New feather mite species (Acari,Astigmata) from the Sulphur-crested Cockatoo <Emphasis Type="Italic">Cacatua galerita</Emphasis> and Yellow-crested Cockatoo <Emphasis Type="Italic">C. sulphurea</Emphasis> (Psittaciformes,Cacatuidae)

Two new genera and three new species of feather mites (Astigmata, Pterolichoidea, Analgoidea) are described from two closely related species of cockatoos, Cacatua galerita (type host) and C. sulphurea (Psittaciformes, Cacatuidae): Astrolabelichus caudatus gen. nov., sp. nov. (Pterolichidae), Psittophagus lacunosus sp. nov. (Pterolichidae), and Cacatualges microdiscus gen. nov., sp. nov. (Xolalgidae). The presence of the same set of mite species on these two species of parrots points to a very close affinity of Cacatua sulphurea and C. galerita and gives additional support for the recent hypothesis of the conspecificity of these birds.