479 lines
55 KiB
XML
479 lines
55 KiB
XML
<document id="CB081ED7434DE0B52CA6EC24ADE787E1" ID-CLB-Dataset="31812" ID-DOI="http://dx.doi.org/10.3897/zookeys.709.20181" ID-GBIF-Dataset="a66fe3fc-1d8a-4013-a0a8-7e081edccba5" ID-PMC="PMC5674165" ID-Pensoft-Pub="1313-2970-709-1" ID-PubMed="29118635" ID-ZooBank="FC4FADA8EDDD41CFAB6B2FE812BC8452" ModsDocAuthor="" ModsDocDate="2017" ModsDocID="1313-2970-709-1" ModsDocOrigin="ZooKeys 709" ModsDocTitle="A new species of Monstrillopsis (Crustacea, Copepoda, Monstrilloida) from the lower Northwest Passage of the Canadian Arctic" checkinTime="1508339153304" checkinUser="pensoft" docAuthor="Delaforge, Aurelie, Suarez-Morales, Eduardo, Walkusz, Wojciech, Karley Campbell, & Mundy, C. J." docDate="2017" docId="E3FA39C0F352A727502BD1FA07F4B3E3" docLanguage="en" docName="ZooKeys 709: 1-16" docOrigin="ZooKeys 709" docSource="http://dx.doi.org/10.3897/zookeys.709.20181" docTitle="Monstrillopsis planifrons Delaforge, Suarez-Morales, Walkusz, Campbell & Mundy, 2017, sp. n." docType="treatment" docUuid="F89104C6-A157-4598-8536-D2A2FE976B3F" docUuidSource="ZooBank" docVersion="7" lastPageNumber="6" masterDocId="517AFF98D548FFF5FF8F5B3CDD4B5618" masterDocTitle="A new species of Monstrillopsis (Crustacea, Copepoda, Monstrilloida) from the lower Northwest Passage of the Canadian Arctic" masterLastPageNumber="16" masterPageNumber="1" pageNumber="2" updateTime="1701385228939" updateUser="ExternalLinkService">
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<mods:mods id="1B82A8EC23A3B8D84258C3A4244FB273" xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo id="1D826071026715B8139A81605E7DB134">
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<mods:title id="119BDECBDDD39F1304E81EEC57FD90B8">A new species of Monstrillopsis (Crustacea, Copepoda, Monstrilloida) from the lower Northwest Passage of the Canadian Arctic</mods:title>
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<mods:namePart id="C5635E89859E3FECD783FBF93F07A792">Delaforge, Aurelie</mods:namePart>
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<mods:roleTerm id="212023F4EB4F4564A95B959C8075F191">Author</mods:roleTerm>
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<mods:namePart id="13C8945FE5F33CC7C0F9908A9283963D">Suarez-Morales, Eduardo</mods:namePart>
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<mods:roleTerm id="D286B824ED7CC34572D8DE8507244CF9">Author</mods:roleTerm>
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<mods:namePart id="CFB1F6F49688563230648B6FA1C68C6B">Walkusz, Wojciech</mods:namePart>
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<mods:namePart id="9F6A909562ADB81C41E2D1D374FA3478">Karley Campbell,</mods:namePart>
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<mods:namePart id="A1186FBA3010866AF82B2E6B1DFF2FA7">Mundy, C. J.</mods:namePart>
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<mods:title id="302924936E7ABE93A721DD9E224A375A">ZooKeys</mods:title>
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<mods:date id="F0A575CD277E0CD0C4DC9D1266FE42E2">2017</mods:date>
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<mods:detail id="6C86874795326C656596659EE1A683F5" type="volume">
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<mods:number id="4BC9CB909096EE3D0F6176AF7DCE634B">709</mods:number>
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<mods:url id="5E746F18FB5E80AC45A7827542B74EE5">http://dx.doi.org/10.3897/zookeys.709.20181</mods:url>
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<mods:classification id="A24C8D24094E3DD4218533E00F7FF112">journal article</mods:classification>
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<mods:identifier id="14499B02FCDB3597D9408A16F5DF262C" type="DOI">http://dx.doi.org/10.3897/zookeys.709.20181</mods:identifier>
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<mods:identifier id="25B939386C77561AAA568BC0BAF606F3" type="Pensoft-Pub">1313-2970-709-1</mods:identifier>
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<mods:identifier id="A2872F8FDC1346F32C80F1D91AA32C9A" type="ZooBank">FC4FADA8EDDD41CFAB6B2FE812BC8452</mods:identifier>
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<treatment id="E3FA39C0F352A727502BD1FA07F4B3E3" ID-GBIF-Taxon="135450487" LSID="urn:lsid:zoobank.org:act:F89104C6-A157-4598-8536-D2A2FE976B3F" httpUri="http://treatment.plazi.org/id/E3FA39C0F352A727502BD1FA07F4B3E3" lastPageId="5" lastPageNumber="6" pageId="1" pageNumber="2">
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<subSubSection id="2F2A3FD83E875FD00D92904E587C6720" pageId="1" pageNumber="2" type="nomenclature">
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<paragraph id="1D87F0014DE4D7AD727BD1D615658939" pageId="1" pageNumber="2">
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<taxonomicName id="4891182A3FFB74D51DCF2BEF27501037" ID-CoL="6S24T" LSID="http://zoobank.org/F89104C6-A157-4598-8536-D2A2FE976B3F" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis planifrons" order="Monstrilloida" pageId="1" pageNumber="2" phylum="Arthropoda" rank="species" species="planifrons">Monstrillopsis planifrons</taxonomicName>
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<taxonomicNameLabel id="B92F1FEE78611BB076903B0B7EE29D49" pageId="1" pageNumber="2">sp. n.</taxonomicNameLabel>
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Figs 2, 3, 4
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</paragraph>
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</subSubSection>
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<subSubSection id="EF920E223899AC3EB293922EFDF61976" pageId="1" pageNumber="2" type="materials_examined">
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<paragraph id="BCC483814A9C07331B3E485A9604021B" pageId="1" pageNumber="2">Material examined.</paragraph>
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<paragraph id="C82E6B60BFE16613214D843BD61912D0" pageId="1" pageNumber="2">
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Adult female holotype from Dease Strait (
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<geoCoordinate id="1A66B1F90569925FF41A2D121A2356CB" direction="north" orientation="latitude" precision="92" value="69.025">69°1.5'N</geoCoordinate>
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;
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<geoCoordinate id="766183E44BBAB8E6ADD4E444F540292C" direction="west" orientation="longitude" precision="92" value="-105.33667">105°20.2'W</geoCoordinate>
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), partially dissected. Selected appendages (legs 1-4) and cephalothorax and urosome on semi-permanent slides, mounted on glycerine. Date of collection: 02 June 2014. Plankton sampled underneath ice-covered water column. Slides deposited in the Collection of Zooplankton at El Colegio de la Frontera Sur (ECOSUR), in Chetumal, Mexico (ECO-CH-Z-09535).
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</paragraph>
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</subSubSection>
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<subSubSection id="C253B5699A08FE57535F9278C46B9815" lastPageId="2" lastPageNumber="3" pageId="1" pageNumber="2" type="description">
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<paragraph id="889C8EAF3EF678FA50367E56AD73C706" pageId="1" pageNumber="2">Description.</paragraph>
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<paragraph id="886D03B31FFD3DA3EFFE1EC26BC9D07A" pageId="1" pageNumber="2">
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Female. Body length of holotype specimen measured from anterior end of cephalosome to posterior margin of anal somite = 1.92 mm. Cephalothorax (incorporating first pedigerous somite) approximately 1.1 mm long, representing 58% of total body length (Fig. 2B). Oral papilla located at 20% of way back along ventral surface of cephalothorax. Pair of relatively large ocelli present, pigment cups moderately developed, medially conjoined, strongly pigmented; ventral cup larger than lateral cups (Fig. 2A). Cephalic area with conspicuous, protruding
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<normalizedToken id="2D2A66CA0FC41C252406366EC7AEB975" originalValue="“forehead”">"forehead"</normalizedToken>
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process with flat, coarse anterior margin ornamented with transversely arranged cuticular ridges at its base (Figs 2A, 3C). Protruding frontal process with pair of sensilla inserted at each side. Cephalic ventral ornamentation including: 1) a pair of small papilla-like structures between antennule bases (paired arrows in Fig. 3C), 2) preoral pair of nipple-like processes on anterior ventral surface; processes with adjacent wrinkles, rounded in shape; processes connected medially by transverse wrinkles (Fig. 3C). Cephalothorax covered with small papilla-like cuticular processes arranged randomly on ventral, lateral and dorsal surfaces (Figs 2B, 3B, C). Other ventral cuticular ornamentation including shallow striae on lateral and anterior surfaces of oral cone. Pedigerous somites 2-4 measuring 0.47 mm representing 24.7% of total body length; second pediger ornamented dorsally with three pairs of minute papilla-like processes on medial position (arrowed in Fig. 2B). Third pediger with pair of small sensilla on anterior half (Fig. 2B).
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</paragraph>
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<caption id="A0842B49DFEA18E3C88174187C3C264F" pageId="1" pageNumber="2">
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<paragraph id="A5F9DF6690123B3C35BEFD790D68D9A1" pageId="1" pageNumber="2">
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Figure 2.
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<taxonomicName id="A6EDF02EECA842D1652D36FDB4453849" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis planifrons" order="Monstrilloida" pageId="1" pageNumber="2" phylum="Arthropoda" rank="species" species="planifrons">Monstrillopsis planifrons</taxonomicName>
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sp. n., adult female holotype from the Canadian Arctic. A cephalic region, dorsal view B habitus, dorsal view, arrow shows three paired dorso-medial papilla-like processes on second pedigerous somite C urosome, ventral view, showing fifth legs, ovigerous spines not shown, only its insertion area D urosome, dorsal view E insertion of ovigerous spine on ventral surface of genital double-somite F terminal section of ovigerous spines G eggs along ovigerous spines. Scale bars: A, C, D 100
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<normalizedToken id="96BF4EF98E11486994E697AF454F371C" originalValue="µm">µm</normalizedToken>
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, B 500
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<normalizedToken id="FFBB8E9560B479601562BFA81BF0E0B0" originalValue="µm">µm</normalizedToken>
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,
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<normalizedToken id="C9C92D8E9591BD6A21C60985D57E697D" originalValue="E–G">E-G</normalizedToken>
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25
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<normalizedToken id="1EF7F4C965DDCE898D7FB9CB78233F58" originalValue="µm">µm</normalizedToken>
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.
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</paragraph>
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</caption>
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<paragraph id="78A8A056047AC5F4ED64F41DB9433A77" lastPageId="2" lastPageNumber="3" pageId="1" pageNumber="2">
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Urosome slender, consisting of fifth pedigerous somite, genital double-somite, and preanal and anal somites, together measuring 0.31 mm and representing 16% of total body length. Relative lengths of fifth pedigerous somite, genital double-somite, preanal and anal urosomites as: 31:38.2:14.1:16.7= 100, respectively (Fig. 2C, D). Genital somite longest of urosome, with pair of rounded expansions on posterolateral margins; surface smooth (Fig. 2C, D); somite with rounded ventral protuberance on anterior margin and with shallow suture on lateral surface (Fig. 3F). Ovigerous spines arising
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<pageBreakToken id="5CF0BF13D0E39EB9F6763BAD0E67AE78" pageId="2" pageNumber="3" start="start">ventrally</pageBreakToken>
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from proximal half of genital double-somite; spines paired, relatively short (0.62 mm), about 0.24% of total body length, posteriorly reaching distal margin of caudal setae (Fig. 2B). Spines basally separate, slender, straight at base and along shaft, both distally tapering into acute points; left spine slightly shorter (Fig. 2E, F). Specimen with a few eggs attached to ovigerous spines (Fig. 2G). Caudal ramus subrectangular, 1.9 times longer than wide, armed with four subequally long lightly setulated caudal setae (Fig. 2B).
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</paragraph>
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<paragraph id="6C92584C3065C9B1A91EB0A6B707C775" pageId="2" pageNumber="3">
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Antennules relatively long, slender, not straight but clearly divergent (Fig. 2B). Antennule length = 0.59 mm, representing about 31% of total body length and 51 % of cephalothorax length; antennule indistinctly 4-segmented, segments 3-4 partially fused. Relative length of segments, from base to top as: 12.1; 29.2; 17.1; 41.6. Last segment distally tapering (Fig. 3A). Antennulary armature in terms of pattern described by
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<bibRefCitation id="2BA7973390AAAF073C21E9648745C37E" author="Grygier, MJ" journalOrPublisher="Journal of Crustacean Biology" pageId="7" pageNumber="8" pagination="703 - 719" title="SEM observation of the nauplius of Monstrilla hamatapex, new species, from Japan and an example of upgraded descriptive standards for monstrilloid copepods." url="https://doi.org/10.1163/193724095X00118" volume="15" year="1995">Grygier and Ohtsuka (1995)</bibRefCitation>
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, including setae (Roman numerals), spines (Arabic numerals), and aesthetascs as: element 1 present on first segment, represented by relatively long, spiniform; elements on second segment: 2d1-2, 2v1-3 and long seta IId reaching slightly beyond distal end of antennule. Third segment with elements 3, IIId, and IIIv; element 3 remarkably long. Segment four bearing elements 4d1,2, 4v1-3, element 4v1 longest of group. Setae IVd, IVv, Vd, Vv, Vm, and 4aes present. Element 5 spiniform. Subterminal elements b1-5, branched; 6aes present. Apical elements 61 and 62 strong, spiniform; 61 twice as long as 62 (Fig. 3A). First segment of left antennule with an additional spine about half as long as element 1; supernumerary spine absent on right antennule.
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</paragraph>
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<caption id="E6CC468D8836BFADA97386CAC7317907" pageId="2" pageNumber="3">
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<paragraph id="D570FC574C6061B0ED1D1F0DB4FB8B0A" pageId="2" pageNumber="3">
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Figure 3.
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<taxonomicName id="AE9BBF07CCF2DB5D111DC0A12F502275" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis planifrons" order="Monstrilloida" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="planifrons">Monstrillopsis planifrons</taxonomicName>
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sp. n., adult female holotype from the Canadian Arctic. A right antennule showing armature following nomenclature by Grygier & Ohtsuka (1995), dorsal view B cephalic area showing forehead and perioral ornamentation, lateral view C cephalic area, showing cuticular processes and ornamentation, ventral view, arrow shows supernumerary spiniform element on first segment of left antennule D detail of first and second antennulary segments of left antennule showing supernumerary spiniform element on first segment (*) E fifth leg, ventral view showing small lobe-like processes on inner margin of exopodal (outer) lobes (arrowed) F urosome, showing fifth legs and ovigerous spines, lateral view. Scale bars: A 200
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<normalizedToken id="5182635954DFB4264B0DDB3FCF8DEDCA" originalValue="µm">µm</normalizedToken>
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,
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<normalizedToken id="C21EF91F6B4B421FA18A7C673E92D40D" originalValue="B–F">B-F</normalizedToken>
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100
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<normalizedToken id="8FD1604B78913902CBD35908FE1D2DA8" originalValue="µm">µm</normalizedToken>
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,
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<normalizedToken id="F024FD37E9298CE04699D5DD45167548" originalValue="D–E">D-E</normalizedToken>
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50
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<normalizedToken id="21156D3DA156FAFF9FA6B998FB431C6C" originalValue="µm">µm</normalizedToken>
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.
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</paragraph>
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</caption>
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<paragraph id="060E1A199C9DB6E9CC2B6C5417901B93" pageId="2" pageNumber="3">
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Incorporated first pedigerous somite and succeeding three free pedigerous somites each bearing a pair of biramous legs. Legs 1-4 slightly increasing in size posteriorly, leg 1 being shortest. Intercoxal sclerites of legs 1-4 subrectangular, widest transversely, with rounded margins, with surface and posterior margins smooth; sclerites with decreasing size, that of leg 1 being largest (Fig. 4
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<normalizedToken id="050A8D833CD47577E0085325AC12494C" originalValue="AE–H">AE-H</normalizedToken>
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). Basis of legs articulating with large, rectangular coxa along diagonal line. Basis of legs 1-4 with hair-like lateral seta (Fig. 4
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<normalizedToken id="C5B11370CBEEDBBF670EBC83DB323E7B" originalValue="A–D">A-D</normalizedToken>
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); on leg 3, this seta about 6 times longer and slightly thicker than those on the other legs (arrowed in Fig. 4C). Endopodites and exopodites of legs 1-4 triarticulated. Ramus setae all biserially plumose except spiniform outer seta on exopodal segments 1 and 3, and inner seta of first exopodal segment, these latter being short and sparsely setulated (Fig. 4
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<normalizedToken id="EDBDF6B3685ABBCC98F07CB0E90AC365" originalValue="A–D">A-D</normalizedToken>
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). Spine on exopodal segment 1 of legs 1-4 long, almost as long as segment, reaching distal margin of succeeding segment. Long apical exopodal setae of legs 1-4 with inner margin setulated, inner margin lightly spinulose.
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</paragraph>
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<paragraph id="AB708DC7E98C3C7C851A16297B9C6251" pageId="2" pageNumber="3">Armature formula of legs 1-4 as:</paragraph>
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<paragraph id="60BB013D7C21B7B80198BDF70CB82A42" pageId="2" pageNumber="3">Fifth legs medially conjoined, indistinctly bilobed, inner (endopodal) lobe incospicuous, represented by small inner protuberance (arrows in Fig. 3E). Outer lobe large, robust, with rounded margins; lobe armed with three subdistal setae. Innermost seta shortest, all fifth leg setae biserially and lightly setulated (Fig. 2C).</paragraph>
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<caption id="0DE32A007D24FF3223E1EAD247FB26E7" pageId="2" pageNumber="3">
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<paragraph id="D47CC2DF15211B133DE316863D62BD0D" pageId="2" pageNumber="3">
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Figure 4.
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<taxonomicName id="EC1AD1CCA9AE3ADDB8BA4515EFC77ADD" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis planifrons" order="Monstrilloida" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="planifrons">Monstrillopsis planifrons</taxonomicName>
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sp. n., adult female holotype from the Canadian Arctic. A first leg B second leg C third leg with longer basipodal seta D fourth leg
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<normalizedToken id="C92216B5F2BDCE6DB2FBBBD50C6BFAC8" originalValue="E–H">E-H</normalizedToken>
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. intercoxal sclerites of legs 1-4, respectively. Scale bars:
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<normalizedToken id="15B34A75879C97FE14780D0D4AE7DB7B" originalValue="A–D">A-D</normalizedToken>
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100
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<normalizedToken id="8B4BE7C50F1B09E4B4398D358ACCB686" originalValue="µm">µm</normalizedToken>
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,
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<normalizedToken id="A32D564C53C59692E7C4DDA716C270FA" originalValue="E–H">E-H</normalizedToken>
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50
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<normalizedToken id="B5677C6F2019D2C904DD890B7128F1EC" originalValue="µm">µm</normalizedToken>
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.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection id="7BC1E0D198BB9796E10527B226A03F10" pageId="2" pageNumber="3" type="etymology">
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<paragraph id="4A480BCC206951D6696BD61DF2EBBD5A" pageId="2" pageNumber="3">Etymology.</paragraph>
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<paragraph id="9D16D347AA45CA29D2C597AB6A456C1A" pageId="2" pageNumber="3">The specific epithet, derived from the Latin adjective planus (flat) and the noun frons (forehead), makes reference to the flat, protuberant frontal margin on the cephalic area, which is distinctive of this species.</paragraph>
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</subSubSection>
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<subSubSection id="034DF97D66700A0019EEC619C2659B93" lastPageId="5" lastPageNumber="6" pageId="2" pageNumber="3" type="remarks">
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<paragraph id="3176E4FE52BF3DD2560AB0386DA58718" pageId="2" pageNumber="3">Remarks.</paragraph>
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<paragraph id="6587C730D9A6F5893BA9861370A3CBBF" pageId="2" pageNumber="3">
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The Arctic species described herein is assigned to the genus
|
||
<taxonomicName id="1259995B3BD090B7E1D4DA24A518316B" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis" order="Monstrilloida" pageId="2" pageNumber="3" phylum="Arthropoda" rank="genus">Monstrillopsis</taxonomicName>
|
||
owing to its possession of the combination of characters noted by
|
||
<bibRefCitation id="0B074E9AB04AE2628C69F603283F73BF" author="Sars, GO" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" title="An account of the Crustacea of Norway with short descriptions and figures of all the species. Vol. VIII. CopepodaMonstrilloida and Notodelphyoida." year="1921">Sars (1921)</bibRefCitation>
|
||
in his diagnosis of this genus: 1) two free somites posterior to the genital double-somite, 2) eye fully developed, 3) four-segmented antennules in the female, 4) oral papilla occurring near the anteriormost part of the cephalothorax: <20% of way back along cephalothorax, 5) bilobed female fifth leg, outer lobe armed with three setae, 6) furcal rami with four setae. For the
|
||
<taxonomicName id="588D7157A3669E21D83BC5278A49CBF2" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis" order="Monstrilloida" pageId="2" pageNumber="3" phylum="Arthropoda" rank="genus">Monstrillopsis</taxonomicName>
|
||
genus, the number of female caudal setae is four, as in the present new species. However, males of some species can have more caudal setae (i.e.,
|
||
<taxonomicName id="E3499614FF20A2DF07307CF8A7028070" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis reticulata" order="Monstrilloida" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="reticulata">Monstrillopsis reticulata</taxonomicName>
|
||
(Davis, 1949),
|
||
<taxonomicName id="ACD3B7D85A7015EA71BBE9A70FFE2E0D" lsidName="M. zernowi" pageId="2" pageNumber="3" rank="species" species="zernowi">M. zernowi</taxonomicName>
|
||
Dolgopolskaya, 1948) (
|
||
<bibRefCitation id="97E87CB96263F654986AEDC10B00C08C" author="Suarez-Morales, E" journalOrPublisher="Zoologischer Anzeiger" pageId="8" pageNumber="9" pagination="95 - 107" title="A revision of the genus Monstrillopsis Sars (Crustacea: Copepoda: Monstrilloida) with description of a new species from Chile." url="https://doi.org/10.1016/j.jcz.2006.05.002" volume="245" year="2006">
|
||
<normalizedToken id="9DB2451F8D86C96C9926DD7EC2490388" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2006
|
||
</bibRefCitation>
|
||
), but except for the aberrant
|
||
<taxonomicName id="4500C48E4EAC8CF8203BF00CC936036A" lsidName="M. zernowi" pageId="2" pageNumber="3" rank="species" species="zernowi">M. zernowi</taxonomicName>
|
||
, with 5 caudal setae, the character is consistently present in the females.
|
||
</paragraph>
|
||
<paragraph id="609533BDD1548FB4AA4C31B97CC1E1B7" pageId="2" pageNumber="3">
|
||
<taxonomicName id="83F0177CA85E56C256F6BBD1A1E3AED9" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis planifrons" order="Monstrilloida" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="planifrons">Monstrillopsis planifrons</taxonomicName>
|
||
sp. n. differs in several respects from its known congeners. Most species of
|
||
<taxonomicName id="2435F39696B1D7FD5D8B7837C24E74B3" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis" order="Monstrilloida" pageId="2" pageNumber="3" phylum="Arthropoda" rank="genus">Monstrillopsis</taxonomicName>
|
||
of which females are known, like
|
||
<taxonomicName id="C901617BEC1476D8C73E660E96E465BC" lsidName="M. dubioides" pageId="2" pageNumber="3" rank="species" species="dubioides">M. dubioides</taxonomicName>
|
||
<normalizedToken id="BB90BC2EE8EBB73FF453B18C8E92581E" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
, 2004,
|
||
<taxonomicName id="513D10505724D4F8B85843643ECE3A95" lsidName="M. ferrarii" pageId="2" pageNumber="3" rank="species" species="ferrarii">M. ferrarii</taxonomicName>
|
||
<normalizedToken id="6FDE2735F7CB787EEA54A446B002277B" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
& Ivanenko, 2004, and
|
||
<taxonomicName id="1B848AE5EB18D13A6FE592ACA965D103" lsidName="M. chilensis" pageId="2" pageNumber="3" rank="species" species="chilensis">M. chilensis</taxonomicName>
|
||
, have affinities with
|
||
<taxonomicName id="4681B734B6190871F4E7B694D03D73A1" lsidName="M. dubia" pageId="2" pageNumber="3" rank="species" species="dubia">M. dubia</taxonomicName>
|
||
. This group of species share a relatively short cephalothorax (ca. 50-56% of total body length), four caudal setae, a well-defined digitiform inner lobe on the female fifth leg, an outer lobe armed with three long setae, antennule relatively short (30-35% of cephalothorax length) distinctly 4-segmented, and a relatively long genital double-somite (ca. 30% of urosome) with an expanded proximal half (
|
||
<bibRefCitation id="3D4ED9EE39333B6BFF3896C163E37082" author="Suarez-Morales, E" journalOrPublisher="Zoologischer Anzeiger" pageId="8" pageNumber="9" pagination="95 - 107" title="A revision of the genus Monstrillopsis Sars (Crustacea: Copepoda: Monstrilloida) with description of a new species from Chile." url="https://doi.org/10.1016/j.jcz.2006.05.002" volume="245" year="2006">
|
||
<normalizedToken id="E993FA02970F6774F43776741E83DCDD" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2006
|
||
</bibRefCitation>
|
||
,
|
||
<bibRefCitation id="B1BF2994A9BF689B7CDABE4C70C38B40" author="Suarez-Morales, E" journalOrPublisher="Contributions to Zoology" pageId="9" pageNumber="10" pagination="205 - 214" title="Monstrilloida (Crustacea: Copepoda) from the Beagle Channel, South America." volume="77" year="2008">2008</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="4618CEF3A3D2E8C0547359158D6B352D" pageId="2" pageNumber="3">
|
||
<taxonomicName id="83178E8163556AF458D6C83349704D6A" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis planifrons" order="Monstrilloida" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="planifrons">Monstrillopsis planifrons</taxonomicName>
|
||
sp. n. differs from this group of species in having relatively longer antennules (53% of total body length), which is one of the most striking characters of this species; this pattern is similar to that depicted by
|
||
<bibRefCitation id="1514AF93B3EEF786CC0EC0A11E314243" author="Dolgopolskaya, MA" journalOrPublisher="Trudy Zoologicheskogo Instituta Akademii Nauk SSSR" pageId="7" pageNumber="8" pagination="177 - 183" title="K faune Monstrillidae Chernogo morya." volume="7" year="1948">Dolgopolskaya (1948</bibRefCitation>
|
||
, fig. 3.1) for
|
||
<taxonomicName id="D49C774E39AA503F276697F08A93E657" lsidName="M. zernowi" pageId="2" pageNumber="3" rank="species" species="zernowi">M. zernowi</taxonomicName>
|
||
. This aberrant species also resembles the new species in having fused antennulary segments 3-4. The new species clearly diverges from
|
||
<taxonomicName id="BE6B0B60C68E05D574E6BD3A377ADFF6" lsidName="M. zernowi" pageId="2" pageNumber="3" rank="species" species="zernowi">M. zernowi</taxonomicName>
|
||
in the number of caudal setae: 5 vs. 4 in the new species. In addition, the fifth leg has a well-defined inner lobe (
|
||
<bibRefCitation id="F91FF69DC995ECC042E387334261A4C4" author="Dolgopolskaya, MA" journalOrPublisher="Trudy Zoologicheskogo Instituta Akademii Nauk SSSR" pageId="7" pageNumber="8" pagination="177 - 183" title="K faune Monstrillidae Chernogo morya." volume="7" year="1948">Dolgopolskaya 1948</bibRefCitation>
|
||
, fig. 3.5), thus diverging from the weakly developed inner process found in the new species. Also, in
|
||
<taxonomicName id="E1D303C5E3301EBD317CC2937C5A960C" lsidName="M. zernowi" pageId="2" pageNumber="3" rank="species" species="zernowi">M. zernowi</taxonomicName>
|
||
the frontal anterior margin of the cephalic region is depressed, with a medial protuberance (
|
||
<bibRefCitation id="A6B7288799A845CEB2BA0EF5986F0BDD" author="Dolgopolskaya, MA" journalOrPublisher="Trudy Zoologicheskogo Instituta Akademii Nauk SSSR" pageId="7" pageNumber="8" pagination="177 - 183" title="K faune Monstrillidae Chernogo morya." volume="7" year="1948">Dolgopolskaya 1948</bibRefCitation>
|
||
, fig. 3.2), thus differing from the produced, flat process that is present in
|
||
<taxonomicName id="99273320426E5857C79F6EBA94A05738" lsidName="M. planifrons" pageId="2" pageNumber="3" rank="species" species="planifrons">M. planifrons</taxonomicName>
|
||
sp. n. A relatively long antennule (47% of cephalothorax length) is also present in
|
||
<taxonomicName id="93879F82FA469D1B6CF1E4E3B6B7DB0F" lsidName="M. dubia" pageId="2" pageNumber="3" rank="species" species="dubia">M. dubia</taxonomicName>
|
||
(
|
||
<bibRefCitation id="DC373FB09F80A06F7CE5B6A5C1F2BD0A" author="Scott, T" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" url="https://doi.org/10.5962/bhl.title.53621" year="1904">Scott 1904</bibRefCitation>
|
||
, pl. XIII, fig. 14).
|
||
</paragraph>
|
||
<paragraph id="19C81A0D2CB141A461FC9DE3D658C608" lastPageId="4" lastPageNumber="5" pageId="2" pageNumber="3">
|
||
The antennule structure and armature are also a source of distinctive apomorphies of this new species. In several species of the genus the female antennulary segments 3-4 are clearly separate, as in
|
||
<taxonomicName id="8D2DC87C1809C0B377B7C306DDDECFDE" lsidName="M. dubia" pageId="2" pageNumber="3" rank="species" species="dubia">M. dubia</taxonomicName>
|
||
(
|
||
<bibRefCitation id="E248518B4EB33E5C5807C925DEA5CA55" author="Scott, T" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" url="https://doi.org/10.5962/bhl.title.53621" year="1904">Scott 1904</bibRefCitation>
|
||
, pl. XIII, fig. 14),
|
||
<taxonomicName id="3F85D143884A381714FF745B3174D0B9" lsidName="M. ferrarii" pageId="2" pageNumber="3" rank="species" species="ferrarii">M. ferrarii</taxonomicName>
|
||
(
|
||
<bibRefCitation id="C9A8818353DD1572383D1F69465C12A7" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="12BCA5E2FC28447826717C7CCB0B49AF" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, fig. 4B),
|
||
<taxonomicName id="9B92C50E816A37EF8CF99D62C02B95EB" lsidName="M. dubioides" pageId="2" pageNumber="3" rank="species" species="dubioides">M. dubioides</taxonomicName>
|
||
(
|
||
<bibRefCitation id="059B2EE33EC5BB8E9C03F23C34EC1A0F" author="Sars, GO" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" title="An account of the Crustacea of Norway with short descriptions and figures of all the species. Vol. VIII. CopepodaMonstrilloida and Notodelphyoida." year="1921">Sars 1921</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="7CA0F7C6BC3676428CAAE4BC6C50E99F" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="5FFF7C443979B3DDB6398F715CC088CA" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, fig. 9A),
|
||
<taxonomicName id="9D49516F8D120A043CCED9309547BBB8" lsidName="M. chilensis" pageId="2" pageNumber="3" rank="species" species="chilensis">M. chilensis</taxonomicName>
|
||
(
|
||
<bibRefCitation id="B79C81C81A1037A293E356E984707473" author="Suarez-Morales, E" journalOrPublisher="Zoologischer Anzeiger" pageId="8" pageNumber="9" pagination="95 - 107" title="A revision of the genus Monstrillopsis Sars (Crustacea: Copepoda: Monstrilloida) with description of a new species from Chile." url="https://doi.org/10.1016/j.jcz.2006.05.002" volume="245" year="2006">
|
||
<normalizedToken id="85B20EF25E0C964BB498D428A0DF9FFB" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2006
|
||
</bibRefCitation>
|
||
), and
|
||
<taxonomicName id="1D905D4D27785659A6E57209CCA29554" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis igniterra" order="Monstrilloida" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="igniterra">Monstrillopsis igniterra</taxonomicName>
|
||
(
|
||
<bibRefCitation id="9058D7272E321A68D281A5843496B0B3" author="Suarez-Morales, E" journalOrPublisher="Contributions to Zoology" pageId="9" pageNumber="10" pagination="205 - 214" title="Monstrilloida (Crustacea: Copepoda) from the Beagle Channel, South America." volume="77" year="2008">
|
||
<normalizedToken id="49C1BAAE066256F8981ED0551772C367" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2008
|
||
</bibRefCitation>
|
||
, fig. 2B). In the new species these segments
|
||
<pageBreakToken id="CE53E7136B0C5A7C317E9165401E482D" pageId="3" pageNumber="4" start="start">are</pageBreakToken>
|
||
partly fused (Fig. 3A). The general armature of the antennules is similar in all the species examined, but the new species has some distinctive details: 1) the apical elements 61 and 62 (sensu
|
||
<bibRefCitation id="87ECB7DD95B7428F5ED08EE3D48EB8F7" author="Grygier, MJ" journalOrPublisher="Journal of Crustacean Biology" pageId="7" pageNumber="8" pagination="703 - 719" title="SEM observation of the nauplius of Monstrilla hamatapex, new species, from Japan and an example of upgraded descriptive standards for monstrilloid copepods." url="https://doi.org/10.1163/193724095X00118" volume="15" year="1995">Grygier and Ohtsuka 1995</bibRefCitation>
|
||
) are clearly unequally long, the former is about twice as long as element 62 (Fig. 3A). In the other species these elements
|
||
<pageBreakToken id="144DFDE60F8F67E2C45999D0C8931363" pageId="4" pageNumber="5" start="start">are</pageBreakToken>
|
||
equally or subequally long (
|
||
<bibRefCitation id="6EC89EED06EC21F745AAA688378C1D9E" author="Scott, T" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" url="https://doi.org/10.5962/bhl.title.53621" year="1904">Scott 1904</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="0E6261A8BDD64255A32697B833694A41" author="Sars, GO" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" title="An account of the Crustacea of Norway with short descriptions and figures of all the species. Vol. VIII. CopepodaMonstrilloida and Notodelphyoida." year="1921">Sars 1921</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="EDCD0500145C992F28157A41FCCBC23F" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="5AF73EDE8E5828EE829F30291091B872" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="C8D4CBD4ABAF23D448ADB423B652FF24" author="Suarez-Morales, E" journalOrPublisher="Zoologischer Anzeiger" pageId="8" pageNumber="9" pagination="95 - 107" title="A revision of the genus Monstrillopsis Sars (Crustacea: Copepoda: Monstrilloida) with description of a new species from Chile." url="https://doi.org/10.1016/j.jcz.2006.05.002" volume="245" year="2006">
|
||
<normalizedToken id="FC868ACBE81692B874D76A4A3309B8BE" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2006
|
||
</bibRefCitation>
|
||
,
|
||
<bibRefCitation id="D444CA5636E901FD1512138AC81CB2A6" author="Suarez-Morales, E" journalOrPublisher="Contributions to Zoology" pageId="9" pageNumber="10" pagination="205 - 214" title="Monstrilloida (Crustacea: Copepoda) from the Beagle Channel, South America." volume="77" year="2008">2008</bibRefCitation>
|
||
); 2) the new species has a unique character on the left antennule, with a supernumerary spine on the first segment, a character that has not been observed in any other monstrilloid, probably reminiscent of an ancestral armature/fusion pattern of this segment which is known to have only a single element (
|
||
<bibRefCitation id="754181FBCE878EE4A644EAE2687DF88E" author="Grygier, MJ" journalOrPublisher="Journal of Crustacean Biology" pageId="7" pageNumber="8" pagination="703 - 719" title="SEM observation of the nauplius of Monstrilla hamatapex, new species, from Japan and an example of upgraded descriptive standards for monstrilloid copepods." url="https://doi.org/10.1163/193724095X00118" volume="15" year="1995">Grygier and Ohtsuka 1995</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="BD0E98FF5B9B3B3BEA09A708FEEC0FF1" pageId="4" pageNumber="5">
|
||
<taxonomicName id="AE52BA7B6FB104EA72C18C8A561B18C1" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis planifrons" order="Monstrilloida" pageId="4" pageNumber="5" phylum="Arthropoda" rank="species" species="planifrons">Monstrillopsis planifrons</taxonomicName>
|
||
sp. n. has a distinctive genital double-somite, with a pair of large lateral protuberances on the posterior half of the somite, visible on dorsal and ventral views (Fig. 2C, D). In its known congeners the anterior half of the genital double-somite is expanded, either strongly as in
|
||
<taxonomicName id="64F43BFD31F8ADE5F709E6D3161021E1" lsidName="M. igniterra" pageId="4" pageNumber="5" rank="species" species="igniterra">M. igniterra</taxonomicName>
|
||
(
|
||
<normalizedToken id="EB09A37D4FB587ECF60A7AC942414976" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2005, fig. 2D) and
|
||
<taxonomicName id="9073FD25272367284D4845DC5F00A454" lsidName="M. chilensis" pageId="4" pageNumber="5" rank="species" species="chilensis">M. chilensis</taxonomicName>
|
||
(
|
||
<bibRefCitation id="D77B502E105A3A1D5E1E28E561828BEA" author="Suarez-Morales, E" journalOrPublisher="Zoologischer Anzeiger" pageId="8" pageNumber="9" pagination="95 - 107" title="A revision of the genus Monstrillopsis Sars (Crustacea: Copepoda: Monstrilloida) with description of a new species from Chile." url="https://doi.org/10.1016/j.jcz.2006.05.002" volume="245" year="2006">
|
||
<normalizedToken id="BFF8EF2770962D811488A2435843C3F3" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2006
|
||
</bibRefCitation>
|
||
, fig. 4B) or weakly as in
|
||
<taxonomicName id="FE8C2D305AF2939CD0853DCF67323C11" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis filogranarum" order="Monstrilloida" pageId="4" pageNumber="5" phylum="Arthropoda" rank="species" species="filogranarum">Monstrillopsis filogranarum</taxonomicName>
|
||
(
|
||
<bibRefCitation id="EA137077F28290323E1873D1700F915C" pageId="4" pageNumber="5">Malaquin 1901</bibRefCitation>
|
||
, fig. 3),
|
||
<taxonomicName id="517E3BE096F35CC6BE65415E8135FB0D" lsidName="M. ferrarii" pageId="4" pageNumber="5" rank="species" species="ferrarii">M. ferrarii</taxonomicName>
|
||
and
|
||
<taxonomicName id="8EFEB1768E145F28FEB6C6A32DDCE0BF" lsidName="M. dubioides" pageId="4" pageNumber="5" rank="species" species="dubioides">M. dubioides</taxonomicName>
|
||
(
|
||
<bibRefCitation id="06839232F1E3C5A2AC1B0D9722BD9E67" author="Sars, GO" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" title="An account of the Crustacea of Norway with short descriptions and figures of all the species. Vol. VIII. CopepodaMonstrilloida and Notodelphyoida." year="1921">Sars 1921</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="FE26A9E95202A8A26D2DE0E49FEFB6EA" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="588B7321D16EA5FBE4355601090C8CB2" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, figs. 6A, 8C).
|
||
<taxonomicName id="C52B11D21A7E0AD51F2BA345619EEC5B" class="Copepoda" family="Monstrillidae" genus="Monstrillopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrillopsis dubia" order="Monstrilloida" pageId="4" pageNumber="5" phylum="Arthropoda" rank="species" species="dubia">Monstrillopsis dubia</taxonomicName>
|
||
(sensu
|
||
<bibRefCitation id="3D9BDD8272582D4D0DFFA076E40CEFA5" author="Scott, T" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" url="https://doi.org/10.5962/bhl.title.53621" year="1904">Scott 1904</bibRefCitation>
|
||
) has a short, robust genital double-somite (see
|
||
<bibRefCitation id="B74560720527FB432242FF2A1341F2F9" author="Scott, T" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" url="https://doi.org/10.5962/bhl.title.53621" year="1904">Scott 1904</bibRefCitation>
|
||
: Pl. XIV, fig. 18), expanded on its proximal half.
|
||
</paragraph>
|
||
<paragraph id="3AFFF4984488533DD4B49B63B03F9DEA" pageId="4" pageNumber="5">
|
||
Another distinctive character of the new species is its produced, flat corrugate forehead; this character is absent from all its known congeners, which have a simple, rounded forehead as in
|
||
<taxonomicName id="7D29935AE70CCAC43A24ADB7F65CB219" lsidName="M. dubia" pageId="4" pageNumber="5" rank="species" species="dubia">M. dubia</taxonomicName>
|
||
(Scott, 1904, pl. XII, fig. 14),
|
||
<taxonomicName id="5379E2296BB5C7CB6AB020CE95D3DCA6" lsidName="M. dubioides" pageId="4" pageNumber="5" rank="species" species="dubioides">M. dubioides</taxonomicName>
|
||
(
|
||
<bibRefCitation id="93CEDEB2CA17E423FA5DEB8961F3518F" author="Sars, GO" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" title="An account of the Crustacea of Norway with short descriptions and figures of all the species. Vol. VIII. CopepodaMonstrilloida and Notodelphyoida." year="1921">Sars 1921</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="E2313CE21BDF06581BA825AF42D4FA9D" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="051AD1849C08826FDFFDCE3F23FF35A0" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, fig. 9E),
|
||
<taxonomicName id="4B94E033CBD32D556FDAEDBD464F24B9" lsidName="M. chilensis" pageId="4" pageNumber="5" rank="species" species="chilensis">M. chilensis</taxonomicName>
|
||
(
|
||
<bibRefCitation id="BE0A70E957BC30CB7FFC68488B7F3F7C" author="Suarez-Morales, E" journalOrPublisher="Zoologischer Anzeiger" pageId="8" pageNumber="9" pagination="95 - 107" title="A revision of the genus Monstrillopsis Sars (Crustacea: Copepoda: Monstrilloida) with description of a new species from Chile." url="https://doi.org/10.1016/j.jcz.2006.05.002" volume="245" year="2006">
|
||
<normalizedToken id="85EA134B15B9B554D33BDF74089708B6" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2006
|
||
</bibRefCitation>
|
||
, fig. 3A, B),
|
||
<taxonomicName id="8494D3DAA040EE39EEA1F0F75A31E9A6" lsidName="M. igniterra" pageId="4" pageNumber="5" rank="species" species="igniterra">M. igniterra</taxonomicName>
|
||
(
|
||
<bibRefCitation id="73A817F8A8B7D2B122F879D9B26BF081" author="Suarez-Morales, E" journalOrPublisher="Contributions to Zoology" pageId="9" pageNumber="10" pagination="205 - 214" title="Monstrilloida (Crustacea: Copepoda) from the Beagle Channel, South America." volume="77" year="2008">
|
||
<normalizedToken id="1A728C135D87242E301A0BC1C348B7ED" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2008
|
||
</bibRefCitation>
|
||
, fig. 2D). In
|
||
<taxonomicName id="7B9DAD88FBC0750062BD529144F72E61" lsidName="M. ferrarii" pageId="4" pageNumber="5" rank="species" species="ferrarii">M. ferrarii</taxonomicName>
|
||
the forehead is anteriorly produced and coarsely corrugate (
|
||
<bibRefCitation id="DAB3B09EC832CC8380131DDDF9D163BD" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="280F64694506350CF7E1F96667972F89" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, fig. 3B), thus partially resembling that of the new species; however, the anterior margin is irregular in
|
||
<taxonomicName id="D3EC272457A6B9A0C4C246F908F415B1" lsidName="M. ferrarii" pageId="4" pageNumber="5" rank="species" species="ferrarii">M. ferrarii</taxonomicName>
|
||
and completely flat in
|
||
<taxonomicName id="EB16958088CA7EE3402FE95074CA5351" lsidName="M. planifrons" pageId="4" pageNumber="5" rank="species" species="planifrons">M. planifrons</taxonomicName>
|
||
sp. n. Also, in
|
||
<taxonomicName id="45F5761246656C3E0DB6AF28C0D8F6B4" lsidName="M. ferrarii" pageId="4" pageNumber="5" rank="species" species="ferrarii">M. ferrarii</taxonomicName>
|
||
the cephalic area has a pair of distinctive sculptured protuberances (
|
||
<bibRefCitation id="D221E96686DA06C80AEFB15DC71C090A" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="3D3297AF58E8F4D59A3FBB4F5C60C7AC" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, fig. 3B, D) that are absent in the new species.
|
||
</paragraph>
|
||
<paragraph id="5536A2792780DBFB9692F725323FC800" pageId="4" pageNumber="5">
|
||
Additional differences of the new species with respect to its congeners include a weakly developed fifth leg inner lobe, which is remarkably reduced to a small rounded inner protuberance (arrowed in Fig. 3E); all the known females of the genus have a conspicuous, well-developed inner lobe, reaching beyond the mid-length of the outer lobe as in
|
||
<taxonomicName id="48678672ED48D4209F8DDD550DAC37D9" lsidName="M. ferrarii" pageId="4" pageNumber="5" rank="species" species="ferrarii">M. ferrarii</taxonomicName>
|
||
(
|
||
<bibRefCitation id="DEA6F236C660D1E79FD368051B462A18" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="760072926E42B371707F98B98F5B524C" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, fig. 6D,E) and
|
||
<taxonomicName id="25BAC57567B8BE4E1AEC608E416202A7" lsidName="M. igniterra" pageId="4" pageNumber="5" rank="species" species="igniterra">M. igniterra</taxonomicName>
|
||
(
|
||
<bibRefCitation id="60F071CFBC107EF040B02128606AC250" author="Suarez-Morales, E" journalOrPublisher="Contributions to Zoology" pageId="9" pageNumber="10" pagination="205 - 214" title="Monstrilloida (Crustacea: Copepoda) from the Beagle Channel, South America." volume="77" year="2008">
|
||
<normalizedToken id="8762DF17498532BFB9B840E6C4C8C271" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2008
|
||
</bibRefCitation>
|
||
, fig. 2D), or slightly shorter, as in
|
||
<taxonomicName id="37B5651BC2D5062CEC07BF0036C15BFD" lsidName="M. dubia" pageId="4" pageNumber="5" rank="species" species="dubia">M. dubia</taxonomicName>
|
||
(
|
||
<bibRefCitation id="31F0724FF0C4139D62BB19DFBAFB977E" author="Scott, T" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" url="https://doi.org/10.5962/bhl.title.53621" year="1904">Scott 1904</bibRefCitation>
|
||
, pl. XIV, fig. 17),
|
||
<taxonomicName id="56544931BA0ED5EAF598B9D717FD9314" lsidName="M. chilensis" pageId="4" pageNumber="5" rank="species" species="chilensis">M. chilensis</taxonomicName>
|
||
(
|
||
<bibRefCitation id="03F6B08835161B4FAF21F0A33A559536" author="Suarez-Morales, E" journalOrPublisher="Zoologischer Anzeiger" pageId="8" pageNumber="9" pagination="95 - 107" title="A revision of the genus Monstrillopsis Sars (Crustacea: Copepoda: Monstrilloida) with description of a new species from Chile." url="https://doi.org/10.1016/j.jcz.2006.05.002" volume="245" year="2006">
|
||
<normalizedToken id="F5900B3B3427C5623CEC97E6785969CF" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2006
|
||
</bibRefCitation>
|
||
) and
|
||
<taxonomicName id="B9543D1DD9881B60F746DF3B07AA8EB2" lsidName="M. dubioides" pageId="4" pageNumber="5" rank="species" species="dubioides">M. dubioides</taxonomicName>
|
||
(
|
||
<bibRefCitation id="AB07BC4F1B461780BBEBFA5E05254F12" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="3B0937269607FA65F6208977044B09AD" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, fig. 8C). In
|
||
<taxonomicName id="8D78AB16276273518AE0E993B1FBE074" lsidName="M. filogranarum" pageId="4" pageNumber="5" rank="species" species="filogranarum">M. filogranarum</taxonomicName>
|
||
, described and depicted by
|
||
<bibRefCitation id="22189FC0107E5B04793C91A85AA703E9" pageId="4" pageNumber="5">Malaquin (1901</bibRefCitation>
|
||
, fig. 3), the inner lobe is present but it is weakly developed, thus resembling the pattern found in the new species. These species can be easily distinguished by differences in the length of the anal somite, which is twice as long as the preanal somite in
|
||
<taxonomicName id="C9C7936C0CEE54A961A45EC31E001803" lsidName="M. filogranarum" pageId="4" pageNumber="5" rank="species" species="filogranarum">M. filogranarum</taxonomicName>
|
||
(
|
||
<bibRefCitation id="D054C67AB60D2545DE93A602D3E6E116" pageId="4" pageNumber="5">Malaquin 1901</bibRefCitation>
|
||
, fig. 3) vs. equally long in the new species; in
|
||
<taxonomicName id="44C8C3C37FF97BBBC17A6F6DBEEB565C" lsidName="M. filogranarum" pageId="4" pageNumber="5" rank="species" species="filogranarum">M. filogranarum</taxonomicName>
|
||
the genital double-somite lacks expansions, thus diverging from the condition described in the new species.
|
||
</paragraph>
|
||
<paragraph id="0E5824E47AAAFD8BD8098B1FE4FD85B4" lastPageId="5" lastPageNumber="6" pageId="4" pageNumber="5">
|
||
In the new species the anal somite is about as long as the preceding urosomite; it shares this character with
|
||
<taxonomicName id="09C74E536C0695874234162DC54D210C" lsidName="M. ferrarii" pageId="4" pageNumber="5" rank="species" species="ferrarii">M. ferrarii</taxonomicName>
|
||
(
|
||
<bibRefCitation id="EB739F6973B34E347395081C9E56C5E0" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="E506B7F3E781B2AC73648EF603B5342B" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, fig. 6E) and
|
||
<taxonomicName id="EE15412A5B8E2AF3CAD076DFB0547573" lsidName="M. chilensis" pageId="4" pageNumber="5" rank="species" species="chilensis">M. chilensis</taxonomicName>
|
||
(
|
||
<bibRefCitation id="32EBB1B9766E3FF94E47A6C5ADE9ADF7" author="Suarez-Morales, E" journalOrPublisher="Zoologischer Anzeiger" pageId="8" pageNumber="9" pagination="95 - 107" title="A revision of the genus Monstrillopsis Sars (Crustacea: Copepoda: Monstrilloida) with description of a new species from Chile." url="https://doi.org/10.1016/j.jcz.2006.05.002" volume="245" year="2006">
|
||
<normalizedToken id="EA5A7C0D9133BD3CC6D0D5632508BACA" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2006
|
||
</bibRefCitation>
|
||
, fig. 2D) whereas in
|
||
<taxonomicName id="66439D6D6143CC0FCEB87DDC1F0F1C00" lsidName="M. dubia" pageId="4" pageNumber="5" rank="species" species="dubia">M. dubia</taxonomicName>
|
||
(
|
||
<bibRefCitation id="B13656097148D529418B42D2A07EC5D9" author="Scott, T" journalOrPublisher="The Bergen Museum, Bergen" pageId="8" pageNumber="9" url="https://doi.org/10.5962/bhl.title.53621" year="1904">Scott 1904</bibRefCitation>
|
||
,
|
||
<pageBreakToken id="9B678E94414D7B56CB01BF3BE1AD3B76" pageId="5" pageNumber="6" start="start">pl</pageBreakToken>
|
||
. XII, fig. 14, pl. XIV, fig. 18),
|
||
<taxonomicName id="B2DEE4D3E9CA4B2975293C606E93B1AD" lsidName="M. dubioides" pageId="5" pageNumber="6" rank="species" species="dubioides">M. dubioides</taxonomicName>
|
||
(
|
||
<bibRefCitation id="C05AE1ACDA8D58EA03AA960D4ABA2C26" author="Suarez-Morales, E" journalOrPublisher="Bulletin of Marine Science" pageId="8" pageNumber="9" url="http://dx.doi.org/10.14430/arctic481" year="2004">
|
||
<normalizedToken id="C1CB9E1E8E7C575D3277307DE1CB275E" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
and Ivanenko 2004
|
||
</bibRefCitation>
|
||
, fig. 8E), and
|
||
<taxonomicName id="3010E16298C7B7241D94AA7C37DC09EB" lsidName="M. igniterra" pageId="5" pageNumber="6" rank="species" species="igniterra">M. igniterra</taxonomicName>
|
||
(
|
||
<bibRefCitation id="A6F8BC9ACFD98DD880DF83A5C0648B34" author="Suarez-Morales, E" journalOrPublisher="Contributions to Zoology" pageId="9" pageNumber="10" pagination="205 - 214" title="Monstrilloida (Crustacea: Copepoda) from the Beagle Channel, South America." volume="77" year="2008">
|
||
<normalizedToken id="FCDBD392E7AE2D86F34A47F0D07D7C41" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
et al. 2008
|
||
</bibRefCitation>
|
||
, fig. 2D) the anal somite is longer than the preanal somite.
|
||
</paragraph>
|
||
<paragraph id="BA72B0135F3226A9C2A3754B229B9ACA" pageId="5" pageNumber="6">
|
||
Finally, the new species has the cephalothorax covered by small papilla-like structures; this kind of ornamentation has not been described in other species of the genus but it is known in several species of
|
||
<taxonomicName id="C962B36B64D48669EF62FC78F8AE3BF8" class="Copepoda" family="Monstrillidae" genus="Monstrilla" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Monstrilla" order="Monstrilloida" pageId="5" pageNumber="6" phylum="Arthropoda" rank="genus">Monstrilla</taxonomicName>
|
||
(i.e.,
|
||
<taxonomicName id="95629556714077554C36CECE8DB58DD6" lsidName="M. wandelii" pageId="5" pageNumber="6" rank="species" species="wandelii">M. wandelii</taxonomicName>
|
||
Stephensen, 1913;
|
||
<taxonomicName id="17EA09B0A4BF707A27324CCC04E43961" lsidName="M. elongata" pageId="5" pageNumber="6" rank="species" species="elongata">M. elongata</taxonomicName>
|
||
<normalizedToken id="6C0DC3B058EDBA26CFF1AB9585BBB8E5" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
, 2001;
|
||
<taxonomicName id="8255F735F7CD39E3CFEC8F6AA8D464E9" lsidName="M. pustulata" pageId="5" pageNumber="6" rank="species" species="pustulata">M. pustulata</taxonomicName>
|
||
<normalizedToken id="11929444BACC1F37509DBBC9398EDFB6" originalValue="Suárez-Morales">Suarez-Morales</normalizedToken>
|
||
& Dias, 2001). In light of these many differences, the erection of a new species for the specimen from the Canadian Arctic seems to be well justified.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="AE32A121133C33EAACE6CB897B9CC86B" pageId="5" pageNumber="6" type="habitat">
|
||
<paragraph id="47FC1CE9ECE766E2084A5907457D0E29" pageId="5" pageNumber="6">Habitat.</paragraph>
|
||
<paragraph id="22814E349103AA7348989A811FFC7627" pageId="5" pageNumber="6">
|
||
The oceanography of the lower Northwest Passage is distinctive due to its relatively lower salinity, resulting from the four large rivers draining into the waterway (
|
||
<bibRefCitation id="9ACBA78EC722ADE7FE6E485785633C88" author="Carmack, E" journalOrPublisher="Progress in Oceanography" pageId="7" pageNumber="8" pagination="90 - 104" title="Towards recognition of physical and geochemical change in Subarctic and Arctic Seas." url="https://doi.org/10.1016/j.pocean.2011.02.007" volume="90" year="2011">Carmack and McLaughlin 2011</bibRefCitation>
|
||
). The salinity of the water column varied between 28.4 and 28. 8, the temperature of the water column was ca. -1.5 °C on the day of sampling. The depth of the sampling station was of 63 m and the water column was still ice and snow covered. Moreover, the region of Dease Strait has limited water exchange with its neighbouring water bodies, thus suggesting there is an accumulation of freshwater not only from rivers but also from ice melt (
|
||
<bibRefCitation id="FBEED1481E77052848B058822F625AB0" pageId="5" pageNumber="6">McLaughlin et al. 2004</bibRefCitation>
|
||
,
|
||
<bibRefCitation id="4CBA0924E16E055B475019EBA761F02A" author="Campbell, K" journalOrPublisher="Progress in Oceanography" pageId="7" pageNumber="8" pagination="27 - 39" title="Community dynamics of bottom-ice algae in Dease Strait of the Canadian Arctic." url="https://doi.org/10.1016/j.pocean.2016.10.005" volume="149" year="2016">Campbell et al. 2016</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |