sentence: subspecies there are recognized two subspecies : filopaludina javanica javanica ( von dem busch , 1844 ) filopaludina javanica continentalis or idiopoma javanica continentalis brandt , 1974 distribution map of filopaludina javanica distribution this species is found in thailand , cambodia , vietnam , laos , peninsular malaysia and indonesia ( sumatra and java ) .