All those interested in the species identification, distribution or biology of north European beetles or freshwater invertebrates, as well as those studying northern faunas of Dytiscidae elsewhere in the world.
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Anders N. Nilsson, Associate Professor in Zoology at the Department of Biology, University of Umeå, Sweden. He has published more than 100 international papers on ecology and systematics of water beetles. He is the editor of a taxonomic handbook of the aquatic insects of N.W. Europe.
Mogens Holmen, scientific candidate (1968) in Biology, University of Copenhagen, is an amateur entomologist, professionally employed at the Landscape Department of the Frederiksborg County Council. Publication of aquatic Coleoptera include The aquatic Adephaga of Fennoscandia and Denmark I (Brill, 1987).
This volume treats the 157 species of predaceaous diving beetles (Dytiscidae) found in Finland, East Fennoscandia, Sweden, Norway, Denmark and the Baltic States.
Introducing chapters provide general information about the state of knowledge and distribution, morphology of adults and larvae, bionomics, collecting and rearing. The main part comprises keys and descriptions for identification of adult beetles, including information on distribution and biology of all species. A catalogue shows provincial records in Fennoscandia and Denmark. The book contains 608 figures and 3 plates.
An up-to-date, well illustrated identification manual for the Fennoscandian and Danish Dytiscidae has been wanting for decades. This work is based on the latest advances in synonymy and taxonomy of the family, and on the study of thousands of specimens in collections and field.
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