Sparagmos

Sparagmos (, from σπαράσσω "sparasso", "tear, rend, pull to pieces") is an act of rending, tearing apart, or mangling, usually in a Dionysian context.
In Dionysian rite as represented in myth and literature, a living animal, or sometimes even a human being, is sacrificed by being dismembered. "Sparagmos" was frequently followed by omophagia (the eating of the raw flesh of the one dismembered). It is associated with the Maenads or Bacchantes, followers of Dionysus, and the Dionysian Mysteries. Historically, however, there is little indication that women celebrating the rites of Dionysus dismembered animals or ate raw flesh.
Examples of "sparagmos" appear in Euripides's play "The Bacchae". In one scene guards sent to control the Maenads witness them pulling a live bull to pieces with their hands. Later, after King Pentheus has banned the worship of Dionysus, the god lures him into a forest, to be torn limb from limb by Maenads, including his own mother Agave. According to some myths, Orpheus, regarded as a prophet of Orphic or Bacchic religion, died when he was dismembered by raging Thracian women. 
Medea.
Medea is said to have killed and dismembered her brother whilst fleeing with Jason and the stolen fleece in order to delay their pursuers, who would be compelled to collect the remains of the prince for burial. The Italian film director Pier Paolo Pasolini staged a sparagmos ritual as part of a long sequence near the beginning of his film "Medea" (1969), before dramatising the episode in which Medea kills her brother in a similar way.
Modern literature and theory.
Interpreting the ritual through the lens of the Freudian Oedipus complex, Catherine Maxwell identifies "sparagmos" as a form of castration, particularly in the case of Orpheus.
In contemporary literature, this is used in Tennessee Williams's play "Suddenly, Last Summer". 
Sparagmos is also briefly mentioned in Donna Tartt's "The Secret History".
Sparagmos is a central theme in Dimitris Lyacos's The First Death recounting the torments of a mutilated protagonist stranded on an island. The book draws upon the dismemberment of Dionysus as well as ancient Greek rituals and practices.