Examination of type specimens of some of the Aspidiotini from Australia described by Maskell and other relevant material has enabled the following conclusions. Aspidiotus acaciae Morgan, Pseudaonidia junctiloba Marlatt and Aspidiotus junctilobius Froggatt are synonyms of Aspidiotus eucalypti Maskell, which is correctly placed in the genus Neomorgania and now becomes the genotype. The variety comatus Maskell of Aspidiotus eucalypti Maskell represents a distinct species, and belongs to the genus Pseudotargionia. Aspidiotus virescens Maskell is a synonym of Diaspis fimbriata Maskell which is now made the genotype of a new genus Megaspidiotus. The characters of Aspidiotus casuarinae Maskell conform with those of the genus Pseudaonidia but as the type appears to be an immature adult further material is needed for examination. These species have been re-described and re-illustrated
