Filopaludina martensi cambodjensis (Mabille & Le Mesle, 1866)

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

Filopaludina martensi cambodjensis (Mabille & Le Mesle, 1866) Fig. 5E

Paludina cambodjensis Mabille & Le Mesle, 1866: 135, pl. 7, fig. 4. Type locality: "Moth-Kasa, dans les marais".

Filopaludina (Siamopaludina) martensi cambodjensis : Brandt 1974: 28, pl. 2, fig. 24.

Material examined.

CIFI.MOL.033, CIFI.MOL.041, ZRC.MOL.015715, ZRC.MOL.015716, ZRC.MOL.015717, ZRC.MOL.015718, ZRC.MOL.015719, ZRC.MOL.015720, ZRC.MOL.015721, ZRC.MOL.015722, ZRC.MOL.015723, ZRC.MOL.015724, ZRC.MOL.015725, ZRC.MOL.015726, ZRC.MOL.015727, ZRC.MOL.015728, ZRC.MOL.015729, ZRC.MOL.015730, ZRC.MOL.015731, ZRC.MOL.015732, ZRC.MOL.015733.

Distribution and habitat.

Tonle Sap River and Lake, and surrounding watershed including rivers, irrigation ponds and paddy fields (locality no. 1, 2, 3, 5, 8, 9, 10, 11, 12, 13, 16, 17, 19, 20, 21, 22, 24, 32, 37, 38, 40, 42 and 44).

Remarks.

Filopaludina martensi cambodjensis is said to be lacking in spiral ridges compared to Filopaludina martensi martensi (Frauenfeld, 1865) (see Brandt 1974), but our specimens showed some variation, with some displaying ridges. The validity of the various Filopaludina martensi subspecies have not been investigated in detail to date. The species is sold in local markets, but did not appear to be harvested in as large quantities as Mekongia rattei (Crosse & Fischer, 1876), and its annual harvest at five main landing points in Kampong Chhnang Province has previously been recorded to be 68 tonnes, only ca. 1/5th of the Mekongia swainsoni (Lea, 1856) that were obtained ( Ngor et al. 2016).

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.