In a preliminary study Psocoptera were periodically collected from eight habitats in Muogamarra Nature Reserve, near Sydney. Forty-three species were taken of which fifteen are described as new. Rainforest and Casuarina habitats yielded the greatest variety of species. Populations were highest in summer on Casuarina and showed little seasonal variation in rainforest; dry sclerophyll habitats, on the other hand, yielded greater populations in winter than summer. In each habitat one or two species were dominant. Acacia floribunda and Eucalyptus spp. were poorest in species and specimens.