[Estivation of Biomphalaria tenagophila (Pulmonata, Planorbidae)]

This study reports the finding of Biomphalaria tenagophila naturally aestived in two municipalities of the State of S. Paulo (Brazil): Ubatuba and Conchas. This ethological characteristic was discovered in 15 specimens collected in Ubatuba, and in 6 specimens collected in Conchas. The snails aestived showed vitality after being placed in water.