170 lines
18 KiB
XML
170 lines
18 KiB
XML
<document id="49DA8C430B555F27B263AEC7D0E4A67F" ID-CLB-Dataset="28114" ID-DOI="http://dx.doi.org/10.3897/zse.95.32548" ID-GBIF-Dataset="f1e888fc-3aa1-4ec0-9ac0-f279f1a7caa2" ID-Pensoft-Pub="1860-0743-1-125" ID-ZooBank="88A0413692DD4FA8B71944250012207D" ModsDocAuthor="" ModsDocDate="2019" ModsDocID="1860-0743-1-125" ModsDocOrigin="Zoosystematics and Evolution 1" ModsDocTitle="Chevreuxiopsisfranki gen. n., sp. n. (Crustacea, Amphipoda, Thoriellidae) from the deep sea southwest of Tasmania" checkinTime="1553557369520" checkinUser="pensoft" docAuthor="Halfter, Svenja & Oliver Coleman, Charles" docDate="2019" docId="7F045A929DEF475E8ADF625759C7456D" docLanguage="en" docName="ZoosystEvol 95(1): 125-132" docOrigin="Zoosystematics and Evolution 95 (1)" docSource="http://dx.doi.org/10.3897/zse.95.32548" docTitle="Chevreuxiopsis franki Halfter & Coleman, 2019, sp. n." docType="treatment" docUuid="A8EDC94F-9584-46B7-B33A-21F489AEE688" docUuidSource="ZooBank" docVersion="6" lastPageNumber="125" masterDocId="FFC4FFC5D3730977FFA7D177ED2CFFE4" masterDocTitle="Chevreuxiopsisfranki gen. n., sp. n. (Crustacea, Amphipoda, Thoriellidae) from the deep sea southwest of Tasmania" masterLastPageNumber="132" masterPageNumber="125" pageNumber="125" updateTime="1701376545737" updateUser="ExternalLinkService">
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<mods:titleInfo id="D1B2ABC54CA64C3C25F809524B0F4A85">
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<mods:title id="91BC0123E314746209C9C7B0421A1FF3">Chevreuxiopsisfranki gen. n., sp. n. (Crustacea, Amphipoda, Thoriellidae) from the deep sea southwest of Tasmania</mods:title>
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<mods:name id="B1232076C6EA5B97B52301170A7D9827" type="personal">
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<mods:roleTerm id="874A4309772B7A076B71DB5A1DCBD177">Author</mods:roleTerm>
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<mods:namePart id="6AA1003CCF0692FDC7138C630438E3F6">Halfter, Svenja</mods:namePart>
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<mods:name id="94DD0CAF18112080B0B1419E48C51089" type="personal">
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<mods:roleTerm id="DB5240069E63582845536B08D0B50D7C">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="63D8280A0CD1EF3F83E56520D192DD29">Oliver Coleman, Charles</mods:namePart>
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<mods:typeOfResource id="9E11E5BA11261B383CF8A0B53A94BA9B">text</mods:typeOfResource>
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<mods:title id="E2EBB9D33829F07AC38F8292FD67A7E1">Zoosystematics and Evolution</mods:title>
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<mods:part id="2CFA26CF8DA6D8DE1F42ADC360E13C95">
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<mods:date id="4250956FBE7FDDC8B391252AA2E1F665">2019</mods:date>
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<mods:detail id="24908B3F30D8FCC13C43B58723F68EF9" type="volume">
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<mods:number id="1C886E62CD4BDEB6F008C80B619A0FD5">95</mods:number>
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<mods:detail id="AFBF0757B52A9A341A0C7FA77FE9EF64" type="issue">
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<mods:number id="9C289395631C41D0B2B2EBD3C29280B0">1</mods:number>
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<mods:start id="6FF2D1961EBFD247BA7B15A7AE8E1F57">125</mods:start>
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<mods:url id="BDB2C9205CE792A3D91B07FB7D14C3DC">http://dx.doi.org/10.3897/zse.95.32548</mods:url>
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<mods:classification id="63762AED541678692CDEEF7F5411538E">journal article</mods:classification>
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<mods:identifier id="DE306F2B515D573FEAEB5033BF2E78AF" type="DOI">http://dx.doi.org/10.3897/zse.95.32548</mods:identifier>
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<mods:identifier id="D526CBA2C0E0748A033DA04B4BB0D6B3" type="Pensoft-Pub">1860-0743-1-125</mods:identifier>
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<mods:identifier id="F972A5297DCBCD53895D0AD4D7B2E686" type="ZooBank">88A0413692DD4FA8B71944250012207D</mods:identifier>
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</mods:mods>
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<treatment id="7F045A929DEF475E8ADF625759C7456D" ID-GBIF-Taxon="154494446" LSID="urn:lsid:zoobank.org:act:A8EDC94F-9584-46B7-B33A-21F489AEE688" httpUri="http://treatment.plazi.org/id/7F045A929DEF475E8ADF625759C7456D" lastPageNumber="125" pageId="0" pageNumber="125">
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<subSubSection id="1825D5559F6DCD165B0DC83557F67172" pageId="0" pageNumber="125" type="nomenclature">
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<paragraph id="7CF747E7F28C3C6B0F0E08036EF3C9E6" pageId="0" pageNumber="125">
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<taxonomicName id="A8E72AC990D9DB5893FCE03F106A4DF1" ID-CoL="7ZK4T" LSID="http://zoobank.org/A8EDC94F-9584-46B7-B33A-21F489AEE688" class="Malacostraca" family="Thoriellidae" genus="Chevreuxiopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chevreuxiopsis franki" order="Amphipoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="franki">Chevreuxiopsis franki</taxonomicName>
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<taxonomicNameLabel id="B56B688FD3A3A389C7BFC2EE976BCF8F" pageId="0" pageNumber="125">sp. n.</taxonomicNameLabel>
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Figures 1, 2, 3, 4, 5
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</paragraph>
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</subSubSection>
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<subSubSection id="7FE9748A146089BAF1DAE51034185488" pageId="0" pageNumber="125" type="materials_examined">
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<paragraph id="C4988E64975BF31A581ED746AC71D385" pageId="0" pageNumber="125">Material examined.</paragraph>
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<paragraph id="53F91F1D3E68088B5E782F4620D2A3CF" pageId="0" pageNumber="125">Holotype: female (the specimen appears to have unsetose oostegites), 12 mm.</paragraph>
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</subSubSection>
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<subSubSection id="1D8AA99ED0BA98CFEBA0972E80BB5029" pageId="0" pageNumber="125" type="type locality">
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<paragraph id="DC36ED1B0B8CB9F3C4D4B94BB560FD3B" pageId="0" pageNumber="125">Type locality.</paragraph>
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<paragraph id="00A0AB6F79E6D9EC8DE9DA48E1DD71AA" pageId="0" pageNumber="125">
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The specimen was collected with a McLane 21-cup sediment trap at 1,000 m depth between the 11 and 26 August 1998 at the Southern Ocean Time Series site (SOTS,
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<geoCoordinate id="252125BC4633916DA99D6D06E72DE985" direction="south" orientation="latitude" precision="9" value="-46.758667">46°45.52′S</geoCoordinate>
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,
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<geoCoordinate id="7AEF5F134E4054A100D5FB11A8F7BD15" direction="east" orientation="longitude" precision="9" value="142.08966">142°5.38′E</geoCoordinate>
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), southwest of Tasmania, Australia (ZMB Crust 31700).
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</paragraph>
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</subSubSection>
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<subSubSection id="201837114A66DBE27E99F9C290527990" pageId="0" pageNumber="125" type="etymology">
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<paragraph id="2AEC29D08480DFBEC7E59F92AD9848EA" pageId="0" pageNumber="125">Etymology.</paragraph>
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<paragraph id="905FBAAB131921D812DF5C7A60B4A383" pageId="0" pageNumber="125">The species is named for Frank Halfter, the father of the first author.</paragraph>
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</subSubSection>
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<subSubSection id="69986053304C731382A1B9DB32054CF0" pageId="0" pageNumber="125" type="diagnosis">
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<paragraph id="ED73453F9F2F97366C17602C81F63718" pageId="0" pageNumber="125">Diagnosis.</paragraph>
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<paragraph id="378F95ABE11F2BF6805B0259CC3D4238" pageId="0" pageNumber="125">As for generic diagnosis.</paragraph>
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</subSubSection>
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<subSubSection id="353799949A26A73183631F98689E4699" pageId="0" pageNumber="125" type="description">
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<paragraph id="D5187FA6116CA1644C0320AF56553D01" pageId="0" pageNumber="125">Description</paragraph>
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<paragraph id="D6D1FE1DFAC4E14F0A4595B0DF019ACE" pageId="0" pageNumber="125">(based on holotype, 12 mm).</paragraph>
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<paragraph id="D74E2E98F648DDD3111499281E2F36D0" pageId="0" pageNumber="125">Body (Fig. 1c). Head deeper than long, shorter than pereonite 1. Pereonite 2 slightly longer than 1. Pereonites 3 and 4 subequal in length. Pereonite 5 as long as pereonite 2. Pleonites subequal in length, posteroventrally rounded. Urosomite 1 longer than the fused urosomites 2 and 3. Telson absent.</paragraph>
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<paragraph id="770349E4730EAAFAA0399DC0BA784BCB" pageId="0" pageNumber="125">
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Head (Fig. 1c) with anterior rounded lobe between insertion of antenna 1 and 2. Eyes present, dark pigments visible in alcohol; weakly reniform, extended dorsoventrally. Antenna 1 (Fig. 1a, c) about 2
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<normalizedToken id="070654605D392EFE5CFB040D20AF1FBF" originalValue="×">x</normalizedToken>
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as long as antenna 2; peduncular article ratios 1: 0.4: 0.6, width successively smaller; 15 flagellum articles, slender, with very few slender setae. Antenna 2 (Figs 1b, 6) peduncle articles slender, with 2 minute basal articles (which were damaged during dissection), article 3 short; article 4 about 2
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<normalizedToken id="356F4F630B56027793814E4520DFB5F4" originalValue="×">x</normalizedToken>
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as long as article 3; article 5 as long as article 1-4 combined; flagellum article 1 distally expanded, about 3
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<normalizedToken id="40671E80C9A841359A07217A0534C972" originalValue="×">x</normalizedToken>
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as wide as basal articles, posterodistally lobate; article 2 and 3 proximally as wide as peduncular article 3 and posterodistally drawn out into long narrow lobes; article 4 lanceolate, distally pointed and inside with a dense mass of tissue. Mouthparts (Figs 1c, 2f) extended ventrally, all covered by large outer plates of maxilliped, which leave an anteriorly and ventrally slit-like opening and additionally surrounded posteriorly by wide bases of pereopods 1. Mandibles to maxilla 2 directed anteriorly; ventrally of these mouthparts is a dense tissue mass (dashed in Fig. 2f, 3a), that might represent the inner maxillipedal plates. Both mandibles slender without molar, setal rows or palp (Fig. 2a, b). Labrum without pronounced epistome, rounded from lateral view (Fig. 1d). Lower lip (Fig. 2e) with rather long rounded apices with few setae in the hypopharyngeal gap and with slender mandibular lobes. Maxilla 1 (Fig. 2c, d) inner plate with 2 plumose apical setae; outer plate with 6 plus 1 apical robust setae; palp 2-articulate, line between both articles barely visible, distal article lanceolate, with 1 short seta on tapering tip. Maxilla 2 (Fig. 2g) inner plate with some medial setae; outer plate with 4 distolateral plumose setae.
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</paragraph>
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<caption id="B6F028BDE1E8873E6BB22B5B5D2E6DB9" pageId="0" pageNumber="125">
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<paragraph id="E983AE7865457E00DD515098B5A186B5" pageId="0" pageNumber="125">
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Figure 1.
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<taxonomicName id="D44282AD6B18D42E4DC0CDD914F530A6" class="Malacostraca" family="Thoriellidae" genus="Chevreuxiopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chevreuxiopsis franki" order="Amphipoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="franki">Chevreuxiopsis franki</taxonomicName>
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gen. n., sp. n., holotype 12 mm. a Antenna 1 b Antenna 2, peduncular articles 1-2 missing c Habitus d Labrum and mandible, lateral view. Scale bars: 500
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<normalizedToken id="8D5890F176B5FAD4A9355920212882AC" originalValue="µm">µm</normalizedToken>
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(a, b); 1 mm (c); 100 m (d).
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</paragraph>
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</caption>
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<caption id="CA31333A127FDFA99AAA076E901B9607" pageId="0" pageNumber="125">
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<paragraph id="18ADED6D58285EBE0E2061DDCDFCAF34" pageId="0" pageNumber="125">
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Figure 2.
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<taxonomicName id="74C3EA44E5F3B0D42B5ACD1B10F69836" class="Malacostraca" family="Thoriellidae" genus="Chevreuxiopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chevreuxiopsis franki" order="Amphipoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="franki">Chevreuxiopsis franki</taxonomicName>
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gen. n., sp. n., holotype 12 mm. a Right mandible b Left mandible c, d Maxilla 1 e Lower lip f Mouthparts, left aspect g Maxilla 2. Scale bars: 100
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<normalizedToken id="DA7C0828512BF881A2977D80B18B912D" originalValue="µm">µm</normalizedToken>
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(
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<normalizedToken id="CD56835D005840CC4C0404F6057C859C" originalValue="a–e">a-e</normalizedToken>
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); 500
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<normalizedToken id="1FA39CF02B05D58EFA8F0CDD4AF92419" originalValue="µm">µm</normalizedToken>
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(f).
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</paragraph>
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</caption>
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<paragraph id="1A38150626CF4F5BC147537399D4A0BB" pageId="0" pageNumber="125">
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Pereon.Pereopod 1 (Fig. 3b) dark purple/black pigmented in ethanol; coxa subquadrate; basis anteromarginally expanded with short nose-shaped protrusion; ischium and merus subequal; carpus weakly expanded distally 2.2
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<normalizedToken id="3343A1F20C115D0D7AFB265F53BBC081" originalValue="×">x</normalizedToken>
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as long as wide; propodus slightly tapering distally with distal knob-like dactylus. Pereopod 2 (Fig. 3d, e) basis elongate and slender; ischium 2.7
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<normalizedToken id="8C69C1F6E927C30CAFBC1810625974F8" originalValue="×">x</normalizedToken>
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as long as wide; merus short, distally pointed; carpus longer than propodus with cushions of slender, hair-like setae on anterior and posterior margins; propodus anteromarginally rounded with similar setation as carpus; dactylus subapically, accompanied with long several long setulated setae and with few setae on the inner curvature. Pereopod 3 (Fig. 3c) coxa subrectangular, slightly directed anteriorly; basis as long as coxa; ischium 0.6
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<normalizedToken id="82AA03C8D97F7A0DEC478F0DB5F34B27" originalValue="×">x</normalizedToken>
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the width of basis; merus relatively short, distally expanded; carpus wider than long, distally expanded; carpus curved posteriorly, distally oblique; dactylus with proximal rounded joint, weakly curved, slender; propodus and dactylus form subchelate complex. Pereopod 4 (Fig. 4a) coxa largest, about 4
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<normalizedToken id="85D1242209BCD1C50AB98482A1746D29" originalValue="×">x</normalizedToken>
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as long as coxa 1, surpassing basis, ischium and part of merus, anteriorly convex, posteriorly straight; basis to dactylus subequal to pereopod 3, except for the slightly longer carpus. Pereopod 5 (Fig. 4b) coxa bilobed; basis to merus subequal to pereopod 4; carpus shorter than wide, with anterior process; propodus curved anteriorly with oblique distal margin; carpus and long, slender, weakly curved dactylus form a very large subchela.
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</paragraph>
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<caption id="760B0A2E9133D7988E552BBA6E9EF522" pageId="0" pageNumber="125">
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<paragraph id="5A632B7FBBDBAA052968548637708F61" pageId="0" pageNumber="125">
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Figure 3.
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<taxonomicName id="60664DA07A30EBBC73C4C3E3719A616A" class="Malacostraca" family="Thoriellidae" genus="Chevreuxiopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chevreuxiopsis franki" order="Amphipoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="franki">Chevreuxiopsis franki</taxonomicName>
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gen. n., sp. n., holotype 12 mm. a Maxilliped, opened up b Pereopod 1, basis to dactylus; detail shows knob-like dactylus c Pereopod 3 d Pereopod 2, without coxa e Dactylus of pereopod 2. Scale bar: 500
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<normalizedToken id="9398C34FE9D717CC78D55CAD3B6FB334" originalValue="µm">µm</normalizedToken>
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(
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<normalizedToken id="BB2986C5F2227776B94F044CF38922EB" originalValue="a–d">a-d</normalizedToken>
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).
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</paragraph>
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</caption>
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<caption id="1F6531C570AD6E80449CE0AD018BA610" pageId="0" pageNumber="125">
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<paragraph id="893DC4E1BFE16EF68DE9772A2AD2A543" pageId="0" pageNumber="125">
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Figure 4.
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<taxonomicName id="27EB58509D705C33E44997FE9775571E" class="Malacostraca" family="Thoriellidae" genus="Chevreuxiopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chevreuxiopsis franki" order="Amphipoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="franki">Chevreuxiopsis franki</taxonomicName>
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gen. n., sp. n., holotype 12 mm. a Pereopod 4 b Pereopod 5 c Pereopod 7, medial aspect. Scale bar: 500
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<normalizedToken id="CB7813B6EC60CDE6166F918C9A773570" originalValue="µm">µm</normalizedToken>
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(
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<normalizedToken id="896D0789EDEAE758830C2D5EA992F922" originalValue="a–c">a-c</normalizedToken>
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).
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</paragraph>
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</caption>
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<paragraph id="DD316E3FBD422B4955A2EC2DFACBAE99" pageId="0" pageNumber="125">Pereopod 6 (Fig. 5a, d) coxa wide, weakly bilobate, posterior lobe slightly longer than anterior one; basis about half as long as coxa width; ischium longer than wide; merus expanded posterodistally; carpus short, distally expanded, with some small teeth anteromarginally; propodus, relatively slender, convex posteromarginally, anteromarginally straight, with marginal small teeth, especially on the medial face; dactylus falcate.</paragraph>
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<paragraph id="1DB51CF6050AC1F9D41EA6D6AB5C65A1" pageId="0" pageNumber="125">Pereopod 7 (Fig. 4c) coxa shorter than wide, subrectangular; basis posteroproximally weakly expanded, somewhat tapering distally; ischium subquadrate; merus weakly expanded posterodistally; carpus subquadrate; propodus convex posteromarginally, straight anteromarginally; dactylus much shorter than preceding appendages.</paragraph>
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<paragraph id="1C7859C52F9422CDB6054D19E1AC481D" pageId="0" pageNumber="125">
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Pleon.Pleopod 1 (Fig. 5b, c) peduncle 2
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<normalizedToken id="0AEA53586FEFDA98E6D34A48D7016410" originalValue="×">x</normalizedToken>
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as long as wide; coupling hooks (Fig. 5c) long with rows of protrusions ventrally; both rami slightly longer than peduncle, inner ramus somewhat shorter than outer ramus; swimming setae moderately long with dense setulation (Fig. 5f).
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</paragraph>
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<caption id="DD422D711897867BDC30B34C8FA4C3A9" pageId="0" pageNumber="125">
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<paragraph id="8E6B1DEDE53FCEA36765998A14F3217B" pageId="0" pageNumber="125">
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Figure 5.
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<taxonomicName id="3A69AADB4BFB035F9D30158964CC2CEB" class="Malacostraca" family="Thoriellidae" genus="Chevreuxiopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Chevreuxiopsis franki" order="Amphipoda" pageId="0" pageNumber="125" phylum="Arthropoda" rank="species" species="franki">Chevreuxiopsis franki</taxonomicName>
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gen. n., sp. n., holotype 12 mm. a Pereopod 6 b Pleopod 1; c Coupling hooks of pleopod d Anterior margin of propodus e Urosome, dorsal view f Setulated seta of pleopod. Scale bar: 500
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<normalizedToken id="139A9F5532C877AE52E56DAA43736C25" originalValue="µm">µm</normalizedToken>
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(a, b, e).
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</paragraph>
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</caption>
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<paragraph id="C9EA07B8F1F5FD03E468F59E344F12AE" pageId="0" pageNumber="125">
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Urosome. First urosomite longer than the fused second and third segment; urosomite 2 expanded midlaterally and weakly incised posteromarginally forming 2 short rounded lobes; peduncle of uropod 1 2.5
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<normalizedToken id="909E9B26D95CFEC9DBCE1074CE70B9FF" originalValue="×">x</normalizedToken>
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as long as wide; outer ramus lanceolate; inner ramus spine-like, 25% of outer ramus length; uropod 2 peduncle shorter than that of uropod 1 and weakly expanded distally; outer ramus slightly wider compared to that of uropod 1; inner ramus 23% of outer ramus. Telson absent.
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</paragraph>
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</subSubSection>
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<subSubSection id="B57D3446440D3F9A03E84136C0D11FE2" pageId="0" pageNumber="125" type="distribution">
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<paragraph id="6CD0BFCF8BE5B25B124C88C492FDB68D" pageId="0" pageNumber="125">Distribution.</paragraph>
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<paragraph id="E857766FE5BF21E05820DA70317EB4FD" pageId="0" pageNumber="125">The species is so far only known from the type locality.</paragraph>
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</subSubSection>
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</treatment>
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</document> |