176 lines
14 KiB
XML
176 lines
14 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.401.7075" ID-GBIF-Dataset="bed72a2a-b126-495d-be31-c046b065f57d" ID-PMC="PMC4023267" ID-Pensoft-Pub="1313-2970-401-45" ID-PubMed="24843260" ID-ZBK="03F455BB9AA64D5DA89246C6A6D3F42A" ModsDocAuthor="" ModsDocDate="2014" ModsDocID="1313-2970-401-45" ModsDocOrigin="ZooKeys 401" ModsDocTitle="Revision of the carnivorous snail genus Discartemon Pfeiffer, 1856, with description of twelve new species (Pulmonata, Streptaxidae)" checkinTime="1451245981463" checkinUser="pensoft" docAuthor="Siriboon, Thanit, Sutcharit, Chirasak, Naggs, Fred, Rowson, Ben & Panha, Somsak" docDate="2014" docId="2A35E3C3D2F695D31B5B70B42DD69F5A" docLanguage="en" docName="ZooKeys 401: 45-107" docOrigin="ZooKeys 401" docSource="http://dx.doi.org/10.3897/zookeys.401.7075" docTitle="Discartemon megalostraka Siriboon & Panha, sp. n." docType="treatment" docUuid="05A48225-70FB-406F-857B-0B05C9D07754" docUuidSource="ZooBank" docVersion="4" lastPageNumber="83" masterDocId="FFC1FFB4FFBBFFC5FF9AFFC9FFBFEB04" masterDocTitle="Revision of the carnivorous snail genus Discartemon Pfeiffer, 1856, with description of twelve new species (Pulmonata, Streptaxidae)" masterLastPageNumber="107" masterPageNumber="45" pageNumber="81" updateTime="1668158229784" updateUser="ExternalLinkService">
|
||
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
|
||
<mods:titleInfo>
|
||
<mods:title>Revision of the carnivorous snail genus Discartemon Pfeiffer, 1856, with description of twelve new species (Pulmonata, Streptaxidae)</mods:title>
|
||
</mods:titleInfo>
|
||
<mods:name type="personal">
|
||
<mods:role>
|
||
<mods:roleTerm>Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart>Siriboon, Thanit</mods:namePart>
|
||
</mods:name>
|
||
<mods:name type="personal">
|
||
<mods:role>
|
||
<mods:roleTerm>Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart>Sutcharit, Chirasak</mods:namePart>
|
||
</mods:name>
|
||
<mods:name type="personal">
|
||
<mods:role>
|
||
<mods:roleTerm>Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart>Naggs, Fred</mods:namePart>
|
||
</mods:name>
|
||
<mods:name type="personal">
|
||
<mods:role>
|
||
<mods:roleTerm>Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart>Rowson, Ben</mods:namePart>
|
||
</mods:name>
|
||
<mods:name type="personal">
|
||
<mods:role>
|
||
<mods:roleTerm>Author</mods:roleTerm>
|
||
</mods:role>
|
||
<mods:namePart>Panha, Somsak</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>2014</mods:date>
|
||
<mods:detail type="volume">
|
||
<mods:number>401</mods:number>
|
||
</mods:detail>
|
||
<mods:extent unit="page">
|
||
<mods:start>45</mods:start>
|
||
<mods:end>107</mods:end>
|
||
</mods:extent>
|
||
</mods:part>
|
||
</mods:relatedItem>
|
||
<mods:location>
|
||
<mods:url>http://dx.doi.org/10.3897/zookeys.401.7075</mods:url>
|
||
</mods:location>
|
||
<mods:classification>journal article</mods:classification>
|
||
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.401.7075</mods:identifier>
|
||
<mods:identifier type="Pensoft-Pub">1313-2970-401-45</mods:identifier>
|
||
<mods:identifier type="ZBK">03F455BB9AA64D5DA89246C6A6D3F42A</mods:identifier>
|
||
<mods:identifier type="ZooBank">03F455BB9AA64D5DA89246C6A6D3F42A</mods:identifier>
|
||
</mods:mods>
|
||
<treatment ID-GBIF-Taxon="152052561" LSID="urn:lsid:zoobank.org:act:05A48225-70FB-406F-857B-0B05C9D07754" httpUri="http://treatment.plazi.org/id/2A35E3C3D2F695D31B5B70B42DD69F5A" lastPageId="38" lastPageNumber="83" pageId="36" pageNumber="81">
|
||
<subSubSection pageId="36" pageNumber="81" type="nomenclature">
|
||
<paragraph pageId="36" pageNumber="81">
|
||
25.
|
||
<taxonomicName LSID="http://zoobank.org/05A48225-70FB-406F-857B-0B05C9D07754" authority="Siriboon & Panha" class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon megalostraka" order="Stylommatophora" pageId="36" pageNumber="81" phylum="Mollusca" rank="species" species="megalostraka">Discartemon megalostraka Siriboon & Panha</taxonomicName>
|
||
<taxonomicNameLabel pageId="36" pageNumber="81">sp. n.</taxonomicNameLabel>
|
||
Figs 3E, 10A, B, 16
|
||
<normalizedToken originalValue="A–C">A-C</normalizedToken>
|
||
, 21
|
||
<normalizedToken originalValue="A–F">A-F</normalizedToken>
|
||
, 22G, 23, Table 3
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection lastPageId="37" lastPageNumber="82" pageId="36" pageNumber="81" type="type material">
|
||
<paragraph pageId="36" pageNumber="81">Type material.</paragraph>
|
||
<paragraph lastPageId="37" lastPageNumber="82" pageId="36" pageNumber="81">
|
||
Holotype CUMZ 6253 (Fig. 10A). Measurement: shell height 8.0 mm, shell width 12.0 mm, and with 7 whorls. Paratypes: CUMZ 3657 (5 shells), 6031
|
||
<pageBreakToken pageId="37" pageNumber="82" start="start">(</pageBreakToken>
|
||
9 shells), 6233 (3 specimens in ethanol), NHMUK 20130681 (2 shells), and SMF (2 shells) from the type locality.
|
||
</paragraph>
|
||
<caption pageId="37" pageNumber="82">
|
||
<paragraph pageId="37" pageNumber="82">
|
||
Figure 10. Shells of Group III:
|
||
<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon roebeleni" order="Stylommatophora" pageId="37" pageNumber="82" phylum="Mollusca" rank="species" species="roebeleni">Discartemon roebeleni</taxonomicName>
|
||
-group. A, B
|
||
<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon megalostraka" order="Stylommatophora" pageId="37" pageNumber="82" phylum="Mollusca" rank="species" species="megalostraka">Discartemon megalostraka</taxonomicName>
|
||
sp. n. A holotype CUMZ 6253 with apertural dentition, and B paratype CUMZ 3657 C, D
|
||
<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon triancus" order="Stylommatophora" pageId="37" pageNumber="82" phylum="Mollusca" rank="species" species="triancus">Discartemon triancus</taxonomicName>
|
||
sp. n. C holotype CUMZ 6254 with apertural dentition, and D paratype CUMZ 6032 E, F
|
||
<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon conicus" order="Stylommatophora" pageId="37" pageNumber="82" phylum="Mollusca" rank="species" species="conicus">Discartemon conicus</taxonomicName>
|
||
sp. n. E holotype CUMZ 6255 with apertural dentition, and F paratype CUMZ 6033.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection pageId="37" pageNumber="82" type="type locality">
|
||
<paragraph pageId="37" pageNumber="82">Type locality.</paragraph>
|
||
<paragraph pageId="37" pageNumber="82">
|
||
Nam Tok Tao Thong, Tub Pud, Phangnga, Thailand,
|
||
<geoCoordinate direction="north" orientation="latitude" precision="1" value="8.483556">8°29'0.8"N</geoCoordinate>
|
||
,
|
||
<geoCoordinate direction="east" orientation="longitude" precision="1" value="98.58467">98°35'4.8"E</geoCoordinate>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="37" pageNumber="82" type="other material examined">
|
||
<paragraph pageId="37" pageNumber="82">Other material examined.</paragraph>
|
||
<paragraph pageId="37" pageNumber="82">Wat Tam Seua, Krabi: CUMZ 6029. Ban Chong, Krabi: CUMZ 6030. Wat Sathit Khirirom, Khirirat Nikhom, Suratthani: CUMZ 6234 (1 specimen in ethanol). Tam Wang Badan, Suratthani: CUMZ 6235 (2 specimens in ethanol).</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="37" pageNumber="82" type="diagnosis">
|
||
<paragraph pageId="37" pageNumber="82">Diagnosis.</paragraph>
|
||
<paragraph pageId="37" pageNumber="82">
|
||
This species differs from
|
||
<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon lemyrei" order="Stylommatophora" pageId="37" pageNumber="82" phylum="Mollusca" rank="species" species="lemyrei">Discartemon lemyrei</taxonomicName>
|
||
in its widely open umbilicus and apertural dentition of six lamellae. It differs from
|
||
<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon roebeleni" order="Stylommatophora" pageId="37" pageNumber="82" phylum="Mollusca" rank="species" species="roebeleni">Discartemon roebeleni</taxonomicName>
|
||
in having a much larger shell, higher spire, upper palatal and supracolumellar lamellae, a very long penis, penial sheath and free oviduct, shorter seminal vesicle, and in having atrial pores.
|
||
<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon megalostraka" order="Stylommatophora" pageId="37" pageNumber="82" phylum="Mollusca" rank="species" species="megalostraka">Discartemon megalostraka</taxonomicName>
|
||
sp. n. can be distinguished from
|
||
<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon stenostomus" order="Stylommatophora" pageId="37" pageNumber="82" phylum="Mollusca" rank="species" species="stenostomus">Discartemon stenostomus</taxonomicName>
|
||
in its larger shell, higher spire, transverse ridges, sub-quadrangular aperture, its straight parietal lamella, and in having upper palatal and basal lamellae.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection lastPageId="38" lastPageNumber="83" pageId="37" pageNumber="82" type="description">
|
||
<paragraph pageId="37" pageNumber="82">Description.</paragraph>
|
||
<paragraph pageId="37" pageNumber="82">
|
||
Shell. Shell globose-heliciform, white and translucent; whorls 7
|
||
<normalizedToken originalValue="–7½">-71/2</normalizedToken>
|
||
, spire elevated conical, with a distinct suture. Shell surface glossy with fine transverse ridges that diminish below periphery; varices present. Embryonic shell large, about
|
||
<normalizedToken originalValue="2½">21/2</normalizedToken>
|
||
whorls, with a smooth surface; following whorls regularly coiled. Last whorl rounded and regularly expanded; umbilicus widely open and deep. Aperture sub-quadrangular; peristome discontinuous, thickened, expanded and reflected. Apertural dentition of one strong parietal, one small upper palatal, one palatal, one basal, one columellar and one small supracolumellar lamella (Fig. 10A).
|
||
</paragraph>
|
||
<paragraph pageId="37" pageNumber="82">Radula. Each row consists of 19-21 teeth with formula (9-10)-1-(9-10). The central tooth is small and triangular with a pointed cusp. Lateral and marginal teeth are undifferentiated and large, unicuspid and lanceolate. Latero-marginal teeth gradually reduce in size, with outermost teeth much smaller and shorter than inner teeth (Fig. 22G).</paragraph>
|
||
<paragraph pageId="37" pageNumber="82">Genital organs. Atrium (at) very short. Penis (p) very long and slender. Penial sheath (ps) thin, extending about third-fourths of penis length. Penial sheath retractor muscle (psr) very thin, originating at genital orifice wall and inserting distally on penial sheath (Fig. 16A). Vas deferens (vd) passes a very short distance through penial sheath before entering into penis distally (Fig. 16B). Penial retractor muscle (pr) thin and long, inserting at penis and vas deferens junction.</paragraph>
|
||
<paragraph pageId="37" pageNumber="82">
|
||
Internal wall of atrium with large atrial pores (Fig. 21A). Penial wall with scattered and transparent penial hooks, about 9 hooks/200
|
||
<normalizedToken originalValue="µm">µm</normalizedToken>
|
||
2 (Fig. 21B). Hooks located on penial wall. Penial hooks small (<0.02 mm in length), expanded at base, tips pointed and curved towards genital orifice (Fig. 21
|
||
<normalizedToken originalValue="C–E">C-E</normalizedToken>
|
||
).
|
||
</paragraph>
|
||
<paragraph pageId="37" pageNumber="82">Vagina (v) very short. Gametolytic duct (gd) a long and narrow tube extending as far as albumin gland; gametolytic sac (gs) ovate. Free oviduct (fo) extremely long, proximal part a straight cylindrical tube, distal part corrugated. Oviduct (ov) enlarged and folded; prostate gland inconspicuous. Talon (ta) small, very short and club shaped. Hermaphroditic duct (hd) bearing a long seminal vesicle (sv) about four times as long as the length from talon to branching point of seminal vesicle (Fig. 16C).</paragraph>
|
||
<paragraph pageId="38" pageNumber="83">
|
||
<pageBreakToken pageId="38" pageNumber="83" start="start">Vaginal</pageBreakToken>
|
||
wall with longitudinal vaginal folds (Fig. 21F).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="38" pageNumber="83" type="etymology">
|
||
<paragraph pageId="38" pageNumber="83">Etymology.</paragraph>
|
||
<paragraph pageId="38" pageNumber="83">
|
||
The specific epithet
|
||
<normalizedToken originalValue="“megalostraka”">"megalostraka"</normalizedToken>
|
||
is derived from the Greek
|
||
<normalizedToken originalValue="“megalos”">"megalos"</normalizedToken>
|
||
meaning
|
||
<normalizedToken originalValue="“big”">"big"</normalizedToken>
|
||
and
|
||
<normalizedToken originalValue="“ostrako”">"ostrako"</normalizedToken>
|
||
meaning
|
||
<normalizedToken originalValue="“shell”">"shell"</normalizedToken>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="38" pageNumber="83" type="distribution">
|
||
<paragraph pageId="38" pageNumber="83">Distribution.</paragraph>
|
||
<paragraph pageId="38" pageNumber="83">This species is known from several limestone hills in southern Thailand, particularly in the western part of the southern mainland. The animals can be found at altitudes up to 20 meters amsl.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="38" pageNumber="83" type="remarks">
|
||
<paragraph pageId="38" pageNumber="83">Remarks.</paragraph>
|
||
<paragraph pageId="38" pageNumber="83">
|
||
The genital system discriminates this new species from large individuals of
|
||
<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon roebeleni" order="Stylommatophora" pageId="38" pageNumber="83" phylum="Mollusca" rank="species" species="roebeleni">Discartemon roebeleni</taxonomicName>
|
||
, which is distributed throughout southern Thailand.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |