treatments-xml/data/BC/25/87/BC2587EAE0735D7B2BFFBE549E599309.xml

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<mods:title id="80FFC8F642C8A29E1018390CB10AC025">On Eulimnogammarus messerschmidtii, sp. n. (Amphipoda: Gammaridea) from Lake Baikal, Siberia, with redescription of E. cyanoides (Sowinsky) and remarks on taxonomy of the genus Eulimnogammarus</mods:title>
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<mods:namePart id="403DC61BDB60EF9C10508150277C0D7E">Bedulina, Daria S.</mods:namePart>
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<mods:namePart id="426F909B6EB3C57395F2D033EE277C9F">Madyarova, Ekaterina V.</mods:namePart>
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<mods:namePart id="0A8EFF4FEB2335F938847FB83F61DD17">Lubyaga, Yulia A.</mods:namePart>
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<treatment id="BC2587EAE0735D7B2BFFBE549E599309" ID-DOI="http://doi.org/10.5281/zenodo.6140228" ID-GBIF-Taxon="119512271" ID-Zenodo-Dep="6140228" LSID="urn:lsid:plazi:treatment:BC2587EAE0735D7B2BFFBE549E599309" httpUri="http://treatment.plazi.org/id/BC2587EAE0735D7B2BFFBE549E599309" lastPageId="23" lastPageNumber="541" pageId="12" pageNumber="530">
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<taxonomicName id="F38C4D7FE0735D602BFFBE549C5B9509" ID-CoL="3CBJP" authority="Bedulina et Tachteew" authorityName="Bedulina et Tachteew" box="[151,830,295,320]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="12" pageNumber="530" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0735D602BFFBE549D529509" bold="true" box="[151,567,295,320]" italics="true" pageId="12" pageNumber="530">Eulimnogammarus messerschmidtii</emphasis>
Bedulina et Tachteew
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, 
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<figureCitation id="ACB72A79E0735D602BFFBE3F9E4F952C" box="[151,298,332,357]" captionStart-0="FIGURE 8" captionStart-1="FIGURE 9" captionStart-2="FIGURE 10" captionStart-3="FIGURE 11" captionStart-4="FIGURE 12" captionStart-5="FIGURE 13" captionStart-6="FIGURE 14" captionStart-7="FIGURE 15" captionStartId-0="13.[151,250,1020,1042]" captionStartId-1="14.[151,250,1224,1246]" captionStartId-2="15.[151,250,1899,1921]" captionStartId-3="16.[151,250,1953,1975]" captionStartId-4="17.[151,250,1958,1980]" captionStartId-5="18.[151,250,1953,1975]" captionStartId-6="19.[151,250,1953,1975]" captionStartId-7="20.[151,250,1835,1857]" captionTargetBox-0="[151,1436,193,998]" captionTargetBox-2="[151,1436,193,1877]" captionTargetBox-3="[201,1385,193,1931]" captionTargetBox-4="[151,1436,193,1936]" captionTargetBox-5="[191,1362,193,1928]" captionTargetBox-6="[265,1321,193,1931]" captionTargetBox-7="[151,1436,193,1813]" captionTargetId-0="figure@13.[151,1436,193,999]" captionTargetId-2="figure@15.[151,1436,193,1877]" captionTargetId-3="figure@16.[201,1385,193,1932]" captionTargetId-4="figure@17.[151,1436,193,1937]" captionTargetId-5="figure@18.[191,1395,193,1932]" captionTargetId-6="figure@19.[265,1322,193,1932]" captionTargetId-7="figure@20.[151,1436,193,1813]" captionTargetPageId-0="13" captionTargetPageId-2="15" captionTargetPageId-3="16" captionTargetPageId-4="17" captionTargetPageId-5="18" captionTargetPageId-6="19" captionTargetPageId-7="20" captionText-0="FIGURE 8. Eulimnogammarus messerschmidtii sp. n., male, holotype (16.0 mm), from left side." captionText-1="FIGURE 9. Two color morphs of Eulimnogammarus messerschmidtii sp. n." captionText-2="FIGURE 10. Eulimnogammarus messerschmidtii sp. n., male, holotype; USD—partially schematically." captionText-3="FIGURE 11. Eulimnogammarus messerschmidtii sp. n., male, holotype." captionText-4="FIGURE 12. Eulimnogammarus messerschmidtii sp. n., male, holotype." captionText-5="FIGURE 13. Eulimnogammarus messerschmidtii sp. n., male, holotype." captionText-6="FIGURE 14. Eulimnogammarus messerschmidtii sp. n. Ur 1, Ur 2, Ur 3 — male, holotype; PMx 1 — female, paratype (15.2 mm)." captionText-7="FIGURE 15. Eulimnogammarus messerschmidtii sp. n., female, paratype (15.2 mm)." httpUri-0="https://zenodo.org/record/225135/files/figure.png" httpUri-2="https://zenodo.org/record/225136/files/figure.png" httpUri-3="https://zenodo.org/record/225137/files/figure.png" httpUri-4="https://zenodo.org/record/225138/files/figure.png" httpUri-5="https://zenodo.org/record/225139/files/figure.png" httpUri-6="https://zenodo.org/record/225140/files/figure.png" httpUri-7="https://zenodo.org/record/225141/files/figure.png" pageId="12" pageNumber="530">Figures 8–15</figureCitation>
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<taxonomicName id="F38C4D7FE0735D602BFFBEE79EA695E0" ID-CoL="3CBJ2" box="[151,451,404,425]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="12" pageNumber="530" phylum="Arthropoda" rank="species" species="cyanoides">
<emphasis id="06F8EAEEE0735D602BFFBEE79EA695E0" box="[151,451,404,425]" italics="true" pageId="12" pageNumber="530">Eulimnogammarus cyanoides</emphasis>
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(part.). 
<treatmentCitation id="B52D10EDE0735D60297CBEE79D9195E3" author="Bazikalova" box="[532,756,404,426]" page="209" pageId="12" pageNumber="530" year="1945">
<bibRefCitation id="501D4B0DE0735D60297CBEE79DA695E3" author="Bazikalova" box="[532,707,404,426]" pageId="12" pageNumber="530" refString="Bazikalova, A. Ya. (1945) Les Amphipodes du Baikal. Proceedings of the Baikal Limnological station USSR Academy of Sciences, 11, 1 - 440. [in Russian, with French summary]" type="journal article" year="1945">Bazikalova 1945</bibRefCitation>
: 209
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–210.
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specimens.
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:
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male, 16.0 mm, “red” morph., 
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12/1114, 
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, 
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, Lake Baikal, northern part near the delta of the Tyya River, the temporal island in the shoal, at a depth of 
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, pebbles and sand, macrophytes, sampling using a hand-net, temperature 15−20°C, pH 7.5 (Leg. D.S. Bedulina, T. Luckenbach). 
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locality: coordinates, 
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, 
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(see 
<figureCitation id="ACB72A79E0735D60284FBD319C0D9612" box="[807,872,578,603]" captionStart="FIGURE 1" captionStartId="2.[151,250,1744,1766]" captionTargetBox="[192,1394,265,1722]" captionTargetId="figure@2.[192,1395,265,1723]" captionTargetPageId="2" captionText="FIGURE 1. Schematic map of distribution of Eulimnogammarus messerschmidtii sp. n. on Lake Baikal. 1 — northern part of the Lake near the delta of the Tyya River; 2 — Bol’shoy Solontsovy cape, southern part; 3 — Olkhon Island, Kharin-Irgi Bay." httpUri="https://zenodo.org/record/225128/files/figure.png" pageId="12" pageNumber="530">Fig. 1</figureCitation>
, point 1).
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<typeStatus id="EB37885EE0735D602BAFBD149E599637" box="[199,316,615,638]" pageId="12" pageNumber="530" type="paratype">Paratypes</typeStatus>
:
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female, 15.0 mm, “red” morph., 
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1/88513, same sampling locality as the 
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; 
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(15.2 and 
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), “red” morph., 
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12/1115, same sampling locality as the 
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; male, 18.0 mm, “blue” morph., 
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12/1116, same sampling locality as the 
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; 
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(15.2 and 
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), “blue” morph., LIN 1131, same sampling locality as the 
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; 
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(12.0 and 
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), 
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(12.4, 12.5, 12.7 and 
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), 
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12/1117, 
<date id="4032103CE0735D602AECBD859D619746" box="[388,516,758,783]" pageId="12" pageNumber="530" value="2006-06-25">25.06.2006</date>
, 
<collectingCountry id="4C9B766CE0735D60297CBD859D049746" box="[532,609,758,783]" name="Russia" pageId="12" pageNumber="530">Russia</collectingCountry>
, Baikal Lake, Cape Bol’shoy Solontsovy, southern part, 
<geoCoordinate id="51B8503BE0735D602E68BD859AFD9747" box="[1280,1432,758,783]" direction="north" orientation="latitude" pageId="12" pageNumber="530" precision="15" value="54.173058">54°10’23” N</geoCoordinate>
, 
<geoCoordinate id="51B8503BE0735D602BFFBC689E52977B" box="[151,311,795,819]" direction="east" orientation="longitude" pageId="12" pageNumber="530" precision="15" value="108.35027">108°21’01” E</geoCoordinate>
(see 
<figureCitation id="ACB72A79E0735D602A15BC699EA1977A" box="[381,452,794,819]" captionStart="FIGURE 1" captionStartId="2.[151,250,1744,1766]" captionTargetBox="[192,1394,265,1722]" captionTargetId="figure@2.[192,1395,265,1723]" captionTargetPageId="2" captionText="FIGURE 1. Schematic map of distribution of Eulimnogammarus messerschmidtii sp. n. on Lake Baikal. 1 — northern part of the Lake near the delta of the Tyya River; 2 — Bol’shoy Solontsovy cape, southern part; 3 — Olkhon Island, Kharin-Irgi Bay." httpUri="https://zenodo.org/record/225128/files/figure.png" pageId="12" pageNumber="530">Fig. 1</figureCitation>
, point 2), water edge, stones, temperature 5.5°C, sampling using a hand net (Leg. V.V. Takhteev, D.S. Bedulina); male, 
<quantity id="F3749B19E0735D602950BC4D9DF8971F" box="[568,669,830,855]" metricMagnitude="-2" metricUnit="m" metricValue="1.25" pageId="12" pageNumber="530" unit="mm" value="12.5">12.5 mm</quantity>
, 
<specimenCount id="228AFD75E0735D6029C0BC4C9C71971E" box="[680,788,830,855]" pageId="12" pageNumber="530" type="female">3 females</specimenCount>
(12.7, 13.0 and 
<quantity id="F3749B19E0735D6028A0BC4C9B4A971E" box="[968,1071,831,855]" metricMagnitude="-2" metricUnit="m" metricValue="1.39" pageId="12" pageNumber="530" unit="mm" value="13.9">13.9 mm</quantity>
), 
<collectionCode id="529DAE39E0735D602F2ABC4C9B1A971F" box="[1090,1151,831,854]" httpUri="http://grbio.org/cool/8syf-d21i" name="Museum für Naturkunde Berlin (Zoological Collections)" pageId="12" pageNumber="530">ZMB</collectionCode>
28096, same sample site; 
<specimenCount id="228AFD75E0735D602BFFBC109F959732" box="[151,240,866,891]" pageId="12" pageNumber="530" type="male">2 males</specimenCount>
(13.0 and 
<quantity id="F3749B19E0735D602A19BC109EB99732" box="[369,476,867,891]" metricMagnitude="-2" metricUnit="m" metricValue="1.43" pageId="12" pageNumber="530" unit="mm" value="14.3">14.3 mm</quantity>
), 
<specimenCount id="228AFD75E0735D602A99BC109D059732" box="[497,608,866,891]" pageId="12" pageNumber="530" type="female">2 females</specimenCount>
(12.3 and 
<quantity id="F3749B19E0735D602989BC109C299732" box="[737,844,867,891]" metricMagnitude="-2" metricUnit="m" metricValue="1.34" pageId="12" pageNumber="530" unit="mm" value="13.4">13.4 mm</quantity>
), LIN 1132, same sampling site; male, 
<quantity id="F3749B19E0735D602E7FBC109AE59733" box="[1303,1408,867,891]" metricMagnitude="-2" metricUnit="m" metricValue="1.38" pageId="12" pageNumber="530" unit="mm" value="13.8">13.8 mm</quantity>
, 
<specimenCount id="228AFD75E0735D602EE6BC109F8B97D6" pageId="12" pageNumber="530" type="female">3 females</specimenCount>
(12.1, 13.3 and 
<quantity id="F3749B19E0735D602ADBBCF49D7B97D6" box="[435,542,903,927]" metricMagnitude="-2" metricUnit="m" metricValue="1.33" pageId="12" pageNumber="530" unit="mm" value="13.3">13.3 mm</quantity>
), 
<collectionCode id="529DAE39E0735D60295DBCF49D1697D7" box="[565,627,903,926]" httpUri="http://grbio.org/cool/jqaq-6vk8" name="Zoologisches Museum der Universitaet Kiel" pageId="12" pageNumber="530">ZMK</collectionCode>
246 (Inventory book of the stock collection of invertebrates, without insects) 96 (database of 
<typeStatus id="EB37885EE0735D602AC3BCD89EBE978A" box="[427,475,939,963]" pageId="12" pageNumber="530">type</typeStatus>
materials of invertebrates, without insects), same sample site; 
<specimenCount id="228AFD75E0735D602FCEBCD89B98978A" box="[1190,1277,938,963]" pageId="12" pageNumber="530" type="male">2 males</specimenCount>
(8.7 and 
<quantity id="F3749B19E0735D602E03BCD89FA297AE" metricMagnitude="-2" metricUnit="m" metricValue="1.28" pageId="12" pageNumber="530" unit="mm" value="12.8">12.8 mm</quantity>
), female, 
<quantity id="F3749B19E0735D602A5CBCBD9EFF97AF" box="[308,410,974,999]" metricMagnitude="-2" metricUnit="m" metricValue="1.52" pageId="12" pageNumber="530" unit="mm" value="15.2">15.2 mm</quantity>
, 
<collectionCode id="529DAE39E0735D602ACDBCBC9EB797AE" box="[421,466,975,999]" httpUri="http://grbio.org/cool/jgjv-qdg3" name="Indiana State University" pageId="12" pageNumber="530">ISU</collectionCode>
12/1118, 
<date id="4032103CE0735D602929BCBD9DA497AE" box="[577,705,974,999]" pageId="12" pageNumber="530" value="2002-06-22">22.06.2002</date>
, 
<collectingCountry id="4C9B766CE0735D6029A5BCBD9C7F97AE" box="[717,794,974,999]" name="Russia" pageId="12" pageNumber="530">Russia</collectingCountry>
, Baikal Lake, Olkhon Island, Kharin-Irgi Bay, 
<geoCoordinate id="51B8503BE0735D602E4FBCBD9FCB9043" direction="north" orientation="latitude" pageId="12" pageNumber="530" precision="15" value="53.069443">53°04’10” N</geoCoordinate>
, 
<geoCoordinate id="51B8503BE0735D602BD4BC819E3F9043" box="[188,346,1010,1035]" direction="east" orientation="longitude" pageId="12" pageNumber="530" precision="15" value="106.93111">106°55’52” E</geoCoordinate>
(see 
<figureCitation id="ACB72A79E0735D602AF4BC819E859042" box="[412,480,1010,1035]" captionStart="FIGURE 1" captionStartId="2.[151,250,1744,1766]" captionTargetBox="[192,1394,265,1722]" captionTargetId="figure@2.[192,1395,265,1723]" captionTargetPageId="2" captionText="FIGURE 1. Schematic map of distribution of Eulimnogammarus messerschmidtii sp. n. on Lake Baikal. 1 — northern part of the Lake near the delta of the Tyya River; 2 — Bol’shoy Solontsovy cape, southern part; 3 — Olkhon Island, Kharin-Irgi Bay." httpUri="https://zenodo.org/record/225128/files/figure.png" pageId="12" pageNumber="530">Fig. 1</figureCitation>
, point 3), water edge (at a depth of 
<quantity id="F3749B19E0735D6028E5BC809C939042" box="[909,1014,1011,1035]" metricMagnitude="-1" metricUnit="m" metricValue="1.5" metricValueMax="3.0" metricValueMin="0.0" pageId="12" pageNumber="530" unit="cm" value="15.0" valueMax="30.0" valueMin="0.0">0−30 cm</quantity>
), sampling using a hand net, stones, temperature 7.5°C (Leg. E.B. Govorukhina, V.V. Takhteev); male, 
<quantity id="F3749B19E0735D6028E3BB649C949067" box="[907,1009,1047,1071]" metricMagnitude="-2" metricUnit="m" metricValue="1.14" pageId="12" pageNumber="530" unit="mm" value="11.4">11.4 mm</quantity>
, 
<specimenCount id="228AFD75E0735D602896BB649B099066" box="[1022,1132,1046,1071]" pageId="12" pageNumber="530" type="female">3 females</specimenCount>
(11.0, 11.4 and 
<quantity id="F3749B19E0735D602E4FBB649AF59066" box="[1319,1424,1047,1071]" metricMagnitude="-2" metricUnit="m" metricValue="1.33" pageId="12" pageNumber="530" unit="mm" value="13.3">13.3 mm</quantity>
), 
<collectionCode id="529DAE39E0735D602BFFBB489FA3901B" box="[151,198,1083,1106]" httpUri="http://grbio.org/cool/z2y8-2jfr" name="Russian Academy of Sciences, Zoological Institute, Zoological Museum" pageId="12" pageNumber="530">ZIN</collectionCode>
2/88514, same sample site; 
<specimenCount id="228AFD75E0735D60296FBB489D3B901A" box="[519,606,1082,1107]" pageId="12" pageNumber="530" type="male">2 males</specimenCount>
(9.2 and 
<quantity id="F3749B19E0735D6029A3BB489C51901A" box="[715,820,1083,1107]" metricMagnitude="-2" metricUnit="m" metricValue="1.0699999999999998" pageId="12" pageNumber="530" unit="mm" value="10.7">10.7 mm</quantity>
), 
<specimenCount id="228AFD75E0735D602820BB489CD1901A" box="[840,948,1082,1107]" pageId="12" pageNumber="530" type="female">2 females</specimenCount>
(13.2 and 
<quantity id="F3749B19E0735D602F47BB499BFD901A" box="[1071,1176,1082,1107]" metricMagnitude="-2" metricUnit="m" metricValue="1.35" pageId="12" pageNumber="530" unit="mm" value="13.5">13.5 mm</quantity>
), 
<collectionCode id="529DAE39E0735D602FC4BB489B8F901B" box="[1196,1258,1083,1106]" httpUri="http://grbio.org/cool/kdnf-0379" name="Zoologisches Museum Hamburg" pageId="12" pageNumber="530">ZMH</collectionCode>
<accessionNumber id="2BDFAB1FE0735D602F9ABB489A32901A" box="[1266,1367,1082,1107]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/K43660" pageId="12" pageNumber="530" type="EnaNcbi">K 43660</accessionNumber>
, same sample site; male, 
<quantity id="F3749B19E0735D602A0FBB2C9EA9903F" box="[359,460,1119,1143]" metricMagnitude="-2" metricUnit="m" metricValue="1.17" pageId="12" pageNumber="530" unit="mm" value="11.7">11.7 mm</quantity>
, female, 
<quantity id="F3749B19E0735D60295ABB2C9DFD903F" box="[562,664,1119,1143]" metricMagnitude="-2" metricUnit="m" metricValue="1.01" pageId="12" pageNumber="530" unit="mm" value="10.1">10.1 mm</quantity>
, 
<collectionCode id="529DAE39E0735D6029CCBB2C9D87903F" box="[676,738,1119,1142]" httpUri="http://grbio.org/cool/2vmj-fp0v" name="Finnish Museum of Natural History" pageId="12" pageNumber="530">MZH</collectionCode>
125.886, same sample site.
</paragraph>
<paragraph id="343336FCE0735D602BAFBBF19BB590AA" blockId="12.[151,1437,470,1971]" pageId="12" pageNumber="530">
<emphasis id="06F8EAEEE0735D602BAFBBF19E9E90D2" bold="true" box="[199,507,1154,1179]" pageId="12" pageNumber="530">Other material examined.</emphasis>
For the population analysis, an additional sample of 
<specimenCount id="228AFD75E0735D602F25BBF19B9690D2" box="[1101,1267,1154,1179]" pageId="12" pageNumber="530" type="generic">165 specimens</specimenCount>
collected from the sampling point 3 (Olkhon, Kharin-Irgi Bay, same date of collection) was used. Additionally, a pool of all 
<typeStatus id="EB37885EE0735D602BFFBBB89E6790AA" box="[151,258,1227,1251]" pageId="12" pageNumber="530" type="paratype">paratypes</typeStatus>
(
<specimenCount id="228AFD75E0735D602A7ABBB89ECE90AA" box="[274,427,1226,1251]" pageId="12" pageNumber="530" type="generic">18 specimens</specimenCount>
) from the sampling point 3 (Cape Bol’shoy Solontsovy) was examined.
</paragraph>
</subSubSection>
<subSubSection id="7C966577E0735D602BAFBB9D9DF39196" pageId="12" pageNumber="530" type="diagnosis">
<paragraph id="343336FCE0735D602BAFBB9D9DF39196" blockId="12.[151,1437,470,1971]" pageId="12" pageNumber="530">
<emphasis id="06F8EAEEE0735D602BAFBB9D9E24914E" bold="true" box="[199,321,1262,1287]" pageId="12" pageNumber="530">Diagnosis.</emphasis>
All characteristics should be considered together for species identification. Spines only on four last body segments, being combined with setae. Eyes narrow and curved. Flagella of antennae 1 and 2 with bunches of long, dense setae. Basal article of peduncle of antenna 1 without thorns on inferior-anterior angle. Antenna 1 not exceeding half of body length. Basis of pereopod 7 with poorly developed rectangular lobe on its inferior-posterior margin. Uropod 3 with dense simple setae, without plumose setae; outer ramus with small second article. 
<taxonomicName id="F38C4D7FE0735D602E3ABA0D9AF991DE" box="[1362,1436,1406,1431]" class="Maxillopoda" family="Telsidae" genus="Telson" kingdom="Animalia" order="Poecilostomatoida" pageId="12" pageNumber="538" phylum="Arthropoda" rank="genus">Telson</taxonomicName>
lobes bearing only apical spines and no lateral spines. Body length of adult specimens ranging from 7.5 to 18.0 mm in males and from 8.0 to 
<quantity id="F3749B19E0735D602AC7BAB59D769197" box="[431,531,1478,1503]" metricMagnitude="-2" metricUnit="m" metricValue="1.75" pageId="12" pageNumber="530" unit="mm" value="17.5">17.5 mm</quantity>
in females.
</paragraph>
</subSubSection>
<subSubSection id="7C966577E0735D792BAFBA999D3D9219" lastPageId="21" lastPageNumber="539" pageId="12" pageNumber="530" type="description">
<paragraph id="343336FCE0735D602BAFBA999AFC9202" blockId="12.[151,1437,470,1971]" pageId="12" pageNumber="530">
<emphasis id="06F8EAEEE0735D602BAFBA999E3C924A" bold="true" box="[199,345,1514,1539]" pageId="12" pageNumber="530">Description.</emphasis>
<emphasis id="06F8EAEEE0735D602A37BA999EC7924A" box="[351,418,1514,1539]" italics="true" pageId="12" pageNumber="530">Male:</emphasis>
Body smooth and 
<taxonomicName id="F38C4D7FE0735D60291EBA989D97924B" box="[630,754,1515,1538]" class="Malacostraca" family="Gammaridae" genus="Gammarus" kingdom="Animalia" order="Amphipoda" pageId="12" pageNumber="530" phylum="Arthropoda" rank="genus">
<emphasis id="06F8EAEEE0735D60291EBA989D97924B" box="[630,754,1515,1538]" italics="true" pageId="12" pageNumber="530">Gammarus</emphasis>
</taxonomicName>
-like: compact, lateral narrowed. 
<emphasis id="06F8EAEEE0735D602F0FBA999BD5924A" box="[1127,1200,1514,1539]" italics="true" pageId="12" pageNumber="530">Pleon.</emphasis>
Segment 1 bare, and segment 2 bearing only one pair of setae on posterior margin. Segment 3 with 3−4 paired rows of spines on dorsal surface, and sparse setae, quite long in two of the groups and sometimes protruding to the middle of next segment.
</paragraph>
<paragraph id="343336FCE0735D602BAFB9249AE392DA" blockId="12.[151,1437,470,1971]" pageId="12" pageNumber="530">
<emphasis id="06F8EAEEE0735D602BAFB9249E519227" box="[199,308,1623,1646]" italics="true" pageId="12" pageNumber="530">Urosome.</emphasis>
All three segments bearing two paired groups of spines (two median and two lateral); first and second segments with sparse, but quite long setae not protruding past the posterior margin of following segment.
</paragraph>
<paragraph id="343336FCE0735D602BAFB9ED9F8692B6" blockId="12.[151,1437,470,1971]" pageId="12" pageNumber="530">
<emphasis id="06F8EAEEE0735D602BAFB9ED9E6E92FE" box="[199,267,1694,1719]" italics="true" pageId="12" pageNumber="530">Head.</emphasis>
Head slightly convex dorsally, with very short rostrum. Interantennal lobes with indistinct notch. Eyes black, narrow and curved (narrow-reniform), and their vertical diameter exceeding horizontal diameter by almost 3-fold.
</paragraph>
<paragraph id="343336FCE0735D602BAFB8789B2193FA" blockId="12.[151,1437,470,1971]" pageId="12" pageNumber="530">
<emphasis id="06F8EAEEE0735D602BAFB8789E5C936A" box="[199,313,1803,1827]" italics="true" pageId="12" pageNumber="530">Antenna 1</emphasis>
slightly shorter than 1/2 of body length and slightly longer than 
<emphasis id="06F8EAEEE0735D602F67B87F9BE0936A" box="[1039,1157,1803,1827]" italics="true" pageId="12" pageNumber="530">antenna 2.</emphasis>
Basal peduncular article slightly shorter than head and without spines on its inferior-anterior margin. Distal half of inferior margin bearing dense setae, elongated at the end of article. Peduncle article 2 slightly longer than basal, whereas article 3 is 0,7 times as long as article 2. Both bearing rows of bunches of long setae on their inferior margin. Primary flagellum with 20−36 short articles; accessory flagellum with 3−5 and in rare cases, 7 articles.
</paragraph>
<caption id="60F36674E0725D612BFFBC8F9B16905B" box="[151,1139,1020,1042]" httpUri="https://zenodo.org/record/225135/files/figure.png" pageId="13" pageNumber="531" targetBox="[151,1436,193,998]" targetPageId="13">
<paragraph id="343336FCE0725D612BFFBC8F9B16905B" blockId="13.[151,1139,1020,1042]" box="[151,1139,1020,1042]" pageId="13" pageNumber="531">
<emphasis id="06F8EAEEE0725D612BFFBC8F9E779058" bold="true" box="[151,274,1020,1042]" pageId="13" pageNumber="531">FIGURE 8.</emphasis>
<taxonomicName id="F38C4D7FE0725D612A71BC8F9DE69058" box="[281,643,1020,1041]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="13" pageNumber="531" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0725D612A71BC8F9DE69058" box="[281,643,1020,1041]" italics="true" pageId="13" pageNumber="531">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE0725D6129E1BC8E9DA7905B" bold="true" box="[649,706,1021,1042]" pageId="13" pageNumber="531">
<taxonomicNameLabel id="1DCB5795E0725D6129E1BC8E9DA7905B" box="[649,706,1021,1042]" pageId="13" pageNumber="531" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
, male, holotype (16.0 mm), from left side.
</paragraph>
</caption>
<paragraph id="343336FCE0725D612BAFBB499C3B90F7" blockId="13.[151,1437,1081,1970]" pageId="13" pageNumber="531">
<emphasis id="06F8EAEEE0725D612BAFBB499E27901B" box="[199,322,1082,1106]" italics="true" pageId="13" pageNumber="531">Antenna 2.</emphasis>
Article 1 swollen, with a bunch of setae; antennal cone markedly shorter than third article of the peduncle; article 3 bearing a bunch of setae of varying lengths on its inferior-anterior angle. Article 4 slightly shorter than article 5, and both (in addition to the flagellum) bearing bunches of long, dense setae on their inferior margin. Flagella comprise up to 10−13 articles; calceoli absent.
</paragraph>
<paragraph id="343336FCE0725D612BAFBBBA9D369107" blockId="13.[151,1437,1081,1970]" pageId="13" pageNumber="531">
<emphasis id="06F8EAEEE0725D612BAFBBBA9E5F90AB" box="[199,314,1225,1250]" italics="true" pageId="13" pageNumber="531">Mandible.</emphasis>
Incisor with 5 long teeth. Dental row with 8 setae. Palp elongated; article 1 bearing a group of setae; article 2 narrow, with long, dense setae (D2-setae, after 
<bibRefCitation id="501D4B0DE0725D612862BB9D9B7D914F" author="Lowry" box="[778,1048,1261,1286]" pageId="13" pageNumber="531" refString="Lowry, J. K. &amp; Stoddart, H. E. (1993) Crustacea Amphipoda: Lysianassoids from Philippine and Indonesian waters, in: A. Crosnier (Ed.) Resultats des campagnes MUSORSTOM. Vol. 10. Memoires du Museum national d'Histoire naturelle A, No. 156, 55 - 109." type="book chapter" year="1993">Lowry &amp; Stoddart 1993</bibRefCitation>
) on its distal half. Terminal article lanceolate, with numerous A3- and E3-setae; D3-setae bunch 2/3 of article length; setae equal and gradually decreasing in length towards distal end.
</paragraph>
<paragraph id="343336FCE0725D612BAFBA2A9E259194" blockId="13.[151,1437,1081,1970]" pageId="13" pageNumber="531">
<emphasis id="06F8EAEEE0725D612BAFBA2A9E59913B" box="[199,316,1369,1394]" italics="true" pageId="13" pageNumber="531">Maxilla 1.</emphasis>
Outer plate containing 11 oblique-pectinate spine-teeth. Inner plate wide, bearing 17−18 plumose setae. Palp slightly narrower and longer than outer plate (together with spines). 
<emphasis id="06F8EAEEE0725D612F54BA0E9BD791DF" box="[1084,1202,1405,1430]" italics="true" pageId="13" pageNumber="531">Maxilla 2.</emphasis>
Outer plate slightly longer than inner plate, and both plates with dense setae on their distal ends. Inner plate bearing 17 plumose setae in oblique row.
</paragraph>
<paragraph id="343336FCE0725D612BAFBA9A9A239227" blockId="13.[151,1437,1081,1970]" pageId="13" pageNumber="531">
<emphasis id="06F8EAEEE0725D612BAFBA9A9E25924B" box="[199,320,1513,1538]" italics="true" pageId="13" pageNumber="531">Maxilliped</emphasis>
. Outer plate exceeding 2/3 of middle article of palp, and distal end widening and markedly wider than inner plate. Distal end of inner plate narrowing, trapeziform and bearing 3 large tapering teeth and several small, indistinct teeth at its distal end. Palp with dense groups of setae on its middle and terminal articles; middle article quite wide, whereas terminal article narrower than middle; dactylus 2/3 of length of terminal article.
</paragraph>
<paragraph id="343336FCE0725D612BAFB90A9EC49293" blockId="13.[151,1437,1081,1970]" pageId="13" pageNumber="531">
<emphasis id="06F8EAEEE0725D612BAFB90A9E3292DB" box="[199,343,1657,1682]" italics="true" pageId="13" pageNumber="531">Coxal plates</emphasis>
with smooth rounded anterior angles, bearing single short setae on margins and on outer side. Coxal plate 1 shorter than coxal plates 2−4. Coxal plates 1−3 linguiform, and coxa 4 with obtuse angle on inferior 1/3 of posterior margin.
</paragraph>
<paragraph id="343336FCE0725D612BAFB9969DFD9323" blockId="13.[151,1437,1081,1970]" pageId="13" pageNumber="531">
<emphasis id="06F8EAEEE0725D612BAFB9969E0092B7" box="[199,357,1765,1790]" italics="true" pageId="13" pageNumber="531">Gnathopod 1.</emphasis>
Propodus narrow and amygdaline, shorter or equal to head length and 1/3 times as long as propodus of gnathopod 2; palmar margin with weak notch, gradually aligning to inferior. Inferior margin bearing 6 bunches of setae, all of which, with exception of first bunch, combined with spines increasing in length from proximal to distal. Dactylus curved markedly.
</paragraph>
<paragraph id="343336FCE0725D612BAFB8069CE993F8" blockId="13.[151,1437,1081,1970]" pageId="13" pageNumber="531">
<emphasis id="06F8EAEEE0725D612BAFB8069E0493C7" box="[199,353,1909,1934]" italics="true" pageId="13" pageNumber="531">Gnathopod 2.</emphasis>
Propodus with parallel superior and inferior margins, and palmar margin delimited inferiorly by an angle; inferior margin bearing numerous bunches of dense setae.
</paragraph>
<caption id="60F36674E0715D622BFFBBBB9CF89094" box="[151,925,1224,1246]" pageId="14" pageNumber="532">
<paragraph id="343336FCE0715D622BFFBBBB9CF89094" blockId="14.[151,925,1224,1246]" box="[151,925,1224,1246]" pageId="14" pageNumber="532">
<emphasis id="06F8EAEEE0715D622BFFBBBB9E779094" bold="true" box="[151,274,1224,1246]" pageId="14" pageNumber="532">FIGURE 9.</emphasis>
Two color morphs of 
<taxonomicName id="F38C4D7FE0715D622A9CBBBB9C3B9094" box="[500,862,1224,1245]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="14" pageNumber="532" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0715D622A9CBBBB9C3B9094" box="[500,862,1224,1245]" italics="true" pageId="14" pageNumber="532">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<taxonomicNameLabel id="1DCB5795E0715D62280CBBBB9CF89094" box="[868,925,1224,1245]" pageId="14" pageNumber="532" rank="species">sp. n.</taxonomicNameLabel>
</paragraph>
</caption>
<paragraph id="343336FCE0715D622BAFBA799C599122" blockId="14.[151,1436,1290,2035]" pageId="14" pageNumber="532">
<emphasis id="06F8EAEEE0715D622BAFBA799EF2916A" box="[199,407,1290,1315]" italics="true" pageId="14" pageNumber="532">Pereopods 3 and 4</emphasis>
almost equal in length, and their bases curved. Carpi and propodi almost equal in length and slightly shorter than meri. Articles with bunches of spines and setae; longest setae on posterior margins of meri and carpi. Dactyli short and thick, and their tip curved markedly.
</paragraph>
<paragraph id="343336FCE0715D622BAFBA059BF89256" blockId="14.[151,1436,1290,2035]" pageId="14" pageNumber="532">
<emphasis id="06F8EAEEE0715D622BAFBA059E1E91C7" box="[199,379,1398,1423]" italics="true" pageId="14" pageNumber="532">Pereopods 5−7.</emphasis>
Pereopod 6 almost a third longer than pereopod 5 and slightly shorter than pereopod 7. 
<emphasis id="06F8EAEEE0715D622E37BA0B9E5091FB" italics="true" pageId="14" pageNumber="532">Basis of pereopod 5</emphasis>
wide (its length exceeding width by 1/4), posterior margin almost straight, and its inferior portion forming rather wide and slightly declining lobe. 
<emphasis id="06F8EAEEE0715D6229A0BAB39CCA919E" box="[712,943,1470,1495]" italics="true" pageId="14" pageNumber="532">Basis of pereopod 6</emphasis>
tapering distally; posterior margin slightly excavated and with small rectangular lobe on the inferior margin. 
<emphasis id="06F8EAEEE0715D6228C8BA979BEF91B3" box="[928,1162,1506,1531]" italics="true" pageId="14" pageNumber="532">Basis of pereopod 7</emphasis>
twice as long as wide; posterior margin tapering in the inferior one-third and with more indistinct rectangular lobe.
</paragraph>
<paragraph id="343336FCE0715D622BAFB9599D0F922E" blockId="14.[151,1436,1290,2035]" pageId="14" pageNumber="532">
Posterior margins of bases 5−7 with slightly elongated setae (thus, this species’ morphology is different from the majority of other 
<taxonomicName id="F38C4D7FE0715D622AEDB93D9D3F922E" box="[389,602,1614,1639]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="14" pageNumber="532" phylum="Arthropoda" rank="genus">
<emphasis id="06F8EAEEE0715D622AEDB93D9D3F922E" box="[389,602,1614,1639]" italics="true" pageId="14" pageNumber="532">Eulimnogammarus</emphasis>
</taxonomicName>
).
</paragraph>
<paragraph id="343336FCE0715D622BAFB9079D0C92E6" blockId="14.[151,1436,1290,2035]" pageId="14" pageNumber="532">
<emphasis id="06F8EAEEE0715D622BAFB9079F9B92C2" box="[199,254,1652,1675]" italics="true" pageId="14" pageNumber="532">Meri</emphasis>
and 
<emphasis id="06F8EAEEE0715D622A51B9079E1192C2" box="[313,372,1652,1675]" italics="true" pageId="14" pageNumber="532">carpi</emphasis>
equal in length, and 
<emphasis id="06F8EAEEE0715D622905B9019DA192C2" box="[621,708,1650,1675]" italics="true" pageId="14" pageNumber="532">propodi</emphasis>
slightly longer, all bearing groups of spines and setae. 
<emphasis id="06F8EAEEE0715D622E21B9019AFE92C2" box="[1353,1435,1650,1675]" italics="true" pageId="14" pageNumber="532">Dactyli</emphasis>
short and thick, with strongly curved tips.
</paragraph>
<paragraph id="343336FCE0715D622BAFB9C99D7B9352" blockId="14.[151,1436,1290,2035]" pageId="14" pageNumber="532">
<emphasis id="06F8EAEEE0715D622BAFB9C99E1D929A" box="[199,376,1722,1747]" italics="true" pageId="14" pageNumber="532">Epimeral plates</emphasis>
of first pleonal segment small; on segment 2 with dulled inferior-posterior angle; on segment 3 wide and with a row of small spines along their inferior margins. Inferior-posterior angle of epimeral plates almost straight or slightly sharp or obtuse.
</paragraph>
<paragraph id="343336FCE0715D622BAFB8559A1493CE" blockId="14.[151,1436,1290,2035]" pageId="14" pageNumber="532">
<emphasis id="06F8EAEEE0715D622BAFB8559EE49376" box="[199,385,1830,1855]" italics="true" pageId="14" pageNumber="532">Uropods 1 and 2</emphasis>
armed only with spines. Peduncles in both pairs of equal length, and rami slightly shorter than peduncles. Spines present at both ends and sides of rami. In uropod 1, rami long (longer than apexes of uropod 2 rami); outer ramus slightly longer than inner ramus. Outer ramus of uropod 2 slightly shorter than inner ramus.
</paragraph>
<paragraph id="343336FCE0715D622BAFB8E19EB793BA" blockId="14.[151,1436,1290,2035]" pageId="14" pageNumber="532">
<emphasis id="06F8EAEEE0715D622BAFB8E19E5493E2" box="[199,305,1938,1963]" italics="true" pageId="14" pageNumber="532">Uropod 3</emphasis>
is 1/5−1/6 the length of body; outer ramus&gt;3-fold longer than peduncle and 4.0−4.5-fold longer than inner ramus. Rudimentary article 2 present on outer ramus. Both rami with groups of spines and dense, simple setae; plumose setae absent.
</paragraph>
<caption id="60F36674E0705D632BFFB8189BD293C8" box="[151,1207,1899,1921]" httpUri="https://zenodo.org/record/225136/files/figure.png" pageId="15" pageNumber="533" targetBox="[151,1436,193,1877]" targetPageId="15">
<paragraph id="343336FCE0705D632BFFB8189BD293C8" blockId="15.[151,1207,1899,1921]" box="[151,1207,1899,1921]" pageId="15" pageNumber="533">
<emphasis id="06F8EAEEE0705D632BFFB8189E7A93C9" bold="true" box="[151,287,1899,1921]" pageId="15" pageNumber="533">FIGURE 10.</emphasis>
<taxonomicName id="F38C4D7FE0705D632A4DB8189DF593C9" box="[293,656,1899,1920]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="15" pageNumber="533" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0705D632A4DB8189DF593C9" box="[293,656,1899,1920]" italics="true" pageId="15" pageNumber="533">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE0705D6329FEB8189DAA93C9" bold="true" box="[662,719,1899,1920]" pageId="15" pageNumber="533">
<taxonomicNameLabel id="1DCB5795E0705D6329FEB8189DAA93C9" box="[662,719,1899,1920]" pageId="15" pageNumber="533" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
, male, holotype; USD—partially schematically.
</paragraph>
</caption>
<caption id="60F36674E06F5D7C2BFFB8D29C1D93FE" box="[151,888,1953,1975]" httpUri="https://zenodo.org/record/225137/files/figure.png" pageId="16" pageNumber="534" targetBox="[201,1385,193,1931]" targetPageId="16">
<paragraph id="343336FCE06F5D7C2BFFB8D29C1D93FE" blockId="16.[151,888,1953,1975]" box="[151,888,1953,1975]" pageId="16" pageNumber="534">
<emphasis id="06F8EAEEE06F5D7C2BFFB8D29E7B93FF" bold="true" box="[151,286,1953,1975]" pageId="16" pageNumber="534">FIGURE 11.</emphasis>
<taxonomicName id="F38C4D7FE06F5D7C2A4CB8D29DEB93FF" box="[292,654,1953,1974]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="16" pageNumber="534" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06F5D7C2A4CB8D29DEB93FF" box="[292,654,1953,1974]" italics="true" pageId="16" pageNumber="534">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06F5D7C29FCB8D29DA893FF" bold="true" box="[660,717,1953,1974]" pageId="16" pageNumber="534">
<taxonomicNameLabel id="1DCB5795E06F5D7C29FCB8D29DA893FF" box="[660,717,1953,1974]" pageId="16" pageNumber="534" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
, male, holotype.
</paragraph>
</caption>
<caption id="60F36674E06E5D7D2BFFB8D59C1C93F5" box="[151,889,1958,1980]" httpUri="https://zenodo.org/record/225138/files/figure.png" pageId="17" pageNumber="535" targetBox="[151,1436,193,1936]" targetPageId="17">
<paragraph id="343336FCE06E5D7D2BFFB8D59C1C93F5" blockId="17.[151,889,1958,1980]" box="[151,889,1958,1980]" pageId="17" pageNumber="535">
<emphasis id="06F8EAEEE06E5D7D2BFFB8D59E7A93F2" bold="true" box="[151,287,1958,1980]" pageId="17" pageNumber="535">FIGURE 12.</emphasis>
<taxonomicName id="F38C4D7FE06E5D7D2A4DB8D59DF593F2" box="[293,656,1958,1979]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="17" pageNumber="535" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06E5D7D2A4DB8D59DF593F2" box="[293,656,1958,1979]" italics="true" pageId="17" pageNumber="535">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06E5D7D29FEB8D49DAA93F5" bold="true" box="[662,719,1959,1980]" pageId="17" pageNumber="535">
<taxonomicNameLabel id="1DCB5795E06E5D7D29FEB8D49DAA93F5" box="[662,719,1959,1980]" pageId="17" pageNumber="535" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
, male, holotype.
</paragraph>
</caption>
<caption id="60F36674E06D5D7E2BFFB8D29C1C93FE" box="[151,889,1953,1975]" httpUri="https://zenodo.org/record/225139/files/figure.png" pageId="18" pageNumber="536" targetBox="[191,1362,193,1928]" targetPageId="18">
<paragraph id="343336FCE06D5D7E2BFFB8D29C1C93FE" blockId="18.[151,889,1953,1975]" box="[151,889,1953,1975]" pageId="18" pageNumber="536">
<emphasis id="06F8EAEEE06D5D7E2BFFB8D29E7A93FF" bold="true" box="[151,287,1953,1975]" pageId="18" pageNumber="536">FIGURE 13.</emphasis>
<taxonomicName id="F38C4D7FE06D5D7E2A4DB8D29DF593FF" box="[293,656,1953,1974]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="18" pageNumber="536" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06D5D7E2A4DB8D29DF593FF" box="[293,656,1953,1974]" italics="true" pageId="18" pageNumber="536">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<taxonomicNameLabel id="1DCB5795E06D5D7E29FEB8D29DAA93FF" box="[662,719,1953,1974]" pageId="18" pageNumber="536" rank="species">
<emphasis id="06F8EAEEE06D5D7E29FEB8D29DAA93FF" bold="true" box="[662,719,1953,1974]" pageId="18" pageNumber="536">sp. n.</emphasis>
</taxonomicNameLabel>
, male, holotype.
</paragraph>
</caption>
<caption id="60F36674E06C5D7F2BFFB8D29AFF93FE" box="[151,1434,1953,1975]" httpUri="https://zenodo.org/record/225140/files/figure.png" pageId="19" pageNumber="537" targetBox="[265,1321,193,1931]" targetPageId="19">
<paragraph id="343336FCE06C5D7F2BFFB8D29AFF93FE" blockId="19.[151,1434,1953,1975]" box="[151,1434,1953,1975]" pageId="19" pageNumber="537">
<emphasis id="06F8EAEEE06C5D7F2BFFB8D29E7A93FF" bold="true" box="[151,287,1953,1975]" pageId="19" pageNumber="537">FIGURE 14.</emphasis>
<taxonomicName id="F38C4D7FE06C5D7F2A4DB8D29DF593FF" box="[293,656,1953,1974]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="19" pageNumber="537" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06C5D7F2A4DB8D29DF593FF" box="[293,656,1953,1974]" italics="true" pageId="19" pageNumber="537">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06C5D7F29FEB8D29DAA93FF" bold="true" box="[662,719,1953,1974]" pageId="19" pageNumber="537">
<taxonomicNameLabel id="1DCB5795E06C5D7F29FEB8D29DAA93FF" box="[662,719,1953,1974]" pageId="19" pageNumber="537" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
Ur1, Ur2, Ur3—male, holotype; PMx1—female, paratype (15.2 mm).
</paragraph>
</caption>
<caption id="60F36674E06B5D782BFFB8589C989308" box="[151,1021,1835,1857]" httpUri="https://zenodo.org/record/225141/files/figure.png" pageId="20" pageNumber="538" targetBox="[151,1436,193,1813]" targetPageId="20">
<paragraph id="343336FCE06B5D782BFFB8589C989308" blockId="20.[151,1021,1835,1857]" box="[151,1021,1835,1857]" pageId="20" pageNumber="538">
<emphasis id="06F8EAEEE06B5D782BFFB8589E7A9309" bold="true" box="[151,287,1835,1857]" pageId="20" pageNumber="538">FIGURE 15.</emphasis>
<taxonomicName id="F38C4D7FE06B5D782A4DB8589DF59309" box="[293,656,1835,1856]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="20" pageNumber="538" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06B5D782A4DB8589DF59309" box="[293,656,1835,1856]" italics="true" pageId="20" pageNumber="538">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06B5D7829FEB8589DAA9309" bold="true" box="[662,719,1835,1856]" pageId="20" pageNumber="538">
<taxonomicNameLabel id="1DCB5795E06B5D7829FEB8589DAA9309" box="[662,719,1835,1856]" pageId="20" pageNumber="538" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
, female, paratype (15.2 mm).
</paragraph>
</caption>
<paragraph id="343336FCE06B5D782BAFB81E9E889387" blockId="20.[151,1436,1901,2034]" pageId="20" pageNumber="538">
<taxonomicName id="F38C4D7FE06B5D782BAFB81E9E6893CF" box="[199,269,1901,1926]" class="Maxillopoda" family="Telsidae" genus="Telson" kingdom="Animalia" order="Poecilostomatoida" pageId="20" pageNumber="538" phylum="Arthropoda" rank="genus">
<emphasis id="06F8EAEEE06B5D782BAFB81E9E6893CF" box="[199,269,1901,1926]" italics="true" pageId="20" pageNumber="538">Telson</emphasis>
</taxonomicName>
notched up to the base; lobes tapering, and each with 3 apical spines and groups of setae on apexes and dorsal surface; setae not exceeding length of lobes; exterior and interior margins without spines. Body length up to 
<quantity id="F3749B19E06B5D782AFFB8C59E8C9387" box="[407,489,1974,1998]" metricMagnitude="-2" metricUnit="m" metricValue="1.8" pageId="20" pageNumber="538" unit="mm" value="18.0">18 mm</quantity>
.
</paragraph>
<paragraph id="343336FCE06B5D792BAFB8AA9DD4949C" blockId="20.[151,1436,1901,2034]" lastBlockId="21.[151,1437,151,2013]" lastPageId="21" lastPageNumber="539" pageId="20" pageNumber="538">
<emphasis id="06F8EAEEE06B5D782BAFB8AA9D2F93BB" box="[199,586,2009,2034]" italics="true" pageId="20" pageNumber="538">Female. Propodus of gnathopod 1</emphasis>
is 0.7 times as long as head, its superior and inferior margins parallel, and palmar margin markedly skewed, but delimited with inferior margin and not concave; marginal spines large; inferior margin with fewer spines than in males.
</paragraph>
<paragraph id="343336FCE06A5D792BAFBFAC9B329554" blockId="21.[151,1437,151,2013]" pageId="21" pageNumber="539">
<emphasis id="06F8EAEEE06A5D792BAFBFAC9EB394B1" box="[199,470,223,248]" italics="true" pageId="21" pageNumber="539">Propodus of gnatopod 2</emphasis>
slightly shorter and narrower than in gnatopod 1 and almost rectangular; superior and inferior margins parallel, and palmar and inferior margins forming almost right angle.
</paragraph>
<paragraph id="343336FCE06A5D792BAFBE549D9495C1" blockId="21.[151,1437,151,2013]" pageId="21" pageNumber="539">
Furthermore, there is a distinct difference between the right and left 
<emphasis id="06F8EAEEE06A5D7928ADBE549B5F9509" box="[965,1082,295,320]" italics="true" pageId="21" pageNumber="539">maxillae 1</emphasis>
of the 
<typeStatus id="EB37885EE06A5D792FE1BE5B9B8C9509" box="[1161,1257,296,320]" pageId="21" pageNumber="539" type="paratype">paratype</typeStatus>
(female). Right maxilla 1 with considerably expanded apical article of palp, exceeding width of outer plate and bearing 6 tapering small teeth and sparse short setae on its distal margin.
</paragraph>
<paragraph id="343336FCE06A5D792BAFBEE69CDD95E4" blockId="21.[151,1437,151,2013]" box="[199,952,404,429]" pageId="21" pageNumber="539">
<emphasis id="06F8EAEEE06A5D792BAFBEE69E5795E4" box="[199,306,404,429]" italics="true" pageId="21" pageNumber="539">Lower lip</emphasis>
lobes wide oval, with thin setules along inferior margins.
</paragraph>
<paragraph id="343336FCE06A5D792BAFBEC49B209599" blockId="21.[151,1437,151,2013]" box="[199,1093,439,464]" pageId="21" pageNumber="539">
Body length up to 
<quantity id="F3749B19E06A5D792AFFBEC49E9B9586" box="[407,510,439,464]" metricMagnitude="-2" metricUnit="m" metricValue="1.75" pageId="21" pageNumber="539" unit="mm" value="17.5">17.5 mm</quantity>
. Sexual differences in body length are insignificant.
</paragraph>
<paragraph id="343336FCE06A5D792BAFBEAF9AFC96CD" blockId="21.[151,1437,151,2013]" pageId="21" pageNumber="539">
<emphasis id="06F8EAEEE06A5D792BAFBEAF9E1D95BC" box="[199,376,476,501]" italics="true" pageId="21" pageNumber="539">Intravital color.</emphasis>
Two sympatric morphs of the species were identified that clearly differ based on color but are highly similar after fixation. The first morph is blue-grey with antennae that have orange stripes (
<figureCitation id="ACB72A79E06A5D792F9EBE8C9A519651" box="[1270,1332,511,536]" captionStart="FIGURE 9" captionStartId="14.[151,250,1224,1246]" captionText="FIGURE 9. Two color morphs of Eulimnogammarus messerschmidtii sp. n." pageId="21" pageNumber="539">Fig 9</figureCitation>
A). This morph is similar in color to another widespread species in the Baikal littoral zone— 
<taxonomicName id="F38C4D7FE06A5D792F0BBD579E0D9629" authority="Dybowsky, 1874" authorityName="Dybowsky" authorityYear="1874" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE06A5D792F0BBD579AF99675" box="[1123,1436,548,573]" italics="true" pageId="21" pageNumber="539">Eulimnogammarus cyaneus</emphasis>
(Dybowsky, 1874)
</taxonomicName>
(see “Comparative remarks”). The second morph is ginger-red (light-orange) and has antennae with orange stripes that are darker than the stripes above; the urosomital segments carry a dark-red spot (
<figureCitation id="ACB72A79E06A5D792E45BD1F9A0A96CD" box="[1325,1391,620,645]" captionStart="FIGURE 9" captionStartId="14.[151,250,1224,1246]" captionText="FIGURE 9. Two color morphs of Eulimnogammarus messerschmidtii sp. n." pageId="21" pageNumber="539">Fig. 9</figureCitation>
B).
</paragraph>
<paragraph id="343336FCE06A5D792BAFBDFC9CCF96B9" blockId="21.[151,1437,151,2013]" pageId="21" pageNumber="539">
Color polymorphism has been described previously for other Baikal species: 
<taxonomicName id="F38C4D7FE06A5D792FF0BDE29A7496E1" box="[1176,1297,657,680]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE06A5D792FF0BDE29A7496E1" box="[1176,1297,657,680]" italics="true" pageId="21" pageNumber="539">E. cyaneus</emphasis>
</taxonomicName>
, 
<taxonomicName id="F38C4D7FE06A5D792E42BDE29E089685" authority="Dybowsky, 1874" authorityName="Dybowsky" authorityYear="1874" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="vittatus">
<emphasis id="06F8EAEEE06A5D792E42BDE29AF996E1" box="[1322,1436,657,680]" italics="true" pageId="21" pageNumber="539">E. vittatus</emphasis>
(Dybowsky, 1874)
</taxonomicName>
and 
<taxonomicName id="F38C4D7FE06A5D792AD8BDC79CA59685" authority="Garjajew, 1901" authorityName="Garjajew" authorityYear="1901" box="[432,960,692,717]" class="Malacostraca" family="Acanthogammaridae" genus="Parapallasea" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="subSpecies" species="puzyllii" subSpecies="nigra">
<emphasis id="06F8EAEEE06A5D792AD8BDC79D959685" box="[432,752,692,717]" italics="true" pageId="21" pageNumber="539">Parapallasea puzyllii nigra</emphasis>
(Garjajew, 1901)
</taxonomicName>
(
<bibRefCitation id="501D4B0DE06A5D7928BDBDC79BE39685" author="Takhteev" box="[981,1158,692,717]" pageId="21" pageNumber="539" refString="Takhteev, V. V. (1993) Fauna of amphipods of the coastal zone of Lake Baikal in the area of Bol'shiye Koty. Irkutsk State University, Irkutsk, 26 pp. [in Russian]" type="book" year="1993">Takhteev 1993</bibRefCitation>
; 
<bibRefCitation id="501D4B0DE06A5D792FF0BDC79BB09685" author="Takhteev" box="[1176,1237,692,716]" pageId="21" pageNumber="539" refString="Takhteev, V. V. (2000) Essays on the amphipods of Lake Baikal: systematics, comparative ecology, evolution. Irkutsk State University Press, Irkutsk, 350 pp. [in Russian]" type="book" year="2000">2000</bibRefCitation>
). The carotenoid composition may affect the color (
<bibRefCitation id="501D4B0DE06A5D79297FBDA49DAF96B9" author="Goodwin" box="[535,714,727,752]" pageId="21" pageNumber="539" refString="Goodwin, T. W. (1960) Biochemistry of pigments. In: Waterman, T. H. (Ed.), Physiology of Crustacea. Vol. 1. Metabolism and growth. Academic Press, New York &amp; London, pp. 101 - 140." type="book" year="1960">Goodwin, 1960</bibRefCitation>
; 
<bibRefCitation id="501D4B0DE06A5D7929BEBDA49CFB96B9" author="Wade" box="[726,926,727,752]" pageId="21" pageNumber="539" refString="Wade, N. M., Anderson, M., Sellars, M. J., Tume, R. K., Preston, N. P. &amp; Glencross, B. D. (2012) Mechanisms of colour adaptation in the prawn Penaeus monodon. Journal of experimental biology, 215 (2), 343 - 350. http: // dx. doi. org / 10.1242 / jeb. 064592" type="journal article" year="2012">
Wade 
<emphasis id="06F8EAEEE06A5D792874BDAA9C3196B9" box="[796,852,727,752]" italics="true" pageId="21" pageNumber="539">et al.</emphasis>
, 2012
</bibRefCitation>
).
</paragraph>
<paragraph id="343336FCE06A5D792BAFBD8F9D6697A5" blockId="21.[151,1437,151,2013]" pageId="21" pageNumber="539">
<emphasis id="06F8EAEEE06A5D792BAFBD8F9E5E975C" bold="true" box="[199,315,764,789]" pageId="21" pageNumber="539">Variation.</emphasis>
The length of the flagella of antennae 1 and 2 and uropod 
<date id="4032103CE06A5D792896BD8F9B22975C" box="[1022,1095,764,789]" pageId="21" pageNumber="539">3 may</date>
vary a bit. The notch on the anterior margin of the eye may be less indistinct or distinct. The setae on the posterior margin of basis pereopod 
<date id="4032103CE06A5D792EE6BC539FA29714" pageId="21" pageNumber="539">7 may</date>
be of varying length; however, in general, they are longer than normal for 
<taxonomicName id="F38C4D7FE06A5D792F58BC379A609714" box="[1072,1285,836,861]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="genus">
<emphasis id="06F8EAEEE06A5D792F58BC379A609714" box="[1072,1285,836,861]" italics="true" pageId="21" pageNumber="539">Eulimnogammarus</emphasis>
</taxonomicName>
species. The epimeral plates 
<date id="4032103CE06A5D792A22BC1B9EB297C9" box="[330,471,871,896]" pageId="21" pageNumber="539">2 and 3 may</date>
bear sparse, medial-length setae on their inferior and posterior margins; small spines on the third pair may be unapparent. Spines on the last body segments vary in size. The spine and setae armaments on the left and right sides of these segments may show fluctuating asymmetry (see 
<figureCitation id="ACB72A79E06A5D792F5EBCDC9BED9781" box="[1078,1160,943,968]" captionStart="FIGURE 10" captionStartId="15.[151,250,1899,1921]" captionTargetBox="[151,1436,193,1877]" captionTargetId="figure@15.[151,1436,193,1877]" captionTargetPageId="15" captionText="FIGURE 10. Eulimnogammarus messerschmidtii sp. n., male, holotype; USD—partially schematically." httpUri="https://zenodo.org/record/225136/files/figure.png" pageId="21" pageNumber="539">Fig. 10</figureCitation>
). The spines on the third pleonal segment form 2−4 rows.
</paragraph>
<paragraph id="343336FCE06A5D792BAFBC849CAB9011" blockId="21.[151,1437,151,2013]" pageId="21" pageNumber="539">
<emphasis id="06F8EAEEE06A5D792BAFBC849EBF9059" bold="true" box="[199,474,1015,1040]" pageId="21" pageNumber="539">Comparative remarks.</emphasis>
Because of intravital color (“blue” morph) of this species it may be confused with 
<taxonomicName id="F38C4D7FE06A5D792BFFBB6E9EC6907C" authority="Dybowsky" authorityName="Dybowsky" box="[151,419,1052,1077]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE06A5D792BFFBB6E9E75907D" box="[151,272,1053,1076]" italics="true" pageId="21" pageNumber="539">E. cyaneus</emphasis>
(Dybowsky)
</taxonomicName>
and also this species may be inaccurately identified as 
<taxonomicName id="F38C4D7FE06A5D792F61BB6E9BFD907C" box="[1033,1176,1052,1077]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyanoides">
<emphasis id="06F8EAEEE06A5D792F61BB6E9BFD907C" box="[1033,1176,1052,1077]" italics="true" pageId="21" pageNumber="539">E. cyanoides</emphasis>
</taxonomicName>
using the common key of 
<bibRefCitation id="501D4B0DE06A5D792BDDBB4C9EE29011" author="Bazikalova" box="[181,391,1087,1112]" pageId="21" pageNumber="539" refString="Bazikalova, A. Ya. (1945) Les Amphipodes du Baikal. Proceedings of the Baikal Limnological station USSR Academy of Sciences, 11, 1 - 440. [in Russian, with French summary]" type="journal article" year="1945">Bazikalova (1945)</bibRefCitation>
, differences between these species are stated below.
</paragraph>
<paragraph id="343336FCE06A5D792BAFBB179E839144" blockId="21.[151,1437,151,2013]" pageId="21" pageNumber="539">
The most considerable differences between 
<taxonomicName id="F38C4D7FE06A5D7929D2BB169CE89034" box="[698,909,1124,1149]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06A5D7929D2BB169CE89034" box="[698,909,1124,1149]" italics="true" pageId="21" pageNumber="539">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06A5D7928FEBB179CB29034" bold="true" box="[918,983,1124,1149]" pageId="21" pageNumber="539">
<taxonomicNameLabel id="1DCB5795E06A5D7928FEBB179CB29034" box="[918,983,1124,1149]" pageId="21" pageNumber="539" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
and 
<taxonomicName id="F38C4D7FE06A5D792F78BB169BFA9034" box="[1040,1183,1124,1149]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyanoides">
<emphasis id="06F8EAEEE06A5D792F78BB169BFA9034" box="[1040,1183,1124,1149]" italics="true" pageId="21" pageNumber="539">E. cyanoides</emphasis>
</taxonomicName>
: 1. Spines are present on the 4 last and not on the 3 last body segments; setae on the urosomital segments do not exceed the length of the following segment. 2. Eyes are narrow and curved. 3. The basal article of the peduncle of 
<emphasis id="06F8EAEEE06A5D792FD5BBDE9A59908D" box="[1213,1340,1196,1220]" italics="true" pageId="21" pageNumber="539">antennae 1</emphasis>
without spines, but with dense setae on the distal half. 4. The propodus of gnathopod 1 is considerably smaller and does not exceed the length of the head.
</paragraph>
<paragraph id="343336FCE06A5D792BAFBA649D3D9219" blockId="21.[151,1437,151,2013]" pageId="21" pageNumber="539">
Differences between 
<taxonomicName id="F38C4D7FE06A5D792ADFBA6A9DEE9179" box="[439,651,1303,1328]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06A5D792ADFBA6A9DEE9179" box="[439,651,1303,1328]" italics="true" pageId="21" pageNumber="539">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06A5D7929FCBA649DB09179" bold="true" box="[660,725,1303,1328]" pageId="21" pageNumber="539">
<taxonomicNameLabel id="1DCB5795E06A5D7929FCBA649DB09179" box="[660,725,1303,1328]" pageId="21" pageNumber="539" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
and 
<taxonomicName id="F38C4D7FE06A5D792866BA6A9CE29179" box="[782,903,1305,1328]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE06A5D792866BA6A9CE29179" box="[782,903,1305,1328]" italics="true" pageId="21" pageNumber="539">E. cyaneus</emphasis>
</taxonomicName>
: 1. The body size is larger (
<taxonomicName id="F38C4D7FE06A5D792FA4BA6A9A209179" box="[1228,1349,1305,1328]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE06A5D792FA4BA6A9A209179" box="[1228,1349,1305,1328]" italics="true" pageId="21" pageNumber="539">E. cyaneus</emphasis>
</taxonomicName>
—up to 
<quantity id="F3749B19E06A5D792BFFBA4F9E77911D" box="[151,274,1340,1364]" metricMagnitude="-2" metricUnit="m" metricValue="1.2" metricValueMax="1.3" metricValueMin="1.1" pageId="21" pageNumber="539" unit="mm" value="12.0" valueMax="13.0" valueMin="11.0">11−13 mm</quantity>
and rarely up to 
<quantity id="F3749B19E06A5D792ABDBA4F9D4F911D" box="[469,554,1340,1365]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="21" pageNumber="539" unit="mm" value="15.0">15 mm</quantity>
). 2. Spines are present on the third pleonal segment (in 
<taxonomicName id="F38C4D7FE06A5D792FCCBA4E9A78911D" box="[1188,1309,1341,1364]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE06A5D792FCCBA4E9A78911D" box="[1188,1309,1341,1364]" italics="true" pageId="21" pageNumber="539">E. cyaneus</emphasis>
</taxonomicName>
it has only dense setae). 3. The terminal article of the palp of the mandible bears ordinary brush (D3-setae). Setae do not differ significantly in length and are “clipped” equally (in 
<taxonomicName id="F38C4D7FE06A5D79286CBAF69C1891D5" box="[772,893,1413,1436]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE06A5D79286CBAF69C1891D5" box="[772,893,1413,1436]" italics="true" pageId="21" pageNumber="539">E. cyaneus</emphasis>
</taxonomicName>
, the brush shows long unequal setae). 4. The posterior margin of the basis of pereopod 
<quantity id="F3749B19E06A5D792901BADA9DF69189" box="[617,659,1447,1472]" metricMagnitude="-1" metricUnit="m" metricValue="1.778" pageId="21" pageNumber="539" unit="in" value="7.0">7 in</quantity>
<taxonomicName id="F38C4D7FE06A5D7929F2BADA9C769189" box="[666,787,1449,1472]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE06A5D7929F2BADA9C769189" box="[666,787,1449,1472]" italics="true" pageId="21" pageNumber="539">E. cyaneus</emphasis>
</taxonomicName>
is distinct in its distal part and is elongated to a sharpened angle, whereas in 
<taxonomicName id="F38C4D7FE06A5D792A1BBABE9D2391AC" box="[371,582,1484,1509]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06A5D792A1BBABE9D2391AC" box="[371,582,1484,1509]" italics="true" pageId="21" pageNumber="539">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06A5D79293BBABF9DFD91AC" bold="true" box="[595,664,1484,1509]" pageId="21" pageNumber="539">
<taxonomicNameLabel id="1DCB5795E06A5D79293BBABF9DFD91AC" box="[595,664,1484,1509]" pageId="21" pageNumber="539" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
, the inferior portion of the posterior margin shows an indistinct rectangular lobe only. 5. The outer ramus of uropod 3 of 
<taxonomicName id="F38C4D7FE06A5D792877BA829C969241" box="[799,1011,1519,1544]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06A5D792877BA829C969241" box="[799,1011,1519,1544]" italics="true" pageId="21" pageNumber="539">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06A5D792893BA9C9B5E9241" bold="true" box="[1019,1083,1519,1544]" pageId="21" pageNumber="539">
<taxonomicNameLabel id="1DCB5795E06A5D792893BA9C9B5E9241" box="[1019,1083,1519,1544]" pageId="21" pageNumber="539" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
is 4.0−4.5-fold longer than the inner ramus, and its second article is rudimentary; the outer ramus of 
<taxonomicName id="F38C4D7FE06A5D7928F2B9669B769265" box="[922,1043,1557,1580]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE06A5D7928F2B9669B769265" box="[922,1043,1557,1580]" italics="true" pageId="21" pageNumber="539">E. cyaneus</emphasis>
</taxonomicName>
is only 3-fold longer than the inner ramus, and the second article is distinct.
</paragraph>
</subSubSection>
<subSubSection id="7C966577E06A5D792BAFB92F9B709361" pageId="21" pageNumber="539" type="etymology">
<paragraph id="343336FCE06A5D792BAFB92F9B709361" blockId="21.[151,1437,151,2013]" pageId="21" pageNumber="539">
<emphasis id="06F8EAEEE06A5D792BAFB92F9E2B923C" bold="true" box="[199,334,1628,1653]" pageId="21" pageNumber="539">Etymology.</emphasis>
This species is named in honour of the 
<collectingCountry id="4C9B766CE06A5D792800B92F9CA7923D" box="[872,962,1628,1652]" name="Germany" pageId="21" pageNumber="539">German</collectingCountry>
scientist-encyclopedist Daniel Gottlieb Messerschmidt (
<date id="4032103CE06A5D792A3DB90C9EB392D1" box="[341,470,1663,1688]" pageId="21" pageNumber="539" value="1685" valueMax="1735">1685–1735</date>
) who was one of the first members of the Russian (St. Petersburg) Academy of Sciences. D.G. Messerschmidt accomplished the first scientific expedition to Siberia (
<date id="4032103CE06A5D792F3DB9D79BBF92F5" box="[1109,1242,1700,1724]" pageId="21" pageNumber="539" value="1720" valueMax="1727">1720–1727</date>
). He was the first researcher of Lake Baikal who described the nature resources (including numerous plant species) and performed ethnologic studies of local tribes and peoples in regions from the Lake Baikal area to Eastern Siberia, which are described in his 4-volume work “Forschungsreise durch Sibirien (
<date id="4032103CE06A5D792810B8639C9B9361" box="[888,1022,1808,1832]" pageId="21" pageNumber="539" value="1720" valueMax="1727">1720–1727</date>
)”.
</paragraph>
</subSubSection>
<subSubSection id="7C966577E06A5D7B2BAFB8479E599309" lastPageId="23" lastPageNumber="541" pageId="21" pageNumber="539" type="distribution">
<paragraph id="343336FCE06A5D7A2BAFB8479B9E949D" blockId="21.[151,1437,151,2013]" lastBlockId="22.[151,1437,151,1079]" lastPageId="22" lastPageNumber="540" pageId="21" pageNumber="539">
<emphasis id="06F8EAEEE06A5D792BAFB8479C4C9304" bold="true" box="[199,809,1844,1869]" pageId="21" pageNumber="539">Distribution, ecology and biology of populations.</emphasis>
To date, occurrence of 
<taxonomicName id="F38C4D7FE06A5D792F38B8469A4F9304" box="[1104,1322,1844,1869]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06A5D792F38B8469A4F9304" box="[1104,1322,1844,1869]" italics="true" pageId="21" pageNumber="539">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06A5D792E5FB8479A189304" bold="true" box="[1335,1405,1844,1869]" pageId="21" pageNumber="539">
<taxonomicNameLabel id="1DCB5795E06A5D792E5FB8479A189304" box="[1335,1405,1844,1869]" pageId="21" pageNumber="539" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
is documented for the 3 sampling points stated above (see “ 
<typeStatus id="EB37885EE06A5D792879B82B9C2E9339" box="[785,843,1880,1904]" pageId="21" pageNumber="539">Type</typeStatus>
specimens”; 
<figureCitation id="ACB72A79E06A5D792889B8249B449339" box="[993,1057,1879,1904]" captionStart="FIGURE 1" captionStartId="2.[151,250,1744,1766]" captionTargetBox="[192,1394,265,1722]" captionTargetId="figure@2.[192,1395,265,1723]" captionTargetPageId="2" captionText="FIGURE 1. Schematic map of distribution of Eulimnogammarus messerschmidtii sp. n. on Lake Baikal. 1 — northern part of the Lake near the delta of the Tyya River; 2 — Bol’shoy Solontsovy cape, southern part; 3 — Olkhon Island, Kharin-Irgi Bay." httpUri="https://zenodo.org/record/225128/files/figure.png" pageId="21" pageNumber="539">Fig. 1</figureCitation>
). Based on the descriptions of the sites of sampling, the species is assumed to inhabit the cold open shore and the shallow waters of Lake Baikal, the latter of which can warm up to 20°C or more during summer (Kharin-Irgi Bay, shallow water of the Tyya River). The dwelling substrata include boulders and pebbles with underlying sand. Apparently, 
<taxonomicName id="F38C4D7FE06A5D792F02B8B69A589394" box="[1130,1341,1988,2013]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="21" pageNumber="539" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE06A5D792F02B8B69A589394" box="[1130,1341,1988,2013]" italics="true" pageId="21" pageNumber="539">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE06A5D792E2CB8B79AE69394" bold="true" box="[1348,1411,1988,2013]" pageId="21" pageNumber="539">
<taxonomicNameLabel id="1DCB5795E06A5D792E2CB8B79AE69394" box="[1348,1411,1988,2013]" pageId="21" pageNumber="539" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
is one of the typical, and even mass, species of the littoral zone of Lake Baikal; however, its distribution is limited by the northern half of the lake and the Maloe More strait (including its south tip—Olkhonskie Vorota).
</paragraph>
<paragraph id="343336FCE0695D7A2BAFBF929D919509" blockId="22.[151,1437,151,1079]" pageId="22" pageNumber="540">
<taxonomicName id="F38C4D7FE0695D7A2BAFBF929EFE94B1" box="[199,411,223,248]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="22" pageNumber="540" phylum="Arthropoda" rank="species" species="messerschmidtii">
<emphasis id="06F8EAEEE0695D7A2BAFBF929EFE94B1" box="[199,411,223,248]" italics="true" pageId="22" pageNumber="540">E. messerschmidtii</emphasis>
</taxonomicName>
may perform horizontal migrations because it is found to be either highly abundant or absent at the same sites; i.e., it was found en masse in Kharin-Irgi Bay (Olkhon island) on 
<date id="4032103CE0695D7A2FACBE779A209554" box="[1220,1349,260,285]" pageId="22" pageNumber="540" value="2002-06-22">22.06.2002</date>
, but no specimens were found at the same site on 
<date id="4032103CE0695D7A2906BE549D8A9509" box="[622,751,295,320]" pageId="22" pageNumber="540" value="2006-06-24">24.06.2006</date>
.
</paragraph>
<paragraph id="343336FCE0695D7A2BAFBE3F9DDC9651" blockId="22.[151,1437,151,1079]" pageId="22" pageNumber="540">
<figureCitation id="ACB72A79E0695D7A2BAFBE3F9E7D952C" box="[199,280,332,357]" captionStart="FIGURE 16" captionStartId="22.[151,250,1861,1883]" captionTargetBox="[248,1292,1183,1773]" captionTargetId="figure@22.[244,1343,1170,1837]" captionTargetPageId="22" captionText="FIGURE 16. Sex-age structure of the Eulimnogammarus messerschmidtii sp. n. population in Kharin-Irgi Bay on 22.06. 2002. The size-weight structure of the E. messerschmidtii sp. n. population and the absolute one-time fertility of females of different sizes are shown in Table 1." httpUri="https://zenodo.org/record/225142/files/figure.png" pageId="22" pageNumber="540">Fig. 16</figureCitation>
demonstrates the sex-age structure of the population of 
<taxonomicName id="F38C4D7FE0695D7A28C9BE3E9B10952C" box="[929,1141,332,357]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="22" pageNumber="540" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0695D7A28C9BE3E9B10952C" box="[929,1141,332,357]" italics="true" pageId="22" pageNumber="540">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE0695D7A2F15BE3F9BDA952C" bold="true" box="[1149,1215,332,357]" pageId="22" pageNumber="540">
<taxonomicNameLabel id="1DCB5795E0695D7A2F15BE3F9BDA952C" box="[1149,1215,332,357]" pageId="22" pageNumber="540" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
in Kharin-Irgi Bay (point 3) on 
<date id="4032103CE0695D7A2A49BE1C9EC795C1" box="[289,418,367,392]" pageId="22" pageNumber="540" value="2002-06-22">22.06.2002</date>
. Males comprised 33.7% of the population, and the male:female ratio was 1:2. Because the majority of the females—77.1%—were carrying eggs (and some had released their eggs already), it can be assumed that the period of reproduction is not very extended and that it began in May or even at the end of April. This period of reproduction is typical for another highly abundant upper-shore species— 
<taxonomicName id="F38C4D7FE0695D7A2FFABEAE9A6E95BD" box="[1170,1291,477,500]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="22" pageNumber="540" phylum="Arthropoda" rank="species" species="cyaneus">
<emphasis id="06F8EAEEE0695D7A2FFABEAE9A6E95BD" box="[1170,1291,477,500]" italics="true" pageId="22" pageNumber="540">E. cyaneus</emphasis>
</taxonomicName>
(
<bibRefCitation id="501D4B0DE0695D7A2E74BEAF9FB79651" author="Bazikalova" pageId="22" pageNumber="540" refString="Bazikalova, A. Ya. (1941) Contributions a la biologie des Amphipoda du lac Baikal. II. Reproduction. Bulletin de l'Academie des Sciences de l'URSS. Classe des sciences biologiques (Biology bulletin), No. 3, 407 - 426. [in Russian, with French summary]" type="book chapter" year="1941">Bazikalova 1941</bibRefCitation>
; 
<bibRefCitation id="501D4B0DE0695D7A2BB5BE8C9EAE9651" author="Weinberg" box="[221,459,511,536]" pageId="22" pageNumber="540" refString="Weinberg, I. V., Kamaltynov, R. M., Timofeyev, M. A., Glyzina, O. Yu. &amp; Gavrilova, A. V. (2002) Biology and production of endemic Baikalian amphipod Eulimnogammarus cyaneus (Crustacea, Amphipoda). In: Ta k h t e e v, V. V. (E d.), Ecological, physiological and parasitological researches of the freshwater amphipods. Irkutsk State University Press, Irkutsk, pp. 59 - 66. [in Russian, with English summary]" type="book chapter" year="2002">
Weinberg 
<emphasis id="06F8EAEEE0695D7A2A38BD729EED9651" box="[336,392,511,536]" italics="true" pageId="22" pageNumber="540">et al.</emphasis>
2002
</bibRefCitation>
; 
<bibRefCitation id="501D4B0DE0695D7A2ABEBE8C9DC89651" author="Govorukhina" box="[470,685,511,536]" pageId="22" pageNumber="540" refString="Govorukhina, E. B. (2005) Biology of reproduction, seasonal and diurnal dynamics of the populations of the litoral and sublitoral amphipod species in Lake Baikal, PhD Thesis. Irkutsk State University, Irkutsk, 19 pp. [in Russian]" type="book" year="2005">Govorukhina 2005</bibRefCitation>
).
</paragraph>
<paragraph id="343336FCE0695D7A2BAFBD579F889686" blockId="22.[151,1437,151,1079]" pageId="22" pageNumber="540">
The small sample of 
<taxonomicName id="F38C4D7FE0695D7A2AD8BD569DE69674" box="[432,643,548,573]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="22" pageNumber="540" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0695D7A2AD8BD569DE69674" box="[432,643,548,573]" italics="true" pageId="22" pageNumber="540">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE0695D7A29E2BD579DAD9674" bold="true" box="[650,712,548,573]" pageId="22" pageNumber="540">
<taxonomicNameLabel id="1DCB5795E0695D7A29E2BD579DAD9674" box="[650,712,548,573]" pageId="22" pageNumber="540" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
from the Bolshoy Solontsovy cape, collected at the same time of year (
<date id="4032103CE0695D7A2BBDBD399E3C962A" box="[213,345,586,611]" pageId="22" pageNumber="540" value="2006-06-25">25.06.2006</date>
), comprised 1 of 
<specimenCount id="228AFD75E0695D7A2973BD389DF0962A" box="[539,661,586,611]" pageId="22" pageNumber="540" type="female">12 females</specimenCount>
in the 4th stage and 
<quantity id="F3749B19E0695D7A281ABD389CCF962A" box="[882,938,586,611]" metricMagnitude="-1" metricUnit="m" metricValue="2.794" pageId="22" pageNumber="540" unit="in" value="11.0">11 in</quantity>
the 5th stage of the life cycle (see: methods). 
<typeStatus id="EB37885EE0695D7A2BFFBD039FAA96C1" box="[151,207,624,648]" pageId="22" pageNumber="540">Type</typeStatus>
specimens from the shallow water of the Tyya River delta (
<date id="4032103CE0695D7A2810BD1C9C9F96CE" box="[888,1018,623,647]" pageId="22" pageNumber="540" value="2012-07-21">21.07.2012</date>
) included only one female in the 5th stage and 
<specimenCount id="228AFD75E0695D7A2A61BDE09E1096E2" box="[265,373,658,683]" pageId="22" pageNumber="540" type="female">4 females</specimenCount>
in the 2nd stage. They were large, had apparently passed out of reproduction and had already molted.
</paragraph>
<paragraph id="343336FCE0695D7A2BAFBDA99E15975E" blockId="22.[151,1437,151,1079]" pageId="22" pageNumber="540">Despite the limited amount of available material, the second part of July may be assumed as the end of reproduction cycle.</paragraph>
<paragraph id="343336FCE0695D7A2BAFBC519B6997EE" blockId="22.[151,1437,151,1079]" pageId="22" pageNumber="540">
Based on reproduction time three main groups of amphipods from Lake Baikal are distinguished (
<bibRefCitation id="501D4B0DE0695D7A2E74BC519FB79716" author="Bazikalova" pageId="22" pageNumber="540" refString="Bazikalova, A. Ya. (1941) Contributions a la biologie des Amphipoda du lac Baikal. II. Reproduction. Bulletin de l'Academie des Sciences de l'URSS. Classe des sciences biologiques (Biology bulletin), No. 3, 407 - 426. [in Russian, with French summary]" type="book chapter" year="1941">Bazikalova 1941</bibRefCitation>
; 
<bibRefCitation id="501D4B0DE0695D7A2BB7BC359EED9716" author="Gavrilov" box="[223,392,838,863]" pageId="22" pageNumber="540" refString="Gavrilov, G. B. (1949) On the problem of the time of reproduction in amphipods and isopods in Lake Baikal. Doklady Akademii Nauk SSSR, 64 (5), 739 - 742. [in Russian]." type="journal article" year="1949">Gavrilov 1949</bibRefCitation>
). The first group includes species that reproduce from spring prior to ice breakage until the summer months; species of the second group copulate during autumn and carry eggs until spring; reproduction of species from the third group is observed during most of the year or year-round.
</paragraph>
<paragraph id="343336FCE0695D7A2BAFBCC19C8D907E" blockId="22.[151,1437,151,1079]" pageId="22" pageNumber="540">
<bibRef id="ED2CA20AE0695D7A2BAFBCC19C8D907E" pageId="22" pageNumber="540" type="book">
<author id="EC31DE19E0695D7A2BAFBCC19E0F9782" box="[199,362,946,971]" fns="I" npo="LF" pageId="22" pageNumber="540">
Apparently, 
<emphasis id="06F8EAEEE0695D7A2A39BCC79E0F9782" box="[337,362,948,971]" italics="true" pageId="22" pageNumber="540">E.</emphasis>
</author>
<title id="4688DDCAE0695D7A2A19BCC19B0097A6" jopScore="0.11448969" pageId="22" pageNumber="540">
messerschmidtii 
<emphasis id="06F8EAEEE0695D7A2944BCC19D089782" bold="true" box="[556,621,946,971]" pageId="22" pageNumber="540">sp. n.</emphasis>
belongs to the first group of species with a spring-summer reproduction period, which may be initiated by the increase in the photoperiod to 12 hours or more
</title>
. Temperature cannot play a significant role because in the middle of May, the temperature in the Southern part of Lake Baikal does not exceed 2.5°C (
<bibRefCitation id="501D4B0DE0695D7A2B8EBB6D9ED8907E" author="Govorukhina" box="[230,445,1054,1079]" pageId="22" pageNumber="540" refString="Govorukhina, E. B. (2006) Population biology of the mass amphipod species in littoral zone of the Lake Baikal. 1. Reproduction biology and growth of the amphipod Eulimnogammarus (Philolimnogammarus) vittatus Baz. In: Takhteev, V. V. (E d.), Hydrobiology of the basins in South of East Siberia. Irkutsk State University Press, Irkutsk, pp. 67 - 82. [in Russian, with English summary]" type="book chapter" year="2006">
Govorukhina 
<year id="402477AFE0695D7A2AEBBB6D9ED8907E" box="[387,445,1054,1079]" pageId="22" pageNumber="540">2006</year>
</bibRefCitation>
) 
<journalOrPublisher id="EE4D3C30E0695D7A2AA3BB6D9C81907E" box="[459,996,1054,1079]" jopScore="0.34173775" pageId="22" pageNumber="540" type="_" typeScore="26">and solid shore ice remains in the Northern part</journalOrPublisher>
.
</bibRef>
</paragraph>
<caption id="60F36674E0695D7A2BFFB8369DC293E9" httpUri="https://zenodo.org/record/225142/files/figure.png" pageId="22" pageNumber="540" targetBox="[248,1292,1183,1773]" targetPageId="22">
<paragraph id="343336FCE0695D7A2BFFB8369DC293E9" blockId="22.[151,1436,1861,1953]" pageId="22" pageNumber="540">
<emphasis id="06F8EAEEE0695D7A2BFFB8369E7A9313" bold="true" box="[151,287,1861,1883]" pageId="22" pageNumber="540">FIGURE 16.</emphasis>
Sex-age structure of the 
<taxonomicName id="F38C4D7FE0695D7A2975B8369CE29313" box="[541,903,1861,1882]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="22" pageNumber="540" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0695D7A2975B8369CE29313" box="[541,903,1861,1882]" italics="true" pageId="22" pageNumber="540">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE0695D7A28E5B8359CA39312" bold="true" box="[909,966,1862,1883]" pageId="22" pageNumber="540">
<taxonomicNameLabel id="1DCB5795E0695D7A28E5B8359CA39312" box="[909,966,1862,1883]" pageId="22" pageNumber="540" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
population in Kharin-Irgi Bay on 22.06.2002. The size-weight structure of the 
<taxonomicName id="F38C4D7FE0695D7A292BB8169C739334" box="[579,790,1892,1917]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="22" pageNumber="540" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0695D7A292BB8169C739334" box="[579,790,1892,1917]" italics="true" pageId="22" pageNumber="540">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE0695D7A2849B8179C019334" bold="true" box="[801,868,1892,1917]" pageId="22" pageNumber="540">
<taxonomicNameLabel id="1DCB5795E0695D7A2849B8179C019334" box="[801,868,1892,1917]" pageId="22" pageNumber="540" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
population and the absolute one-time fertility of females of different sizes are shown in Table 1.
</paragraph>
</caption>
<caption id="60F36674E0685D7B2BFFBFEB9A1F94E6" box="[151,1402,151,175]" pageId="23" pageNumber="541">
<paragraph id="343336FCE0685D7B2BFFBFEB9A1F94E6" blockId="23.[151,1402,151,175]" box="[151,1402,151,175]" pageId="23" pageNumber="541">
<emphasis id="06F8EAEEE0685D7B2BFFBFEB9E6F94E6" bold="true" box="[151,266,152,175]" pageId="23" pageNumber="541">TABLE 1.</emphasis>
Size, weight and fertility of 
<taxonomicName id="F38C4D7FE0685D7B2954BFE49CDD94E6" box="[572,952,151,175]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="23" pageNumber="541" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0685D7B2954BFE49CDD94E6" box="[572,952,151,175]" italics="true" pageId="23" pageNumber="541">Eulimnogammarus messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE0685D7B28D7BFEB9C9994E6" bold="true" box="[959,1020,152,175]" pageId="23" pageNumber="541">
<taxonomicNameLabel id="1DCB5795E0685D7B28D7BFEB9C9994E6" box="[959,1020,152,175]" pageId="23" pageNumber="541" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
from Kharin-Irgi bay (22.06.2002).
</paragraph>
</caption>
<paragraph id="343336FCE0685D7B2BF7BFB99D8594A9" blockId="23.[159,1375,202,555]" box="[159,736,202,224]" pageId="23" pageNumber="541">Sex and age groups Body length, mm</paragraph>
<paragraph id="343336FCE0685D7B2947BF869A3A957A" blockId="23.[159,1375,202,555]" pageId="23" pageNumber="541">
<date id="4032103CE0685D7B2947BF869B1E9543" box="[559,1147,244,266]" pageId="23" pageNumber="541" value="2010-08-07" valueMax="2010-09-07" valueMin="2010-08-07">7– 8– 9– 10</date>
– 11– Males Weight, mg 6.5±0.7 7.0 13.1±0.7 16.7±0.6 21.3±1.0
</paragraph>
<paragraph id="343336FCE0685D7B2A37BE349A779515" blockId="23.[159,1375,202,555]" box="[351,1298,326,348]" pageId="23" pageNumber="541">
n 
<date id="4032103CE0685D7B2947BE359CAC9515" box="[559,969,326,348]" pageId="23" pageNumber="541" value="2011-01-02">2 1 11</date>
20 7
</paragraph>
<paragraph id="343336FCE0685D7B2BF7BE039A3A964B" blockId="23.[159,1375,202,555]" pageId="23" pageNumber="541">
Females, Weight, mg – 10.4±0.4 12.2±0.5 15.3±0.5 18.0 2 stage n – 
<date id="4032103CE0685D7B298BBEEA9B1595E6" box="[739,1136,409,431]" pageId="23" pageNumber="541" value="2011-05-03">5 11 3</date>
<specimenCount id="228AFD75E0685D7B2E6DBEEA9F939591" pageId="23" pageNumber="541" type="female">1 Females</specimenCount>
, Weight, mg – 10.0 13.3±0.4 17.3±0.3 23.2±0.6 3 stage Number of eggs – 6.0 10.4±0.7 12.6±0.4 19.0±0.9
</paragraph>
<paragraph id="343336FCE0685D7B2A37BD659D8E96E8" blockId="23.[159,1375,202,555]" lastBlockId="23.[165,1382,650,1036]" pageId="23" pageNumber="541">
n – 
<date id="4032103CE0685D7B298BBD669B199662" box="[739,1148,533,555]" pageId="23" pageNumber="541" value="1937-01-17">1 17 37</date>
14 Sex and age groups Body length,mm
</paragraph>
<caption id="60F36674E0685D7B2BFFBD3C9EF4962F" box="[151,401,591,614]" pageId="23" pageNumber="541">
<paragraph id="343336FCE0685D7B2BFFBD3C9EF4962F" blockId="23.[151,401,591,614]" box="[151,401,591,614]" pageId="23" pageNumber="541">
<emphasis id="06F8EAEEE0685D7B2BFFBD3C9E6F962F" bold="true" box="[151,266,591,614]" pageId="23" pageNumber="541">TABLE 1.</emphasis>
(Continued)
</paragraph>
</caption>
<paragraph id="343336FCE0685D7B2950BDC49A559045" blockId="23.[165,1382,650,1036]" pageId="23" pageNumber="541">
<date id="4032103CE0685D7B2950BDC49B549687" box="[568,1073,695,718]" pageId="23" pageNumber="541" value="1915-12-13" valueMax="1915-12-14" valueMin="1915-12-13">12– 13– 14– 15</date>
– 16– 17– 
<specimenCount id="228AFD75E0685D7B2E24BDC49F8396B2" pageId="23" pageNumber="541" type="male">18 Males</specimenCount>
Weight, mg 26.8±1.3 31.7±0.8 37.0 – – 
<geoCoordinate id="51B8503BE0685D7B2E4BBD979E139760" direction="north" orientation="latitude" pageId="23" pageNumber="541" precision="5555" value="53.0">53.0 n</geoCoordinate>
8 3 1 – – 
<specimenCount id="228AFD75E0685D7B2E4BBC619E64971E" pageId="23" pageNumber="541" type="female">1 Females</specimenCount>
, Weight, mg – – – – – – 2 stage n – – – – – – Females, Weight, mg 29.7±0.7 – 48.1±1.9 51.3±5.5 – – 3 stage Number of eggs 28.3±1.0 – 43.8±4.7 39.7±9.0 – – n 
<date id="4032103CE0685D7B2950BC869B409045" box="[568,1061,1013,1036]" pageId="23" pageNumber="541" value="2010-03-06">10 – 6 3</date>
– –
</paragraph>
<paragraph id="343336FCE0685D7B2BAFBB5E9CCD90C7" blockId="23.[151,1437,1069,1856]" pageId="23" pageNumber="541">
The mean size of all males was 10.7± 
<quantity id="F3749B19E0685D7B2906BB5D9DA3900F" box="[622,710,1070,1094]" metricMagnitude="-4" metricUnit="m" metricValue="2.0" pageId="23" pageNumber="541" unit="mm" value="0.2">0.2 mm</quantity>
(n=54), whereas females were 10.4± 
<quantity id="F3749B19E0685D7B2F0FBB5D9BDB900F" box="[1127,1214,1070,1094]" metricMagnitude="-4" metricUnit="m" metricValue="2.0" pageId="23" pageNumber="541" unit="mm" value="0.2">0.2 mm</quantity>
(n=111). The mean weight of all males was 19.4± 
<quantity id="F3749B19E0685D7B2A96BB219D289023" box="[510,589,1106,1130]" metricMagnitude="-6" metricUnit="kg" metricValue="1.1" pageId="23" pageNumber="541" unit="mg" value="1.1">1.1 mg</quantity>
(n=54), whereas females weighed 20.0±1.0 mg (n=111). There were no statistically significant intersexual differences in either size or weight.
</paragraph>
<paragraph id="343336FCE0685D7B2BAFBBE99A2B909F" blockId="23.[151,1437,1069,1856]" pageId="23" pageNumber="541">
To further describe the population structure of 
<taxonomicName id="F38C4D7FE0685D7B29BEBBE89CCF90FB" box="[726,938,1177,1202]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="23" pageNumber="541" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0685D7B29BEBBE89CCF90FB" box="[726,938,1177,1202]" italics="true" pageId="23" pageNumber="541">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE0685D7B28D9BBEA9C9290FB" bold="true" box="[945,1015,1177,1202]" pageId="23" pageNumber="541">
<taxonomicNameLabel id="1DCB5795E0685D7B28D9BBEA9C9790FB" box="[945,1010,1177,1202]" pageId="23" pageNumber="541" rank="species">sp. n.</taxonomicNameLabel>
,
</emphasis>
which may aid in calculating growth rates and life cycle in further studies, the mean size and weight of females at different stages was measured.
</paragraph>
<paragraph id="343336FCE0685D7B2BAFBB929EE5910C" blockId="23.[151,1437,1069,1856]" pageId="23" pageNumber="541">
The mean size of females in the 1st stage was 7.7± 
<quantity id="F3749B19E0685D7B284EBB929CE790B0" box="[806,898,1249,1274]" metricMagnitude="-4" metricUnit="m" metricValue="6.0" pageId="23" pageNumber="541" unit="mm" value="0.6">0.6 mm</quantity>
, and the mean weight was 7.0±1.0 mg (n=3); females in the 2nd stage were 9.2± 
<quantity id="F3749B19E0685D7B2979BA7A9D0D9169" box="[529,616,1289,1313]" metricMagnitude="-4" metricUnit="m" metricValue="2.0" pageId="23" pageNumber="541" unit="mm" value="0.2">0.2 mm</quantity>
and 12.6± 
<quantity id="F3749B19E0685D7B29B6BA7B9C489168" box="[734,813,1288,1313]" metricMagnitude="-7" metricUnit="kg" metricValue="6.0" pageId="23" pageNumber="541" unit="mg" value="0.6">0.6 mg</quantity>
(n=20); females in the 3rd stage were 10.8± 
<quantity id="F3749B19E0685D7B2E7DBA7A9A099169" box="[1301,1388,1289,1313]" metricMagnitude="-4" metricUnit="m" metricValue="2.0" pageId="23" pageNumber="541" unit="mm" value="0.2">0.2 mm</quantity>
and 22.1± 
<quantity id="F3749B19E0685D7B2BB2BA5E9E40910C" box="[218,293,1325,1349]" metricMagnitude="-6" metricUnit="kg" metricValue="1.1" pageId="23" pageNumber="541" unit="mg" value="1.1">1.1 mg</quantity>
(n=88).
</paragraph>
<paragraph id="343336FCE0685D7B2BAFBA279BD991B5" blockId="23.[151,1437,1069,1856]" pageId="23" pageNumber="541">
As shown in table 1, there are significant differences in female length and weight between the 2nd and 3rd group. As mentioned previously, the life cycle of Baikal amphipods is generally quite long, i.e. the life cycle of the mass species 
<taxonomicName id="F38C4D7FE0685D7B2B9ABAE89EA291FD" box="[242,455,1435,1460]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="23" pageNumber="541" phylum="Arthropoda" rank="genus">
<emphasis id="06F8EAEEE0685D7B2B9ABAE89EA291FD" box="[242,455,1435,1460]" italics="true" pageId="23" pageNumber="541">Eulimnogammarus</emphasis>
</taxonomicName>
of the littoral zone is 3 to 5 years (
<bibRefCitation id="501D4B0DE0685D7B2803BAE89B2D91FD" author="Govorukhina" box="[875,1096,1435,1460]" pageId="23" pageNumber="541" refString="Govorukhina, E. B. (2005) Biology of reproduction, seasonal and diurnal dynamics of the populations of the litoral and sublitoral amphipod species in Lake Baikal, PhD Thesis. Irkutsk State University, Irkutsk, 19 pp. [in Russian]" type="book" year="2005">Govorukhina 2005</bibRefCitation>
). It is possible that 2nd-stage 
<taxonomicName id="F38C4D7FE0685D7B2BFFBAB39E0E9191" box="[151,363,1471,1496]" class="Malacostraca" family="Eulimnogammaridae" genus="Eulimnogammarus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Amphipoda" pageId="23" pageNumber="541" phylum="Arthropoda" rank="species" species="messerschmidtii" status="sp. nov.">
<emphasis id="06F8EAEEE0685D7B2BFFBAB39E0E9191" box="[151,363,1471,1496]" italics="true" pageId="23" pageNumber="541">E. messerschmidtii</emphasis>
</taxonomicName>
<emphasis id="06F8EAEEE0685D7B2A1CBACC9ED29191" bold="true" box="[372,439,1471,1496]" pageId="23" pageNumber="541">
<taxonomicNameLabel id="1DCB5795E0685D7B2A1CBACC9ED29191" box="[372,439,1471,1496]" pageId="23" pageNumber="541" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
females that were collected in June belong to the previous year’s generation and that females in the 3rd stage (participated in reproduction) are older and are aged almost two years.
</paragraph>
<paragraph id="343336FCE0685D7B2BAFB9749BF99221" blockId="23.[151,1437,1069,1856]" pageId="23" pageNumber="541">
The mean index of the absolute one-time fertility is 18.0±1.2 eggs (n=88), and the index fluctuates from 5 to 
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eggs, depending on size. The increase in fertility correlates exponentially with increasing body size and almost proportionally to increasing body mass (
<tableCitation id="790E0347E0685D7B2932B93C9DCB9221" box="[602,686,1615,1640]" captionStart="TABLE 1" captionStartId="23.[151,239,152,175]" captionText="TABLE 1. Size, weight and fertility of Eulimnogammarus messerschmidtii sp. n. from Kharin-Irgi bay (22.06.2002)." pageId="23" pageNumber="541">Table 1</tableCitation>
). The relative one-time fertility was 12.8%.
</paragraph>
<paragraph id="343336FCE0685D7B2BAFB9009F8F929D" blockId="23.[151,1437,1069,1856]" pageId="23" pageNumber="541">
The small sample from point 2 (Cape Bolshoy Solontsovy) included specimens of the following body lengths: males, 12.0− 
<quantity id="F3749B19E0685D7B2A40B9E49EEA92E6" box="[296,399,1687,1712]" metricMagnitude="-2" metricUnit="m" metricValue="1.56" pageId="23" pageNumber="541" unit="mm" value="15.6">15.6 mm</quantity>
, mean 13.5± 
<quantity id="F3749B19E0685D7B294BB9E49D1C92E6" box="[547,633,1687,1712]" metricMagnitude="-3" metricUnit="m" metricValue="1.3" pageId="23" pageNumber="541" unit="mm" value="1.3">1.3 mm</quantity>
(n=6); females at 3rd −5th stage, 
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, mean 12.9± 
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(n=12).
</paragraph>
<paragraph id="343336FCE0685D7B2BAFB9AC9E599309" blockId="23.[151,1437,1069,1856]" pageId="23" pageNumber="541">
Specimens from the 
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sampling point (Tyya River delta) were larger: males, 16.0−18.0 mm; females, 2nd stage, 
<quantity id="F3749B19E0685D7B2B89B8709EEF9352" box="[225,394,1795,1820]" metricMagnitude="-2" metricUnit="m" metricValue="1.565" metricValueMax="1.75" metricValueMin="1.38" pageId="23" pageNumber="541" unit="mm" value="15.65" valueMax="17.5" valueMin="13.8">13.8−17.5 mm</quantity>
, a female in the 5th stage, 
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. Evidently, only older specimens were collected from points 1 and 2.
</paragraph>
</subSubSection>
</treatment>
</document>