In Greek mythology, Idas (Greek: Ἴδας) was a son of Aphareus and Arene and brother of Lynkeus. He and Lynkeus loved Hilaeira Phoebe and fought with their rival suitors, Kastor and Polydeukes, killing the mortal brother Kastor. He was also one of the Argonauts and a participant in the hunt for the Kalydonian Boar. He kidnapped Marpessa. Apollo also desired her and Zeus made the girl choose. She chose the mortal Idas, fearing that Apollo could abandon her when she grew old. With Marpessa, Idas had one daughter named Kleopatra.
Aphareus and Arene or Poseidon and Arene
Time As An Argonaut
Idas was the Argonaut who on their journey to fetch the Golden Fleece, avenged the death of fellow fallen Argonaut Idmon, the son of Apollo. Idas did this by slaying the wild boar that wounded and killed the seer. Other than that not much is not quite known but he joined along with his two brothers.
Kalydonian Boar Hunt
His role is hunt was not defined but Hyginus lists him among those who were involved in The Kalydonian Boar Hunt.
- Apollonius of Rhodes, Argonautica 1.151 "The sons of Aphareus, Lynceus and proud Idas, came from Arene, both exulting in their great strength; and Lynceus too excelled in keenest sight, if the report is true that that hero could easily direct his sight even beneath the earth."
- Hyginus. Fabulae, 173 Castor and Pollux, sons of Jove. Eurytus son of Mercury . . . Parth* . . . Echion, son of Mercury [from Thebes]. Aesculapius, son of Apollo. Jason, son of Aeson [fom Thebes]. Alcon, son of Mars, from Thrace. Euphemus, son of Neptune. Iolaus, son of Iphiclus. Lynceus and Idas, sons of Aphareus. Peleus, son of Aeacus. Telamon, son of Aeacus. Admetus, son of Pheres. Laertes, son of Arcesius. Deucalion, son of Minos. Theseus, son of Aegeus. Plexippus . . . [Ideus Lynceus] sons of Thestius, brothers of Althaea. Hippothous, son of Cercyon. Caeneus, son of Elatus, Mopsus, son of Ampycus. Meleager, son of Oeneus. Hippasus, son of Eurytus. Ancaeus, son of Lycurgus. Phoenix, son of Amyntor. Dryas, son of Iapetus. Eneasimus, Alcon, Leucippus, sons of Hippocoon from Amyclae. Atlanta, daughter of Schoeneus.