In Greek mythology, Amphithea (Ancient Greek Ἀμφιθέα) is a name borne by several women. The atlas node amphithea-adrastid is the daughter of Pronax who marries Adrastus of Argos and bears Argia, Deipyle, Aegialia, Aegialeus, and Cyanippus — the Biantid brood that binds Argos to the wars of the Seven.
Adapted from Wikipedia, "Amphithea" · CC BY-SA 4.0
I.Wife of Adrastus
Apollodorus gives her in a single genealogical breath: Adrastus had by Amphithea, daughter of Pronax, three daughters and two sons. Through Argia's and Deipyle's marriages to Polynices and Tydeus she stands at the Argive centre of the Theban wars; Aegialeus and Cyanippus carry the male line forward.
Other Amphitheas — Autolycus' wife and Odysseus' grandmother, Lycurgus of Nemea's consort in some accounts, Aeolus' Etrurian queen — are distinct. The atlas keeps this node strictly as Adrastus' Argive queen.