In Greek mythology
was a son of Aphareus
and brother of Lynceus
. He and Lynceus loved Hilaeira
and killed their rival suitors, Castor and Polydeuces
He was also one of the Argonauts and a participant in the hunt for the Calydonian Boar.
He kidnapped Marpessa. Apollo also desired her and Zeus made the girl choose.
Idas had one daughter named Cleopatra.