Idiopoma umbilicata (Lea, 1856)

Ng, Ting Hui, Jeratthitikul, Ekgachai, Sutcharit, Chirasak, Chhuoy, Samol, Pin, Kakada, Pholyotha, Arthit, Siriwut, Warut, Srisonchai, Ruttapon, Hogan, Zeb S. & Ngor, Peng Bun, 2020, Annotated checklist of freshwater molluscs from the largest freshwater lake in Southeast Asia, ZooKeys 958, pp. 107-141 : 107

Idiopoma umbilicata (Lea, 1856) Fig. 5F

Paludina umbilicata Lea, 1856: 109. Type locality: "Takrong River, Siam".

Idiopoma umbilicata : Brandt 1974: 34-35, pl. 2, fig. 35.

Material examined.

ZRC.MOL.015734, ZRC.MOL.015735, ZRC.MOL.015736, ZRC.MOL.015737, ZRC.MOL.015738, ZRC.MOL.015739, ZRC.MOL.015740, ZRC.MOL.015741, ZRC.MOL.015742.

Distribution and habitat.

Tonle Sap Lake and tributaries at Kampong Chhnang, Battambang, Siem Reap and Kampong Thom Provinces, irrigation ponds and paddy fields at Banteay Meanchey and Siem Reap Provinces (locality no. 7, 13, 24, 29 and 39).

Remarks.

Idiopoma umbilicata is often found together with Filopaludina martensi cambodjensis and can be differentiated from the latter species by its smaller size and shouldered shells. It does not appear to be harvested for food.

Figures

Figure 5. Freshwater gastropods of the Tonle Sap basin, Cambodia A Pila gracilis B Pila pesmei C Pila virescens D Pomacea maculata E Filopaludina martensi cambodjensis F Idiopoma umbilicata G Mekongia rattei H Trochotaia trochoides I Bithynia siamensis goniomphalus J Wattebledia siamensis K Anentome cambojiensis L Anentome helena M Sulcospira housei N Melanoides tuberculata O Indoplanorbis exustus and P Radix rubiginosa. Scale bars: 10 mm, unless stated otherwise. Photographs by TH Ng.