Red-listed and rare wood-living beetles at Stromsrum, Smaland.

摘要

Stromsrum in SE Sweden is one of the most important areas for threatened insects in northern Europe. This is a review of the red-listed and formerly red-listed species of wood-living beetles collected at Stromsrum with notes of their habitats. In an area of a few hundred hectares over 1000 old hollow oaks and almost as many hollow trees of other deciduous trees occur. From the current red list (Gardenfors 2005) 95 wood-living beetle species have been found in 1970-2005 and 22 species earlier. Furthermore, 49 species red-listed until recently have also been collected at Stromsrum. However, I expect that more threatened beetles will be found in the area in the future, since e.g. two "new" threatened beetles were found in 2005. Old, hollow living and dead oaks are the most important habitat features for the threatened insects, but other old living and dead deciduous trees are also very important.