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<document id="35AF53C31C4EDCED43AE554E1D8F8031" ID-CLB-Dataset="28383" ID-DOI="10.11646/zootaxa.4565.3.5" ID-GBIF-Dataset="be0cff17-4c49-46d2-b6ee-1b50c8ae1c7f" ID-ISSN="1175-5326" ID-Zenodo-Dep="2590313" ID-ZooBank="003E948F-6747-450F-80AD-027BD629AFE2" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1552305208240" checkinUser="plazi" docAuthor="Dittmann, Isabel L., Dibiasi, Wolfgang, Noreña, Carolina &amp; Egger, Bernhard" docDate="2019" docId="03ED3E04FFF7961BEEFF2D07FE08F839" docLanguage="en" docName="zootaxa.4565.3.5.pdf" docOrigin="Zootaxa 4565 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Pericelis tectivorum Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger 2019, sp. nov." docType="treatment" docVersion="9" lastPageNumber="388" masterDocId="FFD4467CFFF5961EEE682E05FFD8FFE6" masterDocTitle="Description of the snail-eating flatworm in marine aquaria, Pericelis tectivorum sp. nov. (Polycladida, Platyhelminthes)" masterLastPageNumber="397" masterPageNumber="383" pageNumber="385" updateTime="1698701575511" updateUser="ExternalLinkService">
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<mods:title id="A4DC61BC177291540B89553FC2459004">Description of the snail-eating flatworm in marine aquaria, Pericelis tectivorum sp. nov. (Polycladida, Platyhelminthes)</mods:title>
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<mods:namePart id="9F54992E227F4C5E93D4D8DCDB84CEA7">Dittmann, Isabel L.</mods:namePart>
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<mods:namePart id="E98520AAEADB4E9A311E9C4375F171BD">Dibiasi, Wolfgang</mods:namePart>
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<mods:namePart id="7771B759A83B0ED2EF5ADDB4FC090D76">Noreña, Carolina</mods:namePart>
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<mods:namePart id="53E991B675B9A911A3F2A5718AC8B885">Egger, Bernhard</mods:namePart>
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<mods:title id="BD73E52651D27815AF4D2985B7468AAF">Zootaxa</mods:title>
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<treatment id="03ED3E04FFF7961BEEFF2D07FE08F839" ID-DOI="http://doi.org/10.5281/zenodo.5925662" ID-GBIF-Taxon="154367023" ID-Zenodo-Dep="5925662" LSID="urn:lsid:plazi:treatment:03ED3E04FFF7961BEEFF2D07FE08F839" httpUri="http://treatment.plazi.org/id/03ED3E04FFF7961BEEFF2D07FE08F839" lastPageId="5" lastPageNumber="388" pageId="2" pageNumber="385">
<subSubSection id="C35EDC99FFF7961CEEFF2D07FE34FCFA" box="[151,492,770,796]" pageId="2" pageNumber="385" type="nomenclature">
<paragraph id="8BFB8F12FFF7961CEEFF2D07FE34FCFA" blockId="2.[151,492,770,830]" box="[151,492,770,796]" pageId="2" pageNumber="385">
<heading id="D0B3387EFFF7961CEEFF2D07FE34FCFA" bold="true" box="[151,492,770,796]" fontSize="11" level="1" pageId="2" pageNumber="385" reason="1">
<emphasis id="B9305300FFF7961CEEFF2D07FE34FCFA" bold="true" box="[151,492,770,796]" pageId="2" pageNumber="385">
<taxonomicName id="4C44F491FFF7961CEEFF2D07FE5EFCFA" ID-CoL="7ZLLV" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[151,390,770,796]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="2" pageNumber="385" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF7961CEEFF2D07FE5EFCFA" bold="true" box="[151,390,770,796]" italics="true" pageId="2" pageNumber="385">Pericelis tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF7961CEFE62D07FE34FCFA" box="[398,492,770,796]" pageId="2" pageNumber="385" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
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<subSubSection id="C35EDC99FFF7961CEEFF2D20FECAFCD8" box="[151,274,805,830]" pageId="2" pageNumber="385" type="description">
<paragraph id="8BFB8F12FFF7961CEEFF2D20FECAFCD8" blockId="2.[151,492,770,830]" box="[151,274,805,830]" pageId="2" pageNumber="385">
(
<figureCitation id="137F9397FFF7961CEEF72D20FED1FCD8" box="[159,265,805,830]" captionStart-0="FIGURE 1" captionStart-1="FIGURE 2" captionStart-2="FIGURE 3" captionStart-3="FIGURE 4" captionStart-4="FIGURE 5" captionStart-5="FIGURE 6" captionStartId-0="3.[151,250,1872,1894]" captionStartId-1="4.[151,250,1500,1522]" captionStartId-2="5.[151,250,1584,1606]" captionStartId-3="6.[151,250,1429,1451]" captionStartId-4="7.[151,250,1771,1793]" captionStartId-5="8.[151,250,1859,1881]" captionTargetBox-0="[170,1436,375,1852]" captionTargetBox-1="[151,1436,193,1478]" captionTargetBox-2="[151,1436,245,1530]" captionTargetBox-3="[151,1436,193,1407]" captionTargetBox-4="[151,1436,193,1749]" captionTargetBox-5="[151,1435,555,1837]" captionTargetId-0="figure@3.[151,1436,375,1852]" captionTargetId-1="figure@4.[151,1436,193,1478]" captionTargetId-2="figure@5.[151,1436,245,1530]" captionTargetId-3="figure@6.[151,1436,193,1407]" captionTargetId-4="figure@7.[151,1436,193,1749]" captionTargetId-5="figure@8.[151,1435,553,1838]" captionTargetPageId-0="3" captionTargetPageId-1="4" captionTargetPageId-2="5" captionTargetPageId-3="6" captionTargetPageId-4="7" captionTargetPageId-5="8" captionText-0="FIGURE 1. Live images of P. tectivorum sp. nov. A. Dorsal view. B. Detailed view of the tentacles. C. Detailed view of the cerebral and anteriorly extending frontal eyes. D. Dorsal view. E. Detailed view of the sucker. br = brain; ce = cerebral eyes; fe = anteriorly extending frontal eyes; su = sucker; t = tentacle. Orientation: anterior directed upwards." captionText-1="FIGURE 2. Drawing of the eye configuration of P. tectivorum sp. nov. ce = cerebral eyes; fe = frontal eyes; me = marginal eyes; te = tentacle eyes. Orientation: anterior to the left." captionText-2="FIGURE 3. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (holotype). A. Female genitals and sucker. B. Penis papilla and female genitals. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; sbe = spermiducal bulb entrance; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." captionText-3="FIGURE 4. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (paratype). A. Penis papilla and female genitals. B. Female genitals and sucker. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." captionText-4="FIGURE 5. Sagittal serial sections of the male genital of P. tectivorum sp. nov. (holotype). AD. First spermiducal bulbs with entrance. E. Junction between spermiducal bulbs to seminal vesicle. FJ. Seminal vesicle. KN. Penis papilla. OR. Male atrium. SW. Second spermiducal bulbs with entrance. ed = ejaculatory duct; ma = male atrium; mg = male gonopore; pp = penis papilla; sb = spermiducal bulbs; sbm = sperm bulb muscles; sbe = spermiducal bulbs entrance; sv = seminal vesicle. Orientation: anterior to the left. Scale A-V 200 µm, W 50 µm." captionText-5="FIGURE 6. Comparison of the genitals of P. tectivorum sp. nov. and P. byerleyana. A. Reconstruction of the genital of P. tectivorum sp. nov. B. Reconstruction of the genital of P. byerleyana after Meixner 1907. cg = cement glands; cp = cement pouch ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; sb = spermiducal bulbs; sbe = spermiducal bulbs entrance; su = sucker; sv = seminal vesicle; uv = uterine vesicle; ute = uterine entrance; v = vagina; vd = vasa deferentia; vde = vasa deferentia entrance. Orientation: anterior to the left." httpUri-0="https://zenodo.org/record/2590315/files/figure.png" httpUri-1="https://zenodo.org/record/2590317/files/figure.png" httpUri-2="https://zenodo.org/record/2590319/files/figure.png" httpUri-3="https://zenodo.org/record/2590321/files/figure.png" httpUri-4="https://zenodo.org/record/2590323/files/figure.png" httpUri-5="https://zenodo.org/record/2590325/files/figure.png" pageId="2" pageNumber="385">Figs. 16</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="C35EDC99FFF7961CEEFF2D6FFBCCFAB0" pageId="2" pageNumber="385" type="materials_examined">
<paragraph id="8BFB8F12FFF7961CEEFF2D6FFB56FC65" blockId="2.[151,1437,874,2015]" box="[151,1166,874,899]" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEFF2D6FFE58FC65" bold="true" box="[151,384,874,899]" pageId="2" pageNumber="385">Material examined.</emphasis>
<taxonomicName id="4C44F491FFF7961CEFEF2D6FFDB2FC65" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[391,618,874,899]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="2" pageNumber="385" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF7961CEFEF2D6FFDB2FC65" box="[391,618,874,899]" italics="true" pageId="2" pageNumber="385">Pericelis tectivorum</emphasis>
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<taxonomicNameLabel id="A203EE7BFFF7961CEC182D6FFD12FC65" box="[624,714,874,899]" pageId="2" pageNumber="385" rank="species">
<emphasis id="B9305300FFF7961CEC182D6FFD12FC65" bold="true" box="[624,714,874,899]" pageId="2" pageNumber="385">sp. nov.</emphasis>
</taxonomicNameLabel>
specimens #5; #10, sagittally sectioned.
</paragraph>
<paragraph id="8BFB8F12FFF7961CEEAF2D8BFCEAFC09" blockId="2.[151,1437,874,2015]" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEAF2D8BFEB7FC41" bold="true" box="[199,367,910,935]" pageId="2" pageNumber="385">Type material</emphasis>
. Sagittal serial sections of the
<typeStatus id="54FF31B0FFF7961CECA72D8BFCE9FC41" box="[719,817,910,935]" pageId="2" pageNumber="385" type="holotype">holotype</typeStatus>
(NHMW_EvMicro 5771/1-45) and
<typeStatus id="54FF31B0FFF7961CEAA62D8AFAF6FC41" box="[1230,1326,911,935]" pageId="2" pageNumber="385" type="paratype">paratype</typeStatus>
(NHMW EvMicro 5772/1-250), and marginal tissue sample in 100% ethanol of the
<typeStatus id="54FF31B0FFF7961CEA7E2DB6FBAEFC2D" box="[1046,1142,947,971]" pageId="2" pageNumber="385" type="paratype">paratype</typeStatus>
(NHMW EvWet 21221) submitted to the Natural History Museum
<collectingRegion id="498041F0FFF7961CEC192DD3FD1BFC09" box="[625,707,982,1007]" country="Austria" name="Wien" pageId="2" pageNumber="385">Vienna</collectingRegion>
,
<collectingCountry id="F353CF82FFF7961CECA72DD3FCFEFC09" box="[719,806,982,1007]" name="Austria" pageId="2" pageNumber="385">Austria</collectingCountry>
).
</paragraph>
<paragraph id="8BFB8F12FFF7961CEEAF2DFFFC16FBF5" blockId="2.[151,1437,874,2015]" box="[199,974,1018,1043]" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEAF2DFFFEE3FBF5" bold="true" box="[199,315,1018,1043]" pageId="2" pageNumber="385">
<typeStatus id="54FF31B0FFF7961CEEAF2DFFFEEEFBF5" box="[199,310,1018,1043]" pageId="2" pageNumber="385" type="holotype">Holotype</typeStatus>
.
</emphasis>
One sagittally sectioned specimen (#5) stained with Azan.
</paragraph>
<paragraph id="8BFB8F12FFF7961CEEAF2A1BFC04FBD1" blockId="2.[151,1437,874,2015]" box="[199,988,1054,1079]" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEAF2A1BFEE3FBD1" bold="true" box="[199,315,1054,1079]" pageId="2" pageNumber="385">
<typeStatus id="54FF31B0FFF7961CEEAF2A1BFEEEFBD1" box="[199,310,1054,1079]" pageId="2" pageNumber="385" type="paratype">Paratype</typeStatus>
.
</emphasis>
One sagittally sectioned specimen (#10) stained with Azan.
</paragraph>
<paragraph id="8BFB8F12FFF7961CEEAF2A47FB4EFBBD" blockId="2.[151,1437,874,2015]" box="[199,1174,1090,1115]" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEAF2A47FEBDFBBD" bold="true" box="[199,357,1090,1115]" pageId="2" pageNumber="385">Type locality.</emphasis>
Commercial seawater aquarium 'Alpenriff' in Innsbruck (
<collectingRegion id="498041F0FFF7961CED832A47FBFFFBBD" box="[1003,1063,1090,1115]" country="Austria" name="Tirol" pageId="2" pageNumber="385">Tirol</collectingRegion>
;
<collectingCountry id="F353CF82FFF7961CEA5B2A47FB53FBBD" box="[1075,1163,1090,1115]" name="Austria" pageId="2" pageNumber="385">Austria</collectingCountry>
).
</paragraph>
<paragraph id="8BFB8F12FFF7961CEEAF2A63FBCCFAB0" blockId="2.[151,1437,874,2015]" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEAF2A63FE2FFB99" bold="true" box="[199,503,1126,1151]" pageId="2" pageNumber="385">Other material observed.</emphasis>
Live observations of four live specimens from Landeck (including specimen #2), seven from Innsbruck (including specimens #5, #7 and #10). Partial 28S sequences of one specimen from Landeck (#2) and three specimens from Innsbruck (#5, #7, #10).
<emphasis id="B9305300FFF7961CED612AABFBD5FB21" bold="true" box="[777,1037,1198,1223]" pageId="2" pageNumber="385">Histological remarks.</emphasis>
One sample, #7, was found to be not fixed well and the tissue appeared broken and disjointed in the sections. Therefore, it was not used for further analyses. The Azan trichrome staining looks markedly different in colour and intensity between
<typeStatus id="54FF31B0FFF7961CEABC2AF3FAEEFAE9" box="[1236,1334,1270,1295]" pageId="2" pageNumber="385" type="holotype">holotype</typeStatus>
(#5) and
<typeStatus id="54FF31B0FFF7961CEEFF2B1EFF2FFAD5" box="[151,247,1307,1331]" pageId="2" pageNumber="385" type="paratype">paratype</typeStatus>
(#10), although the same recipe was used. The thickness of the sections (2530 µm in #5 and 10 µm in #10) and the age of the prepared solutions may have influenced the appearance.
</paragraph>
</subSubSection>
<subSubSection id="C35EDC99FFF7961CEEAF2B67FEF2FA01" pageId="2" pageNumber="385" type="etymology">
<paragraph id="8BFB8F12FFF7961CEEAF2B67FC35FA79" blockId="2.[151,1437,874,2015]" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEAF2B67FE96FA9D" bold="true" box="[199,334,1378,1403]" pageId="2" pageNumber="385">Etymology.</emphasis>
After the observed prey of the species,
<taxonomicName id="4C44F491FFF7961CED762B61FB79FA9D" authority="(Gmelin, 1791)" authorityName="Gmelin" authorityYear="1791" baseAuthorityName="Gmelin" baseAuthorityYear="1791" box="[798,1185,1378,1403]" class="Gastropoda" family="Tegulidae" genus="Tectus" higherTaxonomySource="CoL" kingdom="Animalia" order="Trochida" pageId="2" pageNumber="385" phylum="Mollusca" rank="species" species="fenestratus">
<emphasis id="B9305300FFF7961CED762B61FC31FA9D" box="[798,1001,1379,1403]" italics="true" pageId="2" pageNumber="385">Tectus fenestratus</emphasis>
(
<bibRefCitation id="EFD5F2E3FFF7961CED922B67FB41FA9D" author="Gmelin, J. F." box="[1018,1177,1378,1403]" pageId="2" pageNumber="385" pagination="3021 - 3910" refId="ref6399" refString="Gmelin, J. F. (1791) Vermes. In: Gmelin, J. F. (Ed.), Caroli a Linnaei Systema Naturae per Regna Tria Naturae, Ed. 13. Tome 1 (6). G. E. Beer, Lipsiae [Leipzig]. pp. 3021 - 3910." type="book chapter" year="1791">Gmelin, 1791</bibRefCitation>
)
</taxonomicName>
, a snail of the family
<taxonomicName id="4C44F491FFF7961CEEFF2B83FEDDFA79" authorityName="Kuroda, Habe &amp; Oyama" authorityYear="1971" box="[151,261,1414,1439]" class="Gastropoda" family="Tegulidae" kingdom="Animalia" pageId="2" pageNumber="385" phylum="Mollusca" rank="family">Tegulidae</taxonomicName>
and after the Latin word 'vorare' which means 'devour' in English.
</paragraph>
<paragraph id="8BFB8F12FFF7961CEEAF2BAFFEF2FA01" blockId="2.[151,1437,874,2015]" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEAF2BAFFEE4FA25" bold="true" box="[199,316,1450,1475]" pageId="2" pageNumber="385">Synonym.</emphasis>
In German, this or a related species are referred to as the 'Leopardenstrudelwurm' (the 'leopard turbellarian').
</paragraph>
</subSubSection>
<subSubSection id="C35EDC99FFF7961BEEAF2BF7FE08F839" lastPageId="5" lastPageNumber="388" pageId="2" pageNumber="385" type="description">
<paragraph id="8BFB8F12FFF7961CEEAF2BF7FBACF8A9" blockId="2.[151,1437,874,2015]" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEAF2BF7FE87F9ED" bold="true" box="[199,351,1522,1547]" pageId="2" pageNumber="385">Appearance.</emphasis>
Elongated oval body,
<typeStatus id="54FF31B0FFF7961CEC352BF7FD67F9ED" box="[605,703,1522,1547]" pageId="2" pageNumber="385" type="holotype">holotype</typeStatus>
<quantity id="4CBC22F7FFF7961CECAF2BF6FCD8F9EC" box="[711,768,1523,1546]" metricMagnitude="-2" metricUnit="m" metricValue="7.0" pageId="2" pageNumber="385" unit="cm" value="7.0">7 cm</quantity>
long and
<quantity id="4CBC22F7FFF7961CED1A2BF6FC72F9EC" box="[882,938,1523,1547]" metricMagnitude="-2" metricUnit="m" metricValue="4.0" pageId="2" pageNumber="385" unit="cm" value="4.0">4 cm</quantity>
wide (
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:
<quantity id="4CBC22F7FFF7961CEA032BF7FB7BF9EC" box="[1131,1187,1522,1547]" metricMagnitude="-2" metricUnit="m" metricValue="5.0" pageId="2" pageNumber="385" unit="cm" value="5.0">5 cm</quantity>
long and
<quantity id="4CBC22F7FFF7961CEB7D2BF6FA95F9EC" box="[1301,1357,1523,1547]" metricMagnitude="-2" metricUnit="m" metricValue="3.0" pageId="2" pageNumber="385" unit="cm" value="3.0">3 cm</quantity>
wide). The pharynx length is about 50% of the body length. Two thin marginal tentacles at anterior body edge (
<figureCitation id="137F9397FFF7961CEB742813FA56F9C9" box="[1308,1422,1558,1583]" captionStart="FIGURE 1" captionStartId="3.[151,250,1872,1894]" captionTargetBox="[170,1436,375,1852]" captionTargetId="figure@3.[151,1436,375,1852]" captionTargetPageId="3" captionText="FIGURE 1. Live images of P. tectivorum sp. nov. A. Dorsal view. B. Detailed view of the tentacles. C. Detailed view of the cerebral and anteriorly extending frontal eyes. D. Dorsal view. E. Detailed view of the sucker. br = brain; ce = cerebral eyes; fe = anteriorly extending frontal eyes; su = sucker; t = tentacle. Orientation: anterior directed upwards." httpUri="https://zenodo.org/record/2590315/files/figure.png" pageId="2" pageNumber="385">Fig 1A, B</figureCitation>
). Margin slightly ruffled. Cerebral eyes clusters posterior to a well-marked V-shaped notch between the tentacles, well separated, elongated, oval in form, directly merging to a line of frontal eyes extending in a fan-like shape towards the tentacles. From anterior to posterior, the line of frontal eyes is about the same length as the cerebral eye cluster (
<figureCitation id="137F9397FFF7961CEE9928A3FEEFF959" box="[241,311,1702,1727]" captionStart="FIGURE 2" captionStartId="4.[151,250,1500,1522]" captionTargetBox="[151,1436,193,1478]" captionTargetId="figure@4.[151,1436,193,1478]" captionTargetPageId="4" captionText="FIGURE 2. Drawing of the eye configuration of P. tectivorum sp. nov. ce = cerebral eyes; fe = frontal eyes; me = marginal eyes; te = tentacle eyes. Orientation: anterior to the left." httpUri="https://zenodo.org/record/2590317/files/figure.png" pageId="2" pageNumber="385">Fig. 2</figureCitation>
). Tentacle eyes are especially dense at the tips (
<figureCitation id="137F9397FFF7961CED3A28A3FC6CF959" box="[850,948,1702,1727]" captionStart="FIGURE 1" captionStartId="3.[151,250,1872,1894]" captionTargetBox="[170,1436,375,1852]" captionTargetId="figure@3.[151,1436,375,1852]" captionTargetPageId="3" captionText="FIGURE 1. Live images of P. tectivorum sp. nov. A. Dorsal view. B. Detailed view of the tentacles. C. Detailed view of the cerebral and anteriorly extending frontal eyes. D. Dorsal view. E. Detailed view of the sucker. br = brain; ce = cerebral eyes; fe = anteriorly extending frontal eyes; su = sucker; t = tentacle. Orientation: anterior directed upwards." httpUri="https://zenodo.org/record/2590315/files/figure.png" pageId="2" pageNumber="385">Figs. 1B</figureCitation>
,
<figureCitation id="137F9397FFF7961CEDA928A2FC0AF959" box="[961,978,1703,1727]" captionStart="FIGURE 2" captionStartId="4.[151,250,1500,1522]" captionTargetBox="[151,1436,193,1478]" captionTargetId="figure@4.[151,1436,193,1478]" captionTargetPageId="4" captionText="FIGURE 2. Drawing of the eye configuration of P. tectivorum sp. nov. ce = cerebral eyes; fe = frontal eyes; me = marginal eyes; te = tentacle eyes. Orientation: anterior to the left." httpUri="https://zenodo.org/record/2590317/files/figure.png" pageId="2" pageNumber="385">2</figureCitation>
). Dorsal colouration with white spots on dark brown background, highest density of spots along the margins, darkest in colour along the median line (
<figureCitation id="137F9397FFF7961CEB0728CFFF63F8E1" captionStart="FIGURE 1" captionStartId="3.[151,250,1872,1894]" captionTargetBox="[170,1436,375,1852]" captionTargetId="figure@3.[151,1436,375,1852]" captionTargetPageId="3" captionText="FIGURE 1. Live images of P. tectivorum sp. nov. A. Dorsal view. B. Detailed view of the tentacles. C. Detailed view of the cerebral and anteriorly extending frontal eyes. D. Dorsal view. E. Detailed view of the sucker. br = brain; ce = cerebral eyes; fe = anteriorly extending frontal eyes; su = sucker; t = tentacle. Orientation: anterior directed upwards." httpUri="https://zenodo.org/record/2590315/files/figure.png" pageId="2" pageNumber="385">Fig. 1A</figureCitation>
). Ventral colouration: whitish, nearly bluish grey, dendritic markings in the shade of pearl white (
<figureCitation id="137F9397FFF7961CEB5A28EBFA56F8E1" box="[1330,1422,1774,1799]" captionStart="FIGURE 1" captionStartId="3.[151,250,1872,1894]" captionTargetBox="[170,1436,375,1852]" captionTargetId="figure@3.[151,1436,375,1852]" captionTargetPageId="3" captionText="FIGURE 1. Live images of P. tectivorum sp. nov. A. Dorsal view. B. Detailed view of the tentacles. C. Detailed view of the cerebral and anteriorly extending frontal eyes. D. Dorsal view. E. Detailed view of the sucker. br = brain; ce = cerebral eyes; fe = anteriorly extending frontal eyes; su = sucker; t = tentacle. Orientation: anterior directed upwards." httpUri="https://zenodo.org/record/2590315/files/figure.png" pageId="2" pageNumber="385">Fig. 1D</figureCitation>
). Genital pores in the posterior third.
<collectingRegion id="498041F0FFF7961CEC4C2917FD85F8CD" box="[548,605,1810,1835]" country="Maldives" name="Maale" pageId="2" pageNumber="385">Male</collectingRegion>
and female genital pores very close (ca. 50 µm apart) to each other, but no common gonopore. Sucker lies just posterior to the female gonopore (
<figureCitation id="137F9397FFF7961CEDCF2933FBDEF8A9" box="[935,1030,1846,1871]" captionStart="FIGURE 1" captionStartId="3.[151,250,1872,1894]" captionTargetBox="[170,1436,375,1852]" captionTargetId="figure@3.[151,1436,375,1852]" captionTargetPageId="3" captionText="FIGURE 1. Live images of P. tectivorum sp. nov. A. Dorsal view. B. Detailed view of the tentacles. C. Detailed view of the cerebral and anteriorly extending frontal eyes. D. Dorsal view. E. Detailed view of the sucker. br = brain; ce = cerebral eyes; fe = anteriorly extending frontal eyes; su = sucker; t = tentacle. Orientation: anterior directed upwards." httpUri="https://zenodo.org/record/2590315/files/figure.png" pageId="2" pageNumber="385">Figs. 1E</figureCitation>
,
<figureCitation id="137F9397FFF7961CEA7B2932FBEFF8A9" box="[1043,1079,1847,1871]" captionStart="FIGURE 3" captionStartId="5.[151,250,1584,1606]" captionTargetBox="[151,1436,245,1530]" captionTargetId="figure@5.[151,1436,245,1530]" captionTargetPageId="5" captionText="FIGURE 3. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (holotype). A. Female genitals and sucker. B. Penis papilla and female genitals. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; sbe = spermiducal bulb entrance; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." httpUri="https://zenodo.org/record/2590319/files/figure.png" pageId="2" pageNumber="385">3A</figureCitation>
,
<figureCitation id="137F9397FFF7961CEA2B2932FBBFF8A9" box="[1091,1127,1847,1871]" captionStart="FIGURE 4" captionStartId="6.[151,250,1429,1451]" captionTargetBox="[151,1436,193,1407]" captionTargetId="figure@6.[151,1436,193,1407]" captionTargetPageId="6" captionText="FIGURE 4. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (paratype). A. Penis papilla and female genitals. B. Female genitals and sucker. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." httpUri="https://zenodo.org/record/2590321/files/figure.png" pageId="2" pageNumber="385">4B</figureCitation>
).
</paragraph>
<paragraph id="8BFB8F12FFF7961DEEAF295FFB5CFEA6" blockId="2.[151,1437,874,2015]" lastBlockId="3.[151,1436,151,320]" lastPageId="3" lastPageNumber="386" pageId="2" pageNumber="385">
<emphasis id="B9305300FFF7961CEEAF295FFE18F895" bold="true" box="[199,448,1882,1907]" pageId="2" pageNumber="385">Reproductive system</emphasis>
. In both, the
<typeStatus id="54FF31B0FFF7961CEC3E295FFD60F895" box="[598,696,1882,1907]" pageId="2" pageNumber="385" type="holotype">holotype</typeStatus>
and the
<typeStatus id="54FF31B0FFF7961CED71295EFCA4F895" box="[793,892,1883,1907]" pageId="2" pageNumber="385" type="paratype">paratype</typeStatus>
, the male and female copulatory organs are well developed (
<figureCitation id="137F9397FFF7961CEF73297BFEB8F871" box="[283,352,1918,1943]" captionStart="FIGURE 3" captionStartId="5.[151,250,1584,1606]" captionTargetBox="[151,1436,245,1530]" captionTargetId="figure@5.[151,1436,245,1530]" captionTargetPageId="5" captionText="FIGURE 3. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (holotype). A. Female genitals and sucker. B. Penis papilla and female genitals. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; sbe = spermiducal bulb entrance; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." httpUri="https://zenodo.org/record/2590319/files/figure.png" pageId="2" pageNumber="385">Fig. 3</figureCitation>
).
<collectingRegion id="498041F0FFF7961CEF1F297BFE69F871" box="[375,433,1918,1943]" country="Maldives" name="Maale" pageId="2" pageNumber="385">Male</collectingRegion>
copulatory complex shows a spherical seminal vesicle (
<figureCitation id="137F9397FFF7961CEA59297BFBACF871" box="[1073,1140,1918,1943]" captionStart="FIGURE 5" captionStartId="7.[151,250,1771,1793]" captionTargetBox="[151,1436,193,1749]" captionTargetId="figure@7.[151,1436,193,1749]" captionTargetPageId="7" captionText="FIGURE 5. Sagittal serial sections of the male genital of P. tectivorum sp. nov. (holotype). AD. First spermiducal bulbs with entrance. E. Junction between spermiducal bulbs to seminal vesicle. FJ. Seminal vesicle. KN. Penis papilla. OR. Male atrium. SW. Second spermiducal bulbs with entrance. ed = ejaculatory duct; ma = male atrium; mg = male gonopore; pp = penis papilla; sb = spermiducal bulbs; sbm = sperm bulb muscles; sbe = spermiducal bulbs entrance; sv = seminal vesicle. Orientation: anterior to the left. Scale A-V 200 µm, W 50 µm." httpUri="https://zenodo.org/record/2590323/files/figure.png" pageId="2" pageNumber="385">Fig. 5</figureCitation>
EK); two paired, heavily muscularised spermiducal bulbs (
<figureCitation id="137F9397FFF7961CEC7429A7FDBAF85D" box="[540,610,1954,1979]" captionStart="FIGURE 5" captionStartId="7.[151,250,1771,1793]" captionTargetBox="[151,1436,193,1749]" captionTargetId="figure@7.[151,1436,193,1749]" captionTargetPageId="7" captionText="FIGURE 5. Sagittal serial sections of the male genital of P. tectivorum sp. nov. (holotype). AD. First spermiducal bulbs with entrance. E. Junction between spermiducal bulbs to seminal vesicle. FJ. Seminal vesicle. KN. Penis papilla. OR. Male atrium. SW. Second spermiducal bulbs with entrance. ed = ejaculatory duct; ma = male atrium; mg = male gonopore; pp = penis papilla; sb = spermiducal bulbs; sbm = sperm bulb muscles; sbe = spermiducal bulbs entrance; sv = seminal vesicle. Orientation: anterior to the left. Scale A-V 200 µm, W 50 µm." httpUri="https://zenodo.org/record/2590323/files/figure.png" pageId="2" pageNumber="385">Fig. 5</figureCitation>
AB, TW), laterally orientated. Without prostatic vesicle or prostatic glands; ejaculatory duct narrow and long. Penis papilla cylindrical (
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long), U-shaped (
<typeStatus id="54FF31B0FFF7961CEA9A29C3FA80F839" box="[1266,1368,1990,2015]" pageId="2" pageNumber="385" type="holotype">holotype</typeStatus>
,
<figureCitation id="137F9397FFF7961DEB0D29C3FF7BFF56" captionStart="FIGURE 5" captionStartId="7.[151,250,1771,1793]" captionTargetBox="[151,1436,193,1749]" captionTargetId="figure@7.[151,1436,193,1749]" captionTargetPageId="7" captionText="FIGURE 5. Sagittal serial sections of the male genital of P. tectivorum sp. nov. (holotype). AD. First spermiducal bulbs with entrance. E. Junction between spermiducal bulbs to seminal vesicle. FJ. Seminal vesicle. KN. Penis papilla. OR. Male atrium. SW. Second spermiducal bulbs with entrance. ed = ejaculatory duct; ma = male atrium; mg = male gonopore; pp = penis papilla; sb = spermiducal bulbs; sbm = sperm bulb muscles; sbe = spermiducal bulbs entrance; sv = seminal vesicle. Orientation: anterior to the left. Scale A-V 200 µm, W 50 µm." httpUri="https://zenodo.org/record/2590323/files/figure.png" lastPageId="3" lastPageNumber="386" pageId="2" pageNumber="385">Figs. 5</figureCitation>
GP, 6A) or pointing ventro-posteriorly (
<typeStatus id="54FF31B0FFF6961DEC182E9DFD0DFF56" box="[624,725,152,176]" pageId="3" pageNumber="386" type="paratype">paratype</typeStatus>
,
<figureCitation id="137F9397FFF6961DEC882E92FC81FF56" box="[736,857,151,176]" captionStart="FIGURE 4" captionStartId="6.[151,250,1429,1451]" captionTargetBox="[151,1436,193,1407]" captionTargetId="figure@6.[151,1436,193,1407]" captionTargetPageId="6" captionText="FIGURE 4. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (paratype). A. Penis papilla and female genitals. B. Female genitals and sucker. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." httpUri="https://zenodo.org/record/2590321/files/figure.png" pageId="3" pageNumber="386">Fig. 4A, C</figureCitation>
). Tapered in the last distal section. The whole penis papilla projects into the male atrium.Female genital complex with about six uterine vesicles per side, starting posteriorly at the level of the sucker and proceeding anteriorly (
<figureCitation id="137F9397FFF6961DED0E2EDAFC12FF1E" box="[870,970,223,248]" captionStart="FIGURE 3" captionStartId="5.[151,250,1584,1606]" captionTargetBox="[151,1436,245,1530]" captionTargetId="figure@5.[151,1436,245,1530]" captionTargetPageId="5" captionText="FIGURE 3. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (holotype). A. Female genitals and sucker. B. Penis papilla and female genitals. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; sbe = spermiducal bulb entrance; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." httpUri="https://zenodo.org/record/2590319/files/figure.png" pageId="3" pageNumber="386">Figs. 3A</figureCitation>
,
<figureCitation id="137F9397FFF6961DEDBE2EE5FC22FF1E" box="[982,1018,224,248]" captionStart="FIGURE 4" captionStartId="6.[151,250,1429,1451]" captionTargetBox="[151,1436,193,1407]" captionTargetId="figure@6.[151,1436,193,1407]" captionTargetPageId="6" captionText="FIGURE 4. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (paratype). A. Penis papilla and female genitals. B. Female genitals and sucker. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." httpUri="https://zenodo.org/record/2590321/files/figure.png" pageId="3" pageNumber="386">4B</figureCitation>
). Female atrium or vagina externa of
<taxonomicName id="4C44F491FFF6961DEEFF2F00FEF3FEFA" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[151,299,261,284]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="3" pageNumber="386" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF6961DEEFF2F00FEF3FEFA" box="[151,299,261,284]" italics="true" pageId="3" pageNumber="386">P. tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF6961DEF592F01FE53FEFB" box="[305,395,260,285]" pageId="3" pageNumber="386" rank="species">
<emphasis id="B9305300FFF6961DEF592F01FE53FEFB" bold="true" box="[305,395,260,285]" pageId="3" pageNumber="386">sp. nov.</emphasis>
</taxonomicNameLabel>
runs upwards from the female gonopore and expands at the level of the cement pouch (
<figureCitation id="137F9397FFF6961DEB0C2F01FF62FEA6" captionStart="FIGURE 3" captionStartId="5.[151,250,1584,1606]" captionTargetBox="[151,1436,245,1530]" captionTargetId="figure@5.[151,1436,245,1530]" captionTargetPageId="5" captionText="FIGURE 3. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (holotype). A. Female genitals and sucker. B. Penis papilla and female genitals. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; sbe = spermiducal bulb entrance; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." httpUri="https://zenodo.org/record/2590319/files/figure.png" pageId="3" pageNumber="386">Figs. 3B</figureCitation>
,
<figureCitation id="137F9397FFF6961DEEAD2F2DFF34FEA6" box="[197,236,296,320]" captionStart="FIGURE 4" captionStartId="6.[151,250,1429,1451]" captionTargetBox="[151,1436,193,1407]" captionTargetId="figure@6.[151,1436,193,1407]" captionTargetPageId="6" captionText="FIGURE 4. Sagittal sections of male and female genitals, as well as of the sucker of P. tectivorum sp. nov. (paratype). A. Penis papilla and female genitals. B. Female genitals and sucker. C. Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm." httpUri="https://zenodo.org/record/2590321/files/figure.png" pageId="3" pageNumber="386">4A</figureCitation>
). Vagina interna narrows afterwards, turns downwards and opens into the oviduct.
</paragraph>
<caption id="DF3BDF9AFFF6961DEEFF2955FB53F845" httpUri="https://zenodo.org/record/2590315/files/figure.png" pageId="3" pageNumber="386" startId="3.[151,250,1872,1894]" targetBox="[170,1436,375,1852]" targetPageId="3">
<paragraph id="8BFB8F12FFF6961DEEFF2955FB53F845" blockId="3.[151,1436,1872,1955]" pageId="3" pageNumber="386">
<emphasis id="B9305300FFF6961DEEFF2955FECCF883" bold="true" box="[151,276,1872,1894]" pageId="3" pageNumber="386">FIGURE 1.</emphasis>
Live images of
<taxonomicName id="4C44F491FFF6961DEFD42954FD9AF880" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[444,578,1873,1894]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="3" pageNumber="386" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF6961DEFD42954FD9AF880" box="[444,578,1873,1894]" italics="true" pageId="3" pageNumber="386">P. tectivorum</emphasis>
</taxonomicName>
<emphasis id="B9305300FFF6961DEC222955FD65F883" bold="true" box="[586,701,1872,1894]" pageId="3" pageNumber="386">
<taxonomicNameLabel id="A203EE7BFFF6961DEC222955FD44F880" box="[586,668,1872,1894]" pageId="3" pageNumber="386" rank="species">sp. nov.</taxonomicNameLabel>
A.
</emphasis>
Dorsal view.
<emphasis id="B9305300FFF6961DED242955FCBBF883" bold="true" box="[844,867,1872,1893]" pageId="3" pageNumber="386">B.</emphasis>
Detailed view of the tentacles.
<emphasis id="B9305300FFF6961DEAC32955FB1BF880" bold="true" box="[1195,1219,1872,1894]" pageId="3" pageNumber="386">C.</emphasis>
Detailed view of the cerebral and anteriorly extending frontal eyes.
<emphasis id="B9305300FFF6961DEC18296AFD50F862" bold="true" box="[624,648,1903,1924]" pageId="3" pageNumber="386">D.</emphasis>
Dorsal view.
<emphasis id="B9305300FFF6961DED7C296AFCF4F862" bold="true" box="[788,812,1903,1924]" pageId="3" pageNumber="386">E.</emphasis>
Detailed view of the sucker. br = brain; ce = cerebral eyes; fe = anteriorly extending frontal eyes; su = sucker; t = tentacle. Orientation: anterior directed upwards.
</paragraph>
</caption>
<caption id="DF3BDF9AFFF1961AEEFF2BD9FD13F9F6" httpUri="https://zenodo.org/record/2590317/files/figure.png" pageId="4" pageNumber="387" startId="4.[151,250,1500,1522]" targetBox="[151,1436,193,1478]" targetPageId="4">
<paragraph id="8BFB8F12FFF1961AEEFF2BD9FD13F9F6" blockId="4.[151,1436,1500,1552]" pageId="4" pageNumber="387">
<emphasis id="B9305300FFF1961AEEFF2BD9FECCFA17" bold="true" box="[151,276,1500,1522]" pageId="4" pageNumber="387">FIGURE 2.</emphasis>
Drawing of the eye configuration of
<taxonomicName id="4C44F491FFF1961AECF12BD8FCC7FA14" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[665,799,1501,1522]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF1961AECF12BD8FCC7FA14" box="[665,799,1501,1522]" italics="true" pageId="4" pageNumber="387">P. tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF1961AED4F2BD9FCA2FA17" box="[807,890,1500,1521]" pageId="4" pageNumber="387" rank="species">
<emphasis id="B9305300FFF1961AED4F2BD9FCA2FA17" bold="true" box="[807,890,1500,1521]" pageId="4" pageNumber="387">sp. nov.</emphasis>
</taxonomicNameLabel>
ce = cerebral eyes; fe = frontal eyes; me = marginal eyes; te = tentacle eyes. Orientation: anterior to the left.
</paragraph>
</caption>
<paragraph id="8BFB8F12FFF1961AEEAF2832FD43F8AD" blockId="4.[151,1437,1591,2012]" pageId="4" pageNumber="387">
<emphasis id="B9305300FFF1961AEEAF2832FE20F9B6" bold="true" box="[199,504,1591,1616]" pageId="4" pageNumber="387">Lab cultures and feeding.</emphasis>
<taxonomicName id="4C44F491FFF1961AEF972832FD3AF9B6" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[511,738,1591,1616]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF1961AEF972832FD3AF9B6" box="[511,738,1591,1616]" italics="true" pageId="4" pageNumber="387">Pericelis tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF1961AEC812832FC9BF9B6" box="[745,835,1591,1616]" pageId="4" pageNumber="387" rank="species">
<emphasis id="B9305300FFF1961AEC812832FC9BF9B6" bold="true" box="[745,835,1591,1616]" pageId="4" pageNumber="387">sp. nov.</emphasis>
</taxonomicNameLabel>
was observed to prey on
<taxonomicName id="4C44F491FFF1961AEA0B283CFAF3F9B6" baseAuthorityName="Gmelin" baseAuthorityYear="1791" box="[1123,1323,1592,1616]" class="Gastropoda" family="Tegulidae" genus="Tectus" higherTaxonomySource="CoL" kingdom="Animalia" order="Trochida" pageId="4" pageNumber="387" phylum="Mollusca" rank="species" species="fenestratus">
<emphasis id="B9305300FFF1961AEA0B283CFAF3F9B6" box="[1123,1323,1592,1616]" italics="true" pageId="4" pageNumber="387">Tectus fenestratus</emphasis>
</taxonomicName>
mainly at night. During daytime, worms were hidden under stones or other objects in the commercial aquarium (pers. com. Christian Hepperger). In lab cultures, the worms were observed to slide over the snail shell and stay in this position for several minutes. In some cases, the snail started strongly to turn back and forth. However, we were not able to recognise if this was active movement of the snail or if it was moved by
<taxonomicName id="4C44F491FFF1961AED8D28CCFBA3F906" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[997,1147,1737,1760]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF1961AED8D28CCFBA3F906" box="[997,1147,1737,1760]" italics="true" pageId="4" pageNumber="387">P. tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF1961AEAEC28C2FB38F906" box="[1156,1248,1735,1760]" pageId="4" pageNumber="387" rank="species">
<emphasis id="B9305300FFF1961AEAEC28C2FB38F906" bold="true" box="[1156,1248,1735,1760]" pageId="4" pageNumber="387">sp. nov.</emphasis>
</taxonomicNameLabel>
The feeding act could not be observed, but devoured snails were recognised by the presence of empty snail shells and associated opercula. Both the snail shell and the operculum were intact and not damaged by the worm. Dark food particles were clearly noticeable in the gut of
<taxonomicName id="4C44F491FFF1961AEC582936FD4CF8AA" authorityName="Laidlaw" authorityYear="1902" box="[560,660,1843,1868]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="genus">
<emphasis id="B9305300FFF1961AEC582936FD4CF8AA" box="[560,660,1843,1868]" italics="true" pageId="4" pageNumber="387">Pericelis</emphasis>
</taxonomicName>
.
</paragraph>
<paragraph id="8BFB8F12FFF1961AEEAF2952FD48F83A" blockId="4.[151,1437,1591,2012]" pageId="4" pageNumber="387">
<emphasis id="B9305300FFF1961AEEAF2952FC78F896" bold="true" box="[199,928,1879,1904]" pageId="4" pageNumber="387">Molecular analyses based on partial 28S rDNA sequences.</emphasis>
In our phylogenetic reconstruction of four different species of the genus
<taxonomicName id="4C44F491FFF1961AEC68297EFDBCF872" authorityName="Laidlaw" authorityYear="1902" box="[512,612,1915,1940]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="genus">
<emphasis id="B9305300FFF1961AEC68297EFDBCF872" box="[512,612,1915,1940]" italics="true" pageId="4" pageNumber="387">Pericelis</emphasis>
</taxonomicName>
(
<figureCitation id="137F9397FFF1961AEC11297EFD1AF872" box="[633,706,1915,1940]" captionStart="FIGURE 7" captionStartId="10.[151,250,1546,1568]" captionTargetBox="[163,1424,551,1489]" captionTargetId="figure@10.[151,1436,539,1501]" captionTargetPageId="10" captionText="FIGURE 7. Pericelis genus-level partial 28S rDNA phylogeny using Bayesian inference, rooted with Theama sp. Accession numbers shown after species names." httpUri="https://zenodo.org/record/2590327/files/figure.png" pageId="4" pageNumber="387">Fig. 7</figureCitation>
), the specimens of
<taxonomicName id="4C44F491FFF1961AEDD82978FB91F872" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[944,1097,1917,1940]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF1961AEDD82978FB91F872" box="[944,1097,1917,1940]" italics="true" pageId="4" pageNumber="387">P. tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF1961AEA3D297EFB6DF872" box="[1109,1205,1915,1940]" pageId="4" pageNumber="387" rank="species">
<emphasis id="B9305300FFF1961AEA3D297EFB6DF872" bold="true" box="[1109,1205,1915,1940]" pageId="4" pageNumber="387">sp. nov.</emphasis>
</taxonomicNameLabel>
are recovered with maximal support as sister group of
<taxonomicName id="4C44F491FFF1961AEC4029A4FD18F85E" baseAuthorityName="Collingwood" baseAuthorityYear="1876" box="[552,704,1951,1976]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="species" species="byerleyana">
<emphasis id="B9305300FFF1961AEC4029A4FD18F85E" box="[552,704,1951,1976]" italics="true" pageId="4" pageNumber="387">P. byerleyana</emphasis>
</taxonomicName>
, and these two are sister group of
<taxonomicName id="4C44F491FFF1961AEA2129A4FB07F85E" baseAuthorityName="Schmarda" baseAuthorityYear="1859" box="[1097,1247,1951,1976]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="species" species="orbicularis">
<emphasis id="B9305300FFF1961AEA2129A4FB07F85E" box="[1097,1247,1951,1976]" italics="true" pageId="4" pageNumber="387">P. orbicularis</emphasis>
</taxonomicName>
.
<taxonomicName id="4C44F491FFF1961AEA9929A4FAE3F85E" authorityName="Marcus &amp; Marcus" authorityYear="1968" box="[1265,1339,1953,1976]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="species" species="cata">
<emphasis id="B9305300FFF1961AEA9929A4FAE3F85E" box="[1265,1339,1953,1976]" italics="true" pageId="4" pageNumber="387">P. cata</emphasis>
</taxonomicName>
is sister group of all other available
<taxonomicName id="4C44F491FFF1961AEFA529C6FDE9F83A" authorityName="Laidlaw" authorityYear="1902" box="[461,561,1987,2012]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="4" pageNumber="387" phylum="Platyhelminthes" rank="genus">
<emphasis id="B9305300FFF1961AEFA529C6FDE9F83A" box="[461,561,1987,2012]" italics="true" pageId="4" pageNumber="387">Pericelis</emphasis>
</taxonomicName>
species.
</paragraph>
<caption id="DF3BDF9AFFF0961BEEFF2835FEF2F927" httpUri="https://zenodo.org/record/2590319/files/figure.png" pageId="5" pageNumber="388" startId="5.[151,250,1584,1606]" targetBox="[151,1436,245,1530]" targetPageId="5">
<paragraph id="8BFB8F12FFF0961BEEFF2835FEF2F927" blockId="5.[151,1437,1584,1729]" pageId="5" pageNumber="388">
<emphasis id="B9305300FFF0961BEEFF2835FECDF9A3" bold="true" box="[151,277,1584,1606]" pageId="5" pageNumber="388">FIGURE 3.</emphasis>
Sagittal sections of male and female genitals, as well as of the sucker of
<taxonomicName id="4C44F491FFF0961BEA762837FB7DF9A0" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[1054,1189,1585,1607]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="5" pageNumber="388" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF0961BEA762837FB7DF9A0" box="[1054,1189,1585,1607]" italics="true" pageId="5" pageNumber="388">P. tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF0961BEAC62834FAD9F9A0" box="[1198,1281,1585,1606]" pageId="5" pageNumber="388" rank="species">
<emphasis id="B9305300FFF0961BEAC62834FAD9F9A0" bold="true" box="[1198,1281,1585,1606]" pageId="5" pageNumber="388">sp. nov.</emphasis>
</taxonomicNameLabel>
(holotype).
<emphasis id="B9305300FFF0961BEBEB2835FA44F9A3" bold="true" box="[1411,1436,1584,1605]" pageId="5" pageNumber="388">A.</emphasis>
Female genitals and sucker.
<emphasis id="B9305300FFF0961BEFD1284AFE09F982" bold="true" box="[441,465,1615,1636]" pageId="5" pageNumber="388">B.</emphasis>
Penis papilla and female genitals.
<emphasis id="B9305300FFF0961BED5F284AFC88F983" bold="true" box="[823,848,1615,1637]" pageId="5" pageNumber="388">C.</emphasis>
Spherical seminal vesicle and penis papilla. cg = cement glands; cp = cement pouch, ed = ejaculatory duct; fa = female atrium; ma = male atrium; p = pharynx; pp = penis papilla; sbe = spermiducal bulb entrance; su = sucker; sv = seminal vesicle; uv = uterine vesicle; v = vagina. Orientation: anterior to the left. Scale 200 µm.
</paragraph>
</caption>
<paragraph id="8BFB8F12FFF0961BEEAF28EAFC77F895" blockId="5.[151,1437,1774,2015]" pageId="5" pageNumber="388">
Sequence identity was found to be 100% between all sequences of
<taxonomicName id="4C44F491FFF0961BEDD928EBFB4CF8E0" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[945,1172,1774,1799]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="5" pageNumber="388" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF0961BEDD928EBFB4CF8E0" box="[945,1172,1774,1799]" italics="true" pageId="5" pageNumber="388">Pericelis tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF0961BEAF228EBFB2BF8E1" box="[1178,1267,1774,1799]" pageId="5" pageNumber="388" rank="species">
<emphasis id="B9305300FFF0961BEAF228EBFB2BF8E1" bold="true" box="[1178,1267,1774,1799]" pageId="5" pageNumber="388">sp. nov.</emphasis>
</taxonomicNameLabel>
(one specimen from Landeck, three from Innsbruck) in the 941-nucleotide partial 28S alignment. Between
<taxonomicName id="4C44F491FFF0961BEACE2916FAE2F8CC" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[1190,1338,1811,1834]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="5" pageNumber="388" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF0961BEACE2916FAE2F8CC" box="[1190,1338,1811,1834]" italics="true" pageId="5" pageNumber="388">P. tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF0961BEB2A2917FA44F8CD" box="[1346,1436,1810,1835]" pageId="5" pageNumber="388" rank="species">
<emphasis id="B9305300FFF0961BEB2A2917FA44F8CD" bold="true" box="[1346,1436,1810,1835]" pageId="5" pageNumber="388">sp. nov.</emphasis>
</taxonomicNameLabel>
and
<taxonomicName id="4C44F491FFF0961BEEA62932FEB6F8A9" baseAuthorityName="Collingwood" baseAuthorityYear="1876" box="[206,366,1846,1871]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="5" pageNumber="388" phylum="Platyhelminthes" rank="species" species="byerleyana">
<emphasis id="B9305300FFF0961BEEA62932FEB6F8A9" box="[206,366,1846,1871]" italics="true" pageId="5" pageNumber="388">P. byerleyana</emphasis>
</taxonomicName>
, 99.35% identity (6 nucleotides difference), and between
<taxonomicName id="4C44F491FFF0961BEA5E2932FB09F8A8" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[1078,1233,1847,1870]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="5" pageNumber="388" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF0961BEA5E2932FB09F8A8" box="[1078,1233,1847,1870]" italics="true" pageId="5" pageNumber="388">P. tectivorum</emphasis>
</taxonomicName>
<emphasis id="B9305300FFF0961BEA882933FA99F8A9" bold="true" box="[1248,1345,1846,1871]" pageId="5" pageNumber="388">
<taxonomicNameLabel id="A203EE7BFFF0961BEA882933FA99F8A9" box="[1248,1345,1846,1871]" pageId="5" pageNumber="388" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
and
<taxonomicName id="4C44F491FFF0961BEBEF2932FECBF895" baseAuthorityName="Schmarda" baseAuthorityYear="1859" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="5" pageNumber="388" phylum="Platyhelminthes" rank="species" species="orbicularis">
<emphasis id="B9305300FFF0961BEBEF2932FECBF895" italics="true" pageId="5" pageNumber="388">P. orbicularis</emphasis>
</taxonomicName>
, 98.18% identity (17 nucleotides difference) was observed.
</paragraph>
<paragraph id="8BFB8F12FFF0961BEEAF297AFE08F839" blockId="5.[151,1437,1774,2015]" pageId="5" pageNumber="388">
In a longer alignment with a length of 1362 nucleotides of only
<taxonomicName id="4C44F491FFF0961BEDB8297AFBB1F870" authority="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger, 2019" authorityName="Dittmann &amp; Dibiasi &amp; Noreña &amp; Egger" authorityYear="2019" box="[976,1129,1919,1942]" class="Rhabditophora" family="Pericelidae" genus="Pericelis" kingdom="Animalia" order="Polycladida" pageId="5" pageNumber="388" phylum="Platyhelminthes" rank="species" species="tectivorum" status="sp. nov.">
<emphasis id="B9305300FFF0961BEDB8297AFBB1F870" box="[976,1129,1919,1942]" italics="true" pageId="5" pageNumber="388">P. tectivorum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A203EE7BFFF0961BEA1C297BFB0BF871" box="[1140,1235,1918,1943]" pageId="5" pageNumber="388" rank="species">
<emphasis id="B9305300FFF0961BEA1C297BFB0BF871" bold="true" box="[1140,1235,1918,1943]" pageId="5" pageNumber="388">sp. nov.</emphasis>
</taxonomicNameLabel>
sequences, three sequences from Landeck and Innsbruck were 100% identical (#2, #5, #10), while #7 was in two nucleotide positions (99.85% identity).
</paragraph>
</subSubSection>
</treatment>
</document>