406 lines
33 KiB
XML
406 lines
33 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.891.39564" ID-GBIF-Dataset="05810382-7e68-4a58-a97b-771e2dd2de42" ID-PMC="PMC6882927" ID-Pensoft-Pub="1313-2970-891-1" ID-Pensoft-UUID="F73BD7AE79B95BDB8E4D4D4AED0908EE" ID-PubMed="31802969" ID-ZooBank="82F35276BF6247A2BCF65045351EB6F3" ModsDocID="1313-2970-891-1" checkinTime="1574358811969" checkinUser="pensoft" docAuthor="Hadfield, Kerry A., Schizas, Nikolaos V., Chatterjee, Tapas & Smit, Nico J." docDate="2019" docId="67D5CD942B3E506BB35D7D69423287ED" docLanguage="en" docName="ZooKeys 891: 1-16" docOrigin="ZooKeys 891" docSource="http://dx.doi.org/10.3897/zookeys.891.39564" docTitle="Gnathia bermudensis Hadfield, Schizas, Chatterjee & Smit, 2019, sp. nov." docType="treatment" docVersion="4" id="F73BD7AE79B95BDB8E4D4D4AED0908EE" lastPageNumber="1" masterDocId="F73BD7AE79B95BDB8E4D4D4AED0908EE" masterDocTitle="Gnathia bermudensis (Crustacea, Isopoda, Gnathiidae), a new species from the mesophotic reefs of Bermuda, with a key to Gnathia from the Greater Caribbean biogeographic region" masterLastPageNumber="16" masterPageNumber="1" pageNumber="1" updateTime="1668168110066" updateUser="ExternalLinkService">
|
||
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
|
||
<mods:titleInfo>
|
||
<mods:title>Gnathia bermudensis (Crustacea, Isopoda, Gnathiidae), a new species from the mesophotic reefs of Bermuda, with a key to Gnathia from the Greater Caribbean biogeographic region</mods:title>
|
||
</mods:titleInfo>
|
||
<mods:name type="personal">
|
||
<mods:role>
|
||
<mods:roleTerm>Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart>Hadfield, Kerry A.</mods:namePart>
|
||
</mods:name>
|
||
<mods:name type="personal">
|
||
<mods:role>
|
||
<mods:roleTerm>Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart>Schizas, Nikolaos V.</mods:namePart>
|
||
</mods:name>
|
||
<mods:name type="personal">
|
||
<mods:role>
|
||
<mods:roleTerm>Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart>Chatterjee, Tapas</mods:namePart>
|
||
</mods:name>
|
||
<mods:name type="personal">
|
||
<mods:role>
|
||
<mods:roleTerm>Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart>Smit, Nico J.</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>2019</mods:date>
|
||
<mods:detail type="volume">
|
||
<mods:number>891</mods:number>
|
||
</mods:detail>
|
||
<mods:extent unit="page">
|
||
<mods:start>1</mods:start>
|
||
<mods:end>16</mods:end>
|
||
</mods:extent>
|
||
</mods:part>
|
||
</mods:relatedItem>
|
||
<mods:location>
|
||
<mods:url>http://dx.doi.org/10.3897/zookeys.891.39564</mods:url>
|
||
</mods:location>
|
||
<mods:classification>journal article</mods:classification>
|
||
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.891.39564</mods:identifier>
|
||
<mods:identifier type="Pensoft-Pub">1313-2970-891-1</mods:identifier>
|
||
<mods:identifier type="ZooBank">82F35276BF6247A2BCF65045351EB6F3</mods:identifier>
|
||
<mods:identifier type="Pensoft-UUID">F73BD7AE79B95BDB8E4D4D4AED0908EE</mods:identifier>
|
||
</mods:mods>
|
||
<treatment ID-GBIF-Taxon="160511198" LSID="urn:lsid:plazi:treatment:67D5CD942B3E506BB35D7D69423287ED" httpUri="http://treatment.plazi.org/id/67D5CD942B3E506BB35D7D69423287ED" lastPageNumber="1" pageId="0" pageNumber="1">
|
||
<subSubSection pageId="0" pageNumber="1" type="nomenclature">
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<taxonomicName LSID="67D5CD94-2B3E-506B-B35D-7D69423287ED" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">Gnathia bermudensis</taxonomicName>
|
||
<taxonomicNameLabel pageId="0" pageNumber="1">sp. nov.</taxonomicNameLabel>
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Gnathia bermudensis sp. nov. (BAMZ 2016 - 338 - 147), male holotype (2.2 mm TL) A dorsal view B dorsal view of cephalosome C dorsal view of pleotelson and uropods D dorsal view of mandible E antenna F antennula G pylopod H maxilliped. Scale bars: 100 μm." figureDoi="10.3897/zookeys.891.39564.figure2" httpUri="https://binary.pensoft.net/fig/357804" pageId="0" pageNumber="1" tableDoi="10.3897/zookeys.891.39564.figure2">Figures 2</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Gnathia bermudensis sp. nov. (BAMZ 2016 - 338 - 147), male holotype (2.2 mm TL) A pleopod 2 B-F pereopods 2 - 6, respectively. Scale bar: 100 μm." figureDoi="10.3897/zookeys.891.39564.figure3" httpUri="https://binary.pensoft.net/fig/357805" pageId="0" pageNumber="1" tableDoi="10.3897/zookeys.891.39564.figure3">3</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Gnathia bermudensis sp. nov. (BAMZ 2016 - 338 - 148), male paratype (1.8 mm TL) Scanning Electron Microscope (SEM) images. A dorsal view B frontal margin and mandibles C ventral view of cephalosome D maxilliped E dorsal view of pleotelson and uropods. Scale bars: 100 μm." figureDoi="10.3897/zookeys.891.39564.figure4" httpUri="https://binary.pensoft.net/fig/357806" pageId="0" pageNumber="1" tableDoi="10.3897/zookeys.891.39564.figure4">4</figureCitation>
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="1" type="materials_examined">
|
||
<paragraph pageId="0" pageNumber="1">Material examined.</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis bold="true" pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Holotype</emphasis>
|
||
.
|
||
</emphasis>
|
||
Bermuda • 1 ♂ (2.2 mm TL); Plantagenet Bank (
|
||
<geoCoordinate degrees="31" direction="north" minutes="56.55" orientation="latitude" precision="9" value="31.9425">31°56.55'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="65" direction="west" minutes="09.29" orientation="longitude" precision="9" value="-65.15483">65°09.29'W</geoCoordinate>
|
||
); 56 m; 12 Aug 2016; Diver 2, from sediment; Sample ID BEX 2016-449 (BAMZ 2016-338-147).
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis bold="true" pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Paratypes</emphasis>
|
||
.
|
||
</emphasis>
|
||
Bermuda • 3 ♂♂ (1.9-2.1 mm TL) (one dissected), 1 ♂ used for SEM (1.8 mm TL), 1 ♀ (1.6 mm TL); same info as holotype (BAMZ 2016-338-148).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="1" type="materials_examined">
|
||
<paragraph pageId="0" pageNumber="1">Other material.</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
Bermuda • 4 ♂♂ (1.8-1.9 mm TL) (one dissected); Spittal (
|
||
<geoCoordinate degrees="32" direction="north" minutes="19.119" orientation="latitude" precision="1" value="32.31865">32°19.119'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="64" direction="west" minutes="39.437" orientation="longitude" precision="1" value="-64.65728">64°39.437'W</geoCoordinate>
|
||
); 45 m; 3 Aug 2016; sediment from
|
||
<taxonomicName class="Anthozoa" family="Montastraeidae" genus="Montastraea" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Montastraea cavernosa" order="Scleractinia" pageId="0" pageNumber="1" phylum="Cnidaria" rank="species" species="cavernosa">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Montastraea cavernosa</emphasis>
|
||
</taxonomicName>
|
||
(Linnaeus, 1767) corals, Divers 39; Sample ID BEX 2016-227, Parent BEX2016-225 (sediment from several
|
||
<taxonomicName class="Anthozoa" family="Montastraeidae" genus="Montastraea" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Montastraea cavernosa" order="Scleractinia" pageId="0" pageNumber="1" phylum="Cnidaria" rank="species" species="cavernosa">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Montastraea cavernosa</emphasis>
|
||
</taxonomicName>
|
||
colonies) (BAMZ 2016-338-149) • 1 ♂ (2.0 mm TL); NNE (
|
||
<geoCoordinate degrees="32" direction="north" minutes="28.59" orientation="latitude" precision="9" value="32.4765">32°28.59'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="64" direction="west" minutes="34.46" orientation="longitude" precision="9" value="-64.57433">64°34.46'W</geoCoordinate>
|
||
); 90 m; 4 Aug 2016; Event Divers; Sample ID BEX 2016-250, Parent BEX2016-248 (BAMZ 2016-338-150) • 1 zuphea (Z1) (0.45 mm TL); NNE (
|
||
<geoCoordinate degrees="32" direction="north" minutes="28.59" orientation="latitude" precision="9" value="32.4765">32°28.59'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="64" direction="west" minutes="34.46" orientation="longitude" precision="9" value="-64.57433">64°34.46'W</geoCoordinate>
|
||
); 4 Aug 2016; algae substrate; Sample ID BEX 2016-251 • 1 ♂ used for SEM (1.7 mm TL); Spittal (
|
||
<geoCoordinate degrees="32" direction="north" minutes="19.119" orientation="latitude" precision="1" value="32.31865">32°19.119'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="64" direction="west" minutes="39.437" orientation="longitude" precision="1" value="-64.65728">64°39.437'W</geoCoordinate>
|
||
); from rhodolith collected between 82-152 m; 7 Aug 2016; Dive 22, Nomad 1 (a Triton Submersible); Sample ID BEX 2016-299, Parent BEX2016-0265 • 1 ♂ (2.0 mm TL), 1 ♀ (1.9 mm TL), 1 zuphea (0.8 mm TL); Tiger 4 (
|
||
<geoCoordinate degrees="32" direction="north" minutes="11.17" orientation="latitude" precision="9" value="32.186165">32°11.17'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="64" direction="west" minutes="58.36" orientation="longitude" precision="9" value="-64.972664">64°58.36'W</geoCoordinate>
|
||
); 7 Aug 2016; Divers 12, from sediment; Sample ID BEX 2016-304, Parent BEX2016-0282 (rhodolith with red encrusting sponge,> 40 m) (BAMZ 2016-338-151) • 2 ♂♂ (1.9-2.0 mm TL); Spittal (
|
||
<geoCoordinate degrees="32" direction="north" minutes="19.119" orientation="latitude" precision="1" value="32.31865">32°19.119'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="64" direction="west" minutes="39.437" orientation="longitude" precision="1" value="-64.65728">64°39.437'W</geoCoordinate>
|
||
); 77 m; 11 Aug 2016; wash from rhodolith; Sample ID BEX 2016-428 • 1 ♂ (2.0 mm TL), 1 praniza (P3) (2.3 mm TL), 1 zuphea (Z1) (0.5 mm TL); Spittal (
|
||
<geoCoordinate degrees="32" direction="north" minutes="19.119" orientation="latitude" precision="1" value="32.31865">32°19.119'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="64" direction="west" minutes="39.437" orientation="longitude" precision="1" value="-64.65728">64°39.437'W</geoCoordinate>
|
||
); 77 m; 11 Aug 2016; Diver 30; Sample ID BEX 2016-430 • 4 zuphea (Z1) (0.5 mm TL); Plantagenet Bank (
|
||
<geoCoordinate degrees="31" direction="north" minutes="56.55" orientation="latitude" precision="9" value="31.9425">31°56.55'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="65" direction="west" minutes="09.29" orientation="longitude" precision="9" value="-65.15483">65°09.29'W</geoCoordinate>
|
||
); 56 m; 12 Aug 2016; Divers 2; Sample ID BEX 2016-450 • 2 ♂♂ (1.7-1.9 mm TL) (one used for SEM); Plantagenet Bank (
|
||
<geoCoordinate degrees="31" direction="north" minutes="56.55" orientation="latitude" precision="9" value="31.9425">31°56.55'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="65" direction="west" minutes="09.29" orientation="longitude" precision="9" value="-65.15483">65°09.29'W</geoCoordinate>
|
||
); 56 m; 12 Aug 2016; Divers 6; Sample ID BEX 2016-451. All samples were collected by GUE technical divers except Sample ID BEX 2016-299, Parent BEX2016-0265, which was collected by a Triton Submersible.
|
||
</paragraph>
|
||
<caption doi="10.3897/zookeys.891.39564.figure2" httpUri="https://binary.pensoft.net/fig/357804" pageId="0" pageNumber="1" start="Figure 2" startId="F2">
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis bold="true" pageId="0" pageNumber="1">Figure 2.</emphasis>
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia bermudensis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. (BAMZ 2016-338-147), male holotype (2.2 mm TL)
|
||
<emphasis bold="true" pageId="0" pageNumber="1">A</emphasis>
|
||
dorsal view
|
||
<emphasis bold="true" pageId="0" pageNumber="1">B</emphasis>
|
||
dorsal view of cephalosome
|
||
<emphasis bold="true" pageId="0" pageNumber="1">C</emphasis>
|
||
dorsal view of pleotelson and uropods
|
||
<emphasis bold="true" pageId="0" pageNumber="1">D</emphasis>
|
||
dorsal view of mandible
|
||
<emphasis bold="true" pageId="0" pageNumber="1">E</emphasis>
|
||
antenna
|
||
<emphasis bold="true" pageId="0" pageNumber="1">F</emphasis>
|
||
antennula
|
||
<emphasis bold="true" pageId="0" pageNumber="1">G</emphasis>
|
||
pylopod
|
||
<emphasis bold="true" pageId="0" pageNumber="1">H</emphasis>
|
||
maxilliped. Scale bars: 100
|
||
<normalizedToken originalValue="μm">μm</normalizedToken>
|
||
.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="1" type="description">
|
||
<paragraph pageId="0" pageNumber="1">Description of male.</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Body</emphasis>
|
||
2.3 times as long as greatest width, widest at pereonite 3; dorsal surfaces sparsely punctate, sparsely setose.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Cephalosome</emphasis>
|
||
quadrate, 0.7 as long as wide, lateral margins sub-parallel; dorsal surface with sparse granules; dorsal sulcus narrow, shallow, short; translucent region absent; paraocular ornamentation strongly developed, posteromedian tubercle present.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Frontolateral</emphasis>
|
||
present.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Frontal margin</emphasis>
|
||
slightly produced.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">External scissura</emphasis>
|
||
present, wide, shallow.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">process</emphasis>
|
||
present, weak, bifid, without fine setae.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Supraocular lobe</emphasis>
|
||
pronounced, pointed; accessory supraocular lobe not pronounced.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Superior frontolateral process</emphasis>
|
||
present, single, strong, conical, with two long simple setae.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Inferior frontolateral process</emphasis>
|
||
absent.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Mesioventral margin</emphasis>
|
||
concave.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Eyes</emphasis>
|
||
present, elongate, 0.3 times as long as cephalosome length, bulbous, standing out from head surface, ommatidia arranged in rows, eye colour black.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pereon</emphasis>
|
||
lateral margins subparallel, with few setae; anteriorly with sparse fine granules.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pereonite 1</emphasis>
|
||
not fused dorsally with cephalosome; dorsolateral margins fully obscured by cephalosome.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pereonite 2</emphasis>
|
||
wider than pereonite 1.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Areae laterales</emphasis>
|
||
present on pereonite 5.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pereonite 6</emphasis>
|
||
without lobi laterales; lobuii weak, globular.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pleon</emphasis>
|
||
covered in pectinate scales, epimera not dorsally visible on all pleonites.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pleonite 1</emphasis>
|
||
lateral margins with one pair of simple setae, with one pair of simple setae medially.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pleotelson</emphasis>
|
||
as long as anterior width, covered in pectinate scales. Pleotelson lateral margins finely serrate, anterolateral margins weakly convex, with two submarginal setae; posterolateral margin distally weakly concave, with two submarginal setae; apex with two setae.
|
||
</paragraph>
|
||
<caption doi="10.3897/zookeys.891.39564.figure3" httpUri="https://binary.pensoft.net/fig/357805" pageId="0" pageNumber="1" start="Figure 3" startId="F3">
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis bold="true" pageId="0" pageNumber="1">Figure 3.</emphasis>
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia bermudensis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. (BAMZ 2016-338-147), male holotype (2.2 mm TL)
|
||
<emphasis bold="true" pageId="0" pageNumber="1">A</emphasis>
|
||
pleopod 2
|
||
<emphasis bold="true" pageId="0" pageNumber="1">
|
||
<normalizedToken originalValue="B–F">B-F</normalizedToken>
|
||
</emphasis>
|
||
pereopods 2-6, respectively. Scale bar: 100
|
||
<normalizedToken originalValue="μm">μm</normalizedToken>
|
||
.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Antennula</emphasis>
|
||
peduncle article 2 0.8 times as long as article 1; article 3 1.9 times as long as article 2, 2.7 times as long as wide; flagellum 1.1 times as long as article 3, with five articles; article 3 with one aesthetasc seta and one simple seta; article 4 with one aesthetasc seta and one simple seta; article 5 terminating with one aesthetasc seta and three simple setae.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Antenna</emphasis>
|
||
peduncle article 4 2.5 times as long as wide, twice as long as article 3, and four simple setae; article 5 1.3 times as long as article 4, 2.8 times as long as wide, inferior margin with three penicillate setae, with six simple setae; flagellum 1.5 times as long as article 5, with seven articles.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Mandible</emphasis>
|
||
0.4 as long as width of cephalosome, triangular, weakly curved, evenly; apex 42% total length; mandibular seta present.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Incisor</emphasis>
|
||
dentate.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Blade</emphasis>
|
||
present, dentate, weakly convex, dentate along 100% of margin.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pseudoblade</emphasis>
|
||
absent; internal lobe absent; dorsal lobe absent; basal neck short; erisma present.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Maxilliped</emphasis>
|
||
5-articled; article 1 lateral margin with continuous marginal scale-setae; article 2 lateral margin with four plumose setae; article 3 lateral margin with six plumose setae; article 4 lateral margin with four plumose setae; article 5 with eight plumose setae; endite extending to mid-margin of article 3; without coupling setae.
|
||
</paragraph>
|
||
<caption doi="10.3897/zookeys.891.39564.figure4" httpUri="https://binary.pensoft.net/fig/357806" pageId="0" pageNumber="1" start="Figure 4" startId="F4">
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis bold="true" pageId="0" pageNumber="1">Figure 4.</emphasis>
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia bermudensis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. (BAMZ 2016-338-148), male paratype (1.8 mm TL) Scanning Electron Microscope (SEM) images.
|
||
<emphasis bold="true" pageId="0" pageNumber="1">A</emphasis>
|
||
dorsal view
|
||
<emphasis bold="true" pageId="0" pageNumber="1">B</emphasis>
|
||
frontal margin and mandibles
|
||
<emphasis bold="true" pageId="0" pageNumber="1">C</emphasis>
|
||
ventral view of cephalosome
|
||
<emphasis bold="true" pageId="0" pageNumber="1">D</emphasis>
|
||
maxilliped
|
||
<emphasis bold="true" pageId="0" pageNumber="1">E</emphasis>
|
||
dorsal view of pleotelson and uropods. Scale bars: 100
|
||
<normalizedToken originalValue="μm">μm</normalizedToken>
|
||
.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pylopod</emphasis>
|
||
first article 1.5 as long as wide, without distolateral lobe; posterior and lateral margins forming rounded curve; lateral margin with 23 large plumose setae; mesial margin with continuous scale-setae; distal margin with three simple setae; second article 1.1 as long as wide.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pereopods 2-6</emphasis>
|
||
with long simple setae and randomly covered in pectinate scales; pereopod 2 with tubercles on carpus and basis to ischium.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pereopod 2 basis</emphasis>
|
||
2.8 times as long as greatest width, superior margin with five setae, inferior margin with two setae; ischium 0.6 times as long as basis, 2.6 as long as wide, superior margin with one seta, inferior margin with three setae; merus 0.5 as long as ischium, 1.5 as long as wide, superior margin with two setae, inferior margin with four setae; carpus 0.6 as long as ischium, 1.9 as long as wide, superior margin without setae, inferior margin with two setae; propodus 0.8 times as long as ischium, 2.8 times as long as wide, superior and inferior margins without setae, and two robust setae; dactylus 0.7 as long as propodus.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pereopods 3 and 4</emphasis>
|
||
similar to pereopod 2.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pereopod 5</emphasis>
|
||
similar to pereopod 6.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pereopod 6</emphasis>
|
||
with tubercles on merus and carpus; basis 3.1 times as long as greatest width, superior margin with two setae, inferior margin with two setae; ischium 0.7 as long as basis, 2.7 as long as greatest width, superior margin with three setae, inferior margin with four setae; merus 0.6 as long as ischium, 2.1 times as long as wide, superior margin with three setae, inferior margin with two setae; carpus 0.6 as long as ischium, 1.7 times as long as wide, superior margin and inferior margin with one seta; propodus 0.9 as long as ischium, 3.8 times as long as wide, superior margin with three setae, inferior margin with one seta, and two robust setae; dactylus 0.6 as long as propodus.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Penes</emphasis>
|
||
opening flush with surface of sternite 7.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Pleopod 2 exopod</emphasis>
|
||
1.9 as long as wide, distally broadly rounded, with eight plumose setae; endopod 1.9 as long as wide, distally broadly rounded, with eight plumose setae; appendix masculina absent; peduncle 1.5 times as wide as long, mesial margin with two coupling setae, lateral margin with one simple seta.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Uropod</emphasis>
|
||
rami extending beyond pleotelson, apices narrowly rounded.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Uropod endopod</emphasis>
|
||
2.4 as long as greatest width, dorsally with five setae; lateral margin straight; proximomesial margin weakly convex, with seven long plumose setae.
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Uropod exopod</emphasis>
|
||
not extending to end of endopod, 2.9 times as long as greatest width; lateral margin straight, with two simple setae; proximomesial margin straight, distally convex, mesiodistal margin with seven long plumose setae.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="1" type="etymology">
|
||
<paragraph pageId="0" pageNumber="1">Etymology.</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
The epithet
|
||
<emphasis italics="true" pageId="0" pageNumber="1">bermudensis</emphasis>
|
||
is for the country Bermuda, being the first
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia</emphasis>
|
||
</taxonomicName>
|
||
record from this island nation.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="1" type="distribution">
|
||
<paragraph pageId="0" pageNumber="1">Distribution.</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">Bermuda.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="1" type="host">
|
||
<paragraph pageId="0" pageNumber="1">Hosts.</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">Not known.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="1" type="remarks">
|
||
<paragraph pageId="0" pageNumber="1">Remarks.</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia bermudensis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. may be identified by the produced frontal margin; presence of two superior frontolateral processes; a weak and bifid mediofrontal process; and pronounced and pointed supraocular lobes. The uropod rami extend past the posterior point of the pleotelson; pereonite 1 is not dorsally fused with the cephalosome; large eyes (0.3 as long as cephalosome length); and a weakly curved, dentate mandible.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
This species is from a moderate depth of 56-90 m and was collected from several habitat types (algae, loose gravel, rhodoliths, sediment associated with scleractinian corals, muddy sand, and sponges) encompassing the mesophotic reef ecosystems of Bermuda. The Mesophotic Coral Ecosystems (MCEs) of Bermuda represent the most northern coral reef systems of the Atlantic; they are visually dominated by scleractinian corals at the upper depth limits, which are replaced gradually at greater depths by rhodoliths, macroalgae beds and fossilised reefs (
|
||
<bibRefCitation DOI="https://doi.org/10.1007/978-3-319-92735-0" author="Goodbody-Gringley, G" editor="Loya, Y" journalOrPublisher="Journal of the North Carolina Academy of Science" pageId="0" pageNumber="1" refId="B11" refString="Goodbody-Gringley, G, Noyes, T, Smith, SR, Loya, Y, Puglise, KA, Bridge, TCL, 2019. Springer International Publishing.https://doi.org/10.1007/978-3-319-92735-0" title="Springer International Publishing" url="https://doi.org/10.1007/978-3-319-92735-0" year="2019">Goodbody-Gringley et al. 2019</bibRefCitation>
|
||
). The new gnathiid species has been found on the mesophotic slopes of the main seamount (i.e., the main island of Bermuda) and the smaller seamount Plantagenet (
|
||
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Map of collection sites around Bermuda. Data overlay GEBCO _ 2014 Grid which provides 30 arc-second global grid of elevations. Depth contours in meters." figureDoi="10.3897/zookeys.891.39564.figure1" httpUri="https://binary.pensoft.net/fig/357803" pageId="0" pageNumber="1" tableDoi="10.3897/zookeys.891.39564.figure1">Figure 1</figureCitation>
|
||
); therefore, it is expected to be found throughout the deeper reefs of Bermuda. Only four other species of
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia</emphasis>
|
||
</taxonomicName>
|
||
have been collected from greater depths in this region.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia bermudensis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. is most similar to
|
||
<taxonomicName lsidName="G. beethoveni" pageId="0" pageNumber="1" rank="species" species="beethoveni">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">G. beethoveni</emphasis>
|
||
</taxonomicName>
|
||
Paul & Menzies, 1971,
|
||
<taxonomicName lsidName="G. calsi" pageId="0" pageNumber="1" rank="species" species="calsi">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">G. calsi</emphasis>
|
||
</taxonomicName>
|
||
<normalizedToken originalValue="Müller">Mueller</normalizedToken>
|
||
, 1993,
|
||
<taxonomicName lsidName="G. johanna" pageId="0" pageNumber="1" rank="species" species="johanna">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">G. johanna</emphasis>
|
||
</taxonomicName>
|
||
Monod, 1926,
|
||
<taxonomicName lsidName="G. magdalenensis" pageId="0" pageNumber="1" rank="species" species="magdalenensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">G. magdalenensis</emphasis>
|
||
</taxonomicName>
|
||
<normalizedToken originalValue="Müller">Mueller</normalizedToken>
|
||
, 1988, and
|
||
<taxonomicName lsidName="G. virginalis" pageId="0" pageNumber="1" rank="species" species="virginalis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">G. virginalis</emphasis>
|
||
</taxonomicName>
|
||
Monod, 1926 from the region. The frontal margin of
|
||
<taxonomicName lsidName="G. beethoveni" pageId="0" pageNumber="1" rank="species" species="beethoveni">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">G. beethoveni</emphasis>
|
||
</taxonomicName>
|
||
differs from
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia bermudensis</emphasis>
|
||
</taxonomicName>
|
||
in having less pronounced supraocular lobes, four frontolateral processes, a shallow median notch, and the cephalosome is lacking dorsal tubercles.
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia calsi" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="calsi">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia calsi</emphasis>
|
||
</taxonomicName>
|
||
also has a deeply notched mediofrontal process with two lobes (and setae), and well developed but angular supraocular lobes, not seen in
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia bermudensis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov.
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia johanna" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="johanna">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia johanna</emphasis>
|
||
</taxonomicName>
|
||
is narrower than
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia bermudensis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov., with less pronounced supraocular lobes and a single convex mediofrontal process (with setae) between the superior frontolateral processes.
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia magdalenensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="magdalenensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia magdalenensis</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName lsidName="G. virginalis" pageId="0" pageNumber="1" rank="species" species="virginalis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">G. virginalis</emphasis>
|
||
</taxonomicName>
|
||
differ from
|
||
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia bermudensis" order="Isopoda" pageId="0" pageNumber="1" phylum="Arthropoda" rank="species" species="bermudensis">
|
||
<emphasis italics="true" pageId="0" pageNumber="1">Gnathia bermudensis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. in having slightly pointed supraocular lobes, a single pointed mediofrontal process with setae, and a longer cephalosome that is fused with pereonite 1.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="1">Although adult females and zuphea juveniles were collected with the males, they cannot be confidently linked to this species without molecular or ecological data. More collections and rearing of the gnathiid isopods would need to be made in the future for more information and validation of these different life stages, as well as to determine the hosts of the juvenile stages.</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |