The Gustav Stresemann Institute, together with the German Society for Limnology, Working Group Taxonomy, is organising the 61st DGL course “Einführung in die Bestimmung der Wasserkäfer unter besonderer Berücksichtigung der Fließwasserarten” in October 2023. Our colleague Silke Claßen will contribute as course coordinator. Further information on the course can be found at https://gsi-bevensen.de/