Anceyoconcha chaudoensis (Rochebrune, 1881)

Sutcharit, Chirasak, Thach, Phanara, Chhuoy, Samol, Ngor, Peng Bun, Jeratthitikul, Ekgachai, Siriwut, Warut, Srisonchai, Ruttapon, Ng, Ting Hui, Pholyotha, Arthit, Jirapatrasilp, Parin & Panha, Somsak, 2020, Annotated checklist of the land snail fauna from southern Cambodia (Mollusca, Gastropoda), ZooKeys 948, pp. 1-46 : 1

publication ID

https://dx.doi.org/10.3897/zookeys.948.51671

publication LSID

lsid:zoobank.org:pub:20E7C613-5771-4F32-8F6C-44A7E84AFA68

persistent identifier

https://treatment.plazi.org/id/345FACC2-57F6-5EBD-A592-13F4FB14F3B7

treatment provided by

ZooKeys by Pensoft

scientific name

Anceyoconcha chaudoensis (Rochebrune, 1881)
status

 

Anceyoconcha chaudoensis (Rochebrune, 1881) Figs 5F View Figure 5 , 12E, F View Figure 12

Petraeus chaudoensis Rochebrune, 1881a: 70. Type locality: Montagnes de Chaudoe Cambodge [Chau Doc, An Giang Province, Vietnam].

Ena chaudocensis [sic]: Fischer 1973b: 90.

Material examined.

Locality no. 1: CUMZ-CM003 (20 shells; Fig. 12E, F View Figure 12 ), CUMZ-CM005 (1 specimen in ethanol; Fig. 5F View Figure 5 ). Locality no. 2: CUMZ-CM007 (9 shells). Locality no. 3: CUMZ-CM010 (1 specimen in ethanol). The snails were found to live on tree trunks and leaves.

Distribution.

Cambodia ( Fischer 1973b).

Remarks.

This species was originally described from "Montagnes de Chaudoe Cambodge" [Chau Doc, An Giang Province, Vietnam] probably in the area bordering Cambodia and Vietnam. The original description of this species was brief and without illustration. This species has a sinistral elongate conic to slightly ovate conic shell, with 7 to 9 whorls, which increase regularly; cylindrical, having convex whorl and wide and impressed suture. The shell surface possesses fine growth lines, and the periostracum is thin and brownish. The last whorl is well rounded and without keel near aperture and has a similar diameter to the penultimate whorl. The shell colour is light brownish and translucent (becoming whitish when worn). The aperture is semi-ovate, with expanded and whitish lip and thin or thickened with whitish parietal callus. The columella is straight and dilated, with a rimate umbilicus.

Based on the original description, A. chaudoensis can be distinguished from A. siamensis obesula in having an elongate cylindrical shell and higher number of whorls, while the latter species has an ovate conic shell and a smaller number of whorls.