The key includes eight genera known to occur in Australia and Papua New Guinea. These are Ctenarytaina Ferris & Klyver (type genus), Syncarpiolyma Froggatt, Eriopsylla Froggatt, Blastopsylla Taylor, Anoeconeossa Taylor, Leptospermonastes Taylor, and two new genera, Agelaeopsylla and Cryptoneossa. Keys to the species in Agelaeopsylh, Cryptoneossa and Leptospermonastes are given. Agelaeopsylla contains five new species, A. dividua (type species), A. maculatae, A. corymbiae, A. papuanae (which also occurs in Papua New Guinea), and A. insolita. They feed mainly on Angophora and two 'subgenera' of Eucalyptus (Corymbia and Blakella). The hosts of Cryptoneossa, which contains five new species, C. vulgaris (type species), C. occidentalis, C. triangula, C. minuta, and C. leptospermi, are mainly in the 'subgenera' Monocalyptus and Corymbia of Eucalyptus; some are found on Symphyomyrtus and smaller subgenera, one on Angophora, and one on Leptospermum. Two new species of Leptospermonastes are described; L. maculosipennis and L. fasciata were both collected from Melaleuca spp., a new host for this genus. Eriopsylla and its type species, E. viridis, are redescribed, with one new species, E. malleensis.