388 lines
44 KiB
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388 lines
44 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zse.97.68486" ID-GBIF-Dataset="f13239d9-9ec9-41e2-97d2-ac13d641e195" ID-GBIF-Taxon="183412844" ID-Pensoft-Pub="1860-0743-2-345" ID-Pensoft-UUID="EEA88EFB84785CEDB08BEE84A80FE803" ID-ZooBank="C21D141B0CDF427F8EE31FCABAD668C6" LSID="urn:lsid:zoobank.org:act:BA9ADF20-A7DB-4C50-B301-D3036F77925B" ModsDocID="1860-0743-97-2-345" checkinTime="1625936809918" checkinUser="pensoft" docAuthor="Nurshazwan, Ja'afar, Sawamoto, Shozo & Rahim, Azman bin Abdul" docDate="2021" docId="F9B0469D27EF57318843942EAC6D4702" docLanguage="en" docName="ZoosystEvol 97(2): 345-354" docOrigin="Zoosystematics and Evolution 97 (2)" docPubDate="2021-07-09" docSource="http://dx.doi.org/10.3897/zse.97.68486" docTitle="Idiomysis bumbumiensis Nurshazwan & Sawamoto & Rahim 2021, sp. nov." docType="treatment" docUuid="BA9ADF20-A7DB-4C50-B301-D3036F77925B" docUuidSource="ZooBank" docVersion="3" id="EEA88EFB84785CEDB08BEE84A80FE803" lastPageNumber="345" masterDocId="EEA88EFB84785CEDB08BEE84A80FE803" masterDocTitle="Idiomysis bumbumiensis sp. nov., a new mysid species (Mysida, Mysidae, Anisomysini) from Southeast Asia" masterLastPageNumber="354" masterPageNumber="345" pageId="0" pageNumber="345" updateTime="1643434819958" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Idiomysis bumbumiensis sp. nov., a new mysid species (Mysida, Mysidae, Anisomysini) from Southeast Asia</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Nurshazwan, Ja'afar</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-4177-8727</mods:nameIdentifier>
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<mods:affiliation>Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Sawamoto, Shozo</mods:namePart>
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<mods:affiliation>20 - 21 Tsukimi-cho, Shimizu, Shizuoka 424 - 0853 Japan</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Rahim, Azman bin Abdul</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-8964-6638</mods:nameIdentifier>
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<mods:affiliation>Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia & Marine Ecosystem Research Centre (EKOMAR), Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia</mods:affiliation>
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<mods:nameIdentifier type="email">abarahim@gmail.com</mods:nameIdentifier>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>Zoosystematics and Evolution</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2021</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2021-07-09</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>97</mods:number>
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</mods:detail>
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<mods:detail type="issue">
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<mods:number>2</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>345</mods:start>
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<mods:end>354</mods:end>
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</mods:extent>
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</mods:part>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zse.97.68486</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zse.97.68486</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1860-0743-2-345</mods:identifier>
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<mods:identifier type="ZooBank">C21D141B0CDF427F8EE31FCABAD668C6</mods:identifier>
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<mods:identifier type="Pensoft-UUID">EEA88EFB84785CEDB08BEE84A80FE803</mods:identifier>
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<treatment ID-GBIF-Taxon="183412844" LSID="urn:lsid:zoobank.org:act:BA9ADF20-A7DB-4C50-B301-D3036F77925B" httpUri="http://treatment.plazi.org/id/F9B0469D27EF57318843942EAC6D4702" lastPageNumber="345" pageId="0" pageNumber="345">
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<subSubSection pageId="0" pageNumber="345" type="nomenclature">
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<paragraph pageId="0" pageNumber="345">
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<taxonomicName LSID="http://zoobank.org/BA9ADF20-A7DB-4C50-B301-D3036F77925B" authority="Nurshazwan & Sawamoto & Rahim, 2021" authorityName="Nurshazwan & Sawamoto & Rahim" authorityYear="2021" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis bumbumiensis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="species" species="bumbumiensis" status="sp. nov.">Idiomysis bumbumiensis</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="345">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="345" type="description">
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<paragraph pageId="0" pageNumber="345">
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Idiomysis bumbumiensis sp. nov. (freshly fixed), A. Lateral view of the holotype (BL. 2.3 mm, UKMMZ- 1611); B. Lateral view of allotype (BL. 3.2 mm, UKMMZ- 1612)." figureDoi="10.3897/zse..68486.figure2" httpUri="https://binary.pensoft.net/fig/564611" pageId="0" pageNumber="345">Figs 2</figureCitation>
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">, 3</figureCitation>
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<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. First thoracopod; B. Second thoracopod; C. Third thoracic endopod; D. Third thoracic exopod; E. Fourth thoracic endopod; F. Fifth thoracic endopod; G. Eighth thoracopod. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure4" httpUri="https://binary.pensoft.net/fig/564613" pageId="0" pageNumber="345">, 4</figureCitation>
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<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Pleopod 1; B. Pleopod 2; C. Pleopod 3; D. Pleopod 4; E. Pleopod 5; F. Uropod; G. Telson. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure5" httpUri="https://binary.pensoft.net/fig/564614" pageId="0" pageNumber="345">, 5</figureCitation>
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<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Idiomysis bumbumiensis sp. nov., allotype (BL. 3.2 mm, UKMMZ- 1612). A. Habitus; B. Antennule, oblique dorso-lateral view; C. Antennal; D. Pleopod 4; E. Telson. Scale bars equal 0.1 mm for B-E; 1 mm for A." figureDoi="10.3897/zse..68486.figure6" httpUri="https://binary.pensoft.net/fig/564615" pageId="0" pageNumber="345">, 6</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="345" type="type material">
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<paragraph pageId="0" pageNumber="345">Type material.</paragraph>
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<paragraph pageId="0" pageNumber="345">
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Holotype, adult male (BL. 2.3 mm, UKMMZ-1611); Allotype, ovigerous female (BL. 3.2 mm, UKMMZ-1612); Paratypes, two males (BL. 2.0 and 2.2 mm), one female (BL. 2.2 mm) (UKMMZ-1613); two females (BL. 2.6 and 3.1 mm, UKMMZ-1614), ND Divers House reef, Pulau Bum Bum, Semporna, Sabah, Malaysia,
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<geoCoordinate degrees="4" direction="north" minutes="26" orientation="latitude" precision="1" seconds="43.2" value="4.4453335">4°26'43.2"N</geoCoordinate>
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,
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<geoCoordinate degrees="118" direction="east" minutes="39" orientation="longitude" precision="1" seconds="08.1" value="118.65225">118°39'08.1"E</geoCoordinate>
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, SCUBA diving, 29 November 2018, 10.5 m depth, collectors: Abu-Bakar A.Z., Azman B.A.R. and Dendy A.O.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="345" type="diagnosis">
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<paragraph pageId="0" pageNumber="345">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="345">Antennal scale 2-segmented, with short apical segment, scale without any spine; rostrum subtriangular with broad rounded apex; thoracic exopod 1-8 with 7-9 segments; thoracic endopod 1-2 robust, thoracic endopod 3-8 elongate; all pleopods longer than wide; fourth male pleopod with distinct exopod and endopod not separated by sutures at the base, exopod terminally with 1 large barbed seta (armed with a few setules); endopod of uropod shorter than exopod; telson with a pair of minute spines on terminal margin; telson length ratio to sixth abdominal somite is 0.8.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="345" type="description">
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<paragraph pageId="0" pageNumber="345">Description for male. Head and cephalic appendage.</paragraph>
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<paragraph pageId="0" pageNumber="345">
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A pale-white and brownish body part (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Idiomysis bumbumiensis sp. nov. (freshly fixed), A. Lateral view of the holotype (BL. 2.3 mm, UKMMZ- 1611); B. Lateral view of allotype (BL. 3.2 mm, UKMMZ- 1612)." figureDoi="10.3897/zse..68486.figure2" httpUri="https://binary.pensoft.net/fig/564611" pageId="0" pageNumber="345">2A, B</figureCitation>
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). Orange to the yellowish-red cornea (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Idiomysis bumbumiensis sp. nov. (freshly fixed), A. Lateral view of the holotype (BL. 2.3 mm, UKMMZ- 1611); B. Lateral view of allotype (BL. 3.2 mm, UKMMZ- 1612)." figureDoi="10.3897/zse..68486.figure2" httpUri="https://binary.pensoft.net/fig/564611" pageId="0" pageNumber="345">2A, B</figureCitation>
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). Stout and bulky body (Figs
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Idiomysis bumbumiensis sp. nov. (freshly fixed), A. Lateral view of the holotype (BL. 2.3 mm, UKMMZ- 1611); B. Lateral view of allotype (BL. 3.2 mm, UKMMZ- 1612)." figureDoi="10.3897/zse..68486.figure2" httpUri="https://binary.pensoft.net/fig/564611" pageId="0" pageNumber="345">2A</figureCitation>
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,
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3A</figureCitation>
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) due to slightly double-flexed pleon antero-dorsally; short carapace, exposed last three thoracic somites, upwards-pointed trapezoid-shaped wing-like extension (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3A</figureCitation>
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); subtriangular shaped rostrum (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3B</figureCitation>
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) with broad rounded apex (subtriangular and bluntly pointed) extending between eyes reaching a middle basal segment of antennule peduncle; very large eyes (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3B</figureCitation>
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), globular; the cornea is wider than eyestalk, covering almost all of the eye surface.
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</paragraph>
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<caption doi="10.3897/zse..68486.figure2" httpUri="https://binary.pensoft.net/fig/564611" pageId="0" pageNumber="345" start="Figure 2" startId="F2">
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<paragraph pageId="0" pageNumber="345">
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<emphasis bold="true" pageId="0" pageNumber="345">Figure 2.</emphasis>
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<taxonomicName authorityName="Nurshazwan & Sawamoto & Rahim" authorityYear="2021" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis bumbumiensis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="species" species="bumbumiensis">
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<emphasis italics="true" pageId="0" pageNumber="345">Idiomysis bumbumiensis</emphasis>
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</taxonomicName>
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sp. nov. (freshly fixed),
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<emphasis bold="true" pageId="0" pageNumber="345">A.</emphasis>
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Lateral view of the holotype (BL. 2.3 mm, UKMMZ-1611);
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<emphasis bold="true" pageId="0" pageNumber="345">B.</emphasis>
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Lateral view of allotype (BL. 3.2 mm, UKMMZ-1612).
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</paragraph>
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</caption>
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<paragraph pageId="0" pageNumber="345">
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Antennule peduncle (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3D</figureCitation>
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) with three segments; the basal segment is the longest with a ventral short lobe on subterminal position with three setae; the median segment is the shortest with a ventral short lobe on subterminal position with three setae; the terminal segment is almost 0.5 times as long as the first/basal segment, with eight setae and one plumose seta, hirsute appendix masculina present; inner flagellum with four segments; outer flagellum with 9-10 segments; aesthetascs present. Antennal peduncle (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3E</figureCitation>
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) is very short and stout, with three segments; antennal scale is extending beyond antennule peduncle, long, robust and broad; suture present at 11-14% from apex; terminal segment with five plumose setae; proximal outer margin without plumose setae from the base of antennal scale is 64%, while proximal inner margin without plumose setae is 27%.
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</paragraph>
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<caption doi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345" start="Figure 3" startId="F3">
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<paragraph pageId="0" pageNumber="345">
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<emphasis bold="true" pageId="0" pageNumber="345">Figure 3.</emphasis>
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<taxonomicName authorityName="Nurshazwan & Sawamoto & Rahim" authorityYear="2021" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis bumbumiensis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="species" species="bumbumiensis">
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<emphasis italics="true" pageId="0" pageNumber="345">Idiomysis bumbumiensis</emphasis>
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</taxonomicName>
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sp. nov., holotype (BL. 2.3 mm, UKMMZ-1611).
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<emphasis bold="true" pageId="0" pageNumber="345">A.</emphasis>
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Habitus;
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<emphasis bold="true" pageId="0" pageNumber="345">B.</emphasis>
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Anterior body, dorsal view;
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<emphasis bold="true" pageId="0" pageNumber="345">C.</emphasis>
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Posterior body, dorsal view;
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<emphasis bold="true" pageId="0" pageNumber="345">D.</emphasis>
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Antennule, obliques dorso-lateral view;
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<emphasis bold="true" pageId="0" pageNumber="345">E.</emphasis>
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Antennal;
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<emphasis bold="true" pageId="0" pageNumber="345">F.</emphasis>
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Mandible;
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<emphasis bold="true" pageId="0" pageNumber="345">G.</emphasis>
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Maxilla;
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<emphasis bold="true" pageId="0" pageNumber="345">H.</emphasis>
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Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H.
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</paragraph>
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</caption>
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<paragraph pageId="0" pageNumber="345">
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Mandible (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3F</figureCitation>
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) with incisor and molar process; well-developed lacinia mobilis; the molar process is present; palp with three segments; small basal segment without setae; median segment with eight setae along the outer (lateral) margin and three setae along inner (mesial) margin; terminal segment with six normal setae and four plumose setae. Normal maxilla (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3G</figureCitation>
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) for the genus; exopod bearing five apical setae; two-segmented endopod, the sub-ellipsoidal shaped terminal segment with seven setae including two normal setae. Normal maxillula (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3H</figureCitation>
|
|
); basal lobe with nine large spines; precoxal lobe with two long setae and two small setae.
|
|
</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="345" type="thoracopods">
|
|
<paragraph pageId="0" pageNumber="345">Thoracopods.</paragraph>
|
|
<paragraph pageId="0" pageNumber="345">
|
|
A round basal plate of thoracic exopod at both distal corners with 7-9 segments with the last 3-4 segments bearing 1-2 plumose setae; robust thoracopods 1-2, slender and elongated thoracopods 3-8; carpopropodus of thoracic endopod 1-8 with 2, 2, 2, 1-2, 3, 1-2, 1, 1 segments, but some segmental borders are not well distinct in thoracopods 3-8; smaller dactylus of thoracopods 3-8 than thoracopods 1-2; nail of thoracopods 3-8 is more slender compared to thoracopods 1-2. The first thoracopod epipod (Fig.
|
|
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. First thoracopod; B. Second thoracopod; C. Third thoracic endopod; D. Third thoracic exopod; E. Fourth thoracic endopod; F. Fifth thoracic endopod; G. Eighth thoracopod. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure4" httpUri="https://binary.pensoft.net/fig/564613" pageId="0" pageNumber="345">4A</figureCitation>
|
|
) is linguiform-subtriangular without seta; seven-segmented exopod, first four segments without seta, the fifth segment with one plumose seta, the sixth and seventh segments with two plumose setae; normal and robust endopod, densely setose along both lateral margins of the ischium to dactylus, each segment bearing 1-2 plumose setae; nail with a swollen base. Second thoracic exopod (Fig.
|
|
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. First thoracopod; B. Second thoracopod; C. Third thoracic endopod; D. Third thoracic exopod; E. Fourth thoracic endopod; F. Fifth thoracic endopod; G. Eighth thoracopod. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure4" httpUri="https://binary.pensoft.net/fig/564613" pageId="0" pageNumber="345">4B</figureCitation>
|
|
) with eight segments, last three segments with 1-2 plumose setae; robust thoracic endopod similar to the first thoracopod, but armed with lesser setae, from basis to dactylus bearing 1, 0, 2, 2, 6, 7 setae, respectively.
|
|
</paragraph>
|
|
<caption doi="10.3897/zse..68486.figure4" httpUri="https://binary.pensoft.net/fig/564613" pageId="0" pageNumber="345" start="Figure 4" startId="F4">
|
|
<paragraph pageId="0" pageNumber="345">
|
|
<emphasis bold="true" pageId="0" pageNumber="345">Figure 4.</emphasis>
|
|
<taxonomicName authorityName="Nurshazwan & Sawamoto & Rahim" authorityYear="2021" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis bumbumiensis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="species" species="bumbumiensis">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">Idiomysis bumbumiensis</emphasis>
|
|
</taxonomicName>
|
|
sp. nov., holotype (BL. 2.3 mm, UKMMZ-1611).
|
|
<emphasis bold="true" pageId="0" pageNumber="345">A.</emphasis>
|
|
First thoracopod;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">B.</emphasis>
|
|
Second thoracopod;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">C.</emphasis>
|
|
Third thoracic endopod;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">D.</emphasis>
|
|
Third thoracic exopod;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">E.</emphasis>
|
|
Fourth thoracic endopod;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">F.</emphasis>
|
|
Fifth thoracic endopod;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">G.</emphasis>
|
|
Eighth thoracopod. Scale bars equal 0.1 mm for A-G.
|
|
</paragraph>
|
|
</caption>
|
|
<paragraph pageId="0" pageNumber="345">
|
|
Third thoracic exopod (Fig.
|
|
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. First thoracopod; B. Second thoracopod; C. Third thoracic endopod; D. Third thoracic exopod; E. Fourth thoracic endopod; F. Fifth thoracic endopod; G. Eighth thoracopod. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure4" httpUri="https://binary.pensoft.net/fig/564613" pageId="0" pageNumber="345">4C, D</figureCitation>
|
|
) with nine segments, the last four segments with 1-2 plumose setae; thoracic endopod is more slender and elongate instead of robust, two-segmented carpopropodus, all segments are armed with setae, dactylus is smaller than in thoracopods 1-2, the nail is more slender than first and second thoracopods. The fourth thoracic endopod (Fig.
|
|
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. First thoracopod; B. Second thoracopod; C. Third thoracic endopod; D. Third thoracic exopod; E. Fourth thoracic endopod; F. Fifth thoracic endopod; G. Eighth thoracopod. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure4" httpUri="https://binary.pensoft.net/fig/564613" pageId="0" pageNumber="345">4E</figureCitation>
|
|
) is similar to the third thoracopod, carpopropodus, with 1-2 segments. The fifth thoracic endopod (Fig.
|
|
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. First thoracopod; B. Second thoracopod; C. Third thoracic endopod; D. Third thoracic exopod; E. Fourth thoracic endopod; F. Fifth thoracic endopod; G. Eighth thoracopod. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure4" httpUri="https://binary.pensoft.net/fig/564613" pageId="0" pageNumber="345">4F</figureCitation>
|
|
) is slightly longer than in the fourth thoracopod, merus nearly equal in length to the preceding segment, three-segmented carpopropodus, elongated and slender nail. Eighth thoracic exopod (Fig.
|
|
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. First thoracopod; B. Second thoracopod; C. Third thoracic endopod; D. Third thoracic exopod; E. Fourth thoracic endopod; F. Fifth thoracic endopod; G. Eighth thoracopod. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure4" httpUri="https://binary.pensoft.net/fig/564613" pageId="0" pageNumber="345">4G</figureCitation>
|
|
) with seven segments; thoracic endopod is smaller and more slender than other thoracopods, merus is longer than the preceding segment, separate carpopropodus, short and small dactylus, the nail is shorter than other thoracopods.
|
|
</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="345" type="pleopods">
|
|
<paragraph pageId="0" pageNumber="345">Pleopods.</paragraph>
|
|
<paragraph pageId="0" pageNumber="345">
|
|
Pleopods 1, 2, 3 and 5 (Fig.
|
|
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Pleopod 1; B. Pleopod 2; C. Pleopod 3; D. Pleopod 4; E. Pleopod 5; F. Uropod; G. Telson. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure5" httpUri="https://binary.pensoft.net/fig/564614" pageId="0" pageNumber="345">5A, C, E</figureCitation>
|
|
) reduce to simple separate plates, each with 4-6 setae of different lengths, longer than width; length of pleopod is more than twice its width. Male pleopod 4 (Fig.
|
|
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Pleopod 1; B. Pleopod 2; C. Pleopod 3; D. Pleopod 4; E. Pleopod 5; F. Uropod; G. Telson. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure5" httpUri="https://binary.pensoft.net/fig/564614" pageId="0" pageNumber="345">5D</figureCitation>
|
|
) has distinct endopod and exopod, both undivided and basally not separated by sutures; endopod with three plumose setae; exopod has one small terminal seta and a large-barbed seta (armed with a few setules).
|
|
</paragraph>
|
|
<caption doi="10.3897/zse..68486.figure5" httpUri="https://binary.pensoft.net/fig/564614" pageId="0" pageNumber="345" start="Figure 5" startId="F5">
|
|
<paragraph pageId="0" pageNumber="345">
|
|
<emphasis bold="true" pageId="0" pageNumber="345">Figure 5.</emphasis>
|
|
<taxonomicName authorityName="Nurshazwan & Sawamoto & Rahim" authorityYear="2021" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis bumbumiensis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="species" species="bumbumiensis">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">Idiomysis bumbumiensis</emphasis>
|
|
</taxonomicName>
|
|
sp. nov., holotype (BL. 2.3 mm, UKMMZ-1611).
|
|
<emphasis bold="true" pageId="0" pageNumber="345">A.</emphasis>
|
|
Pleopod 1;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">B.</emphasis>
|
|
Pleopod 2;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">C.</emphasis>
|
|
Pleopod 3;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">D.</emphasis>
|
|
Pleopod 4;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">E.</emphasis>
|
|
Pleopod 5;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">F.</emphasis>
|
|
Uropod;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">G.</emphasis>
|
|
Telson. Scale bars equal 0.1 mm for A-G.
|
|
</paragraph>
|
|
</caption>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="345" type="uropod and telson">
|
|
<paragraph pageId="0" pageNumber="345">Uropod and telson.</paragraph>
|
|
<paragraph pageId="0" pageNumber="345">
|
|
Uropod (Figs
|
|
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3C</figureCitation>
|
|
,
|
|
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Pleopod 1; B. Pleopod 2; C. Pleopod 3; D. Pleopod 4; E. Pleopod 5; F. Uropod; G. Telson. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure5" httpUri="https://binary.pensoft.net/fig/564614" pageId="0" pageNumber="345">5F</figureCitation>
|
|
) has a shorter endopod than exopod; both endopod and exopod have plumose setae all around, without setae on both margins of the proximal part of endopod and exopod; endopod with 14 plumose setae; exopod with 19 plumose setae; large statocyst (there are circular borders between ambitus versus tegmen and ambitus versus fundus). Telson (Figs
|
|
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Habitus; B. Anterior body, dorsal view; C. Posterior body, dorsal view; D. Antennule, obliques dorso-lateral view; E. Antennal; F. Mandible; G. Maxilla; H. Maxillula. Scale bars equal 0.1 mm for D-E; 1 mm for A; 0.4 mm B-C; 0.05 mm for F-H." figureDoi="10.3897/zse..68486.figure3" httpUri="https://binary.pensoft.net/fig/564612" pageId="0" pageNumber="345">3C</figureCitation>
|
|
,
|
|
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Idiomysis bumbumiensis sp. nov., holotype (BL. 2.3 mm, UKMMZ- 1611). A. Pleopod 1; B. Pleopod 2; C. Pleopod 3; D. Pleopod 4; E. Pleopod 5; F. Uropod; G. Telson. Scale bars equal 0.1 mm for A-G." figureDoi="10.3897/zse..68486.figure5" httpUri="https://binary.pensoft.net/fig/564614" pageId="0" pageNumber="345">5G</figureCitation>
|
|
) is approximately 1.12 times longer than the width and 0.8 times longer than the sixth abdominal somite; short, subtriangular with rounded tip; extending halfway across statocyst of endopod; smooth margin, except for apex with a pair of minute spines.
|
|
</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="345" type="female">
|
|
<paragraph pageId="0" pageNumber="345">Female.</paragraph>
|
|
<paragraph pageId="0" pageNumber="345">
|
|
Similar to male, except for the following differences: stouter and bulkier body (Fig.
|
|
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Idiomysis bumbumiensis sp. nov., allotype (BL. 3.2 mm, UKMMZ- 1612). A. Habitus; B. Antennule, oblique dorso-lateral view; C. Antennal; D. Pleopod 4; E. Telson. Scale bars equal 0.1 mm for B-E; 1 mm for A." figureDoi="10.3897/zse..68486.figure6" httpUri="https://binary.pensoft.net/fig/564615" pageId="0" pageNumber="345">6A</figureCitation>
|
|
) than male due to marsupium; marsupium of female on the eighth thoracopod is larger than seventh thoracopod, large with short setae along the distal margin. Antennule (Fig.
|
|
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Idiomysis bumbumiensis sp. nov., allotype (BL. 3.2 mm, UKMMZ- 1612). A. Habitus; B. Antennule, oblique dorso-lateral view; C. Antennal; D. Pleopod 4; E. Telson. Scale bars equal 0.1 mm for B-E; 1 mm for A." figureDoi="10.3897/zse..68486.figure6" httpUri="https://binary.pensoft.net/fig/564615" pageId="0" pageNumber="345">6B</figureCitation>
|
|
); inner flagellum with seven segments; outer flagellum with 12 segments; aesthetascs is present. Antennal scale (Fig.
|
|
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Idiomysis bumbumiensis sp. nov., allotype (BL. 3.2 mm, UKMMZ- 1612). A. Habitus; B. Antennule, oblique dorso-lateral view; C. Antennal; D. Pleopod 4; E. Telson. Scale bars equal 0.1 mm for B-E; 1 mm for A." figureDoi="10.3897/zse..68486.figure6" httpUri="https://binary.pensoft.net/fig/564615" pageId="0" pageNumber="345">6C</figureCitation>
|
|
) with suture present at 10%-14% from apex; from the base of antennal scale, 70% of the proximal outer margin is without plumose setae while 45% of the proximal inner margin is without plumose setae. Pleopod 4 (Fig.
|
|
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Idiomysis bumbumiensis sp. nov., allotype (BL. 3.2 mm, UKMMZ- 1612). A. Habitus; B. Antennule, oblique dorso-lateral view; C. Antennal; D. Pleopod 4; E. Telson. Scale bars equal 0.1 mm for B-E; 1 mm for A." figureDoi="10.3897/zse..68486.figure6" httpUri="https://binary.pensoft.net/fig/564615" pageId="0" pageNumber="345">6D</figureCitation>
|
|
) is similar to male pleopods 1-3, 5; longer than its width with six setae. Telson (Fig.
|
|
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Idiomysis bumbumiensis sp. nov., allotype (BL. 3.2 mm, UKMMZ- 1612). A. Habitus; B. Antennule, oblique dorso-lateral view; C. Antennal; D. Pleopod 4; E. Telson. Scale bars equal 0.1 mm for B-E; 1 mm for A." figureDoi="10.3897/zse..68486.figure6" httpUri="https://binary.pensoft.net/fig/564615" pageId="0" pageNumber="345">6E</figureCitation>
|
|
) is approximately 1.03 wider than its length; apex with a pair of minute spines.
|
|
</paragraph>
|
|
<caption doi="10.3897/zse..68486.figure6" httpUri="https://binary.pensoft.net/fig/564615" pageId="0" pageNumber="345" start="Figure 6" startId="F6">
|
|
<paragraph pageId="0" pageNumber="345">
|
|
<emphasis bold="true" pageId="0" pageNumber="345">Figure 6.</emphasis>
|
|
<taxonomicName authorityName="Nurshazwan & Sawamoto & Rahim" authorityYear="2021" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis bumbumiensis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="species" species="bumbumiensis">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">Idiomysis bumbumiensis</emphasis>
|
|
</taxonomicName>
|
|
sp. nov., allotype (BL. 3.2 mm, UKMMZ-1612).
|
|
<emphasis bold="true" pageId="0" pageNumber="345">A.</emphasis>
|
|
Habitus;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">B.</emphasis>
|
|
Antennule, oblique dorso-lateral view;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">C.</emphasis>
|
|
Antennal;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">D.</emphasis>
|
|
Pleopod 4;
|
|
<emphasis bold="true" pageId="0" pageNumber="345">E.</emphasis>
|
|
Telson. Scale bars equal 0.1 mm for B-E; 1 mm for A.
|
|
</paragraph>
|
|
</caption>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="345" type="etymology">
|
|
<paragraph pageId="0" pageNumber="345">Etymology.</paragraph>
|
|
<paragraph pageId="0" pageNumber="345">The specific epithet refers to the type locality; Pulau Bum Bum, Sabah, Borneo, Malaysia.</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="345" type="colouration in freshly fixed specimens">
|
|
<paragraph pageId="0" pageNumber="345">Colouration in freshly fixed specimens</paragraph>
|
|
<paragraph pageId="0" pageNumber="345">
|
|
(based on UKMMZ-1611, BL. 2.3 mm; UKMMZ-1612, BL. 3.2 mm; Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Idiomysis bumbumiensis sp. nov. (freshly fixed), A. Lateral view of the holotype (BL. 2.3 mm, UKMMZ- 1611); B. Lateral view of allotype (BL. 3.2 mm, UKMMZ- 1612)." figureDoi="10.3897/zse..68486.figure2" httpUri="https://binary.pensoft.net/fig/564611" pageId="0" pageNumber="345">2A, B</figureCitation>
|
|
). Zesty orange eyes. Antennal scale, carapace including thoracic and translucent abdominal somites with a combination of small orange, yellow and black patches.
|
|
</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="345" type="remarks">
|
|
<paragraph pageId="0" pageNumber="345">Remarks.</paragraph>
|
|
<paragraph pageId="0" pageNumber="345">
|
|
The present species is the seventh member of the genus
|
|
<taxonomicName authorityName="W.M.Tattersall" authorityYear="1922" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="genus">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">Idiomysis</emphasis>
|
|
</taxonomicName>
|
|
, but it is the first species of this genus to be described in Southeast Asia. It is also the third species of the tribe
|
|
<taxonomicName authorityName="Wittmann, Ariani & Lagardere" authorityYear="2014" lsidName="" pageId="0" pageNumber="345" rank="tribe" tribe="Anisomysini">Anisomysini</taxonomicName>
|
|
found in Malaysian waters besides
|
|
<taxonomicName authorityName="Ii" authorityYear="1964" class="Malacostraca" family="Mysidae" genus="Anisomysis" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" lsidName="Anisomysis (Anisomysis) aikawai" order="Mysida" pageId="0" pageNumber="345" phylum="Arthropoda" rank="species" species="aikawai" subGenus="Anisomysis">Anisomysis (Anisomysis) aikawai</taxonomicName>
|
|
Ii, 1964 and
|
|
<taxonomicName genus="A." lsidName="A. (Paranisomysis) ohtsukai" pageId="0" pageNumber="345" rank="species" species="ohtsukai" subGenus="Paranisomysis">A. (Paranisomysis) ohtsukai</taxonomicName>
|
|
Murano, 1994 (
|
|
<bibRefCitation author="Moriya, M" journalOrPublisher="WWF-Malaysia, Kota Kinabalu" pageId="0" pageNumber="345" refId="B15" refString="Moriya, M, 2016. Study on the diversity of Mysidacea in Southeast Asia. PhD Thesis, University of Tokyo, Tokyo." title="Study on the diversity of Mysidacea in Southeast Asia. PhD Thesis, University of Tokyo, Tokyo." year="2016">Moriya 2016</bibRefCitation>
|
|
;
|
|
<bibRefCitation DOI="https://doi.org/10.1590/2358-2936e2018037" author="Tan, HS" journalOrPublisher="Marine Research in Indonesia" pageId="0" pageNumber="345" refId="B19" refString="Tan, HS, Azman, BAR, 2018. Diversity of coastal mysids from Pulau Tinggi, Sultan Iskandar Marine Park, Malaysia. Nauplius - The Journal of the Brazilian Crustacean Society 26: e2018037. https://doi.org/10.1590/2358-2936e2018037" title="Diversity of coastal mysids from Pulau Tinggi, Sultan Iskandar Marine Park, Malaysia. Nauplius - The Journal of the Brazilian Crustacean Society 26: e 2018037." url="https://doi.org/10.1590/2358-2936e2018037" year="2018">Tan and Azman 2018</bibRefCitation>
|
|
). The genus
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|
<taxonomicName authorityName="W.M.Tattersall" authorityYear="1922" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="genus">
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<emphasis italics="true" pageId="0" pageNumber="345">Idiomysis</emphasis>
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</taxonomicName>
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can be easily classified into two groups, based on the antennal scale; (i) entire or (ii) 2 segments.
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<taxonomicName authorityName="W.M.Tattersall" authorityYear="1922" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis inermis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="species" species="inermis">
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<emphasis italics="true" pageId="0" pageNumber="345">Idiomysis inermis</emphasis>
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</taxonomicName>
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|
,
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|
<taxonomicName genus="I." lsidName="I. mozambica" pageId="0" pageNumber="345" rank="species" species="mozambica">
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<emphasis italics="true" pageId="0" pageNumber="345">I. mozambica</emphasis>
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</taxonomicName>
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|
,
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|
<taxonomicName genus="I." lsidName="I. robusta" pageId="0" pageNumber="345" rank="species" species="robusta">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. robusta</emphasis>
|
|
</taxonomicName>
|
|
and
|
|
<taxonomicName genus="I." lsidName="I. tsurnamali" pageId="0" pageNumber="345" rank="species" species="tsurnamali">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. tsurnamali</emphasis>
|
|
</taxonomicName>
|
|
are in the group of an entire antennal scale, while
|
|
<taxonomicName genus="I." lsidName="I. diadema" pageId="0" pageNumber="345" rank="species" species="diadema">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. diadema</emphasis>
|
|
</taxonomicName>
|
|
and
|
|
<taxonomicName genus="I." lsidName="I. japonica" pageId="0" pageNumber="345" rank="species" species="japonica">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. japonica</emphasis>
|
|
</taxonomicName>
|
|
are in the group of two-segmented antennal scale. The presence of the spine, which is exclusively in
|
|
<taxonomicName genus="I." lsidName="I. robusta" pageId="0" pageNumber="345" rank="species" species="robusta">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. robusta</emphasis>
|
|
</taxonomicName>
|
|
, distinguishes the group with the entire antennal scale. The present new species,
|
|
<taxonomicName authorityName="Nurshazwan & Sawamoto & Rahim" authorityYear="2021" class="Malacostraca" family="Mysidae" genus="Idiomysis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Idiomysis bumbumiensis" order="Mysida" pageId="0" pageNumber="345" phylum="Schizopoda" rank="species" species="bumbumiensis">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">Idiomysis bumbumiensis</emphasis>
|
|
</taxonomicName>
|
|
sp. nov., has two antennal scale segments, similar to
|
|
<taxonomicName genus="I." lsidName="I. diadema" pageId="0" pageNumber="345" rank="species" species="diadema">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. diadema</emphasis>
|
|
</taxonomicName>
|
|
and
|
|
<taxonomicName genus="I." lsidName="I. japonica" pageId="0" pageNumber="345" rank="species" species="japonica">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. japonica</emphasis>
|
|
</taxonomicName>
|
|
. However, they can be differentiated by observing the apex of the telson. Both
|
|
<taxonomicName genus="I." lsidName="I. diadema" pageId="0" pageNumber="345" rank="species" species="diadema">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. diadema</emphasis>
|
|
</taxonomicName>
|
|
and
|
|
<taxonomicName genus="I." lsidName="I. bumbumiensis" pageId="0" pageNumber="345" rank="species" species="bumbumiensis">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. bumbumiensis</emphasis>
|
|
</taxonomicName>
|
|
sp. nov have a pair of minute apical spines exclusive to these two species; on the other hand,
|
|
<taxonomicName genus="I." lsidName="I. japonica" pageId="0" pageNumber="345" rank="species" species="japonica">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. japonica</emphasis>
|
|
</taxonomicName>
|
|
has a bluntly rounded telson apex. The endopodal uropod in
|
|
<taxonomicName genus="I." lsidName="I. diadema" pageId="0" pageNumber="345" rank="species" species="diadema">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. diadema</emphasis>
|
|
</taxonomicName>
|
|
shows a clear extension beyond the exopod, but this structure is shorter than the exopod in
|
|
<taxonomicName genus="I." lsidName="I. bumbumiensis" pageId="0" pageNumber="345" rank="species" species="bumbumiensis">
|
|
<emphasis italics="true" pageId="0" pageNumber="345">I. bumbumiensis</emphasis>
|
|
</taxonomicName>
|
|
.
|
|
</paragraph>
|
|
</subSubSection>
|
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</treatment>
|
|
</document> |