If you remember this particular pair of Harpies, then your childhood had a gem of having watched the 1963 film, “Jason and the Argonauts”.
The term is often used metaphorically to refer to a nasty or annoying woman. In Shakespeare’s Much Ado About Nothing, Benedick spots the sharp-tongued Beatrice approaching and exclaims to the Prince, Don Pedro, that he would do an assortment of arduous tasks for him “rather than hold three words conference with this harpy!”