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<mods:title id="A796E1EF3F5E9B40ADDFCE972D39BB66">A revision of the genus Cheliplana de Beauchamp, 1927 (Rhabdocoela: Schizorhynchia), with the description of six new species</mods:title>
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<heading id="D0BE81F11862FF8762BE1C7EFDDECE58" bold="true" box="[151,603,582,609]" fontSize="11" level="1" pageId="21" pageNumber="474" reason="1">
<taxonomicName id="4C494D1E1862FF8762BE1C7EFDDECE58" authority="Evdonin, 1977" authorityName="Evdonin" authorityYear="1977" box="[151,603,582,609]" class="Rhabditophora" family="Karkinorhynchidae" genus="Cheliplana" kingdom="Animalia" order="Rhabdocoela" pageId="21" pageNumber="474" phylum="Platyhelminthes" rank="species" species="mamkaevi">
<emphasis id="B93DEA8F1862FF8762BE1C7EFDDECE58" bold="true" box="[151,603,582,609]" pageId="21" pageNumber="474">
<emphasis id="B93DEA8F1862FF8762BE1C7EFE25CE59" bold="true" box="[151,416,582,609]" italics="true" pageId="21" pageNumber="474">Cheliplana mamkaevi</emphasis>
<bibRefCitation id="EFD84B6C1862FF87638E1C7EFDDECE58" author="Evdonin, L. A." box="[423,603,582,608]" pageId="21" pageNumber="474" pagination="1 - 400" refId="ref36594" refString="Evdonin, L. A. (1977) Monograph of the Turbellaria Kalyptorhynchia in the fauna of the USSR and adjacent areas. Fauna USSR, Turbellaria, 1 (Pt. 1.), New Series, 115, 1 - 400." type="journal article" year="1977">Evdonin, 1977</bibRefCitation>
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<emphasis id="B93DEA8F1862FF8762BE1CB6FEFCCE90" bold="true" box="[151,377,654,680]" pageId="21" pageNumber="474">Material examined</emphasis>
. None.
</paragraph>
<paragraph id="8BF6369D1862FF8762EE1C8BFC2BCF01" blockId="21.[151,1437,654,1581]" pageId="21" pageNumber="474">
<emphasis id="B93DEA8F1862FF8762EE1C8BFE36CEF4" bold="true" box="[199,435,690,717]" pageId="21" pageNumber="474">Known distribution</emphasis>
. Putyatin Island, Peter the Great Gulf,
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(
<bibRefCitation id="EFD84B6C1862FF8761E81C8BFBE0CEF5" author="Evdonin, L. A." box="[961,1125,691,717]" pageId="21" pageNumber="474" pagination="1 - 400" refId="ref36594" refString="Evdonin, L. A. (1977) Monograph of the Turbellaria Kalyptorhynchia in the fauna of the USSR and adjacent areas. Fauna USSR, Turbellaria, 1 (Pt. 1.), New Series, 115, 1 - 400." type="journal article" year="1977">Evdonin 1977</bibRefCitation>
). Kunashir Island, Pacific Coast,
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(
<bibRefCitation id="EFD84B6C1862FF8760AA1CEFFCA2CEC9" author="Evdonin, L. A." box="[643,807,727,753]" pageId="21" pageNumber="474" pagination="1 - 400" refId="ref36594" refString="Evdonin, L. A. (1977) Monograph of the Turbellaria Kalyptorhynchia in the fauna of the USSR and adjacent areas. Fauna USSR, Turbellaria, 1 (Pt. 1.), New Series, 115, 1 - 400." type="journal article" year="1977">Evdonin 1977</bibRefCitation>
). Kronocka Bay,
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,
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(
<bibRefCitation id="EFD84B6C1862FF8760F91CC3FCF1CF2D" author="Evdonin, L. A." box="[720,884,763,789]" pageId="21" pageNumber="474" pagination="1 - 400" refId="ref36594" refString="Evdonin, L. A. (1977) Monograph of the Turbellaria Kalyptorhynchia in the fauna of the USSR and adjacent areas. Fauna USSR, Turbellaria, 1 (Pt. 1.), New Series, 115, 1 - 400." type="journal article" year="1977">Evdonin 1977</bibRefCitation>
). Anadyrsk and Olindorstvik, Bering Strait,
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(
<bibRefCitation id="EFD84B6C1862FF8760D41D27FC24CF01" author="Evdonin, L. A." box="[765,929,799,825]" pageId="21" pageNumber="474" pagination="1 - 400" refId="ref36594" refString="Evdonin, L. A. (1977) Monograph of the Turbellaria Kalyptorhynchia in the fauna of the USSR and adjacent areas. Fauna USSR, Turbellaria, 1 (Pt. 1.), New Series, 115, 1 - 400." type="journal article" year="1977">Evdonin 1977</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="C35365161862FF8762EE1D7BFDF9CA15" pageId="21" pageNumber="474" type="discussion">
<paragraph id="8BF6369D1862FF8762EE1D7BFB31CF9D" blockId="21.[151,1437,654,1581]" pageId="21" pageNumber="474">
<emphasis id="B93DEA8F1862FF8762EE1D7BFD13CF64" bold="true" box="[199,662,834,861]" pageId="21" pageNumber="474">Remarks (summarised from literature)</emphasis>
. Specimens are up to
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long. The proboscis is armed with a pair of sclerotised 1028-µm-long hooks. The proboscis sidepieces are not sclerotised and of the same length as the hook supports. The post-rostral bulb measures approximately twice the length of the hook supports.
</paragraph>
<paragraph id="8BF6369D1862FF8762EE1D97FE7BC899" blockId="21.[151,1437,654,1581]" pageId="21" pageNumber="474">The pharynx bears eight tubercles or papillae on its anterior rim. The prepharyngeal tube is armed with numerous small spines. The common genital opening lies at 75%. An unpaired testis is situated dorsal to the prepharyngeal cavity. A pair of seminal vesicles enters the proximal end of the oviform, 100-µm-long copulatory bulb to form an internal seminal vesicle. This internal seminal vesicle bears two blind-ending pockets, which envelop a small prostatic vesicle, containing coarse-grained secretion in the middle part and fine-grained secretion peripherally. Distally, the ejaculatory duct forms a sclerotised, 3060-µm-long cirrus. The spines of the cirrus measure 1014 μm proximally and 57 μm distally.</paragraph>
<paragraph id="8BF6369D1862FF8762EE1A93FCD8C8D1" blockId="21.[151,1437,654,1581]" pageId="21" pageNumber="474">
A single ovary is situated caudally to the copulatory apparatus.
<bibRefCitation id="EFD84B6C1862FF8761801A93FBD9C8FD" author="Evdonin, L. A." box="[937,1116,1195,1221]" pageId="21" pageNumber="474" pagination="1 - 400" refId="ref36594" refString="Evdonin, L. A. (1977) Monograph of the Turbellaria Kalyptorhynchia in the fauna of the USSR and adjacent areas. Fauna USSR, Turbellaria, 1 (Pt. 1.), New Series, 115, 1 - 400." type="journal article" year="1977">Evdonin (1977)</bibRefCitation>
mentions the presence of a vagina interna, which connects to a bursa adjacent to the ovary.
</paragraph>
<paragraph id="8BF6369D1862FF8762EE1ACBFDF9CA15" blockId="21.[151,1437,654,1581]" pageId="21" pageNumber="474">
The copulatory apparatus resembles that of
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<emphasis id="B93DEA8F1862FF8760931ACBFCD0C935" box="[698,853,1267,1293]" italics="true" pageId="21" pageNumber="474">C. gemmifera</emphasis>
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in its general organisation. The short, armed cirrus and the internal seminal vesicle in the copulatory bulb as drawn by
<bibRefCitation id="EFD84B6C1862FF87618A1B2FFBD3C909" author="Evdonin, L. A." box="[931,1110,1303,1329]" pageId="21" pageNumber="474" pagination="1 - 400" refId="ref36594" refString="Evdonin, L. A. (1977) Monograph of the Turbellaria Kalyptorhynchia in the fauna of the USSR and adjacent areas. Fauna USSR, Turbellaria, 1 (Pt. 1.), New Series, 115, 1 - 400." type="journal article" year="1977">Evdonin (1977)</bibRefCitation>
are nearly identical to those in
<taxonomicName id="4C494D1E1862FF87629F1B03FED7C96D" authorityName="Noldt" authorityYear="1989" box="[182,338,1339,1365]" class="Rhabditophora" family="Karkinorhynchidae" genus="Cheliplana" kingdom="Animalia" order="Rhabdocoela" pageId="21" pageNumber="474" phylum="Platyhelminthes" rank="species" species="gemmifera">
<emphasis id="B93DEA8F1862FF87629F1B03FED7C96D" box="[182,338,1339,1365]" italics="true" pageId="21" pageNumber="474">C. gemmifera</emphasis>
</taxonomicName>
.
<bibRefCitation id="EFD84B6C1862FF87634B1B03FE70C96D" author="Noldt, U." box="[354,501,1339,1365]" pageId="21" pageNumber="474" pagination="7 - 85" refId="ref37406" refString="Noldt, U. (1989) Kalyptorhynchia (Plathelminthes) from sublittoral coastal areas near the island of Sylt (North Sea) I. Schizorhynchia. Microfauna Marina, 5, 7 - 85." type="journal article" year="1989">Noldt (1989)</bibRefCitation>
discusses these similarities, but raises a number of differences distinguishing the species, including the different sizes and structures of the copulatory bulb and the presence of a vagina interna in
<taxonomicName id="4C494D1E1862FF8767AA1B67FE8CC9A5" authorityName="Evdonin" authorityYear="1977" class="Rhabditophora" family="Karkinorhynchidae" genus="Cheliplana" kingdom="Animalia" order="Rhabdocoela" pageId="21" pageNumber="474" phylum="Platyhelminthes" rank="species" species="mamkaevi">
<emphasis id="B93DEA8F1862FF8767AA1B67FE8CC9A5" italics="true" pageId="21" pageNumber="474">C. mamkaevi</emphasis>
</taxonomicName>
. The new specimens of
<taxonomicName id="4C494D1E1862FF8760371BBBFD3DC9A5" authorityName="Noldt" authorityYear="1989" box="[542,696,1411,1437]" class="Rhabditophora" family="Karkinorhynchidae" genus="Cheliplana" kingdom="Animalia" order="Rhabdocoela" pageId="21" pageNumber="474" phylum="Platyhelminthes" rank="species" species="gemmifera">
<emphasis id="B93DEA8F1862FF8760371BBBFD3DC9A5" box="[542,696,1411,1437]" italics="true" pageId="21" pageNumber="474">C. gemmifera</emphasis>
</taxonomicName>
(see earlier) did not allow study of the female system or detailed observations of the copulatory bulbs fine structure. Without additional study of the
<typeStatus id="54F2883F1862FF87661E1B9FFBE2C9F9" box="[1079,1127,1447,1473]" pageId="21" pageNumber="474">type</typeStatus>
material or newly collected material, we refrain from synonymizing the two species. Certainly, the similarities between the two species, in particular the properties of the lobed internal seminal vesicle and prostatic glands, are striking and the two species, if indeed distinct, are likely closely related.
</paragraph>
</subSubSection>
</treatment>
</document>