The males have a body length of 80 to 85 mm, the females (with laying spine) 83 to 79 mm. The wingspan is 83 to 9z mm.
The thorax and abdomen are black with yellow markings, their eyes are green. The forehead is yellow and has a thin black bar. The occipital triangle, which lies on the rear edge of the head between the eyes, is black. Segments S2 to S8 of the abdomen each have two rings two.
The male is waisted at abdominal segment S3 and broadens at S7 and S8.
The female is not waisted and has a spine that clearly protrudes over the abdomen.
It colonises different types of watercourses such as larger streams or rivers, but also narrow moorland ditches. Its hunting or foraging flights can also lead over larger meadows or water areas.
Literature:
- K.-D. Dijkstra, Libellen Europas, 2. Auflage, Haupt Verlag Bern 2021,ISBN 3-258-08219-6, S. 222 f
- K. Sternberg / R. Buchwald, Libellen Baden-Württembergs, Bd. 2, Ulmer Verlag Stuttgart 2000, ISBN 3-8001-3514-0, S. 191–208
- H. Wildermuth, A. Martens, Die Libellen Europas, Quelle & Meyer Wiebelsheim 2018, 3-494-01690-9, S. 511 ff
Websites:
- https://www.libellen.tv
- https://www.libellenschutz.ch
- https://www.libellenwissen.de
- https://www.waldschrat-online.de