Anentome helena (von dem Busch in Philippi, 1847)

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

Anentome helena (von dem Busch in Philippi, 1847) Fig. 5L

Melania helena von dem Busch in Philippi, 1847: 170, pl. 4, fig. 4. Type locality: Java.

Clea (Anentome) helena : Brandt 1974: 201-202, pl. 15, figs 64, 65.

Material examined.

CIFI.MOL.035, ZRC.MOL.015702, ZRC.MOL.015703, ZRC.MOL.015704, ZRC.MOL.015705, ZRC.MOL.015706, ZRC.MOL.015707.

Distribution and habitat.

Tonle Sap River, Lake and surrounding tributaries, irrigation ponds and canals (locality no. 2, 7, 8, 10, 11, 13, 16, 17, 21, 22, 24, 25, 26, 34, 38, 40, 41, 42, and 44).

Remarks.

The species recognised as Anentome helena in Indo-China may in fact be a complex of three species ( Strong et al. 2017), however further studies need to be conducted to determine which clade the Cambodian ones belong to. Pending systematic revision of this taxon, the name Anentome helena is herein used for the species in Cambodia. Anentome helena may be found in similar habitats as Anentome cambojiensis in the Lake but does not occur in as high numbers as the latter species. Beyond the Lake, it was commonly found in tributaries and other water bodies.

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.