 In 2005 Cerrina was the centre of swarms of locusts or grasshoppers (the local "Calliptamus italicus") which, unprecedented in their magnitude and moving at speeds of up to , threatened the vineyards of Monferrato and the province of Asti.Mayor of Cerrina Pier Valentino Piva was quoted as saying that "there are thousands of them massed on the walls of our houses from morning to night.It seems as though here we are living through a scourge from the Bible".