Erster Nachweis der Raubfliege Tolmerus cowini Hobby, 1946 für Schleswig-Holstein (Diptera: Asilidae)

In 2022, the robber fly Tolmerus cowini has been detected on the island Trischen for the first time in Schleswig-Holstein. The Red List of robber flies of Germany lists this species as very rare. Further distribution is only known from few sites in the inland and from three east frisian islands. The new finding is discussed in terms of the species’s overall distribution as well as habitat preferences. Proposals for further search approaches are put forward.