〔報告〕日光の歴史的建造物で確認されたシバンムシ類の種類と生態について

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Extensive survey of beetles with sticky insect traps (about 27,000 traps) in about seventy historic buildings in Nikko World Heritage site was performed from the end of April to August 2010. Several species of Anobiid were found on the sticky traps: Priobium cylindricum, Trichodesma japonicum, Sculptotheca hilleri, Hadrobregmus pertinax, and Oligomerus japonicus. Some of them had caused severe infestation at certain buildings. There is little information about the anobiid species, but from the sporadic patterns of numbers of anobiids on sticky traps in many buildings over fairly vast areas, it is supposed that these anobiids may inhabit the natural places (forests) around the historic buildings. Nicobium hirtum is a well known anobiid which infests wooden objects and buildings in Japan. But surprisingly, we did not observe the species in the surveys in the Nikko area. Adult insects were most significantly caught on sticky traps from May to July. Since there is little information about these kinds of anobiids, this trapping survey provided important information about the characteristics of the insects and ideas for appropriate countermeasures to protect the buildings from the insects.

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