Their cult centered around three small lakes that emitted sulphurous vapors in the Palagonia plain, and as a result these twin brothers were associated with geysers and the underworld.
The diocese consists of fifteen towns in the province of Catania: Caltagirone, Castel di Judica, Grammichele, Mazzarrone, San Michele di Ganzaria, Raddusa, Ramacca, Mirabella Imbaccari, Scordia, Militello in Val di Catania, Palagonia, Mineo, Licodia Eubea, San Cono and Vizzini.