Harmful insects of wood in a open-air museum were investigated in 1985-1988 by order of the National Board of Antiquities and Historical Monuments of Finland in nine old log houses. Many thousands of insects and altogether 1073 anobiids (Coleoptera, Anobidae) were obtained by window and light traps. The most common Anobiidae-species were Hadrobregmus confusus (Kraatz) 60.3%, Hadrobregmus pertinax (L.) 30.6% and Ernobius mollis (L.) 8.9%. The amounts of trapped insects varied in different houses and the flight time of anobiids varied greatly according to yearly weather conditions.

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