We describe a biphallic specimen of Biomphalaria glabrata (Say, 1818)
from the municipality of Caete, State of Minas Gerais, Brazil. The con
formation of the two penial complexes, with a common genital pore on t
he left side, suggests that both have copulatory capacity. Based on a
review of the literature this type of biphally appears to be reported
for the first time in planorbids.