Extinct beetle returns to Germany, offering hope against invasive caterpillars

A beetle thought to be extinct in Germany for over 60 years has been rediscovered in Saxony-Anhalt, sparking hope in the fight against the destructive oak processionary moth caterpillar. The Rosy Miller beetle (Calosoma sycophanta), a natural predator of the moth's larvae, was recently spotted by scientists at Anhalt University of Applied Sciences.

This reappearance is considered a "small sensation" by Peer Hajo Schnitter of the State Office for Environmental Protection in Saxony-Anhalt. "We hope it will settle here permanently and manage to rebuild stable populations again," he stated. The beetle, known for its iridescent shell, was found in the Drömling region and near Dessau-Rosslau, areas where it had not been seen since the 1960s.

Scientists believe the invasive caterpillars themselves may have contributed to the beetle's return, providing a plentiful food source. The oak processionary moth caterpillar is a significant concern across Europe, including Germany, France, and the Netherlands, and has recently appeared in Poland. Its stinging hairs can cause severe allergic reactions, skin irritation, and respiratory problems in humans and animals.

While the beetle's presence is a welcome development, researchers emphasize that it is not a silver bullet. "The beetle itself will not stop the invasion," noted scientists. Germany has been battling the caterpillars with costly aerial and ground bio-pesticide applications. Experts suggest that climate change and biodiversity loss due to intensive land use may be exacerbating the spread of the heat-loving caterpillars.

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This reappearance is a small sensation. We hope it will settle here permanently and manage to rebuild stable populations again.