="33" phylum="Arthropoda" rank="species" species="robusta">Robustochelia robusta</taxonomicName>
|
|
,
|
|
<pageBreakToken pageId="15" pageNumber="34" start="start">but</pageBreakToken>
|
|
differs in the stout antennule (particularly article 4) and antenna, but also the more rectangular shape of the cephalothorax, the pereonites 2-5 being longer than wide, the large tubercle distally on the fixed finger, and the much longer pleotelson.
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia pacifica" order="Tanaidacea" pageId="15" pageNumber="34" phylum="Arthropoda" rank="species" species="pacifica">Robustochelia pacifica</taxonomicName>
|
|
differs from
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia virilis" order="Tanaidacea" pageId="15" pageNumber="34" phylum="Arthropoda" rank="species" species="virilis">Robustochelia virilis</taxonomicName>
|
|
by the pereonite 4 and 5 being longer than wide and by the pereopods 1-3 propodus setae not reaching longer than unguis insertion.
|
|
</paragraph>
|
|
<paragraph pageId="16" pageNumber="35">
|
|
<pageBreakToken pageId="16" pageNumber="35" start="start">The</pageBreakToken>
|
|
species
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia solida" order="Tanaidacea" pageId="16" pageNumber="35" phylum="Arthropoda" rank="species" species="solida">Robustochelia solida</taxonomicName>
|
|
Larsen, 2005 was removed from the genus by
|
|
<bibRefCitation author="Jozwiak, P" journalOrPublisher="Zootaxa" pageId="16" pageNumber="35" pagination="19 - 35" title="New records of two rare genera, Monstrotanais Kudinova-Pasternak, 1981 and Robustochelia Kudinova-Pasternak, 1983 (Tanaidacea: Crustacea)." volume="1505" year="2007">
|
|
<normalizedToken originalValue="Józwiak">Jozwiak</normalizedToken>
|
|
and
|
|
<normalizedToken originalValue="Błażewicz-Paszkowycz">Blazewicz-Paszkowycz</normalizedToken>
|
|
2007
|
|
</bibRefCitation>
|
|
, based primary on the present of the present of a broad molar. This removal is undoubtly correct and thus clearly illustrate that the heavy cheliped is not a sufficient character for defining the genus
|
|
<taxonomicName class="Malacostraca" genus="Robustochelia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Robustochelia" order="Tanaidacea" pageId="16" pageNumber="35" phylum="Arthropoda" rank="genus">Robustochelia</taxonomicName>
|
|
.
|
|
</paragraph>
|
|
</subSubSection>
|
|
</treatment>
|
|
</document> |