228 lines
24 KiB
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228 lines
24 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.779.24781" ID-GBIF-Dataset="7bc96057-3172-43c0-9cbf-520bd4554d22" ID-PMC="PMC6085401" ID-Pensoft-Pub="1313-2970--89" ID-PubMed="30108430" ID-ZBK="7ED3734C37F74ABF89B6A12A2A56B216" ModsDocAuthor="" ModsDocDate="2018" ModsDocID="1313-2970--89" ModsDocOrigin="ZooKeys " ModsDocTitle="Phylogeny of hydrothermal vent Iphionidae, with the description of a new species (Aphroditiformia, Annelida)" checkinTime="1555316884094" checkinUser="pensoft" docAuthor="McCowin, Marina F. & Rouse, Greg W." docDate="2018" docId="A91D004E6F5E6377E93BAB2DBAFF5EA5" docLanguage="en" docName="ZooKeys 779: 89-107" docOrigin="ZooKeys 779" docSource="http://dx.doi.org/10.3897/zookeys.779.24781" docTitle="Thermiphione rapanui McCowin & Rouse, 2018, sp. n." docType="treatment" docUuid="D201192A-0569-4C3E-8B22-4C3C3C6A27D7" docUuidSource="ZooBank" docVersion="5" lastPageNumber="96" masterDocId="FFC41255FF9AFFB0FFF3437AFFB91F7F" masterDocTitle="Phylogeny of hydrothermal vent Iphionidae, with the description of a new species (Aphroditiformia, Annelida)" masterLastPageNumber="107" masterPageNumber="89" pageNumber="94" updateTime="1668166131383" updateUser="ExternalLinkService">
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<mods:titleInfo>
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<mods:title>Phylogeny of hydrothermal vent Iphionidae, with the description of a new species (Aphroditiformia, Annelida)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>McCowin, Marina F.</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Rouse, Greg W.</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2018</mods:date>
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<mods:detail type="volume">
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<mods:number>779</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>89</mods:start>
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<mods:end>107</mods:end>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.779.24781</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.779.24781</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970--89</mods:identifier>
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<mods:identifier type="ZBK">7ED3734C37F74ABF89B6A12A2A56B216</mods:identifier>
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<mods:identifier type="ZooBank">7ED3734C37F74ABF89B6A12A2A56B216</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="156199850" LSID="urn:lsid:zoobank.org:act:D201192A-0569-4C3E-8B22-4C3C3C6A27D7" httpUri="http://treatment.plazi.org/id/A91D004E6F5E6377E93BAB2DBAFF5EA5" lastPageId="7" lastPageNumber="96" pageId="5" pageNumber="94">
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<subSubSection pageId="5" pageNumber="94" type="nomenclature">
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<paragraph pageId="5" pageNumber="94">
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<taxonomicName LSID="http://zoobank.org/D201192A-0569-4C3E-8B22-4C3C3C6A27D7" class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="5" pageNumber="94" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
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<taxonomicNameLabel pageId="5" pageNumber="94">sp. n.</taxonomicNameLabel>
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Figures 6, 7, 8, 9
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</paragraph>
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</subSubSection>
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<subSubSection pageId="5" pageNumber="94" type="type-locality">
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<paragraph pageId="5" pageNumber="94">Type-locality.</paragraph>
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<paragraph pageId="5" pageNumber="94">
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German Flats, hydrothermal vents of Pacific Antarctic Ridge,
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<geoCoordinate direction="west" orientation="longitude" precision="925" value="-110.916664">110°55'W</geoCoordinate>
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,
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<geoCoordinate direction="south" orientation="latitude" precision="925" value="-37.8">37°48'S</geoCoordinate>
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.
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</paragraph>
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<paragraph pageId="5" pageNumber="94">
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Material Examined.Type specimens. Holotype (SIO-BIC A8557) from German Flats, hydrothermal vents of Pacific Antarctic Ridge, (type locality above), HOV
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<taxonomicName genus="Alvin" lsidName="Alvin" pageId="5" pageNumber="94" rank="genus">Alvin</taxonomicName>
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Dive 4088, 2216m depth, 22 March 2005; fixed in 10% SW formalin, preserved in 50% ethanol. The holotype was not sequenced directly to avoid damage but was morphologically identical to sequenced specimens from the same locality. Post-preservation, holotype 10 mm long, 8.5 mm wide including parapodia, 31 segments. Paratypes: 1 specimen (SIO-BIC A7969) fixed and preserved in 95% ethanol, same location as holotype, post-preservation 9 mm long, 7 mm wide, 29 segments; 1 specimen (SIO-BIC A7970) from same location as holotype: anterior of specimen (approximately 14 segments) fixed in 10% SW formalin and preserved in 50% ethanol and posterior (approximately 14 segments) fixed and preserved in 95% ethanol; 2 specimens (SIO-BIC A7971, juvenile; SIO-BIC A7972) from the western flank of the Easter Microplate, East Pacific Rise, 115°34'W, 23°32'S, HOV
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<taxonomicName genus="Alvin" lsidName="Alvin" pageId="5" pageNumber="94" rank="genus">Alvin</taxonomicName>
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Dive 4096, 2595m depth, 6 April 2005. SIO-BIC A7971 fixed and preserved in 95% ethanol, post-preservation 7 mm long, 4 mm wide, 19 segments; SIO-BIC A7972: anterior of specimen (approximately 20 segments) fixed in 10% SW formalin and preserved in 50% ethanol and posterior (approximately 9 segments) fixed and preserved in 95% ethanol.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="5" pageNumber="94" type="diagnosis">
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<paragraph pageId="5" pageNumber="94">Diagnosis.</paragraph>
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<paragraph pageId="5" pageNumber="94">Ventrally flattened, oval-shaped body. Between 29 and 31 segments, with 13 pairs of elytra on segments covering dorsum. Elytra covered completely by polygonal areas enclosing areolae, with marginal papillae covering edges. Prostomium bilobed and slightly rounded. Eyes absent. Lateral and median antennae absent. Segment 1 with pair of smooth palps and pair of tentaculophores plus enlarged anterior cirri (tentacular cirri). Mouth anterior with eversible pharynx. Segment 2 with buccal cirri. Segment 3 with dorsal tubercles. Dorsal cirri long with short styles. Ventral cirri short. Anus dorsal. Parapodia biramous with dense bundles of feathered notochaetae and less dense hooked neurochaetae.</paragraph>
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</subSubSection>
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<subSubSection lastPageId="7" lastPageNumber="96" pageId="5" pageNumber="94" type="description">
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<paragraph pageId="5" pageNumber="94">Description.</paragraph>
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<paragraph pageId="5" pageNumber="94">
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In life, elytra pale brown with yellow tinge, becoming slightly paler after preservation. Body ventrally flattened, slightly tapered at anterior and posterior ends (Figure 6
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<normalizedToken originalValue="A–D">A-D</normalizedToken>
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). Holotype with 31 segments, 13 pairs of elytra, bacterial filaments on elytra (Figure 6A, B). One mature paratype SIO-BIC A7969, 29 segments, 13 pairs of elytra (Figure 6C, D). One juvenile paratype (SIO-BIC A7971), 19 segments, eight pairs of elytra (identified by scars; elytra lost in sampling).
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</paragraph>
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<caption pageId="5" pageNumber="94">
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<paragraph pageId="5" pageNumber="94">
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Figure 6. Micrographs of live
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="5" pageNumber="94" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
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, sp. n., holotype (SIO-BIC A8557) and paratype (SIO-BIC A7969). Scale bars in
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<normalizedToken originalValue="A–E">A-E</normalizedToken>
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represent 1 mm, and scale bars in
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<normalizedToken originalValue="F–H">F-H</normalizedToken>
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represent 0.5 mm. A Dorsal view of whole body, holotype B Ventral view of whole body with pharynx everted, holotype C Dorsal view of whole body, paratype D Ventral view of whole body, paratype E Dorsal view of anterior region with scales, holotype F Dorsal view of anterior region with 2 pairs of scales removed, holotype. Abbreviations as follows: tp, terminal papilla; p, palp; t, tentaculophore; e, elytrophore G Ventral view of anterior region with pharynx and jaws everted/visible, holotype. Abbreviations: dj, dorsal jaw; tp, terminal papilla; vj, ventral jaw H Dorsal view of anterior region, paratype. e, elytrophore; bp, prostomium (bilobed); mn, medial nodule.
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</paragraph>
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</caption>
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<paragraph lastPageId="7" lastPageNumber="96" pageId="5" pageNumber="94">
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Pharynx everted anteriorly in holotype, with 9 pairs terminal papillae, and dorsal and ventral pairs of hook-shaped jaws (Figs 6
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<normalizedToken originalValue="E–G">E-G</normalizedToken>
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, 7
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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). Prostomium bilobed, slightly rounded; eyes lacking (Figure 6H). Dorsal small circular medial nodules on segments 4 (1), and 5-8 (2 per segment) (Figure 6H). Lateral and median antennae lacking (Figs 6
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<normalizedToken originalValue="F–H">F-H</normalizedToken>
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, 7
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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). Pair of smooth palps, longer than pair of tentaculophores plus enlarged anterior cirri (tentacular cirri) (Figs 6F, 7
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<normalizedToken originalValue="A–B">A-B</normalizedToken>
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, D). Tentaculophores extending laterally to prostomium (Figs 6F, 7
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<normalizedToken originalValue="A–B">A-B</normalizedToken>
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, D), each with single acicula and very thin, short capillary chaetae on inner side. Enlarged anterior cirri, dorsal cirri, and ventral cirri with papillae (Figure 7). Buccal cirri on segment 2, also papillate, appearing larger than
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<pageBreakToken pageId="6" pageNumber="95" start="start">remaining</pageBreakToken>
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ventral cirri (Figure 7C, E). Thirteen pairs of elytra covering dorsum and oval in shape, on segments 2, 4, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 26 (Figure 8). First pair of elytra slightly compressed (Figure 8A); last pair much smaller in size and tapered at one end compared to other elytra (Figure 8
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<normalizedToken originalValue="B–C">B-C</normalizedToken>
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). Elytra covered completely by polygonal (generally hexagonal) areas enclosing areolae (Figure 8
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<normalizedToken originalValue="D–F">D-F</normalizedToken>
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). Thin, rounded marginal
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<pageBreakToken pageId="7" pageNumber="96" start="start">papillae</pageBreakToken>
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covering lateral edges of elytra, sometimes sparsely extending towards posterior edges of elytra (Figure 8D-F). Remaining segments cirrigerous. Dorsal tubercles and dorsal cirri on segment 3, alternating on segments 6-29, with short, clavate papillae; anal cirri on segments 30, 31 (Figure 6B, D). Dorsal cirri long with short styles, usually extending to near tips of neurochaetae. Ventral cirri much shorter and smaller than dorsal cirri, present on segments 2-29 (Figure 7
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<normalizedToken originalValue="B–C">B-C</normalizedToken>
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, E). Anus dorsal; short ventral anal cirri similar to posterior dorsal cirri. Parapodia biramous (Figure 9), with short, subconical notopodia anterodorsal to larger neuropodia (Figure 9). Dense bundles of slender feathered notochaetae, shorter than neurochaetae (Figure 9F, H, J, L). Longer, simple, or slightly hooked neurochaetae, less dense but more numerous than notochaetae (Figure 9G, I, K). Upper neurochaetae generally longer than lower neurochaetae, with length of neurochaetae gradually decreasing towards dorsal and ventral edges (Figure 9).
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</paragraph>
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<paragraph pageId="7" pageNumber="96">Variation. Paratypes vary in segment number from holotype and were observed with fewer bacterial filaments on elytra.</paragraph>
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<caption pageId="7" pageNumber="96">
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<paragraph pageId="7" pageNumber="96">
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Figure 7. Micrographs of
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
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sp. n. holotype (SIO-BIC A8557) and paratype (SIO-BIC A7971), stained with Shirlastain-A. Scale bars in
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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represent 1 mm, and scale bars in
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<normalizedToken originalValue="D–E">D-E</normalizedToken>
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represent 0.25 mm. A Dorsal view of anterior with 2 pairs of scales removed, holotype B Ventral view of anterior showing palps tentaculophore and cirri, paratype. C Ventral view of anterior with pharynx everted and jaws visible, holotype D Magnified dorsal view of anterior right side, holotype. Abbreviations as follows: e, elytrophore; p, palp; t, tentaculophore; eac, enlarged anterior cirrus E Magnified ventral view of left anterior parapodia and ventral cirri on segments 2 and 3, holotype. Abbreviations: bc, buccal cirrus; vc, ventral cirrus.
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</paragraph>
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</caption>
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<caption pageId="7" pageNumber="96">
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<paragraph pageId="7" pageNumber="96">
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Figure 8. Interference contrast micrographs of
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
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sp. n elytra, paratype (SIO-BIC A7969). Scale bars in
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<normalizedToken originalValue="A–C">A-C</normalizedToken>
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represent 1mm, and scale bars in
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<normalizedToken originalValue="D–F">D-F</normalizedToken>
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represent 0.1 mm. A Right elytron 1 B Right elytron 3 C Left elytron 13 D Right elytron 1 margin E Right elytron 3 margin F Left elytron 13 margin.
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</paragraph>
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</caption>
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<caption pageId="7" pageNumber="96">
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<paragraph pageId="7" pageNumber="96">
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Figure 9. Interference contrast micrographs of
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
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sp. n. parapodia, (paratype SIO-BIC A7969). Scale bars in
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<normalizedToken originalValue="A–D">A-D</normalizedToken>
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represent 0.5 mm, and scale bars in
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<normalizedToken originalValue="E–L">E-L</normalizedToken>
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represent 0.1 mm. A Right parapodium 1 B Right parapodium 2 C Right parapodium 13 D Right parapodium 25 E Enlarged view of ventral cirrus (parapodium 2) F Feathered notochaetae (parapodium 2) G Chaetae of parapodium 25 H Notochaetae of right parapodium 2. I Slightly hooked neurochaetae (right parapodium 25) J Feathered notochaetae of parapodium 25 K Simple neurochaetae (some slightly hooked) from right parapodium 13. L Feathered notochaetae from right parapodium 13.
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</paragraph>
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</caption>
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</subSubSection>
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<subSubSection pageId="7" pageNumber="96" type="genetic distance">
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<paragraph pageId="7" pageNumber="96">Genetic distance.</paragraph>
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<paragraph pageId="7" pageNumber="96">Paratype specimens from the 23°S sampling locality varied by two nucleotide bases from the holotype specimen, 37°S (Figure 4B). This genetic distance is so small that they are certainly all the same species. Unfortunately, our sampling was too limited for any analyses of connectivity.</paragraph>
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</subSubSection>
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<subSubSection pageId="7" pageNumber="96" type="etymology">
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<paragraph pageId="7" pageNumber="96">Etymology.</paragraph>
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<paragraph pageId="7" pageNumber="96">
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
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sp. n. is named after the traditional Polynesian name for Easter Island (Rapa Nui), which lies near one of the paratype localities. Neither of the specimens from near Easter Island were chosen as the holotype as they were in poor condition.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="7" pageNumber="96" type="remarks">
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<paragraph pageId="7" pageNumber="96">Remarks.</paragraph>
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<paragraph pageId="7" pageNumber="96">
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
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sp. n. was collected from hydrothermal vents across 15 degrees of latitude, with the northernmost samples collected from the western flank of the Easter Microplate region at 23°S latitude, and the samples from further south collected on the East Pacific Rise at 37°S. The northernmost samples of
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
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sp. n. were collected from the same locality as samples of its sister taxon,
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<taxonomicName lsidName="T. tufari" pageId="7" pageNumber="96" rank="species" species="tufari">T. tufari</taxonomicName>
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, which previously has only been recorded from slightly further north at 21°30'S (
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<bibRefCitation author="Hartmann-Schroeder, G" journalOrPublisher="Helgolander Meeresuntersuchungen" pageId="9" pageNumber="98" pagination="389 - 403" title="Zur Polychaetenfauna in rezenten hydrothermalen Komplexmassivsulfiderzen (" Schwarze Raucher ") am Ostpazifischen Rucken bei 21 ° 30 ' S." url="https://doi.org/10.1007/BF02367206" volume="46" year="1992">
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<normalizedToken originalValue="Hartmann-Schröder">Hartmann-Schroeder</normalizedToken>
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1992
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</bibRefCitation>
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).
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</paragraph>
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<paragraph pageId="7" pageNumber="96">
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
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sp. n. differs from its sister taxon
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<taxonomicName lsidName="T. tufari" pageId="7" pageNumber="96" rank="species" species="tufari">T. tufari</taxonomicName>
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in that it has 13 pairs of elytra instead of 14 pairs of elytra and the last pair of elytra are on segment 26 instead of segment 27 (compare dorsal photos of each in Figs 6A and 5C, respectively). Like
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<taxonomicName lsidName="T. tufari" pageId="7" pageNumber="96" rank="species" species="tufari">T. tufari</taxonomicName>
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, the new species also has up to 31 segments (
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<bibRefCitation author="Hartmann-Schroeder, G" journalOrPublisher="Helgolander Meeresuntersuchungen" pageId="9" pageNumber="98" pagination="389 - 403" title="Zur Polychaetenfauna in rezenten hydrothermalen Komplexmassivsulfiderzen (" Schwarze Raucher ") am Ostpazifischen Rucken bei 21 ° 30 ' S." url="https://doi.org/10.1007/BF02367206" volume="46" year="1992">
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<normalizedToken originalValue="Hartmann-Schröder">Hartmann-Schroeder</normalizedToken>
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1992
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</bibRefCitation>
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). Both
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<taxonomicName lsidName="T. tufari" pageId="7" pageNumber="96" rank="species" species="tufari">T. tufari</taxonomicName>
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and
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<taxonomicName lsidName="T. fijiensis" pageId="7" pageNumber="96" rank="species" species="fijiensis">T. fijiensis</taxonomicName>
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(Figure 5A) have 14 pairs of elytra and 30-31 segments (Pettibone, 1986), so elytral number may be convergent (Figure 3).
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="genus">Thermiphione</taxonomicName>
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was erected by
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<bibRefCitation author="Hartmann-Schroeder, G" journalOrPublisher="Helgolander Meeresuntersuchungen" pageId="9" pageNumber="98" pagination="389 - 403" title="Zur Polychaetenfauna in rezenten hydrothermalen Komplexmassivsulfiderzen (" Schwarze Raucher ") am Ostpazifischen Rucken bei 21 ° 30 ' S." url="https://doi.org/10.1007/BF02367206" volume="46" year="1992">
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<normalizedToken originalValue="Hartmann-Schröder">Hartmann-Schroeder</normalizedToken>
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(1992)
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</bibRefCitation>
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and distinguished from other
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<taxonomicName family="Iphionidae" lsidName="" pageId="7" pageNumber="96" rank="family">Iphionidae</taxonomicName>
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largely based on the presence of 14 pairs of elytra and 30-31 segments, but
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Iphionella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Iphionella risensis" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="species" species="risensis">Iphionella risensis</taxonomicName>
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(Figure 5B), which nests within the
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<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="genus">Thermiphione</taxonomicName>
|
||
(Figure 2), and
|
||
<taxonomicName class="Polychaeta" family="Iphionidae" genus="Thermiphione" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Thermiphione rapanui" order="Phyllodocida" pageId="7" pageNumber="96" phylum="Annelida" rank="species" species="rapanui">Thermiphione rapanui</taxonomicName>
|
||
sp. n. have 13 elytral pairs (
|
||
<bibRefCitation author="Pettibone, MH" journalOrPublisher="Smithsonian Contribution to Zoology" pageId="9" pageNumber="98" pagination="1 - 43" title="Review of the Iphioninae (Polychaeta: Polynoidae) and revision of Iphionecimex Quatrefages, Gattyanadeludens Fauvel, and Harmothoeiphionelloides Johnson (Harmothoinae)." url="https://doi.org/10.5479/si.00810282.428" volume="428" year="1986">Pettibone 1986</bibRefCitation>
|
||
). However, the two latter species differ in that
|
||
<taxonomicName lsidName="I. risensis" pageId="7" pageNumber="96" rank="species" species="risensis">I. risensis</taxonomicName>
|
||
has 28-29 segments (
|
||
<bibRefCitation author="Pettibone, MH" journalOrPublisher="Smithsonian Contribution to Zoology" pageId="9" pageNumber="98" pagination="1 - 43" title="Review of the Iphioninae (Polychaeta: Polynoidae) and revision of Iphionecimex Quatrefages, Gattyanadeludens Fauvel, and Harmothoeiphionelloides Johnson (Harmothoinae)." url="https://doi.org/10.5479/si.00810282.428" volume="428" year="1986">Pettibone 1986</bibRefCitation>
|
||
) and
|
||
<taxonomicName lsidName="T. rapanui" pageId="7" pageNumber="96" rank="species" species="rapanui">T. rapanui</taxonomicName>
|
||
sp. n. has 29-31 segments.
|
||
<taxonomicName lsidName="T. rapanui" pageId="7" pageNumber="96" rank="species" species="rapanui">T. rapanui</taxonomicName>
|
||
sp. n. also differs from
|
||
<taxonomicName lsidName="I. risensis" pageId="7" pageNumber="96" rank="species" species="risensis">I. risensis</taxonomicName>
|
||
in the presence of medial nodules on segments 6-8 in
|
||
<taxonomicName lsidName="T. rapanui" pageId="7" pageNumber="96" rank="species" species="rapanui">T. rapanui</taxonomicName>
|
||
sp. n., which are absent on these segments in
|
||
<taxonomicName lsidName="I. risensis" pageId="7" pageNumber="96" rank="species" species="risensis">I. risensis</taxonomicName>
|
||
(
|
||
<bibRefCitation author="Pettibone, MH" journalOrPublisher="Smithsonian Contribution to Zoology" pageId="9" pageNumber="98" pagination="1 - 43" title="Review of the Iphioninae (Polychaeta: Polynoidae) and revision of Iphionecimex Quatrefages, Gattyanadeludens Fauvel, and Harmothoeiphionelloides Johnson (Harmothoinae)." url="https://doi.org/10.5479/si.00810282.428" volume="428" year="1986">Pettibone 1986</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |