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<document id="E78BE1C28A73B3A93C541AB1B05401F6" ID="10.11646/zootaxa.4178.1.7" ID-DOI="10.11646/zootaxa.4178.1.7" ID-GBIF-Dataset="010eaa80-d9af-4918-b27c-c9f368047b83" ID-ISSN="1175-5326" ID-Zenodo-Dep="162382" ID-ZooBank="D45BF4A8-E989-450D-804A-3FFAA2AAFAFF" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1477037775855" checkinUser="plazi" docAuthor="Gasca, Rebeca &amp; Haddock, Steven H. D." docDate="2016" docId="03A93570FFE469701FAB4EA8FCB53961" docLanguage="en" docName="zootaxa.4178.1.7.pdf" docOrigin="Zootaxa 4178 (1)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Megalanceoloides remipes Barnard 1932" docType="treatment" docVersion="8" lastPageNumber="143" masterDocId="FF904D08FFE569751F3C4A36FFB93F15" masterDocTitle="The rare deep-living hyperiid amphipod Megalanceoloides remipes (Barnard, 1932): complementary description and symbiosis" masterLastPageNumber="144" masterPageNumber="138" pageNumber="139" updateTime="1698390389028" updateUser="plazi">
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<mods:title id="66DC0BCE6D628ED59EAB15EA82FA7B7A">The rare deep-living hyperiid amphipod Megalanceoloides remipes (Barnard, 1932): complementary description and symbiosis</mods:title>
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<mods:namePart id="016040798A393675ACF1AA2E1EB993FB">Gasca, Rebeca</mods:namePart>
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<mods:namePart id="C077B9429FFBD00F0FC4B7350FCDACED">Haddock, Steven H. D.</mods:namePart>
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<mods:date id="B9568A94332B7958845C62E88C64D9FD">2016</mods:date>
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<treatment id="03A93570FFE469701FAB4EA8FCB53961" ID-DOI="http://doi.org/10.5281/zenodo.6088184" ID-GBIF-Taxon="124557314" ID-Zenodo-Dep="6088184" LSID="urn:lsid:plazi:treatment:03A93570FFE469701FAB4EA8FCB53961" httpUri="http://treatment.plazi.org/id/03A93570FFE469701FAB4EA8FCB53961" lastPageId="5" lastPageNumber="143" pageId="1" pageNumber="139">
<subSubSection id="C31AD7EDFFE469741FAB4EA8FE963BCF" pageId="1" pageNumber="139" type="nomenclature">
<paragraph id="8BBF8466FFE469741FAB4EA8FD1F3BAD" blockId="1.[151,678,1182,1242]" box="[151,678,1182,1208]" pageId="1" pageNumber="139">
<heading id="D0F7330AFFE469741FAB4EA8FD1F3BAD" bold="true" box="[151,678,1182,1208]" fontSize="11" level="1" pageId="1" pageNumber="139" reason="1">
<taxonomicName id="4C00FFE5FFE469741FAB4EA8FD1F3BAD" ID-CoL="6QVZK" authority="Barnard, 1932" authorityName="Barnard" authorityYear="1932" box="[151,678,1182,1208]" class="Malacostraca" family="Megalanceolidae" genus="Megalanceoloides" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="1" pageNumber="139" phylum="Arthropoda" rank="species" species="remipes">
<emphasis id="B9745874FFE469741FAB4EA8FD1F3BAD" bold="true" box="[151,678,1182,1208]" pageId="1" pageNumber="139">
<emphasis id="B9745874FFE469741FAB4EA8FE6F3BAD" bold="true" box="[151,470,1182,1208]" italics="true" pageId="1" pageNumber="139">Megalanceoloides remipes</emphasis>
(
<bibRefCitation id="EF91F997FFE469741EDA4EA8FD273BAD" author="Barnard" box="[486,670,1182,1208]" pageId="1" pageNumber="139" refString="Barnard, K. H. (1932) Amphipoda. Discovery Reports, 5, 1 - 326. http: // dx. doi. org / 10.5962 / bhl. part. 27664" type="journal article" year="1932">Barnard, 1932</bibRefCitation>
)
</emphasis>
</taxonomicName>
</heading>
</paragraph>
<paragraph id="8BBF8466FFE469741FAB4EF7FE963BCF" blockId="1.[151,678,1182,1242]" box="[151,303,1217,1242]" pageId="1" pageNumber="139">
(
<figureCitation id="133B98E3FFE469741FA24EF7FE9F3BCF" box="[158,294,1217,1242]" captionStart-0="FIGURE 1" captionStart-1="FIGURE 2" captionStart-2="FIGURE 3" captionStart-3="FIGURE 4" captionStartId-0="2.[151,250,992,1014]" captionStartId-1="2.[151,250,1974,1996]" captionStartId-2="3.[151,250,1883,1905]" captionStartId-3="4.[151,250,1819,1841]" captionTargetBox-0="[151,1435,195,968]" captionTargetBox-1="[150,1435,1094,1952]" captionTargetBox-2="[187,1396,206,1855]" captionTargetBox-3="[154,1419,206,1788]" captionTargetId-0="figure@2.[151,1436,195,968]" captionTargetId-1="figure@2.[150,1436,1094,1952]" captionTargetId-2="figure@3.[170,1408,193,1870]" captionTargetId-3="figure@4.[151,1436,193,1798]" captionTargetPageId-0="2" captionTargetPageId-1="2" captionTargetPageId-2="3" captionTargetPageId-3="4" captionText-0="FIGURE 1. Megalanceoloides remipes (Barnard, 1932) ovigerous female from the Gulf of California photographed in vivo (2.5 mm), lateral view. Scale bar: 5 mm." captionText-1="FIGURE 2. Megalanceoloides remipes (Barnard, 1932), ovigerous female from the Gulf of California photographed in vivo, ventral view. Scale bar: 5 mm." captionText-2="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." captionText-3="FIGURE 4. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A – C. PII with details of distal segment and ornamentation of S 6; D – F. PIII with details of S 6; G. P IV S 6 and S 7; H. PV; I. PV detail of S 6 and S 7; J. PVI; K. same, detail of S 6 and S 7; L. PVII; M. same, detail of S 6 and S 7; N. UR 1, dorsal view; O. UR 2, dorsal view; P. same, ornamentation pattern. Scale bars: A, D, H, J, L = 1 mm (B, I, K, M = 0.25 mm; E, F = 0.5 mm)." httpUri-0="https://zenodo.org/record/162383/files/figure.png" httpUri-1="https://zenodo.org/record/162384/files/figure.png" httpUri-2="https://zenodo.org/record/162385/files/figure.png" httpUri-3="https://zenodo.org/record/162386/files/figure.png" pageId="1" pageNumber="139">Figures 1–4</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="C31AD7EDFFE469741FAB4F3FFB3A3A0A" box="[151,1155,1289,1311]" pageId="1" pageNumber="139" type="reference_group">
<paragraph id="8BBF8466FFE469741FAB4F3FFB3A3A0A" blockId="1.[151,1155,1289,1311]" box="[151,1155,1289,1311]" pageId="1" pageNumber="139">
<taxonomicName id="4C00FFE5FFE469741FAB4F3FFE663A0A" authority="Barnard 1932" authorityName="Barnard" authorityYear="1932" box="[151,479,1289,1311]" class="Malacostraca" family="Lanceolidae" genus="Lanceola" kingdom="Animalia" order="Amphipoda" pageId="1" pageNumber="139" phylum="Arthropoda" rank="species" species="remipes">
<emphasis id="B9745874FFE469741FAB4F3FFEF33A0A" box="[151,330,1289,1311]" italics="true" pageId="1" pageNumber="139">Lanceola remipes</emphasis>
<bibRefCitation id="EF91F997FFE469741E6D4F3FFE663A0A" author="Barnard" box="[337,479,1289,1311]" pageId="1" pageNumber="139" refString="Barnard, K. H. (1932) Amphipoda. Discovery Reports, 5, 1 - 326. http: // dx. doi. org / 10.5962 / bhl. part. 27664" type="journal article" year="1932">Barnard 1932</bibRefCitation>
</taxonomicName>
;
<taxonomicName id="4C00FFE5FFE469741ED54F3FFC303A0A" authority="Vinogradov 1964" authorityName="Vinogradov" authorityYear="1964" box="[489,905,1289,1311]" class="Malacostraca" family="Lanceolidae" genus="Megalanceola" kingdom="Animalia" order="Amphipoda" pageId="1" pageNumber="139" phylum="Arthropoda" rank="species" species="remipes">
<emphasis id="B9745874FFE469741ED54F3FFD763A0A" box="[489,719,1289,1311]" italics="true" pageId="1" pageNumber="139">Megalanceola remipes</emphasis>
<bibRefCitation id="EF91F997FFE469741DE94F3FFC303A0A" author="Vinogradov" box="[725,905,1289,1311]" pageId="1" pageNumber="139" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964</bibRefCitation>
</taxonomicName>
; Vinogradov
<emphasis id="B9745874FFE469741B2D4F3CFB843A0A" box="[1041,1085,1289,1311]" italics="true" pageId="1" pageNumber="139">et al</emphasis>
. 1996.
</paragraph>
</subSubSection>
<subSubSection id="C31AD7EDFFE469741FAB4F78FC2F3A9E" pageId="1" pageNumber="139" type="materials_examined">
<paragraph id="8BBF8466FFE469741FAB4F78FC2F3A9E" blockId="1.[151,1437,1355,2031]" pageId="1" pageNumber="139">
<materialsCitation id="3B688E3BFFE469741FAB4F78FC2F3A9E" ID-GBIF-Occurrence="1323916055" collectingDate="2015-03-08" collectionCode="ROV" elevation="94" latitude="109.85" location="Eastern Pacific" municipality="Farallon Basin" pageId="1" pageNumber="139" specimenCount="94" stateProvince="California">
<emphasis id="B9745874FFE469741FAB4F78FE393A72" bold="true" box="[151,384,1358,1383]" pageId="1" pageNumber="139">Material examined.</emphasis>
Adult female, collected
<collectingDate id="EFFA5B4EFFE469741DAD4F79FC973A72" box="[657,814,1358,1383]" pageId="1" pageNumber="139" value="2015-03-08">
<date id="FFBEA2A6FFE469741DAD4F79FC973A72" box="[657,814,1358,1383]" pageId="1" pageNumber="139" value="2015-03-08">
8 March
<quantity id="4CF82983FFE469741DCA4F78FC973A72" box="[758,814,1358,1383]" metricMagnitude="1" metricUnit="m" metricValue="5.1181" pageId="1" pageNumber="139" unit="in" value="2015.0">2015</quantity>
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in in
<collectingMunicipality id="6BDB1E1CFFE469741C514F78FBA93A72" box="[877,1040,1358,1383]" pageId="1" pageNumber="139">Farallon Basin</collectingMunicipality>
(25o 27’
<geoCoordinate id="EE34E2A1FFE469741B494F79FB573A72" box="[1141,1262,1355,1383]" direction="north" orientation="latitude" pageId="1" pageNumber="139" precision="925" value="109.85">109 o 51’N</geoCoordinate>
), southern Gulf of
<collectingRegion id="49C44A84FFE469741F894F45FE933A99" box="[181,298,1395,1420]" country="United States of America" name="California" pageId="1" pageNumber="139">California</collectingRegion>
,
<location id="8EDFD2BDFFE469741E084F42FE673A99" LSID="urn:lsid:plazi:treatment:03A93570FFE469701FAB4EA8FCB53961:8EDFD2BDFFE469741E084F42FE673A99" box="[308,478,1395,1420]" latitude="109.85" municipality="Farallon Basin" name="Eastern Pacific" pageId="1" pageNumber="139" stateProvince="California">Eastern Pacific</location>
by
<collectionCode id="ED111CA3FFE469741D3B4F45FDFB3A9E" box="[519,578,1395,1419]" country="Italy" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15413" name="Museo Civico di Rovereto" pageId="1" pageNumber="139">ROV</collectionCode>
submersible, depth: 2,0
<specimenCount id="9D064FEFFFE469741C684F45FC2F3A9E" box="[852,918,1395,1419]" pageId="1" pageNumber="139" type="generic">
<elevation id="002D6355FFE469741C684F45FC2B3A9E" box="[852,914,1395,1419]" metricMagnitude="1" metricUnit="m" metricValue="9.4" pageId="1" pageNumber="139" unit="m" value="94.0">
<quantity id="4CF82983FFE469741C684F45FC2B3A9E" box="[852,914,1395,1419]" metricMagnitude="1" metricUnit="m" metricValue="9.4" pageId="1" pageNumber="139" unit="m" value="94.0">94 m</quantity>
</elevation>
.
</specimenCount>
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="C31AD7EDFFE469741FFB4FA0FB4E38FA" pageId="1" pageNumber="139" type="discussion">
<paragraph id="8BBF8466FFE469741FFB4FA0FE033909" blockId="1.[151,1437,1355,2031]" pageId="1" pageNumber="139">
<emphasis id="B9745874FFE469741FFB4FA0FE823ABA" bold="true" box="[199,315,1430,1455]" pageId="1" pageNumber="139">Remarks.</emphasis>
This species was redescribed by
<bibRefCitation id="EF91F997FFE469741DF44FA0FCD63ABA" author="Zeidler" box="[712,879,1430,1455]" pageId="1" pageNumber="139" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler (2009)</bibRefCitation>
based on the
<typeStatus id="54BB3AC4FFE469741B244FA0FBC33ABA" box="[1048,1146,1430,1455]" pageId="1" pageNumber="139" type="holotype">holotype</typeStatus>
female from south–west Atlantic, but some of the appendages were missing in this specimen and were not described in the original work by
<bibRefCitation id="EF91F997FFE469741FAB4FE8FEFF3AE2" author="Barnard" box="[151,326,1502,1527]" pageId="1" pageNumber="139" refString="Barnard, K. H. (1932) Amphipoda. Discovery Reports, 5, 1 - 326. http: // dx. doi. org / 10.5962 / bhl. part. 27664" type="journal article" year="1932">Barnard (1932)</bibRefCitation>
. Our morphological comments emphasize these appendages/characters in order to complement the description of the species.
</paragraph>
<paragraph id="8BBF8466FFE469741FFB4C10FB4E38FA" blockId="1.[151,1437,1355,2031]" pageId="1" pageNumber="139">
The specimen examined is an ovigerous female. Total length:
<quantity id="4CF82983FFE469741C984C10FC4E392A" box="[932,1015,1574,1599]" metricMagnitude="-2" metricUnit="m" metricValue="2.5" pageId="1" pageNumber="139" unit="mm" value="25.0">25 mm</quantity>
Some of the characters of previous descriptions (
<bibRefCitation id="EF91F997FFE469741E0E4C7DFE6C3976" author="Barnard" box="[306,469,1611,1636]" pageId="1" pageNumber="139" refString="Barnard, K. H. (1932) Amphipoda. Discovery Reports, 5, 1 - 326. http: // dx. doi. org / 10.5962 / bhl. part. 27664" type="journal article" year="1932">Barnard 1932</bibRefCitation>
,
<bibRefCitation id="EF91F997FFE469741ED94C7DFD093971" author="Vinogradov" box="[485,688,1611,1636]" pageId="1" pageNumber="139" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964</bibRefCitation>
,
<bibRefCitation id="EF91F997FFE469741DFD4C7DFCE13976" author="Zeidler" box="[705,856,1611,1636]" pageId="1" pageNumber="139" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler 2009</bibRefCitation>
) can be clearly seen in the illustrations, like the relatively slender pereon, not laterally broadened; however, the specimen from the Gulf of
<collectingRegion id="49C44A84FFE469741BAF4C58FABC3992" box="[1171,1285,1646,1671]" country="United States of America" name="California" pageId="1" pageNumber="139">California</collectingRegion>
was carrying eggs and its body is dorsoventrally broadened (
<figureCitation id="133B98E3FFE469741D814CA5FCBD39BE" box="[701,772,1683,1708]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="1" pageNumber="139">Fig. 3</figureCitation>
). Most appendages are identical to previous descriptions. Particularly, the complete second antenna was not seen before by any of the other authors. This appendage is much longer than the first antenna, ensiform, with a characteristic pointed lobe on S2 and a larger lobe on S3 (
<figureCitation id="133B98E3FFE469741A1A4CEDFAD339E6" box="[1318,1386,1755,1780]" captionStart="FIGURE 2" captionStartId="2.[151,250,1974,1996]" captionTargetBox="[150,1435,1094,1952]" captionTargetId="figure@2.[150,1436,1094,1952]" captionTargetPageId="2" captionText="FIGURE 2. Megalanceoloides remipes (Barnard, 1932), ovigerous female from the Gulf of California photographed in vivo, ventral view. Scale bar: 5 mm." httpUri="https://zenodo.org/record/162384/files/figure.png" pageId="1" pageNumber="139">Fig. 2</figureCitation>
,
<figureCitation id="133B98E3FFE469741A4A4CEDFA3A39E6" box="[1398,1411,1755,1779]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="1" pageNumber="139">3</figureCitation>
E, F), S4 elongated, S5 0.62X, S4 with 4 terminal segments (
<figureCitation id="133B98E3FFE469741C7E4CC8FC3C3802" box="[834,901,1790,1815]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="1" pageNumber="139">Fig. 3</figureCitation>
D, G, H). Some doubts about the structure and segmentation of the maxillae 2 (
<collectingCountry id="F317C4F6FFE469741D244D15FDFB382E" box="[536,578,1827,1851]" name="Mexico" pageId="1" pageNumber="139">Mx</collectingCountry>
2) were left in
<bibRefCitation id="EF91F997FFE469741DC64D15FC18382E" author="Zeidler" box="[762,929,1827,1852]" pageId="1" pageNumber="139" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler (2009)</bibRefCitation>
and only a general view was provided by
<bibRefCitation id="EF91F997FFE469741FAB4D70FEC9384A" author="Vinogradov" box="[151,368,1862,1887]" pageId="1" pageNumber="139" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov (1964)</bibRefCitation>
. The bilobed
<collectingCountry id="F317C4F6FFE469741D304D71FD8D384A" box="[524,564,1863,1887]" name="Mexico" pageId="1" pageNumber="139">Mx</collectingCountry>
2 is here illustrated showing the spinulation pattern and the reticulate surface (
<figureCitation id="133B98E3FFE469741FA34D5DFF5A3896" box="[159,227,1899,1924]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="1" pageNumber="139">Fig. 3</figureCitation>
K), the outer lobe has 9 spinules, 4 of which are terminal; the inner lobe has 7 spinules set in a terminal cluster. The basal segment has 6 long terminal spinules. In the specimen from the Gulf of
<collectingRegion id="49C44A84FFE469741BB04DB8FB4738B2" box="[1164,1278,1934,1959]" country="United States of America" name="California" pageId="1" pageNumber="139">California</collectingRegion>
the basis of P VI and VII are not as abruptly narrowed proximally (
<figureCitation id="133B98E3FFE469741DC54D85FC8738DE" box="[761,830,1971,1996]" captionStart="FIGURE 4" captionStartId="4.[151,250,1819,1841]" captionTargetBox="[154,1419,206,1788]" captionTargetId="figure@4.[151,1436,193,1798]" captionTargetPageId="4" captionText="FIGURE 4. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A – C. PII with details of distal segment and ornamentation of S 6; D – F. PIII with details of S 6; G. P IV S 6 and S 7; H. PV; I. PV detail of S 6 and S 7; J. PVI; K. same, detail of S 6 and S 7; L. PVII; M. same, detail of S 6 and S 7; N. UR 1, dorsal view; O. UR 2, dorsal view; P. same, ornamentation pattern. Scale bars: A, D, H, J, L = 1 mm (B, I, K, M = 0.25 mm; E, F = 0.5 mm)." httpUri="https://zenodo.org/record/162386/files/figure.png" pageId="1" pageNumber="139">Fig. 4</figureCitation>
J, L) like in previous descriptions (
<bibRefCitation id="EF91F997FFE469741BF14D85FF0E38FA" author="Zeidler" pageId="1" pageNumber="139" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler, 2009, fig. 28</bibRefCitation>
). Uropods1–3 with external margins denticulated as well as both sides of endopods and exopods.
</paragraph>
</subSubSection>
<caption id="DF7FD4EEFFE769771FAB49D6FD893B00" httpUri="https://zenodo.org/record/162383/files/figure.png" pageId="2" pageNumber="140" targetBox="[151,1435,195,968]" targetPageId="2">
<paragraph id="8BBF8466FFE769771FAB49D6FD893B00" blockId="2.[151,1435,992,1045]" pageId="2" pageNumber="140">
<emphasis id="B9745874FFE769771FAB49D6FEAC3CE0" bold="true" box="[151,277,992,1014]" pageId="2" pageNumber="140">FIGURE 1.</emphasis>
<taxonomicName id="4C00FFE5FFE769771E2149D6FD603CE3" authority="Barnard, 1932" authorityName="Barnard" authorityYear="1932" box="[285,729,992,1014]" class="Malacostraca" family="Megalanceolidae" genus="Megalanceoloides" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="2" pageNumber="140" phylum="Arthropoda" rank="species" species="remipes">
<emphasis id="B9745874FFE769771E2149D6FD973CE3" box="[285,558,992,1014]" italics="true" pageId="2" pageNumber="140">Megalanceoloides remipes</emphasis>
(Barnard, 1932)
</taxonomicName>
ovigerous female from the Gulf of California photographed in vivo (2.5 mm), lateral view. Scale bar: 5 mm.
</paragraph>
</caption>
<caption id="DF7FD4EEFFE769771FAB4D80FE7538FE" httpUri="https://zenodo.org/record/162384/files/figure.png" pageId="2" pageNumber="140" targetBox="[150,1435,1094,1952]" targetPageId="2">
<paragraph id="8BBF8466FFE769771FAB4D80FE7538FE" blockId="2.[151,1436,1974,2027]" pageId="2" pageNumber="140">
<emphasis id="B9745874FFE769771FAB4D80FEAD38DE" bold="true" box="[151,276,1974,1996]" pageId="2" pageNumber="140">FIGURE 2.</emphasis>
<taxonomicName id="4C00FFE5FFE769771E274D80FD6E38D9" authority="Barnard, 1932" authorityName="Barnard" authorityYear="1932" box="[283,727,1974,1996]" class="Malacostraca" family="Megalanceolidae" genus="Megalanceoloides" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="2" pageNumber="140" phylum="Arthropoda" rank="species" species="remipes">
<emphasis id="B9745874FFE769771E274D80FD9238D9" box="[283,555,1974,1996]" italics="true" pageId="2" pageNumber="140">Megalanceoloides remipes</emphasis>
(Barnard, 1932)
</taxonomicName>
, ovigerous female from the Gulf of California photographed in vivo, ventral view. Scale bar: 5 mm.
</paragraph>
</caption>
<caption id="DF7FD4EEFFE669761FAB4D6DFC4D38FE" httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="3" pageNumber="141" targetBox="[187,1396,206,1855]" targetPageId="3">
<paragraph id="8BBF8466FFE669761FAB4D6DFC4D38FE" blockId="3.[151,1436,1883,2027]" pageId="3" pageNumber="141">
<emphasis id="B9745874FFE669761FAB4D6DFEAF3865" bold="true" box="[151,278,1883,1905]" pageId="3" pageNumber="141">FIGURE 3.</emphasis>
<taxonomicName id="4C00FFE5FFE669761E1C4D6DFD903864" box="[288,553,1883,1905]" class="Malacostraca" family="Megalanceolidae" genus="Megalanceoloides" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="3" pageNumber="141" phylum="Arthropoda" rank="species" species="remipe">
<emphasis id="B9745874FFE669761E1C4D6DFD903864" box="[288,553,1883,1905]" italics="true" pageId="3" pageNumber="141">Megalanceoloides remipe</emphasis>
</taxonomicName>
s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant2), mandible (md), first maxilla (mx1), second maxilla (mx2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D–F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H= 0.1 mm.
</paragraph>
</caption>
<caption id="DF7FD4EEFFE169711FAB4D2DFC683898" httpUri="https://zenodo.org/record/162386/files/figure.png" pageId="4" pageNumber="142" targetBox="[154,1419,206,1788]" targetPageId="4">
<paragraph id="8BBF8466FFE169711FAB4D2DFC683898" blockId="4.[151,1436,1819,1933]" pageId="4" pageNumber="142">
<emphasis id="B9745874FFE169711FAB4D2DFEAD3825" bold="true" box="[151,276,1819,1841]" pageId="4" pageNumber="142">FIGURE 4.</emphasis>
<taxonomicName id="4C00FFE5FFE169711E204D2DFD9A3824" box="[284,547,1819,1841]" class="Malacostraca" family="Megalanceolidae" genus="Megalanceoloides" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="4" pageNumber="142" phylum="Arthropoda" rank="species" species="remipe">
<emphasis id="B9745874FFE169711E204D2DFD9A3824" box="[284,547,1819,1841]" italics="true" pageId="4" pageNumber="142">Megalanceoloides remipe</emphasis>
</taxonomicName>
s (Barnard, 1932) from the Gulf of California. A–C. PII with details of distal segment and ornamentation of S6; D–F. PIII with details of S6; G. P IV S6 and S7; H. PV; I. PV detail of S6 and S7; J. PVI; K. same, detail of S6 and S7; L. PVII; M. same, detail of S6 and S7; N. UR1, dorsal view; O. UR2, dorsal view; P. same, ornamentation pattern. Scale bars: A, D, H, J, L = 1 mm (B, I, K, M = 0.25 mm; E, F = 0.5 mm).
</paragraph>
</caption>
<subSubSection id="C31AD7EDFFE069701FFB4AA1FB06391D" pageId="5" pageNumber="143" type="materials_examined">
<paragraph id="8BBF8466FFE069701FFB4AA1FDB83FED" blockId="5.[151,1437,151,1653]" pageId="5" pageNumber="143">
<emphasis id="B9745874FFE069701FFB4AA1FD3A3FA5" bold="true" box="[199,643,151,176]" pageId="5" pageNumber="143">Differences from previous specimens.</emphasis>
The size of our specimen (
<quantity id="4CF82983FFE069701C8B4AA1FBB13FA5" box="[951,1032,151,176]" metricMagnitude="-2" metricUnit="m" metricValue="2.5" pageId="5" pageNumber="143" unit="mm" value="25.0">25 mm</quantity>
) is intermediate between the female collected from the Indian Ocean (
<quantity id="4CF82983FFE069701D1C4A8AFDCC3FC1" box="[544,629,188,212]" metricMagnitude="-2" metricUnit="m" metricValue="1.9" pageId="5" pageNumber="143" unit="mm" value="19.0">19 mm</quantity>
) (
<bibRefCitation id="EF91F997FFE069701DB24A8AFCE43FC0" author="Vinogradov" box="[654,861,188,213]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov, 1964</bibRefCitation>
) and the
<typeStatus id="54BB3AC4FFE069701CF34A8BFC463FC0" box="[975,1023,189,213]" pageId="5" pageNumber="143">type</typeStatus>
specimen (
<quantity id="4CF82983FFE069701BBA4A8AFB623FC1" box="[1158,1243,188,212]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" pageId="5" pageNumber="143" unit="mm" value="40.0">40 mm</quantity>
) from the South Atlantic Ocean (
<bibRefCitation id="EF91F997FFE069701E724AE9FE4D3FED" author="Barnard" box="[334,500,223,248]" pageId="5" pageNumber="143" refString="Barnard, K. H. (1932) Amphipoda. Discovery Reports, 5, 1 - 326. http: // dx. doi. org / 10.5962 / bhl. part. 27664" type="journal article" year="1932">Barnard, 1932</bibRefCitation>
).
</paragraph>
<paragraph id="8BBF8466FFE069701FFB4B33FD733EE1" blockId="5.[151,1437,151,1653]" pageId="5" pageNumber="143">
In our specimen the A1 has a reticulate surface, with three distal segments;
<bibRefCitation id="EF91F997FFE069701B284B32FB793E09" author="Barnard" box="[1044,1216,260,285]" pageId="5" pageNumber="143" refString="Barnard, K. H. (1932) Amphipoda. Discovery Reports, 5, 1 - 326. http: // dx. doi. org / 10.5962 / bhl. part. 27664" type="journal article" year="1932">Barnard (1932)</bibRefCitation>
reported no minute apical joints in the
<typeStatus id="54BB3AC4FFE069701E4A4B11FE623E55" box="[374,475,295,320]" pageId="5" pageNumber="143" type="holotype">holotype</typeStatus>
, a character that was recently corrected by
<bibRefCitation id="EF91F997FFE069701CEE4B11FBCE3E55" author="Zeidler" box="[978,1143,295,320]" pageId="5" pageNumber="143" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler (2009)</bibRefCitation>
by mentioning that these small segments are subequal in length. The Californian (
<figureCitation id="133B98E3FFE069701C304B7AFCF43E71" box="[780,845,332,357]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="5" pageNumber="143">Fig. 3</figureCitation>
B,C) and the Indian Ocean (
<bibRefCitation id="EF91F997FFE069701BBA4B7AFA2D3E71" author="Vinogradov" box="[1158,1428,332,357]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964, fig. 4</bibRefCitation>
) specimens clearly have three subequally long apical segments. The terminal segment has five setae in the Indian Ocean specimen (
<bibRefCitation id="EF91F997FFE069701E5C4BA2FDD53EB9" author="Vinogradov" box="[352,620,404,429]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964, fig 4</bibRefCitation>
), but only two long setae in the
<collectingRegion id="49C44A84FFE069701CE04BA2FBF43EB8" box="[988,1101,404,429]" country="United States of America" name="California" pageId="5" pageNumber="143">California</collectingRegion>
specimen (
<figureCitation id="133B98E3FFE069701BEC4BA2FAAA3EB9" box="[1232,1299,404,429]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="5" pageNumber="143">Fig. 3</figureCitation>
B, C). Also, the penultimate A1 segment is unarmed in our specimen from
<collectingRegion id="49C44A84FFE069701C684B81FC7C3EC5" box="[852,965,439,464]" country="United States of America" name="California" pageId="5" pageNumber="143">California</collectingRegion>
(
<figureCitation id="133B98E3FFE069701CE94B81FBAE3EC5" box="[981,1047,439,464]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="5" pageNumber="143">Fig. 3</figureCitation>
C) and has at least two setae in the Indian Ocean specimen (
<bibRefCitation id="EF91F997FFE069701E904BEAFD043EE1" author="Vinogradov" box="[428,701,476,501]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964, fig. 4</bibRefCitation>
).
</paragraph>
<paragraph id="8BBF8466FFE069701FFB4BC9FCD73DBD" blockId="5.[151,1437,151,1653]" pageId="5" pageNumber="143">
Mandible palp. The terminal segment of the palp represents about the 50% of the appendage (
<bibRefCitation id="EF91F997FFE069701BEB4BC9FF703D29" author="Zeidler" pageId="5" pageNumber="143" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler 2009, fig. 28C</bibRefCitation>
), but some variation was found in the other specimens; it is slightly longer (55.1% of palp length) in the Indian Ocean specimen (
<bibRefCitation id="EF91F997FFE069701E5F4871FDC33D75" author="Vinogradov" box="[355,634,583,608]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964, fig. 4</bibRefCitation>
) and in the Pacific Ocean female (52.3%) (
<figureCitation id="133B98E3FFE069701B494871FB023D75" box="[1141,1211,583,608]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="5" pageNumber="143">
Fig.
<date id="FFBEA2A6FFE069701B90487EFB023D75" box="[1196,1211,584,608]" pageId="5" pageNumber="143">3</date>
</figureCitation>
I). Also, the second segment is hirsute in both the Indian (
<bibRefCitation id="EF91F997FFE069701D00485AFCF33D91" author="Vinogradov" box="[572,842,620,645]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964, fig. 4</bibRefCitation>
) and Pacific specimens (
<figureCitation id="133B98E3FFE069701B5D485AFB1A3D91" box="[1121,1187,620,645]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="5" pageNumber="143">
Fig.
<date id="FFBEA2A6FFE069701BA9485AFB1A3D91" box="[1173,1187,620,644]" pageId="5" pageNumber="143">3</date>
</figureCitation>
I), but appears to have a weaker ornamentation in the
<typeStatus id="54BB3AC4FFE069701ECD48B9FDEA3DBD" box="[497,595,655,680]" pageId="5" pageNumber="143" type="holotype">holotype</typeStatus>
(
<bibRefCitation id="EF91F997FFE069701D5D48B9FCD83DBD" author="Zeidler" box="[609,865,655,680]" pageId="5" pageNumber="143" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler 2009, fig. 28C</bibRefCitation>
).
</paragraph>
<paragraph id="8BBF8466FFE069701FFB4882FD763C48" blockId="5.[151,1437,151,1653]" pageId="5" pageNumber="143">
Based on the examination of the
<typeStatus id="54BB3AC4FFE069701D5C4882FD7B3DD8" box="[608,706,692,717]" pageId="5" pageNumber="143" type="holotype">holotype</typeStatus>
specimen and with reference to the Indian Ocean specimen described by
<bibRefCitation id="EF91F997FFE069701E1248E1FDBE3DE5" author="Vinogradov" box="[302,519,727,752]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov (1964)</bibRefCitation>
,
<bibRefCitation id="EF91F997FFE069701D2F48E1FD0E3DE5" author="Zeidler" box="[531,695,727,752]" pageId="5" pageNumber="143" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler (2009)</bibRefCitation>
stated that the second maxillae has four long apical setae and the inner lobe is armed with 3 setae (
<bibRefCitation id="EF91F997FFE069701D0C48CAFD753C01" author="Zeidler" box="[560,716,764,789]" pageId="5" pageNumber="143" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler 2009</bibRefCitation>
); in our specimen from
<collectingRegion id="49C44A84FFE069701CCF48CAFBDC3C00" box="[1011,1125,764,789]" country="United States of America" name="California" pageId="5" pageNumber="143">California</collectingRegion>
the outer lobe has also 4 subequally long apical setae plus other 4 subapical ones. Also, the inner lobe has 7 subequally long apical setae (
<figureCitation id="133B98E3FFE069701FA34972FF583C49" box="[159,225,836,861]" captionStart="FIGURE 3" captionStartId="3.[151,250,1883,1905]" captionTargetBox="[187,1396,206,1855]" captionTargetId="figure@3.[170,1408,193,1870]" captionTargetPageId="3" captionText="FIGURE 3. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A. antenna I; B, C. details of apical segments; D. antenna II, lateral view; E. details of proximal segments of antenna II, ventral view; F. same, lateral view; G, H. details of apical segments of antenna II; I. mandibular palp; J. mouthparts, ventral view including antenna II (ant 2), mandible (md), first maxilla (mx 1), second maxilla (mx 2), and maxilliped (mxp); K. second maxilla; L, M. PI and details of distal segments. Scale bars: A, D – F, I, J, L = 1 mm; B, G, K, M = 0.25 mm; C, H = 0.1 mm." httpUri="https://zenodo.org/record/162385/files/figure.png" pageId="5" pageNumber="143">Fig. 3</figureCitation>
K), thus differing from the other specimens.
</paragraph>
<paragraph id="8BBF8466FFE069701FFB4951FCF33B05" blockId="5.[151,1437,151,1653]" pageId="5" pageNumber="143">
The basis of pereopod 2 has two distal setae but these are relatively short, unequally long in the Indian Ocean specimen (
<bibRefCitation id="EF91F997FFE069701E2A49BAFD813CB1" author="Vinogradov" box="[278,568,908,933]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964, fig. 4</bibRefCitation>
) whereas these elements are equally long and longer in the Californian specimen (
<figureCitation id="133B98E3FFE069701E2F4999FEE03CDD" box="[275,345,943,968]" captionStart="FIGURE 4" captionStartId="4.[151,250,1819,1841]" captionTargetBox="[154,1419,206,1788]" captionTargetId="figure@4.[151,1436,193,1798]" captionTargetPageId="4" captionText="FIGURE 4. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A – C. PII with details of distal segment and ornamentation of S 6; D – F. PIII with details of S 6; G. P IV S 6 and S 7; H. PV; I. PV detail of S 6 and S 7; J. PVI; K. same, detail of S 6 and S 7; L. PVII; M. same, detail of S 6 and S 7; N. UR 1, dorsal view; O. UR 2, dorsal view; P. same, ornamentation pattern. Scale bars: A, D, H, J, L = 1 mm (B, I, K, M = 0.25 mm; E, F = 0.5 mm)." httpUri="https://zenodo.org/record/162386/files/figure.png" pageId="5" pageNumber="143">Fig. 4</figureCitation>
A). Pereopod 3 was not illustrated by
<bibRefCitation id="EF91F997FFE069701C2B4999FC483CDD" author="Vinogradov" box="[791,1009,943,968]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov (1964)</bibRefCitation>
, but in the
<typeStatus id="54BB3AC4FFE069701B464999FB653CDD" box="[1146,1244,943,968]" pageId="5" pageNumber="143" type="holotype">holotype</typeStatus>
the small apical dactylus arises from within a distal brush of short hair-like elements (
<bibRefCitation id="EF91F997FFE069701C9349E2FB263CF9" author="Zeidler" box="[943,1183,980,1005]" pageId="5" pageNumber="143" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler 2009, fig. 28</bibRefCitation>
); in the Pacific Ocean specimen the insertion area of the dactylus is naked (
<figureCitation id="133B98E3FFE069701DDB49C1FC923B05" box="[743,811,1015,1040]" captionStart="FIGURE 4" captionStartId="4.[151,250,1819,1841]" captionTargetBox="[154,1419,206,1788]" captionTargetId="figure@4.[151,1436,193,1798]" captionTargetPageId="4" captionText="FIGURE 4. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A – C. PII with details of distal segment and ornamentation of S 6; D – F. PIII with details of S 6; G. P IV S 6 and S 7; H. PV; I. PV detail of S 6 and S 7; J. PVI; K. same, detail of S 6 and S 7; L. PVII; M. same, detail of S 6 and S 7; N. UR 1, dorsal view; O. UR 2, dorsal view; P. same, ornamentation pattern. Scale bars: A, D, H, J, L = 1 mm (B, I, K, M = 0.25 mm; E, F = 0.5 mm)." httpUri="https://zenodo.org/record/162386/files/figure.png" pageId="5" pageNumber="143">Fig. 4</figureCitation>
F).
</paragraph>
<paragraph id="8BBF8466FFE069701FFB4E2BFC833B69" blockId="5.[151,1437,151,1653]" pageId="5" pageNumber="143">
In the Indian Ocean specimen the dactylus of pereopod 5 is very small, the terminal margin of the S6 is rounded (
<bibRefCitation id="EF91F997FFE069701E394E09FD983B4D" author="Vinogradov" box="[261,545,1087,1112]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964, fig. 5</bibRefCitation>
); in the Californian specimen the dactylus is more prominent and the distal margin of the S6 is relatively acute, not rounded (
<figureCitation id="133B98E3FFE069701DFE4E52FCBE3B69" box="[706,775,1124,1149]" captionStart="FIGURE 4" captionStartId="4.[151,250,1819,1841]" captionTargetBox="[154,1419,206,1788]" captionTargetId="figure@4.[151,1436,193,1798]" captionTargetPageId="4" captionText="FIGURE 4. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A – C. PII with details of distal segment and ornamentation of S 6; D – F. PIII with details of S 6; G. P IV S 6 and S 7; H. PV; I. PV detail of S 6 and S 7; J. PVI; K. same, detail of S 6 and S 7; L. PVII; M. same, detail of S 6 and S 7; N. UR 1, dorsal view; O. UR 2, dorsal view; P. same, ornamentation pattern. Scale bars: A, D, H, J, L = 1 mm (B, I, K, M = 0.25 mm; E, F = 0.5 mm)." httpUri="https://zenodo.org/record/162386/files/figure.png" pageId="5" pageNumber="143">Fig. 4</figureCitation>
H,I).
</paragraph>
<paragraph id="8BBF8466FFE069701FFB4EBFFC533A25" blockId="5.[151,1437,151,1653]" pageId="5" pageNumber="143">
In the Indian Ocean specimen the dactylus of pereopod 6 is simple, claw-like (
<bibRefCitation id="EF91F997FFE069701B4C4EB1FA343BB5" author="Vinogradov" box="[1136,1421,1159,1184]" pageId="5" pageNumber="143" refString="Vinogradov, M. E. (1964) Hyperiidea Physosomata from the northern part of the Indian Ocean. Trudy Instituta Okeanologii Akademiya Nauk SSSR, 65, 107 - 151. [In Russian]" type="journal article" year="1964">Vinogradov 1964, fig. 5</bibRefCitation>
), whereas it has also a small curved adjacent element in the specimen from
<collectingRegion id="49C44A84FFE069701CCF4E9AFBDD3BD0" box="[1011,1124,1196,1221]" country="United States of America" name="California" pageId="5" pageNumber="143">California</collectingRegion>
(
<figureCitation id="133B98E3FFE069701B4A4E9AFB053BD1" box="[1142,1212,1196,1221]" captionStart="FIGURE 4" captionStartId="4.[151,250,1819,1841]" captionTargetBox="[154,1419,206,1788]" captionTargetId="figure@4.[151,1436,193,1798]" captionTargetPageId="4" captionText="FIGURE 4. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A – C. PII with details of distal segment and ornamentation of S 6; D – F. PIII with details of S 6; G. P IV S 6 and S 7; H. PV; I. PV detail of S 6 and S 7; J. PVI; K. same, detail of S 6 and S 7; L. PVII; M. same, detail of S 6 and S 7; N. UR 1, dorsal view; O. UR 2, dorsal view; P. same, ornamentation pattern. Scale bars: A, D, H, J, L = 1 mm (B, I, K, M = 0.25 mm; E, F = 0.5 mm)." httpUri="https://zenodo.org/record/162386/files/figure.png" pageId="5" pageNumber="143">Fig. 4</figureCitation>
K). The dactylus of pereopod 7 has also some additional differences: in the
<typeStatus id="54BB3AC4FFE069701C2B4EF9FCC03BFD" box="[791,889,1231,1256]" pageId="5" pageNumber="143" type="holotype">holotype</typeStatus>
the small apical claw-like dactylus arises alone from a heavily hirsute surface (
<bibRefCitation id="EF91F997FFE069701EC74EC2FD523A19" author="Zeidler" box="[507,747,1268,1293]" pageId="5" pageNumber="143" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler 2009, fig. 28</bibRefCitation>
), but in the Pacific Ocean specimen the insertion area of the dactylus is naked and the dactylus has a few accompanying setae (
<figureCitation id="133B98E3FFE069701C424F21FC783A25" box="[894,961,1303,1328]" captionStart="FIGURE 4" captionStartId="4.[151,250,1819,1841]" captionTargetBox="[154,1419,206,1788]" captionTargetId="figure@4.[151,1436,193,1798]" captionTargetPageId="4" captionText="FIGURE 4. Megalanceoloides remipe s (Barnard, 1932) from the Gulf of California. A – C. PII with details of distal segment and ornamentation of S 6; D – F. PIII with details of S 6; G. P IV S 6 and S 7; H. PV; I. PV detail of S 6 and S 7; J. PVI; K. same, detail of S 6 and S 7; L. PVII; M. same, detail of S 6 and S 7; N. UR 1, dorsal view; O. UR 2, dorsal view; P. same, ornamentation pattern. Scale bars: A, D, H, J, L = 1 mm (B, I, K, M = 0.25 mm; E, F = 0.5 mm)." httpUri="https://zenodo.org/record/162386/files/figure.png" pageId="5" pageNumber="143">Fig. 4</figureCitation>
M).
</paragraph>
<paragraph id="8BBF8466FFE069701FFB4F0AFB06391D" blockId="5.[151,1437,151,1653]" pageId="5" pageNumber="143">
<emphasis id="B9745874FFE069701FFB4F0AFEFF3A40" bold="true" box="[199,326,1340,1365]" pageId="5" pageNumber="143">Symbiosis.</emphasis>
The amphipod was found grasping a siphonophore of the physonect genus
<taxonomicName id="4C00FFE5FFE069701BA84F0AFF613A6D" authority="Eschscholtz, 1829" authorityName="Eschscholtz" authorityYear="1829" class="Hydrozoa" family="Apolemiidae" genus="Apolemia" kingdom="Animalia" order="Siphonophorae" pageId="5" pageNumber="143" phylum="Cnidaria" rank="genus">
<emphasis id="B9745874FFE069701BA84F0AFAB93A41" box="[1172,1280,1340,1364]" italics="true" pageId="5" pageNumber="143">Apolemia</emphasis>
(Eschscholtz, 1829)
</taxonomicName>
with the dactyls of P VI and VII. The siphonophore was not identified but could be one of the species recently described for the zone (
<bibRefCitation id="EF91F997FFE069701D364FB2FD523A89" author="Siebert" box="[522,747,1412,1437]" pageId="5" pageNumber="143" refString="Siebert, S., Pugh, P. R., Haddock, S. H. D. &amp; Dunn, C. W. (2013) Re-evaluation of characters in Apolemiidae (Siphonophora), with description of two new species from Monterey Bay, California. Zootaxa, 3702 (3), 201 - 232. http: // dx. doi. org / 10.11646 / zootaxa. 3702.3.1" type="journal article" year="2013">Siebert et al., 2013</bibRefCitation>
). It was not collected because it was lost during the capture process as can be seen in the supplementary online video (http://w2.ecosur-qroo.mx/cna/rebeca/ D722%20D8%20Amphipod.mov). Digital photographs of
<taxonomicName id="4C00FFE5FFE069701C084FFBFC0D3AF1" box="[820,948,1485,1508]" class="Malacostraca" family="Megalanceolidae" genus="Megalanceoloides" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="5" pageNumber="143" phylum="Arthropoda" rank="species" species="remipes">
<emphasis id="B9745874FFE069701C084FFBFC0D3AF1" box="[820,948,1485,1508]" italics="true" pageId="5" pageNumber="143">M. remipes</emphasis>
</taxonomicName>
were taken when alive (
<figureCitation id="133B98E3FFE069701BEC4FFAFAA03AF1" box="[1232,1305,1484,1509]" captionStart="FIGURE 1" captionStartId="2.[151,250,992,1014]" captionTargetBox="[151,1435,195,968]" captionTargetId="figure@2.[151,1436,195,968]" captionTargetPageId="2" captionText="FIGURE 1. Megalanceoloides remipes (Barnard, 1932) ovigerous female from the Gulf of California photographed in vivo (2.5 mm), lateral view. Scale bar: 5 mm." httpUri="https://zenodo.org/record/162383/files/figure.png" pageId="5" pageNumber="143">Figs 1</figureCitation>
,
<figureCitation id="133B98E3FFE069701A154FFAFA803AF1" box="[1321,1337,1484,1508]" captionStart="FIGURE 2" captionStartId="2.[151,250,1974,1996]" captionTargetBox="[150,1435,1094,1952]" captionTargetId="figure@2.[150,1436,1094,1952]" captionTargetPageId="2" captionText="FIGURE 2. Megalanceoloides remipes (Barnard, 1932), ovigerous female from the Gulf of California photographed in vivo, ventral view. Scale bar: 5 mm." httpUri="https://zenodo.org/record/162384/files/figure.png" pageId="5" pageNumber="143">2</figureCitation>
). The
<emphasis id="B9745874FFE069701ABA4FFBFF7F3912" italics="true" pageId="5" pageNumber="143">in vivo</emphasis>
color of the hyperiid was very similar to some parts of the siphonophore (i.e. gastrozoids).
</paragraph>
</subSubSection>
<subSubSection id="C31AD7EDFFE069701FFB4C22FCB53961" pageId="5" pageNumber="143" type="distribution">
<paragraph id="8BBF8466FFE069701FFB4C22FCB53961" blockId="5.[151,1437,151,1653]" pageId="5" pageNumber="143">
<emphasis id="B9745874FFE069701FFB4C22FED93938" bold="true" box="[199,352,1556,1581]" pageId="5" pageNumber="143">Distribution.</emphasis>
This is the first record of this species from the Pacific Ocean. The only additional records are from the South Atlantic (
<geoCoordinate id="EE34E2A1FFE069701E924C0EFDB23945" box="[430,523,1592,1616]" direction="south" orientation="latitude" pageId="5" pageNumber="143" precision="925" value="-41.716667">41°43’S</geoCoordinate>
<geoCoordinate id="EE34E2A1FFE069701D2D4C0EFDC03945" box="[529,633,1592,1616]" direction="west" orientation="longitude" pageId="5" pageNumber="143" precision="925" value="-42.333332">42°20’W</geoCoordinate>
) and the Indian Ocean (
<geoCoordinate id="EE34E2A1FFE069701CB94C0EFC5C3945" box="[901,997,1592,1616]" direction="north" orientation="latitude" pageId="5" pageNumber="143" precision="925" value="3.1833334">03°11’N</geoCoordinate>
<geoCoordinate id="EE34E2A1FFE069701CD04C01FBF43945" box="[1004,1101,1591,1616]" direction="east" orientation="longitude" pageId="5" pageNumber="143" precision="925" value="67.03333">67°02’E</geoCoordinate>
); in both cases it was found at depth samplings from
<quantity id="4CF82983FFE069701EAE4C6AFE5E3961" box="[402,487,1628,1652]" metricMagnitude="3" metricUnit="m" metricValue="2.0" pageId="5" pageNumber="143" unit="m" value="2000.0">2000 m</quantity>
to surface (
<bibRefCitation id="EF91F997FFE069701D564C6AFCB83961" author="Zeidler" box="[618,769,1628,1653]" pageId="5" pageNumber="143" refString="Zeidler, W. (2009) A review of the hyperiidean amphipod superfamily Lanceoloidea Bowman &amp; Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea). Zootaxa, 2000,1 - 117." type="book chapter" year="2009">Zeidler 2009</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>
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