This series of books, planned to be published in 3 parts, covers the entire Swedish spider fauna of 735 so far known species. Part 1 describes 18 families - 199 species. Each of them is illustrated with one plate of figures (each with 4-9 figures) making a total of about 1,300 figures. The vast majority of them is drawn by the author from living specimens showing both the habitus of the species and details important for the determination of the species. The first chapter gives a brief, illustrated, description of spider morphology together with a complete list of all Swedish spider taxa, an explanation of abbreviations used in the illustrations and of the distributions maps that accompanies all the species.
Each family, subfamily, species-group and genus is diagnosed and a key with ample references to illustrations is given. For each species a description of male and female morphology and colors is given together with relevant measurements. Under the heading "Distribution" the known distribution of the species is found (like Palaearctic, Scandinavia, Britain etc.) For Sweden the distribution is mapped and also given as a list of land-scapes.
In "Habitat" information on the kind of biotopes in which the species lives, is found, while "Biology" describes mating behaviour, feeding and season of appearance for adults and spiderlings in Sweden.