<documentid="8F2E88BC784D52A2243BE5B940E35AC6"ID-DOI="10.12651/JSR.2024.13.2.185"ID-ISSN="2713-8615"ID-Zenodo-Dep="13344859"IM.bibliography_approvedBy="carolina"IM.illustrations_approvedBy="felipe"IM.materialsCitations_approvedBy="felipe"IM.metadata_approvedBy="felipe"IM.tables_requiresApprovalFor="GgImagineBatch"IM.taxonomicNames_approvedBy="felipe"IM.treatments_approvedBy="felipe"checkinTime="1722550107885"checkinUser="felipe"docAuthor="Lee, Il-Hoi Kim and Taekjun"docDate="2024"docId="ED1887CBFFE7FFF0FF41B35FB34065D9"docLanguage="en"docName="JSpeciesRes.13.2.185-254.pdf"docOrigin="Journal of Species Research 13 (2)"docStyle="DocumentStyle:4D398BFF45FF8CA9E08F546BB06AE372.2:JSpeciesRes.2012-.journal_article"docStyleId="4D398BFF45FF8CA9E08F546BB06AE372"docStyleName="JSpeciesRes.2012-.journal_article"docStyleVersion="2"docTitle="Asterocheres eurychelatus Lee, 2024, n. sp."docType="treatment"docVersion="3"lastPageNumber="212"masterDocId="1121FFB3FFFEFFEBFFD1B25AB0306275"masterDocTitle="Copepods of the genus Asterocheres Boeck, 1859 (Siphonostomatoida: Asterocheridae) from Korean waters"masterLastPageNumber="254"masterPageNumber="185"pageNumber="210"updateTime="1724091014337"updateUser="ExternalLinkService"zenodo-license-document="CC-BY-4.0">
<mods:titleid="8EC6E4AC00F6C5B2647615BF9EF4EFC4">Copepods of the genus Asterocheres Boeck, 1859 (Siphonostomatoida: Asterocheridae) from Korean waters</mods:title>
<figureCitationid="FD8A2A58FFE7FFF2FDB7B35FB2B26368"box="[614,642,261,285]"captionStart="Fig"captionStartId="27.[144,177,1595,1617]"captionTargetBox="[220,1333,263,1557]"captionTargetId="figure-167@27.[141,1416,254,1575]"captionTargetPageId="27"captionText="Fig. 15. Asterocheres eurychelatus n. sp., female.A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02mm."figureDoi="http://doi.org/10.5281/zenodo.13344891"httpUri="https://zenodo.org/record/13344891/files/figure.png"pageId="25"pageNumber="210">15</figureCitation>
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<collectingDateid="014BE9F5FFE7FFF2FD00B05DB13F6035"pageId="25"pageNumber="210"value="2023-04-27">27 April 2023</collectingDate>
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.
<materialsCitationid="D5D93C80FFE7FFF2FECDB07DB1FD60D5"collectionCode="MABIK"collectorName="Seocheon & Dissected & I. - H. Kim"country="South Korea"location="Korea"pageId="25"pageNumber="210"specimenCount="3"typeStatus="holotype">
<figureCitationid="FD8A2A58FFE7FFF2FEE8B6D6B1AF66D1"box="[313,415,1164,1188]"captionStart="Fig"captionStartId="27.[144,177,1595,1617]"captionTargetBox="[220,1333,263,1557]"captionTargetId="figure-167@27.[141,1416,254,1575]"captionTargetPageId="27"captionText="Fig. 15. Asterocheres eurychelatus n. sp., female.A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02mm."figureDoi="http://doi.org/10.5281/zenodo.13344891"httpUri="https://zenodo.org/record/13344891/files/figure.png"pageId="25"pageNumber="210">Fig. 15G</figureCitation>
) 223 μm long, 20-segmented; 9th, 18th, and terminal segments with 7 setae, 2 setae + aesthetasc, 11 setae, respectively, all other segments each with 2 setae; all setae naked. Antenna (
) with short, unarmed coxa; basis 61 μm long, unarmed but bearing longitudinal row of minute spinules; exopod small, 9× 4.8 μm, bearing 3 small setae; first endopodal segment 45 μm long, unarmed but bearing longitudinal row of small spinules; second endopodal segment short, with 1 spiniform seta subdistally; third endopodal segment 16 μm long, distally with 1 spine (18 μm long) and 1 small seta and terminated in robust claw of 35 μm long.
) bilobed; small outer lobe 17 μm long, distally with 4 setae (lengths of these setae 54, 49, 43, and 22 μm, respectively); inner lobe about 55 μm long, about 3.2 times longer than outer lobe, tipped with 1 minute and 4 large setae (lengths of 4 large setae 63, 62, 58, and 40 μm, respectively). Maxilla (
) 2-segmentd; proximal segment bearing row of about 10 spinules at proximal region; distal segment (chela) about 1.2 times longer than proximal segment, bearing row of minute spinules along distal third. Maxilliped (
<figureCitationid="FD8A2A58FFE7FFF2FCBAB012B3FD602A"box="[875,973,583,608]"captionStart="Fig"captionStartId="27.[144,177,1595,1617]"captionTargetBox="[220,1333,263,1557]"captionTargetId="figure-167@27.[141,1416,254,1575]"captionTargetPageId="27"captionText="Fig. 15. Asterocheres eurychelatus n. sp., female.A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02mm."figureDoi="http://doi.org/10.5281/zenodo.13344891"httpUri="https://zenodo.org/record/13344891/files/figure.png"pageId="25"pageNumber="210">Fig. 15A</figureCitation>
<figureCitationid="FD8A2A58FFE7FFF2FC4BB0B3B4306174"box="[922,1024,745,769]"captionStart="Fig"captionStartId="27.[144,177,1595,1617]"captionTargetBox="[220,1333,263,1557]"captionTargetId="figure-167@27.[141,1416,254,1575]"captionTargetPageId="27"captionText="Fig. 15. Asterocheres eurychelatus n. sp., female.A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02mm."figureDoi="http://doi.org/10.5281/zenodo.13344891"httpUri="https://zenodo.org/record/13344891/files/figure.png"pageId="25"pageNumber="210">Fig. 15B</figureCitation>
<figureCitationid="FD8A2A58FFE7FFF2FBE2B0B3B4A96174"box="[1075,1177,745,769]"captionStart="Fig"captionStartId="27.[144,177,1595,1617]"captionTargetBox="[220,1333,263,1557]"captionTargetId="figure-167@27.[141,1416,254,1575]"captionTargetPageId="27"captionText="Fig. 15. Asterocheres eurychelatus n. sp., female.A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02mm."figureDoi="http://doi.org/10.5281/zenodo.13344891"httpUri="https://zenodo.org/record/13344891/files/figure.png"pageId="25"pageNumber="210">Fig. 15C</figureCitation>
<figureCitationid="FD8A2A58FFE7FFF2FACAB0B3B54D6174"box="[1307,1405,745,769]"captionStart="Fig"captionStartId="27.[144,177,1595,1617]"captionTargetBox="[220,1333,263,1557]"captionTargetId="figure-167@27.[141,1416,254,1575]"captionTargetPageId="27"captionText="Fig. 15. Asterocheres eurychelatus n. sp., female.A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02mm."figureDoi="http://doi.org/10.5281/zenodo.13344891"httpUri="https://zenodo.org/record/13344891/files/figure.png"pageId="25"pageNumber="210">Fig. 15E</figureCitation>
) biramous, with 3-segmented rami. Distal margin of intercoxal plate bearing several spinules in leg 1, setules in leg 2, but smooth in legs 3 and 4. Inner distal seta on basis of leg 1 broad. Second endopodal segment of legs 1-4 with bicuspid outer distal corner. Leg 3 same as leg 2, except bearing 1 spine plus 5 setae on third endopodal segment (
<figureCitationid="FD8A2A58FFE7FFF2FC5FB191B3C26196"box="[910,1010,971,995]"captionStart="Fig"captionStartId="27.[144,177,1595,1617]"captionTargetBox="[220,1333,263,1557]"captionTargetId="figure-167@27.[141,1416,254,1575]"captionTargetPageId="27"captionText="Fig. 15. Asterocheres eurychelatus n. sp., female.A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02mm."figureDoi="http://doi.org/10.5281/zenodo.13344891"httpUri="https://zenodo.org/record/13344891/files/figure.png"pageId="25"pageNumber="210">Fig. 15D</figureCitation>
). Leg 4 lacking inner coxal seta. Distal spine on third endopodal segment of leg 3 and 4 fusiform, shorter than segment. Armature formula for legs 1-4 as in
<figureCitationid="FD8A2A58FFE7FFF2FCE0B6D6B3BE66D1"box="[817,910,1164,1188]"captionStart="Fig"captionStartId="27.[144,177,1595,1617]"captionTargetBox="[220,1333,263,1557]"captionTargetId="figure-167@27.[141,1416,254,1575]"captionTargetPageId="27"captionText="Fig. 15. Asterocheres eurychelatus n. sp., female.A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02mm."figureDoi="http://doi.org/10.5281/zenodo.13344891"httpUri="https://zenodo.org/record/13344891/files/figure.png"pageId="25"pageNumber="210">Fig. 15F</figureCitation>
) 1.89 times longer than wide (36 × 19 μm), fusiform, bearing 3 naked setae (31, 36, and 31 μm long, respectively, from outer to inner), and ornamented with few spinules on inner and outer margins. Leg 6 (
<figureCitationid="FD8A2A58FFE7FFF2FA89B6B7B3686750"captionStart="Fig"captionStartId="27.[144,177,1595,1617]"captionTargetBox="[220,1333,263,1557]"captionTargetId="figure-167@27.[141,1416,254,1575]"captionTargetPageId="27"captionText="Fig. 15. Asterocheres eurychelatus n. sp., female.A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02mm."figureDoi="http://doi.org/10.5281/zenodo.13344891"httpUri="https://zenodo.org/record/13344891/files/figure.png"pageId="25"pageNumber="210">Fig. 15G</figureCitation>
(1) the caudal ramus is short, not longer than wide; (2) the antennule of the female is 20-segmented; (3) the mandibular palp is 1-segmented; and (4) leg 4 lacks an inner seta on the coxa. The new species shares this combination of the diagnostic features with six congeners:
<bibRefCitationid="01204B2CFFE7FFF2FAEEB46AB353641D"author="Stock, J. H."pageId="25"pageNumber="210"pagination="145 - 194"refId="ref38392"refString="Stock, J. H. 1966. Cyclopoida siphonostoma from Mauritius (Crustacea, Copepoda). Beaufortia 13 (159): 145 - 194."type="journal article"year="1966">Stock, 1966</bibRefCitation>
</taxonomicName>
;
<taxonomicNameid="A2B14D5EFFE7FFF2FCA0B40AB489641D"authority="Nair & Pillai, 1984"authorityName="Nair & Pillai"authorityYear="1984"box="[881,1209,1616,1640]"class="Copepoda"family="Asterocheridae"genus="Asterocheres"kingdom="Animalia"order="Siphonostomatoida"pageId="25"pageNumber="210"phylum="Arthropoda"rank="species"species="stocki">
<bibRefCitationid="01204B2CFFE7FFF2FC0AB40AB489641D"author="Nair, B. U. & N. K. Pillai"box="[987,1209,1616,1640]"pageId="25"pageNumber="210"pagination="357 - 372"refId="ref38126"refString="Nair, B. U. and N. K. Pillai. 1984. On three new species of asterocherid copepods, with a redescription of Indomyzon quasimi. Records of the Zoological Survey of India 81 (3 / 4): 357 - 372."type="journal article"year="1984">Nair & Pillai, 1984</bibRefCitation>
<bibRefCitationid="01204B2CFFE7FFF2FB70B42AB52D64FC"author="Malt, S."box="[1185,1309,1648,1673]"pageId="25"pageNumber="210"pagination="167 - 183"refId="ref38019"refString="Malt, S. 1991. The copepod inhabitants of sponges and algae from Hong Kong. Bulletin of the British Museum of Natural History (Zoology) 57 (2): 167 - 183."type="journal article"year="1991">Malt, 1991</bibRefCitation>
</taxonomicName>
. The first three species are easily separated from the new species by their unusually long oral siphon, which extends beyond leg
<taxonomicNameid="A2B14D5EFFE7FFF2FB72B548B531655F"authorityName="Nair & Pillai"authorityYear="1984"box="[1187,1281,1810,1834]"class="Copepoda"family="Asterocheridae"genus="Asterocheres"kingdom="Animalia"order="Siphonostomatoida"pageId="25"pageNumber="210"phylum="Arthropoda"rank="species"species="stocki">
<bibRefCitationid="01204B2CFFE7FFF2FAE8B548B39D653F"author="Nair, B. U. & N. K. Pillai"pageId="25"pageNumber="210"pagination="357 - 372"refId="ref38126"refString="Nair, B. U. and N. K. Pillai. 1984. On three new species of asterocherid copepods, with a redescription of Indomyzon quasimi. Records of the Zoological Survey of India 81 (3 / 4): 357 - 372."type="journal article"year="1984">Nair & Pillai, 1984</bibRefCitation>
also differs from the new species in having only one seta on the first segment of the antennule as described and illustrated by
<bibRefCitationid="01204B2CFFE5FFF0FF41B4E8B13F64BF"author="Malt, S."box="[144,271,1714,1738]"pageId="27"pageNumber="212"pagination="167 - 183"refId="ref38019"refString="Malt, S. 1991. The copepod inhabitants of sponges and algae from Hong Kong. Bulletin of the British Museum of Natural History (Zoology) 57 (2): 167 - 183."type="journal article"year="1991">Malt (1991)</bibRefCitation>
, which was confirmed by
<bibRefCitationid="01204B2CFFE5FFF0FDF6B4E8B0CD649F"author="Bandera, E. & M. Conradi"pageId="27"pageNumber="212"refId="ref36164"refString="Bandera, E. and M. Conradi. 2009 b. Two copepod species largely confused: Asterocheres echinicola (Norman, 1868) and A. violaceus (Claus, 1889). Taxonomic implications. Helgoland Marine Research 63: 261 - 176. https: // doi. org / 10.1007 / s 10152 - 009 - 0154 - y"type="journal volume"year="2009">Bandera & Conradi (2009b)</bibRefCitation>
, female. A, maxilliped; B, leg 1; C, leg 2; D, endopod of leg 3; E, leg 4; F, exopod of leg 5; G, left side of genital double-somite, dorsal. Scale bars: 0.02 mm.
<bibRefCitationid="01204B2CFFE5FFF0FE70B549B216655E"author="Schirl, K."box="[417,550,1811,1835]"pageId="27"pageNumber="212"pagination="64 - 92"refId="ref38271"refString="Schirl, K. 1973. Cyclopoida Siphonostoma (Crustacea) von Banyuls (Frankreich, Pyrenees-Orientales) mit besonderer Berucksichtigung des Gast-Wirtverhaltnisses. Bijdragen tot de Dierkunde 43 (1): 64 - 92."type="journal article"year="1973">Schirl, 1973</bibRefCitation>
<taxonomicNameid="A2B14D5EFFE5FFF0FE85B569B2D9653E"authority="Thompson & A. Scott, 1903"authorityName="Thompson & A. Scott"authorityYear="1903"box="[340,745,1843,1867]"class="Copepoda"family="Asterocheridae"genus="Asterocheres"kingdom="Animalia"order="Siphonostomatoida"pageId="27"pageNumber="212"phylum="Arthropoda"rank="species"species="minor">
is much thinner than that of the new species and reaches leg 1 (
<bibRefCitationid="01204B2CFFE5FFF0FD72B5CEB0FA65B9"author="Schirl, K."pageId="27"pageNumber="212"pagination="64 - 92"refId="ref38271"refString="Schirl, K. 1973. Cyclopoida Siphonostoma (Crustacea) von Banyuls (Frankreich, Pyrenees-Orientales) mit besonderer Berucksichtigung des Gast-Wirtverhaltnisses. Bijdragen tot de Dierkunde 43 (1): 64 - 92."type="journal article"year="1973">Schirl, 1973</bibRefCitation>
), the prosome of
<taxonomicNameid="A2B14D5EFFE5FFF0FE43B5EEB1C365B9"authorityName="Thompson & A. Scott"authorityYear="1903"box="[402,499,1972,1996]"class="Copepoda"family="Asterocheridae"genus="Asterocheres"kingdom="Animalia"order="Siphonostomatoida"pageId="27"pageNumber="212"phylum="Arthropoda"rank="species"species="minor">
is circular and its abdominal somites are longer than wide as illustrated by
<bibRefCitationid="01204B2CFFE5FFF0FCF8B488B460649F"author="Thompson, I. C. & A. Scott"box="[809,1104,1746,1770]"pageId="27"pageNumber="212"pagination="227 - 307"refId="ref38486"refString="Thompson, I. C. and A. Scott. 1903. Report on the Copepoda collected by Professor Herdman, at Ceylon, in 1902. In: Herdman, W. A. (ed.). Report to the Government of Ceylon on the Pearl Oyster Fisheries of the Gulf of Manaar 1, suppl. 7: 227 - 307, pls. 1 - 20."type="journal article"year="1903">Thompson & Scott (1903)</bibRefCitation>
<bibRefCitationid="01204B2CFFE5FFF0FBCDB549B4E7655E"author="Giesbrecht, W."box="[1052,1239,1811,1835]"pageId="27"pageNumber="212"pagination="1 - 11"refId="ref37237"refString="Giesbrecht, W. 1899. Die Asterocheriden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. Fauna und Flora des Golfes von Neapel und der Angrenzenden Meeres-Abschnitte, Herausgegeben von der Zoologischen Station zu Neapel 25: i-vi, 1 - 217, pls. 1 - 11."type="journal article"year="1899">Giesbrecht, 1899</bibRefCitation>