Io (mythology)

This article is about the mythological figure. For the moon of Jupiter, see Io (moon). In Greek mythology, Io (IPA  or ), (World Book «EYE oh»)a priestess of Hera in Argos who was seduced by Zeus, who changed her into a heifer to escape detection. Her mistress Hera set ever-watchful Argus Panoptes to guard her, but Hermes was sent to distract the guardian and slay him. Heifer Io was loosed to roam the world, stung by a maddening gadfly sent by Hera, and wandered to Egypt, thus placing her descendant Belus in Egypt; his sons Cadmus and Danaus would thus "return" to mainland Greece.
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