Belinda belongs to Portia Group of moons , which also includes Bianca , Cressida , Desdemona , Portia , Juliet , Cupid , Rosalind and Perdita . Belinda belongs to the Portia Group of satellites , which also includes Bianca , Cressida , Desdemona , Portia , Juliet , Cupid , Rosalind and Perdita .