This volume contains richly illustrated keys and descriptions of the 157 species of predaceous diving beetles (Dytiscidae) found in Fennoscandia, Denmark and th

This volume treats the 157 species of predaceaous diving beetles (Dytiscidae) found in Finland, East Fennoscandia, Sweden, Norway, Denmark and the Baltic States

The book provides richly illustrated identification keys and descriptions of the ca. 240 Nordic springtail species of Entomobryomorpha and Symphypleona, thus co