The Frit Flies (Chloropidae, Diptera) of Fennoscandia and Denmark is written by two leading experts on this large and difficult group of small to minute flies, Dr Emilia P. Nartshuk, Zoological Institute Academy of Sciences, St Petersburg, Russia, & Dr Hugo Andersson (deceased in 2008), Zoological Institute, Lund University, Sweden. The book covers the North European fauna of frit flies that totals 209 species in 48 genera including 11 species and 1 genus described as new to science. Several species are economically important as notorial pests of cereals and fodder grasses. This is the first comprehensive treatment ever of the entire North European fauna of frit flies. It primarily facilitates species identification, but further summarizes existing knowledge about nomenclature, biology, faunistics and literature. Keys are given to subfamilies, genera and species for the adults and for the known larvae to genus or even species level. The text is supplemented with numerous illustrations of characters of diagnostic importance. Species distributions in the Nordic countries are detailed in a catalogue.