|Melanoides in Montana and
Colorado. Radix (Asian) in the Platte and upper Arkansas in CO. Japonica reported from Oklahoma and
Nebraska. Chinensis reported from the Miss Basin from IL, IN, IA, MN, WI. The New Zealand mudsnail is in the
headwaters of the Missouri R in MT. I
might assume that these species are all well established in order to be
detected and are probably more widespread than reported.