Review of Australian Asperoseius Chant, Euseius Wainstein, Okiseius Ehara and Phytoscutus Muma (Acari : Mesostigmata : Phytoseiidae) with a key to the genera of Australian Amblyseiinae and descriptions of two new species

Previous workers have used a conservative generic classification of the sub family Amblyseiinae that treated most Australian Phytoseiidae as species in the genus Amblyseius Berlese. However, this lumping masks the occurrence o f a number of genera recognised overseas, including some that contain impor tant biological control agents. In this review, a key to the genera of Aust ralian Amblyseiinae is provided and the Australian species in four amblysei ine genera are reviewed and keyed. Asperoseius Chant is represented by a si ngle known Australian species, A. australiensis Fain and Krantz collected f rom a Culicoides midge in South Australia. Six species of Euseius Wainstein are recognised in Australia, including four endemics: E. dowdi (Schicha), E. elinae (Schicha), E. neovictoriensis (Schicha), and E. victoriensis (Sch icha), and two Asia-Pacific species: E. noumeae (Schicha) and E. ovalis (Ev ans). Okiseius Ehara is represented in Australia by the previously describe d O. morenoi Schicha and O. domatorum (Schicha); the Asian species O. subtr opicus Ehara (new record); and two new species, O, tribulation and O. cowba y described from tropical rainforest in Far North Queensland. Phytoscutus a caridophagus Collyer, a mite described from New Zealand, is reported in ass ociation with acarid mites (Neotropacarus sp.) in Victoria and in Queenslan d.