treatments-xml/data/C8/04/8C/C8048C67E7C37C620416C34EB8EE495E.xml

<document ID-DOI="http://dx.doi.org/10.3897/zookeys.175.2413" ID-GBIF-Dataset="46454252-ad49-4e36-8505-8adc729823ad" ID-PMC="PMC3307344" ID-Pensoft-Pub="1313-2970-175-1" ID-PubMed="22451787" ModsDocAuthor="" ModsDocDate="2012" ModsDocID="1313-2970-175-1" ModsDocOrigin="ZooKeys 175" ModsDocTitle="Three new species of Potamothrix (Oligochaeta, Naididae, Tubificinae) from Fuxian Lake, the deepest lake of Yunnan Province, Southwest China" checkinTime="1451249296165" checkinUser="pensoft" docAuthor="Cui, Yongde &amp; Wang, Hongzhu" docDate="2012" docId="C8048C67E7C37C620416C34EB8EE495E" docLanguage="en" docName="ZooKeys 175: 1-17" docOrigin="ZooKeys 175" docSource="http://dx.doi.org/10.3897/zookeys.175.2413" docTitle="Potamothrix praeprostatus Cui &amp; Wang, 2012, sp. n." docType="treatment" docVersion="4" lastPageNumber="4" masterDocId="FFA6FFA9FFB627378905577DD05BFFAD" masterDocTitle="Three new species of Potamothrix (Oligochaeta, Naididae, Tubificinae) from Fuxian Lake, the deepest lake of Yunnan Province, Southwest China" masterLastPageNumber="17" masterPageNumber="1" pageNumber="3" updateTime="1668153360783" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Three new species of Potamothrix (Oligochaeta, Naididae, Tubificinae) from Fuxian Lake, the deepest lake of Yunnan Province, Southwest China</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Cui, Yongde</mods:namePart>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wang, Hongzhu</mods:namePart>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2012</mods:date>
<mods:detail type="volume">
<mods:number>175</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>17</mods:end>
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<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.175.2413</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.175.2413</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-175-1</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="152033547" LSID="urn:lsid:zoobank.org:act:A45887B2-F06C-4F6C-B66E-A6F65DACD01B" httpUri="http://treatment.plazi.org/id/C8048C67E7C37C620416C34EB8EE495E" lastPageId="3" lastPageNumber="4" pageId="2" pageNumber="3">
<subSubSection pageId="2" pageNumber="3" type="nomenclature">
<paragraph pageId="2" pageNumber="3">
<taxonomicName LSID="urn:lsid:zoobank.org:act:A45887B2-F06C-4F6C-B66E-A6F65DACD01B" class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix praeprostatus" order="Haplotaxida" pageId="2" pageNumber="3" phylum="Annelida" rank="species" species="praeprostatus">Potamothrix praeprostatus</taxonomicName>
<taxonomicNameLabel pageId="2" pageNumber="3">sp. n.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="3" type="holotype">
<paragraph pageId="2" pageNumber="3">Holotype.</paragraph>
<paragraph pageId="2" pageNumber="3">IHB YAN 20021205b, mature specimen mounted in Canada balsam, and stained with borax carmine.</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="3" type="type locality">
<paragraph pageId="2" pageNumber="3">Type locality.</paragraph>
<paragraph pageId="2" pageNumber="3">
East of Lichang (
<geoCoordinate direction="north" orientation="latitude" precision="15" value="24.534445">24°32'04&quot;N</geoCoordinate>
, 
<geoCoordinate direction="east" orientation="longitude" precision="15" value="102.861946">102°51'43&quot;E</geoCoordinate>
) in Fuxian Lake, eastern Yunnan, China; depth 113 m, bottom temperature 13.5°C, dissolved oxygen at bottom 5.2 mg/L, total nitrogen in water 0.164 mg/L, total phosphorus in water 0.037 mg/L, fine clay; Dec 11, 2002, coll. Y. Cui and X. Liu.
</paragraph>
</subSubSection>
<subSubSection pageId="2" pageNumber="3" type="etymology">
<paragraph pageId="2" pageNumber="3">Etymology.</paragraph>
<paragraph pageId="2" pageNumber="3">
<normalizedToken originalValue="“prae”">&quot;prae&quot;</normalizedToken>
and 
<normalizedToken originalValue="“prostatus”">&quot;prostatus&quot;</normalizedToken>
are Latin for 
<normalizedToken originalValue="“proximal”">&quot;proximal&quot;</normalizedToken>
and 
<normalizedToken originalValue="“prostate”">&quot;prostate&quot;</normalizedToken>
, respectively. The specific name refers to the prostate glands proximally attached to atria.
</paragraph>
</subSubSection>
<subSubSection lastPageId="3" lastPageNumber="4" pageId="2" pageNumber="3" type="description">
<paragraph pageId="2" pageNumber="3">Description.</paragraph>
<paragraph pageId="2" pageNumber="3">One complete specimen 7.6 mm long, diameter at XI about 0.8 mm, 27 segments. Prostomium conical. Clitellum inconspicuous.</paragraph>
<paragraph lastPageId="3" lastPageNumber="4" pageId="2" pageNumber="3">
Dorsal chaetae (Fig. 1 
<normalizedToken originalValue="C–D">C-D</normalizedToken>
) of 
<normalizedToken originalValue="II–IV">II-IV</normalizedToken>
bifid only, 7-10 per bundle, 135-148 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 3.0-3.5 
<normalizedToken originalValue="µm">µm</normalizedToken>
thick, upper tooth longer and thinner than lower, lower tooth occasionally bifurcated. Dorsal bundles of 
<normalizedToken originalValue="V–X">V-X</normalizedToken>
with 5-8 hair chaetae and 5-7 bifid chaetae; plumose hair chaetae (Fig. 1A), 240-420 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 2.6-3.2 
<normalizedToken originalValue="µm">µm</normalizedToken>
thick basally; pectinate bifid chaetae (Fig. 1B), 120-140 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 2.8-3.2 
<normalizedToken originalValue="µm">µm</normalizedToken>
thick, with 1-2 intermediate teeth, upper tooth slightly longer and thinner than lower tooth (usually bifurcated), or equally long. Dorsal bundles in posterior segments with 1-4 hair chaetae 
<pageBreakToken pageId="3" pageNumber="4" start="start">and</pageBreakToken>
2-6 bifid chaetae, shorter and thinner than those of anterior segments, hair chaetae 280-320 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, bifid chaetae 90-110 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 2.6-2.8 
<normalizedToken originalValue="µm">µm</normalizedToken>
thick. Ventral chaetae (Fig. 1 
<normalizedToken originalValue="D–E">D-E</normalizedToken>
) bifid, 6-8 per bundle anteriorly, 140-150 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 3.0-3.5 
<normalizedToken originalValue="µm">µm</normalizedToken>
thick; 2-4 (5) per bundle in postclitellar segments, 80-110 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 2.4-3.2 
<normalizedToken originalValue="µm">µm</normalizedToken>
thick, all with teeth similar to the ones in dorsal chaetae in II-IV. Spermathecal chaetae (Fig. 1F, H, sc) one per bundle in middle to posterior of X, entally embedded in glandular sacs, about 145-160 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 4.0 
<normalizedToken originalValue="µm">µm</normalizedToken>
thick, with ectal part grooved. Penial chaetae absent. Male pores paired in line with ventral chaetae, anterior to middle of XI. Spermathecal pores paired in line with ventral chaetae, posterior to middle of X, immediately anterior to spermathecal chaetae.
</paragraph>
<paragraph pageId="3" pageNumber="4">
Pharyngeal glands in 
<normalizedToken originalValue="II–III">II-III</normalizedToken>
. Chloragogen cells from VI onwards. No coelomocytes. Male genitalia (Fig. 1G) paired. Vasa deferentia (Fig. 1G, vd) 38-65 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 16-22 
<normalizedToken originalValue="µm">µm</normalizedToken>
wide, entering atria apically. Atria (Fig. 1G, at) 690 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 28-80 
<normalizedToken originalValue="µm">µm</normalizedToken>
wide, tubular and rather homogenous throughout, with thin outer muscular layer and thick inner epithelium. Prostate glands (Fig. 1G, pr) small, proximally attached to atria, and far from vasa deferentia. Soft part of penis (Fig. 1G, pe) small, 38-54 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 22-44 
<normalizedToken originalValue="µm">µm</normalizedToken>
wide, cylindrical, enclosed in penial sacs. Penial sacs (Fig. 1G, ps) 65-80 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 54-80 
<normalizedToken originalValue="µm">µm</normalizedToken>
wide, with muscular layer 3-4 
<normalizedToken originalValue="µm">µm</normalizedToken>
thick.
</paragraph>
<paragraph pageId="3" pageNumber="4">
Spermathecae (Fig. 1H) in 
<normalizedToken originalValue="X–XII">X-XII</normalizedToken>
, ducts (Fig. 1H, sd) 470-490 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 38-65 
<normalizedToken originalValue="µm">µm</normalizedToken>
wide, ampullae (Fig. 1H, sa) elongated, 520-540 
<normalizedToken originalValue="µm">µm</normalizedToken>
long, maximally 300-315 
<normalizedToken originalValue="µm">µm</normalizedToken>
wide. Spermatozeugmata (Fig. 1H, sz) 5-8 in each ampulla, about 300-460 
<normalizedToken originalValue="µm">µm</normalizedToken>
long.
</paragraph>
<caption pageId="3" pageNumber="4">
<paragraph pageId="3" pageNumber="4">
Figure 1. 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix praeprostatus" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="praeprostatus">Potamothrix praeprostatus</taxonomicName>
sp. n., A hair B distal end of dorsal bifid from V C distal end of dorsal bifid from III D distal end of ventral chaeta from V E ventral chaeta from III F spermathecal chaeta G lateral view of male ducts in segments 
<normalizedToken originalValue="X–XI">X-XI</normalizedToken>
H lateral view of spermatheca in segments 
<normalizedToken originalValue="X–XII">X-XII</normalizedToken>
. Scale bars: 
<normalizedToken originalValue="A–F">A-F</normalizedToken>
40 
<normalizedToken originalValue="µm">µm</normalizedToken>
; 
<normalizedToken originalValue="G–H">G-H</normalizedToken>
200 
<normalizedToken originalValue="µm">µm</normalizedToken>
.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="3" pageNumber="4" type="distribution">
<paragraph pageId="3" pageNumber="4">Distribution and habitat.</paragraph>
<paragraph pageId="3" pageNumber="4">Known only from its type locality, Yunnan Province, China; freshwater lake, 113 m depth, water temperature less than 14 °C, fine clay.</paragraph>
</subSubSection>
<subSubSection pageId="3" pageNumber="4" type="remarks">
<paragraph pageId="3" pageNumber="4">Remarks.</paragraph>
<paragraph pageId="3" pageNumber="4">
According to short vasa deferentia, long tubular atria, each with a small prostate gland, and lack of ejaculatory ducts, the new species fits more closely the definition of 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="genus">Potamothrix</taxonomicName>
<normalizedToken originalValue="Vejdovský">Vejdovsky</normalizedToken>
&amp; 
<normalizedToken originalValue="Mrázek">Mrazek</normalizedToken>
, 1902 than that of any other described tubificine genus (
<bibRefCitation pageId="3" pageNumber="4">Brinkhurst and Jamieson 1971</bibRefCitation>
; 
<bibRefCitation author="Finogenova, NP" journalOrPublisher="Zoologische Jahrbuecher Abtleitung fuer Systematik" pageId="10" pageNumber="11" pagination="55 - 83" title="One more revision of the genus Potamothrix Vejdovsky et Mrazek, 1902 (Oligochaeta, Tubificidae)." volume="117" year="1990">Finogenova and Poddubnaja 1990</bibRefCitation>
).
</paragraph>
<paragraph pageId="3" pageNumber="4">
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix praeprostatus" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="praeprostatus">Potamothrix praeprostatus</taxonomicName>
sp. n. differs from its allies by its prostate glands joining atria in their proximal to middle portion. With regard homogenous atria with prostate glands, the new species is similar to 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix postojnae" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="postojnae">Potamothrix postojnae</taxonomicName>
Karaman, 1974, 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix scleropenis" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="scleropenis">Potamothrix scleropenis</taxonomicName>
Cui &amp; Wang, 2005, 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix aductus" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="aductus">Potamothrix aductus</taxonomicName>
Cui &amp; Wang, 2012, and 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix paramoldaviensis" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="paramoldaviensis">Potamothrix paramoldaviensis</taxonomicName>
sp. n. However, these species differ from 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix praeprostatus" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="praeprostatus">Potamothrix praeprostatus</taxonomicName>
sp. n. in that 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix postojnae" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="postojnae">Potamothrix postojnae</taxonomicName>
has no spermathecal chaeta (
<bibRefCitation author="Brinkhurst, RO" journalOrPublisher="Canadian Technical Report of Hydrography and Ocean Sciences" pageId="10" pageNumber="11" pagination="1 - 101" title="Aquatic Oligochaeta of the World: supplement. A catalogue of new freshwater species, description, and revisions." volume="44" year="1984">Brinkhurst and Wetzel 1984</bibRefCitation>
); 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix scleropenis" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="scleropenis">Potamothrix scleropenis</taxonomicName>
has penial sheath (
<bibRefCitation author="Cui, YD" journalOrPublisher="Zoological Science" pageId="10" pageNumber="11" pagination="1353 - 1357" title="Potamothrix scleropenis sp. nov. (Oligochaeta: Tubificidae) from Fuxian Lake, the deepest lake in southwest China." url="10.2108/zsj.22.1353" volume="22" year="2005">Cui and Wang 2005</bibRefCitation>
); 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix paramoldaviensis" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="paramoldaviensis">Potamothrix paramoldaviensis</taxonomicName>
sp. n. has no hairs and no penis (Fig. 2); 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix aductus" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="aductus">Potamothrix aductus</taxonomicName>
Cui &amp; Wang, 2012 has no spermathecal duct and its spermathecal chaeta has contorted ectal part.
</paragraph>
<caption pageId="3" pageNumber="4">
<paragraph pageId="3" pageNumber="4">
Figure 2. 
<taxonomicName class="Clitellata" family="Naididae" genus="Potamothrix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Potamothrix paramoldaviensis" order="Haplotaxida" pageId="3" pageNumber="4" phylum="Annelida" rank="species" species="paramoldaviensis">Potamothrix paramoldaviensis</taxonomicName>
sp. n., A dorsal chaeta from III B ventral chaeta from VII C penial chaeta D spermathecal chaeta E spermatheca F lateral view of male ducts in segments 
<normalizedToken originalValue="X–XI">X-XI</normalizedToken>
. Scale bars: 
<normalizedToken originalValue="A–D">A-D</normalizedToken>
40 
<normalizedToken originalValue="µm">µm</normalizedToken>
; 
<normalizedToken originalValue="E–F">E-F</normalizedToken>
200 
<normalizedToken originalValue="µm">µm</normalizedToken>
</paragraph>
</caption>
</subSubSection>
</treatment>
</document>