original description(ofSphaerium japonicum okinawaense Mori, 1937)Mori S. (1937). On the classification of Japanese Sphaerium. <em>Venus, Japanese Journal of Malacology.</em> 7(4): 170-172. page(s): 171, textfig. [details] Available for editors [request]
Present Inaccurate Introduced: alien Containing type locality