The Longhorn Beetle, Tragosoma depsarium, are categorized as “Near Threatened” (NT) by the International Union for Conservation of Nature as that may be considered threatened with extinction in the near future.
The big beetle has disappeared from large parts of our country, but it occurs on some premises in our landscape. It needs older sun-exposed wood for its egg laying, preferably coarse pine trunks. Today, the species is threatened due to lack of suitable habitats.
10 years ago, we got hold of several very rough pine logs from a local sawmill. They were almost 6 meters long and up to 80 cm in diameter. Too rough for the sawmill to handle. I ordered a timber car to place them in sunny places in the Stormyren nature reserve and still remember the driver and his very suspicious look … He was used to transport wood out of the forest not the other way around!
It took 10 years before we could see that it succeeded. This summer we found lots of holes after the beetle. Now the rough logs can serve as nurseries for generations of beetles for many decades to come. Nature conservation can take its time but when it succeeds it pays off with interest.