I checked out the site posted by Camma. It was very interesting! I'd been taught about Lytta in reference to Bacchus, but I never knew that she was the one to enspire Herakles to madness! The way I learned was that she was present when Herakles' cousin was accidentally murdered during the Bacchinal festival. During this time the women are in a rage, inspired by Lytta, and drunk on the wine of Bacchus. They are known to flee to the woods where they would tear apart animals and consume their flesh raw! During this time a servant of Hera, Herakles' aunt was one of the women. She saw her son, who had been bound and gagged and disguised, and thought to make him a sacrifice so she and the others tore him apart. It wasn't until after he was bleeding to death that she removed his mask and saw that he was her son. After her son's death she calls on Hera, who hates Herakles, to take vengence on him for the death of her son.