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<treatment ID-GBIF-Taxon="152035383" LSID="urn:lsid:plazi:treatment:073E07D5EE02DE84FF5878CAB7D4DDE0" httpUri="http://treatment.plazi.org/id/073E07D5EE02DE84FF5878CAB7D4DDE0" lastPageId="7" lastPageNumber="8" pageId="4" pageNumber="5">
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<subSubSection pageId="4" pageNumber="5" type="nomenclature">
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<paragraph pageId="4" pageNumber="5">
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<taxonomicName LSID="http://species-id.net/wiki/Ilyphagus_bythincola" authority="Chamberlin, 1919" authorityName="Chamberlin" authorityYear="1919" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola Chamberlin, 1919</taxonomicName>
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<treatment id="073E07D5EE02DE84FF5878CAB7D4DDE0" ID-GBIF-Taxon="152035383" LSID="urn:lsid:plazi:treatment:073E07D5EE02DE84FF5878CAB7D4DDE0" httpUri="http://treatment.plazi.org/id/073E07D5EE02DE84FF5878CAB7D4DDE0" lastPageId="7" lastPageNumber="8" pageId="4" pageNumber="5" scope_class="Polychaeta" scope_family="Flabelligeridae">
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<subSubSection id="154B06992FBFB79F588FCDD6C0CD975F" pageId="4" pageNumber="5" type="nomenclature">
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<paragraph id="DA55528EA7B06C1A6898142663134FA9" pageId="4" pageNumber="5">
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<taxonomicName id="AD858B8DF5DD0BC4F7E87525FAC6FE3C" ID-CoL="3PHFH" LSID="http://species-id.net/wiki/Ilyphagus_bythincola" authority="Chamberlin, 1919" authorityName="Chamberlin" authorityYear="1919" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola Chamberlin, 1919</taxonomicName>
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||||
Figures 12
|
||||
</paragraph>
|
||||
</subSubSection>
|
||||
<subSubSection pageId="4" pageNumber="5" type="reference_group">
|
||||
<paragraph pageId="4" pageNumber="5">
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<subSubSection id="9AADBEC5D6350773C7A189F048B57A9F" pageId="4" pageNumber="5" type="reference_group">
|
||||
<paragraph id="95E02BC3B4B4979FBF621926EB915144" pageId="4" pageNumber="5">
|
||||
<taxonomicName id="68AB74644880B57E27FE66E74C1676CC" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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||||
Chamberlin, 1919:402-403, pl. 69, Figs 4-9;
|
||||
<bibRefCitation author="Hartman, O" journalOrPublisher="Allan Hancock Pacific Expeditions" pageId="13" pageNumber="14" pagination="69 - 215" title="Systematic account of some marine invertebrate animals from the deep basins of Southern California." volume="22" year="1960">Hartman 1960</bibRefCitation>
|
||||
<bibRefCitation id="2407BA8A554FB29889B30D8C8C7DC51F" author="Hartman, O" journalOrPublisher="Allan Hancock Pacific Expeditions" pageId="13" pageNumber="14" pagination="69 - 215" title="Systematic account of some marine invertebrate animals from the deep basins of Southern California." volume="22" year="1960">Hartman 1960</bibRefCitation>
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||||
:131;
|
||||
<bibRefCitation author="Levenstein, RY" journalOrPublisher="Okeanologiya" pageId="14" pageNumber="15" pagination="136 - 139" title="Novye dannye o mnogoshchetinkovykh chervyakh (Polychaeta) Yavanskoi vpadiny." volume="1" year="1961 b">Levenstein 1961b</bibRefCitation>
|
||||
<bibRefCitation id="EC8DA1435BFEB4BA9FEFD121C1B55FA8" author="Levenstein, RY" journalOrPublisher="Okeanologiya" pageId="14" pageNumber="15" pagination="136 - 139" title="Novye dannye o mnogoshchetinkovykh chervyakh (Polychaeta) Yavanskoi vpadiny." volume="1" year="1961 b">Levenstein 1961b</bibRefCitation>
|
||||
:136;
|
||||
<bibRefCitation author="Fauchald, K" journalOrPublisher="Allan Hancock Monographs in Marine Biology" pageId="13" pageNumber="14" pagination="1 - 575" title="Benthic polychaetous annelids from deep waters off Western Mexico and adjacent areas in the Eastern Pacific Ocean." volume="7" year="1972">Fauchald 1972</bibRefCitation>
|
||||
<bibRefCitation id="BAB6B4B55B9720AC426E4CB150DD101A" author="Fauchald, K" journalOrPublisher="Allan Hancock Monographs in Marine Biology" pageId="13" pageNumber="14" pagination="1 - 575" title="Benthic polychaetous annelids from deep waters off Western Mexico and adjacent areas in the Eastern Pacific Ocean." volume="7" year="1972">Fauchald 1972</bibRefCitation>
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||||
:224-225.
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||||
</paragraph>
|
||||
<paragraph pageId="4" pageNumber="5">
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||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
<paragraph id="EE11E01B208D60390BCBDC37ED819500" pageId="4" pageNumber="5">
|
||||
<taxonomicName id="586E9ED717268096027E1013CD7AFF2C" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
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||||
Chamberlin, 1919:403-404;
|
||||
<bibRefCitation author="Hartman, O" journalOrPublisher="Allan Hancock Pacific Expeditions" pageId="13" pageNumber="14" pagination="69 - 215" title="Systematic account of some marine invertebrate animals from the deep basins of Southern California." volume="22" year="1960">Hartman 1960</bibRefCitation>
|
||||
<bibRefCitation id="A5F9D599D623660BC956371DE7917AEE" author="Hartman, O" journalOrPublisher="Allan Hancock Pacific Expeditions" pageId="13" pageNumber="14" pagination="69 - 215" title="Systematic account of some marine invertebrate animals from the deep basins of Southern California." volume="22" year="1960">Hartman 1960</bibRefCitation>
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||||
:131-132.
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||||
</paragraph>
|
||||
</subSubSection>
|
||||
<subSubSection pageId="4" pageNumber="5" type="type material">
|
||||
<paragraph pageId="4" pageNumber="5">Type material.</paragraph>
|
||||
<paragraph pageId="4" pageNumber="5">
|
||||
<subSubSection id="474C8097D69392011C65CC4A51CB2228" pageId="4" pageNumber="5" type="type material">
|
||||
<paragraph id="4275A3DB0DDFB8599F61D4DF146EB433" pageId="4" pageNumber="5">Type material.</paragraph>
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||||
<paragraph id="8FEE2AA85F06A11C42707C4306BA5095" pageId="4" pageNumber="5">
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Eastern Pacific Ocean. Holotype of
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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||||
<taxonomicName id="E88DA2EA1810137FC2797A588A579192" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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(USNM 19748), one paratype (USNM 19384), off Mexico, R/V Albatross, Stat. 3415 (
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||||
<geoCoordinate direction="north" orientation="latitude" precision="925" value="14.766666">14°46'N</geoCoordinate>
|
||||
<geoCoordinate id="65212EBD20572A84296C1791A2C12368" direction="north" orientation="latitude" precision="925" value="14.766666">14°46'N</geoCoordinate>
|
||||
,
|
||||
<geoCoordinate direction="west" orientation="longitude" precision="925" value="-98.666664">98°40'W</geoCoordinate>
|
||||
<geoCoordinate id="C8A4A752DDEA56C616D384095D6D5818" direction="west" orientation="longitude" precision="925" value="-98.666664">98°40'W</geoCoordinate>
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), 1879 fathoms (3438.6 m), 10 Apr. 1891 (paratype two fragments; may belong to the same organism, not measured). Holotype of
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
<taxonomicName id="B28CDE313F3D99287692B0EEE394362A" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
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(USNM 19735), off Hood Island, Galapagos Islands, 12 miles (19.3 km) SE Ripple Point, R/VAlbatross, Stat. 4649 (
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||||
<geoCoordinate direction="south" orientation="latitude" precision="925" value="-1.5833333">01°35'S</geoCoordinate>
|
||||
<geoCoordinate id="9BA30F595C2177C7D731ED14235B5474" direction="south" orientation="latitude" precision="925" value="-1.5833333">01°35'S</geoCoordinate>
|
||||
,
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<geoCoordinate direction="west" orientation="longitude" precision="925" value="-89.5">89°30'W</geoCoordinate>
|
||||
<geoCoordinate id="35D269CF8BE5645CD8223DFE72B500F7" direction="west" orientation="longitude" precision="925" value="-89.5">89°30'W</geoCoordinate>
|
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), 633 fathoms (1158.4 m), 10 Nov. 1904.
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</paragraph>
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<caption pageId="4" pageNumber="5">
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<paragraph pageId="4" pageNumber="5">
|
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<caption id="2B6CD6F850320062CDAE9E4AFDB9F0D0" pageId="4" pageNumber="5">
|
||||
<paragraph id="1D8F130B8E6015E9DE5C269212E37140" pageId="4" pageNumber="5">
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Figure 1.
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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<taxonomicName id="C73C0BE3EF0ADAC10387411525F44A67" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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Chamberlin, 1919. A Holotype (USNM 19748) of
|
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<taxonomicName id="13C36395610F5E28371852392E4794A2" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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, dorsal view B Same, ventral view C Same, anterior margin, chaetiger 1 D Same, close-up showing chaetal cage scars E Holotype (USNM 19735) of
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
<taxonomicName id="D88AC56339366E70F63D92B03253493E" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
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, dorsal view F Same, ventral view G Same, anterior end, dorsal view H Same, close-up showing chaetal scars and remaining chaetae. Bars.- A 5.9 mm B 5.6 mm C 1.5 mm D 0.8 mm
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<normalizedToken originalValue="E–F">E-F</normalizedToken>
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||||
<normalizedToken id="05F199F959F35D4F8B1F41A95807162A" originalValue="E–F">E-F</normalizedToken>
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6.8 mm G 3 mm H 1 mm.
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</paragraph>
|
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</caption>
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<caption pageId="4" pageNumber="5">
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<paragraph pageId="4" pageNumber="5">
|
||||
<caption id="1C8C46E2AE7D50EF59C79E0D8863547C" pageId="4" pageNumber="5">
|
||||
<paragraph id="82D1A738348BA5523BFA0DED08126964" pageId="4" pageNumber="5">
|
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Figure 2.
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<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<taxonomicName id="7CD31973A963F134B0CD6EB0C172B471" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
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||||
Chamberlin, 1919, non-type specimens. A Complete (USNM-49080), dorsal view B Head (SIORAS-unnumb.), frontal view (BS branchial scars, LL lateral lip, PS palp scar) C Same, chaetiger 5, ventral view, left neuropodium and gonopodial lobe D Same, chaetiger 10, right parapodium E Same, basal, medial and distal notochaetal regions F Same, median region and tips of neurochaetae. Bars.- A 4.9 mm B 2.3 mm C 0.6 mm D 0.7 mm E 70
|
||||
<normalizedToken originalValue="µm">µm</normalizedToken>
|
||||
<normalizedToken id="CE4D2350B951F41BE78A5C99C4BB3DB9" originalValue="µm">µm</normalizedToken>
|
||||
F 30
|
||||
<normalizedToken originalValue="µm">µm</normalizedToken>
|
||||
<normalizedToken id="A42CF39DE91D3220EFFC50118F703617" originalValue="µm">µm</normalizedToken>
|
||||
.
|
||||
</paragraph>
|
||||
</caption>
|
||||
</subSubSection>
|
||||
<subSubSection pageId="4" pageNumber="5" type="additional material">
|
||||
<paragraph pageId="4" pageNumber="5">Additional material.</paragraph>
|
||||
<paragraph pageId="4" pageNumber="5">
|
||||
<subSubSection id="29E086E78B47911755A21ACC0EE5CA09" pageId="4" pageNumber="5" type="additional material">
|
||||
<paragraph id="086976AEABCB0BA73D75C9AD16AF6DD2" pageId="4" pageNumber="5">Additional material.</paragraph>
|
||||
<paragraph id="DE460734152204597E78DF32113D0FD4" pageId="4" pageNumber="5">
|
||||
Eastern Pacific Ocean. One specimen (USNM 49080), off Mexico, R/V Albatross, Stat. 3415 (
|
||||
<geoCoordinate direction="north" orientation="latitude" precision="925" value="14.766666">14°46'N</geoCoordinate>
|
||||
<geoCoordinate id="D8177F496AB7E8235EFA4F1214207772" direction="north" orientation="latitude" precision="925" value="14.766666">14°46'N</geoCoordinate>
|
||||
,
|
||||
<geoCoordinate direction="west" orientation="longitude" precision="925" value="-98.666664">98°40'W</geoCoordinate>
|
||||
<geoCoordinate id="B374FA6D49281F8B6211CCFFBF2CAE94" direction="west" orientation="longitude" precision="925" value="-98.666664">98°40'W</geoCoordinate>
|
||||
), 1879 fathoms (3438.6 m), 10 Apr. 1891 complete, K. Fauchald, id. (24 mm long, 9 mm wide, cephalic cage +17 mm long, 22 chaetigers). Two complete specimens (SIORAS-unumb.), R/V Akademik Kurchatov, Stat. 294 (
|
||||
<geoCoordinate direction="south" orientation="latitude" precision="925" value="-8.383333">08°23'S</geoCoordinate>
|
||||
<geoCoordinate id="C5EECD7DD27E1A278276F7CCF275624B" direction="south" orientation="latitude" precision="925" value="-8.383333">08°23'S</geoCoordinate>
|
||||
,
|
||||
<geoCoordinate direction="west" orientation="longitude" precision="925" value="-81.0">81°00'W</geoCoordinate>
|
||||
<geoCoordinate id="F25B4DF18A8A005D2B28465B547615FD" direction="west" orientation="longitude" precision="925" value="-81.0">81°00'W</geoCoordinate>
|
||||
), off Nazca Ridge, 6200-6240 m, Sigsbee trawl, 31 Oct./1 Nov. 1968 (43-75 mm long, 5-8 mm wide, cephalic cage 0-13 mm long (broken), 22-23 chaetigers). Many specimens (SIORAS unnumbered), off Northern Peru, R/V Akademik Kurchatov, Stat. 301 (
|
||||
<geoCoordinate direction="south" orientation="latitude" precision="92" value="-5.8616667">05°51.7'S</geoCoordinate>
|
||||
<geoCoordinate id="F831B32CB6BC395F1AAF3B8C320E4D8D" direction="south" orientation="latitude" precision="92" value="-5.8616667">05°51.7'S</geoCoordinate>
|
||||
,
|
||||
<geoCoordinate direction="west" orientation="longitude" precision="92" value="-81.81333">81°48.8'W</geoCoordinate>
|
||||
<geoCoordinate id="3042E53DE7624E83DC3EF9E4EFC25A38" direction="west" orientation="longitude" precision="92" value="-81.81333">81°48.8'W</geoCoordinate>
|
||||
), 5300 m, 4 Nov. 1968 (best specimen 48 mm long, 19 mm wide, cephalic cage 21 mm long, 22 chaetigers).
|
||||
</paragraph>
|
||||
</subSubSection>
|
||||
<subSubSection lastPageId="7" lastPageNumber="8" pageId="4" pageNumber="5" type="description">
|
||||
<paragraph pageId="4" pageNumber="5">Description.</paragraph>
|
||||
<paragraph lastPageId="5" lastPageNumber="6" pageId="4" pageNumber="5">
|
||||
<subSubSection id="867F7ED5D591B9E6B7A383075CC8B9E2" lastPageId="7" lastPageNumber="8" pageId="4" pageNumber="5" type="description">
|
||||
<paragraph id="7511B820637DF7BC3E9DB4A02004F572" pageId="4" pageNumber="5">Description.</paragraph>
|
||||
<paragraph id="A0E2FB3CA639EDDCC55F404B013EDDF3" lastPageId="5" lastPageNumber="6" pageId="4" pageNumber="5">
|
||||
Holotype of
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<taxonomicName id="8D4DADE1BB7C63A28A154C9F2C79BDB9" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
(USNM-19748) damaged, ovoid, body wall broken by compression, depressed (Fig. 1A); 48 mm long, 26 mm wide, cephalic cage chaetae broken, 21 chaetigers. Holotype of
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
<taxonomicName id="D98DBC5A8B3A51D9C76DD53313511E75" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="4" pageNumber="5" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
(USNM 19735) with body digitate, ovoid, pointed anteriorly, rounded posteriorly (Fig. 1E); 55 mm long, 20 mm wide, cephalic cage 36 mm long (tips broken), 24 chaetigers. Body surface densely papillated, with fine sediment particles trapped between p
|
||||
<pageBreakToken pageId="5" pageNumber="6" start="start">apillae</pageBreakToken>
|
||||
<pageBreakToken id="189C9EC081C96846104C484ACE94C3C5" pageId="5" pageNumber="6" start="start">apillae</pageBreakToken>
|
||||
(Figs 1B, F, 2A); posterior region with longer papillae; each papillae filiform, most with tips pale, some with black tips.
|
||||
</paragraph>
|
||||
<paragraph lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6">
|
||||
<paragraph id="91FE72584E2E548C3EEE270D568DBDAB" lastPageId="6" lastPageNumber="7" pageId="5" pageNumber="6">
|
||||
Cephalic cage chaetae broken; scars present in chaetiger 1, short dorsal transverse row with 8-10 chaetal scars per side (Fig. 1C, D); holotype of
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="5" pageNumber="6" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
<taxonomicName id="107E53F619A5C763BC8B7566A7062FC6" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="5" pageNumber="6" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
with chaetae at least twice as long as body width, perhaps as long as body length (Fig. 1E). Chaetiger 1 (and perhaps 2) involved in the cephalic cage, dorsal; most cephalic cage chaetae broken from the base, 8 notochaetae; neurochaetae lateral, 7 per side, arranged in a short row, transverse (oblique in
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="5" pageNumber="6" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
<taxonomicName id="23EB687DED5F7525265F066423F9AA6B" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="5" pageNumber="6" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
, Fig. 1G, H).
|
||||
<pageBreakToken pageId="6" pageNumber="7" start="start">Non-type</pageBreakToken>
|
||||
<pageBreakToken id="7ABE40723B698EA99530F238D3FF328C" pageId="6" pageNumber="7" start="start">Non-type</pageBreakToken>
|
||||
specimens with chaetae as long as body length (Fig. 2A). Anterior dorsal margin of first chaetiger papillated. Anterior chaetigers without larger papillae. Anterior end observed in a non-type specimen (SIORAS).
|
||||
</paragraph>
|
||||
<paragraph pageId="6" pageNumber="7">Cephalic hood short, not exposed, margin smooth. Prostomium low, as dark as surrounding region; eyes not seen. Caruncle not seen. Palps large, thick, shorter than branchiae; palp lobes reduced. Lateral lips well developed; ventral and dorsal lips reduced.</paragraph>
|
||||
<paragraph pageId="6" pageNumber="7">Branchiae thick, digitate, in different sizes, sessile on branchial plate, in a horse-shoe pattern (Fig. 2B), one superior single row with four thick larger filaments, and six pairs of lateral filaments arranged in irregular double rows. Largest branchiae longer than palps. Nephridial lobes in branchial plate not seen. Chaetal transition from cephalic cage to body chaetae abrupt (most chaetae broken); first aristate neurospines in chaetiger 3. Gonopodial lobes not seen in holotype; non-type specimens with dark, digitate, small lobes in chaetiger 5 (Fig. 2C), or in chaetigers 5 and 6.</paragraph>
|
||||
<paragraph lastPageId="7" lastPageNumber="8" pageId="6" pageNumber="7">
|
||||
<paragraph id="38B383A3BFD56F780C44C2C345645577" pageId="6" pageNumber="7">Cephalic hood short, not exposed, margin smooth. Prostomium low, as dark as surrounding region; eyes not seen. Caruncle not seen. Palps large, thick, shorter than branchiae; palp lobes reduced. Lateral lips well developed; ventral and dorsal lips reduced.</paragraph>
|
||||
<paragraph id="6F6211DB2F0D7E53D4D023BD32FEE565" pageId="6" pageNumber="7">Branchiae thick, digitate, in different sizes, sessile on branchial plate, in a horse-shoe pattern (Fig. 2B), one superior single row with four thick larger filaments, and six pairs of lateral filaments arranged in irregular double rows. Largest branchiae longer than palps. Nephridial lobes in branchial plate not seen. Chaetal transition from cephalic cage to body chaetae abrupt (most chaetae broken); first aristate neurospines in chaetiger 3. Gonopodial lobes not seen in holotype; non-type specimens with dark, digitate, small lobes in chaetiger 5 (Fig. 2C), or in chaetigers 5 and 6.</paragraph>
|
||||
<paragraph id="1DC005B6665E7D0ECAD3236B3DAC3BDC" lastPageId="7" lastPageNumber="8" pageId="6" pageNumber="7">
|
||||
Parapodia slightly developed (Fig. 2D); notopodia without prominent lobe, chaetae emerge from the body wall. Median neuropodia ventrolateral, projected ridges.
|
||||
<pageBreakToken pageId="7" pageNumber="8" start="start">No</pageBreakToken>
|
||||
<pageBreakToken id="5B97467F13B6C4C0E06B50E84F941EEF" pageId="7" pageNumber="8" start="start">No</pageBreakToken>
|
||||
additional longer papillae associated with chaetal lobes. Noto- and neuropodia lateroventral, very close to each other.
|
||||
</paragraph>
|
||||
<paragraph pageId="7" pageNumber="8">Median notochaetae arranged in oblique rows, as long as one-fourth or one-fifth of body width, 2-3 per bundle; all notochaetae thin, multiarticulated capillaries, with short articles basally, median-sized medially, longer distally (Fig. 2E). Neurochaetae anchylosed aristate spines, 6-8 per bundle; broken, with short anchylosed articles, arranged in an oblique line. Other chaetal features not examined in holotype. Paratype with noto- and neurochaetae broken; non-type specimens with slightly curved, hyaline, smooth tips (Fig. 2F).</paragraph>
|
||||
<paragraph pageId="7" pageNumber="8">Posterior end rounded; pygidium with anus ventral, without anal cirri.</paragraph>
|
||||
<paragraph id="95F7962A09972B455C9D450B7E0AA645" pageId="7" pageNumber="8">Median notochaetae arranged in oblique rows, as long as one-fourth or one-fifth of body width, 2-3 per bundle; all notochaetae thin, multiarticulated capillaries, with short articles basally, median-sized medially, longer distally (Fig. 2E). Neurochaetae anchylosed aristate spines, 6-8 per bundle; broken, with short anchylosed articles, arranged in an oblique line. Other chaetal features not examined in holotype. Paratype with noto- and neurochaetae broken; non-type specimens with slightly curved, hyaline, smooth tips (Fig. 2F).</paragraph>
|
||||
<paragraph id="01944858B43C8F139A8E62D67F34BCFB" pageId="7" pageNumber="8">Posterior end rounded; pygidium with anus ventral, without anal cirri.</paragraph>
|
||||
</subSubSection>
|
||||
<subSubSection pageId="7" pageNumber="8" type="remarks">
|
||||
<paragraph pageId="7" pageNumber="8">Remarks.</paragraph>
|
||||
<paragraph pageId="7" pageNumber="8">The original body shape was digitate rather than sole-like; this distortion was the result of the sudden change of pressure, especially because of the sediment load in the dredge over its body. The damage resulted in the loss of all cephalic cage chaetae, but chaetal scars are visible in the corresponding position. This damage further compressed the body breaking its wall, and making it appear flat. Other specimens (SIORAS) are long, anteriorly swollen, posteriorly tapered; this is more pronounced among juveniles, and although the number of chaetigers is fixed early in development, counting depends on the presence of chaetae and they are often broken off.</paragraph>
|
||||
<paragraph pageId="7" pageNumber="8">
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<subSubSection id="A81E0F7A64F746674E37DC7F085B1D5A" pageId="7" pageNumber="8" type="remarks">
|
||||
<paragraph id="B5888CFE68B9EEC593834A0DA9F8E35F" pageId="7" pageNumber="8">Remarks.</paragraph>
|
||||
<paragraph id="EA49919B1EDA59C74CE75E86FE6C1319" pageId="7" pageNumber="8">The original body shape was digitate rather than sole-like; this distortion was the result of the sudden change of pressure, especially because of the sediment load in the dredge over its body. The damage resulted in the loss of all cephalic cage chaetae, but chaetal scars are visible in the corresponding position. This damage further compressed the body breaking its wall, and making it appear flat. Other specimens (SIORAS) are long, anteriorly swollen, posteriorly tapered; this is more pronounced among juveniles, and although the number of chaetigers is fixed early in development, counting depends on the presence of chaetae and they are often broken off.</paragraph>
|
||||
<paragraph id="57863AA4850C9446967488B44070AFD6" pageId="7" pageNumber="8">
|
||||
<taxonomicName id="CA41597CED8844D7524C8C7D9E3F412E" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
Chamberlin, 1919 and
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
<taxonomicName id="8A6BD212D46ADE94139E61CEDE68E2D7" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus ascendens" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="ascendens">Ilyphagus ascendens</taxonomicName>
|
||||
Chamberlin, 1919 are herein regarded as synonyms. The latter has cephalic cage chaetae in an oblique row, rather than in a transverse one as in
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<taxonomicName id="52F3DD7D09446545ED07E61B2B5D3C52" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
. This displacement results in a larger area between chaetae and the anterior margin of chaetiger 1. However, because the anterior end of
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<taxonomicName id="A7C95DA0A1E4BFD3E7722D731AB4FD6F" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
is severely damaged, and because other body features are similar, there are insufficientdifferences to keep them separate as distinct species.
|
||||
</paragraph>
|
||||
<paragraph pageId="7" pageNumber="8">
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<paragraph id="EED3AEEB6B50D615266680284518BC9E" pageId="7" pageNumber="8">
|
||||
<taxonomicName id="F0D4A52CCDF2F6EBFEC8520A03F8541B" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
resembles
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus hirsutus" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="hirsutus">Ilyphagus hirsutus</taxonomicName>
|
||||
<taxonomicName id="A74CA07759FB43B78511C03829DA1AEA" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus hirsutus" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="hirsutus">Ilyphagus hirsutus</taxonomicName>
|
||||
Monro, 1937, but they differ in the relative number of neurochaetae in chaetiger 1 and in the relative smoothness of neurochaetal tips. Thus,
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<taxonomicName id="7C48E71B70FC1E1F57FE6283CA7596A5" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
has about 8 neurochaetae in the first chaetiger, whereas there are 3-4 in
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus hirsutus" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="hirsutus">Ilyphagus hirsutus</taxonomicName>
|
||||
<taxonomicName id="6127B1B4C1ABD528ACAD7D66676E8325" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus hirsutus" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="hirsutus">Ilyphagus hirsutus</taxonomicName>
|
||||
, and in the former, the neurochaetal tips are mostly smooth or barely hirsute, whereas in
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus hirsutus" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="hirsutus">Ilyphagus hirsutus</taxonomicName>
|
||||
<taxonomicName id="6154964B8AE60EA8E12FE19116D24CF9" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus hirsutus" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="hirsutus">Ilyphagus hirsutus</taxonomicName>
|
||||
neurochaetae are markedly hirsute. At the same time,
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<taxonomicName id="95F53F8DDAE4AA061A8F060D78475BB1" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
resembles
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
|
||||
<taxonomicName id="9F879D133F9A1951B35029E78DE4C903" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
|
||||
(McIntosh, 1885), but they differ in the relative number of neurochaetae in chaetiger 1 and in the number of branchial filaments. Thus, in
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<taxonomicName id="0A7BF9C19D556DAC7F5C8A83CDCE61BB" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
there are 8 neurochaetae per side and about 40 branchial filaments, whereas in
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
|
||||
<taxonomicName id="43B7A53A208E940C2A65FB6D017A0D87" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus wyvillei" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="wyvillei">Ilyphagus wyvillei</taxonomicName>
|
||||
there are 10-12 neurochaetae and about 16 branchial filaments.
|
||||
</paragraph>
|
||||
</subSubSection>
|
||||
<subSubSection pageId="7" pageNumber="8" type="distribution">
|
||||
<paragraph pageId="7" pageNumber="8">Distribution.</paragraph>
|
||||
<paragraph pageId="7" pageNumber="8">
|
||||
<subSubSection id="021A1D5F7FE27F4C35BD6CD1C7ACFA94" pageId="7" pageNumber="8" type="distribution">
|
||||
<paragraph id="49EAE4F103533C925AA32D7BCE2729FC" pageId="7" pageNumber="8">Distribution.</paragraph>
|
||||
<paragraph id="6F3A743B05AB2F0A5601F57018103A0E" pageId="7" pageNumber="8">
|
||||
Apparently restricted to deep water off southwestern Mexico, to Galapagos and Peru, in 1260-6000 m. There have been two other records for this abyssal species.
|
||||
<bibRefCitation author="Levenstein, RY" journalOrPublisher="Okeanologiya" pageId="14" pageNumber="15" pagination="136 - 139" title="Novye dannye o mnogoshchetinkovykh chervyakh (Polychaeta) Yavanskoi vpadiny." volume="1" year="1961 b">Levenstein (1961b:</bibRefCitation>
|
||||
<bibRefCitation id="BC44F0D1E51DEFF7629F0619E6098B65" author="Levenstein, RY" journalOrPublisher="Okeanologiya" pageId="14" pageNumber="15" pagination="136 - 139" title="Novye dannye o mnogoshchetinkovykh chervyakh (Polychaeta) Yavanskoi vpadiny." volume="1" year="1961 b">Levenstein (1961b:</bibRefCitation>
|
||||
137, map), recorded it from the Java Trough, and
|
||||
<bibRefCitation author="Kirkegaard, JB" journalOrPublisher="Galathea Reports" pageId="14" pageNumber="15" pagination="63 - 78" title="Benthic Polychaeta from depths exceeding 6,000 meters." volume="2" year="1956">Kirkegaard (1956</bibRefCitation>
|
||||
<bibRefCitation id="A0B4996C98189014E6CBED0114FC1DD5" author="Kirkegaard, JB" journalOrPublisher="Galathea Reports" pageId="14" pageNumber="15" pagination="63 - 78" title="Benthic Polychaeta from depths exceeding 6,000 meters." volume="2" year="1956">Kirkegaard (1956</bibRefCitation>
|
||||
:70, Fig. 9) recorded it from the Sunda Trench. The former (ZIRAS-9451) was based on a specimen broken in two, much damaged, collected in 6850 m depth (RV Vitjaz, Stat. 4535, 10
|
||||
<normalizedToken originalValue="º">°</normalizedToken>
|
||||
<normalizedToken id="A9DB98FB9EF8CBB0394703AFBAEE501E" originalValue="º">°</normalizedToken>
|
||||
08'S, 107
|
||||
<normalizedToken originalValue="º">°</normalizedToken>
|
||||
<normalizedToken id="C4A3F33B503DE5BAAA0941E144EDE2C4" originalValue="º">°</normalizedToken>
|
||||
55'E). It resembles
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
<taxonomicName id="8EED12CE5B4D374B1A75B62F089AC22C" class="Polychaeta" family="Flabelligeridae" genus="Ilyphagus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Ilyphagus bythincola" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="species" species="bythincola">Ilyphagus bythincola</taxonomicName>
|
||||
but better specimens are needed for a complete identification or description. On the other hand, the specimen from the Sunda Trench belongs to an undescribed species in
|
||||
<taxonomicName class="Polychaeta" family="Flabelligeridae" genus="Bradabyssa" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Bradabyssa" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="genus">Bradabyssa</taxonomicName>
|
||||
<taxonomicName id="EC3A02C52DE65FBFAABC9B0676907DC7" class="Polychaeta" family="Flabelligeridae" genus="Bradabyssa" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Bradabyssa" order="Terebellida" pageId="7" pageNumber="8" phylum="Annelida" rank="genus">Bradabyssa</taxonomicName>
|
||||
, and will be described elsewhere.
|
||||
</paragraph>
|
||||
</subSubSection>
|
||||
|
|
|
|||
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