Biomphalaria straminea

Biomphalaria straminea is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails. This snail is a medically important pest, because an intermediate host for the parasite Schistosoma mansoni and a vector of schistosomiasis. The history of these discoveries was summarized by Paraense (2001).