treatments-xml/data/BB/BA/3B/BBBA3B8A057BE4D2AF07AD89B428AA75.xml

<document ID-DOI="http://dx.doi.org/10.3897/zookeys.787.26291" ID-GBIF-Dataset="01faaf0d-d609-49a9-b6dd-ac5a5cf99b15" ID-PMC="PMC6177526" ID-Pensoft-Pub="1313-2970-787-17" ID-PubMed="30310354" ID-ZBK="7A183690B2AE4F999E1716B7FFCEC579" ModsDocAuthor="" ModsDocDate="2018" ModsDocID="1313-2970-787-17" ModsDocOrigin="ZooKeys 787" ModsDocTitle="First records of Gnathia Leach, 1814 and Tachaea Schioedte &amp; Meinert, 1879 from South Korea, with descriptions of two new species (Isopoda, Cymothoida, Cymothooidea)" checkinTime="1538531522327" checkinUser="pensoft" docAuthor="Song, Ji-Hun &amp; Min, Gi-Sik" docDate="2018" docId="BBBA3B8A057BE4D2AF07AD89B428AA75" docLanguage="en" docName="ZooKeys 787: 17-35" docOrigin="ZooKeys 787" docSource="http://dx.doi.org/10.3897/zookeys.787.26291" docTitle="Gnathia koreana Song &amp; Min, 2018, sp. n." docType="treatment" docUuid="BF1A7F54-5E72-41B3-9573-54D967EF55BE" docUuidSource="ZooBank" docVersion="5" lastPageNumber="17" masterDocId="FFE6D5338E0F3574B730FF84FFBEFF84" masterDocTitle="First records of Gnathia Leach, 1814 and Tachaea Schioedte &amp; Meinert, 1879 from South Korea, with descriptions of two new species (Isopoda, Cymothoida, Cymothooidea)" masterLastPageNumber="35" masterPageNumber="17" pageNumber="17" updateTime="1668166248823" updateUser="ExternalLinkService">
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<mods:titleInfo>
<mods:title>First records of Gnathia Leach, 1814 and Tachaea Schioedte &amp; Meinert, 1879 from South Korea, with descriptions of two new species (Isopoda, Cymothoida, Cymothooidea)</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Song, Ji-Hun</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Min, Gi-Sik</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
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<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
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<mods:part>
<mods:date>2018</mods:date>
<mods:detail type="volume">
<mods:number>787</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>17</mods:start>
<mods:end>35</mods:end>
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<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.787.26291</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.787.26291</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-787-17</mods:identifier>
<mods:identifier type="ZBK">7A183690B2AE4F999E1716B7FFCEC579</mods:identifier>
<mods:identifier type="ZooBank">7A183690B2AE4F999E1716B7FFCEC579</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="148431275" LSID="urn:lsid:zoobank.org:act:BF1A7F54-5E72-41B3-9573-54D967EF55BE" httpUri="http://treatment.plazi.org/id/BBBA3B8A057BE4D2AF07AD89B428AA75" lastPageNumber="17" pageId="0" pageNumber="17">
<subSubSection pageId="0" pageNumber="17" type="nomenclature">
<paragraph pageId="0" pageNumber="17">
<taxonomicName LSID="http://zoobank.org/BF1A7F54-5E72-41B3-9573-54D967EF55BE" class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia koreana" order="Isopoda" pageId="0" pageNumber="17" phylum="Arthropoda" rank="species" species="koreana">Gnathia koreana</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="17">sp. n.</taxonomicNameLabel>
Figures 1, 2, 3, 4
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="17" type="materials_examined">
<paragraph pageId="0" pageNumber="17">Material examined.</paragraph>
<paragraph pageId="0" pageNumber="17">
Holotype: adult male (4.6 mm, NIBRIV0000554213); Yeogaekseon terminal, Geomundo Island, Yeosu-si, Jeollanam-do, South Korea; 
<geoCoordinate direction="north" orientation="latitude" precision="15" value="34.026943">34°01'37&quot;N</geoCoordinate>
, 
<geoCoordinate direction="east" orientation="longitude" precision="15" value="127.3075">127°18'27&quot;E</geoCoordinate>
; 31 May 2014; approximately 10 m; coll. J.-H. Song. Paratype: adult male (4.3 mm, NIBRIV0000554214), same sample as holotype.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="17" type="etymology">
<paragraph pageId="0" pageNumber="17">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="17">
The specific name 
<normalizedToken originalValue="‘koreana’">'koreana'</normalizedToken>
is derived from the name of the nation from which the specimens were collected.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="17" type="diagnosis">
<paragraph pageId="0" pageNumber="17">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="17">Pereon dorsal surface smooth, sparsely setose, without tubercles. Cephalon dorsal surface sparsely setose with several granules medially. Paraocular ornamentation strongly developed, forming a ridge, without tubercles. Mediofrontal process strong and bifid. Superior frontolateral process shorter than mediofrontal process, rounded, and serrated. Mandible without pseudoblade and internal lobe.</paragraph>
<caption pageId="0" pageNumber="17">
<paragraph pageId="0" pageNumber="17">
Figure 1. 
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia koreana" order="Isopoda" pageId="0" pageNumber="17" phylum="Arthropoda" rank="species" species="koreana">Gnathia koreana</taxonomicName>
sp. n., male holotype A body, dorsal view B body, dorsal view C cephalon D mandible E paraocular ornamentation, dorsal view F paraocular ornamentation, lateral view. Scale bars: 1 mm (A, B), 0.5 mm (C, F), 0.4 mm (D), 0.1 mm (E).
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="17" type="description">
<paragraph pageId="0" pageNumber="17">Description</paragraph>
<paragraph pageId="0" pageNumber="17">(adult male, holotype).Body (Figures 1A, B, 2A) 3.2 times as long as greatest width; dorsal surfaces smooth, sparsely setose. Cephalon (Figure 1C) rectangular, 0.7 times as long as wide, lateral margins slightly convex and smooth; dorsal surface sparsely setose with several granules medially; dorsal sulcus wide, deep; paraocular ornamentation (Figure 1E, F) strongly developed, forming ridge, without tubercles; posteromedian tubercle present. Eyes (Figure 2A) 0.3 times as long as cephalon. Supraocular lobe (Figure 2A) weak, with blunt apex; accessory supraocular lobe not pronounced. Mediofrontal process (Figure 2B) elongated, bifid. Superior frontolateral process (Figure 2B) shorter than mediofrontal process, serrated. Inferior frontolateral process absent. Pereonites 1-7 (Figure 2A) without tubercles on dorsal surface, lateral margins smooth; pereonite 1 not fused dorsally with cephalon, dorsolateral margins fully obscured by cephalon; pereonite 2 wider than pereonite 1; pereonite 4 with anterior constriction; areae laterales present on pereonite 5; pereonite 6 with lobi laterales; pereonite 7 narrow, overlapping pleon; lobuii weak, globular. Pleonites 1-5 (Figure 2A), epimera not visible dorsally. Pleotelson (Figure 4F) 0.9 times as long as anterior width, lateral margins smooth, anterolateral margins not concave, posterolateral margins weakly concave; mid-dorsal surface with two sub-median setae, posterolateral margins with two submarginal setae, apex with two setae.</paragraph>
<paragraph pageId="0" pageNumber="17">Antennula (Figure 2C) peduncle article 2 0.6 times as long as article 1; article 3 1.7 times as long as article 2; flagellum with five articles. Antenna (Figure 2D) peduncle article 4 3.0 times as long as wide, 1.2 times as long as article 3, with two penicillate setae; flagellum with seven articles.</paragraph>
<caption pageId="0" pageNumber="17">
<paragraph pageId="0" pageNumber="17">
Figure 2. 
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia koreana" order="Isopoda" pageId="0" pageNumber="17" phylum="Arthropoda" rank="species" species="koreana">Gnathia koreana</taxonomicName>
sp. n., male holotype A body, dorsal view B mediofrontal process and superior frontolateral process C antennula D antenna E mandible F maxilliped G pylopod. Scale bars: 1 mm (A), 0.5 mm (B), 0.1 mm (
<normalizedToken originalValue="C–E">C-E</normalizedToken>
), 0.2 mm (F, G).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="17">Mandible (Figures 1C, D, 2E) 0.5 times as long as width of cephalon, curved upward; mandibular seta present; carina present, unornamented; incisor elevated, distally rounded; dentate blade with five weak processes; pseudoblade absent; internal lobe absent; dorsal lobe absent; basal neck short; erisma absent; lamina dentate absent. Maxilliped (Figure 2F) article 1 lateral margin with continuous marginal setae; article 2 lateral margin with three plumose setae; article 3 lateral margin with seven plumose setae; article 4 lateral margin with four plumose setae; article 5 with seven plumose setae; endite extending to distal margin of article 2; without coupling setae. Pylopod (Figure 2G) with three articles; article 1 1.4 times as long as wide, without distolateral lobe, with three areolae; posterior and lateral margins forming rounded curve; lateral margin with 30 plumose setae; mesial margin with continuous setae, distal margin with 5-6 setae; article 2 1.3 times as long as wide; article 3 minute.</paragraph>
<paragraph pageId="0" pageNumber="17">
Pereopods 2-6 (Figure 3 
<normalizedToken originalValue="A–E">A-E</normalizedToken>
) without long plumose setae; basis superior margin with 2-3 penicillate setae; dactylus superodistal margin with one penicillate seta. Pereopod 2 basis 2.4 times as long as greatest width, superior margin with two setae, inferior margin with three setae; ischium 0.7 times as long as basis, 2.4 times as long as wide, superior margin with three setae, inferior margin with four setae and four tubercles; merus 0.6 times as long as ischium, 1.8 times as long as wide, superodistal margin with one seta, inferior margin with one seta and four tubercles; carpus as long as merus, 2.1 times as long as wide, superodistal margin with one seta, inferior margin with three setae and three tubercles; propodus 0.8 times as long as ischium, 3.5 times as long as wide, superior margin with three setae, inferior margin with two robust setae; dactylus 0.3 times as long as propodus. Pereopods 3-6 similar, but basis superior margin with 3-6 tubercles.
</paragraph>
<caption pageId="0" pageNumber="17">
<paragraph pageId="0" pageNumber="17">
Figure 3. 
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia koreana" order="Isopoda" pageId="0" pageNumber="17" phylum="Arthropoda" rank="species" species="koreana">Gnathia koreana</taxonomicName>
sp. n., male holotype. A pereopod 2 B pereopod 3 C pereopod 4 D pereopod 5 E pereopod 6. Scale bars: 0.2 mm (
<normalizedToken originalValue="A–E">A-E</normalizedToken>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="17">
Pleopods 1-5 (Figure 4 
<normalizedToken originalValue="A–E">A-E</normalizedToken>
) similar. Pleopod 2 exopod 2.3 times as long as wide, with 8 plumose setae; endopod 2.5 times as long as wide, with seven plumose setae; appendix masculina with parallel margins, 0.6 times as long as endopod, distally rounded. Uropod (Figure 4F) rami extending beyond pleotelson, apices rounded; peduncle with two setae; endopod 2.6 times as long as greatest width, lateral margin with three setae, mesial margin with eight plumose setae, dorsally with one penicillate seta; exopod not extending to end of endopod, 4.0 times as long as greatest width, lateral margin with three setae; mesiodistal margin with three plumose setae.
</paragraph>
<caption pageId="0" pageNumber="17">
<paragraph pageId="0" pageNumber="17">
Figure 4. 
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia koreana" order="Isopoda" pageId="0" pageNumber="17" phylum="Arthropoda" rank="species" species="koreana">Gnathia koreana</taxonomicName>
sp. n., male holotype A pleopod 1 B pleopod 2 C pleopod 3 D pleopod 4 E pleopod 5 F pleotelson and uropod. Scale bars: 0.2 mm (
<normalizedToken originalValue="A–E">A-E</normalizedToken>
), 0.1 mm (F).
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="17" type="habitat">
<paragraph pageId="0" pageNumber="17">Habitat.</paragraph>
<paragraph pageId="0" pageNumber="17">This species was collected at approximately 10 m depth corresponding to a sedimentary bottom of muddy sand.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="17" type="remarks">
<paragraph pageId="0" pageNumber="17">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="17">
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia koreana" order="Isopoda" pageId="0" pageNumber="17" phylum="Arthropoda" rank="species" species="koreana">Gnathia koreana</taxonomicName>
sp. n. is distinguished from other known species of 
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia" order="Isopoda" pageId="0" pageNumber="17" phylum="Arthropoda" rank="genus">Gnathia</taxonomicName>
by the following characters: 1) the dorsal surface of the pereon without tubercles, 2) the paraocular ornamentation is strongly developed, forming a ridge, without tubercles, 3) the mediofrontal process is strong and bifid, 4) the superior frontolateral process is shorter than the mediofrontal process, rounded, and serrated, and 5) the mandible without internal lobe.
</paragraph>
<paragraph pageId="0" pageNumber="17">
<taxonomicName class="Malacostraca" family="Gnathiidae" genus="Gnathia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Gnathia koreana" order="Isopoda" pageId="0" pageNumber="17" phylum="Arthropoda" rank="species" species="koreana">Gnathia koreana</taxonomicName>
sp. n. is most similar to 
<taxonomicName lsidName="G. excavata" pageId="0" pageNumber="17" rank="species" species="excavata">G. excavata</taxonomicName>
from Japan in terms of the following characters: the body is smooth, the mediofrontal process is bifid, and the mandible without internal lobe. However, the new species is distinguished from 
<taxonomicName lsidName="G. excavata" pageId="0" pageNumber="17" rank="species" species="excavata">G. excavata</taxonomicName>
by the shape of the paraocular ornamentation and superior frontolateral process. In 
<taxonomicName lsidName="G. excavata" pageId="0" pageNumber="17" rank="species" species="excavata">G. excavata</taxonomicName>
, the paraocular ornamentation with three indistinct tubercles and the superior frontolateral process is acute and not serrated. In comparison, in the new species, the paraocular ornamentation with distinct unornamented ridge and the superior frontolateral process is rounded and serrated.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="17" type="distribution">
<paragraph pageId="0" pageNumber="17">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="17">Only known from the type locality.</paragraph>
</subSubSection>
</treatment>
</document>