DiazonidaeDiazonidae is a family of sea squirts belonging to the order Aplousobranchia.GeneraGenera in the family Diazonidae include:Diazona Savigny, 1816Pseudodiazona Millar, 1963Pseudorhopalaea Millar, 1975Rhopalaea Philippi, 1843Tylobranchion Herdman, 1886