<documentid="357EC67C2230B844E2E1927469070BAB"ID-CLB-Dataset="296805"ID-DOI="10.1093/zoolinnean/zlad077"ID-GBIF-Dataset="a5f57d75-9b7c-46dc-b11f-ee2fc4200e29"ID-ISSN="0024-4082"ID-Zenodo-Dep="11239996"ID-ZooBank="E48CE650-52B3-4853-9249-D228B9E00306C"IM.bibliography_approvedBy="guilherme"IM.illustrations_approvedBy="guilherme"IM.materialsCitations_approvedBy="felipe"IM.metadata_approvedBy="felipe"IM.tables_requiresApprovalFor="GgImagineBatch,operationResults"IM.taxonomicNames_approvedBy="guilherme"IM.treatments_approvedBy="guilherme"checkinTime="1716361067006"checkinUser="plazi"docAuthor="Lunina, Anastasiia, Kulagin, Dmitry & Vereshchaka, Alexander"docDate="2024"docId="03B987DA2257B663FEC93649FCF1BC19"docLanguage="en"docName="zlad077.pdf"docOrigin="Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 200 (2)"docSource="http://dx.doi.org/10.1093/zoolinnean/zlad077"docStyle="DocumentStyle:4F230B9370E98E256D973D6DFB57F36C.6:ZoolJLinnSoc.2023-.journal_article"docStyleId="4F230B9370E98E256D973D6DFB57F36C"docStyleName="ZoolJLinnSoc.2023-.journal_article"docStyleVersion="6"docTitle="Hymenodoridae Lunina & Kulagin & Vereshchaka 2024, fam. nov."docType="treatment"docVersion="4"lastPageNumber="348"masterDocId="FF80FFA2225CB66FFFDC3007FF83BD1F"masterDocTitle="The taxonomic status of Hymenodora (Crustacea: Oplophoroidea): morphological and molecular analyses suggest a new family and an undescribed diversity deep in the sea"masterLastPageNumber="351"masterPageNumber="336"pageNumber="347"updateTime="1732691561270"updateUser="ExternalLinkService">
<mods:titleid="CB40EBADA0D0DA461C0F90ADF22939E3">The taxonomic status of Hymenodora (Crustacea: Oplophoroidea): morphological and molecular analyses suggest a new family and an undescribed diversity deep in the sea</mods:title>
<taxonomicNameid="4C104D4F2257B664FEBE3649FD90BB77"authority="Lunina & Kulagin & Vereshchaka, 2024"authorityName="Lunina & Kulagin & Vereshchaka"authorityYear="2024"box="[354,531,1614,1640]"class="Malacostraca"family="Hymenodoridae"higherTaxonomySource="CoL"kingdom="Animalia"order="Decapoda"pageId="11"pageNumber="347"phylum="Arthropoda"rank="family"status="fam. nov.">Hymenodoridae</taxonomicName>
<taxonomicNameid="4C104D4F2257B664FF5D3672FEA8BB92"authorityName="Lunina & Kulagin & Vereshchaka"authorityYear="2024"box="[129,299,1653,1677]"family="Hymenodoridae"pageId="11"pageNumber="349"rank="family">Hymenodoridae</taxonomicName>
<figureCitationid="132B2A492257B664FF3036C9FEC8BBFA"box="[236,331,1742,1765]"captionStart="Figure 7"captionStartId="11.[129,194,1351,1375]"captionTargetBox="[162,1441,146,1321]"captionTargetId="figure-226@11.[160,1443,144,1323]"captionTargetPageId="11"captionText="Figure 7. Morphological characters distinguishing three families of Oplophoroidea.A–E, Hymenodoridae (Hymenodora frontalis, St. 7497 d271) mandibles (A), second maxilla (B), proximal endite of second maxilla (C), first maxilliped (D) and second maxilliped (E). F–J, Oplophoridae (Systellaspis debilis, 179RT 23.1) mandibles (F), second maxilla (G), proximal endite of second maxilla (H), first maxilliped (I) and second maxilliped (J). K–O, Acanthephyridae (Acanthephyra quadrispinosa Kemp, 1939, AMK87 7277-D13) mandibles (K), second maxilla (L), proximal endite of second maxilla (M), first maxilliped (N) and second maxilliped (O). All scale bars:1 mm."figureDoi="http://doi.org/10.5281/zenodo.11240012"httpUri="https://zenodo.org/record/11240012/files/figure.png"pageId="11"pageNumber="347">Fig. 7A–E</figureCitation>
):
</emphasis>
rostrum dorsally dentate and ventrally unarmed; second maxilla with elongate proximal endite lacking submarginal papilla and lamina; first maxilliped with two-segmented endopod at least two times as long as distal endite; second maxilliped with distal segment suboval (
<taxonomicNameid="4C104D4F2257B664FE3C374CFDDFBA7C"authorityName="G. O. Sars"authorityYear="1877"box="[480,604,1867,1891]"class="Malacostraca"family="Oplophoridae"genus="Hymenodora"higherTaxonomySource="GBIF"kingdom="Animalia"order="Decapoda"pageId="11"pageNumber="347"phylum="Arthropoda"rank="genus">
<taxonomicNameid="4C104D4F2257B664FF57376DFF6DBA9D"authorityName="Vereshchaka, Kulagin & Lunina"authorityYear="2021"box="[139,238,1898,1922]"class="Malacostraca"family="Acanthephyridae"genus="Sclerodora"kingdom="Animalia"order="Decapoda"pageId="11"pageNumber="347"phylum="Arthropoda"rank="genus">
<taxonomicNameid="4C104D4F2257B664FF24379DFE64BAAD"authority="Sars, 1877"authorityName="G. O. Sars"authorityYear="1877"box="[248,487,1946,1970]"class="Malacostraca"family="Oplophoridae"genus="Hymenodora"higherTaxonomySource="GBIF"kingdom="Animalia"order="Decapoda"pageId="11"pageNumber="347"phylum="Arthropoda"rank="genus">
<taxonomicNameid="4C104D4F2257B664FC3C35FBFB4FBB0B"authority="Sars, 1877"authorityName="G. O. Sars"authorityYear="1877"box="[992,1228,1532,1556]"class="Malacostraca"family="Oplophoridae"genus="Hymenodora"higherTaxonomySource="GBIF"kingdom="Animalia"order="Decapoda"pageId="11"pageNumber="347"phylum="Arthropoda"rank="genus">
<taxonomicNameid="4C104D4F2257B664FB0F35FBFBB2BB2B"authority="Vereshchaka, Kulagin & Lunina, 2021"authorityName="Vereshchaka, Kulagin & Lunina"authorityYear="2021"class="Malacostraca"family="Acanthephyridae"genus="Sclerodora"kingdom="Animalia"order="Decapoda"pageId="11"pageNumber="347"phylum="Arthropoda"rank="genus">
<bibRefCitationid="EF814B3D2257B664FAE035FBFBB2BB2B"author="Vereshchaka A & Kulagin D & Lunina A"pageId="11"pageNumber="347"pagination="536"refId="ref11584"refString="Vereshchaka A, Kulagin D, Lunina A. A new shrimp genus (Crustacea: Decapoda) from the Deep Atlantic and an unusual cleaning mechanism of pelagic decapods. Diversity 2021; 13: 536."type="journal article"year="2021">Vereshchaka, Kulagin & Lunina, 2021</bibRefCitation>
<bibRefCitationid="EF814B3D2257B664FC703667FBCFBB67"author="Chace FA Jr."box="[940,1100,1632,1656]"pageId="11"pageNumber="347"pagination="1 - 82"refId="ref10426"refString="Chace FA Jr. The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition 1907 - 1910, Part 4: Oplophoridae and Nematocarcinidae. Smithsonian Contributions to Zoology 1986; 432: 1 - 82."type="journal article"year="1986">Chace (1986)</bibRefCitation>
wrote that mandibles are dissimilar (molar process ‘compressed and sub-bilinear on left’;
<bibRefCitationid="EF814B3D2257B664FCAD3698FB93BBA8"author="Chace FA Jr."box="[881,1040,1695,1719]"pageId="11"pageNumber="347"pagination="1 - 82"refId="ref10426"refString="Chace FA Jr. The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition 1907 - 1910, Part 4: Oplophoridae and Nematocarcinidae. Smithsonian Contributions to Zoology 1986; 432: 1 - 82."type="journal article"year="1986">Chace 1986: 6</bibRefCitation>
<taxonomicNameid="4C104D4F2257B664FB063698FAB4BBA8"authorityName="S. I. Smith"authorityYear="1885"box="[1242,1335,1695,1719]"class="Malacostraca"family="Oplophoridae"genus="Ephyrina"higherTaxonomySource="GBIF"kingdom="Animalia"order="Decapoda"pageId="11"pageNumber="347"phylum="Arthropoda"rank="genus">
<taxonomicNameid="4C104D4F2257B664FCE536B9FC38BBC9"authorityName="G. O. Sars"authorityYear="1877"box="[825,955,1726,1750]"class="Malacostraca"family="Oplophoridae"genus="Hymenodora"higherTaxonomySource="GBIF"kingdom="Animalia"order="Decapoda"pageId="11"pageNumber="347"phylum="Arthropoda"rank="genus">
<taxonomicNameid="4C104D4F2257B664FB9E36B9FB45BBC9"authorityName="S. I. Smith"authorityYear="1882"box="[1090,1222,1726,1750]"class="Malacostraca"family="Oplophoridae"genus="Meningodora"higherTaxonomySource="GBIF"kingdom="Animalia"order="Decapoda"pageId="11"pageNumber="347"phylum="Arthropoda"rank="genus">
<taxonomicNameid="4C104D4F2257B664FBC036DAFB4EBBEA"authorityName="Lunina & Kulagin & Vereshchaka"authorityYear="2024"box="[1052,1229,1757,1781]"family="Hymenodoridae"pageId="11"pageNumber="349"rank="family">Hymenodoridae</taxonomicName>
, mandibles are similar. The shape of the mandibles would be a strong diagnostic character but, after examination of these structures (
<figureCitationid="132B2A492257B664FBBF373CFB6FBA4C"box="[1123,1260,1851,1876]"captionStart="Figure 7"captionStartId="11.[129,194,1351,1375]"captionTargetBox="[162,1441,146,1321]"captionTargetId="figure-226@11.[160,1443,144,1323]"captionTargetPageId="11"captionText="Figure 7. Morphological characters distinguishing three families of Oplophoroidea.A–E, Hymenodoridae (Hymenodora frontalis, St. 7497 d271) mandibles (A), second maxilla (B), proximal endite of second maxilla (C), first maxilliped (D) and second maxilliped (E). F–J, Oplophoridae (Systellaspis debilis, 179RT 23.1) mandibles (F), second maxilla (G), proximal endite of second maxilla (H), first maxilliped (I) and second maxilliped (J). K–O, Acanthephyridae (Acanthephyra quadrispinosa Kemp, 1939, AMK87 7277-D13) mandibles (K), second maxilla (L), proximal endite of second maxilla (M), first maxilliped (N) and second maxilliped (O). All scale bars:1 mm."figureDoi="http://doi.org/10.5281/zenodo.11240012"httpUri="https://zenodo.org/record/11240012/files/figure.png"pageId="11"pageNumber="347">Fig. 7A, F, K</figureCitation>
), we could not find any objective difference that could definitely be codified. The figures of mandibles in the paper by
<bibRefCitationid="EF814B3D2257B664FB68377DFAC4BA8D"author="Chace FA Jr."box="[1204,1351,1914,1938]"pageId="11"pageNumber="347"pagination="1 - 82"refId="ref10426"refString="Chace FA Jr. The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition 1907 - 1910, Part 4: Oplophoridae and Nematocarcinidae. Smithsonian Contributions to Zoology 1986; 432: 1 - 82."type="journal article"year="1986">Chace (1986)</bibRefCitation>
also do not show visible variations in the shape of the left molar process. We, therefore, do not include structure of the mandibles in the family diagnoses.
show a great variability of external characters including the rostrum, carapace, abdomen and pereopods. Diagnostic characters that are invariable within families are, therefore, few and linked only to mouthparts, on which we base the key below.
