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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1010.58759" ID-GBIF-Dataset="991ddda8-cc57-4ef5-8ada-5ea378885925" ID-PMC="PMC7817654" ID-Pensoft-Pub="1313-2970-1010-1" ID-Pensoft-UUID="D317557D854C577289AA424187C079D2" ID-PubMed="33531857" ID-ZooBank="45DF30C9AEB448AAAC32BBE77CB7191D" ModsDocID="1313-2970-1010-1" checkinTime="1610662641170" checkinUser="pensoft" docAuthor="Albano, Paolo G., Steger, Jan, Bakker, Piet A. J., Bogi, Cesare, Bosnjak, Marija, Guy-Haim, Tamar, Huseyinoglu, Mehmet Fatih, LaFollette, Patrick I., Lubinevsky, Hadas, Mulas, Martina, Stockinger, Martina, Azzarone, Michele &amp; Sabelli, Bruno" docDate="2021" docId="A0903FAE8EAA5AF6A23A69715849109C" docLanguage="en" docName="ZooKeys 1010: 1-95" docOrigin="ZooKeys 1010" docPubDate="2021-01-13" docSource="http://dx.doi.org/10.3897/zookeys.1010.58759" docTitle="Musculus viridulus" docType="treatment" docVersion="5" id="D317557D854C577289AA424187C079D2" lastPageNumber="1" masterDocId="D317557D854C577289AA424187C079D2" masterDocTitle="Numerous new records of tropical non-indigenous species in the Eastern Mediterranean highlight the challenges of their recognition and identification" masterLastPageNumber="95" masterPageNumber="1" pageNumber="1" updateTime="1668149698000" updateUser="ExternalLinkService">
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<mods:titleInfo>
<mods:title>Numerous new records of tropical non-indigenous species in the Eastern Mediterranean highlight the challenges of their recognition and identification</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Albano, Paolo G.</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-9876-1024</mods:nameIdentifier>
<mods:affiliation>Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria</mods:affiliation>
<mods:nameIdentifier type="email">pgalbano@gmail.com</mods:nameIdentifier>
</mods:name>
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<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Steger, Jan</mods:namePart>
<mods:affiliation>Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Bakker, Piet A. J.</mods:namePart>
<mods:affiliation>Naturalis Biodiversity Center, Darwinweg 2, 2333, CR Leiden, The Netherlands</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Bogi, Cesare</mods:namePart>
<mods:affiliation>Gruppo Malacologico Livornese, c / o Museo di Storia Naturale del Mediterraneo, via Roma 234, 57127, Livorno, Italy</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Bosnjak, Marija</mods:namePart>
<mods:affiliation>Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria &amp; Croatian Natural History Museum, Demetrova 1, Zagreb, Croatia</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Guy-Haim, Tamar</mods:namePart>
<mods:affiliation>National Institute of Oceanography, Israel Oceanographic and Limnological Research (IOLR), Haifa 3108001, Israel</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Huseyinoglu, Mehmet Fatih</mods:namePart>
<mods:affiliation>Faculty of Maritime Studies, University of Kyrenia, Karakum, Girne, Turkish Republic of Northern Cyprus</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>LaFollette, Patrick I.</mods:namePart>
<mods:affiliation>Malacology Section, Natural History Museum of Los Angeles County, 900 Exposition Blvd., Los Angeles, CA 90007, USA</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Lubinevsky, Hadas</mods:namePart>
<mods:affiliation>National Institute of Oceanography, Israel Oceanographic and Limnological Research (IOLR), Haifa 3108001, Israel</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Mulas, Martina</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-9228-786X</mods:nameIdentifier>
<mods:affiliation>National Institute of Oceanography, Israel Oceanographic and Limnological Research (IOLR), Haifa 3108001, Israel &amp; The Leon H. Charney School of Marine Sciences, University of Haifa, 199 Aba Khoushy Ave., Mt. Carmel, Haifa 3498838, Israel</mods:affiliation>
</mods:name>
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<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Stockinger, Martina</mods:namePart>
<mods:affiliation>Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Azzarone, Michele</mods:namePart>
<mods:affiliation>Department of Palaeontology, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Sabelli, Bruno</mods:namePart>
<mods:affiliation>Museo di Zoologia dell'Universita di Bologna, via Selmi 3, 40126, Bologna, Italy</mods:affiliation>
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<mods:title>ZooKeys</mods:title>
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<mods:date>2021</mods:date>
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<mods:number>2021-01-13</mods:number>
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<mods:detail type="volume">
<mods:number>1010</mods:number>
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<mods:url>http://dx.doi.org/10.3897/zookeys.1010.58759</mods:url>
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<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1010.58759</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-1010-1</mods:identifier>
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<treatment ID-GBIF-Taxon="176584187" LSID="urn:lsid:plazi:treatment:A0903FAE8EAA5AF6A23A69715849109C" httpUri="http://treatment.plazi.org/id/A0903FAE8EAA5AF6A23A69715849109C" lastPageNumber="1" pageId="0" pageNumber="1">
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<taxonomicName LSID="A0903FAE-8EAA-5AF6-A23A-69715849109C" authority="(H. Adams, 1871)" baseAuthorityName="H. Adams" baseAuthorityYear="1871" class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus viridulus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="viridulus">Musculus aff. viridulus (H. Adams, 1871)</taxonomicName>
<figureCitation captionStart="Figure 36" captionStartId="F36" captionText="Figure 36. Comparison between Musculus aff. viridulus (H. Adams, 1871) and Musculus costulatus (Risso, 1826) A-E Musculus aff. viridulus, west of Rosh HaNikra Islands, Israel, HELM project (sample S 52 _ 3 L): left valve outer (A, B) and inner (D) views, right valve inner (C) and outer (E) views F-H Musculus aff. viridulus, dive site &quot; Caves &quot;, Dahab, Sinai, Egypt: left valve outer (F, G) and inner (H) views I-M Musculus costulatus, west of Rosh HaNikra Islands, Israel, HELM project (sample S 53 _ 2 L): left valve outer (I, J) and inner (L) views, right valve inner (K) and outer (M) views. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1010.58759.figure36" httpUri="https://binary.pensoft.net/fig/496989" pageId="0" pageNumber="1">Figure 36A-E</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="new records">
<paragraph pageId="0" pageNumber="1">New records.</paragraph>
<paragraph pageId="0" pageNumber="1">
Israel • 1 spcm; Ashqelon;
<geoCoordinate degrees="31.6891" direction="north" orientation="latitude" precision="5" value="31.6891">31.6891°N</geoCoordinate>
,
<geoCoordinate degrees="34.5257" direction="east" orientation="longitude" precision="5" value="34.5257">34.5257°E</geoCoordinate>
; depth 25 m; 2 May 2018; offshore rocky reef; suction sampler; HELM project (sample S16_2F) • 15 spcms; same collecting data as for preceding; depth 28 m; 31 Oct. 2018; HELM project (samples S59_1F, S59_1M, S59_2F, S59_2M) • 2 spcms; west of Rosh HaNikra Islands;
<geoCoordinate degrees="33.0704" direction="north" orientation="latitude" precision="5" value="33.0704">33.0704°N</geoCoordinate>
,
<geoCoordinate degrees="35.0926" direction="east" orientation="longitude" precision="5" value="35.0926">35.0926°E</geoCoordinate>
; depth 12 m; 1 May 2018; rocky substrate; suction sampler; HELM project (samples S14_3F, S14_4M) • 25 spcms; same collecting data as for preceding; 29 Oct. 2018; HELM project (samples S52_1F, S52_2F, S52_2M, S52_2L, S52_3F, S52_3M, S52_3L); size: L 3.6 mm, H 2.1 mm (illustrated specimen, Figure
<figureCitation captionStart="Figure 36" captionStartId="F36" captionText="Figure 36. Comparison between Musculus aff. viridulus (H. Adams, 1871) and Musculus costulatus (Risso, 1826) A-E Musculus aff. viridulus, west of Rosh HaNikra Islands, Israel, HELM project (sample S 52 _ 3 L): left valve outer (A, B) and inner (D) views, right valve inner (C) and outer (E) views F-H Musculus aff. viridulus, dive site &quot; Caves &quot;, Dahab, Sinai, Egypt: left valve outer (F, G) and inner (H) views I-M Musculus costulatus, west of Rosh HaNikra Islands, Israel, HELM project (sample S 53 _ 2 L): left valve outer (I, J) and inner (L) views, right valve inner (K) and outer (M) views. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1010.58759.figure36" httpUri="https://binary.pensoft.net/fig/496989" pageId="0" pageNumber="1">36A-E</figureCitation>
) • 1 spcm; west of Rosh HaNikra Islands;
<geoCoordinate degrees="33.0725" direction="north" orientation="latitude" precision="5" value="33.0725">33.0725°N</geoCoordinate>
,
<geoCoordinate degrees="35.0923" direction="east" orientation="longitude" precision="5" value="35.0923">35.0923°E</geoCoordinate>
; depth 20 m; 1 May 2018; rocky substrate; suction sampler; HELM project (sample S13_3M) • 9 spcms; same collecting data as for preceding; depth 19 m; 29 Oct. 2018; HELM project (samples S53_1F, S53_2F, S53_2M, S53_3F, S53_3M).
</paragraph>
<caption doi="10.3897/zookeys.1010.58759.figure36" httpUri="https://binary.pensoft.net/fig/496989" pageId="0" pageNumber="1" start="Figure 36" startId="F36">
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Figure 36.</emphasis>
Comparison between
<taxonomicName baseAuthorityName="H. Adams" baseAuthorityYear="1871" class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus viridulus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="viridulus">Musculus aff. viridulus</taxonomicName>
(H. Adams, 1871) and
<taxonomicName baseAuthorityName="Risso" baseAuthorityYear="1826" class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus costulatus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="costulatus">
<emphasis italics="true" pageId="0" pageNumber="1">Musculus costulatus</emphasis>
</taxonomicName>
(Risso, 1826)
<emphasis bold="true" pageId="0" pageNumber="1">A-E</emphasis>
<taxonomicName baseAuthorityName="H. Adams" baseAuthorityYear="1871" class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus viridulus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="viridulus">Musculus aff. viridulus</taxonomicName>
, west of Rosh HaNikra Islands, Israel, HELM project (sample S52_3L): left valve outer (
<emphasis bold="true" pageId="0" pageNumber="1">A, B</emphasis>
) and inner (
<emphasis bold="true" pageId="0" pageNumber="1">D</emphasis>
) views, right valve inner (
<emphasis bold="true" pageId="0" pageNumber="1">C</emphasis>
) and outer (
<emphasis bold="true" pageId="0" pageNumber="1">E</emphasis>
) views
<emphasis bold="true" pageId="0" pageNumber="1">F-H</emphasis>
<taxonomicName baseAuthorityName="H. Adams" baseAuthorityYear="1871" class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus viridulus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="viridulus">Musculus aff. viridulus</taxonomicName>
, dive site
<normalizedToken originalValue="“Caves”">&quot;Caves&quot;</normalizedToken>
, Dahab, Sinai, Egypt: left valve outer (
<emphasis bold="true" pageId="0" pageNumber="1">F, G</emphasis>
) and inner (
<emphasis bold="true" pageId="0" pageNumber="1">H</emphasis>
) views
<emphasis bold="true" pageId="0" pageNumber="1">I-M</emphasis>
<taxonomicName baseAuthorityName="Risso" baseAuthorityYear="1826" class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus costulatus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="costulatus">
<emphasis italics="true" pageId="0" pageNumber="1">Musculus costulatus</emphasis>
</taxonomicName>
, west of Rosh HaNikra Islands, Israel, HELM project (sample S53_2L): left valve outer (
<emphasis bold="true" pageId="0" pageNumber="1">I, J</emphasis>
) and inner (
<emphasis bold="true" pageId="0" pageNumber="1">L</emphasis>
) views, right valve inner (
<emphasis bold="true" pageId="0" pageNumber="1">K</emphasis>
) and outer (
<emphasis bold="true" pageId="0" pageNumber="1">M</emphasis>
) views. Scale bars: 1 mm.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="materials_examined">
<paragraph pageId="0" pageNumber="1">Additional material examined.</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName baseAuthorityName="H. Adams" baseAuthorityYear="1871" class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus viridulus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="viridulus">Musculus aff. viridulus</taxonomicName>
: Egypt • 1 v; Sinai (Red Sea), Dahab, dive site
<normalizedToken originalValue="“Caves”">&quot;Caves&quot;</normalizedToken>
;
<geoCoordinate degrees="28.416" direction="north" orientation="latitude" precision="55" value="28.416">28.416°N</geoCoordinate>
,
<geoCoordinate degrees="34.456" direction="east" orientation="longitude" precision="55" value="34.456">34.456°E</geoCoordinate>
; depth 15 m; 2015; H. Blatterer leg. • 4 vv; same collecting data as for preceding; depth 17-19 m; 2016; H. Blatterer leg. • 2 vv; same collecting data as for preceding; depth 18 m; 2017; H. Blatterer leg. • 1 v; Sinai (Red Sea), Dahab, dive site &quot;Golden Blocks&quot;;
<geoCoordinate degrees="28.436" direction="north" orientation="latitude" precision="55" value="28.436">28.436°N</geoCoordinate>
,
<geoCoordinate degrees="34.459" direction="east" orientation="longitude" precision="55" value="34.459">34.459°E</geoCoordinate>
; depth 18 m; 2018; H. Blatterer leg.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName baseAuthorityName="Risso" baseAuthorityYear="1826" class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus costulatus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="costulatus">
<emphasis italics="true" pageId="0" pageNumber="1">Musculus costulatus</emphasis>
</taxonomicName>
(Risso, 1826): Israel • 9 spcms, 4 vv; Ashqelon;
<geoCoordinate degrees="31.6868" direction="north" orientation="latitude" precision="5" value="31.6868">31.6868°N</geoCoordinate>
,
<geoCoordinate degrees="34.5516" direction="east" orientation="longitude" precision="5" value="34.5516">34.5516°E</geoCoordinate>
; depth 12 m; 30 Apr. 2018; offshore rocky reef; suction sampler; HELM project (samples S12_1F, S12_1M, S12_1L, S12_2F, S12_2M) • 3 spcms; Ashqelon;
<geoCoordinate degrees="31.6891" direction="north" orientation="latitude" precision="5" value="31.6891">31.6891°N</geoCoordinate>
,
<geoCoordinate degrees="34.5257" direction="east" orientation="longitude" precision="5" value="34.5257">34.5257°E</geoCoordinate>
; depth 25 m; 2 May 2018; offshore rocky reef; suction sampler; HELM project (samples S16_1F, S16_2F) • 1 spcm; same collecting data as for preceding; depth 28 m; 31 Oct. 2018; HELM project (sample S59_1M) • 5 spcms; west of Rosh HaNikra Islands;
<geoCoordinate degrees="33.0704" direction="north" orientation="latitude" precision="5" value="33.0704">33.0704°N</geoCoordinate>
,
<geoCoordinate degrees="35.0926" direction="east" orientation="longitude" precision="5" value="35.0926">35.0926°E</geoCoordinate>
; depth 12 m; 1 May 2018; rocky substrate; suction sampler; HELM project (samples S14_1L, S14_3F, S14_3L, S14_4F) • 56 spcms; same collecting data as for preceding; 29 Oct. 2018; HELM project (samples S52_1F, S52_1M, S52_1L, S52_2F, S52_2M, S52_2L, S52_3F, S52_3M, S52_3L) • 1 v; west of Rosh HaNikra Islands;
<geoCoordinate degrees="33.0725" direction="north" orientation="latitude" precision="5" value="33.0725">33.0725°N</geoCoordinate>
,
<geoCoordinate degrees="35.0923" direction="east" orientation="longitude" precision="5" value="35.0923">35.0923°E</geoCoordinate>
; depth 20 m; 1 May 2018; rocky substrate; suction sampler; HELM project (sample S13_3F) • 20 spcms; same collecting data as for preceding; depth 19 m; 29 Oct. 2018; HELM project (sample S53_2L).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="remarks">
<paragraph pageId="0" pageNumber="1">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="1">
We report numerous living individuals of
<taxonomicName baseAuthorityName="H. Adams" baseAuthorityYear="1871" class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus viridulus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="viridulus">Musculus aff. viridulus</taxonomicName>
from the Mediterranean Israeli coastline. It is the first record of this Indo-Pacific species in the Mediterranean Sea. This species can be readily distinguished from the native
<taxonomicName lsidName="M. costulatus" pageId="0" pageNumber="1" rank="species" species="costulatus">
<emphasis italics="true" pageId="0" pageNumber="1">M. costulatus</emphasis>
</taxonomicName>
because the latter has a more oval outline and a much smaller number of riblets at the same overall shell size (Figure
<figureCitation captionStart="Figure 36" captionStartId="F36" captionText="Figure 36. Comparison between Musculus aff. viridulus (H. Adams, 1871) and Musculus costulatus (Risso, 1826) A-E Musculus aff. viridulus, west of Rosh HaNikra Islands, Israel, HELM project (sample S 52 _ 3 L): left valve outer (A, B) and inner (D) views, right valve inner (C) and outer (E) views F-H Musculus aff. viridulus, dive site &quot; Caves &quot;, Dahab, Sinai, Egypt: left valve outer (F, G) and inner (H) views I-M Musculus costulatus, west of Rosh HaNikra Islands, Israel, HELM project (sample S 53 _ 2 L): left valve outer (I, J) and inner (L) views, right valve inner (K) and outer (M) views. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1010.58759.figure36" httpUri="https://binary.pensoft.net/fig/496989" pageId="0" pageNumber="1">36</figureCitation>
). These riblets are also much larger compared to
<taxonomicName lsidName="M. viridulus" pageId="0" pageNumber="1" rank="species" species="viridulus">M. aff. viridulus</taxonomicName>
. The Atlanto-Mediterranean
<taxonomicName lsidName="M. discors" pageId="0" pageNumber="1" rank="species" species="discors">
<emphasis italics="true" pageId="0" pageNumber="1">M. discors</emphasis>
</taxonomicName>
(Linnaeus, 1767) has a similarly fine posterior sculpture but at the same size is much higher and at all sizes bears much more prominent riblets anteriorly. The taxonomy of
<taxonomicName class="Bivalvia" family="Mytilidae" genus="Musculus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Musculus" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Musculus</emphasis>
</taxonomicName>
in the Indo-Pacific province is not settled and the available images of Red Sea
<taxonomicName lsidName="M. viridulus" pageId="0" pageNumber="1" rank="species" species="viridulus">
<emphasis italics="true" pageId="0" pageNumber="1">M. viridulus</emphasis>
</taxonomicName>
(
<bibRefCitation author="Oliver, PG" journalOrPublisher="Tokai University Press, Tokyo" pageId="0" pageNumber="1" refId="B166" refString="Oliver, PG, 1992. Bivalved seashells of the Red Sea. Verlag Christa Hemmen, 330 pp." title="Bivalved seashells of the Red Sea. Verlag Christa Hemmen, 330 pp." year="1992">Oliver 1992</bibRefCitation>
;
<bibRefCitation author="Zuschin, M" journalOrPublisher="The Northern Bay of Safaga (Red Sea, Egypt): An actuopalaeontological approach. VI. Bivalvia. Naturhistorisches Museum Wien" pageId="0" pageNumber="1" refId="B231" refString="Zuschin, M, Oliver, PG, 2003. Bivalves and bivalve habitats in the northern Red Sea. The Northern Bay of Safaga (Red Sea, Egypt): An actuopalaeontological approach. VI. Bivalvia. Naturhistorisches Museum Wien" title="Bivalves and bivalve habitats in the northern Red Sea." year="2003">Zuschin and Oliver 2003</bibRefCitation>
) show a more oval species, hence our dubitative identification. Still, we are confident that this is a Red Sea species because we examined indistinguishable specimens from the northern Red Sea (Figure
<figureCitation captionStart="Figure 36" captionStartId="F36" captionText="Figure 36. Comparison between Musculus aff. viridulus (H. Adams, 1871) and Musculus costulatus (Risso, 1826) A-E Musculus aff. viridulus, west of Rosh HaNikra Islands, Israel, HELM project (sample S 52 _ 3 L): left valve outer (A, B) and inner (D) views, right valve inner (C) and outer (E) views F-H Musculus aff. viridulus, dive site &quot; Caves &quot;, Dahab, Sinai, Egypt: left valve outer (F, G) and inner (H) views I-M Musculus costulatus, west of Rosh HaNikra Islands, Israel, HELM project (sample S 53 _ 2 L): left valve outer (I, J) and inner (L) views, right valve inner (K) and outer (M) views. Scale bars: 1 mm." figureDoi="10.3897/zookeys.1010.58759.figure36" httpUri="https://binary.pensoft.net/fig/496989" pageId="0" pageNumber="1">36F-H</figureCitation>
).
<bibRefCitation author="Blatterer, H" journalOrPublisher="Denisia" pageId="0" pageNumber="1" pagination="1 - 480" refId="B35" refString="Blatterer, H, 2019. Mollusca of the Dahab region (Gulf of Aqaba, Red Sea). Denisia 43: 1 - 480" title="Mollusca of the Dahab region (Gulf of Aqaba, Red Sea)." volume="43" year="2019">Blatterer (2019)</bibRefCitation>
illustrated these and other similar specimens (plate 10, fig. 18a, b) as
<taxonomicName baseAuthorityName="Issel" baseAuthorityYear="1869" class="Bivalvia" family="Mytilidae" genus="Gregariella" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" lsidName="Gregariella ehrenbergi" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="ehrenbergi">
<emphasis italics="true" pageId="0" pageNumber="1">Gregariella ehrenbergi</emphasis>
</taxonomicName>
(Issel, 1869). We recorded a morphologically distinct species as
<taxonomicName lsidName="G. ehrenbergi" pageId="0" pageNumber="1" rank="species" species="ehrenbergi">
<emphasis italics="true" pageId="0" pageNumber="1">G. ehrenbergi</emphasis>
</taxonomicName>
from a buoy stranded on the Israeli coastline (
<bibRefCitation DOI="https://doi.org/10.3391/bir.2018.7.3.05" author="Steger, J" journalOrPublisher="BioInvasions Records" pageId="0" pageNumber="1" pagination="245 - 257" refId="B213" refString="Steger, J, Stockinger, M, Ivkic, A, Galil, B, Albano, PG, 2018. New records of non-indigenous molluscs from the eastern Mediterranean Sea. BioInvasions Records 7: 245 - 257, DOI: https://doi.org/10.3391/bir.2018.7.3.05" title="New records of non-indigenous molluscs from the eastern Mediterranean Sea." url="https://doi.org/10.3391/bir.2018.7.3.05" volume="7" year="2018">Steger et al. 2018</bibRefCitation>
;
<bibRefCitation DOI="https://doi.org/10.1007/s10530-019-01972-4" author="Ivkic, A" journalOrPublisher="Biological Invasions" pageId="0" pageNumber="1" pagination="1887 - 1893" refId="B113" refString="Ivkic, A, Steger, J, Galil, BS, Albano, PG, 2019. The potential of large rafting objects to spread Lessepsian invaders: the case of a detached buoy. Biological Invasions 21: 1887 - 1893, DOI: https://doi.org/10.1007/s10530-019-01972-4" title="The potential of large rafting objects to spread Lessepsian invaders: the case of a detached buoy." url="https://doi.org/10.1007/s10530-019-01972-4" volume="21" year="2019">
<normalizedToken originalValue="Ivkić">Ivkic</normalizedToken>
et al. 2019
</bibRefCitation>
).
<taxonomicName baseAuthorityName="Issel" baseAuthorityYear="1869" class="Bivalvia" family="Mytilidae" genus="Gregariella" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" lsidName="Gregariella ehrenbergi" order="Mytilida" pageId="0" pageNumber="1" phylum="Mollusca" rank="species" species="ehrenbergi">
<emphasis italics="true" pageId="0" pageNumber="1">Gregariella ehrenbergi</emphasis>
</taxonomicName>
type material is corroded by
<normalizedToken originalValue="Bynes">Byne's</normalizedToken>
disease and the original description likely refers to a juvenile specimen; the identity of this species deserves further scrutiny.
</paragraph>
</subSubSection>
</treatment>
</document>