Abstract

From non-urban habitats of Mazovia and from Warsaw 965 species of Ichneumonidae have been recorded, including 780 species from non-urban habitats. From the suburbs of Warsaw 553 species are known, and from urban green areas 381 species, including 344 species from parks, 106 from green areas of housing estates and 109 from the centre of the town. Thus the number o f species decreases with growing urban pressure. This factor also reduced the number of species in most of the seven guilds of parasitoids associated with specific host groups. Parasitoids of aphidophagous predators are an exception, the number of their species not being reduced in urban green areas. No effect of urban pressure on the proportion of different zoogeographical elements in Diplazontinae was recorded