<documentID-CLB-Dataset="5935"ID-DOI="http://dx.doi.org/10.3897/zookeys.1047.65735"ID-GBIF-Dataset="4078b31d-4bb5-4803-8dc6-8d0549f7a8f3"ID-PMC="PMC8257565"ID-Pensoft-Pub="1313-2970-1047-101"ID-Pensoft-UUID="199EAC1979F8501BB42D0A51CD52BB67"ID-PubMed="34248368"ID-ZooBank="12E8706355C44D5F821853F867E27908"ModsDocID="1313-2970-1047-101"checkinTime="1624985779365"checkinUser="pensoft"docAuthor="Sutcharit, Chirasak & Panha, Somsak"docDate="2021"docId="34F9EB4CC4FD593E9C6E7E720F72E575"docLanguage="en"docName="ZooKeys 1047: 101-154"docOrigin="ZooKeys 1047"docPubDate="2021-06-28"docSource="http://dx.doi.org/10.3897/zookeys.1047.65735"docTitle="Hemiplecta esculenta Maassen 2006"docType="treatment"docVersion="6"id="199EAC1979F8501BB42D0A51CD52BB67"lastPageNumber="101"masterDocId="199EAC1979F8501BB42D0A51CD52BB67"masterDocTitle="Systematic review of the dextral Hemiplecta Albers, 1850 (Eupulmonata, Ariophantidae) from Thailand with description of a new species and list of all the Indochinese species"masterLastPageNumber="154"masterPageNumber="101"pageNumber="101"updateTime="1732754143931"updateUser="ExternalLinkService">
<mods:titleid="28072CAC1954D3FED0515D63CD343D3F">Systematic review of the dextral Hemiplecta Albers, 1850 (Eupulmonata, Ariophantidae) from Thailand with description of a new species and list of all the Indochinese species</mods:title>
<mods:affiliationid="663352C23D9699F118AF38CCA708DFC6">Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand</mods:affiliation>
<mods:affiliationid="04628DFC16077DAC9809BB13014F2CCE">Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand & Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand</mods:affiliation>
<figureCitationid="1809D885B3E093B6371F23DB5B5A4AEF"captionStart="Figure 1"captionStartId="F1"captionText="Figure 1. Living snail. A Hemiplecta humphreysiana from Singapore (width about 45 mm) B, C Hemiplecta distincta B from Saraburi, Thailand (width about 65 mm) and C mating pairs D, E Hemiplecta funerea from Nan, Thailand (width about 50 mm) D yellow shell form and E dark shell form (width about 50 mm) F Hemiplecta esculenta from Chiang Mai, Thailand (width about 30 mm)."figureDoi="10.3897/zookeys.1047.65735.figure1"httpUri="https://binary.pensoft.net/fig/560488"pageId="0"pageNumber="101">Figures 1F</figureCitation>
<figureCitationid="ABAA05ADED90E3EC25955C50201A78A0"captionStart="Figure 5"captionStartId="F5"captionText="Figure 5. A, B Hemiplecta funerea, specimens CUMZ 4575 from Nan, Thailand A yellow shell form and B dark shell form C Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand."figureDoi="10.3897/zookeys.1047.65735.figure5"httpUri="https://binary.pensoft.net/fig/560492"pageId="0"pageNumber="101">, 5C</figureCitation>
<figureCitationid="69FE13DA8DB4B6CC0121CF72D947AB9F"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. Genitalia, mantle edge structure, and caudal region of Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand A whole genital organ B internal wall sculpture of penis, vagina and dart chamber C ventral view of mantle edge and D right view of caudal region."figureDoi="10.3897/zookeys.1047.65735.figure7"httpUri="https://binary.pensoft.net/fig/560494"pageId="0"pageNumber="101">, 7</figureCitation>
<figureCitationid="7990C4554119BADABD4FFBB94B5805CE"captionStart="Figure 10"captionStartId="F10"captionText="Figure 10. Representative SEM images of radula A-C Hemiplecta humphreysiana, specimen CUMZ 4573 from Singapore A central and lateral teeth B transition from lateral teeth to marginal teeth and C outermost marginal teeth D, E Hemiplecta distincta, specimen CUMZ 4560 from Chanthaburi, Thailand D central and lateral teeth and E outermost marginal teeth F, G Hemiplecta funerea, specimen CUMZ 4575 from Nan, Thailand F central and lateral teeth and G outermost marginal teeth H, I Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand H central and lateral teeth I transition from lateral teeth to marginal teeth J Hemiplecta nemorosa sp. nov., paratype CUMZ 5253 from Maehongsorn, Thailand. Central tooth indicated by ' C'. Numbers indicate the tooth order from lateral to marginal end."figureDoi="10.3897/zookeys.1047.65735.figure10"httpUri="https://binary.pensoft.net/fig/560497"pageId="0"pageNumber="101">, 10H, I</figureCitation>
<bibRefCitationid="AAA808679AA77B53AE8675C74A6D582A"DOI="https://doi.org/10.12657/folmal.027.007"author="Pall-Gergely, B"journalOrPublisher="Folia Malacologica"pageId="0"pageNumber="101"pagination="85 - 89"refId="B79"refString="Pall-Gergely, B, 2019. A new species of Hemiplecta Albers, 1850 from Vietnam (Gastropoda: Pulmonata: Ariophantidae). Folia Malacologica 27: 85 - 89, DOI: https://doi.org/10.12657/folmal.027.007"title="A new species of Hemiplecta Albers, 1850 from Vietnam (Gastropoda: Pulmonata: Ariophantidae)."url="https://doi.org/10.12657/folmal.027.007"volume="27"year="2019">
<figureCitationid="0440AFE007C8B4F3012D6D918677AE9A"captionStart="Figure 1"captionStartId="F1"captionText="Figure 1. Living snail. A Hemiplecta humphreysiana from Singapore (width about 45 mm) B, C Hemiplecta distincta B from Saraburi, Thailand (width about 65 mm) and C mating pairs D, E Hemiplecta funerea from Nan, Thailand (width about 50 mm) D yellow shell form and E dark shell form (width about 50 mm) F Hemiplecta esculenta from Chiang Mai, Thailand (width about 30 mm)."figureDoi="10.3897/zookeys.1047.65735.figure1"httpUri="https://binary.pensoft.net/fig/560488"pageId="0"pageNumber="101">1F</figureCitation>
<figureCitationid="A3FFEBE7B8DDD308B01F8F7EE84840E6"captionStart="Figure 5"captionStartId="F5"captionText="Figure 5. A, B Hemiplecta funerea, specimens CUMZ 4575 from Nan, Thailand A yellow shell form and B dark shell form C Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand."figureDoi="10.3897/zookeys.1047.65735.figure5"httpUri="https://binary.pensoft.net/fig/560492"pageId="0"pageNumber="101">5C</figureCitation>
), elevated to slightly depressed, upper surface with distinct nodules arranged on growth line, and lower shell surface nearly smooth. Last whorl keeled; aperture large and ovate; lip simple to slightly expanded and dark brown. Umbilicus widely opened and deep (Fig.
<figureCitationid="ED3EB8ED68703BCB9CE14BF586D39314"captionStart="Figure 5"captionStartId="F5"captionText="Figure 5. A, B Hemiplecta funerea, specimens CUMZ 4575 from Nan, Thailand A yellow shell form and B dark shell form C Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand."figureDoi="10.3897/zookeys.1047.65735.figure5"httpUri="https://binary.pensoft.net/fig/560492"pageId="0"pageNumber="101">5C</figureCitation>
<figureCitationid="F1979B2D102BD5DAA41FAFF0784AE0FE"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. Genitalia, mantle edge structure, and caudal region of Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand A whole genital organ B internal wall sculpture of penis, vagina and dart chamber C ventral view of mantle edge and D right view of caudal region."figureDoi="10.3897/zookeys.1047.65735.figure7"httpUri="https://binary.pensoft.net/fig/560494"pageId="0"pageNumber="101">7A</figureCitation>
). Internal wall of penis with sculpture encircling penial verge. Penial sculpture (ps) consists of small to large papillary knobs arranged in oblique lines on penial wall; relatively smaller knobs surrounding penial verge. Penial verge (pv) small, short, conic, and with smooth surface (Fig.
<figureCitationid="07F552C0AD8E7E540028D55DC8581C0A"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. Genitalia, mantle edge structure, and caudal region of Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand A whole genital organ B internal wall sculpture of penis, vagina and dart chamber C ventral view of mantle edge and D right view of caudal region."figureDoi="10.3897/zookeys.1047.65735.figure7"httpUri="https://binary.pensoft.net/fig/560494"pageId="0"pageNumber="101">7B</figureCitation>
). Gametolytic sac (gs) bulbous with undifferentiated duct. Internal wall of vagina with series of thin longitudinal vaginal pilasters (vp). Dart apparatus (da) relatively short; internal wall of chamber with smooth wall, and papilla of dart apparatus (dp) slightly elongate, conic, and with smooth surface (Fig.
<figureCitationid="6346B4505D0B5FED7DABF40984279B38"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. Genitalia, mantle edge structure, and caudal region of Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand A whole genital organ B internal wall sculpture of penis, vagina and dart chamber C ventral view of mantle edge and D right view of caudal region."figureDoi="10.3897/zookeys.1047.65735.figure7"httpUri="https://binary.pensoft.net/fig/560494"pageId="0"pageNumber="101">7B</figureCitation>
<figureCitationid="E5CF8E1CB160A032E5E5326043195E49"captionStart="Figure 10"captionStartId="F10"captionText="Figure 10. Representative SEM images of radula A-C Hemiplecta humphreysiana, specimen CUMZ 4573 from Singapore A central and lateral teeth B transition from lateral teeth to marginal teeth and C outermost marginal teeth D, E Hemiplecta distincta, specimen CUMZ 4560 from Chanthaburi, Thailand D central and lateral teeth and E outermost marginal teeth F, G Hemiplecta funerea, specimen CUMZ 4575 from Nan, Thailand F central and lateral teeth and G outermost marginal teeth H, I Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand H central and lateral teeth I transition from lateral teeth to marginal teeth J Hemiplecta nemorosa sp. nov., paratype CUMZ 5253 from Maehongsorn, Thailand. Central tooth indicated by ' C'. Numbers indicate the tooth order from lateral to marginal end."figureDoi="10.3897/zookeys.1047.65735.figure10"httpUri="https://binary.pensoft.net/fig/560497"pageId="0"pageNumber="101">10H</figureCitation>
). Lateral teeth tricuspid; endocone small; mesocone large with pointed tip; ectocone large, basal, and with pointed tip. Outer lateral teeth arranged slightly obliquely, bicuspid; endocone very small to absent; mesocone large trapezoid; ectocone basal, relatively small, and pointed tip. Latero-marginal transition starts from tooth no. 18 to 21. Marginal teeth with curved teeth, bicuspid; endocone usually larger than ectocone (Fig.
<figureCitationid="E95E6B49DA638B936D67E0BAC30FD38D"captionStart="Figure 10"captionStartId="F10"captionText="Figure 10. Representative SEM images of radula A-C Hemiplecta humphreysiana, specimen CUMZ 4573 from Singapore A central and lateral teeth B transition from lateral teeth to marginal teeth and C outermost marginal teeth D, E Hemiplecta distincta, specimen CUMZ 4560 from Chanthaburi, Thailand D central and lateral teeth and E outermost marginal teeth F, G Hemiplecta funerea, specimen CUMZ 4575 from Nan, Thailand F central and lateral teeth and G outermost marginal teeth H, I Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand H central and lateral teeth I transition from lateral teeth to marginal teeth J Hemiplecta nemorosa sp. nov., paratype CUMZ 5253 from Maehongsorn, Thailand. Central tooth indicated by ' C'. Numbers indicate the tooth order from lateral to marginal end."figureDoi="10.3897/zookeys.1047.65735.figure10"httpUri="https://binary.pensoft.net/fig/560497"pageId="0"pageNumber="101">10I</figureCitation>
<figureCitationid="F27168FF7E8AED772A379621FF24839A"captionStart="Figure 7"captionStartId="F7"captionText="Figure 7. Genitalia, mantle edge structure, and caudal region of Hemiplecta esculenta, specimen CUMZ 4553 from Chiang Mai, Thailand A whole genital organ B internal wall sculpture of penis, vagina and dart chamber C ventral view of mantle edge and D right view of caudal region."figureDoi="10.3897/zookeys.1047.65735.figure7"httpUri="https://binary.pensoft.net/fig/560494"pageId="0"pageNumber="101">7D</figureCitation>
<figureCitationid="49EDC05EE4AB0F6926B50C1835E91D7A"captionStart="Figure 1"captionStartId="F1"captionText="Figure 1. Living snail. A Hemiplecta humphreysiana from Singapore (width about 45 mm) B, C Hemiplecta distincta B from Saraburi, Thailand (width about 65 mm) and C mating pairs D, E Hemiplecta funerea from Nan, Thailand (width about 50 mm) D yellow shell form and E dark shell form (width about 50 mm) F Hemiplecta esculenta from Chiang Mai, Thailand (width about 30 mm)."figureDoi="10.3897/zookeys.1047.65735.figure1"httpUri="https://binary.pensoft.net/fig/560488"pageId="0"pageNumber="101">1F</figureCitation>
<bibRefCitationid="95937DFCB1ED9370637E5452019DE546"author="Maassen, WJM"journalOrPublisher="Basteria"pageId="0"pageNumber="101"pagination="13 - 18"refId="B62"refString="Maassen, WJM, 2006. Four new species of terrestrial gastropods from Tonkin, North Vietnam (Gastropoda: Diplommatinidae: Strobilopsidae and Ariophantidae). Basteria 70: 13 - 18"title="Four new species of terrestrial gastropods from Tonkin, North Vietnam (Gastropoda: Diplommatinidae: Strobilopsidae and Ariophantidae)."volume="70"year="2006">Maassen 2006</bibRefCitation>
<bibRefCitationid="D729DBE998760D3FBEA9050471037E81"author="Maassen, WJM"journalOrPublisher="Basteria"pageId="0"pageNumber="101"pagination="13 - 18"refId="B62"refString="Maassen, WJM, 2006. Four new species of terrestrial gastropods from Tonkin, North Vietnam (Gastropoda: Diplommatinidae: Strobilopsidae and Ariophantidae). Basteria 70: 13 - 18"title="Four new species of terrestrial gastropods from Tonkin, North Vietnam (Gastropoda: Diplommatinidae: Strobilopsidae and Ariophantidae)."volume="70"year="2006">Maassen (2006)</bibRefCitation>
<bibRefCitationid="42AC86B18E3660E203E3CD6CCB540A5A"author="Maassen, WJM"journalOrPublisher="Basteria"pageId="0"pageNumber="101"pagination="13 - 18"refId="B62"refString="Maassen, WJM, 2006. Four new species of terrestrial gastropods from Tonkin, North Vietnam (Gastropoda: Diplommatinidae: Strobilopsidae and Ariophantidae). Basteria 70: 13 - 18"title="Four new species of terrestrial gastropods from Tonkin, North Vietnam (Gastropoda: Diplommatinidae: Strobilopsidae and Ariophantidae)."volume="70"year="2006">Maassen 2006</bibRefCitation>
), and none of the topotypic specimens have subsequently been examined. The samples from Thailand show only minor variations from the type series, in the presence of a narrow brownish spiral band and slightly elevated spire, which we attribute to intraspecific variation. It is important to examine the genitalia of the topotypic material.
