In ancient Greek religion, Myiagros ("He Who Chases the Flies") or Myacoris was a cult title for a divine figure who warded off flies. It could be used as an epithet for either a divinity or a hero.
Pausanias characterizes Myiagros as a divinized mortal who received an offering preliminary to the main sacrifice for Athene at Alipheira in Arcadia. The intention was to ward off flies in advance of an animal sacrifice, which might be expected to attack them to its detriment. Aelian says the advance offering was made to the flies themselves.
The Alipheiran cult was perhaps influenced by rites in Elis at Olympia. The Eleans made sacrifices either to the flies themselves, or to a Zeus Apomyios ("Shoo-Fly Zeus") or a god named Myiodes or Myiakores. There was a similar ritual among the Akarnanians. An Elean myth told of how Herakles was troubled by flies when he was trying to sacrifice at Olympia, and was instructed in how to sacrifice to the Zeus who shoos away flies (Ἀπόμυιος), so that the flies were at once driven across the Alpheus. In cultivating Apollo at Leucas, a similar preliminary rite was enacted.
- Pausanias 8.26.7 and 5.14.1.
- Antiphanes, frg. 229/30 K (preserved by Athenaeus 1).
- Pliny, Natural History 10.40 (=28).
- Aelian, Historiae Animalium 5.17 and 10/11.8
- Heraclides Ponticus, as cited by Clement of Alexandria, Protrepticon 2.38.33P
- Robert Parker, On Greek Religion (Cornell University Press, 2011), pp. 105–106.
- Joseph William Hewitt, "The Propitiation of Zeus," Harvard Studies in Classical Philology 19 (1908), p. 115.
- Lewis Richard Farnell, The Cults of the Greek States (Oxford: Clarendon Press, 1896), vol. 1, p. 45.
- Hewitt, "The Propitiation of Zeus," p. 115.
- Pausanias 4.3.9; the other source for the title for Zeus is Clement of Alexandria.
- James Roy, "The Frontier between Arkadia and Elis in Classical Antiquity," in Polis and Politics (Museum Tusculanum Press, 2000), p. 153.
- Farnell, The Cults of the Greek States, p. 45.
- Pliny, Natural History 10.40 (=28): Elei Myacoren deum muscarum multitudine pestilentiam adferente, quae protinus intereunt quam litatum est ei deo.
- As for instance, the 1907 Catholic Encyclopedia, vol. 2, p. 388, with other examples.