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<document id="62F3CDCAA6FB007D9BDD24E7A1FDC9C0" ID-CLB-Dataset="31057" ID-DOI="10.11646/zootaxa.4369.4.7" ID-GBIF-Dataset="0ff3b724-fbb2-458f-a55b-d28910952a66" ID-ISSN="1175-5326" ID-Zenodo-Dep="1136494" ID-ZooBank="CE0D1E89-B2CC-4871-ACE3-23C41343AA5C" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1515401419884" checkinUser="plazi" docAuthor="Komai, Tomoyuki &amp; Fujita, Yoshihisa" docDate="2018" docId="CD40D06FFFD47807658A5426FB51FBFF" docLanguage="en" docName="zootaxa.4369.4.7.pdf" docOrigin="Zootaxa 4369 (4)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Caligoneus Komai &amp; Fujita 2018, n. gen." docType="treatment" docUuid="3A7CF3B8-D79D-4A08-B603-00F1EE22A136" docUuidSource="ZooBank" docVersion="11" lastPageNumber="577" masterDocId="3179A817FFD57805651D5607FF83FFEF" masterDocTitle="A new genus and new species of alpheid shrimp from a marine cave in the Ryukyu Islands, Japan, with additional record of Salmoneus antricola Komai, Yamada &amp; Yunokawa, 2015 (Crustacea: Decapoda: Caridea)" masterLastPageNumber="586" masterPageNumber="575" pageNumber="576" updateTime="1698512995346" updateUser="ExternalLinkService">
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<mods:title id="C33599BA686DC758E088B0CB57E54344">A new genus and new species of alpheid shrimp from a marine cave in the Ryukyu Islands, Japan, with additional record of Salmoneus antricola Komai, Yamada &amp; Yunokawa, 2015 (Crustacea: Decapoda: Caridea)</mods:title>
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<mods:namePart id="11E600B139749DA737022FB90122E53C">Komai, Tomoyuki</mods:namePart>
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<mods:namePart id="41F78D4E9780E9CE13820AA2E41193EA">Fujita, Yoshihisa</mods:namePart>
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<mods:date id="7EAEA27985B000812F4CFDAED790FA34">2018</mods:date>
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<mods:number id="2ADDB3686EE7836006E80CC390E948B8">2018-01-08</mods:number>
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<treatment id="CD40D06FFFD47807658A5426FB51FBFF" ID-DOI="http://doi.org/10.5281/zenodo.5982860" ID-GBIF-Taxon="139669236" ID-Zenodo-Dep="5982860" LSID="urn:lsid:zoobank.org:act:3A7CF3B8-D79D-4A08-B603-00F1EE22A136" httpUri="http://treatment.plazi.org/id/CD40D06FFFD47807658A5426FB51FBFF" lastPageId="2" lastPageNumber="577" pageId="1" pageNumber="576">
<subSubSection id="0DF332F2FFD47804658A5426FD4FFDB2" pageId="1" pageNumber="576" type="nomenclature">
<paragraph id="45566179FFD47804658A5426FE53FDD4" blockId="1.[151,716,544,605]" box="[151,464,544,571]" pageId="1" pageNumber="576">
<heading id="1E1ED615FFD47804658A5426FE53FDD4" bold="true" box="[151,464,544,571]" fontSize="11" level="1" pageId="1" pageNumber="576" reason="1">
<emphasis id="779DBD6BFFD47804658A5426FE53FDD4" bold="true" box="[151,464,544,571]" pageId="1" pageNumber="576">
Genus
<taxonomicName id="82E91AFAFFD4780465F35427FEF4FDD5" ID-CoL="85GS8" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[238,375,544,570]" class="Malacostraca" family="Alpheidae" genus="Caligoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="576" phylum="Arthropoda" rank="genus" status="gen. nov.">
<emphasis id="779DBD6BFFD4780465F35427FEF4FDD5" bold="true" box="[238,375,544,570]" italics="true" pageId="1" pageNumber="576">Caligoneus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="6CAE0010FFD4780464635426FE53FDD4" box="[382,464,545,571]" pageId="1" pageNumber="576" rank="genus">n. gen.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="45566179FFD47804658A5442FD4FFDB2" blockId="1.[151,716,544,605]" box="[151,716,580,605]" pageId="1" pageNumber="576">[New Japanese name: Kurayami-teppou-ebi-zoku]</paragraph>
</subSubSection>
<subSubSection id="0DF332F2FFD47804658A548BFD09FD4A" box="[151,650,652,677]" pageId="1" pageNumber="576" type="materials_examined">
<paragraph id="45566179FFD47804658A548BFD09FD4A" blockId="1.[151,1437,652,2009]" box="[151,650,652,677]" pageId="1" pageNumber="576">
<emphasis id="779DBD6BFFD47804658A548BFEA8FD4A" bold="true" box="[151,299,652,677]" pageId="1" pageNumber="576">Type species</emphasis>
.
<taxonomicName id="82E91AFAFFD478046424548BFDC0FD4A" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[313,579,652,677]" class="Malacostraca" family="Alpheidae" genus="Caligoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="576" phylum="Arthropoda" rank="species" species="cavernicola" status="sp. nov.">
<emphasis id="779DBD6BFFD478046424548BFDC0FD4A" box="[313,579,652,677]" italics="true" pageId="1" pageNumber="576">Caligoneus cavernicola</emphasis>
</taxonomicName>
<taxonomicNameLabel id="6CAE0010FFD478046756548BFD09FD4A" box="[587,650,652,677]" pageId="1" pageNumber="576" rank="species">
<emphasis id="779DBD6BFFD478046756548BFD09FD4A" bold="true" box="[587,650,652,677]" pageId="1" pageNumber="576">n. sp.</emphasis>
</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="0DF332F2FFD4780465DA54A8FDDFF9C7" pageId="1" pageNumber="576" type="diagnosis">
<paragraph id="45566179FFD4780465DA54A8FA0FF9EB" blockId="1.[151,1437,652,2009]" pageId="1" pageNumber="576">
<emphasis id="779DBD6BFFD4780465DA54A8FEB9FD27" bold="true" box="[199,314,687,712]" pageId="1" pageNumber="576">Diagnosis</emphasis>
. Carapace with 1 or 2 mid-dorsal spines at postrostral position; frontal margin with extra-orbital spine on either side; rostrum well developed, triangular in dorsal view, elevated in dorsal mid-line, cross-section trigonal; pterygostomial angle somewhat produced anteriorly; cardiac notch small, shallow. Eyestalks fully exposed, dorsomesial angle slightly produced and pointed distally; cornea located distolaterally. Pleomeres 1 to 4 with pleura rounded, pleomere 5 with pleuron angular posteroventrally; pleomere 6 without articulated flap. Telson slender, with 2 pairs of dorsolateral spiniform setae; posterior margin bifurcate with very deep V-shaped cleft, each angle with 2 unequally long spiniform setae, mesial much longer than lateral; anal tubercle absent. Antennular peduncle with stylocerite terminating in small spine reaching distal margin of article 1; lateral flagellum with welldeveloped accessory ramus. Antenna with scaphocerite ovate, with broad distal blade reaching well beyond distolateral spine; carpocerite short, reaching mid-length of scaphocerite. Mouthparts typical for family; mandible with bi-articulated palp; maxillule with bilobed palp, both lobules furnished with apical setae. Maxilliped 2 exopod with long, stout plumose setae on lateral margin. Maxilliped 3 with coxal lateral plate rounded; ultimate article without robust spiniform setae on tip. Pereopods 1 (= chelipeds) short, symmetrical, both carried extended or loosely folded; ischium with at least 4 spiniform setae; carpus subcylindrical, widened distally; chela much shorter than carpus; occlusal margin of fixed finger with few minute teeth on proximal half; occlusal margin of dactylus unarmed. Pereopod 2 with ischium devoid of spiniform seta(e); carpus 5-articulated, first article longest, more than half-length of entire carpus. Pereopods 3–5 slender, increasing in length toward posterior, with flexible ischiomeral articulation; ischium with 0–2 spiniform setae (pereopod 3) or unarmed (pereopods 4 and 5); merus and carpus unarmed; propodus with widely spaced, small, slender spiniform setae; dactylus simple, slightly flattened. Pereopod 5 with propodal grooming apparatus consisting of row of short stiff setae evenly spaced. Pleopod 2 with appendix masculina and appendix interna, including ovigerous individuals. Uropod with slender exopod and endopod; diaeresis more or less sinuous. Gill/exopod formula: 5 pleurobranchs (above pereopods 1–5); 1 arthrobranch (maxilliped 3); no podobranch; 2 lobe-shaped epipods (maxillipeds 1 and 2) and 5 strap-like epipods (maxilliped 3, pereopods 1–4), 5 sets of setobranchs (pereopods 1–5); 3 flagellum-like exopods (maxilliped 1–3).
</paragraph>
<paragraph id="45566179FFD4780465DA5008FDDFF9C7" blockId="1.[151,1437,652,2009]" box="[199,604,1551,1576]" pageId="1" pageNumber="576">
<emphasis id="779DBD6BFFD4780465DA5008FEDCF9C7" bold="true" box="[199,351,1551,1576]" pageId="1" pageNumber="576">Composition</emphasis>
. Presently monotypic.
</paragraph>
</subSubSection>
<subSubSection id="0DF332F2FFD4780465DA5033FE93F97A" pageId="1" pageNumber="576" type="etymology">
<paragraph id="45566179FFD4780465DA5033FE93F97A" blockId="1.[151,1437,652,2009]" pageId="1" pageNumber="576">
<emphasis id="779DBD6BFFD4780465DA5033FEC5F9A2" bold="true" box="[199,326,1588,1613]" pageId="1" pageNumber="576">Etymology</emphasis>
. Name derived from the Latin adjective
<emphasis id="779DBD6BFFD47804665B5033FC15F9A2" box="[838,918,1588,1613]" italics="true" pageId="1" pageNumber="576">caligos</emphasis>
(= dark) and the second part (-
<emphasis id="779DBD6BFFD4780460365032FAEFF9A3" box="[1323,1388,1589,1612]" italics="true" pageId="1" pageNumber="576">oneus</emphasis>
) of
<taxonomicName id="82E91AFAFFD47804658A5050FE93F99F" authorityName="Holthuis" authorityYear="1955" box="[151,272,1623,1648]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="576" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD47804658A5050FE93F99F" box="[151,272,1623,1648]" italics="true" pageId="1" pageNumber="576">Salmoneus</emphasis>
</taxonomicName>
, a putatively closely related genus, in reference to the aphotic habitat of the new species. Gender masculine.
</paragraph>
</subSubSection>
<subSubSection id="0DF332F2FFD4780465DA5098FEBFF933" pageId="1" pageNumber="576" type="distribution">
<paragraph id="45566179FFD4780465DA5098FEBFF933" blockId="1.[151,1437,652,2009]" pageId="1" pageNumber="576">
<emphasis id="779DBD6BFFD4780465DA5098FEDAF957" bold="true" box="[199,345,1695,1720]" pageId="1" pageNumber="576">Distribution</emphasis>
. Presently known only from one marine cave off Ie
<collectingCountry id="3DFE21E9FFD4780466CF5098FB9AF957" box="[978,1049,1695,1720]" name="Iceland" pageId="1" pageNumber="576">Island</collectingCountry>
,
<collectingRegion id="872DAF9BFFD4780461345098FB0DF957" box="[1065,1166,1695,1720]" country="Japan" name="Okinawa" pageId="1" pageNumber="576">Okinawa</collectingRegion>
Islands in the Ryukyu Islands,
<collectingCountry id="3DFE21E9FFD4780465E950C2FEB4F933" box="[244,311,1733,1756]" name="Japan" pageId="1" pageNumber="576">Japan</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="0DF332F2FFD4780765DA50E0FB04FDD2" lastPageId="2" lastPageNumber="577" pageId="1" pageNumber="576" type="discussion">
<paragraph id="45566179FFD4780765DA50E0FC6EFF17" blockId="1.[151,1437,652,2009]" lastBlockId="2.[151,1437,151,1040]" lastPageId="2" lastPageNumber="577" pageId="1" pageNumber="576">
<emphasis id="779DBD6BFFD4780465DA50E0FEB7F8EF" bold="true" box="[199,308,1767,1792]" pageId="1" pageNumber="576">Remarks</emphasis>
. The
<typeStatus id="9A52DFDBFFD47804646850EEFE26F8EE" box="[373,421,1769,1793]" pageId="1" pageNumber="576">type</typeStatus>
species of the proposed new genus shares several taxonomically important morphological features with
<taxonomicName id="82E91AFAFFD478046423510BFE34F8CA" authorityName="Holthuis" authorityYear="1955" box="[318,439,1804,1829]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="576" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD478046423510BFE34F8CA" box="[318,439,1804,1829]" italics="true" pageId="1" pageNumber="576">Salmoneus</emphasis>
</taxonomicName>
, including the well-developed rostrum and extra-orbital spines, the absence of an articulated flap at the posteroventral angle of the pleomere 6, and, most significantly, the possession of an appendix masculina in ovigerous individuals. The gill formula also agrees well with that of
<taxonomicName id="82E91AFAFFD4780461565153FB47F882" authorityName="Holthuis" authorityYear="1955" box="[1099,1220,1876,1901]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="576" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD4780461565153FB47F882" box="[1099,1220,1876,1901]" italics="true" pageId="1" pageNumber="576">Salmoneus</emphasis>
</taxonomicName>
. In particular, it is similar to
<taxonomicName id="82E91AFAFFD4780464105170FD00F87F" authority="Anker, 2010" authorityName="Anker" authorityYear="2010" box="[269,643,1911,1936]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="576" phylum="Arthropoda" rank="species" species="armatus">
<emphasis id="779DBD6BFFD4780464105170FE6FF87F" box="[269,492,1911,1936]" italics="true" pageId="1" pageNumber="576">Salmoneus armatus</emphasis>
Anker,
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</taxonomicName>
in having a postrostral median spine on the carapace, representing a rather unusual feature within the
<taxonomicName id="82E91AFAFFD47804670D519BFD00F85A" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[528,643,1948,1973]" class="Malacostraca" family="Alpheidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="576" phylum="Arthropoda" rank="family">Alpheidae</taxonomicName>
(
<bibRefCitation id="21781C88FFD47804678E519BFCA9F85B" author="Anker" box="[659,810,1948,1973]" pageId="1" pageNumber="576" refString="Anker, A. (2010 a) The shrimp genus Salmoneus Holthuis, 1955 (Crustacea, Decapoda, Alpheidae) in the tropical western Atlantic, with description of five new species. Zootaxa, 2372, 177 - 205." type="journal article" year="2010" yearSuffix="a">Anker 2010a</bibRefCitation>
,
<bibRefCitation id="21781C88FFD47804662A519BFC02F85A" author="Anker" box="[823,897,1948,1973]" pageId="1" pageNumber="576" refString="Anker, A. (2010 b) A new genus and three new species of alpheid shrimps (Crustacea, Decapoda, Caridea) from the tropical American coasts. Zootaxa, 2652, 47 - 63." type="journal article" year="2010" yearSuffix="b">2010b</bibRefCitation>
). On the other hand,
<taxonomicName id="82E91AFAFFD47804616C519BFAFEF85A" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[1137,1405,1948,1973]" class="Malacostraca" family="Alpheidae" genus="Caligoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="576" phylum="Arthropoda" rank="species" species="cavernicola" status="sp. nov.">
<emphasis id="779DBD6BFFD47804616C519BFAFEF85A" box="[1137,1405,1948,1973]" italics="true" pageId="1" pageNumber="576">Caligoneus cavernicola</emphasis>
</taxonomicName>
<taxonomicNameLabel id="6CAE0010FFD478046098519BFF3BF836" pageId="1" pageNumber="576" rank="species">
<emphasis id="779DBD6BFFD478046098519BFF3BF836" bold="true" pageId="1" pageNumber="576">n. sp.</emphasis>
</taxonomicNameLabel>
has a few distinctive features (
<tableCitation id="086B54C2FFD47804670951C7FDEBF837" box="[532,616,1984,2009]" captionStart="TABLE 1" captionStartId="2.[151,244,1087,1112]" captionText="TABLE 1. Summary of characters differentiating among Caligoneus n. gen., Salmoneus Holthuis, 1955 and Triacanthoneus Anker,2010" pageId="1" pageNumber="576">Table 1</tableCitation>
), which are not present in any species of
<taxonomicName id="82E91AFAFFD47804612651C7FB37F836" authorityName="Holthuis" authorityYear="1955" box="[1083,1204,1984,2009]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="576" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD47804612651C7FB37F836" box="[1083,1204,1984,2009]" italics="true" pageId="1" pageNumber="576">Salmoneus</emphasis>
</taxonomicName>
, such as the rostrum being dorsally elevated and trigonal in cross-section (versus dorsoventrally flattened) and the subequal and symmetrical pereopods 1 (= chelipeds) of “minor form” (versus greatly dissimilar with an enlarged major cheliped showing various degree of modification according to species in
<taxonomicName id="82E91AFAFFD77807667E56D8FC5FFF17" authorityName="Holthuis" authorityYear="1955" box="[867,988,223,248]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD77807667E56D8FC5FFF17" box="[867,988,223,248]" italics="true" pageId="2" pageNumber="577">Salmoneus</emphasis>
</taxonomicName>
).
</paragraph>
<paragraph id="45566179FFD7780765DA5703FB04FDD2" blockId="2.[151,1437,151,1040]" pageId="2" pageNumber="577">
Furthermore,
<taxonomicName id="82E91AFAFFD7780764795703FDF2FEF2" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[356,625,260,285]" class="Malacostraca" family="Alpheidae" genus="Caligoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="species" species="cavernicola" status="sp. nov.">
<emphasis id="779DBD6BFFD7780764795703FDF2FEF2" box="[356,625,260,285]" italics="true" pageId="2" pageNumber="577">Caligoneus cavernicola</emphasis>
</taxonomicName>
<taxonomicNameLabel id="6CAE0010FFD7780767665703FD3FFEF2" box="[635,700,260,285]" pageId="2" pageNumber="577" rank="species">
<emphasis id="779DBD6BFFD7780767665703FD3FFEF2" bold="true" box="[635,700,260,285]" pageId="2" pageNumber="577">n. sp.</emphasis>
</taxonomicNameLabel>
has some features shared with particular species of
<taxonomicName id="82E91AFAFFD7780760015703FA16FEF2" authorityName="Holthuis" authorityYear="1955" box="[1308,1429,260,285]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD7780760015703FA16FEF2" box="[1308,1429,260,285]" italics="true" pageId="2" pageNumber="577">Salmoneus</emphasis>
</taxonomicName>
. The anteromesially pointed eyestalk as seen in
<taxonomicName id="82E91AFAFFD7780767AA572FFCDCFEAF" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[695,863,295,320]" class="Malacostraca" family="Alpheidae" genus="Caligoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="species" species="cavernicola" status="sp. nov.">
<emphasis id="779DBD6BFFD7780767AA572FFCDCFEAF" box="[695,863,295,320]" italics="true" pageId="2" pageNumber="577">C. cavernicola</emphasis>
</taxonomicName>
<taxonomicNameLabel id="6CAE0010FFD7780766755720FC2AFEAF" box="[872,937,295,320]" pageId="2" pageNumber="577" rank="species">
<emphasis id="779DBD6BFFD7780766755720FC2AFEAF" bold="true" box="[872,937,295,320]" pageId="2" pageNumber="577">n. sp.</emphasis>
</taxonomicNameLabel>
is rather unusual for
<taxonomicName id="82E91AFAFFD7780761B95720FA99FEAF" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[1188,1306,295,320]" class="Malacostraca" family="Alpheidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="family">Alpheidae</taxonomicName>
, being also found in some infaunal species of
<taxonomicName id="82E91AFAFFD778076729574BFD2EFE8A" authorityName="Holthuis" authorityYear="1955" box="[564,685,332,357]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD778076729574BFD2EFE8A" box="[564,685,332,357]" italics="true" pageId="2" pageNumber="577">Salmoneus</emphasis>
</taxonomicName>
(cf.
<bibRefCitation id="21781C88FFD7780767F1574BFC71FE8A" author="Anker" box="[748,1010,332,357]" pageId="2" pageNumber="577" refString="Anker, A. &amp; Marin, I. M. (2006) New records and species of Alpheidae (Crustacea, Decapoda) from Vietnam. Part I. Genus Salmoneus Holthuis, 1955. Raffles Bulletin of Zoology, 54, 295 - 319." type="journal article" year="2006">Anker &amp; Marin, 2006</bibRefCitation>
), as well as in
<taxonomicName id="82E91AFAFFD7780761B2574AFEBFFE67" authority="Kensley, 1988" authorityName="Kensley" authorityYear="1988" class="Malacostraca" family="Alpheidae" genus="Yagerocaris" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="species" species="cozumel">
<emphasis id="779DBD6BFFD7780761B2574AFA1FFE8A" box="[1199,1436,332,357]" italics="true" pageId="2" pageNumber="577">Yagerocaris cozumel</emphasis>
<bibRefCitation id="21781C88FFD77807658A5768FEBFFE67" author="Kensley" box="[151,316,367,392]" pageId="2" pageNumber="577" refString="Kensley, B. (1988) New species and records of cave shrimps from the Yucatan Peninsula (Decapoda: Agostocarididae and Hippolytidae). Journal of Crustacean Biology, 8, 688 - 699. https: // doi. org / 10.2307 / 1548704" type="journal article" year="1988">Kensley, 1988</bibRefCitation>
</taxonomicName>
, another marine cave dweller from Yucatan Peninsula, Mexico (
<bibRefCitation id="21781C88FFD7780761065768FB3EFE67" author="Kensley" box="[1051,1213,367,392]" pageId="2" pageNumber="577" refString="Kensley, B. (1988) New species and records of cave shrimps from the Yucatan Peninsula (Decapoda: Agostocarididae and Hippolytidae). Journal of Crustacean Biology, 8, 688 - 699. https: // doi. org / 10.2307 / 1548704" type="journal article" year="1988">Kensley 1988</bibRefCitation>
; Anker
<emphasis id="779DBD6BFFD7780760045776FAC8FE67" box="[1305,1355,367,392]" italics="true" pageId="2" pageNumber="577">et al</emphasis>
. 2006;
<bibRefCitation id="21781C88FFD77807658A5793FEA4FE43" author="Anker" box="[151,295,404,429]" pageId="2" pageNumber="577" refString="Anker, A. (2008) A worldwide review of stygobiotic and stygophilic shrimps of the family Alpheidae (Crustacea, Decapoda, Caridea). Subterranean Biology, 6, 1 - 16." type="journal article" year="2008">Anker 2008</bibRefCitation>
). The very deep median cleft on the posterior margin of the telson is also characteristic to
<taxonomicName id="82E91AFAFFD77807609F5793FE98FE3F" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" class="Malacostraca" family="Alpheidae" genus="Caligoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="species" species="cavernicola" status="sp. nov.">
<emphasis id="779DBD6BFFD77807609F5793FE98FE3F" italics="true" pageId="2" pageNumber="577">C. cavernicola</emphasis>
</taxonomicName>
<taxonomicNameLabel id="6CAE0010FFD77807643E57B0FEE0FE3F" box="[291,355,439,464]" pageId="2" pageNumber="577" rank="species">
<emphasis id="779DBD6BFFD77807643E57B0FEE0FE3F" bold="true" box="[291,355,439,464]" pageId="2" pageNumber="577">n. sp.</emphasis>
</taxonomicNameLabel>
, although a shallow notch or cleft is present in several species of
<taxonomicName id="82E91AFAFFD77807614B57B0FB4CFE3F" authorityName="Holthuis" authorityYear="1955" box="[1110,1231,439,464]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD77807614B57B0FB4CFE3F" box="[1110,1231,439,464]" italics="true" pageId="2" pageNumber="577">Salmoneus</emphasis>
</taxonomicName>
(e.g.,
<bibRefCitation id="21781C88FFD77807600457B0FA14FE3F" author="Miya" box="[1305,1431,439,464]" pageId="2" pageNumber="577" refString="Miya, Y. (1972) The Alpheidae (Crustacea, Decapoda) of Japan and its adjacent waters. Part. 1. Publications from the Amakusa Marine Biological Laboratory, Kyushu University, 3, 23 - 101." type="journal article" year="1972">Miya 1972</bibRefCitation>
;
<bibRefCitation id="21781C88FFD77807658A57DAFE21FE1B" author="Banner" box="[151,418,476,500]" pageId="2" pageNumber="577" refString="Banner, D. M. &amp; Banner, A. H. (1973) The alpheid shrimp of Australia. Part 1: Lower genera. Records of the Australian Museum, 28, 291 - 382. https: // doi. org / 10.3853 / j. 0067 - 1975.28.1973.407" type="journal article" year="1973">Banner &amp; Banner 1973</bibRefCitation>
;
<bibRefCitation id="21781C88FFD7780764B257DBFDBBFE1B" author="Anker" box="[431,568,476,501]" pageId="2" pageNumber="577" refString="Anker, A. (2007) New species and records of alpheid shrimps, genera Salmoneus Holthuis and Parabetaeus Coutiere, from the tropical western Atlantic (Decapoda, Caridea). Zootaxa, 1653, 21 - 39." type="journal article" year="2007">Anker 2007</bibRefCitation>
,
<bibRefCitation id="21781C88FFD77807675957DBFDFDFE1B" author="Anker" box="[580,638,476,500]" pageId="2" pageNumber="577" refString="Anker, A. (2011) Three new species of the alpheid shrimp genus Salmoneus Holthuis, 1955 (Crustacea, Decapoda) from the tropical western Pacific. Zootaxa, 2839, 67 - 84." type="journal article" year="2011">2011</bibRefCitation>
; Anker &amp; Marine 2006;
<bibRefCitation id="21781C88FFD77807668557DBFB16FE1B" author="Komai" box="[920,1173,476,501]" pageId="2" pageNumber="577" refString="Komai, T. &amp; Anker, A. (2012) A distinctive new species of the alpheid genus Salmoneus Holthuis, 1955 (Crustacea: Decapoda: Caridea) from the northwestern Pacific. Zootaxa, 3344, 60 - 68." type="journal article" year="2012">Komai &amp; Anker 2012</bibRefCitation>
). The flexible ischiummerus articulation of the pereopods 3–5 is also seen in
<taxonomicName id="82E91AFAFFD77807660C57F8FC79FDF7" authorityName="Komai, Yamada &amp; Yunokawa" authorityYear="2015" box="[785,1018,511,536]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="species" species="antricola">
<emphasis id="779DBD6BFFD77807660C57F8FC79FDF7" box="[785,1018,511,536]" italics="true" pageId="2" pageNumber="577">Salmoneus antricola</emphasis>
</taxonomicName>
(cf.
<bibRefCitation id="21781C88FFD77807612F57F8FA85FDF7" author="Komai" box="[1074,1286,511,536]" pageId="2" pageNumber="577" refString="Komai, T., Yamada, Y. &amp; Yunokawa, K. (2015) A new cave-dwelling species of the alpheid shrimp genus Salmoneus Holthuis, 1955 (Crustacea: Decapoda: Caridea) from the Ryukyu Islands, southern Japan. Zootaxa, 4028, 413 - 420. https: // doi. org / 10.11646 / zootaxa. 4028.3.6" type="journal article" year="2015">
Komai
<emphasis id="779DBD6BFFD77807619A5406FB3AFDF7" box="[1159,1209,511,536]" italics="true" pageId="2" pageNumber="577">et al</emphasis>
. 2015
</bibRefCitation>
), although in vast majority of species of
<taxonomicName id="82E91AFAFFD7780764D85423FDBDFDD2" authorityName="Holthuis" authorityYear="1955" box="[453,574,548,573]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD7780764D85423FDBDFDD2" box="[453,574,548,573]" italics="true" pageId="2" pageNumber="577">Salmoneus</emphasis>
</taxonomicName>
the articulation is not so flexible (cf.
<bibRefCitation id="21781C88FFD7780766FE5423FBF9FDD2" author="Anker" box="[995,1146,548,573]" pageId="2" pageNumber="577" refString="Anker, A. (2010 b) A new genus and three new species of alpheid shrimps (Crustacea, Decapoda, Caridea) from the tropical American coasts. Zootaxa, 2652, 47 - 63." type="journal article" year="2010" yearSuffix="b">Anker 2010b</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="0DF332F2FFD7780765DA5440FB51FBFF" pageId="2" pageNumber="577" type="reference_group">
<paragraph id="45566179FFD7780765DA5440FC4DFC6F" blockId="2.[151,1437,151,1040]" pageId="2" pageNumber="577">
<taxonomicName id="82E91AFAFFD7780765DA5440FEF6FD8F" ID-CoL="85JMG" authorityName="Anker" authorityYear="2010" box="[199,373,583,608]" class="Malacostraca" family="Alpheidae" genus="Triacanthoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD7780765DA5440FEF6FD8F" box="[199,373,583,608]" italics="true" pageId="2" pageNumber="577">Triacanthoneus</emphasis>
</taxonomicName>
is also similar to the new genus. According to
<bibRefCitation id="21781C88FFD7780766BC5440FBCFFD8F" author="Anker" box="[929,1100,583,608]" pageId="2" pageNumber="577" refString="Anker, A. (2010 b) A new genus and three new species of alpheid shrimps (Crustacea, Decapoda, Caridea) from the tropical American coasts. Zootaxa, 2652, 47 - 63." type="journal article" year="2010" yearSuffix="b">Anker (2010b)</bibRefCitation>
,
<taxonomicName id="82E91AFAFFD7780761465440FA8AFD8F" ID-CoL="85JMG" authorityName="Anker" authorityYear="2010" box="[1115,1289,583,608]" class="Malacostraca" family="Alpheidae" genus="Triacanthoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD7780761465440FA8AFD8F" box="[1115,1289,583,608]" italics="true" pageId="2" pageNumber="577">Triacanthoneus</emphasis>
</taxonomicName>
differs from
<taxonomicName id="82E91AFAFFD77807658A546BFE93FD6A" ID-CoL="84TDH" authorityName="Holthuis" authorityYear="1955" box="[151,272,620,645]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD77807658A546BFE93FD6A" box="[151,272,620,645]" italics="true" pageId="2" pageNumber="577">Salmoneus</emphasis>
</taxonomicName>
and all other alpheid genera by the presence of three conspicuous spines on the carapace (one middorsal spine, in post-gastric or cardiac position, and one pair of submedian spines, in post-hepatic position).
<taxonomicName id="82E91AFAFFD77807658A54B3FEC6FD22" ID-CoL="85JMG" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[151,325,692,717]" class="Malacostraca" family="Alpheidae" genus="Triacanthoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus" status="gen. nov.">
<emphasis id="779DBD6BFFD77807658A54B3FEC6FD22" box="[151,325,692,717]" italics="true" pageId="2" pageNumber="577">Triacanthoneus</emphasis>
</taxonomicName>
and
<taxonomicName id="82E91AFAFFD77807646654B3FE78FD22" ID-CoL="85GS8" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[379,507,692,717]" class="Malacostraca" family="Alpheidae" genus="Caligoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus" status="gen. nov.">
<emphasis id="779DBD6BFFD77807646654B3FE78FD22" box="[379,507,692,717]" italics="true" pageId="2" pageNumber="577">Caligoneus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="6CAE0010FFD77807671C54B3FDCCFD22" box="[513,591,692,717]" pageId="2" pageNumber="577" rank="genus">
<emphasis id="779DBD6BFFD77807671C54B3FDCCFD22" bold="true" box="[513,591,692,717]" pageId="2" pageNumber="577">n. gen.</emphasis>
</taxonomicNameLabel>
also share the flexible ischium-merus articulation of the pereopods 3–5 and the presence of appendix masculina in all individuals, this latter feature shared with
<taxonomicName id="82E91AFAFFD77807619854D0FB7DFD1F" ID-CoL="84TDH" authorityName="Holthuis" authorityYear="1955" box="[1157,1278,727,752]" class="Malacostraca" family="Alpheidae" genus="Salmoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD77807619854D0FB7DFD1F" box="[1157,1278,727,752]" italics="true" pageId="2" pageNumber="577">Salmoneus</emphasis>
</taxonomicName>
and possibly indicating some form of simultaneous hermaphroditism (cf.
<bibRefCitation id="21781C88FFD77807667454FBFB8BFCFA" author="Anker" box="[873,1032,764,789]" pageId="2" pageNumber="577" refString="Anker, A. (2010 b) A new genus and three new species of alpheid shrimps (Crustacea, Decapoda, Caridea) from the tropical American coasts. Zootaxa, 2652, 47 - 63." type="journal article" year="2010" yearSuffix="b">Anker 2010b</bibRefCitation>
). However,
<taxonomicName id="82E91AFAFFD77807618154FBFA9FFCFA" ID-CoL="85GS8" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[1180,1308,764,789]" class="Malacostraca" family="Alpheidae" genus="Caligoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus" status="gen. nov.">
<emphasis id="779DBD6BFFD77807618154FBFA9FFCFA" box="[1180,1308,764,789]" italics="true" pageId="2" pageNumber="577">Caligoneus</emphasis>
</taxonomicName>
is lacking submedian spines on the carapace and also differs from
<taxonomicName id="82E91AFAFFD77807663C5518FC4CFCD7" ID-CoL="85JMG" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[801,975,799,824]" class="Malacostraca" family="Alpheidae" genus="Triacanthoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD77807663C5518FC4CFCD7" box="[801,975,799,824]" italics="true" pageId="2" pageNumber="577">Triacanthoneus</emphasis>
</taxonomicName>
by several other characters, such as the presence of a deep median cleft on the telson. In species of
<taxonomicName id="82E91AFAFFD7780766325543FC5EFCB2" ID-CoL="85JMG" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[815,989,836,861]" class="Malacostraca" family="Alpheidae" genus="Triacanthoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="genus">
<emphasis id="779DBD6BFFD7780766325543FC5EFCB2" box="[815,989,836,861]" italics="true" pageId="2" pageNumber="577">Triacanthoneus</emphasis>
</taxonomicName>
, the posteromedian cleft of the telson is absent or shallow if present (cf.
<bibRefCitation id="21781C88FFD7780764E25560FD16FC6F" author="Anker" box="[511,661,871,896]" pageId="2" pageNumber="577" refString="Anker, A. (2010 b) A new genus and three new species of alpheid shrimps (Crustacea, Decapoda, Caridea) from the tropical American coasts. Zootaxa, 2652, 47 - 63." type="journal article" year="2010" yearSuffix="b">Anker 2010b</bibRefCitation>
;
<bibRefCitation id="21781C88FFD7780767BC5560FCF9FC6F" author="Alvarez" box="[673,890,871,896]" pageId="2" pageNumber="577" refString="Alvarez, F., Iliffe, T. M., Gonzalez, B. &amp; Villalobos, J. L. (2012) Triacanthoneus akumalensis, a new species of alpheid shrimp (Crustacea: Caridea: Alpheidae) from an anchialine cave in Quintana Roo, Mexico. Zootaxa, 3154, 61 - 68." type="journal article" year="2012">
Alvarez
<emphasis id="779DBD6BFFD77807661D556EFCB2FC6F" box="[768,817,871,896]" italics="true" pageId="2" pageNumber="577">et al</emphasis>
. 2012
</bibRefCitation>
,
<bibRefCitation id="21781C88FFD778076698556FFC41FC6F" author="Alvarez" box="[901,962,872,896]" pageId="2" pageNumber="577" refString="Alvarez, F., Iliffe, T. M. &amp; Villalobos, J. L. (2014) A new species of the alpheid shrimp genus Triacanthoneus Anker, 2010 (Crustacea: Alpheidae) from Belize. Zootaxa, 3768 (1), 88 - 94. https: // doi. org / 10.11646 / zootaxa. 3768.1.6" type="journal article" year="2014">2014</bibRefCitation>
).
</paragraph>
<paragraph id="45566179FFD7780765DA558AFB51FBFF" blockId="2.[151,1437,151,1040]" pageId="2" pageNumber="577">
It is interesting to note that
<taxonomicName id="82E91AFAFFD77807671C558BFC8EFC4A" ID-CoL="85NCH" authority="Komai &amp; Fujita, 2018" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[513,781,908,933]" class="Malacostraca" family="Alpheidae" genus="Caligoneus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="species" species="cavernicola" status="sp. nov.">
<emphasis id="779DBD6BFFD77807671C558BFC8EFC4A" box="[513,781,908,933]" italics="true" pageId="2" pageNumber="577">Caligoneus cavernicola</emphasis>
</taxonomicName>
<taxonomicNameLabel id="6CAE0010FFD778076608558BFCD7FC4A" box="[789,852,908,933]" pageId="2" pageNumber="577" rank="species">
<emphasis id="779DBD6BFFD778076608558BFCD7FC4A" bold="true" box="[789,852,908,933]" pageId="2" pageNumber="577">n. sp.</emphasis>
</taxonomicNameLabel>
has some apparently plesiomorphic features within
<taxonomicName id="82E91AFAFFD77807658A55A8FE8EFC27" ID-CoL="84JVC" authorityName="Komai &amp; Fujita" authorityYear="2018" box="[151,269,943,968]" class="Malacostraca" family="Alpheidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="577" phylum="Arthropoda" rank="family">Alpheidae</taxonomicName>
, such as the dorsally elevated rostrum, the fully exposed eyestalks and the symmetrical chelipeds of “minor form” with non-serrated dactyli (Anker
<emphasis id="779DBD6BFFD7780767B155D2FD5FFC02" box="[684,732,980,1005]" italics="true" pageId="2" pageNumber="577">et al</emphasis>
. 2006). Nevertheless, at present, it is unknown if the condition exhibited by the new taxon is really plesiomorphic or result of a secondary reduction or reversal.
</paragraph>
</subSubSection>
</treatment>
</document>
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