Biomphalaria kuhniana is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.

All species within the family Planorbidae have sinistral shells.

[1] A cladogram showing the phylogenic relationships of species within the genus Biomphalaria:[2] Biomphalaria stanleyi Biomphalaria pfeifferi Biomphalaria camerunensis Biomphalaria sudanica Biomphalaria choanomphala Biomphalaria alexandrina Biomphalaria smithi Biomphalaria glabrata Biomphalaria kuhniana Biomphalaria straminea Biomphalaria straminea Biomphalaria intermedia Biomphalaria amazonica Biomphalaria sp.

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