2. The name of a mythical being said to have reared Artemis (Schol. ad Callim. l.c.), and who is mentioned by Virgil as one of the nymphs in her train. (Aen. 11.532.) The masculine Upis is mentioned by Cicero (De Nat. Deor. 3.23), as the father of Artemis.
A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890