Amphidromus (Syndromus) xiengkhaungensis Inkhavilay & Panha, 2017
publication ID |
https://doi.org/ 10.5852/ejt.2017.330 |
publication LSID |
lsid:zoobank.org:pub:FDFA7FAC-FC92-404B-9058-A426DAB6C693 |
DOI |
https://doi.org/10.5281/zenodo.3848189 |
persistent identifier |
https://treatment.plazi.org/id/7BA4B989-3003-4F09-94E5-F21B392BEA28 |
taxon LSID |
lsid:zoobank.org:act:7BA4B989-3003-4F09-94E5-F21B392BEA28 |
treatment provided by |
Carolina |
scientific name |
Amphidromus (Syndromus) xiengkhaungensis Inkhavilay & Panha |
status |
sp. nov. |
Amphidromus (Syndromus) xiengkhaungensis Inkhavilay & Panha View in CoL sp. nov.
urn:lsid:zoobank.org:act:7BA4B989-3003-4F09-94E5-F21B392BEA28
Figs 1 View Fig , 13 View Fig S–T; Table 1 View Table 1
Diagnosis
The new species is superficially similar to A. roemeri , but the distinguishing characters are a relatively large and thick shell, dark to brownish spire, Bands 2 and 3 merged and become tinted pink stained, with a pale tinted pink lip. In contrast, A. roemeri shows a relatively small and thin shell, whitish ground color, Bands 2 and 3 absent, and has a white lip. Amphidromus xiengkhaungensis sp. nov. differs from A. sinensis and A. flavus by having an ovated conic shell, Bands 2 and 3 stained with tinted pink, ovate aperture and slightly angular last whorl. In comparison, A. sinensis and A. flavus have an elongate conical, relatively small and thin shell, with a yellowish color and rounded last whorl. In addition, A. globonevilli differs from this new species by having a small and thin shell, with a yellowish color, last whorl rounded and Bands 2 and 3 absent.
Etymology
The specific epithet ‘ xiengkhaungensis ’ refers to the type locality of the new species.
Type material
Holotype
LAOS: shell height 25.6 mm, shell width 15.6 mm, with 6 whorls ( CUMZ 7045 , Fig. 13S View Fig ).
Paratypes
LAOS: 10S shells ( CUMZ 7046, Fig. 13T View Fig ); 2S shells ( NHMUK).
Type locality
LAOS: limestone outcrop at Ban Nong Tang, Phou Kood District, Xieng Khaung, 19°30′59.2″ N, 102°53′37.6″ E, 1140 m amsl.
Description
Shell sinistral, ovate conical, rather thick and glossy. Apex acute, color tinted pink; spire conical with dark color; suture wide and depressed. Whorls 5 and 6 nearly smooth; last whorl slightly angular. Periostracum thin, corneous and transparent. Earlier whorls with darker color; varix absent. Shell banding without Band 1; Bands 2 and 3 merged and becoming tinted pink stained; Bands 4 and 5 dark brown; Band 6 absent. Parietal callus thin and transparent to slightly thick and white. Aperture ovate; peristome expanded and weakly thickened; lip pale tinted pink to white. Columella straight, thickend and white. Umbilicus narrowly opened.
Remarks
Amphidromus xiengkhaungensis sp. nov. is currently known from the type locality only, a dry green forest and isolated limestone forest surrounded by a reservoir and agricultural areas. The empty shells were found on the floor among the leaf litter. Unfortunately, no living specimens have been collected.
CUMZ |
Cameroon University, Museum of Zoology |
NHMUK |
Natural History Museum, London |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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